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What's the difference between std::move and std::forward
..., to possibly match a move constructor or a function accepting rvalues. It does that for std::move(x) even if x is not an rvalue by itself.
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How do you clear a slice in Go?
...r slice []T
then enforcing len(slice) to be zero, by the above "trick", doesn't make any element of
slice[:cap(slice)]
eligible for garbage collection. This might be the optimal approach in some scenarios. But it might also be a cause of "memory leaks" - memory not used, but potentially reacha...
How to exclude certain directories/files from git grep search
...kynan as base I made this script and put it in my path (~/bin/) as gg. It does use git grep but avoids some specified filetypes.
In our repo its a lot of images so I have excluded the imagefiles, and this takes the serchtime down to 1/3 if I search the whole repo. But the script could easily be mo...
Why is XOR the default way to combine hashes?
...ault function to use when hashing. It is better than and and or, but that doesn't say much.
xor is symmetric, so the order of the elements is lost. So "bad" will hash combine the same as "dab".
xor maps pairwise identical values to zero, and you should avoid mapping "common" values to zero:
So ...
Change values while iterating
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@dystroy: The second approach above doesn't change the types (the "structures") wrt the OP.
– zzzz
Apr 11 '13 at 10:13
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Linq to Entities join vs groupjoin
...According to eduLINQ:
The best way to get to grips with what GroupJoin does is to think of
Join. There, the overall idea was that we looked through the "outer"
input sequence, found all the matching items from the "inner" sequence
(based on a key projection on each sequence) and then yield...
Which is generally best to use — StringComparison.OrdinalIgnoreCase or StringComparison.InvariantCul
... is more expensive than OrdinalIgnoreCase. The fact that OrdinalIgnoreCase does not perform any special unicode normalization, means that some strings that render in the same way on a computer screen, will not be considered identical. For example: "\u0061\u030a" and "\u00e5" both render å. However ...
How can you diff two pipelines in Bash?
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process substitution (foo <( pipe )) doesn't modify the filesystem. The pipe is anonymous; it has no name in the filesystem. The shell uses the pipe system call to create it, not mkfifo. Use strace -f -efile,desc,clone,execve bash -c '/bin/true | diff -u - &l...
How to get error information when HttpWebRequest.GetResponse() fails
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@PreguntonCojoneroCabrón Yea, it doesn't seem quite right, does it. Thankfully Microsoft introduced the HttpClient-class, that I suspect most are using these days. msdn.microsoft.com/en-us/library/…
– Morten Nørgaard
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Using tags in the with other HTML
...nless HTML "Living Standard" has now become the official one, which, alas, does not allow STYLE in the BODY. The short-lived happy days are over. ;) The W3C validator also works by the WHATWG specs now. (Thanks @FrankConijn for the heads-up!)
(Note: this is the case "as of today", but since there's...