Index: src/libcfa/Makefile.am
===================================================================
--- src/libcfa/Makefile.am	(revision 58ed882b4b6ede52c998485eaf7a490d63b88524)
+++ src/libcfa/Makefile.am	(revision 64fc0bafc25144f94bd5bbd4794fdbef138cdd9f)
@@ -41,5 +41,6 @@
 CC = ${abs_top_srcdir}/src/driver/cfa
 
-headers = limits stdlib math iostream fstream iterator rational assert containers/pair containers/vector
+headers = assert fstream iostream iterator limits math rational stdlib \
+	  containers/maybe containers/pair containers/result containers/vector
 
 # not all platforms support concurrency, add option do disable it
Index: src/libcfa/Makefile.in
===================================================================
--- src/libcfa/Makefile.in	(revision 58ed882b4b6ede52c998485eaf7a490d63b88524)
+++ src/libcfa/Makefile.in	(revision 64fc0bafc25144f94bd5bbd4794fdbef138cdd9f)
@@ -98,10 +98,10 @@
 libcfa_d_a_LIBADD =
 am__libcfa_d_a_SOURCES_DIST = libcfa-prelude.c interpose.c \
-	libhdr/libdebug.c limits.c stdlib.c math.c iostream.c \
-	fstream.c iterator.c rational.c assert.c containers/pair.c \
-	containers/vector.c concurrency/coroutine.c \
-	concurrency/thread.c concurrency/kernel.c \
-	concurrency/monitor.c concurrency/CtxSwitch-@MACHINE_TYPE@.S \
-	concurrency/invoke.c
+	libhdr/libdebug.c assert.c fstream.c iostream.c iterator.c \
+	limits.c math.c rational.c stdlib.c containers/maybe.c \
+	containers/pair.c containers/result.c containers/vector.c \
+	concurrency/coroutine.c concurrency/thread.c \
+	concurrency/kernel.c concurrency/monitor.c \
+	concurrency/CtxSwitch-@MACHINE_TYPE@.S concurrency/invoke.c
 am__dirstamp = $(am__leading_dot)dirstamp
 @BUILD_CONCURRENCY_TRUE@am__objects_1 = concurrency/libcfa_d_a-coroutine.$(OBJEXT) \
@@ -109,10 +109,12 @@
 @BUILD_CONCURRENCY_TRUE@	concurrency/libcfa_d_a-kernel.$(OBJEXT) \
 @BUILD_CONCURRENCY_TRUE@	concurrency/libcfa_d_a-monitor.$(OBJEXT)
-am__objects_2 = libcfa_d_a-limits.$(OBJEXT) \
-	libcfa_d_a-stdlib.$(OBJEXT) libcfa_d_a-math.$(OBJEXT) \
-	libcfa_d_a-iostream.$(OBJEXT) libcfa_d_a-fstream.$(OBJEXT) \
-	libcfa_d_a-iterator.$(OBJEXT) libcfa_d_a-rational.$(OBJEXT) \
-	libcfa_d_a-assert.$(OBJEXT) \
+am__objects_2 = libcfa_d_a-assert.$(OBJEXT) \
+	libcfa_d_a-fstream.$(OBJEXT) libcfa_d_a-iostream.$(OBJEXT) \
+	libcfa_d_a-iterator.$(OBJEXT) libcfa_d_a-limits.$(OBJEXT) \
+	libcfa_d_a-math.$(OBJEXT) libcfa_d_a-rational.$(OBJEXT) \
+	libcfa_d_a-stdlib.$(OBJEXT) \
+	containers/libcfa_d_a-maybe.$(OBJEXT) \
 	containers/libcfa_d_a-pair.$(OBJEXT) \
+	containers/libcfa_d_a-result.$(OBJEXT) \
 	containers/libcfa_d_a-vector.$(OBJEXT) $(am__objects_1)
 @BUILD_CONCURRENCY_TRUE@am__objects_3 = concurrency/CtxSwitch-@MACHINE_TYPE@.$(OBJEXT) \
@@ -127,19 +129,21 @@
 libcfa_a_LIBADD =
 am__libcfa_a_SOURCES_DIST = libcfa-prelude.c interpose.c \
-	libhdr/libdebug.c limits.c stdlib.c math.c iostream.c \
