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Different floating point result with optimization enabled - compiler bug?
... for the
x86 architecture. For most programs, the excess precision does
only good, but a few programs rely on the precise definition of
IEEE floating point. Use -ffloat-store for such programs, after
modifying them to store all pertinent intermediate computations
...
How to exit in Node.js
...ust fired up as needed, like PHP is within a web server like Apache. Node doesn't even have to have anything to do with web servers at all! It's just a host for some JavaScript, with some nifty built-in libraries for doing useful things.
– Brad
Sep 20 '12 at ...
How to request Administrator access inside a batch file
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This script does the trick! Just paste it into the top of your bat file. If you want to review the output of your script, add a "pause" command at the bottom of your batch file.
UPDATE: This script is now slightly edited to support comm...
Strangest language feature
...[10]
which is very common.
However, the lesser known form (which really does work!) is:
10[a]
which means the same as the above.
share
edited Jan 3 '10 at 15:57
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Is it possible to Pivot data using LINQ?
...=> c.OrderDate.Month == 3).Sum(c => c.Qty)
});
GroupBy in Linq does not work the same as SQL. In SQL, you get the key and aggregates (row/column shape). In Linq, you get the key and any elements as children of the key (hierarchical shape). To pivot, you must project the hierarchy back...
Detecting an undefined object property
...operty value is the special value `undefined`");
}
To check if an object does not actually have such a property, and will therefore return undefined by default when you try and access it:
if(!o.hasOwnProperty('myProperty')) {
alert("myProperty does not exist");
}
To check if the value associa...
What is the concept of erasure in generics in Java?
...t;T> parameter to a constructor (or generic method) simply because Java doesn't retain that information. Look at EnumSet.allOf for example - the generic type argument to the method should be enough; why do I need to specify a "normal" argument as well? Answer: type erasure. This sort of thing pol...
Adding external library into Qt Creator project
...efix). Of course, if you are including a Windows specific lib, this really doesn't matter.
In case you want to store your lib files in the project directory, you can reference them with the $$_PRO_FILE_PWD_ variable, e.g.:
LIBS += -L"$$_PRO_FILE_PWD_/3rdparty/libs/" -lpsapi
...
Why am I getting an OPTIONS request instead of a GET request?
it does an OPTIONS request to that URL, and then the callback is never called with anything.
10 Answers
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Remove all occurrences of a value from a list?
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This doesn't modify the original list but returns a new list.
– John Y
Jul 21 '09 at 3:20
6
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