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What is more efficient: Dictionary TryGetValue or ContainsKey+Item?
... @JohnGardner Yes, which is what I said - but if you do ContainsKey then get Item, you're doing that work 2x instead of 1x.
– Reed Copsey
Jun 2 '16 at 18:45
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Set transparent background of an imageview on Android
...olor name="black">#000000</color>
Now if you want to use opacity then you can use the below code:
<color name="black">#99000000</color>
And the below for opacity code:
100% — FF
95% — F2
90% — E6
85% — D9
80% — CC
75% — BF
70% — B3
65% — A6
60% — 99
55% — 8...
How to enter in a Docker container already running with a new TTY
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@Pithikos: I'm able to use exec to run a shell and then su someuser to change user. Running Docker 1.4.1
– lsh
Mar 2 '15 at 13:56
2
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Most used parts of Boost [closed]
...r<FILE> fp( fopen(myfilename, "a+t"), safeclose );
//body of the function, and when ever it exits the file gets closed
fprintf( fp.get(), "a message\n" );
}
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Multiple cases in switch statement
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The collapsed code gets lengthened to the first example in the question. May as well just do it the way it is in the question.
– MetalPhoenix
Dec 5 '14 at 19:54
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实时开发、测试和调试工具 · App Inventor 2 中文网
...用 隐私策略和使用条款 技术支持 service@fun123.cn
What's your most controversial programming opinion?
...lly good at C# or Java or whatever other language you started out learning then that's all you need. I don't believe it- every language I have ever learned has taught me something new about programming that I have been able to bring back into my work with all the others. I think that anyone who rest...
Reasons that the passed Intent would be NULL in onStartCommand
... @MuhammadNaderi you can just make intent to Intent?. Worked for me. But then of course you need to correctly handle null intent.
– Patrick Boos
Jul 4 '18 at 11:24
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Equivalent of String.format in jQuery
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Constructing (and then discarding) a RegEx object for each and every argument each time format gets called might overtax the garbage collector.
– mckoss
Mar 18 '11 at 5:54
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Most efficient way to prepend a value to an array
...difying the array in-place. If you really can't mutate the original array then you would do something like the below snippet, which doesn't seem to be appreciably faster than your solution:
a.slice().unshift(0); // Use "slice" to avoid mutating "a".
[Edit 2]
For completeness, the following func...