Fix of the compare function#245
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jonschlinkert merged 1 commit intohelpers:masterfrom Feb 13, 2017
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The previous version of the compare function was not consistent (it did not follow the requirements on the compare function), see https://tc39.github.io/ecma262/#sec-array.prototype.sort for details. You can see that the compare function is not correct by using it to sort larger arrays. For example, if you sort the letters of a well known sentence: `"the quick brown fox jumps over the lazy dog".split('').sort((a,b) => a>b).join('')` returns `"uge d ac be e f otjhmpsnooqrothrkliuvwxyz"` on Node.js 6.7.0. While `"the quick brown fox jumps over the lazy dog".split('').sort((a,b) => a > b ? 1 : (a < b ? -1 : 0)).join('')` returns the correct result `' abcdeeefghhijklmnoooopqrrsttuuvwxyz'`.
Member
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Thanks I'm surprised I didn't catch that. I have other sorting libs that do this. thanks for the fix. |
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Author
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Thanks for your fast response!
It is funny that you have mentioned that. I have a similar PR waiting for a merge jonschlinkert/array-sort#4 in that repository as well ;-). |
Member
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ha, well I might as well give up on sorting lol. Thanks, and sorry it has taken so long to get back to that issue. I'll try to get these merged and published today. I really appreciate it |
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The previous version of the compare function was not consistent (it did not follow the requirements on the compare function), see https://tc39.github.io/ecma262/#sec-array.prototype.sort for details. You can see that the compare function is not correct by using it to sort larger arrays. For example, if you sort the letters of a well known sentence:
"the quick brown fox jumps over the lazy dog".split('').sort((a,b) => a>b).join('')returns
"uge d ac be e f otjhmpsnooqrothrkliuvwxyz"on Node.js 6.7.0. While"the quick brown fox jumps over the lazy dog".split('').sort((a,b) => a > b ? 1 : (a < b ? -1 : 0)).join('')returns the correct result' abcdeeefghhijklmnoooopqrrsttuuvwxyz'.