[Guido] >>> For strings there is no compact notation like "+0.0" if you want to >>> convert to string or Unicode -- adding "" might work in Perl, but not >>> in Python. BTW, "+0.0" is not a correct way to "boundedly coerce" to float under 754 arithmetic; "*1.0" is safer (the former does not always preserve the sign bit of a float zero correctly, but the latter does). [Paul Prescod] >> Actually, these days, foo+"" works in a LOT of languages. Perl, Java and >> JavaScript for sure. [Guido] > Really? Does 3+"" really convert the 3 to a string in Java? I don't remember about that specifically, but believe ""+3 does. OTOH, in *Perl* 3+"" converts "" to the *number* 0 and leaves 3 alone. >> Python's strictness about this issue has never caught a bug for me. It >> has only caused errors. > Are you sure? This is the kind of error where you immediately see > what's wrong and move on to the next bug. It's certainly caught errors for me, and especially when introducing Perl programmers to Python, where "they expect" string+number to convert the string to a number, apparently the opposite of the arbitrary choice Paul prefers. It's ambiguous as hell -- screw it.
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