-	fstream.c iterator.c rational.c assert.c containers/pair.c \
-	containers/vector.c concurrency/coroutine.c \
-	concurrency/thread.c concurrency/kernel.c \
-	concurrency/monitor.c concurrency/CtxSwitch-@MACHINE_TYPE@.S \
-	concurrency/invoke.c
+	libhdr/libdebug.c assert.c fstream.c iostream.c iterator.c \
+	limits.c math.c rational.c stdlib.c containers/maybe.c \
+	containers/pair.c containers/result.c containers/vector.c \
+	concurrency/coroutine.c concurrency/thread.c \
+	concurrency/kernel.c concurrency/monitor.c \
+	concurrency/CtxSwitch-@MACHINE_TYPE@.S concurrency/invoke.c
 @BUILD_CONCURRENCY_TRUE@am__objects_5 = concurrency/libcfa_a-coroutine.$(OBJEXT) \
 @BUILD_CONCURRENCY_TRUE@	concurrency/libcfa_a-thread.$(OBJEXT) \
 @BUILD_CONCURRENCY_TRUE@	concurrency/libcfa_a-kernel.$(OBJEXT) \
 @BUILD_CONCURRENCY_TRUE@	concurrency/libcfa_a-monitor.$(OBJEXT)
-am__objects_6 = libcfa_a-limits.$(OBJEXT) libcfa_a-stdlib.$(OBJEXT) \
-	libcfa_a-math.$(OBJEXT) libcfa_a-iostream.$(OBJEXT) \
-	libcfa_a-fstream.$(OBJEXT) libcfa_a-iterator.$(OBJEXT) \
-	libcfa_a-rational.$(OBJEXT) libcfa_a-assert.$(OBJEXT) \
+am__objects_6 = libcfa_a-assert.$(OBJEXT) libcfa_a-fstream.$(OBJEXT) \
+	libcfa_a-iostream.$(OBJEXT) libcfa_a-iterator.$(OBJEXT) \
+	libcfa_a-limits.$(OBJEXT) libcfa_a-math.$(OBJEXT) \
+	libcfa_a-rational.$(OBJEXT) libcfa_a-stdlib.$(OBJEXT) \
+	containers/libcfa_a-maybe.$(OBJEXT) \
 	containers/libcfa_a-pair.$(OBJEXT) \
+	containers/libcfa_a-result.$(OBJEXT) \
 	containers/libcfa_a-vector.$(OBJEXT) $(am__objects_5)
 @BUILD_CONCURRENCY_TRUE@am__objects_7 = concurrency/CtxSwitch-@MACHINE_TYPE@.$(OBJEXT) \
@@ -179,9 +183,9 @@
 DIST_SOURCES = $(am__libcfa_d_a_SOURCES_DIST) \
 	$(am__libcfa_a_SOURCES_DIST)
-am__nobase_cfa_include_HEADERS_DIST = limits stdlib math iostream \
-	fstream iterator rational assert containers/pair \
-	containers/vector concurrency/coroutine concurrency/thread \
-	concurrency/kernel concurrency/monitor ${shell echo stdhdr/*} \
-	gmp concurrency/invoke.h
+am__nobase_cfa_include_HEADERS_DIST = assert fstream iostream iterator \
+	limits math rational stdlib containers/maybe containers/pair \
+	containers/result containers/vector concurrency/coroutine \
+	concurrency/thread concurrency/kernel concurrency/monitor \
+	${shell echo stdhdr/*} gmp concurrency/invoke.h
 HEADERS = $(nobase_cfa_include_HEADERS)
 ETAGS = etags
@@ -313,6 +317,7 @@
 EXTRA_FLAGS = -g -Wall -Werror -Wno-unused-function -I${abs_top_srcdir}/src/libcfa/libhdr -imacros libcfa-prelude.c @CFA_FLAGS@
 AM_CCASFLAGS = @CFA_FLAGS@
-headers = limits stdlib math iostream fstream iterator rational assert \
-	containers/pair containers/vector $(am__append_3)
+headers = assert fstream iostream iterator limits math rational stdlib \
+	containers/maybe containers/pair containers/result \
+	containers/vector $(am__append_3)
 libobjs = ${headers:=.o}
