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What does ':' (colon) do in JavaScript?
...tting that the colon is also used in the ternary operator (though I don't know if jquery uses it for this purpose).
the ternary operator is an expression form (expressions return a value) of an if/then statement. it's used like this:
var result = (condition) ? (value1) : (value2) ;
A ternary ope...
How do I allow HTTPS for Apache on localhost?
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(Screenshots courtesy of Neil Obremski and his helpful article - although now quite out-of-date.)
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Removing empty lines in Notepad++
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There is now a built-in way to do this as of version 6.5.2
Edit -> Line Operations -> Remove Empty Lines or Remove Empty Lines (Containing Blank characters)
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What's wrong with cplusplus.com?
... Its because std::remove works with a pair of iterators only and does not know anything about the container which actually contains the items. In fact, it's not possible for std::remove to know the underlying container, because there is no way it can go from a pair of iterators to discover about the...
Cleanest way to toggle a boolean variable in Java?
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That's...really obvious—oops! Don't know why I didn't think of it. Thanks.
– Kevin Griffin
Oct 22 '08 at 2:46
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Receive JSON POST with PHP
...d work in my case. I was assigning the $_POST data to a $request variable, now I just assigned to that variable the content of php://input.
– Funder
Aug 7 '19 at 12:55
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python pandas: apply a function with arguments to a series
...andas do allow you to pass extra arguments (see the new documentation). So now you can do:
my_series.apply(your_function, args=(2,3,4), extra_kw=1)
The positional arguments are added after the element of the series.
For older version of pandas:
The documentation explains this clearly. The app...
What is the JavaScript version of sleep()?
...ion was asked, JavaScript has evolved significantly. All other answers are now obsolete or overly complicated. Here is the current best practice:
function sleep(ms) {
return new Promise(resolve => setTimeout(resolve, ms));
}
async function demo() {
console.log('Taking a break...');...
How do I get the object if it exists, or None if it does not exist?
...u can do it this way:
go = Content.objects.filter(name="baby").first()
Now go variable could be either the object you want or None
Ref: https://docs.djangoproject.com/en/1.8/ref/models/querysets/#django.db.models.query.QuerySet.first
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Are custom elements valid HTML5?
...mitted in HTML5. This confirms Alochi's circular argument observation. 2) Nowhere does the spec say that custom elements are not permitted.
– d13
Mar 24 '12 at 9:59
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