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Clicking the back button twice to exit an activity

...otlin Activity: private var doubleBackToExitPressedOnce = false override fun onBackPressed() { if (doubleBackToExitPressedOnce) { super.onBackPressed() return } this.doubleBackToExitPressedOnce = true Toast.makeText(this, "Please click BACK ...
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What does @: (at symbol colon) mean in a Makefile?

... Don't make fun of my typing, you'll be old someday too. – Charlie Martin Dec 22 '11 at 23:46 4 ...
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Type or namespace name does not exist [closed]

...t change the Target-frameworks of the projects? – Raj123 Jun 10 '15 at 14:01  |  show 9 more comments ...
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Sending Arguments To Background Worker?

... You start it like this: int value = 123; bgw1.RunWorkerAsync(argument: value); // the int will be boxed and then private void worker_DoWork(object sender, DoWorkEventArgs e) { int value = (int) e.Argument; // the 'argument' parameter resurfaces here ...
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How do I fix “Failed to sync vcpu reg” error?

...BI=x86, and I was running on a macbook pro. – guyland123 Nov 20 '15 at 13:45 3 this is really a p...
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What's the difference between dynamic (C# 4) and var?

...ic types in C# - only consuming them), so this isn't unrealistic... oh the fun we could have ;-p – Marc Gravell♦ Jun 7 '09 at 19:42 ...
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Access event to call preventdefault from custom function originating from onclick attribute of tag

... ok, I see all I had to do is to put my parameter second myfunc(event, {a:123, b:"asdas"}) – Omu Dec 23 '11 at 10:01 1 ...
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Convert Pandas column containing NaNs to dtype `int`

... @jsc123 you can use the object dtype. This comes with a small health warning but for the most part works well. – Andy Hayden May 19 '15 at 15:16 ...
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How do I update each dependency in package.json to the latest version?

... If you happen to be using Visual Studio Code as your IDE, this is a fun little extension to make updating package.json a one click process. Version Lens share | improve this answer ...
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How do I make background-size work in IE?

... @Gaurav123 try -webkit-background-size: cover; -moz-background-size: cover; -o-background-size: cover; background-size: cover; – honk31 Feb 7 '14 at 13:16 ...