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Why is f(i = -1, i = -1) undefined behavior?
I was reading about order of evaluation violations , and they give an example that puzzles me.
11 Answers
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What is the difference between ng-if and ng-show/ng-hide
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ngIf
The ngIf directive removes or recreates a portion of the DOM tree based on an expression. If the expression assigned to ngIf evaluates to a false value then the element is removed from the DOM, otherwise a clone of the element is reinserted into the DOM.
<!-- whe...
Count, size, length…too many choices in Ruby?
...actly the same thing.
count is more versatile - it can take an element or predicate and count only those items that match.
> [1,2,3].count{|x| x > 2 }
=> 1
In the case where you don't provide a parameter to count it has basically the same effect as calling length. There can be a perfo...
What is the difference between packaged_task and async
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Actually the example you just gave shows the differences if you use a rather long function, such as
//! sleeps for one second and returns 1
auto sleep = [](){
std::this_thread::sleep_for(std::chrono::seconds(1));
return 1;
};
Packa...
Importing CommonCrypto in a Swift framework
How do you import CommonCrypto in a Swift framework for iOS?
16 Answers
16
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How does the Windows Command Interpreter (CMD.EXE) parse scripts?
I ran into ss64.com which provides good help regarding how to write batch scripts that the Windows Command Interpreter will run.
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Does Java 8 provide a good way to repeat a value or function?
In many other languages, eg. Haskell, it is easy to repeat a value or function multiple times, eg. to get a list of 8 copies of the value 1:
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Embed git commit hash in a .Net dll
I'm building a C# application, using Git as my version control.
14 Answers
14
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How to get root access on Android emulator?
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These answers are all unnecessarily complicated :)
$ > adb shell
generic_x86:/ $
generic_x86:/ $ exit
$ > adb root
restarting adbd as root
$ > adb shell
generic_x86:/ #
share
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Find location of a removable SD card
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Environment.getExternalStorageState() returns path to internal SD mount point like "/mnt/sdcard"
No, Environment.getExternalStorageDirectory() refers to whatever the device manufacturer considered to be "external storage". On some devices, this is removable media, like ...