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2eee071261
Estimated hours taken: 3 Added a new sample program, e.m, and fixed some out-of-date documentation. samples/Mmakefile: samples/e.m: Sample program 'e' which calculates the base of natural logarithms to lots of digits (if you're prepared to wait). samples/README: Added documentation for e.m, updated documentation for samples/diff/* to reflect recent changes.
79 lines
2.7 KiB
Plaintext
79 lines
2.7 KiB
Plaintext
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This directory contains some example Mercury programs.
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hello.m "Hello World" in Mercury.
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cat.m An implementation of a simple version of the
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standard UNIX filter `cat', which just copies
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its input files or the standard input stream to
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the standard output stream.
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sort.m An implementation of a simple version of the
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standard UNIX filter `sort', which reads lines
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from its input files or the standard input
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stream, sorts them, and then writes the result
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to the standard output stream.
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calculator.m A simple four-function arithmetic calculator,
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with a parser written using the Definite Clause
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Grammar notation.
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committed_choice.m An example illustrating committed-choice
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nondeterminism in Mercury.
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interpreter.m An simple interpreter for definite logic programs.
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A demonstration of meta-programming in Mercury.
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expand_terms.m Another example meta-program, showing how to
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emulate Prolog's `expand_term' mechanism.
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e.m A small program which calculates the base of
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natural logarithms to however many digits you
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choose. It illustrates one way to achieve
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lazy evaluation in Mercury.
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Mmake The file used by `mmake', the Mercury Make program,
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to build the programs in this directory.
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There are also some sub-directories which contain examples of multi-module
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Mercury programs.
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diff This directory contains an implementation of a
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simple version of the standard UNIX utility
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`diff', which prints the differences between
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two files.
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diff/file.m A module which defines a `file' abstract data type
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to hold the lines of text in a file.
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diff/lcsstype.m A module which defines the `lcss' type; used to
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represent the longest common subsequence between
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two files.
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diff/lcss.m A module which defines a `diff' data type; it
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exports a routine for computing the difference
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between two `file's, represented as a `diff',
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using the "longest common subsequence" algorithm.
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diff/diffs.m Routines for printing `diff's in a couple of
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different formats.
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diff/diff.m The top-level driver for the `diff' program;
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it contains some "glue" code which handles
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the processing of command-line arguments
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and calls the routines in file.m and lcss.m.
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diff/Mmake An example of a very short Mmake file.
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c_interface This directory contains some examples of mixed
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Mercury/C programs using the C interface.
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c_interface/c_calls_mercury This directory contains a detailed
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example of C code calling Mercury code.
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c_interface/mercury_calls_c This directory contains a detailed
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example of Mercury code calling C code.
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c_interface/short_example.m A short example of Mercury code calling C.
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