Highest scored questions - Page 5

3313 votes

20 answers

2.4m views

How to iterate over a dictionary?

I've seen a few different ways to iterate over a dictionary in C#. Is there a standard way?

Jake Stewart

33.3k

asked Sep 26, 2008 at 18:20

3313 votes

42 answers

2.1m views

How do I pass a variable by reference?

I wrote this class for testing: class PassByReference: def __init__(self): self.variable = 'Original' self.change(self.variable) print(self.variable) def change(self, ...

David Sykes

49.4k

asked Jun 12, 2009 at 10:23

3296 votes

22 answers

1.8m views

How do I disable the resizable property of a textarea?

I want to disable the resizable property of a textarea. Currently, I can resize a textarea by clicking on the bottom right corner of the textarea and dragging the mouse. How can I disable this?

user549757

33.6k

asked Mar 8, 2011 at 16:15

3282 votes

45 answers

3.8m views

How to add a column with a default value to an existing table in SQL Server?

How can I add a column with a default value to an existing table in SQL Server 2000 / SQL Server 2005?

Mathias

33.9k

asked Sep 18, 2008 at 12:30

3252 votes

14 answers

939k views

event.preventDefault() vs. return false

When I want to prevent other event handlers from executing after a certain event is fired, I can use one of two techniques. I'll use jQuery in the examples, but this applies to plain-JS as well: 1. ...

RaYell

70.1k

asked Aug 31, 2009 at 11:58

3250 votes

11 answers

3.1m views

Manually raising (throwing) an exception in Python

How do I raise an exception in Python so that it can later be caught via an except block?

TIMEX

268k

asked Jan 12, 2010 at 21:07

3248 votes

45 answers

484k views

JavaScript closure inside loops – simple practical example

var funcs = []; // let's create 3 functions for (var i = 0; i < 3; i++) { // and store them in funcs funcs[i] = function() { // each should log its value. console.log("My value:", i); ...

nickf

543k

asked Apr 15, 2009 at 6:06

3242 votes

22 answers

1.6m views

How do I modify a specific commit?

I have the following commit history: HEAD HEAD~ HEAD~2 HEAD~3 git commit --amend modifies the current HEAD commit. But how do I modify HEAD~3?

Sam Liao

45.2k

asked Jul 27, 2009 at 5:19

3238 votes

31 answers

4.5m views

How do I concatenate two lists in Python?

How do I concatenate two lists in Python? Example: listone = [1, 2, 3] listtwo = [4, 5, 6] Expected outcome: >>> joinedlist [1, 2, 3, 4, 5, 6]

y2k

65.8k

asked Nov 12, 2009 at 7:04

3236 votes

13 answers

3.8m views

How do I make a time delay? [duplicate]

How do I put a time delay in a Python script?

user46646

157k

asked Feb 4, 2009 at 7:04

3234 votes

7 answers

2.8m views

Understanding Python super() with init() methods [duplicate]

Why is super() used? Is there a difference between using Base.__init__ and super().__init__? class Base(object): def __init__(self): print "Base created" class ChildA(...

Mizipzor

51.9k

asked Feb 23, 2009 at 0:30

3232 votes

105 answers

1.4m views

How do you disable browser autocomplete on web form field / input tags?

How do you disable autocomplete in the major browsers for a specific input (or form field)?

Brett Veenstra

48.1k

asked Aug 5, 2008 at 16:22

3228 votes

49 answers

1.5m views

Detecting an undefined object property

How do I check if an object property in JavaScript is undefined?

Matt Sheppard

118k

asked Aug 26, 2008 at 7:25

3228 votes

59 answers

1.3m views

How do I test a class that has private methods, fields or inner classes?

How do I use JUnit to test a class that has internal private methods, fields or nested classes? It seems bad to change the access modifier for a method just to be able to run a test.

Community wiki

20 revs, 11 users 48%
Raedwald

3224 votes

16 answers

6.1m views

How do I change the size of figures drawn with Matplotlib?

How do I change the size of figure drawn with Matplotlib?

tatwright

38.2k

asked Dec 1, 2008 at 21:24

3222 votes

27 answers

5.0m views

How do I check if a list is empty?

For example, if passed the following: a = [] How do I check to see if a is empty?

Ray

190k

asked Sep 10, 2008 at 6:20

3218 votes

34 answers

2.3m views

Using async/await with a forEach loop

Are there any issues with using async/await in a forEach loop? I'm trying to loop through an array of files and await on the contents of each file. import fs from 'fs-promise' async function ...

Saad

52.8k

asked Jun 1, 2016 at 18:55

3217 votes

66 answers

2.5m views

How do I print colored text to the terminal?

