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How to drive C#, C++ or Java compiler to compute 1+2+3+…+1000 at compile time?
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Updated Now with improved recursion depth! Works on MSVC10 and GCC without increased depth. :)
Simple compile-time recursion + addition:
template<unsigned Cur, unsigned Goal>
struct adder{
static unsigned const sub_goal =...
How do I get the information from a meta tag with JavaScript?
...mentsByTagName('meta');
for (let i = 0; i < metas.length; i++) {
if (metas[i].getAttribute('name') === metaName) {
return metas[i].getAttribute('content');
}
}
return '';
}
console.log(getMeta('video'));
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How to avoid “Permission denied” when using pip with virtualenv
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if I want to create it in /opt which requires sudo, I think virtualenv won't install without sudo.
– Umair A.
Dec 12 '13 at 13:10
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Regex, every non-alphanumeric character except white space or colon
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Aha! I shall modify -- I didn't know that. I expect it works differently for different engines, but might as well give the OP the safe answer.
– Luke Sneeringer
May 19 '11 at 4:51
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Why is the asterisk before the variable name, rather than after the type?
...* c * d
* e * f * g;
Here *e would be misleading, wouldn't it?
Okay, now what does the following line actually mean:
int *a;
Most people would say:
It means that a is a pointer to an int value.
This is technically correct, most people like to see/read it that way and that is the way how m...
How to override Backbone.sync?
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I know this answer is a bit too late, and the answer from @Raynos is great, but I did it a bit differently, and maybe it would be useful for you or for any other person trying to use an API with Backbone.
Instead of overriding ...
Does order of where clauses matter in SQL?
...le index for this!
In the case of SQL Server, it will likely use an index if you have:
an index on (LastName, FirstName)
an index on (FirstName, LastName)
an index on just (LastName), or just (FirstName) (or both)
On the other hand - again for SQL Server - if you use SELECT * to grab all column...
is it possible to update UIButton title/text programmatically?
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Do you have the button specified as an IBOutlet in your view controller class, and is it connected properly as an outlet in Interface Builder (ctrl drag from new referencing outlet to file owner and select your UIButton object)? That's usually the pro...
Convert seconds to Hour:Minute:Second
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H represents the amount of hours in a single day. So if you have 90000 seconds and you'll use H on it the result will be 01 (first hour of a next day). NOT 25 - there are only 24 hours in a day.
– MarcinWolny
Jun 20 '13 at 10:35
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Converting JavaScript object with numeric keys into array
...his is an answer, but not a very friendly one.
– sheriffderek
Sep 20 '15 at 19:39
2
The question ...