[Python-Dev] Interning string subtype instances

Greg Ewing greg.ewing at canterbury.ac.nz
Tue Feb 13 02:03:12 CET 2007


Josiah Carlson wrote:
> def intern(st):
>     ...
> 
> If I remember the implementation of intern correctly, that's more or
> less what happens under the covers.

That doesn't quite give you everything that real interning
does, though. The string comparison method knows when both
strings are interned, so it can compare them quickly
whether they are equal or not. Your version could detect
equal strings quickly, but not unequal strings.

--
Greg


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