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1500 questions
1408
votes
15 answers
How do I move to end of line in Vim?
I know how to generally move around in command mode, specifically, jumping to lines, etc. But what is the command to jump to the end of the line that I am currently on?
salt.racer
- 21,903
- 14
- 44
- 51
1407
votes
20 answers
How can I pass arguments to a batch file?
I need to pass an ID and a password to a batch file at the time of running rather than hardcoding them into the file.
Here's what the command line looks like:
test.cmd admin P@55w0rd > test-log.txt
Keng
- 52,011
- 32
- 81
- 111
1406
votes
14 answers
How can I undo pushed commits using git?
I have a project in a remote repository, synchronized with a local repository (development) and the server one (prod). I've been making some commited changes already pushed to remote and pulled from the server. Now, I want to undo those changes. So…
Manolo
- 24,020
- 20
- 85
- 130
1405
votes
8 answers
Why is executing Java code in comments with certain Unicode characters allowed?
The following code produces the output "Hello World!" (no really, try it).
public static void main(String... args) {
// The comment below is not a typo.
// \u000d System.out.println("Hello World!");
}
The reason for this is that the Java…
Reg
- 10,717
- 6
- 37
- 54
1404
votes
24 answers
How to use SSH to run a local shell script on a remote machine?
I have to run a local shell script (windows/Linux) on a remote machine.
I have SSH configured on both machine A and B. My script is on machine A which will run some of my code on a remote machine, machine B.
The local and remote computers can be…
Arun
1404
votes
24 answers
In Python, how do I determine if an object is iterable?
Is there a method like isiterable? The only solution I have found so far is to call
hasattr(myObj, '__iter__')
But I am not sure how fool-proof this is.
willem
- 25,977
- 22
- 75
- 115
1403
votes
18 answers
Determine whether an array contains a value
I need to determine if a value exists in an array.
I am using the following function:
Array.prototype.contains = function(obj) {
var i = this.length;
while (i--) {
if (this[i] == obj) {
return true;
}
}
…
Prasad
- 58,881
- 64
- 151
- 199
1403
votes
39 answers
How can I check for an active Internet connection on iOS or macOS?
I would like to check to see if I have an Internet connection on iOS using the Cocoa Touch libraries or on macOS using the Cocoa libraries.
I came up with a way to do this using an NSURL. The way I did it seems a bit unreliable (because even Google…
Brock Woolf
- 46,656
- 50
- 121
- 144
1402
votes
15 answers
How to drop rows of Pandas DataFrame whose value in a certain column is NaN
I have this DataFrame and want only the records whose EPS column is not NaN:
>>> df
STK_ID EPS cash
STK_ID RPT_Date
601166 20111231 601166 NaN NaN
600036 20111231 600036 NaN 12
600016 20111231 600016 …
bigbug
- 55,954
- 42
- 77
- 96
1399
votes
23 answers
How can I uninstall npm modules in Node.js?
As commonly known, any npm module can be installed by running a simple command: npm install .
I have installed a few modules that I do not use any more and I just want to get them off. I have a few questions regarding this:
Do we have…
Manish Kumar
- 15,269
- 5
- 18
- 27
1399
votes
14 answers
Multiline string literal in C#
Is there an easy way to create a multiline string literal in C#?
Here's what I have now:
string query = "SELECT foo, bar"
+ " FROM table"
+ " WHERE id = 42";
I know PHP has
<<
Chet
- 21,375
- 10
- 40
- 58
1397
votes
27 answers
How do I create multiline comments in Python?
How do I make multi-line comments? Most languages have block comment symbols like:
/*
*/
Dungeon Hunter
- 19,827
- 13
- 59
- 82
1397
votes
20 answers
How do I combine a background-image and CSS3 gradient on the same element?
How do I use CSS3 gradients for my background-color and then apply a background-image to apply some sort of light transparent texture?
Ronald
- 16,033
- 9
- 27
- 29
1397
votes
34 answers
How to kill a process running on particular port in Linux?
I tried to close the tomcat using ./shutdown.sh from tomcat /bin directory. But found that the server was not closed properly. And thus I was unable to restartMy tomcat is running on port 8080.
I want to kill the tomcat process running on 8080. I…
veer7
- 20,074
- 9
- 46
- 74
1395
votes
12 answers
How can I grep recursively, but only in files with certain extensions?
I'm working on a script to grep certain directories:
{ grep -r -i CP_Image ~/path1/;
grep -r -i CP_Image ~/path2/;
grep -r -i CP_Image ~/path3/;
grep -r -i CP_Image ~/path4/;
grep -r -i CP_Image ~/path5/; }
| mailx -s GREP email@domain.example
How…
Jasmine
- 15,375
- 10
- 30
- 48