大约有 40,000 项符合查询结果（耗时：0.0434秒） [XML]
UITextField - capture return button event
...
Delegation is not required, here's a one-liner:
- (void)viewDidLoad {
[textField addTarget:textField
action:@selector(resignFirstResponder)
forControlEvents:UIControlEventEditingDidEndOnExit];
}
Sadly you can't directly do this in your Storyboard...
Does anyone beside me just NOT get ASP.NET MVC? [closed]
...ller class, there will be methods ("Actions") for Index (show list), Show, New and Edit and Destroy (at least in Rails, MVC is similar). By default, these "Get" Actions just bundle up the Model and route to a corresponding view/html file in the "View/{modelname}" directory (note that there are also...
Understanding FFT output
...t on how you calculate your FFT.
The frequency to fft-bin equation is (bin_id * freq/2) / (N/2) where freq is your sample-frequency (aka 32 Hz, and N is the size of your FFT). In your case this simplifies to 1 Hz per bin. The bins N/2 to N represent negative frequencies (strange concept, I know). Fo...
Read file data without saving it in Flask
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f.read() didn't yield anything for me too. Calling first f.seek(0) did the trick for me.
– w177us
Dec 12 '17 at 20:28
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How do you make a deep copy of an object?
...erialize the object, then deserialize. This ensures everything is a brand new reference.
Here's an article about how to do this efficiently.
Caveats: It's possible for classes to override serialization such that new instances are not created, e.g. for singletons. Also this of course doesn't work...
Adding a new array element to a JSON object
...ct Name3","price":"87","image":"1461449679506.jpeg"}];
var fields = []; //new array
var json = JSON.parse(alreadyData); //just parse in one variable
var json = JSON.parse(tableColumns);
for (var i = 0; i < json.length; i++) {
fields.push(json[i]);//push data in fields
}
fields.push({ 'id':3...
How to update only one field using Entity Framework?
...):
public void ChangePassword(int userId, string password)
{
var user = new User() { Id = userId, Password = password };
using (var db = new MyEfContextName())
{
db.Users.Attach(user);
db.Entry(user).Property(x => x.Password).IsModified = true;
db.SaveChanges();
}
}
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Android: show soft keyboard automatically when focus is on an EditText
...tMode.
final AlertDialog dialog = ...;
editText.setOnFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
if (hasFocus) {
dialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_AL...
Git: Cannot see new remote branch
A colleague pushed a new remote branch to origin/dev/homepage and I cannot see it when I run:
9 Answers
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WPF and initial focus
...ode to my Window's constructor:
Loaded += (sender, e) =>
MoveFocus(new TraversalRequest(FocusNavigationDirection.First));
This will automatically select the first control in the tab order, so it's a general solution that should be able to be dropped into any window and Just Work.
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