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Unique BooleanField value in Django?
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Whenever I've needed to accomplish this task, what I've done is override the save method for the model and have it check if any other model has the flag already set (and turn it off).
class Character(models.Model):
name = models.CharField(max_length=255)
is_the_chosen_one = models.Boo...
Android: I am unable to have ViewPager WRAP_CONTENT
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Overriding onMeasure of your ViewPager as follows will make it get the height of the biggest child it currently has.
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int height = 0;
for(i...
List of special characters for SQL LIKE clause
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DECLARE @p0 VarChar(1000) = '%lkjwer--~_~~~[]%'
-- EndRegion
SELECT [t0].[ID], [t0].[Name]
FROM [RECORDS] AS [t0]
WHERE [t0].[Name] LIKE @p0 ESCAPE '~'
So I haven't tested it yet but it looks like potentially the ESCAPE '~' keyword may allow for automatic escaping of a string for use within a lik...
Unnamed/anonymous namespaces vs. static functions
...when declaring objects in a
namespace scope, the unnamed-namespace
provides a superior alternative.
Static only applies to names of objects, functions, and anonymous unions, not to type declarations.
Edit:
The decision to deprecate this use of the static keyword (affect visibility of a va...
How to use LINQ to select object with minimum or maximum property value
... edited Nov 24 '17 at 10:31
Sheridan
62.9k2121 gold badges123123 silver badges168168 bronze badges
answered May 27 '09 at 5:53
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How to make a transparent HTML button?
... website and I thought of just using Photoshop to create backgrounds. I decided to do so only because in case I'd choose to change the button name easily by just editing the codes, I could just refer to the code. If I would construct buttons using Photoshop, I wouldn't be able to edit the Texts in t...
The 'packages' element is not declared
...makes it go away...
Edit in 2020: if you are viewing this warning, consider upgrading to PackageReference if you can
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Android: How to stretch an image to the screen width while maintaining aspect ratio?
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I accomplished this with a custom view. Set layout_width="fill_parent" and layout_height="wrap_content", and point it to the appropriate drawable:
public class Banner extends View {
private final Drawable logo;
public Banner(Context context) {
super(context);
lo...
Filtering fiddler to only capture requests for a certain domain
...s the thechnical way. I will not be able to open filers dialog when using fiddler programmatically. Edit the file and adding that is the way i've been looking for.
– m3nda
Feb 11 '15 at 12:55
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Perform Segue programmatically and pass parameters to the destination view
...ing, int, or like in this case it's a model that contains many items
- (void)someMethod {
[self performSegueWithIdentifier:@"loginMainSegue" sender:self];
}
OR...
- (void)someMethod {
UIViewController *myController = [self.storyboard instantiateViewControllerWithIdentifier:@"HomeContro...