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std::function and std::bind: what are they, and when should they be used?
...a,b) := f(a, 4, b);
g is a "partial application" of the function f: the middle argument has already been specified, and there are two left to go.
You can use std::bind to get g:
auto g = bind(f, _1, 4, _2);
This is more concise than actually writing a functor class to do it.
There are further...
How to limit UITableView row reordering to a section
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This implementation will prevent re-ordering outside of the original section like Phil's answer, but it will also snap the record to the first or last row of the section, depending on where the drag went, instead of where it started.
- (NSIndexPath *)tableView:(UITableView...
Find and replace with sed in directory and sub directories
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Your find should look like that to avoid sending directory names to sed:
find ./ -type f -exec sed -i -e 's/apple/orange/g' {} \;
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Named colors in matplotlib
...in a comment above to get a color list sorted in columns. The order is not identical to how I would sort by eye, but I think it gives a good overview.
I updated the image and code to reflect that 'rebeccapurple' has been added and the three sage colors have been moved under the 'xkcd:' prefix since...
How to loop through all but the last item of a list?
...I would get the item after x. Is this possible?
– David Sykes
May 27 '09 at 9:19
3
- 1 I don't th...
Why is TypedReference behind the scenes? It's so fast and safe… almost magical!
...arning: This question is a bit heretical... religious programmers always abiding by good practices, please don't read it. :)
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Greenlet Vs. Threads
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Greenlets provide concurrency but not parallelism. Concurrency is when code can run independently of other code. Parallelism is the execution of concurrent code simultaneously. Parallelism is particularly useful when there's a lot of work ...
Git - Difference Between 'assume-unchanged' and 'skip-worktree'
...hows up when i do 'git status' as something to be staged. I would like to hide this particular change and not commit it. I won't make any other changes to the file.
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When to use std::forward to forward arguments?
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Use it like your first example:
template <typename T> void f(T && x)
{
g(std::forward<T>(x));
}
template <typename ...Args> void f(Args && ...args)
{
g(std::forward<Args>(args)...);
}
That's because of the reference collapsing rules: If T =...
Mismatch Detected for 'RuntimeLibrary'
...:\cryptopp. I used Visual Studio Express 2012 to build all the projects inside (as instructed in readme), and everything was built successfully. Then I made a test project in some other folder and added cryptolib as a dependency. After that, I added the include path so I can easily include all the h...