Why equality checks are preferable over elvis oper...
# announcementsv
ValV
10/03/2018, 7:44 PMWhy equality checks are preferable over elvis operator in case, when a boolean variable is nullabe? E.g.
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val parameter: Boolean? by param()
if (parameter != false) ... Copy code
val parameter: Boolean? by param()
if (parameter ?: true) ...👍 2
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Dominaezzz
10/03/2018, 7:48 PMLess comparisons maybe?
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karelpeeters
10/03/2018, 7:49 PMI would like some justification for this too, elvis reads better to me.
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ValV
10/03/2018, 7:49 PMI don't know how elvis works beyond the scenes, perhaps, @Dominaezzz is right about comparisons
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Dominaezzz
10/03/2018, 7:51 PMk
karelpeeters
10/03/2018, 7:52 PM Copy code
x ?: true
x != false Copy code
x != null ? x : true
Intrinsics.areEqual(x, false) ^ truekarelpeeters
10/03/2018, 7:52 PMAlthough this whole thing is moot, they should just test which one is fastest and make the compiler always emit that one for both cases.
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ValV
10/03/2018, 11:42 PMAre there any exception handlers involved?
ValV
10/03/2018, 11:43 PMWith elvis operator vs equality check
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karelpeeters
10/03/2018, 11:43 PMNot 100% sure what you're asking but neither method does anything with exceptions.
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ValV
10/03/2018, 11:45 PMAbout a hour ago experienced a Null Pointer Exception hell with javafx. Elvis helped a lot
ValV
10/03/2018, 11:46 PMThus an idea flashed about exception interception
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