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Switch statement fall-through…should it be allowed? [closed]
... case 4:
case 6:
case 8:
result = EVEN_DIGIT;
break;
}
But if you have a case label followed by code that falls through to another case label, I'd pretty much always consider that evil. Perhaps moving the common code to a function and calling from both places would be a better idea....
How to get the selected index of a RadioGroup in Android
...Id(radioButtonID);
int idx = radioButtonGroup.indexOfChild(radioButton);
If the RadioGroup contains other Views (like a TextView) then the indexOfChild() method will return wrong index.
To get the selected RadioButton text on the RadioGroup:
RadioButton r = (RadioButton) radioButtonGroup.getChi...
How to tell if rails is in production?
...ails in production mode. It did and I got no errors. However how do I tell if it is in production mode? I tried a non-existent route, and I got a similar error page I did in development.
...
Get file size, image width and height before upload
... document.getElementById('preview');
const readImage = file => {
if ( !(/^image\/(png|jpe?g|gif)$/).test(file.type) )
return EL_preview.insertAdjacentHTML('beforeend', `Unsupported format ${file.type}: ${file.name}<br>`);
const img = new Image();
img.addEventListener('lo...
How to create Drawable from resource
...
If you happen to want this outside of an Activity class, you'll have to find some other way to reach the Context where getResources() lives; this answer recommends passing it into the constructor
– rymo
...
Best way to parseDouble with comma as decimal separator?
...
This only works if the current default locale happens to use a comma as a decimal separator.
– Joonas Pulakka
Dec 1 '10 at 11:05
...
What's the difference between MyISAM and InnoDB? [duplicate]
...s been asked before, but most of the time it is asked in relation to a specific database or table. I cannot find an answer on this site that describes the two engines and their differences without respect to someones specific database.
...
How is mime type of an uploaded file determined by browser?
... we first check a hard-coded list (that cannot be
// overridden), and then if not found there, we defer to the system registry.
// Finally, we scan a secondary hard-coded list to catch types that we can
// deduce but that we also want to allow the OS to override.
The hard-coded lists come a bit ear...
How do I map lists of nested objects with Dapper
...our courses populating with the locations.
Caveat the in trick will work if you have less than 2100 lookups (Sql Server), if you have more you probably want to amend the query to select * from CourseLocations where CourseId in (select Id from Courses ... ) if that is the case you may as well yank ...
Deep copying an NSArray
...
As the Apple documentation about deep copies explicitly states:
If you only need a one-level-deep copy:
NSMutableArray *newArray = [[NSMutableArray alloc]
initWithArray:oldArray copyItems:YES];
The above code creates a new array whose members are shallow co...