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Difference Between Invoke and DynamicInvoke
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When you have a delegate instance, you might know the exact type, or you might just know that it is a Delegate. If you know the exact type, you can use Invoke, which is very fast - everything is already pre-validated. For example:
Func<int,int> twice = x => x * 2;
int i = 3;
int j...
Difference between getContext() , getApplicationContext() , getBaseContext() and “this”
...y active Activity.
Activity.getApplicationContext(): Returns the context for the entire application (the process all the Activities are running inside
of). Use this instead of the current Activity context if you need a
context tied to the lifecycle of the entire application, not just the
current A...
Is there a difference between authentication and authorization?
...narios but I suppose it's not limited to that) and I was wondering whether or not there was a difference.
17 Answers
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Why does a return in `finally` override `try`?
How does a return statement inside a try/catch block work?
10 Answers
10
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Link to reload current page
Is it possible to have a normal link pointing to the current location?
21 Answers
21
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How can I combine two commits into one commit? [duplicate]
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You want to git rebase -i to perform an interactive rebase.
If you're currently on your "commit 1", and the commit you want to merge, "commit 2", is the previous commit, you can run git rebase -i HEAD~2, which will spawn an editor listing all the commits th...
How to resolve “must be an instance of string, string given” prior to PHP 7?
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Prior to PHP 7 type hinting can only be used to force the types of objects and arrays. Scalar types are not type-hintable. In this case an object of the class string is expected, but you're giving it a (scalar) string. The error...
Easiest way to check for an index or a key in an array?
...in Bash manual and the little note
if the colon is omitted, the operator tests only for existence [of parameter]
This answer is actually adapted from the answers for this SO question: How to tell if a string is not defined in a bash shell script?
A wrapper function:
exists(){
if [ "$2"...
Business logic in MVC [closed]
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Business rules go in the model.
Say you were displaying emails for a mailing list. The user clicks the "delete" button next to one of the emails, the controller notifies the model to delete entry N, then notifies the view the model has changed.
Perhaps the admin's email should never be r...
JQuery to load Javascript file dynamically
...nly if the user clicks on a certain button. I am using jQuery as my framework. Is there a built-in method or plugin that will help me do this?
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