Constants 0 & 1 are special cased exclusions from the "void context" warning because they are so useful.

Eg. 1 while s[...][...]g;; does search and replace until no more matches are found.

There are many other examples of the utility of having 0, 1 & undef in a void context fail to warn. I seem to recall a thread that listed them; though a cursory search failed to locate same.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
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In reply to Re: warnings pragma anomaly by BrowserUk
in thread warnings pragma anomaly by Athanasius

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