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Generator Expressions vs. List Comprehension
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print gen()[:2] # generators don't support indexing or slicing
print [5,6] + gen() # generators can't be added to lists
Basically, use a generator expression if all you're doing is iterating once. If you want to store and use the generated results, then you're probably better off with a list...
How do I update/upsert a document in Mongoose?
...newData, {upsert: true}, function(err, doc) {
if (err) return res.send(500, {error: err});
return res.send('Succesfully saved.');
});
In older versions Mongoose does not support these hooks with this method:
defaults
setters
validators
middleware
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Select2 dropdown but allow new values by user?
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For version 4+ check this answer below by Kevin Brown
In Select2 3.5.2 and below, you can use something like:
$(selector).select2({
minimumInputLength:1,
"ajax": {
data:function (term, page) {
return { term:term, page:page };
},
dataType:"json",
quietMillis:100,
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How to get current location in Android [duplicate]
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edited Jul 11 '13 at 10:54
answered Jul 11 '13 at 10:47
A...
How to convert an ArrayList containing Integers to primitive int array?
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225
You can convert, but I don't think there's anything built in to do it automatically:
public sta...
Show constraints on tables command
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answered Oct 23 '10 at 15:24
Adrian SmithAdrian Smith
15.3k99 gold badges5757 silver badges8989 bronze badges
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How to clear the cache of nginx?
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It is related to this bug: https://www.virtualbox.org/ticket/12597
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adding multiple entries to a HashMap at once in one statement
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edited Aug 20 at 3:53
Debargha Roy
50633 silver badges1616 bronze badges
answered Nov 24 '11 at 1...
Visual Studio 2013 IntelliSense stops working for ASP.NET MVC5 Controllers
I am facing a weird problem in my Visual Studio 2013 ASP.NET MVC 5 project. All of a sudden, the IntelliSense in the Controller classes of the MVC 5 project are not working at all.
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VS 2012: Scroll Solution Explorer to current file
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edited Jan 30 '18 at 11:15
Ajay2707
5,05544 gold badges2929 silver badges4848 bronze badges
answered Oc...