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Diffstat (limited to 'txr.1')
| -rw-r--r-- | txr.1 | 9 |
1 files changed, 9 insertions, 0 deletions
@@ -5037,6 +5037,15 @@ The ldiff operation starts with "abcd" and repeatedly applies cdr to produce Operations based on car, cdr and ldiff, such as keep-if and remq extend to strings and vectors. +Derived list processing operations such as remq or mapcar obey the following +rule: the returned object follows the type of the leftmost input list object. +For instance, if one or more sequences are processed by mapcar, and the +leftmost one is a character string, the function is expected to return +characters, which are converted to a character string. + +The lazy versions of these functions such as mapcar* do not have this behavior; +they produce lazy lists. + .SH CONTROL FLOW AND SEQUENCING When the first element of a compound expression is an operator symbol, |