placeholders

Placeholders for use while developing Haskell code

While working on some Haskell code, it is often useful to work incrementally by inserting @undefined@ as a placeholder for missing code. This library provides placeholders that produce better messages when evaluated at run-time and also generate compile-time warnings so that they do not get forgotten so easily. For details, see <http://github.com/ahammar/placeholders>

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