 libsrc = libcfa-prelude.c interpose.c libhdr/libdebug.c ${headers:=.c} \
@@ -404,5 +409,9 @@
 	@$(MKDIR_P) containers/$(DEPDIR)
 	@: > containers/$(DEPDIR)/$(am__dirstamp)
+containers/libcfa_d_a-maybe.$(OBJEXT): containers/$(am__dirstamp) \
+	containers/$(DEPDIR)/$(am__dirstamp)
 containers/libcfa_d_a-pair.$(OBJEXT): containers/$(am__dirstamp) \
+	containers/$(DEPDIR)/$(am__dirstamp)
+containers/libcfa_d_a-result.$(OBJEXT): containers/$(am__dirstamp) \
 	containers/$(DEPDIR)/$(am__dirstamp)
 containers/libcfa_d_a-vector.$(OBJEXT): containers/$(am__dirstamp) \
@@ -434,5 +443,9 @@
 libhdr/libcfa_a-libdebug.$(OBJEXT): libhdr/$(am__dirstamp) \
 	libhdr/$(DEPDIR)/$(am__dirstamp)
+containers/libcfa_a-maybe.$(OBJEXT): containers/$(am__dirstamp) \
+	containers/$(DEPDIR)/$(am__dirstamp)
 containers/libcfa_a-pair.$(OBJEXT): containers/$(am__dirstamp) \
+	containers/$(DEPDIR)/$(am__dirstamp)
+containers/libcfa_a-result.$(OBJEXT): containers/$(am__dirstamp) \
 	containers/$(DEPDIR)/$(am__dirstamp)
 containers/libcfa_a-vector.$(OBJEXT): containers/$(am__dirstamp) \
@@ -466,7 +479,11 @@
 	-rm -f concurrency/libcfa_d_a-monitor.$(OBJEXT)
 	-rm -f concurrency/libcfa_d_a-thread.$(OBJEXT)
+	-rm -f containers/libcfa_a-maybe.$(OBJEXT)
 	-rm -f containers/libcfa_a-pair.$(OBJEXT)
+	-rm -f containers/libcfa_a-result.$(OBJEXT)
 	-rm -f containers/libcfa_a-vector.$(OBJEXT)
+	-rm -f containers/libcfa_d_a-maybe.$(OBJEXT)
 	-rm -f containers/libcfa_d_a-pair.$(OBJEXT)
+	-rm -f containers/libcfa_d_a-result.$(OBJEXT)
 	-rm -f containers/libcfa_d_a-vector.$(OBJEXT)
 	-rm -f libhdr/libcfa_a-libdebug.$(OBJEXT)
@@ -507,7 +524,11 @@
 @AMDEP_TRUE@@am__include@ @am__quote@concurrency/$(DEPDIR)/libcfa_d_a-monitor.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@concurrency/$(DEPDIR)/libcfa_d_a-thread.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@containers/$(DEPDIR)/libcfa_a-maybe.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@containers/$(DEPDIR)/libcfa_a-pair.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@containers/$(DEPDIR)/libcfa_a-result.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@containers/$(DEPDIR)/libcfa_a-vector.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@containers/$(DEPDIR)/libcfa_d_a-maybe.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@containers/$(DEPDIR)/libcfa_d_a-pair.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@containers/$(DEPDIR)/libcfa_d_a-result.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@containers/$(DEPDIR)/libcfa_d_a-vector.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@libhdr/$(DEPDIR)/libcfa_a-libdebug.Po@am__quote@
@@ -581,4 +602,60 @@
 @am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_d_a_CFLAGS) $(CFLAGS) -c -o libhdr/libcfa_d_a-libdebug.obj `if test -f 'libhdr/libdebug.c'; then $(CYGPATH_W) 'libhdr/libdebug.c'; else $(CYGPATH_W) '$(srcdir)/libhdr/libdebug.c'; fi`
 
