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How to check if a line is blank using regex
... Java) as follows:
if (line.matches("\\s*")) {
// line is "blank"
}
API references
String String.trim()
Returns a copy of the string, with leading and trailing whitespace omitted.
boolean String.isEmpty()
Returns true if, and only if, length() is 0.
boolean String.matches(String rege...
How do I handle ImeOptions' done button click?
...
This doesn't work any more on applications targeting API level 17+, because your OnKeyListener is no longer fired for soft-key events: developer.android.com/reference/android/text/method/…
– jjb
Dec 13 '13 at 18:14
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If I have ACCESS_FINE_LOCATION already, can I omit ACCESS_COARSE_LOCATION?
...o request one permission. developers.google.com/maps/documentation/android-api/location
– Klox
Feb 4 '17 at 18:05
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Input and Output binary streams using JERSEY?
I'm using Jersey to implement a RESTful API that is primarily retrieve and serve JSON encoded data. But I have some situations where I need to accomplish the following:
...
How can we programmatically detect which iOS version is device running on? [duplicate]
... 8.0.0 and below logic
}
Beware that this will crash on iOS 7, as the API didn't exist prior to iOS 8. If you're supporting iOS 7 and below, you can safely perform the check with
if ([NSProcessInfo instancesRespondToSelector:@selector(isOperatingSystemAtLeastVersion:)]) {
// conditionally ch...
C# using streams
...Stream etc.
The advantage of the stream wrapper is that you get a unified api to interact with streams of any underlying type usb, file etc.
Why would you treat data as stream - because data chunks are loaded on-demand, we can inspect/process the data as chunks rather than loading the entire data ...
converting drawable resource image into bitmap
....logo);
Bitmap myLogo = ((BitmapDrawable) myDrawable).getBitmap();
Since API 22 getResources().getDrawable() is deprecated, so we can use following solution.
Drawable vectorDrawable = VectorDrawableCompat.create(getResources(), R.drawable.logo, getContext().getTheme());
Bitmap myLogo = ((BitmapD...
Should you ever use protected member variables?
...control over the code that uses them as well. If you are creating a public API, I'd say never. Below, we'll refer to the member variable as a "property" of the object.
Here's what your superclass cannot do after making a member variable protected rather than private-with-accessors:
lazily create ...
Get JSON object from URL
... Get the string from the URL
$json = file_get_contents('https://maps.googleapis.com/maps/api/geocode/json?latlng=40.714224,-73.961452');
// Decode the JSON string into an object
$obj = json_decode($json);
// In the case of this input, do key and array lookups to get the values
var_dump($obj->re...
Combating AngularJS executing controller twice
... good explanation of this in the docs for ngController, docs.angularjs.org/api/ng/directive/ngController
– Charles
Feb 28 '14 at 4:46
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