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How to leave/exit/deactivate a Python virtualenv
...
$ deactivate
which puts things back to normal.
I have just looked specifically again at the code for virtualenvwrapper, and, yes, it too supports deactivate as the way to escape from all virtualenvs.
If you are trying to leave an Anaconda environment, the command depends upon your version of c...
What does the “===” operator do in Ruby? [duplicate]
...=== b
means whatever the author of a's class wants it to mean.
However, if you don't want to confuse the heck out of your colleagues, the convention is that === is the case subsumption operator. Basically, it's a boolean operator which asks the question "If I have a drawer labelled a would it mak...
R: += (plus equals) and ++ (plus plus) equivalent from c++/c#/java, etc.?
...oncept of increment operator (as for example ++ in C). However, it is not difficult to implement one yourself, for example:
inc <- function(x)
{
eval.parent(substitute(x <- x + 1))
}
In that case you would call
x <- 10
inc(x)
However, it introduces function call overhead, so it's slo...
Inserting HTML elements with JavaScript
...all modern browsers. For IE 5.5 and below you could perform a check like:: if (document.createDocumentFragment) { create('...'); } else { /* Use innerHTML perhaps */ }
– James
May 2 '09 at 14:41
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c++ boost::multi_index composite keys efficiency - c++1y / stl - 清泛IT社区，为创新赋能！
...cal order, i.e. sorting is performed by the first key, then the second key if the first one is equal, etc". Does this mean that the structure is stored such that a lookup for a specific 2-part composite key will take O(n=1) time, i.e. is the container sorted such that there is a pointer directl...
jQuery Event Keypress: Which key was pressed?
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Actually this is better:
var code = e.keyCode || e.which;
if(code == 13) { //Enter keycode
//Do something
}
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Play/pause HTML 5 video using JQuery
...of how to do this with the native DOM functions. The jQuery equivalent -- if you wanted to do this to fit in with an existing jQuery selection -- would be $('#videoId').get(0).play(). (get gets the native DOM element from the jQuery selection.)
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Script to kill all connections to a database (More than RESTRICTED_USER ROLLBACK)
... I agree with Mark. This method should be the accepted answer as it is significantly more elegant and less impacting for the databases.
– Austin S.
Nov 21 '14 at 1:11
3
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What's the difference between emulation and simulation? [duplicate]
In simple understandable terms, what is the difference between the two terms?
10 Answers
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How do you redirect to a page using the POST verb?
...our answer is suggesting.
I would love to know what is "wrong" with this, if there is anything. Obviously, if you want to really have sent to the browser a redirect, this isn't going to work, but then you should ask why you would be trying to convert that regardless, since it seems odd to me.
Hope...