How to detect "empty" elements inside a tikz \foreach statement – tex.stackexchange.com

How to detect "empty" elements inside a tikz \foreach statement – tex.stackexchange.com

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I want to define a macro that feeds its contents into a tikz \foreach statement, for example: \newcommand\Macro[1]{ \foreach \x in {#1} {x=\x.} } which is then used as \Macro{1,2,3,4}. Sometimes, I ...

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