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How to make “if not true condition”?
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I think it can be simplified into:
grep sysa /etc/passwd || {
echo "ERROR - The user sysa could not be looked up"
exit 2
}
or in a single command line
$ grep sysa /etc/passwd || { echo "ERROR - The user sysa could not be looked up"; exit 2; }
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How can I wait In Node.js (JavaScript)? l need to pause for a period of time
... console.log('Welcome to My Console,');
}
function function2() {
// all the stuff you want to happen after that pause
console.log('Blah blah blah blah extra-blah');
}
// call the first chunk of code right away
function1();
// call the rest of the code and have it execute after 3 seconds...
Python function global variables?
...hem, is the following a valid way to go about using them? (I am trying to call the global copy of a variable created in a separate function.)
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Does SQLAlchemy have an equivalent of Django's get_or_create?
... Look at Django's implementation of get_or_create. It checks for integrity error, and relies upon proper use of unique constraints.
– Ivan Virabyan
May 21 '12 at 6:17
1
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Vertical (rotated) label in Android
...d simple vertical text implementation, extending TextView. This means that all standard styles of TextView may be used, because it is extended TextView.
public class VerticalTextView extends TextView{
final boolean topDown;
public VerticalTextView(Context context, AttributeSet attrs){
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When I catch an exception, how do I get the type, file, and line number?
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import sys, os
try:
raise NotImplementedError("No error")
except Exception as e:
exc_type, exc_obj, exc_tb = sys.exc_info()
fname = os.path.split(exc_tb.tb_frame.f_code.co_filename)[1]
print(exc_type, fname, exc_tb.tb_lineno)
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Reloading the page gives wrong GET request with AngularJS HTML5 mode
...t still it doesnt work. Refreshing the URL still gives the "404 NOT FOUND" error.
– kTn
Jul 5 '16 at 6:14
How do I red...
Why would I use a templating engine? jsp include and jstl vs tiles, freemarker, velocity, sitemesh
...g the save-in-editor, reload-in-browser cycle back, along with much better error messages.
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Visual Studio Expand/Collapse keyboard shortcuts [duplicate]
...t's CTRL + M + O - letter O, not number 0. The cleanup-edit introduced the error into the answer.
– goodeye
Jul 4 '16 at 1:52
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Remove All Event Listeners of Specific Type
I want to remove all event listeners of a specific type that were added using addEventListener() . All the resources I'm seeing are saying you need to do this:
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