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Can PNG image transparency be preserved when using PHP's GDlib imagecopyresampled?
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edited Jan 27 '14 at 20:54
Brooks
2,09222 gold badges1818 silver badges2525 bronze badges
answered Aug...
How to get the return value from a thread in python?
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wim
241k7070 gold badges435435 silver badges577577 bronze badges
answered Nov 13 '19 at 3:18
Ramarao AmaraRamarao Amara
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How to wait 5 seconds with jQuery?
I'm trying to create an effect where the page loads, and after 5 seconds, the success message on the screen fades out, or slides up.
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How to pipe list of files returned by find command to cat to view all the files
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15 Answers
15
Active
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Check if an array is empty or exists
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544
if (typeof image_array !== 'undefined' && image_array.length > 0) {
// the arra...
How can I convert an RGB image into grayscale in Python?
...e('greyscale.png')
Using matplotlib and the formula
Y' = 0.2989 R + 0.5870 G + 0.1140 B
you could do:
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.image as mpimg
def rgb2gray(rgb):
return np.dot(rgb[...,:3], [0.2989, 0.5870, 0.1140])
img = mpimg.imread('image.p...
Windows batch: echo without new line
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Nicholas DiPiazza
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answered Aug 18 '11 at 10:05
arneparnep
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PHPUnit: assert two arrays are equal, but order of elements not important
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15 Answers
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Active
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Python Requests and persistent sessions
I am using the requests module (version 0.10.0 with Python 2.5).
I have figured out how to submit data to a login form on a website and retrieve the session key, but I can't see an obvious way to use this session key in subsequent requests.
Can someone fill in the ellipsis in the code below or sug...
How to play a notification sound on websites?
...gt;
Browser support
Edge 12+, Firefox 20+, Internet Explorer 9+, Opera 15+, Safari 4+, Chrome
Codecs Support
Just use MP3
Old solution
(for legacy browsers)
function playSound(filename){
var mp3Source = '<source src="' + filename + '.mp3" type="audio/mpeg">';
var oggSource = '<sourc...