+libcfa_d_a-assert.o: assert.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_d_a_CFLAGS) $(CFLAGS) -MT libcfa_d_a-assert.o -MD -MP -MF $(DEPDIR)/libcfa_d_a-assert.Tpo -c -o libcfa_d_a-assert.o `test -f 'assert.c' || echo '$(srcdir)/'`assert.c
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libcfa_d_a-assert.Tpo $(DEPDIR)/libcfa_d_a-assert.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='assert.c' object='libcfa_d_a-assert.o' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_d_a_CFLAGS) $(CFLAGS) -c -o libcfa_d_a-assert.o `test -f 'assert.c' || echo '$(srcdir)/'`assert.c
+
+libcfa_d_a-assert.obj: assert.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_d_a_CFLAGS) $(CFLAGS) -MT libcfa_d_a-assert.obj -MD -MP -MF $(DEPDIR)/libcfa_d_a-assert.Tpo -c -o libcfa_d_a-assert.obj `if test -f 'assert.c'; then $(CYGPATH_W) 'assert.c'; else $(CYGPATH_W) '$(srcdir)/assert.c'; fi`
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libcfa_d_a-assert.Tpo $(DEPDIR)/libcfa_d_a-assert.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='assert.c' object='libcfa_d_a-assert.obj' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_d_a_CFLAGS) $(CFLAGS) -c -o libcfa_d_a-assert.obj `if test -f 'assert.c'; then $(CYGPATH_W) 'assert.c'; else $(CYGPATH_W) '$(srcdir)/assert.c'; fi`
+
+libcfa_d_a-fstream.o: fstream.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_d_a_CFLAGS) $(CFLAGS) -MT libcfa_d_a-fstream.o -MD -MP -MF $(DEPDIR)/libcfa_d_a-fstream.Tpo -c -o libcfa_d_a-fstream.o `test -f 'fstream.c' || echo '$(srcdir)/'`fstream.c
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libcfa_d_a-fstream.Tpo $(DEPDIR)/libcfa_d_a-fstream.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='fstream.c' object='libcfa_d_a-fstream.o' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_d_a_CFLAGS) $(CFLAGS) -c -o libcfa_d_a-fstream.o `test -f 'fstream.c' || echo '$(srcdir)/'`fstream.c
+
+libcfa_d_a-fstream.obj: fstream.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_d_a_CFLAGS) $(CFLAGS) -MT libcfa_d_a-fstream.obj -MD -MP -MF $(DEPDIR)/libcfa_d_a-fstream.Tpo -c -o libcfa_d_a-fstream.obj `if test -f 'fstream.c'; then $(CYGPATH_W) 'fstream.c'; else $(CYGPATH_W) '$(srcdir)/fstream.c'; fi`
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libcfa_d_a-fstream.Tpo $(DEPDIR)/libcfa_d_a-fstream.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='fstream.c' object='libcfa_d_a-fstream.obj' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_d_a_CFLAGS) $(CFLAGS) -c -o libcfa_d_a-fstream.obj `if test -f 'fstream.c'; then $(CYGPATH_W) 'fstream.c'; else $(CYGPATH_W) '$(srcdir)/fstream.c'; fi`
+
+libcfa_d_a-iostream.o: iostream.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_d_a_CFLAGS) $(CFLAGS) -MT libcfa_d_a-iostream.o -MD -MP -MF $(DEPDIR)/libcfa_d_a-iostream.Tpo -c -o libcfa_d_a-iostream.o `test -f 'iostream.c' || echo '$(srcdir)/'`iostream.c
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libcfa_d_a-iostream.Tpo $(DEPDIR)/libcfa_d_a-iostream.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='iostream.c' object='libcfa_d_a-iostream.o' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_d_a_CFLAGS) $(CFLAGS) -c -o libcfa_d_a-iostream.o `test -f 'iostream.c' || echo '$(srcdir)/'`iostream.c
+
+libcfa_d_a-iostream.obj: iostream.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_d_a_CFLAGS) $(CFLAGS) -MT libcfa_d_a-iostream.obj -MD -MP -MF $(DEPDIR)/libcfa_d_a-iostream.Tpo -c -o libcfa_d_a-iostream.obj `if test -f 'iostream.c'; then $(CYGPATH_W) 'iostream.c'; else $(CYGPATH_W) '$(srcdir)/iostream.c'; fi`
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libcfa_d_a-iostream.Tpo $(DEPDIR)/libcfa_d_a-iostream.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='iostream.c' object='libcfa_d_a-iostream.obj' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_d_a_CFLAGS) $(CFLAGS) -c -o libcfa_d_a-iostream.obj `if test -f 'iostream.c'; then $(CYGPATH_W) 'iostream.c'; else $(CYGPATH_W) '$(srcdir)/iostream.c'; fi`
+
+libcfa_d_a-iterator.o: iterator.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_d_a_CFLAGS) $(CFLAGS) -MT libcfa_d_a-iterator.o -MD -MP -MF $(DEPDIR)/libcfa_d_a-iterator.Tpo -c -o libcfa_d_a-iterator.o `test -f 'iterator.c' || echo '$(srcdir)/'`iterator.c
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libcfa_d_a-iterator.Tpo $(DEPDIR)/libcfa_d_a-iterator.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='iterator.c' object='libcfa_d_a-iterator.o' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_d_a_CFLAGS) $(CFLAGS) -c -o libcfa_d_a-iterator.o `test -f 'iterator.c' || echo '$(srcdir)/'`iterator.c
+
+libcfa_d_a-iterator.obj: iterator.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_d_a_CFLAGS) $(CFLAGS) -MT libcfa_d_a-iterator.obj -MD -MP -MF $(DEPDIR)/libcfa_d_a-iterator.Tpo -c -o libcfa_d_a-iterator.obj `if test -f 'iterator.c'; then $(CYGPATH_W) 'iterator.c'; else $(CYGPATH_W) '$(srcdir)/iterator.c'; fi`
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libcfa_d_a-iterator.Tpo $(DEPDIR)/libcfa_d_a-iterator.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='iterator.c' object='libcfa_d_a-iterator.obj' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_d_a_CFLAGS) $(CFLAGS) -c -o libcfa_d_a-iterator.obj `if test -f 'iterator.c'; then $(CYGPATH_W) 'iterator.c'; else $(CYGPATH_W) '$(srcdir)/iterator.c'; fi`
+
 libcfa_d_a-limits.o: limits.c
 @am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_d_a_CFLAGS) $(CFLAGS) -MT libcfa_d_a-limits.o -MD -MP -MF $(DEPDIR)/libcfa_d_a-limits.Tpo -c -o libcfa_d_a-limits.o `test -f 'limits.c' || echo '$(srcdir)/'`limits.c
@@ -595,4 +672,32 @@
 @am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_d_a_CFLAGS) $(CFLAGS) -c -o libcfa_d_a-limits.obj `if test -f 'limits.c'; then $(CYGPATH_W) 'limits.c'; else $(CYGPATH_W) '$(srcdir)/limits.c'; fi`
 
