id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc,lang,patch,platform
452,Don't use MULTI when not needed,allison,cotto,"Most (perhaps all) of the current core PMCs don't really use multiple dispatch. They declare MULTIs as an expensive way of performing a simple if/else on the type of the second argument. Convert these to actual if/else or switch/case statements within a single-dispatched VTABLE entry.

Some of the converted VTABLE entries should have a default case that extracts a value from the second argument and acts on it (such as, division within a Float PMC might simply ask for the 'get_number' value of the second argument). Other converted VTABLE entries should have a default case of multiple dispatch (if the second argument isn't one of the specific anticipated types). Some converted VTABLE entries might use value extraction as a first default for core PMC types (which are relatively predictable) and multiple dispatch as the default-default to handle non-core types.

The VTABLE entries in default.pmc should still perform multiple dispatch, to allow MMD overrides from non-core types.",deprecation,closed,normal,,core,,medium,invalid,,,,,