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Set a persistent environment variable from cmd.exe
...t windows machines, but I don't want to be bothered changing them manually by getting on the properties screen of "My Computer"
...
Implicit “Submit” after hitting Done on the keyboard at the last EditText
.... in onCreate):
// your text box
EditText edit_txt = (EditText) findViewById(R.id.search_edit);
edit_txt.setOnEditorActionListener(new EditText.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
if (actionId == Edito...
How to get the index of an element in an IEnumerable?
...ot of sense for an IEnumerable. If you need something that supports access by index, put it in an actual list or collection.
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Form inline inside a form horizontal in twitter bootstrap?
... imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u00
How do I avoid capturing self in blocks when implementing an API?
...hable without a debugger. Tragic, really.
That case could be easily fixed by doing this instead:
id progressDelegate = self.delegate;
self.progressBlock = ^(CGFloat percentComplete) {
[progressDelegate processingWithProgress:percentComplete];
}
In this code, self is retaining the block, the ...
How to make div background color transparent in CSS
...ackground-color: rgba(255, 0, 0, 0.4);
Or define a background image (1px by 1px) saved with the right alpha.
(To do so, use Gimp, Paint.Net or any other image software that allows you to do that.
Just create a new image, delete the background and put a semi-transparent color in it, then save it in...
Is there a difference between “==” and “is”?
...e if two variables point to the same object, == if the objects referred to by the variables are equal.
>>> a = [1, 2, 3]
>>> b = a
>>> b is a
True
>>> b == a
True
# Make a new copy of list `a` via the slice operator,
# and assign it to variable `b`
>>>...
How to leave a message for a github.com user
...nces, they may have pushed one of his own commits. Ensure this is the case by clicking on the "View comparison..." link and make sure the user is listed as one of the committers.
Clone on your local machine the repository they pushed to: git clone https://github.com/..../repository.git
Checkout the...
How to pass values between Fragments
... setContentView(R.layout.activity_main);
if (findViewById(R.id.container) != null) {
if (savedInstanceState != null) {
return;
}
getFragmentManager().beginTransaction()
.add(R.id.container, new FragmentA())...
How does JPA orphanRemoval=true differ from the ON DELETE CASCADE DML clause
... collection in the Post entity is mapped as follows:
@OneToMany(
mappedBy = "post",
cascade = CascadeType.ALL,
orphanRemoval = true
)
private List<Comment> comments = new ArrayList<>();
CascadeType.ALL
The cascade attribute tells the JPA provider to pass the entity state tr...