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How are echo and print different in PHP? [duplicate]
...le parameters to output. E.g.:
echo 'foo', 'bar'; // Concatenates the 2 strings
print('foo', 'bar'); // Fatal error
If you're looking to evaluate the outcome of an output statement (as below) use print. If not, use echo.
$res = print('test');
var_dump($res); //bool(true)
...
How to set up tmux so that it starts up with specified windows opened?
... Can't those session be started inside .tmux.conf without requiring extra files?
– Eno
Mar 22 '12 at 17:11
2
...
Combining “LIKE” and “IN” for SQL Server [duplicate]
...ple if your text was 'Hello World' it would find two matches and create an extra row in the results. The first line should be SELECT DISTINCT t.* to avoid this happening.
– Dave Sexton
Nov 16 '15 at 9:55
...
Select elements by attribute in CSS
...r values with CSS only..
Attributes selectors allows you play around some extra with id and class attributes
Here is an awesome read on Attribute Selectors
Fiddle
a[href="http://aamirshahzad.net"][title="Aamir"] {
color: green;
text-decoration: none;
}
a[id*="google"] {
color: r...
Class with Object as a parameter
... Table to be a new-style class (as opposed to "classic" class).
In Python3 all classes are new-style classes, so this is no longer necessary.
New style classes have a few special attributes that classic classes lack.
class Classic: pass
class NewStyle(object): pass
print(dir(Classic))
# ['__doc__...
Is it possible to make abstract classes in Python?
...nitions of those methods:
>>> Abstract()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: Can't instantiate abstract class Abstract with abstract methods foo
>>> class StillAbstract(Abstract):
... pass
...
>>> StillAbstr...
What does Expression.Quote() do that Expression.Constant() can’t already do?
...t. You're suggesting that in order to be parsimonious about not adding one extra factory method and node type amongst the several dozen already there, that we add a bizarre corner case to constants, so that constants are sometimes logically constants, and sometimes they are rewritten lambdas with cl...
Use of undeclared identifier 'kUTTypeMovie'
...ker.sourceType = .camera
imagePicker.mediaTypes = [kUTTypeMovie as String]
imagePicker.videoMaximumDuration = 10 // or whatever you want
imagePicker.videoQuality = .typeMedium
imagePicker.allowsEditing = false
present(imagePicker, animated: true, completion: n...
How to update a git clone --mirror?
...t remote update' does not in fact maintain the 'mirror' status without the extra operations mentioned there
– sehe
May 27 '11 at 12:26
1
...
Creating a singleton in Python
...mple implementation:
class Singleton(type):
_instances = {}
def __call__(cls, *args, **kwargs):
if cls not in cls._instances:
cls._instances[cls] = super(Singleton, cls).__call__(*args, **kwargs)
return cls._instances[cls]
class Logger(object):
__meta...