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Can you animate a height change on a UITableViewCell when selected?
... is selected. And it does animate. Just another way to do it.
Create an int to hold a value for the current selected cell index:
int currentSelection;
Then:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
int row = [indexPath row];
select...
ObservableCollection not noticing when Item in it changes (even with INotifyPropertyChanged)
...f the elements in the collection has changed (which is how I think you are interpreting it) or it could mean that one of the elements of the collection has been changed by replacing it with a different instance (this is my interpretation). Not totally convinced though - will have to look into it fur...
Enums and Constants. Which to use when?
...lue, like PI. There isn't a range of PI values, there is just PI.
Other points to consider are:
a: Constants don't necessarily indicate a relationship between the constants, whereas an enumeration indicates that something can be one of the set defined by the enum.
b: A defined enumeration can hel...
Set the maximum character length of a UITextField
...> textField.text.length)
{
return NO;
}
NSUInteger newLength = [textField.text length] + [string length] - range.length;
return newLength <= 25;
}
Swift
func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string:...
Advantages to Using Private Static Methods
When creating a class that has internal private methods, usually to reduce code duplication, that don't require the use of any instance fields, are there performance or memory advantages to declaring the method as static?
...
If vs. Switch Speed
...
They also convert to tree comparisons in some cases. The reasoning is somewhat complex but basically boils down to the table indirection neutering modern cpu jump target buffers and so wipes out the branch predictor. I vaguely recall...
Volatile Vs Atomic [duplicate]
...write to i between the read and the write.
The Atomic classes, like AtomicInteger and AtomicReference, provide a wider variety of operations atomically, specifically including increment for AtomicInteger.
share
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Algorithm to return all combinations of k elements from n
...gray codes:
Some Hamilton Paths and a Minimal Change Algorithm
Adjacent Interchange Combination Generation Algorithm
Here are some other papers covering the topic:
An Efficient Implementation of the Eades, Hickey, Read Adjacent Interchange Combination Generation Algorithm (PDF, with code in P...
Android webview slow
...rity.HIGH);
Enable/disable hardware acceleration:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
// chromium, enable hardware acceleration
webView.setLayerType(View.LAYER_TYPE_HARDWARE, null);
} else {
// older android version, disable hardware acceleration
webView....
NTFS performance and large volumes of files and directories
...hild's file data. Note: I am simplifying this somewhat but this gets the point across.
The index file will get fragmented. When it gets too fragmented, you will be unable to add files to that folder. This is because there is a limit on the # of fragments that's allowed. It's by design. I've confirme...