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Is there a “not in” operator in JavaScript for checking object properties?
...
As already said by Jordão, just negate it:
if (!(id in tutorTimes)) { ... }
Note: The above test if tutorTimes has a property with the name specified in id, anywhere in the prototype chain. For example "valueOf" in tutorTimes ...
jQuery attr vs prop?
...d="return">
</pre>
and the JS below using jQuery :
$(document).ready(function(){
$("#return").append("$('form').prop('action') : " + $('form').prop('action') + '\r\n');
$("#return").append("$('form').attr('action') : " + $('form').attr('action') + '\r\n');
$("#return").append...
C++ Double Address Operator? (&&)
I'm reading STL source code and I have no idea what && address operator is supposed to do. Here is a code example from stl_vector.h :
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What is the minimum valid JSON?
I've carefully read the JSON description http://json.org/ but I'm not sure I know the answer to the simple question. What strings are the minimum possible valid JSON?
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Pimpl idiom vs Pure virtual class interface
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I was searching an answer for the same question.
After reading some articles and some practice I prefer using "Pure virtual class interfaces".
They are more straight forward (this is a subjective opinion). Pimpl idiom makes me feel I'm writing code "for the compiler", not for t...
How do I use CSS in Django?
...rve a static file from Django. If you are running under Apache, you should read http://docs.djangoproject.com/en/dev/howto/deployment/modpython/
If you are running the development server (say, on your laptop), read http://docs.djangoproject.com/en/dev/howto/static-files/
Do note the big, fat discl...
Has anyone used Coffeescript for a production application? [closed]
..., we can turn back at anytime. Our coffeescript compiler is just producing readable javascript, so if anyone changes their mind or can't figure something out, then we can just drop back to using the javascript that coffeescript produced - and keep coding.
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Limit text length to n lines using CSS
...tion:absolute in the bottom right for those who want to click the link and read more. In my case I knew the text would always overflow, so jQuery was not necessary. Thanks for the useful CSS solution!
– Mentalist
Oct 23 '18 at 0:23
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Need to handle uncaught exception and send log file
...c void onCreate ()
{
// Setup handler for uncaught exceptions.
Thread.setDefaultUncaughtExceptionHandler (new Thread.UncaughtExceptionHandler()
{
@Override
public void uncaughtException (Thread thread, Throwable e)
{
handleUncaughtException (thread, e);
...
++someVariable vs. someVariable++ in JavaScript
...e are slight performance benefits to using ++x where possible, because you read the variable, modify it, then evaluate and store it. Versus the x++ operator where you read the value, evaluate it, modify it, then store it.
sh...