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insert vs emplace vs operator[] in c++ map

I'm using maps for the first time and I realized that there are many ways to insert an element. You can use emplace() , operator[] or insert() , plus variants like using value_type or make_pair . While there is a lot of information about all of them and questions about particular cases, I sti...
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How to make a div 100% height of the browser window

I have a layout with two columns - a left div and a right div . 35 Answers 35 ...
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Difference between StringBuilder and StringBuffer

What is the main difference between StringBuffer and StringBuilder ? Is there any performance issues when deciding on any one of these? ...
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Matching an empty input box using CSS

...: 1px solid red; /* Red border only if the input is empty */ } More info and browser support: https://css-tricks.com/almanac/selectors/p/placeholder-shown/ share | improve this answer | ...
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How can I listen for a click-and-hold in jQuery?

...ave', function() { clearTimeout(timeoutId); }); Edit: correction per AndyE...thanks! Edit 2: using bind now for two events with same handler per gnarf share | improve this answer | ...
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Selectors in Objective-C?

First, I'm not sure I really understand what a selector is. From my understanding, it's the name of a method, and you can assign it to a class of type 'SEL' and then run methods such as respondToSelector to see if the receiver implements that method. Can someone offer up a better explanation? ...
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Return array in a function

... Is kind of just syntactic sugar. You could really replace it with this and it would still work: int fillarr(int* arr) So in the same sense, what you want to return from your function is actually a pointer to the first element in the array: int* fillarr(int arr[]) And you'll still be able t...
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Call Javascript function from URL/address bar

...yperlink, no. Not unless the page has script inside specifically for this and it's checking for some parameter....but for your question, no, there's no built-in support in browsers for this. There are however bookmarklets you can bookmark to quickly run JavaScript functions from your address bar; ...
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Limiting number of displayed results when using ngRepeat

I find the AngularJS tutorials hard to understand; this one is walking me through building an app that displays phones. I’m on step 5 and I thought as an experiment I’d try to allow users to specify how many they’d like to be shown. The view looks like this: ...
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Problems with Android Fragment back stack

I've got a massive problem with the way the android fragment backstack seems to work and would be most grateful for any help that is offered. ...