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Is it valid to replace http:// with // in a ?

...complying with the URI syntax specified in the RFC. Your example is valid and should work. I've used that relative URL method myself on heavily trafficked sites and have had zero complaints. Also, we test our sites in Firefox, Safari, IE6, IE7 and Opera. These browsers all understand that URL fo...
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Preview an image before it is uploaded

...lementation of this. Works like a charm. @kxc you should make an ajax call and send input.files[0] as data, see jQuery's doc. – Sumi Straessle Mar 13 '17 at 9:07 ...
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Convert Int to String in Swift

... Converting Int to String: let x : Int = 42 var myString = String(x) And the other way around - converting String to Int: let myString : String = "42" let x: Int? = myString.toInt() if (x != nil) { // Successfully converted String to Int } Or if you're using Swift 2 or 3: let x: Int? ...
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Is there a stopwatch in Java?

.... As documented by nanoTime, the value returned has no absolute meaning, and can only be interpreted as relative to another timestamp returned by nanoTime at a different time. Stopwatch is a more effective abstraction because it exposes only these relative values, not the absolute ones. ...
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Python multiprocessing pool.map for multiple arguments

... The answer to this is version- and situation-dependent. The most general answer for recent versions of Python (since 3.3) was first described below by J.F. Sebastian.1 It uses the Pool.starmap method, which accepts a sequence of argument tuples. It then au...
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Unknown provider: $modalProvider

...rror occurs when you write in a dependency for a controller, service, etc, and you haven't created or included that dependency. In this case, $modal isn't a known service. It sounds like you didn't pass in ui-bootstrap as a dependency when bootstrapping angular. angular.module('myModule', ['ui.boot...
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The conversion of a datetime2 data type to a datetime data type resulted in an out-of-range value

...bject that has only been populated with data in the form (headline, story, and image). ApplyPropertyChanges applies changes to all properties of the object, including your uninitialized DateTime, which is set to 0001-01-01, which is outside of the range of SQL Server's DATETIME. Rather than using ...
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How to return smart pointers (shared_ptr), by reference or by value?

...al C++ compilers implement RVO even when all optimizations are turned off. And with C++11's move semantics, this concern is even less relevant. (But the only way to be sure is to profile and experiment.) If you're still not convinced, Dave Abrahams has an article that makes an argument for returnin...
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How to Reverse Fragment Animations on BackStack?

... According to the android documentation for custom animation: Change: ft.setCustomAnimations(R.anim.slide_in, R.anim.hyperspace_out); To: ft.setCustomAnimations(R.anim.slide_in, R.anim.hyperspace_out, R.anim.hyperspace_in, R.anim.slide_ou...
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How to create a shared library with cmake?

...um_required(VERSION 3.9) You should declare a project. cmake says it is mandatory and it will define convenient variables PROJECT_NAME, PROJECT_VERSION and PROJECT_DESCRIPTION (this latter variable necessitate cmake 3.9): project(mylib VERSION 1.0.1 DESCRIPTION "mylib description") Declare a ne...