+libcfa_d_a-math.o: math.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_d_a_CFLAGS) $(CFLAGS) -MT libcfa_d_a-math.o -MD -MP -MF $(DEPDIR)/libcfa_d_a-math.Tpo -c -o libcfa_d_a-math.o `test -f 'math.c' || echo '$(srcdir)/'`math.c
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libcfa_d_a-math.Tpo $(DEPDIR)/libcfa_d_a-math.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='math.c' object='libcfa_d_a-math.o' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_d_a_CFLAGS) $(CFLAGS) -c -o libcfa_d_a-math.o `test -f 'math.c' || echo '$(srcdir)/'`math.c
+
+libcfa_d_a-math.obj: math.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_d_a_CFLAGS) $(CFLAGS) -MT libcfa_d_a-math.obj -MD -MP -MF $(DEPDIR)/libcfa_d_a-math.Tpo -c -o libcfa_d_a-math.obj `if test -f 'math.c'; then $(CYGPATH_W) 'math.c'; else $(CYGPATH_W) '$(srcdir)/math.c'; fi`
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libcfa_d_a-math.Tpo $(DEPDIR)/libcfa_d_a-math.Po
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-
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-@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -MT libcfa_a-iostream.obj -MD -MP -MF $(DEPDIR)/libcfa_a-iostream.Tpo -c -o libcfa_a-iostream.obj `if test -f 'iostream.c'; then $(CYGPATH_W) 'iostream.c'; else $(CYGPATH_W) '$(srcdir)/iostream.c'; fi`
-@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libcfa_a-iostream.Tpo $(DEPDIR)/libcfa_a-iostream.Po
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='iostream.c' object='libcfa_a-iostream.obj' libtool=no @AMDEPBACKSLASH@
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -c -o libcfa_a-iostream.obj `if test -f 'iostream.c'; then $(CYGPATH_W) 'iostream.c'; else $(CYGPATH_W) '$(srcdir)/iostream.c'; fi`
-
-libcfa_a-fstream.o: fstream.c
-@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -MT libcfa_a-fstream.o -MD -MP -MF $(DEPDIR)/libcfa_a-fstream.Tpo -c -o libcfa_a-fstream.o `test -f 'fstream.c' || echo '$(srcdir)/'`fstream.c
-@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libcfa_a-fstream.Tpo $(DEPDIR)/libcfa_a-fstream.Po
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='fstream.c' object='libcfa_a-fstream.o' libtool=no @AMDEPBACKSLASH@
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -c -o libcfa_a-fstream.o `test -f 'fstream.c' || echo '$(srcdir)/'`fstream.c
-
-libcfa_a-fstream.obj: fstream.c
-@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -MT libcfa_a-fstream.obj -MD -MP -MF $(DEPDIR)/libcfa_a-fstream.Tpo -c -o libcfa_a-fstream.obj `if test -f 'fstream.c'; then $(CYGPATH_W) 'fstream.c'; else $(CYGPATH_W) '$(srcdir)/fstream.c'; fi`
-@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libcfa_a-fstream.Tpo $(DEPDIR)/libcfa_a-fstream.Po
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='fstream.c' object='libcfa_a-fstream.obj' libtool=no @AMDEPBACKSLASH@
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -c -o libcfa_a-fstream.obj `if test -f 'fstream.c'; then $(CYGPATH_W) 'fstream.c'; else $(CYGPATH_W) '$(srcdir)/fstream.c'; fi`
-
-libcfa_a-iterator.o: iterator.c
-@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -MT libcfa_a-iterator.o -MD -MP -MF $(DEPDIR)/libcfa_a-iterator.Tpo -c -o libcfa_a-iterator.o `test -f 'iterator.c' || echo '$(srcdir)/'`iterator.c
-@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libcfa_a-iterator.Tpo $(DEPDIR)/libcfa_a-iterator.Po
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='iterator.c' object='libcfa_a-iterator.o' libtool=no @AMDEPBACKSLASH@
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -c -o libcfa_a-iterator.o `test -f 'iterator.c' || echo '$(srcdir)/'`iterator.c
-
-libcfa_a-iterator.obj: iterator.c
-@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -MT libcfa_a-iterator.obj -MD -MP -MF $(DEPDIR)/libcfa_a-iterator.Tpo -c -o libcfa_a-iterator.obj `if test -f 'iterator.c'; then $(CYGPATH_W) 'iterator.c'; else $(CYGPATH_W) '$(srcdir)/iterator.c'; fi`
-@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libcfa_a-iterator.Tpo $(DEPDIR)/libcfa_a-iterator.Po
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='iterator.c' object='libcfa_a-iterator.obj' libtool=no @AMDEPBACKSLASH@
