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How to add elements to an empty array in PHP?
...array();
$cart[] = 13;
$cart[] = 14;
// etc
//Above is correct. but below one is for further understanding
$cart = array();
for($i=0;$i<=5;$i++){
$cart[] = $i;
}
echo "<pre>";
print_r($cart);
echo "</pre>";
Is the same as:
<?php
$cart = array();
array_push($cart, 13);
ar...
Is it bad practice to make a setter return “this”?
...or which fields you want to set.
Alternatives to this method might be:
One mega constructor (downside: you might pass lots of nulls or default values, and it gets hard to know which value corresponds to what)
Several overloaded constructors (downside: gets unwieldy once you have more than a few)...
Difference between const & const volatile
... Of course, you're absolutely right, multithreading is just one example, but not the only one :).
– mingos
Jan 4 '11 at 15:16
25
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How to prevent form from being submitted?
... can not explain it more than Chris Baker did.
Both are correct, but none of them are "best" per se, and there may be
a reason the developer chose to use both approaches.
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Best way to clear a PHP array's values
Which is more efficient for clearing all values in an array? The first one would require me to use that function each time in the loop of the second example.
...
Django - “no module named django.core.management”
...(at least for that version of python).
It is possible you have more than one version of python installed and django is inside of another version. You can find out all the versions of python if you type python and then press TAB. Here are all the different python's I have.
$python
python ...
How to copy a java.util.List into another java.util.List
...st<SomeBean> that is populated from a Web Service. I want to copy/clone the contents of that list into an empty list of the same type. A Google search for copying a list suggested me to use Collections.copy() method. In all the examples I saw, the destination list was supposed to contain th...
C# Error: Parent does not contain a constructor that takes 0 arguments
...tructor, so the assumption would be that consumers of the class don't need one. Since we really only want one for the sake of any deriving classes, protected is the sensible modifier, since that has the exact semantics of "only accessible to child classes".
– dlev
...
svn cleanup: sqlite: database disk image is malformed
...a temporary folder and copy the .svn folder from the fresh copy to the old one. Then the old copy should work again and you can delete the temporary folder.
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Case insensitive 'in'
...st. (name.upper() for name in USERNAMES) would create only a generator and one needed string at a time - massive memory savings if you're doing this operation a lot. (even more savings, if you simply create a list of lowercase usernames that you reuse for checking every time)
–...