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Multiplication on command line terminal
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For more advanced and precise math consider using bc(1).
echo "3 * 2.19" | bc -l
6.57
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shared_ptr to an array : should it be used?
...r delete p, when T is not an array type, shall have well-defined behavior, and shall not throw exceptions.
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Remarks: When T is an array type, this constructor shall not participate in overload resolution unless the expression delete[] p is well-formed and either T is U[N] and Y(*)[N] is conve...
How can I select item with class within a DIV?
... context.
Good to learn from the find() documentation:
The .find() and .children() methods are similar, except that the
latter only travels a single level down the DOM tree.
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How do I deep copy a DateTime object?
Now $date1 and $date2 contain the same date -- three years from now. I'd like to create two separate datetimes, one which is parsed from a string and one with three years added to it. Currently I've hacked it up like this:
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How to reload page every 5 seconds?
... answered May 7 '10 at 10:03
jAndyjAndy
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How can I exclude directories from grep -R?
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SOLUTION 1 (combine find and grep)
The purpose of this solution is not to deal with grep performance but to show a portable solution : should also work with busybox or GNU version older than 2.5.
Use find, for excluding directories foo and bar :
find...
How do I mock an open used in a with statement (using the Mock framework in Python)?
...rite('something')
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<mock.Mock object at 0x...>
>>> file_handle = mock_open.return_value.__enter__.return_value
>>> file_handle.write.assert_called_with('something')
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Why is a pure virtual function initialized by 0?
...He also states explicitly that this need not set the vtable entry to NULL, and that doing so is not the best way of implementing pure virtual functions.
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How to fix PCH error?
...ching problem. Usually it can be resolved by holding down the Option key and choosing Product > Clean Build Folder...
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Reactive Extensions bug on Windows Phone
...;(type);
You are missing the type declaration. The compiler is guessing (and guessing wrong). Strictly type everything and it should run.
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