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Why is it bad practice to call System.gc()?

...ny that rely on it for performance are most likely broken. You don't know what sort of garbage collector you are running under. There are certainly some that do not "stop the world" as you assert, but some JVMs aren't that smart or for various reasons (perhaps they are on a phone?) don't do it. Y...
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Mixing a PHP variable with a string literal

...red. Calling functions in the middle of preparing your output it often not what you want. Consider calling the function first, storing the result in a variable and then you can include it in the string echo "like so: $var";. – Jochem Kuijpers Jul 13 '18 at 1:21...
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Why does integer overflow on x86 with GCC cause an infinite loop?

...e. as i recall it's possible to make them trap on overflow, but that's not what we're talking about here, and i've never seen it done. other than that, and disregarding x86 bcd operations (not permitted representation in C++) x86 integer ops always wrap, because they're two's complement. you're mist...
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What is the default form HTTP method?

When an HTML form is submitted without specifying a method, what is the default HTTP method used? GET or POST? 5 Answers ...
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Why is this inline-block element pushed downward?

...ders understanding the real issue. First of all we have to establish that what's the real question? Its that why "inline-block" element is pushed downward. Now we start to understand it and remove the clutter first. 1 - Why not give all three divs same border width? Let's give it. 2 - Does floa...
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find all unchecked checkbox in jquery

...checkbox that I use to check|uncheck all checkboxes. Since I want to know what value I'm passing to the database I set these to off, since the checkboxes give me a value of on. //looking for unchecked checkboxes, but don’t include the checkbox all that checks or unchecks all checkboxes //.map - ...
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Colorizing text in the console with C++

... What if i want to add several colors in one line?. – Fadwa Jan 10 '17 at 9:53 2 ...
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In a storyboard, how do I make a custom cell for use with multiple controllers?

... view controller that has some prototype cells out of a storyboard, here's what happens: Each prototype cell is actually its own embedded mini-nib. So when the table view controller is loading up, it runs through each of the prototype cell's nibs and calls -[UITableView registerNib:forCellReuseIde...
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What is the difference between t.belongs_to and t.references in rails?

What is the difference between t.references and t.belongs_to ? Why are we having those two different words? It seems to me they do the same thing? Tried some Google search, but find no explanation. ...
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Why aren't programs written in Assembly more often? [closed]

...r compiler and your old code can easily make use of the new instructions. What if the next CPU has twice as many registers? The converse of this question would be: What functionality do compilers provide? I doubt you can/want to/should optimize your ASM better than gcc -O3 can. ...