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What does git push -u mean?
...om, e.g. your GitHub repo. The -u option automatically sets that upstream for you, linking your repo to a central one. That way, in the future, Git "knows" where you want to push to and where you want to pull from, so you can use git pull or git push without arguments. A little bit down, this articl...
Quick-and-dirty way to ensure only one instance of a shell script is running at a time
...oes a PID into it. This serves as a protection if the process is killed before removing the pidfile:
LOCKFILE=/tmp/lock.txt
if [ -e ${LOCKFILE} ] && kill -0 `cat ${LOCKFILE}`; then
echo "already running"
exit
fi
# make sure the lockfile is removed when we exit and then claim it
tra...
Link vs compile vs controller
... create a directive, you can put code into the compiler, the link function or the controller.
6 Answers
...
How do I declare a namespace in JavaScript?
...
The important point is to be religious about expanding no further than the one root variable. Everything must flow from this.
– annakata
May 19 '09 at 8:54
...
How can jQuery deferred be used?
...che = {};
function getData( val ){
// return either the cached value or jqXHR object wrapped Promise
return $.when(
cache[ val ] ||
$.ajax('/foo/', {
data: { value: val },
dataType: 'json',
success: function( resp ){
cach...
What is a “Bitmap heap scan” in a query plan?
..."Bitmap heap scan", I know this often happens
when I execute a query with OR in the condition.
1 Answer
...
Why does [5,6,8,7][1,2] = 8 in JavaScript?
...tion are not a delimited list of operands, but a single expression.
Read more about the comma operator here.
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Passing Data between View Controllers
...t I would try and give a better answer to help out people starting in the world of iOS like me.
I hope this answer is clear enough for people to understand and that I have not missed anything.
Passing Data Forward
Passing data forward to a view controller from another view controller. You would u...
Find all files in a directory with extension .txt in Python
How can I find all the files in a directory having the extension .txt in python?
26 Answers
...
What does status=canceled for a resource mean in Chrome Developer Tools?
...r problem where Chrome was canceling requests to load things within frames or iframes, but only intermittently and it seemed dependent on the computer and/or the speed of the internet connection.
This information is a few months out of date, but I built Chromium from scratch, dug through the source...