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Capture HTML Canvas as gif/jpg/png/pdf?
...avigate to an image with a green square in the middle of it, but I haven't tested.
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Is JavaScript a pass-by-reference or pass-by-value language?
...d';
var string2 = 'Goodbye world';
Again, we pick a favorite.
var favoriteString = string1;
Both our favoriteString and string1 variables are assigned to 'Hello world'. Now, what if we want to change our favoriteString??? What will happen???
favoriteString = 'Hello everyone';
console.log(favor...
How to get the instance id from within an ec2 instance?
...documentation on the subject.
Run:
wget -q -O - http://169.254.169.254/latest/meta-data/instance-id
If you need programatic access to the instance ID from within a script,
die() { status=$1; shift; echo "FATAL: $*"; exit $status; }
EC2_INSTANCE_ID="`wget -q -O - http://169.254.169.254/latest/me...
How to convert a PIL Image into a numpy array?
...
Open I as an array:
>>> I = numpy.asarray(PIL.Image.open('test.jpg'))
Do some stuff to I, then, convert it back to an image:
>>> im = PIL.Image.fromarray(numpy.uint8(I))
Filter numpy images with FFT, Python
If you want to do it explicitly for some reason, there are pi...
Detecting when a div's height changes using jQuery
... demo http://jsfiddle.net/aD49d/
$(function () {
var prevHeight = $('#test').height();
$('#test').attrchange({
callback: function (e) {
var curHeight = $(this).height();
if (prevHeight !== curHeight) {
$('#logger').text('height chan...
configure Git to accept a particular self-signed server certificate for a particular https remote
...IdVQIKvHok2P/u9tvTUQA==
-----END CERTIFICATE-----
This shall work (but I tested it only with single certificate).
Configure git to trust this certificate
$ git config --global http.sslCAInfo /home/javl/git-certs/cert.pem
You may also try to do that system wide, using --system instead of --glob...
Try-catch speeding up my code?
I wrote some code for testing the impact of try-catch, but seeing some surprising results.
5 Answers
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Performance of static methods vs instance methods
... Static methods can't be mocked, If you do TDD or even just unit testing this will hurt your tests a lot.
– trampster
Mar 24 '17 at 10:33
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How do I handle newlines in JSON?
...thing like .replace("\n", "\\n") should do the job fine!! For example, var test = [{"description":"Some description about the product. This can be multi-line text."}]; console.log(JSON.parse(test.replace(/\n/g, "\\n"))); will output the object perfectly fine to browser console as [{"description":"S...
What is the best way to iterate over a dictionary?
..., remember: using System.Linq; This is not incluted in fx. auto generated test classes.
– Tinia
Nov 24 '11 at 14:47
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