Most Popular
1500 questions
2807
votes
36 answers
How can I save an activity state using the save instance state?
I've been working on the Android SDK platform, and it is a little unclear how to save an application's state. So given this minor re-tooling of the 'Hello, Android' example:
package com.android.hello;
import android.app.Activity;
import…
Bernard
- 44,632
- 18
- 53
- 69
2799
votes
59 answers
How do I get the current date in JavaScript?
How do I get the current date in JavaScript?
Suresh
- 36,587
- 15
- 58
- 62
2794
votes
36 answers
How do I pass command line arguments to a Node.js program?
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 server.js is my server code. Node.js help says…
milkplus
- 30,869
- 7
- 28
- 31
2786
votes
21 answers
Determine installed PowerShell version
How can I determine what version of PowerShell is installed on a computer, and indeed if it is installed at all?
Tangiest
- 43,099
- 24
- 79
- 110
2786
votes
90 answers
How do I detect a click outside an element?
I have some HTML menus, which I show completely when a user clicks on the head of these menus. I would like to hide these elements when the user clicks outside the menus' area.
Is something like this possible with…
Sergio del Amo
- 74,335
- 67
- 149
- 178
2784
votes
13 answers
What are the correct version numbers for C#?
What are the correct version numbers for C#? What came out when? Why can't I find any answers about C# 3.5?
This question is primarily to aid those who are searching for an answer using an incorrect version number, e.g. C# 3.5. The hope is that…
Jon Skeet
- 1,335,956
- 823
- 8,931
- 9,049
2782
votes
25 answers
Converting string into datetime
How do I convert the following string to a datetime object?
"Jun 1 2005 1:33PM"
Oli
- 228,145
- 62
- 212
- 294
2777
votes
15 answers
How do I access environment variables in Python?
How do I get the value of an environment variable in Python?
Amit Yadav
- 28,830
- 6
- 40
- 52
2774
votes
14 answers
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
- 32,142
- 8
- 35
- 54
2773
votes
28 answers
How can I prevent SQL injection in PHP?
If user input is inserted without modification into an SQL query, then the application becomes vulnerable to SQL injection, like in the following example:
$unsafe_variable = $_POST['user_input'];
mysql_query("INSERT INTO `table` (`column`) VALUES…
Andrew G. Johnson
- 26,163
- 30
- 87
- 133
2773
votes
7 answers
Flash CS4 refuses to let go
I have a Flash project, and it has many source files. I have a fairly heavily-used class, call it Jenine. I recently (and, perhaps, callously) relocated Jenine from one namespace to another. I thought we were ready - I thought it was time. The new…
Ender
- 26,873
- 7
- 27
- 33
2773
votes
17 answers
I need an unordered list without any bullets
I have created an unordered list. I feel the bullets in the unordered list are bothersome, so I want to remove them.
Is it possible to have a list without bullets?
praveenjayapal
- 36,211
- 29
- 70
- 72
2771
votes
7 answers
How does database indexing work?
Given that indexing is so important as your data set increases in size, can someone explain how indexing works at a database-agnostic level?
For information on queries to index a field, check out How do I index a database column.
Xenph Yan
- 80,783
- 15
- 46
- 55
2761
votes
6 answers
How can I see the differences between two branches?
I have two branches: branch_1 and branch_2.
How can I see the differences between them?
isuruanu
- 27,675
- 3
- 13
- 4
2761
votes
39 answers
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
- 32,849
- 8
- 29
- 27