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Can someone explain the dollar sign in Javascript?
...riable means nothing special to the interpreter, much like an underscore.
From what I've seen, many people using jQuery (which is what your example code looks like to me) tend to prefix variables that contain a jQuery object with a $ so that they are easily identified and not mixed up with, say, in...
Use PHP to create, edit and delete crontab jobs?
...ou can use them, for example per project. Unit Tests available :-)
Sample from command line:
bin/cronman --enable /var/www/myproject/.cronfile --user www-data
Sample from API:
use php\manager\crontab\CrontabManager;
$crontab = new CrontabManager();
$crontab->enableOrUpdate('/tmp/my/crontab....
Python constructors and __init__
...ed called "Constructors"? What is their purpose and how are they different from methods in a class?
5 Answers
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Multiple simultaneous downloads using Wget?
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@Stephen this is to download very large files much faster from websites by using multiple sockets to the server instead of one. This is not mean for scraping a website.
– gabeio
Feb 4 '15 at 22:10
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How can I check if a command exists in a shell script? [duplicate]
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Check if a program exists from a Bash script specifically advises against using which.
– jww
Oct 16 '17 at 4:06
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Convert timestamp in milliseconds to string formatted time in Java
I am trying to convert a long value ( number of milliseconds elapsed from 1/1/1970 i.e. Epoch ) to time of format h:m:s:ms .
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Java `final` method: what does it promise?
...partial customization.
There are a number of reasons to prevent something from being customizable, including:
Performance -- Some compilers can analyse and optimise the operation, especially the one without side-effects.
Obtain encapsulated data -- look at immutable Objects where their attributes...
How do I invert BooleanToVisibilityConverter?
... In their documentation they say you can use their MapConverter to convert from Visibility enumeration to bool
<Label>
<Label.Visible>
<Binding Path="IsVisible">
<Binding.Converter>
<con:MapConverter>
<con:...
Python list of dictionaries search
... This is the best answer for Python 3.x. If you need a specific element from the dicts, like age, you can write: next((item.get('age') for item in dicts if item["name"] == "Pam"), False)
– cwhisperer
Jan 9 '19 at 7:44
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android: move a view on touch move (ACTION_MOVE)
... Its working fine but Is there any way to restrict the move from outside the screen that means should move only inside screen boundary..
– Daud Arfin
Oct 19 '13 at 4:34
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