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Check if an image is loaded (no errors) with jQuery
...that
// weren’t downloaded as not complete. Others should too. Gecko-based
// browsers act like NS4 in that they report this incorrectly.
if (!img.complete) {
return false;
}
// However, they do have two very useful properties: naturalWidth and
// naturalHeight. Th...
What is the difference between HTTP_HOST and SERVER_NAME in PHP?
...'t work as well. A badly configured server will set$_SERVER['SERVER_NAME'] based on the value of the client's Host: request. Both are equal.
– Pacerier
Mar 5 '15 at 23:17
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Django Rest Framework: Dynamically return subset of fields
... I would like to add a fields query parameter to a Django Rest Framework based API which enables the user to select only a subset of fields per resource.
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How do I replace a character at a particular index in JavaScript?
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Note that it's generally not a good idea to extend base JavaScript classes. Use a plain utility function instead.
– Ates Goral
Sep 16 '09 at 5:40
87
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What is the difference between String.slice and String.substring?
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substr: It's providing us to fetch part of the string based on specified index.
syntax of substr-
string.substr(start,end)
start - start index tells where the fetching start.
end - end index tells upto where string fetches. It's optional.
slice: It's providing to fetch...
Why are Python's 'private' methods not actually private?
...ff the lawn. It is just another pattern that should be used to make a code base easier to understand.
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How to smooth a curve in the right way?
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A quick and dirty way to smooth data I use, based on a moving average box (by convolution):
x = np.linspace(0,2*np.pi,100)
y = np.sin(x) + np.random.random(100) * 0.8
def smooth(y, box_pts):
box = np.ones(box_pts)/box_pts
y_smooth = np.convolve(y, box, mode='...
Difference between scaling horizontally and vertically for databases [closed]
I have come across many NoSQL databases and SQL databases. There are varying parameters to measure the strength and weaknesses of these databases and scalability is one of them. What is the difference between horizontally and vertically scaling these databases?
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Insert Update trigger how to determine if insert or update
...s, the common DELETED table will contain a record for these two actions. Based upon that information, I then created a small Action routine which determines why the trigger has been activated. This type of interface is sometimes needed when there is both a common configuration and a specific acti...
Cleanest way to write retry logic?
... a general exception handling mechanism. Having said that, here's a lambda-based retry wrapper that you can use with any method. I chose to factor the number of retries and the retry timeout out as parameters for a bit more flexibility:
public static class Retry
{
public static void Do(
...