Hi all, does anyone have any tips on how to insert debugging or logging statements through a program? Here are two possibilities:
another thing I found quite useful is to add a component { .. , info :: Doc } to my data types, and then set its value at each function call:
f x y = ( ... ) { info = parens $ fsep [ text "f", info x, info y ] }
( I figure this is sort of part of what some tools can do automatically? )
that way you always know who built what. and it's cheap - if you don't use this information, then it's never created (due to laziness).
best regards, -- -- Johannes Waldmann, Tel/Fax: (0341) 3076 6479 / 6480 -- ------ http://www.imn.htwk-leipzig.de/~waldmann/ ---------
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