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Finalize vs Dispose
...e this as they are used to signal from one thread to another. The question then becomes who should call Dispose on these? As a safeguard types like these implement a Finalize method, which makes sure resources are disposed when the instance is no longer referenced by the application.
...
SQL Server CTE and recursion example
... how value of N is getting incremented. if value is assign to N every time then N value can be incremented but only first time N value was initialize.
A1: In this case, N is not a variable. N is an alias. It is the equivalent of SELECT 1 AS N. It is a syntax of personal preference. There are 2 main...
Use HTML5 to resize an image before upload
...name" value="#{name}" />
... a few more inputs ...
</form>
Then I changed the uploadPhotos function to handle only the resizing:
window.uploadPhotos = function(url){
// Read in file
var file = event.target.files[0];
// Ensure it's an image
if(file.type.match(/image....
How to measure code coverage in Golang?
... source for the package and insert instrumentation statements. The test is then compiled and run as usual, and basic coverage statistics are reported:
$ go test -coverprofile fmtcoverage.html fmt
ok fmt 0.060s coverage: 91.4% of statements
$
Second, for more detailed reports, differe...
What's onCreate(Bundle savedInstanceState)
...hat you may want to save some values for all the fragments of an activity, then u will use the bundle of activity otherwise u should use bundle of fragment if it is for specific fragment.
– Asad
Apr 21 '17 at 11:25
...
How to hide the keyboard when I press return key in a UITextField?
...d
@interface MYLoginViewController () <UITextFieldDelegate>
@end
Then add this method to your code.
- (BOOL)textFieldShouldReturn:(UITextField *)textField {
[textField resignFirstResponder];
return YES;
}
Also add self.textField.delegate = self;
...
How to cancel a Task in await?
...hink the task was cancelled, but in the background the task keeps running, then after it's completed, the status of the Task is always completed and never cancelled. Is there a way to completely halt the task when it's cancelled?
...
Why use the 'ref' keyword when passing an object?
... they handle this possibility.
Also, when the parameter type is an object, then object variables always act as references to the object. This means that when the ref keyword is used you've got a reference to a reference. This allows you to do things as described in the example given above. But, when...
How should I print types like off_t and size_t?
...s to unsigned long or long like another answer recommends. If you use C99, then you can (and should, of course) cast to unsigned long long or long long and use the %llu or %lld formats respectively.
share
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What is an example of the Liskov Substitution Principle?
...ith inheritance. However if in code you made Square derive from Rectangle, then a Square should be usable anywhere you expect a Rectangle. This makes for some strange behavior.
Imagine you had SetWidth and SetHeight methods on your Rectangle base class; this seems perfectly logical. However if you...