Assuming what you need is a simple byte swap, try something like Unsigned 16 bit conversion: swapped = (num>>8) | (num<<8); Unsigned 32-bit conversion: swapped = ((num>>24)&0xff) | // move byte 3 to byte 0 ((num<<8)&0xff0000) | // move byte 1 to byte 2 ((num>>8)&0xff00) | // move byte 2 to byte 1 ((num<<24)&0xff000000); // … Read more
Why Infinite loop? Infinite loop is because of self loop in your list after calling swap() function. In swap() code following statement is buggy. (*b)->next = (temp1)->next; Why?: Because after the assignment statement in swap() function temp1‘s next starts pointing to b node. And node[b]‘s next point to itself in a loop. And the self … Read more
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It is a matter of judgment. I will typically let std::swap do the job for prototyping code, but for release code write a custom swap. I can usually write a custom swap that is about twice as fast as 1 move construction + 2 move assignments + 1 resourceless destruction. However one may want to … Read more
From python.org Assignment of an object to a target list, optionally enclosed in parentheses or square brackets, is recursively defined as follows. … Else: The object must be an iterable with the same number of items as there are targets in the target list, and the items are assigned, from left to right, to the … Read more
The best script I found is on this page : http://northernmost.org/blog/find-out-what-is-using-your-swap/ Here’s one variant of the script and no root needed: #!/bin/bash # Get current swap usage for all running processes # Erik Ljungstrom 27/05/2011 # Modified by Mikko Rantalainen 2012-08-09 # Pipe the output to “sort -nk3” to get sorted output # Modified by … Read more
How is std::swap implemented? Yes, the implementation presented in the question is the classic C++03 one. A more modern (C++11) implementation of std::swap looks like this: template<typename T> void swap(T& t1, T& t2) { T temp = std::move(t1); // or T temp(std::move(t1)); t1 = std::move(t2); t2 = std::move(temp); } This is an improvement over the … Read more
is the proper use of swap. Write it this way when you write “library” code and want to enable ADL (argument-dependent lookup) on swap. Also, this has nothing to do with SFINAE. // some algorithm in your code template<class T> void foo(T& lhs, T& rhs) { using std::swap; // enable ‘std::swap’ to be found // … Read more
While it is not possible to write a function that simply swaps two variables, it is possible to write a helper function that allows you to: Swap two variables using only one statement Without temporary variables in the caller’s code Without ‘boxing’ primitives With a few overloads (one of them using generics), it works for … Read more
Python correctly interprets the code as if you used additional variables, so the swapping code is equivalent to: t1 = b[:,0,0] t2 = a[:,0,0] a[:,0,0] = t1 b[:,0,0] = t2 However, even this code doesn’t swap values correctly! This is because Numpy slices don’t eagerly copy data, they create views into existing data. Copies are … Read more