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Selecting only first-level elements in jquery
...
$("ul > li a")
But you would need to set a class on the root ul if you specifically want to target the outermost ul:
<ul class="rootlist">
...
Then it's:
$("ul.rootlist > li a")....
Another way of making sure you only have the root li elements:
$("ul > li a").no...
Wait for a process to finish
...
I found "kill -0" does not work if the process is owned by root (or other), so I used pgrep and came up with:
while pgrep -u root process_name > /dev/null; do sleep 1; done
This would have the disadvantage of probably matching zombie processes.
...
Difference between validate(), revalidate() and invalidate() in Swing GUI
... synchronized (getTreeLock()) {
invalidate();
Container root = getContainer();
if (root == null) {
// There's no parents. Just validate itself.
validate();
} else {
while (!root.isValidateRoot()) {
if (root.getCon...
Two versions of python on linux. how to make 2.7 the default
...on
cd /usr/bin
ls -l
Here you can see something like this
lrwxrwxrwx 1 root root 9 Mar 7 17:04 python -> python2.7
your default python2.7 is soft linked to the text 'python'
So remove the softlink python
sudo rm -r python
then retry the above command
ls -l
you can see ...
Why do people say that Ruby is slow? [closed]
...ctually done by software developed in C. e.g. Apache, Thin, Nginx, SQLite, MySQL, PostgreSQL, many parsing libraries, RMagick, TCP/IP, etc are C programs used by Ruby. Ruby provides the glue and the business logic.
What are your options as a Ruby
programmer if you want to deal with
this "sl...
docker error: /var/run/docker.sock: no such file or directory
... using boot2docker as every command passed into the boot2docker VM runs as root by default.
You're seeing the error when you're running as sudo because sudo doesn't have the DOCKER_HOST env set, only your user does.
You can confirm this by doing a:
$ env
Then a
$ sudo env
And looking for DOC...
Is there any difference between __DIR__ and dirname(__FILE__) in PHP?
...). This
directory name does not have a
trailing slash unless it is the root
directory. (Added in PHP 5.3.0.)
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Access-Control-Allow-Origin wildcard subdomains, ports and protocols
...IfModule mod_rewrite.c>
<IfModule mod_headers.c>
# Define the root domain that is allowed
SetEnvIf Origin .+ ACCESS_CONTROL_ROOT=yourdomain.com
# Check that the Origin: matches the defined root domain and capture it in
# an environment var if it does
RewriteEngine On
...
How to read a single character from the user?
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Tested on Win10 + Python 3.5： ERROR:root:'in <string>' requires string as left operand, not bytes Traceback (most recent call last): File "..\main.py", line 184, in wrapper result = func(*args, **kwargs) File "C:\GitHub\Python-Demo\demo\day_hello....
How can I setup & run PhantomJS on Ubuntu?
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On ubuntu 18.04 I get an error, that I should run it as root. With sudo it works: sudo npm install -g phantomjs-prebuilt
– rubo77
Jul 24 '18 at 17:04
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