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Purpose of Unions in C and C++
... @legends2k: any decent optimizer will recognize bitwise operations that select an entire byte and generate code to read/write the byte, same as the union but well-defined (and portable). e.g. uint8_t getRed() const { return colour & 0x000000FF; } void setRed(uint8_t r) { colour = (colour &...
What's the best manner of implementing a social activity stream? [closed]
...
Smallish in this case is such that "select * from events where event.is visible for this user" returns a result in less than a second or two- figure a few hundred thousand rows worth of events.
– Tim Howland
May 26 '09 at ...
Force “git push” to overwrite remote files
...
Since this is the selected answer, I will comment here. Using force isn't a problem when working by yourself. For example, my cloud host starts with it's own git. If I work locally and build a project, and I want to put it on my cloud host (Op...
Bootstrap 3 modal vertical position center
...ft:0;
right:0;
}
Here is a fiddle.
http://codepen.io/anon/pen/Hiskj
..selecting this as the correct answer since there's no extra heavy javascript that brings the browser to its knees in case of more than one modals.
sh...
For i = 0, why is (i += i++) equal to 0?
... x is evaluated to produce the variable.
The value of x is saved.
The selected operator is invoked with the saved value of x as its argument.
The value returned by the operator is stored in the location given by the evaluation of x.
The saved value of x becomes the result of the operation.
...
How would I run an async Task method synchronously?
...ng a Task<Task<MyResult>>. The correct overload of Task.Run is selected either way, but the async delegate makes your intent obvious.
– Michael L Perry
Nested attributes unpermitted parameters
...4, I was able to get it working by structuring my fields_for as:
<%= f.select :tag_ids, Tag.all.collect {|t| [t.name, t.id]}, {}, :multiple => true %>
Then in my controller I have my strong params as:
private
def post_params
params.require(:post).permit(:id, :title, :content, :publi...
Combining two expressions (Expression)
... .ReplacePar("parAdrZ", ExprAdres("Z").Body);
return UBEZPIECZONY.Select((Expression<Func<UBEZPIECZONY, UbezpExt>>)expr2);
}
}
And this is the subexpression building code:
public static Expression<Func<UBEZPIECZONY, UBEZP_ADRES>> ExprAdres(string sTyp)
{
r...
Getting URL hash location, and using it in jQuery
... the # symbol at the beginning.
Actually you don't need the :first pseudo-selector since you are using the ID selector, is assumed that IDs are unique within the DOM.
In case you want to get the hash from an URL string, you can use the String.substring method:
var url = "http://example.com/file.h...
Determining 32 vs 64 bit in C++
...lt;sizeof(size_t)>(); }
int main()
{
// appropriate function will be selected at compile time
DoMyOperation();
return 0;
}
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