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What does value & 0xff do in Java?
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What does the x mean in that notation? x isn't a number or a hex number?
– Callat
Dec 5 '16 at 18:56
3
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When do items in HTML5 local storage expire?
For how long is data stored in localStorage (as part of DOM Storage in HTML5) available? Can I set an expiration time for the data which I put into local storage?
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How to join (merge) data frames (inner, outer, left, right)
...or a whole host of complex queries against dataframes, really needed it to do a self-cross join (ie data.frame cross-joining itself) I wonder how it compares from a performance perspective....???
– Nicholas Hamilton
Feb 12 '13 at 4:42
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ng-repeat finish event
... if all you want is to style/add events to the whole of the table, you can do so using in a directive that encompasses all the ngRepeat elements. On the other hand, if you want to address each element specifically, you can use a directive within the ngRepeat, and it will act on each element, after i...
Why can templates only be implemented in the header file?
... For example:
template<typename T>
struct Foo
{
T bar;
void doSomething(T param) {/* do stuff using T */}
};
// somewhere in a .cpp
Foo<int> f;
When reading this line, the compiler will create a new class (let's call it FooInt), which is equivalent to the following:
struct ...
append multiple values for one key in a dictionary [duplicate]
...python and I have a list of years and values for each year. What I want to do is check if the year already exists in a dictionary and if it does, append the value to that list of values for the specific key.
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How do you reference a capture group with regex find and replace in Visual Studio 2012, 2013, 2015,
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To find and replace in VS 2012 and VS 2015 you do the following:
Surround with (), display capture with $1, $2, $n
Example (thanks to syonip)
In the find options, make sure 'use regular expressions' is checked, and put the following as the text to find:
_platformAct...
Unstaged changes left after git reset --hard
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This works, but I do not exactly understand why. Anyone care to explain each command?
– Edwin Stoteler
Mar 20 '15 at 14:04
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How to manage REST API versioning with spring?
...ntain. I'll explain first the problem I have, and then a solution... but I do wonder if I'm re-inventing the wheel here.
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Redefining NULL
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The C standard does not require null pointers to be at the machine's address zero. HOWEVER, casting a 0 constant to a pointer value must result in a NULL pointer (§6.3.2.3/3), and evaluating the null pointer as a boolean must be false. Thi...