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Why is isNaN(null) == false in JS?
...new Number(NaN), and most strings.
Any such input that produces NaN as an output when passed to ToNumber will produce a true when fed to isNaN. Since null can successfully be converted to a number, it does not produce true.
And that is why.
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Is “else if” faster than “switch() case”? [duplicate]
...timise the code the way that you describe, it has to have more knowledge about the value, i.e. knowing if reading the value multiple times has any side effects, as changing the code to a switch will only read the value once.
– Guffa
Aug 2 '10 at 14:55
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MySQL Select minimum/maximum among two (or more) given values
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Just watch out if NULL is likely to be in a field value ...
SELECT LEAST(NULL,NOW());
and
SELECT GREATEST(NULL,NOW());
both return null, which may not be what you want (especially in the case of GREATEST)
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MongoDB and “joins” [duplicate]
...were a single table (you "join two tables into one").
You can read more about DBRef here:
http://docs.mongodb.org/manual/applications/database-references/
There are two possible solutions for resolving references. One is to do it manually, as you have almost described. Just save a document's _id i...
jQuery Datepicker onchange event issue
I have a JS code in which when you change a field it calls a search routine. The problem is that I can't find any jQuery events that will fire when the Datepicker updates the input field.
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Why is document.write considered a “bad practice”?
...e and methods which can keep you from harm, this may be a case of throwing out the baby with the bathwater.
– cgp
Apr 29 '09 at 15:50
7
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Improve subplot size/spacing with many subplots in matplotlib
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Try using plt.tight_layout
As a quick example:
import matplotlib.pyplot as plt
fig, axes = plt.subplots(nrows=4, ncols=4)
fig.tight_layout() # Or equivalently, "plt.tight_layout()"
plt.show()
Without Tight Layout
With Tight Layout
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Django get the static files URL in view
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@gepatino You can route the result through request.build_absolute_uri as described here: stackoverflow.com/questions/2345708/…
– dyve
Nov 11 '14 at 13:44
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How to cancel an $http request in AngularJS?
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This feature was added to the 1.1.5 release via a timeout parameter:
var canceler = $q.defer();
$http.get('/someUrl', {timeout: canceler.promise}).success(successCallback);
// later...
canceler.resolve(); // Aborts the $http request if it isn't finished.
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How to send a custom http status message in node / express?
...t-in express.errorHandler for this)
Then in your middleware, before your routes:
app.use(errorHandler);
Then where you want to create the error 'Current password does not match':
function checkPassword(req, res, next) {
// check password, fails:
var err = new Error('Current password does no...