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Here is a piece of C++ code that seems very peculiar. For some strange reason, sorting the data miraculously makes the code almost six times faster. #include <algorithm> #include <ctime> #


I committed the wrong files to Git. I haven't yet pushed the commit to the server. How can I undo those commits?


I want to delete a branch both locally and on my remote project fork on GitHub. Failed Attempts to Delete Remote Branch $ git branch -d remotes/origin/bugfix error: branch 'remotes/origin/bugfix'


What are the differences between git pull and git fetch?


I've been messing around with JSON for some time, just pushing it out as text and it hasn't hurt anybody (that I know of), but I'd like to start doing things properly. I have seen so many purported "


I wrote the wrong thing in a commit message. Alternatively, I've forgotten to include some files. How can I change the commit message/files? The commit has not been pushed yet.


How would you explain JavaScript closures to someone with a knowledge of the concepts they consist of (for example functions, variables and the like), but does not understand closures themselves? I


How can I redirect the user from one page to another using JavaScript or jQuery?


What is the use of the yield keyword in Python? What does it do? For example, I'm trying to understand this code1: def _get_child_candidates(self, distance, min_dist, max_dist): if self.


After reading Hidden Features and Dark Corners of C++/STL on comp.lang.c++.moderated, I was completely surprised that the following snippet compiled and worked in both Visual Studio 2008 and G++ 4.4.


Usually I would expect a String.contains() method but there doesn't seem to be one. What is a reasonable way to check for this?


Programming language books explain that value types are created on the stack, and reference types are created on the heap, without explaining what these two things are. I haven't read a clear


I mistakenly added files using the command: git add myfile.txt I have not yet run git commit. Is there a way to undo this, so these files won't be included in the commit?


It is possible to toggle the visibility of an element, using the functions .hide(), .show() or .toggle(). How would you test if an element is visible or hidden?


Recently, I ran some of my JavaScript code through Crockford's JSLint, and it gave the following error: Problem at line 1 character 1: Missing "use strict" statement. Doing some searching, I


How come certain random strings produce colors when entered as background colors in HTML? For example: <body bgcolor="chucknorris"> test </body> produces a document with a


I don't want to rename a remote branch, as described in Rename master branch for both local and remote Git repositories. How can I rename a local branch which hasn't been pushed to a remote branch?


If I run the following program, which parses two date strings referencing times 1 second apart and compares them: public static void main(String[] args) throws ParseException { SimpleDateFormat

VAR函数名= function() { }与{ }功能functionname()

I've recently started maintaining someone else's JavaScript code. I'm fixing bugs, adding features and also trying to tidy up the code and make it more consistent. The previous developer uses two


How do I revert from my current state to a snapshot made on a certain commit? If I do git log, I get the following output: $ git log commit a867b4af366350be2e7c21b8de9cc6504678a61b` Author: Me <

在JavaScript比较中应该使用哪个操作符(= = = =)?

I'm using JSLint to go through JavaScript, and it's returning many suggestions to replace == (two equals signs) with === (three equals signs) when doing things like comparing idSele_UNVEHtype.value.


How do you delete untracked local files from your current working tree?


Can I use comments inside a JSON file? If so, how?


Form-based authentication for websites We believe that Stack Overflow should not just be a resource for very specific technical questions, but also for general guidelines on how to solve

Suppose I'm familiar with developing client-side applications in jQuery, but now I'd like to start using AngularJS. Can you describe the paradigm shift that is necessary? Here are a few questions that


I have an array of integers, which I'm using the .push() method to add to. Is there a simple way to remove a specific element from an array? The equivalent of something like array.remove(int);. I


What is the difference between: px dip dp and sp on Android?

C #字符串和字符串之间的区别是什么?

Example (note the case): string s = "Hello world!"; String S = "Hello world!"; What are the guidelines for the use of each? And what are the differences?


I always thought Java was pass-by-reference; however I've seen a couple of blog posts (For example, this blog) that claim it's not. I don't think I understand the distinction they're making. What is


We have an employee whose last name is Null. Our employee lookup application is killed when that last name is used as the search term (which happens to be quite often now). The error received (thanks


This question attempts to collect the few pearls among the dozens of bad C++ books that are published every year. Unlike many other programming languages, which are often picked up on the go from


Somebody pushed a branch called test with git push origin test to a shared repository. I can see the branch with git branch -r. Now I'm trying to check out the remote test branch. I've tried: git


I'd prefer as little formal definition as possible and simple mathematics.


How do I force an overwrite of local files on a git pull? The scenario is following: A team member is modifying the templates for a website we are working on They are adding some images to the


Say I create an object as follows: var myObject = { "ircEvent": "PRIVMSG", "method": "newURI", "regex": "^http://.*" }; What is the best way to remove the property regex to end up with


What is the most efficient way to clone a JavaScript object? I've seen obj = eval(uneval(o)); being used, but that's non-standard and only supported by Firefox. I've done things like obj = JSON.parse(


For anchors that act like buttons (for example, Questions, Tags, Users, etc. at the top of the Stack Overflow page) or tabs, is there a CSS standard way to disable the highlighting effect if the


What are metaclasses? What do you use them for?


According to the HTTP/1.1 Spec: The POST method is used to request that the origin server accept the entity enclosed in the request as a new subordinate of the resource identified by the Request-


Is there a good way to explain how to resolve merge conflicts in Git?


What is the maximum length of a URL in different browsers? Does it differ among browsers? Does the HTTP protocol dictate it?


Also how do LEFT JOIN, RIGHT JOIN and FULL JOIN fit in?


Is there something in JavaScript similar to @import in CSS that allows you to include a JavaScript file inside another JavaScript file?


I need to check the checked property of a checkbox and perform an action based on the checked property using jQuery. For example, if the age checkbox is checked, then I need to show a textbox to


How do I check whether a file exists, without using the try statement?


How do I get the path of the directory in which a Bash script is located, inside that script? For instance, let's say I want to use a Bash script as a launcher for another application. I want to


If Python does not have a ternary conditional operator, is it possible to simulate one using other language constructs?

The following are two methods of building a link that has the sole purpose of running JavaScript code. Which is better, in terms of functionality, page load speed, validation purposes, etc.?


Yesterday I was pairing the socks from the clean laundry and figured out the way I was doing it is not very efficient. I was doing a naive search — picking one sock and "iterating" the pile in


I have a master and a development branch, both pushed to GitHub. I've cloned, pulled, and fetched, but I remain unable to get anything other than the master branch back. I'm sure I'm missing