If the format is sufficiently simple a regex can be a very neat way to express the idea. Mostly people use parser combinators. Have a look at parsec / attoparsec on hackage.

Ben

On Sun Feb 22 2015 at 18:50:18 Roelof Wobben <r.wobben@home.nl> wrote:
Hello,

Im still busy with CIS 194

Now im facing this problem.

There is a log file of strings.

Most of them are of this format   char  Number [chars]

What is the best way to check if the string has this format ?

Regex or another way ?

Roelof

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