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tex:triky [2010/06/24 15:35]
stranak 		tex:triky [2010/07/02 18:36]
bejcek comparing two strings
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   * Useful page (and a figure) for **lists**:   * Useful page (and a figure) for **lists**:
     * http://latex.computersci.org/Reference/ListEnvironments     * http://latex.computersci.org/Reference/ListEnvironments
 +
 +  * The **if** condition in TeX:
 +    * construction **if ''\variable'' is empty**:
 +      * ''The variable \if#\variable# is empty.\else contains \variable.\fi''\\ (''\variable'' naturally cannot contain '''#'****'')
 +      * ''The variable \ifx\@empty\variable is empty.\else contains \variable.\fi''
 +    * **comparing** two strings:\\ ''\newif\ifsame\\ \newcommand{\strcfstr}[2]{%\\ \samefalse\\ \begingroup\\ \def\1{#1}\def\2{#2}%\\ \ifx\1\2\endgroup \sametrue\\ \else   \endgroup\\ \fi}''
 +      * (I don't know why the grouping is needed there...)
 +      * [[http://www.tug.org/TUGboat/Articles/tb22-4/tb72wilson.pdf|(source, Peter Wilson)]]
 +    * allocator **''\newif''** is used in a sequention:\\ a declaration ''\newif\ifsomething''\\ setting either ''\somethingtrue'' or ''\somethingfalse''\\ and asking ''\ifsomething YES\else NO\fi''
  
   * **foreach** in TeX <html><font color="gray" size="-5">(thanks to TMA)</font></html>:   * **foreach** in TeX <html><font color="gray" size="-5">(thanks to TMA)</font></html>:

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