How do I output colored text to the terminal in Python?

aboSamoor

32.4k

asked Nov 13, 2008 at 18:58

3213 votes

30 answers

1.2m views

How do I find and restore a deleted file in a Git repository?

Say I'm in a Git repository. I delete a file and commit that change. I continue working and make some more commits. Then, I discover that I need to restore that file after deleting it. I know I can ...

avdgaag

41.8k

asked Jun 4, 2009 at 22:40

3209 votes

36 answers

2.8m views

ssh "permissions are too open"

I get the following error from ssh: Permissions 0777 for '/Users/username/.ssh/id_rsa' are too open. It is recommended that your private key files are NOT accessible by others. This private key will ...

Yannick Schall

34.3k

asked Feb 14, 2012 at 2:02

3208 votes

14 answers

2.6m views

I ran into a merge conflict. How do I abort the merge?

I used git pull and had a merge conflict: unmerged: some_file.txt You are in the middle of a conflicted merge. How do I abandon my changes to the file and keep only the pulled changes?

Gwyn Morfey

33.3k

asked Sep 19, 2008 at 13:21

3196 votes

12 answers

2.4m views

How can I see the differences between two branches?

How can I see the differences between branches branch_1 and branch_2?

isuruanu

32k

asked Mar 23, 2012 at 5:47

3182 votes

40 answers

1.1m views

Should I use the datetime or timestamp data type in MySQL?

Would you recommend using a datetime or a timestamp field, and why (using MySQL)? I'm working with PHP on the server side.

Gad

42.1k

asked Jan 3, 2009 at 16:14

3182 votes

20 answers

293k views

Is it possible to apply CSS to half of a character?

What I am looking for: A way to style one HALF of a character. (In this case, half the letter being transparent) What I have currently searched for and tried (With no luck): Methods for styling half ...

SimplyAzuma

25.5k

asked May 9, 2014 at 16:16

3180 votes

19 answers

1.8m views

What does " 2>&1 " mean?

To combine stderr and stdout into the stdout stream, we append this to a command: 2>&1 e.g. to see the first few errors from compiling g++ main.cpp: g++ main.cpp 2>&1 | head What does ...

Tristan Havelick

68.6k

asked May 3, 2009 at 22:57

3172 votes

54 answers

831k views

How to stop EditText from gaining focus when an activity starts in Android?

I have an Activity in Android, with two elements: EditText ListView When my Activity starts, the EditText immediately has the input focus (flashing cursor). I don't want any control to have input ...

Mark

39.8k

asked Oct 12, 2009 at 15:03

3168 votes

22 answers

664k views

How do I make function decorators and chain them together?

How do I make two decorators in Python that would do the following? @make_bold @make_italic def say(): return "Hello" Calling say() should return: "<b><i>Hello</i>&...

Imran

89.7k

asked Apr 11, 2009 at 7:05

3151 votes

27 answers

1.7m views

How to set, clear, and toggle a single bit

How can I set, clear, and toggle a bit?

JeffV

54k

asked Sep 7, 2008 at 0:42

3151 votes

17 answers

867k views

Is there an "exists" function for jQuery?

How can I check the existence of an element in jQuery? The current code that I have is this: if ($(selector).length > 0) { // Do something } Is there a more elegant way to approach this? ...

Jake McGraw

56k

asked Aug 27, 2008 at 19:49

3148 votes

34 answers

1.5m views

How can I upload files asynchronously with jQuery?

I would like to upload a file asynchronously with jQuery. $(document).ready(function () { $("#uploadbutton").click(function () { var filename = $("#file").val(); $.ajax({...

Sergio del Amo

77.7k

asked Oct 3, 2008 at 10:22

3146 votes

31 answers

4.5m views

`git fetch` a remote branch

The remote repository contains various branches such as origin/daves_branch: $ git branch -r origin/HEAD -> origin/master origin/daves_branch origin/master How do I switch to daves_branch in the ...

David

35.7k

asked Mar 2, 2012 at 17:06

3146 votes

39 answers

1.2m views

How can I check if a program exists from a Bash script?

How would I validate that a program exists, in a way that will either return an error and exit, or continue with the script? It seems like it should be easy, but it's been stumping me.

gregh

36.9k

asked Feb 26, 2009 at 21:52

3142 votes

24 answers

2.4m views

HTTP GET with request body

I'm developing a new RESTful webservice for our application. When doing a GET on certain entities, clients can request the contents of the entity. If they want to add some parameters (for example ...

Evert

97.8k

asked Jun 10, 2009 at 20:47

3135 votes

12 answers

786k views

When should static_cast, dynamic_cast, const_cast, and reinterpret_cast be used?

