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Need a simple explanation of the inject method
...
inject takes a value to start with (the 0 in your example), and a block, and it runs that block once for each element of the list.
On the first iteration, it passes in the value you provided as the starting value, and the first element of the lis...
Regex: Specify “space or start of string” and “space or end of string”
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(^|\s) would match space or start of string and ($|\s) for space or end of string. Together it's:
(^|\s)stackoverflow($|\s)
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Git blame — prior commits?
... -- src/options.cpp
You can specify a revision for git blame to look back starting from (instead of the default of HEAD); fe25b6d^ is the parent of fe25b6d.
Edit: New to Git 2.23, we have the --ignore-rev option added to git blame:
git blame --ignore-rev fe25b6d
While this doesn't answer OP's que...
How to prevent the activity from loading twice on pressing the button
...bled(false);
Intent i = new Intent(this, AnotherActitivty.class);
startActivity(i);
Override onResume() to re-enable the button.
@Override
protected void onResume() {
super.onResume();
Button button1 = (Button) findViewById(R.id.button1);
button1.setEnabled(t...
Measuring code execution time
...se to
accurately measure elapsed time.
Stopwatch stopwatch = Stopwatch.StartNew(); //creates and start the instance of Stopwatch
//your sample code
System.Threading.Thread.Sleep(500);
stopwatch.Stop();
Console.WriteLine(stopwatch.ElapsedMilliseconds);
...
How can I use threading in Python?
...= threading.Thread(target=get_url, args = (q,u))
t.daemon = True
t.start()
s = q.get()
print s
This is a case where threading is used as a simple optimization: each subthread is waiting for a URL to resolve and respond, to put its contents on the queue; each thread is a daemon (won't keep ...
How to make a smooth image rotation in Android?
...tor());
ImageView image= (ImageView) findViewById(R.id.imageView);
image.startAnimation(rotate);
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Are PHP include paths relative to the file or the calling code?
...o share what I learned:
getcwd() returns the directory where the file you started executing resides.
dirname(__FILE__) returns the directory of the file containing the currently executing code.
Using these two functions, you can always build an include path relative to what you need.
e.g., if b....
simple explanation PHP OOP vs Procedural?
...pic or piece of functionality. That's all you need to know in order to get started.
A Class is useful because it allows you to organize your code at a very high level in a way that makes it easy for you to understand, use, and maintain.
When someone has written a lot of functions, and organized the...
Android emulator failed to allocate memory 8
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Update: Starting with Android SDK Manager version 21, the solution is to edit C:\Users\<user>\.android\avd\<avd-profile-name>.avd\config.ini and change the value
hw.ramSize=1024
to
hw.ramSize=1024MB
The emulato...