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How do I push to GitHub under a different username?
...same pc, you can setup username and email locally inside a folder with git by removing -g flag of the config command:
git config user.name her_username
git config user.email her_email
Alternatively, if you push over https protocol, Github will prompt for username/password every time (unless you u...
How to iterate a loop with index and element in Swift
...ch { print($0, ":", $1) }
/*
prints:
0 : 5
1 : 4
2 : 3
3 : 2
4 : 1
*/
By using enumerated() and makeIterator(), you can even iterate manually on your Array. For example:
import UIKit
import PlaygroundSupport
class ViewController: UIViewController {
var generator = ["Car", "Bike", "Plane"...
force browsers to get latest js and css files in asp.net application
...
I solved this by tacking a last modified timestamp as a query parameter to the scripts.
I did this with an extension method, and using it in my CSHTML files. Note: this implementation caches the timestamp for 1 minute so we don't thras...
Ignore whitespace in HTML [duplicate]
...ut "hacking around" something. The layout should preferrably be controlled by the CSS, so specifying how the images are displayed should actually rather be in the CSS than in the HTML.
– Guffa
Apr 13 '10 at 10:56
...
How do I abort/cancel TPL Tasks?
...NewTask(Action method). Inside the StartNewTask method I create a new Task by: Task task = new Task(() => method()); task.Start();. So how can I manage the CancellationToken? I would also like to know if like Thread I need to implement a logic to check if there're some Tasks that are still hangin...
How do I import a Swift file from another Swift file?
... If a Swift target has a space in its name, you can import it by replacing the spaces with underscores in the import statement. "My Swift Class" becomes "My_Swift_Class".
– Cin316
May 3 '15 at 22:47
...
What is your single most favorite command-line trick using Bash? [closed]
...see all of your keyboard shortcuts listed? There are over 455 on Mac OS X by default.
105 Answers
...
Determine the data types of a data frame's columns
..., 1, 1, 2, 2, 4, 2, ...
To get a list of the columns' data type (as said by @Alexandre above):
map(mtcars, class)
gives a list of data types:
$mpg
[1] "numeric"
$cyl
[1] "numeric"
$disp
[1] "numeric"
$hp
[1] "numeric"
To change data type of a column:
library(hablar)
mtcars %>%
con...
How do I change tab size in Vim?
...l cause Vim to actually insert spaces (the number of them being controlled by tabstop) when you press tab; you might want to use softtabstop to make backspace work properly (that is, reduce indentation when that's what would happen should tabs be used, rather than always delete one char at a time).
...
What is the most effective way to get the index of an iterator of an std::vector?
...
I would prefer it - vec.begin() precisely for the opposite reason given by Naveen: so it wouldn't compile if you change the vector into a list. If you do this during every iteration, you could easily end up turning an O(n) algorithm into an O(n^2) algorithm.
Another option, if you don't jump aro...