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copied!<p>Trying to <em>guess</em> the locale of anything is always an ongoing effort, at best. What are you using this function for? The following tests look simply wrong to me:</p> <pre><code>ok(&parse_decimal("12.34") == 12.34); ok(&parse_decimal("12.345") == 12345); </code></pre> <p>If I were parsing a single document with values on it I would be very irritated to find this result.</p> <p>I would design this function with some knobs and dials in the package to use either the locale information (using <a href="http://perldoc.perl.org/perllocale.html#The-localeconv-function" rel="nofollow noreferrer">localeconv()</a>) or ad-hoc values (like in <a href="https://stackoverflow.com/questions/1487629/regexp-perl-code-for-handling-both-dots-and-commas-as-valid-decimal-separators/1487663#1487663">this answer</a>.)</p> <p><strong>Edit:</strong> Okay, let me try to explain it better. For "single source" I mean a context or scope delimiter. I know you can import from different sources; that's the very nature of importing data. We also know that we cannot know beforehand the encoding of these different sources.</p> <p>What I would do is to is to do a preliminary scan of the file being imported (just taking a sample, not reading it whole) and check the numeric values. If I can determine the locale from the sample, then I would try to import the whole file <strong>using the same locale</strong>. To me, one file is a single source, and I wouldn't expect it to suddenly change its locale.</p> <p>That's why I would ask again: what is the purpose of this program?</p>

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