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Replace & Rationalize
- To: mathgroup at smc.vnet.net
- Subject: [mg121509] Replace & Rationalize
- From: "Chris Degnen" <degnen at cwgsy.net>
- Date: Sun, 18 Sep 2011 04:10:01 -0400 (EDT)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
Further to a question on Stack Overflow I noticed a puzzling
evaluation. Why does the second expression generate reals?
(x \[Function]
If[IntegerQ[Rationalize[x]], Rationalize[x], x]) /@ {0., 1.}
{0., 1.} /. x_ /; IntegerQ[Rationalize[x]] -> Rationalize[x]
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