mirror/guile
mirror/guile
1
Fork 0
mirror of https://git.savannah.gnu.org/git/guile.git synced 2025-06-10 14:00:21 +02:00
Code Activity

(SRFI-1 Length Append etc): Add count.

Browse source
This commit is contained in:
Kevin Ryde 2003-05-03 22:27:14 +00:00
parent 004fe2c802
commit e508c8630c
1 changed files with 14 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

14
doc/ref/srfi-modules.texi
View file

@ -381,6 +381,20 @@ first containing the first elements of each lists and the second
containing the second elements of each lists, and so on.
@end deffn
@deffn {Scheme Procedure} count pred lst1 @dots{} lstN
Return a count of the number of times @var{pred} returns true when
called on elements from the given lists.
@var{pred} is called with @var{N} parameters @code{(@var{pred}
@var{elem1} @dots{} @var{elemN})}, each element being from the
corresponding @var{lst1} @dots{} @var{lstN}. The first call is with
the first element of each list, the second with the second element
from each, and so on.
Counting stops when the end of the shortest list is reached. At least
one list must be non-circular.
@end deffn
@node SRFI-1 Fold and Map
@subsection Fold, Unfold & Map