refcard

便利なrefcard

正規表現

http://www.ilovejackdaniels.com/cheat-sheets/regular-expressions-cheat-sheet/
http://www.ilovejackdaniels.com/regular_expressions_cheat_sheet.pdf

texなど

http://www.stevengould.org/portfolio/independent/docxx-refcard/DOCppRefCard.pdf

html

http://www.ilovejackdaniels.com/cheat-sheets/html-cheat-sheet/
http://www.ilovejackdaniels.com/html-cheat-sheet.pdf

javascript

http://www.ilovejackdaniels.com/cheat-sheets/javascript-cheat-sheet/
http://www.ilovejackdaniels.com/javascript_cheat_sheet.pdf

C言語

http://refcards.com/docs/silvermanj/ansi-c/ansi-c-refcard-a4.pdf