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What are enums and why are they useful?

...de the same level of checking help from the compiler. Boilerplate is just more typing. But saving a lot of typing makes the programmer more efficient (see 1), so it's a worthwhile feature. It's worthwhile for at least one more reason, too: Switch statements One thing that the static final enum ...
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Ignore outliers in ggplot2 boxplot

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What is the reason why “synchronized” is not allowed in Java 8 interface methods?

...ds are entirely a syntactic optimization; they're not needed, they're just more compact than the corresponding synchronized block. There's a reasonable argument to be made that this was a premature syntactic optimization in the first place, and that synchronized methods cause more problems than the...
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bash: pip: command not found

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How can I wait In Node.js (JavaScript)? l need to pause for a period of time

...roposal is in stage 3. You can use it today by using webpack 5 (alpha), More info: Harmony Flag in Nodejs: https://nodejs.org/en/docs/es6/ All NodeJS Version for download: https://nodejs.org/en/download/releases/ share...
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In .NET, which loop runs faster, 'for' or 'foreach'?

... month, with the following conclusions: for loops on List are a bit more than 2 times cheaper than foreach loops on List. Looping on array is around 2 times cheaper than looping on List. As a consequence, looping on array using for is 5 times cheaper than looping on List using foreach...
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Among $_REQUEST, $_GET and $_POST which one is the fastest?

... $_REQUEST is supposedly (or at least used to be) more expensive than using $_POST and $_GET directly. – Darrell Brogdon Dec 17 '09 at 22:47 3 ...
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How to initialize std::vector from C-style array?

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Unnamed/anonymous namespaces vs. static functions

...are back to being essentially two ways of doing the exact same thing. For more discussion please see this SO question. Unnamed namespaces still have the advantage of allowing you to define translation-unit-local types. Please see this SO question for more details. Credit goes to Mike Percy for b...
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What does a colon following a C++ constructor name do? [duplicate]

...h happens to be empty in your example) is executed. Inside it you could do more assignments, but once you have entered it all the fields have already been initialized - either to random, unspecified values, or to the ones you chose in your initialization list. This means the assignments you do in th...