Schwartzian transform
The Schwartzian transform is a technique in computer programming used to efficiently sort an array by using the result of a computation-heavy operation without re-computing that result for every comparison performed by the sort subroutine. While the practice is named after Randal L. Schwartz, who popularized it among Perl programmers, its use in computer science dates back at least as far as the Common Lisp standard.
External links
- Mark-Jason Dominus explains the Schwartzian Transform
- Python Software Foundation (2005). 1.5.2 I want to do a complicated sort: can you do a Schwartzian Transform in Python?. Retrieved June 22, 2005.
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