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -c -o libcfa_a-iterator.obj `if test -f 'iterator.c'; then $(CYGPATH_W) 'iterator.c'; else $(CYGPATH_W) '$(srcdir)/iterator.c'; fi`
-
-libcfa_a-rational.o: rational.c
-@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -MT libcfa_a-rational.o -MD -MP -MF $(DEPDIR)/libcfa_a-rational.Tpo -c -o libcfa_a-rational.o `test -f 'rational.c' || echo '$(srcdir)/'`rational.c
-@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libcfa_a-rational.Tpo $(DEPDIR)/libcfa_a-rational.Po
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='rational.c' object='libcfa_a-rational.o' libtool=no @AMDEPBACKSLASH@
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -c -o libcfa_a-rational.o `test -f 'rational.c' || echo '$(srcdir)/'`rational.c
-
-libcfa_a-rational.obj: rational.c
-@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -MT libcfa_a-rational.obj -MD -MP -MF $(DEPDIR)/libcfa_a-rational.Tpo -c -o libcfa_a-rational.obj `if test -f 'rational.c'; then $(CYGPATH_W) 'rational.c'; else $(CYGPATH_W) '$(srcdir)/rational.c'; fi`
-@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libcfa_a-rational.Tpo $(DEPDIR)/libcfa_a-rational.Po
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='rational.c' object='libcfa_a-rational.obj' libtool=no @AMDEPBACKSLASH@
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -c -o libcfa_a-rational.obj `if test -f 'rational.c'; then $(CYGPATH_W) 'rational.c'; else $(CYGPATH_W) '$(srcdir)/rational.c'; fi`
-
-libcfa_a-assert.o: assert.c
-@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -MT libcfa_a-assert.o -MD -MP -MF $(DEPDIR)/libcfa_a-assert.Tpo -c -o libcfa_a-assert.o `test -f 'assert.c' || echo '$(srcdir)/'`assert.c
-@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libcfa_a-assert.Tpo $(DEPDIR)/libcfa_a-assert.Po
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='assert.c' object='libcfa_a-assert.o' libtool=no @AMDEPBACKSLASH@
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -c -o libcfa_a-assert.o `test -f 'assert.c' || echo '$(srcdir)/'`assert.c
-
-libcfa_a-assert.obj: assert.c
-@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -MT libcfa_a-assert.obj -MD -MP -MF $(DEPDIR)/libcfa_a-assert.Tpo -c -o libcfa_a-assert.obj `if test -f 'assert.c'; then $(CYGPATH_W) 'assert.c'; else $(CYGPATH_W) '$(srcdir)/assert.c'; fi`
-@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libcfa_a-assert.Tpo $(DEPDIR)/libcfa_a-assert.Po
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='assert.c' object='libcfa_a-assert.obj' libtool=no @AMDEPBACKSLASH@
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -c -o libcfa_a-assert.obj `if test -f 'assert.c'; then $(CYGPATH_W) 'assert.c'; else $(CYGPATH_W) '$(srcdir)/assert.c'; fi`
+containers/libcfa_a-maybe.o: containers/maybe.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -MT containers/libcfa_a-maybe.o -MD -MP -MF containers/$(DEPDIR)/libcfa_a-maybe.Tpo -c -o containers/libcfa_a-maybe.o `test -f 'containers/maybe.c' || echo '$(srcdir)/'`containers/maybe.c
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) containers/$(DEPDIR)/libcfa_a-maybe.Tpo containers/$(DEPDIR)/libcfa_a-maybe.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='containers/maybe.c' object='containers/libcfa_a-maybe.o' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -c -o containers/libcfa_a-maybe.o `test -f 'containers/maybe.c' || echo '$(srcdir)/'`containers/maybe.c
+
+containers/libcfa_a-maybe.obj: containers/maybe.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -MT containers/libcfa_a-maybe.obj -MD -MP -MF containers/$(DEPDIR)/libcfa_a-maybe.Tpo -c -o containers/libcfa_a-maybe.obj `if test -f 'containers/maybe.c'; then $(CYGPATH_W) 'containers/maybe.c'; else $(CYGPATH_W) '$(srcdir)/containers/maybe.c'; fi`
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) containers/$(DEPDIR)/libcfa_a-maybe.Tpo containers/$(DEPDIR)/libcfa_a-maybe.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='containers/maybe.c' object='containers/libcfa_a-maybe.obj' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -c -o containers/libcfa_a-maybe.obj `if test -f 'containers/maybe.c'; then $(CYGPATH_W) 'containers/maybe.c'; else $(CYGPATH_W) '$(srcdir)/containers/maybe.c'; fi`
 
