diff options
Diffstat (limited to 'txr.1')
| -rw-r--r-- | txr.1 | 22 |
1 files changed, 13 insertions, 9 deletions
@@ -14735,19 +14735,14 @@ function produces a list whose elements are all of the .cod2 non- nil atoms contained in the structure of .metn list . + The .code flatten* function works like .code flatten -except that -.code flatten -creates and returns a complete -flattened list, whereas -.code flatten* -produces a lazy list which is -instantiated on demand. This is particularly useful when the input -structure is itself lazy. +except that it produces a lazy list. It can be used to lazily flatten an +infinite lazy structure. .TP* Examples: .cblk @@ -14762,9 +14757,10 @@ structure is itself lazy. (flatten '(((()) ()))) -> nil .cble -.coNP Function @ flatcar +.coNP Functions @ flatcar and @ flatcar* .synb .mets (flatcar << tree ) +.mets (flatcar* << tree ) .syne .desc The @@ -14787,6 +14783,14 @@ atoms which appear in .code cdr fields. +The +.code flatcar* +function +works like +.code flatcar +except that it produces a lazy list. It can be used to lazily flatten an +infinite lazy structure. + .TP* Examples: .cblk (flatcar '(1 2 () (3 4))) -> (1 2 nil 3 4) |