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Is there a function to make a copy of a PHP array to another?
... by reference. This means that:
$a = array();
$b = $a;
$b['foo'] = 42;
var_dump($a);
Will yield:
array(0) {
}
Whereas:
$a = new StdClass();
$b = $a;
$b->foo = 42;
var_dump($a);
Yields:
object(stdClass)#1 (1) {
["foo"]=>
int(42)
}
You could get confused by intricacies such as Ar...
Method Syntax in Objective-C
...t:. If you were to try to invoke pickerView:, you would recieve a runtime error, as the method would not exist.
– locriani
Mar 25 '09 at 21:13
1
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Why is a pure virtual function initialized by 0?
...bolic. (Most compilers assign such vtable entries to a stub which emits an error before aborting the program.) The syntax was mainly chosen because it wasn't used for anything before and it saved introducing a new keyword.
...
What is Normalisation (or Normalization)?
...ecific problem, usually related to redundancy.
Some typical normalization errors:
(1) Having more than one value in a cell. Example:
UserId | Car
---------------------
1 | Toyota
2 | Ford,Cadillac
Here the "Car" column (which is a string) have several values. That offends the first no...
How to implement the Android ActionBar back button?
...
I got the error: Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.app.ActionBar.setDisplayHomeAsUpEnabled(boolean)' on a null object reference
– Jones
Mar ...
Bootstrap 3 jquery event for active tab change
...nd assign that value to the target, I'm not getting any alert. Not even an error message. What should I do, in order to bring it outside that loop? I've declared the variable outside the document.ready function.
– SSS
Nov 2 '16 at 12:31
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SQL Server Escape an Underscore
...IKE keyword and the [ ] wildcard characters.
For your case:
... LIKE '%[_]d'
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How do you overcome the HTML form nesting limitation?
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answered May 13 '10 at 22:05
NishiNishi
9,96533 gold badges2323 silver badges3535 bronze badges
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Revert to a commit by a SHA hash in Git? [duplicate]
... you have no uncommitted changes that you want to keep
git reset --hard 56e05fced
# Move the branch pointer back to the previous HEAD
git reset --soft HEAD@{1}
git commit -m "Revert to 56e05fced"
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How to check if a string starts with a specified string? [duplicate]
...he entire string. There's a tradeoff here; strpos reduces the chance of an error-causing typo, but substr theoretically ought to perform better, and I guess that could conceivably matter if your haystack was some enormous string, like the text of a novel. I always use strpos for the reason you gave,...