diff options
| author | Leah Neukirchen <leah@vuxu.org> | 2022-12-16 00:15:35 +0100 |
|---|---|---|
| committer | Leah Neukirchen <leah@vuxu.org> | 2022-12-16 00:15:48 +0100 |
| commit | 234dbc781c328db11c3cc17a74d2c9301e5d82bf (patch) | |
| tree | 3d786a0b3289154ba2e7a012250deb66a513d3e1 /mew.svnwiki | |
| parent | a68ffccdccc9023c1beb14cae2a8d2695e517da0 (diff) | |
| download | mew-234dbc781c328db11c3cc17a74d2c9301e5d82bf.tar.gz mew-234dbc781c328db11c3cc17a74d2c9301e5d82bf.tar.xz mew-234dbc781c328db11c3cc17a74d2c9301e5d82bf.zip | |
add inject-accumulator
Diffstat (limited to 'mew.svnwiki')
| -rw-r--r-- | mew.svnwiki | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/mew.svnwiki b/mew.svnwiki index 1b8c0ae..3d30816 100644 --- a/mew.svnwiki +++ b/mew.svnwiki @@ -503,6 +503,12 @@ Two elements are considered equal if their image under {{<f>}} is {{equal?}}. Returns an accumulator that saves the {{<n>}}-th element, or an void value else. +<procedure>(inject-accumulator <f> [<init>])</procedure> + +Returns an accumulator that xfolds {{<f>}} over the elements. +If given, folding starts with {{<init>}}, else with the first element +received. + <procedure>(generator-xfold <f> <seed> <generators>...)</procedure> Like {{generator-fold}}, but {{<f>}} always takes the accumulator as |