Many of funcy functions expecting predicate or mapping function as an argument can take something uncallable instead of it with semantics described in this table:
| f passed | Predicate | Mapping function |
|---|---|---|
| None | bool | identity |
| string | re_tester(f) | re_finder(f) |
| int or slice | itemgetter(f) | itemgetter(f) |
| mapping | f.get | f.get |
| set | lambda x: x in f | lambda x: x in f |
Here is a full list of functions supporting extended predicate/mapper semantics:
| Group | Functions |
|---|---|
| Sequence transformation | map(), imap(), keep(), ikeep(), mapcat(), imapcat() |
| Sequence filtering | filter(), ifilter(), remove(), iremove(), distinct(), idistinct() |
| Sequence splitting | dropwhile(), takewhile(), split(), split_by() |
| Sequence chunking | group_by(), count_by(), partition_by(), ipartition_by() |
| Collection transformation | walk(), walk_keys(), walk_values() |
| Collection filtering | select(), select_keys(), select_values() |
| Content tests | all(), any(), none(), one(), some(), is_distinct() |
| Function logic | all_fn(), any_fn(), none_fn(), one_fn(), some_fn() |
| Function tools | compose(), complement(), juxt(), ijuxt() |