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tex:triky [2010/07/02 18:36]
bejcek comparing two strings 		tex:triky [2010/07/12 11:08]
bejcek latex packages
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       * ''The variable \if#\variable# is empty.\else contains \variable.\fi''\\ (''\variable'' naturally cannot contain '''#'****'')       * ''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''       * ''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}'' +    * **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...)+      * (The grouping is needed there to make '\1' and '\2' local but '\sametrue' global.)
       * [[http://www.tug.org/TUGboat/Articles/tb22-4/tb72wilson.pdf|(source, Peter Wilson)]]       * [[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''     * allocator **''\newif''** is used in a sequention:\\ a declaration ''\newif\ifsomething''\\ setting either ''\somethingtrue'' or ''\somethingfalse''\\ and asking ''\ifsomething YES\else NO\fi''
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           \nobreak\hfill\penalty71\hskip2em           \nobreak\hfill\penalty71\hskip2em
           \hbox{#1}\par}</code>           \hbox{#1}\par}</code>
 +  * Useful **packages**: 
 +    * Source printing: //''fancyvrb''//
  
 ==== počítání slov (a dalších věcí) ==== ==== počítání slov (a dalších věcí) ====

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