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An example of how to use getopts in bash
...) { echo "Usage: $0 [-s <45|90>] [-p <string>]" 1>&2; exit 1; }
while getopts ":s:p:" o; do
case "${o}" in
s)
s=${OPTARG}
((s == 45 || s == 90)) || usage
;;
p)
p=${OPTARG}
;;
*)
us...
Couldn't connect to server 127.0.0.1:27017
... because there is an old lock file.
If you are not and were not running with journaling, remove the lock file, run repair, and start mongodb again.
If you are or were running with journaling turned on, see the relevant Mongo DB docs. Note that they say "If you are running with Journaling you shou...
UITableView with fixed section headers
Greets,
I'm reading that the default behaviour of UITableView is to pin section header rows to the top of the table as you scroll through the sections until the next section pushes the previos section row out of view.
...
What do (lambda) function closures capture?
Recently I started playing around with Python and I came around something peculiar in the way closures work. Consider the following code:
...
Image inside div has extra space below the image
... bigger than the height of the img ? There is a gap below the image, but it doesn't seems to be a padding/margin.
9 Answ...
How to remove spaces from a string using JavaScript?
...
This?
str = str.replace(/\s/g, '');
Example
var str = '/var/www/site/Brand new document.docx';
document.write( str.replace(/\s/g, '') );
Update: Based on this question, this:
str = str.replace(/\s+/g, '');
is a better solution. It produces the same result, but it does it fas...
How to trace the path in a Breadth-First Search?
...path
# enumerate all adjacent nodes, construct a new path and push it into the queue
for adjacent in graph.get(node, []):
new_path = list(path)
new_path.append(adjacent)
queue.append(new_path)
print bfs(graph, '1', '11')
Another approach would...
ASP.NET MVC - passing parameters to the controller
I have a controller with an action method as follows:
10 Answers
10
...
Read values into a shell variable from a pipe
...ke this:
echo "hello world" | { read test; echo test=$test; }
or even write a function like this:
read_from_pipe() { read "$@" <&0; }
But there's no point - your variable assignments may not last! A pipeline may spawn a subshell, where the environment is inherited by value, not by refer...
Filter element based on .data() key/value
Say I have 4 div elements with class .navlink , which, when clicked, use .data() to set a key called 'selected' , to a value of true :
...