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| author | Kaz Kylheku <kaz@kylheku.com> | 2014-02-11 16:42:33 -0800 |
|---|---|---|
| committer | Kaz Kylheku <kaz@kylheku.com> | 2014-02-11 16:42:33 -0800 |
| commit | 15dda4428072bb741d6bf42fa4906b217fc2aeb1 (patch) | |
| tree | 56e8975170bac4dbf3c5cfa526b59667066732eb /txr.1 | |
| parent | 8910536efaa12182a4ae0158783a1bb1426cdf04 (diff) | |
| download | txr-15dda4428072bb741d6bf42fa4906b217fc2aeb1.tar.gz txr-15dda4428072bb741d6bf42fa4906b217fc2aeb1.tar.bz2 txr-15dda4428072bb741d6bf42fa4906b217fc2aeb1.zip | |
* eval.c (eval_init): Turn a require argument into an optional
one for the functions some, all and none.
* lib.c (some_satisfy, all_satisfy, none_satisfy): Add defaulting
behavior for pred parameter.
* txr.1: Document that the predicate function is optional
in calls to some, all and none.
Diffstat (limited to 'txr.1')
| -rw-r--r-- | txr.1 | 9 |
1 files changed, 5 insertions, 4 deletions
@@ -7369,9 +7369,9 @@ Examples: .TP Syntax: - (some <list> <predicate-fun> [<key-fun>]) - (all <list> <predicate-fun> [<key-fun>]) - (none <list> <predicate-fun> [<key-fun>]) + (some <list> [ <predicate-fun> [<key-fun>] ]) + (all <list> [ <predicate-fun> [<key-fun>] ]) + (none <list> [ <predicate-fun> [<key-fun>] ]) .TP Description @@ -7380,7 +7380,8 @@ The some, all and none functions apply a predicate test function <predicate-fun> over a list of elements. If the argument <key-fun> is specified, then values <list> are passed into <key-fun>, and <predicate-fun> is applied to the resulting values. If <key-fun> is omitted, the behavior is -as if <key-fun> is the identity function. +as if <key-fun> is the identity function. If <predicate-fun> is omitted, +the behavior is as if <predicate-fun> is the identity function. These functions have short-circuiting semantics and return conventions similar to the and and or operators. |