 containers/libcfa_a-pair.o: containers/pair.c
@@ -944,4 +1007,18 @@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
 @am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -c -o containers/libcfa_a-pair.obj `if test -f 'containers/pair.c'; then $(CYGPATH_W) 'containers/pair.c'; else $(CYGPATH_W) '$(srcdir)/containers/pair.c'; fi`
+
+containers/libcfa_a-result.o: containers/result.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -MT containers/libcfa_a-result.o -MD -MP -MF containers/$(DEPDIR)/libcfa_a-result.Tpo -c -o containers/libcfa_a-result.o `test -f 'containers/result.c' || echo '$(srcdir)/'`containers/result.c
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) containers/$(DEPDIR)/libcfa_a-result.Tpo containers/$(DEPDIR)/libcfa_a-result.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='containers/result.c' object='containers/libcfa_a-result.o' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -c -o containers/libcfa_a-result.o `test -f 'containers/result.c' || echo '$(srcdir)/'`containers/result.c
+
+containers/libcfa_a-result.obj: containers/result.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -MT containers/libcfa_a-result.obj -MD -MP -MF containers/$(DEPDIR)/libcfa_a-result.Tpo -c -o containers/libcfa_a-result.obj `if test -f 'containers/result.c'; then $(CYGPATH_W) 'containers/result.c'; else $(CYGPATH_W) '$(srcdir)/containers/result.c'; fi`
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) containers/$(DEPDIR)/libcfa_a-result.Tpo containers/$(DEPDIR)/libcfa_a-result.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='containers/result.c' object='containers/libcfa_a-result.obj' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libcfa_a_CFLAGS) $(CFLAGS) -c -o containers/libcfa_a-result.obj `if test -f 'containers/result.c'; then $(CYGPATH_W) 'containers/result.c'; else $(CYGPATH_W) '$(srcdir)/containers/result.c'; fi`
 
