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Search and replace in bash using regular expressions
...'s are processed in order. Also, the g flag for the expression will match all occurrences in the input.
You can also pick your favorite tool using this method, i.e. perl, awk, e.g.:
echo "$MYVAR" | perl -pe 's/[a-zA-Z]/X/g and s/[0-9]/N/g'
This may allow you to do more creative matches... For ...
How to check if a string “StartsWith” another string?
...pt 6's String.prototype.startsWith() method, but it's not yet supported in all browsers. You'll want to use a shim/polyfill to add it on browsers that don't support it. Creating an implementation that complies with all the details laid out in the spec is a little complicated. If you want a faithful ...
What should be the values of GOPATH and GOROOT?
I'm trying to install doozer like this:
18 Answers
18
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HTTP GET request in JavaScript?
...ndle the response inside an event handler.
function httpGetAsync(theUrl, callback)
{
var xmlHttp = new XMLHttpRequest();
xmlHttp.onreadystatechange = function() {
if (xmlHttp.readyState == 4 && xmlHttp.status == 200)
callback(xmlHttp.responseText);
}
xml...
What is the “-->” operator in C++?
...old value and 0 ..." to make it clearer. But this is nitpicking anyway. We all know what is meant.
– Johannes Schaub - litb
Jan 30 '10 at 17:42
38
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What is the best way to conditionally apply attributes in AngularJS?
...
I am using the following to conditionally set the class attr when ng-class can't be used (for example when styling SVG):
ng-attr-class="{{someBoolean && 'class-when-true' || 'class-when-false' }}"
The same approach should work for other attribute type...
How to get the start time of a long-running Linux process?
... like this command:
ps -eo pid,lstart,cmd
The above command will output all processes, with formatters to get PID, command run, and date+time started.
Example (from Debian/Jessie command line)
$ ps -eo pid,lstart,cmd
PID CMD STARTED
1 Tue Jun 7 01...
Decode HTML entities in Python string?
...p 3, but it contains HTML entities which Beautiful Soup 3 doesn't automatically decode for me:
6 Answers
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How to avoid Python/Pandas creating an index in a saved csv?
...
98
There are two ways to handle the situation where we do not want the index to be stored in csv f...
quick random row selection in Postgres
... make It sense to use a N less than SELECT COUNT(*)?, I mean, not use all the values in the table but only a part of them?
– Juan
Mar 14 '11 at 11:00
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