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1500 questions
3277
votes
12 answers
Difference between "git add -A" and "git add ."
The command git add [--all|-A] appears to be identical to git add .. Is this correct? If not, how do they differ?
cmcginty
- 107,539
- 39
- 157
- 158
3264
votes
26 answers
Commit only part of a file in Git
When I make changes to a file in Git, how can I commit only some of the changes?
For example, how could I commit only 15 lines out of 30 lines that have been changed in a file?
freddiefujiwara
- 53,587
- 28
- 74
- 104
3260
votes
30 answers
How to concatenate string variables in Bash
In PHP, strings are concatenated together as follows:
$foo = "Hello";
$foo .= " World";
Here, $foo becomes "Hello World".
How is this accomplished in Bash?
Strawberry
- 62,326
- 55
- 143
- 194
3254
votes
82 answers
How do I iterate over the words of a string?
I'm trying to iterate over the words of a string.
The string can be assumed to be composed of words separated by whitespace.
Note that I'm not interested in C string functions or that kind of character manipulation/access. Also, please give…
Ashwin Nanjappa
- 72,576
- 76
- 202
- 288
3251
votes
29 answers
Case insensitive 'Contains(string)'
Is there a way to make the following return true?
string title = "ASTRINGTOTEST";
title.Contains("string");
There doesn't seem to be an overload that allows me to set the case sensitivity. Currently I UPPERCASE them both, but that's just silly (by…
Boris Callens
- 86,820
- 84
- 205
- 301
3247
votes
31 answers
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
- 64,108
- 26
- 59
- 85
3231
votes
27 answers
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
- 179,335
- 97
- 219
- 202
3216
votes
51 answers
How can I check if an object is an array?
I'm trying to write a function that either accepts a list of strings, or a single string. If it's a string, then I want to convert it to an array with just the one item so I can loop over it without fear of an error.
So how do I check if the…
mpen
- 256,080
- 255
- 805
- 1,172
3215
votes
89 answers
What is the JavaScript version of sleep()?
Is there a better way to engineer a sleep in JavaScript than the following pausecomp function (taken from here)?
function pausecomp(millis)
{
var date = new Date();
var curDate = null;
do { curDate = new Date(); }
while(curDate-date…
fmsf
- 35,134
- 48
- 145
- 193
3213
votes
11 answers
Improve INSERT-per-second performance of SQLite
Optimizing SQLite is tricky. Bulk-insert performance of a C application can vary from 85 inserts per second to over 96,000 inserts per second!
Background: We are using SQLite as part of a desktop application. We have large amounts of configuration…
Mike Willekes
- 5,820
- 10
- 31
- 33
3198
votes
13 answers
3197
votes
33 answers
How can I change an element's class with JavaScript?
How can I change the class of an HTML element in response to an onclick or any other events using JavaScript?
Nathan Smith
- 35,009
- 6
- 27
- 25
3187
votes
28 answers
How to check if a string contains a substring in Bash
I have a string in Bash:
string="My string"
How can I test if it contains another string?
if [ $string ?? 'foo' ]; then
echo "It's there!"
fi
Where ?? is my unknown operator. Do I use echo and grep?
if echo "$string" | grep 'foo'; then
echo…
davidsheldon
- 35,425
- 4
- 26
- 27
3182
votes
98 answers
How can I convert a string to boolean in JavaScript?
Can I convert a string representing a boolean value (e.g., 'true', 'false') into a intrinsic type in JavaScript?
I have a hidden form in HTML that is updated based upon a user's selection within a list. This form contains some fields which represent…
Kevin
- 7,816
- 11
- 34
- 39
3174
votes
43 answers
Creating multiline strings in JavaScript
I have the following code in Ruby. I want to convert this code into JavaScript. What is the equivalent code in JS?
text = <<"HERE"
This
Is
A
Multiline
String
HERE
Newy
- 36,597
- 9
- 42
- 55