In my programs, if I have a string that doesn't need variable or backslash interpolation, I take pains to use single quotes. The rationale is, "Why arouse all that interpolation machinery when you don't have to. The program will probably run faster without it." But I notice in the literature and in many CPAN modules I've examined that double quotes are used with reckless abandon when single quotes would do. So I'm wondering, "Am I really gaining anything by my practice? Or does a double-quoted string with nothing to interpolate get caught at compile-time, with the compiler substituting simpler, non-interpolating code?"

In reply to Overuse of double quotes? by Anonymous Monk

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