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C/C++ Struct vs Class
...fault to public in structs—a struct written like a C struct behaves like one.)
While it's possible to fake some OOP in C—for instance, defining functions which all take a pointer to a struct as their first parameter, or occasionally coercing structs with the same first few fields to be "sub/sup...
round() for float in C++
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There's no round() in the C++98 standard library. You can write one yourself though. The following is an implementation of round-half-up:
double round(double d)
{
return floor(d + 0.5);
}
The probable reason there is no round function in the C++98 standard library is that it can in f...
Creating a URL in the controller .NET MVC
... UrlHelper; there is a .Url property on the controller which will give you one with the correct RequestContext.
– Tobias J
Nov 14 '13 at 15:34
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Django filter queryset __in for *every* item in list
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Summary:
One option is, as suggested by jpic and sgallen in the comments, to add .filter() for each category. Each additional filter adds more joins, which should not be a problem for small set of categories.
There is the aggregation...
How to use the PI constant in C++
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One can avoid the multiplication operation with atan2(0, -1);.
– legends2k
May 29 '13 at 21:18
45
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How do I clone into a non-empty directory?
...n PATH/TO/REPO
git fetch
git reset origin/master # Required when the versioned files existed in path before "git init" of this repo.
git checkout -t origin/master
NOTE: -t will set the upstream branch for you, if that is what you want, and it usually is.
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python-pandas and databases like mysql
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@Korem I did thought about opening a new one, but I wanted to make sure it is not a trivial one first. When I use an mySql client (Sequel pro) and query the database, reuslts come up much faster. When you say "simply sending and then retrieving", is that what you me...
Submitting a form by pressing enter without a submit button
... you feel that this hack is horrible, feel free to suggest a less horrible one. HTML is what it is...
– Ates Goral
Apr 10 '11 at 21:07
13
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git pull fails “unable to resolve reference” “unable to update local ref”
...u know why this error came? (everything was working fine and then suddenly one day this error popped). And also do you know how deleting the file solved it?
– Shreyans
Apr 2 '16 at 11:06
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Common elements in two lists
...id that changes are being affected in listA, then you need to create a new one.
List<Integer> common = new ArrayList<Integer>(listA);
common.retainAll(listB);
// common now contains only the elements which are contained in listA and listB.
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