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| author | Steve Bennett <steveb@workware.net.au> | 2020-12-25 08:19:54 +1000 |
|---|---|---|
| committer | Steve Bennett <steveb@workware.net.au> | 2020-12-26 18:08:30 +1000 |
| commit | 0127e81ddcc824d2985e5c63dd2942689b5d39e3 (patch) | |
| tree | d5f9ba387846cc30960cdf513931c3c0b0825dd3 /jim_tcl.txt | |
| parent | 5283ac52f4b93748b5aac560cd26ae0a71153a63 (diff) | |
| download | jimtcl-0127e81ddcc824d2985e5c63dd2942689b5d39e3.zip jimtcl-0127e81ddcc824d2985e5c63dd2942689b5d39e3.tar.gz jimtcl-0127e81ddcc824d2985e5c63dd2942689b5d39e3.tar.bz2 | |
loop: Allow start value to be omitted
It is convenient to be able to do just:
loop i 5 {
body
}
Where the start value is 0.
Signed-off-by: Steve Bennett <steveb@workware.net.au>
Diffstat (limited to 'jim_tcl.txt')
| -rw-r--r-- | jim_tcl.txt | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/jim_tcl.txt b/jim_tcl.txt index 1a2b18a..24ea60b 100644 --- a/jim_tcl.txt +++ b/jim_tcl.txt @@ -58,6 +58,7 @@ Changes since 0.80 2. Many commands now accept "safe" integer expressions rather than simple integers: `loop`, `range`, `incr`, `string repeat`, `lrepeat`, `pack`, `unpack`, `rand` 3. String and list indexes now accept integer expressions (<<_string_and_list_index_specifications,STRING AND LIST INDEX SPECIFICATIONS>>) +4. `loop` can now omit start value Changes between 0.79 and 0.80 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ @@ -3068,7 +3069,7 @@ Also see `defer` as another mechanism for cleaning up at the end of a procedure. loop ~~~~ -+*loop* 'var first limit ?incr? body'+ ++*loop* 'var ?first? limit ?incr? body'+ Similar to `for` except simpler and possibly more efficient. If +'incr'+ is positive, the effect is, equivalent to: @@ -3079,11 +3080,12 @@ If +'incr'+ is positive, the effect is, equivalent to: While if +'incr'+ is negative, the count is downwards. +If +'first'+ is not specified, 0 is used. If +'incr'+ is not specified, 1 is used. Note that setting the loop variable inside the loop does not affect the loop count. -Integer parameters may be any integer expression. ++'first'+, +'limit'+ and +'incr'+ may be any integer expression. lindex ~~~~~~ |