Re: [Chicken-hackers] substring function and bounds checks

[John Cowan]

Alex Shinn scripsit:

> Can you provide a real-world example where you'd want to use this
> function?

I used to use it all the time in Perl, where it is the normal behavior
of the substr() function, to pull a fixed-width field out of a line of
text without having to worry about short lines.  If the field was at the
end of the line, the result was short; if the field was not present, the
result was the empty string.  In some contexts, I would then concatenate
spaces to it and truncate the result to the desired width.

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