diff options
Diffstat (limited to 'txr.1')
| -rw-r--r-- | txr.1 | 40 |
1 files changed, 40 insertions, 0 deletions
@@ -35409,6 +35409,46 @@ the leftmost one is reported. See the notes under .code pos-max regarding duplicate maxima. +.coNP Functions @ find-max-key and @ find-min-key +.synb +.mets (find-max-key < iterable [ testfun <> [ keyfun ]]) +.mets (find-min-key < iterable [ testfun <> [ keyfun ]]) +.syne +.desc +The +.code find-min-key +and +.code find-max-key +functions have the same argument conventions as, respectively, +.code find-max +and +.code find-min +and agree with those functions in regard to which element of the +input sequence is identified: all these functions identify the +element which maximizes or minimizes the value of +.metn keyfun . + +Whereas +.code find-max +and +.code find-min +return the maximizing or minimizing element itself, the +.code find-max-key +and +.code find-min-key +functions return the value of +.meta keyfun +applied to the element. + +Under the default +.meta keyfun +value, that being the +.code identity +function, these functions behave the same as +.code find-max +and +.codn find-min . + .coNP Functions @, uni @, isec @ diff and @ symdiff .synb .mets (uni < iter1 < iter1 >> [ testfun <> [ keyfun ]]) |