What are the proper uses of: static_cast dynamic_cast const_cast reinterpret_cast (type)value (C-style cast) type(value) (function-style cast) How does one decide which to use in which specific ...

e.James

118k

asked Dec 1, 2008 at 20:11

3127 votes

70 answers

1.7m views

How do I split a list into equally-sized chunks?

How do I split a list of arbitrary length into equal sized chunks? See also: How to iterate over a list in chunks. To chunk strings, see Split string every nth character?.

jespern

33k

asked Nov 23, 2008 at 12:15

3118 votes

30 answers

1.7m views

How can I change the commit author for a single commit?

I want to change the author of one specific commit in the history. It's not the latest commit. Related: How do I change the author and committer name/email for multiple commits?

MicTech

43.9k

asked Jun 15, 2010 at 4:00

3111 votes

20 answers

3.3m views

What is the difference between Python's list methods append and extend?

What's the difference between the list methods append() and extend()?

Claudiu

227k

asked Oct 31, 2008 at 5:55

3111 votes

30 answers

916k views

What is the difference between #include <filename> and #include "filename"?

What is the difference between using angle brackets and quotes in an include directive? #include <filename> #include "filename"

quest49

50.6k

asked Aug 22, 2008 at 1:40

3104 votes

47 answers

3.0m views

Is there a standard function to check for null, undefined, or blank variables in JavaScript? [duplicate]

Is there a universal JavaScript function that checks that a variable has a value and ensures that it's not undefined or null? I've got this code, but I'm not sure if it covers all cases: function ...

Alex

35.5k

asked Apr 1, 2011 at 15:14

3101 votes

21 answers

3.1m views

How do I clone a Git repository into a specific folder?

The command git clone [email protected]:whatever creates a directory named whatever containing a Git repository: ./ whatever/ .git I want the contents of the Git repository cloned into my ...

David Smith

39.3k

asked Mar 16, 2009 at 15:56

3095 votes

54 answers

1.3m views

Is there a unique Android device ID?

Do Android devices have a unique ID, and if so, what is a simple way to access it using Java?

Tyler

31.5k

asked May 7, 2010 at 0:47

3093 votes

17 answers

1.1m views

What is the difference between the 'COPY' and 'ADD' commands in a Dockerfile?

What is the difference between the COPY and ADD commands in a Dockerfile, and when would I use one over the other? COPY <src> <dest> The COPY instruction will copy new files from <...

Steve

55.1k

asked Jul 25, 2014 at 14:31

3093 votes

16 answers

1.2m views

What is the --save option for npm install?

I saw some tutorial where the command was: npm install --save What does the --save option mean?

Dmitri

35.8k

asked Oct 24, 2013 at 23:54

3091 votes

43 answers

1.2m views

How do I change the author and committer name/email for multiple commits?

How do I change the author for a range of commits?

Flávio Amieiro

43.2k

asked Apr 15, 2009 at 3:09

3083 votes

41 answers

1.8m views

How do I pass command line arguments to a Node.js program and receive them?

I have a web server written in Node.js and I would like to launch with a specific folder. I'm not sure how to access arguments in JavaScript. I'm running node like this: $ node server.js folder here ...

milkplus

33.9k

asked Dec 4, 2010 at 1:56

3080 votes

24 answers

1.5m views

How to store objects in HTML5 localStorage/sessionStorage

I'd like to store a JavaScript object in HTML5 localStorage, but my object is apparently being converted to a string. I can store and retrieve primitive JavaScript types and arrays using localStorage, ...

Kristopher Johnson

82.1k

asked Jan 6, 2010 at 4:05

3073 votes

27 answers

3.8m views

Deleting an element from an array in PHP

Is there an easy way to delete an element from an array using PHP, such that foreach ($array) no longer includes that element? I thought that setting it to null would do it, but apparently it does ...

Ben

68.1k

asked Dec 15, 2008 at 20:28

3068 votes

39 answers

2.5m views

How can I know which radio button is selected via jQuery?

I have two radio buttons and want to post the value of the selected one. How can I get the value with jQuery? I can get all of them like this: $("form :radio") How do I know which one is selected?

juan

81.3k

asked Feb 27, 2009 at 19:53

3061 votes

16 answers

3.7m views

How can I check for "undefined" in JavaScript? [duplicate]

What is the most appropriate way to test if a variable is undefined in JavaScript? I've seen several possible ways: if (window.myVariable) Or if (typeof(myVariable) != "undefined") Or if (...

makerofthings7

61k

asked Aug 2, 2010 at 17:53

3044 votes

21 answers

2.1m views

How do I modify the URL without reloading the page?

Is there a way I can modify the URL of the current page without reloading the page? I would like to access the portion before the # hash if possible. I only need to change the portion after the domain,...

Robin Rodricks

113k

asked May 5, 2009 at 10:54

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