### GMSL gets set functions

In preparing for some changes to the GNU Make Debugger I decided that it would be helpful to have sets as a fundamental type and so I've added set manipulation functions to the GNU Make Standard Library; those functions will be released with the next version (1.0.3) of the library.

Adding the functions turned out to be pretty trivial with the right representation: a set in the GMSL is a deduplicated, sorted list and GNU Make's existing $(sort) function deduplicates and sorts a list. The library now has the empty set, functions for set union and intersection and tests to determine if one set is the subset of another or if an element is present in a set.

As with the rest of the GMSL there are tests to cover all the newly added functions and updated documentation is on the SourceForge site.

Adding the functions turned out to be pretty trivial with the right representation: a set in the GMSL is a deduplicated, sorted list and GNU Make's existing $(sort) function deduplicates and sorts a list. The library now has the empty set, functions for set union and intersection and tests to determine if one set is the subset of another or if an element is present in a set.

As with the rest of the GMSL there are tests to cover all the newly added functions and updated documentation is on the SourceForge site.

Labels: gnu make

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