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Returning a boolean from a Bash function
...; then echo "is directory"; else echo "nopes"; fi
Edit
From @amichair's comment, these are also possible
isdirectory() {
if [ -d "$1" ]
then
true
else
false
fi
}
isdirectory() {
[ -d "$1" ]
}
share
...
jQuery set radio button
...ng by ID anyway):
$('#' + newcol).prop('checked',true);
Here is a demo: http://jsfiddle.net/jasper/n8CdM/1/
Also, as of jQuery 1.6 the perferred method of altering a property is .prop(): http://api.jquery.com/prop
share
...
Response Content type as CSV
I need to send a CSV file in HTTP response. How can I set the output response as CSV format?
11 Answers
...
How do I lock the orientation to portrait mode in a iPhone Web Application?
...rget the browser with body[orient="landscape"] or body[orient="portrait"]
http://www.evotech.net/blog/2007/07/web-development-for-the-iphone/
However...
Apple's approach to this issue is to allow the developer to change the CSS based on the orientation change but not to prevent re-orientation com...
PHP array_filter with arguments
...Charles's solution using closures, you can actually find an example in the comments on the documentation page. The idea is that you create an object with the desired state ($num) and the callback method (taking $i as an argument):
class LowerThanFilter {
private $num;
function __co...
How to properly ignore exceptions
...th suppress(Exception):
# your code
Here's the commit that added it: http://hg.python.org/cpython/rev/406b47c64480
And here's the author, Raymond Hettinger, talking about this and all sorts of other Python hotness: https://youtu.be/OSGv2VnC0go?t=43m23s
My addition to this is the Python 2.7 e...
How to prevent browser page caching in Rails
...
Finally figured this out - http://blog.serendeputy.com/posts/how-to-prevent-browsers-from-caching-a-page-in-rails/ in application_controller.rb
After Rails 5:
class ApplicationController < ActionController::Base
before_action :set_cache_headers...
How do you decompile a swf file [closed]
...
This can also be done freely online:
http://www.showmycode.com/
EDIT A quick Google search turned up this list, which probably has all the tools you could possibly want (look at the comments as well): http://bruce-lab.blogspot.co.il/2010/08/freeswfdecompilers.h...
Summarizing multiple columns with dplyr? [duplicate]
...38 2.873786
#> 3: 3 2.854701 2.948718 2.951567 3.062678
Let's try to compare performance.
library(dplyr)
library(purrrlyr)
library(data.table)
library(bench)
set.seed(123)
n <- 10000
df <- data.frame(
a = sample(1:5, n, replace = TRUE),
b = sample(1:5, n, replace = TRUE),
c = sam...
How to switch a user per task or set of tasks?
...ook, or set them for a particular task.
- name: checkout repo
git: repo=https://github.com/some/repo.git version=master dest={{ dst }}
become: yes
become_user: some_user
You can use become_with to specify how the privilege escalation is achieved, the default being sudo.
The directive is in...