diff options
Diffstat (limited to 'txr.1')
| -rw-r--r-- | txr.1 | 44 |
1 files changed, 44 insertions, 0 deletions
@@ -25301,6 +25301,50 @@ to The function returns .codn nil . +.coNP Function @ hash-revget +.synb +.mets (hash-revget < hash < value >> [ testfun <> [ keyfun ]]) +.syne +.desc +The +.code hash-revget +function performs a reverse lookup on +.metn hash . + +It searches through the entries stored in +.meta hash +for an entry whose value matches +.metn value . + +If such an entry is found, that entry's key is returned. +Otherwise +.code nil +is returned. + +If multiple matching entries exist, it is not specified which entry's +key is returned. + +The +.meta keyfun +function is applied to each value in +.meta hash +and the resulting value is compared with +.metn value . +The default +.meta keyfun +is the +.code identity +function. + +The comparison is performed using +.metn testfun . + +The default +.meta testfun +is the +.code eql +function. + .coNP Functions @ hash-eql and @ hash-equal .synb .mets (hash-eql << object ) |