 containers/libcfa_a-vector.o: containers/vector.c
Index: src/libcfa/containers/maybe
===================================================================
--- src/libcfa/containers/maybe	(revision 58ed882b4b6ede52c998485eaf7a490d63b88524)
+++ src/libcfa/containers/maybe	(revision 64fc0bafc25144f94bd5bbd4794fdbef138cdd9f)
@@ -18,9 +18,10 @@
 #define MAYBE_H
 
+#include <stdbool.h>
 
 // DO NOT USE DIRECTLY!
 forall(otype T)
 struct maybe {
-    _Bool has_value;
+    bool has_value;
     T value;
 };
@@ -40,5 +41,5 @@
 
 forall(otype T)
-_Bool ?!=?(result(T, E) this, zero_t);
+bool ?!=?(maybe(T) this, zero_t);
 
 forall(otype T)
@@ -49,5 +50,5 @@
 
 forall(otype T)
-_Bool has_value(maybe(T) * this);
+bool has_value(maybe(T) * this);
 
 forall(otype T)
Index: src/libcfa/containers/maybe.c
===================================================================
--- src/libcfa/containers/maybe.c	(revision 58ed882b4b6ede52c998485eaf7a490d63b88524)
+++ src/libcfa/containers/maybe.c	(revision 64fc0bafc25144f94bd5bbd4794fdbef138cdd9f)
@@ -40,25 +40,25 @@
 void ^?{}(maybe(T) * this) {
 	if (this->has_value) {
-		^(this->value){};
+		^(&this->value){};
 	}
 }
 
 forall(otype T)
-_Bool ?!=?(result(T, E) this, zero_t) {
-	return !this->has_value;
+bool ?!=?(maybe(T) this, zero_t) {
+	return !this.has_value;
 }
 
 forall(otype T)
 maybe(T) maybe_value(T value) {
-	return (Maybe(T)){value};
+	return (maybe(T)){value};
 }
 
 forall(otype T)
 maybe(T) maybe_none() {
-	return (Maybe(T)){};
+	return (maybe(T)){};
 }
 
 forall(otype T)
-_Bool has_value(maybe(T) * this) {
+bool has_value(maybe(T) * this) {
 	return this->has_value;
 }
Index: src/libcfa/containers/result
===================================================================
--- src/libcfa/containers/result	(revision 58ed882b4b6ede52c998485eaf7a490d63b88524)
+++ src/libcfa/containers/result	(revision 64fc0bafc25144f94bd5bbd4794fdbef138cdd9f)
@@ -18,13 +18,17 @@
 #define RESULT_H
 
+#include <stdbool.h>
 
 // DO NOT USE DIRECTLY!
 forall(otype T, otype E)
+union inner_result{
+	T value;
+	E error;
+};
+
+forall(otype T, otype E)
 struct result {
-	_Bool has_value;
-	union {
-		T value;
-		E error;
-	};
+	bool has_value;
+	inner_result(T, E);
 };
 
@@ -46,5 +50,5 @@
 
 forall(otype T, otype E)
-_Bool ?!=?(result(T, E) this, zero_t);
+bool ?!=?(result(T, E) this, zero_t);
 
 forall(otype T, otype E)
@@ -55,5 +59,5 @@
 
 forall(otype T, otype E)
-_Bool has_value(result(T, E) * this);
+bool has_value(result(T, E) * this);
 
 forall(otype T, otype E)
Index: src/libcfa/containers/result.c
===================================================================
--- src/libcfa/containers/result.c	(revision 58ed882b4b6ede52c998485eaf7a490d63b88524)
+++ src/libcfa/containers/result.c	(revision 64fc0bafc25144f94bd5bbd4794fdbef138cdd9f)
@@ -21,5 +21,5 @@
 void ?{}(result(T, E) * this) {
 	this->has_value = false;
-	(this->error){};
+	(&this->error){};
 }
 
@@ -49,27 +49,27 @@
 void ^?{}(result(T, E) * this) {
 	if (this->has_value) {
-		^(this->value){};
+		^(&this->value){};
 	} else {
-		^(this->error){};
+		^(&this->error){};
 	}
 }
 
 forall(otype T, otype E)
-_Bool ?!=?(result(T, E) this, zero_t) {
-	return !this->has_value;
+bool ?!=?(result(T, E) this, zero_t) {
+	return !this.has_value;
 }
 
 forall(otype T, otype E)
 result(T, E) result_value(T value) {
-	return (Result(T, E)){1, value};
+	return (result(T, E)){1, value};
 }
 
 forall(otype T, otype E)
 result(T, E) result_error(E error) {
-	return (Result(T, E)){0, value};
+	return (result(T, E)){0, error};
 }
 
 forall(otype T, otype E)
-_Bool has_value(result(T, E) * this) {
+bool has_value(result(T, E) * this) {
 	return this->has_value;
 }
@@ -77,5 +77,5 @@
 forall(otype T, otype E)
 T get(result(T, E) * this) {
-    assertf(this->has_value, "attempt to get from result without value");
+	assertf(this->has_value, "attempt to get from result without value");
 	return this->value;
 }
@@ -83,5 +83,5 @@
 forall(otype T, otype E)
 E get_error(result(T, E) * this) {
-    assertf(this->has_value, "attempt to get from result without error");
+	assertf(this->has_value, "attempt to get from result without error");
 	return this->error;
 }