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Underscore: sortBy() based on multiple attributes
... the array multiple times (which, on a large enough list could slow things down a lot) or they generate huge amounts of garbage objects that the VM will need to cleanup (and ultimately slowing the program down).
Here's a solution that is fast, efficient, easily allows reverse sorting, and can be u...
Why do we check up to the square root of a prime number to determine if it is prime?
... 10, the other is less than 10.
Thinking about a x b, if one of them goes down, the other must get bigger to compensate, so the product stays at 100. They pivot around the square root.
The square root of 101 is about 10.049875621. So if you're testing the number 101 for primality, you only need to...
How to properly ignore exceptions
...ymond Hettinger, talking about this and all sorts of other Python hotness: https://youtu.be/OSGv2VnC0go?t=43m23s
My addition to this is the Python 2.7 equivalent:
from contextlib import contextmanager
@contextmanager
def ignored(*exceptions):
try:
yield
except exceptions:
...
PHP: How to check if image file exists?
...
@getimagesize will dramatically slow down page load. Not recommended. is_file can be used instead and make sure that $src is not full url: "http://..." but "img/..."
– Bogdan C
Nov 21 '17 at 15:17
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Java concurrency: Countdown latch vs Cyclic barrier
...n be used again.
For simple use cases - services starting etc... a CountdownLatch is fine. A CyclicBarrier is useful for more complex co-ordination tasks. An example of such a thing would be parallel computation - where multiple subtasks are involved in the computation - kind of like MapReduce....
How to detect if a function is called as constructor?
...nswered Dec 10 '09 at 12:38
Tim DownTim Down
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Prevent any form of page refresh using jQuery/Javascript
...reventDefault(); };
$(document).ready(function(){
$(document).on("keydown", disableF5);
});
</script>
Hope this will help!
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How do I build a graphical user interface in C++? [closed]
...platform, but a different implementation for those API functions that call down to the native OS API calls.
One thing they'll all have in common, which will be different from a CLI program, is something called an event loop. The basic idea there is somewhat complicated, and difficult to compress, b...
increment date by one month
... me understand it all. In case that helps anyone, I have posted it further down (tried to add it here but it was too long).
– Greg
Nov 13 '16 at 20:11
...
How to dismiss a Twitter Bootstrap popover by clicking outside?
...o $(document) instead of $('body') since sometimes the body doesn't extend down the entire page.
– jasop
Jul 5 '13 at 15:10
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