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Should I use static_cast or reinterpret_cast when casting a void* to whatever
...a number of meanings, for all of which holds that “the mapping performed by reinterpret_cast is implementation-defined.” [5.2.10.3]
But in the particular case of casting from void* to T* the mapping is completely well-defined by the standard; namely, to assign a type to a typeless pointer witho...
Position: absolute and parent height?
...eeping the children as position: absolute, you could do so with JavaScript by finding the height of the absolutely positioned children after they have rendered, and using that to set the height of the parent.
Alternatively, just use float: left/float:right and margins to get the same positioning ef...
Test for equality among all elements of a single vector
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I use this method, which compares the min and the max, after dividing by the mean:
# Determine if range of vector is FP 0.
zero_range <- function(x, tol = .Machine$double.eps ^ 0.5) {
if (length(x) == 1) return(TRUE)
x <- range(x) / mean(x)
isTRUE(all.equal(x[1], x[2], tolerance = ...
Get item in the list in Scala?
...ly defined for some inputs) into a normal function (defined for any input) by basically wrapping the result in an Option.
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What is the difference between NULL, '\0' and 0?
...BEEF
if (pointer == MYNULL)
if (pointer == 0xDEADBEEF)
as these are seen by a compiler as normal comparisons.
Null Characters
'\0' is defined to be a null character - that is a character with all bits set to zero. This has nothing to do with pointers. However you may see something similar to th...
Maximum and Minimum values for ints
...lable in Python 3 as sys.maxsize, which is the maximum value representable by a signed word. Equivalently, it's the size of the largest possible list or in-memory sequence.
Generally, the maximum value representable by an unsigned word will be sys.maxsize * 2 + 1, and the number of bits in a word w...
How do I restart nginx only after the configuration test was successful on Ubuntu?
...ually restart if the configuration is bad.
The only way to screw it up is by doing an nginx stop and then start again. It would succeed to stop, but fail to start.
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Ignore mouse interaction on overlay image
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Keep in mind that pointer-events isn't supported by all major browsers yet. IE doesn't support it (surprise...), and I think Safari doesn't support it either.
– Hatchmaster
Oct 9 '12 at 16:22
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How do I move an existing window to a new tab?
...t with recent versions of Vim (>= 7.3) you can also use persistent undo by setting set undodir=/path/to/dir where /path/to/dir is a directory you've created for the purpose and then set undofile. This will allow you quit vim and then restart and still retain the undo/redo state.
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Why doesn't list have safe “get” method like dictionary?
...st code doesn't use it. If you just wanted to use this with lists created by your own code you could simply subclass list and add the get method.
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