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| author | Leah Neukirchen <leah@vuxu.org> | 2022-10-30 18:00:39 +0100 |
|---|---|---|
| committer | Leah Neukirchen <leah@vuxu.org> | 2022-10-30 18:00:39 +0100 |
| commit | 4c876b0fa6636e2a661594829cd5dc7421241cf7 (patch) | |
| tree | 13eb161afe8dac746f0502d71e111552c8a32e3e /mew.svnwiki | |
| parent | c703c1170def0cf0a41282a713665ac91847f7da (diff) | |
| download | mew-4c876b0fa6636e2a661594829cd5dc7421241cf7.tar.gz mew-4c876b0fa6636e2a661594829cd5dc7421241cf7.tar.xz mew-4c876b0fa6636e2a661594829cd5dc7421241cf7.zip | |
add tally-accumulator, group-by-accumulator
Diffstat (limited to 'mew.svnwiki')
| -rw-r--r-- | mew.svnwiki | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/mew.svnwiki b/mew.svnwiki index 2339394..93e2f01 100644 --- a/mew.svnwiki +++ b/mew.svnwiki @@ -253,6 +253,16 @@ Finally, return the result of accumulation. If {{<acc>}} is a list/vector/hash-table/string, accumulate into a corresponding accumulator initialized to {{<acc>}}. +<procedure>(tally-accumulator)</procedure> + +Returns an accumulator that counts how often each element was +accumulated. The accumulator results in a hash-table of objects to +numbers. + +<procedure>(group-by-accumulator <f>)<procedure> + +Returns an accumulator that stores all elements in lists in a hash-table, +applying {{<f>}} to the element to compute the key. == Regular expressions |