In Sidebar 14.10 we noted that nonconstant patterns must generally be recompiled whenever they are used. Perl programmers who wish to reduce the resulting overhead can inhibit recompilation using the...



In Sidebar 14.10 we noted that nonconstant patterns must generally be


recompiled whenever they are used. Perl programmers who wish to reduce the resulting overhead can inhibit recompilation using the o trailing


modifier or the qr quoting operator. Investigate the impact of these mechanisms on performance. Also speculate as to the extent to which it might


be possible for the language implementation to determine, automatically


and efficiently, when recompilation should occur.

Nov 21, 2021
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