Feb. 5th, 2011

fu: Close-up of Fu, bringing a scoop of water to her mouth (Default)
The Schwartzian transform came up briefly in conversation in #dreamwidth. It is a way to sort by a calculated value, useful when calculating for said value is expensive.

I think I have seen it before, but I didn't realize it was a common enough idiom to have a name. I like how deceptively confusing it is, but once it is explained line-by-line it suddenly makes sense!
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