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0 pointswereHamster12y ago0 comments

> Additionally, as a matter of culture, Haskell programmers rarely throw exceptions.

The writers of unix and other base libraries would disagree. See for example `head`. Or most functions that calls into C where the C function fails with an error. In that case Haskell blows up into your face, and you have to wrap the function invocation in a catch.

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4 comments · 1 top-level

Peaker12y ago· 3 in thread

Or replace head with a better function.

mercurial12y ago

See the fantastic errors module, which has safe versions of head, etc.

epsylon12y ago

Or use pattern matching.

mercurial12y ago

Pattern matching is great, you can usually use it instead of head, but you want something like Control.Error.Safe.tryRead to replace other unsafe functions like read.

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