编辑“Template:Strlen short”

<noinclude><!--
-=============================================================
- Strlen_short - Get string length of short strings fast
-=============================================================
-                                  (see NOTES at bottom)
--></noinclude>{{
{{{|safesubst:}}}#switch: x{{{1|}}}<noinclude><!--use "x" to
  -- avoid comparing numbers equal at decimal point.--></noinclude>
  | {{{{{|safesubst:}}}padleft:|6|x{{{1}}}}} = 5
  | {{{{{|safesubst:}}}padleft:|7|x{{{1}}}}} = 6
  | {{{{{|safesubst:}}}padleft:|5|x{{{1}}}}} = 4
  | {{{{{|safesubst:}}}padleft:|8|x{{{1}}}}} = 7
  | {{{{{|safesubst:}}}padleft:|4|x{{{1}}}}} = 3
  | {{{{{|safesubst:}}}padleft:|9|x{{{1}}}}} = 8
  | {{{{{|safesubst:}}}padleft:|3|x{{{1}}}}} = 2
  | {{{{{|safesubst:}}}padleft:|10|x{{{1}}}}} = 9
  | {{{{{|safesubst:}}}padleft:| 2|x{{{1}}}}} = 1
  | {{{{{|safesubst:}}}padleft:|11|x{{{1}}}}} = 10
  | {{{{{|safesubst:}}}padleft:|12|x{{{1}}}}} = 11
  | {{{{{|safesubst:}}}padleft:|13|x{{{1}}}}} = 12
  | {{{{{|safesubst:}}}padleft:|14|x{{{1}}}}} = 13
  | {{{{{|safesubst:}}}padleft:|15|x{{{1}}}}} = 14
  | {{{{{|safesubst:}}}padleft:|16|x{{{1}}}}} = 15
  | {{{{{|safesubst:}}}padleft:|17|x{{{1}}}}} = 16
  | {{{{{|safesubst:}}}padleft:|18|x{{{1}}}}} = 17
  | {{{{{|safesubst:}}}padleft:|19|x{{{1}}}}} = 18
  | {{{{{|safesubst:}}}padleft:|20|x{{{1}}}}} = 19
  | {{{{{|safesubst:}}}padleft:|21|x{{{1}}}}} = 20
  | {{{{{|safesubst:}}}padleft:|22|x{{{1}}}}} = 21
  | {{{{{|safesubst:}}}padleft:|23|x{{{1}}}}} = 22
  | {{{{{|safesubst:}}}padleft:|24|x{{{1}}}}} = 23
  | {{{{{|safesubst:}}}padleft:|25|x{{{1}}}}} = 24
  | {{{{{|safesubst:}}}padleft:|26|x{{{1}}}}} = 25
  | {{{{{|safesubst:}}}padleft:|27|x{{{1}}}}} = 26
  | {{{{{|safesubst:}}}padleft:|28|x{{{1}}}}} = 27
  | {{{{{|safesubst:}}}padleft:|29|x{{{1}}}}} = 28
  | {{{{{|safesubst:}}}padleft:|30|x{{{1}}}}} = 29
  | {{{{{|safesubst:}}}padleft:|31|x{{{1}}}}} = 30
  | {{{{{|safesubst:}}}padleft:|32|x{{{1}}}}} = 31
  | {{{{{|safesubst:}}}padleft:|33|x{{{1}}}}} = 32
  | {{{{{|safesubst:}}}padleft:|34|x{{{1}}}}} = 33
  | {{{{{|safesubst:}}}padleft:|35|x{{{1}}}}} = 34
  | {{{{{|safesubst:}}}padleft:|36|x{{{1}}}}} = 35
  | {{{{{|safesubst:}}}padleft:|37|x{{{1}}}}} = 36
  | {{{{{|safesubst:}}}padleft:|38|x{{{1}}}}} = 37
  | {{{{{|safesubst:}}}padleft:|39|x{{{1}}}}} = 38
  | {{{{{|safesubst:}}}padleft:|40|x{{{1}}}}} = 39
  | {{{{{|safesubst:}}}padleft:|41|x{{{1}}}}} = 40
  | {{{{{|safesubst:}}}padleft:|42|x{{{1}}}}} = 41
  | {{{{{|safesubst:}}}padleft:|43|x{{{1}}}}} = 42
  | {{{{{|safesubst:}}}padleft:|44|x{{{1}}}}} = 43
  | {{{{{|safesubst:}}}padleft:|45|x{{{1}}}}} = 44
  | {{{{{|safesubst:}}}padleft:|46|x{{{1}}}}} = 45
  | {{{{{|safesubst:}}}padleft:|47|x{{{1}}}}} = 46
  | {{{{{|safesubst:}}}padleft:|48|x{{{1}}}}} = 47
  | {{{{{|safesubst:}}}padleft:|49|x{{{1}}}}} = 48
  | {{{{{|safesubst:}}}padleft:|50|x{{{1}}}}} = 49
  | {{{{{|safesubst:}}}padleft:|51|x{{{1}}}}} = 50
  | x = 0
  | #default = {{{extra|-1}}}
}}<noinclude><!--
--------------------------------------------------------------
--NOTES
--    [ These comments are skipped by <noinclude> so they will
--      be omitted & not sent in a formatted Internet page. ]
--
-- NOTE A1: This template counts the length of string {1} by
--      comparing with the string truncated to 'n' long in a
--      #switch for each length of {padleft:|n|{1} }. The first
--      match will exit the #switch with the length number.
--
-- NOTE N2: This template was designed to use minimal levels
--      as 2, to avoid the "expansion depth limit" when used
--      in very large templates. By comparison, {str_len} was
--      using over 9 levels of 40 total, during 2010.
--
-- NOTE P3: To speed the results, the check for length is based
--      on probability of an average length of 6, typically as
--      between 1-12, then comparing for longer lengths 13-50,
--      in sequence. Upon the first match, then checking stops.
--
-- NOTE S4: This template can be subst-substituted by using
--      {{subst:strlen_short|...}} to save only the results, or
--      {{{{{|safesubst:}}}strlen_short}} using blank parameter.
--
--------------------------------------------------------------
--HISTORY:
--28Dec10 Created to count a string length in unnested logic.
--28Dec10 Put NOTES comments to explain template coding.
--28Dec10 Put HISTORY comments to log major changes (not typos).
--
-->
{{documentation}}

[[Category:格式模板]]
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