swap

How to find out which processes are using swap space in Linux?

由 偶尔善良 提交于 2019-11-26 06:50:54
问题 Under Linux, how do I find out which process is using the swap space more? 回答1: Run top then press O p Enter . Now processes should be sorted by their swap usage. Here is an update as my original answer does not provide an exact answer to the problem as pointed out in the comments. From the htop FAQ: It is not possible to get the exact size of used swap space of a process. Top fakes this information by making SWAP = VIRT - RES, but that is not a good metric, because other stuff such as video

Swap slices of Numpy arrays

由 旧巷老猫 提交于 2019-11-26 05:32:56
问题 I love the way python is handling swaps of variables: a, b, = b, a and I would like to use this functionality to swap values between arrays as well, not only one at a time, but a number of them (without using a temp variable). This does not what I expected (I hoped both entries along the third dimension would swap for both): import numpy as np a = np.random.randint(0, 10, (2, 3,3)) b = np.random.randint(0, 10, (2, 5,5)) # display before a[:,0, 0] b[:,0,0] a[:,0,0], b[:, 0, 0] = b[:, 0, 0], a[

Is it possible to write swap method in Java? [duplicate]

由 时光怂恿深爱的人放手 提交于 2019-11-26 05:25:53
问题 This question already has answers here : How to write a basic swap function in Java [duplicate] (19 answers) Java method to swap primitives (8 answers) Closed 3 years ago . Here is the question: write a method that swaps two variables. These two variables should be primitives. It doesn\'t need to be generic e.g. two int variables. Is there a way?! 回答1: Without using an array or objects, no, it is not possible to do it within a method. 回答2: While it is not possible to write a function that

How to write a basic swap function in Java [duplicate]

由 亡梦爱人 提交于 2019-11-26 04:11:33
问题 This question already has an answer here: Java method to swap primitives 8 answers I am new to java. How to write the java equivalent of the following C code. void Swap(int *p, int *q) { int temp; temp = *p; *p = *q; *q = temp; } 回答1: Here is one trick: public static int getItself(int itself, int dummy) { return itself; } public static void main(String[] args) { int a = 10; int b = 20; a = getItself(b, b = a); } 回答2: Sorting two ints The short answer is: you can't do that, java has no

Examples of when a bitwise swap() is a bad idea?

由 烂漫一生 提交于 2019-11-26 03:21:40
问题 You\'re not supposed to treat object pointers as pointers to raw binary data in OOP languages, including C++. Objects are \"more than\" their representation. So, for example, swap ing two objects by swapping their bytes is incorrect: template<class T> void bad_swap(T &a, T &b) // Assuming T is the most-derived type of the object { char temp[sizeof(T)]; memcpy(temp, &a, sizeof(a)); memcpy(&a, &b, sizeof(b)); memcpy(&b, temp, sizeof(temp)); } The only situation, however, in which I can imagine

Dynamically replace the contents of a C# method?

由 血红的双手。 提交于 2019-11-26 02:49:14
What I want to do is change how a C# method executes when it is called, so that I can write something like this: [Distributed] public DTask<bool> Solve(int n, DEvent<bool> callback) { for (int m = 2; m < n - 1; m += 1) if (m % n == 0) return false; return true; } At run-time, I need to be able to analyse methods that have the Distributed attribute (which I already can do) and then insert code before the body of the function executes and after the function returns. More importantly, I need to be able to do it without modifying code where Solve is called or at the start of the function (at

how to provide a swap function for my class?

由 你说的曾经没有我的故事 提交于 2019-11-26 02:42:01
问题 What is the proper way to enable my swap in STL algorithms? 1) Member swap . Does std::swap use SFINAE trick to use the member swap . 2) Free standing swap in the same namespace. 3) Partial specialization of std::swap . 4) All of the above. Thank you. EDIT: Looks like I didn\'t word my question clearly. Basically, I have a template class and I need STL algos to use the (efficient) swap method I wrote for that class. 回答1: 1) is the proper use of swap . Write it this way when you write "library

Swap rows with columns (transposition) of a matrix in javascript [duplicate]

由 自作多情 提交于 2019-11-26 02:00:10
问题 This question already has an answer here: Transposing a 2D-array in JavaScript 20 answers For instance I have a matrix like this: |1 2 3| |4 5 6| |7 8 9| and I need it to convert into a matrix like this: |1 4 7| |2 5 8| |3 6 9| What is the best and optimal way to achieve this goal? 回答1: See article: Transpose An Array In JavaScript and jQuery function transpose(a) { // Calculate the width and height of the Array var w = a.length || 0; var h = a[0] instanceof Array ? a[0].length : 0; // In

Dynamically replace the contents of a C# method?

由 拜拜、爱过 提交于 2019-11-26 01:41:15
问题 What I want to do is change how a C# method executes when it is called, so that I can write something like this: [Distributed] public DTask<bool> Solve(int n, DEvent<bool> callback) { for (int m = 2; m < n - 1; m += 1) if (m % n == 0) return false; return true; } At run-time, I need to be able to analyse methods that have the Distributed attribute (which I already can do) and then insert code before the body of the function executes and after the function returns. More importantly, I need to

Is there a native jQuery function to switch elements?

由 时光总嘲笑我的痴心妄想 提交于 2019-11-26 01:06:41
问题 Can I easily swap two elements with jQuery? I\'m looking to do this with one line if possible. I have a select element and I have two buttons to move up or down the options, and I already have the selected and the destination selectors in place, I do it with an if, but I was wondering if there is an easier way. 回答1: I've found an interesting way to solve this using only jQuery: $("#element1").before($("#element2")); or $("#element1").after($("#element2")); :) 回答2: Paulo's right, but I'm not
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