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How to crop an image in OpenCV using Python
...Suppose you load N images each is >1MP and you need only 100x100 region from the upper left corner.
Slicing:
X = []
for i in range(N):
im = imread('image_i')
X.append(im[0:100,0:100]) # This will keep all N images in the memory.
# Because they are still u...
How to revert a merge commit that's already pushed to remote branch?
...
from two numbers 8989ee0, 7c6b236, which one to go. How would I understand ?
– Arup Rakshit
May 13 '14 at 10:43
...
How to distinguish between left and right mouse click with jQuery
...ut I realized that was only because the alert() prevented the context menu from appearing. :( boo
– jinglesthula
Nov 28 '11 at 22:47
15
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Bamboo Vs. Hudson(a.k.a. Jenkins) vs Any other CI systems [closed]
... hosting. I'll either run it on a local server or on an Amazon instance.
From experience, it is generally cheaper to host your own CI server. But if you need to scale, Bamboo makes it easy to distribute your builds to additional local agents or scale out to Amazon via Elastic agents.
Also, thi...
How can I remove a key and its value from an associative array?
...e4");
To remove an element using the array key:
// To unset an element from array using Key:
unset($arr["key2"]);
var_dump($arr);
// output: array(3) { ["key1"]=> string(6) "value1" ["key3"]=> string(6) "value3" ["key4"]=> string(6) "value4" }
To remove element by value:
// remove an ...
How can a web application send push notifications to iOS devices? [closed]
...
as of 02/2016,FF,Chrome and Safari can register for push from webapp.
– Yvon Huynh
Feb 10 '16 at 9:56
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What is the documents directory (NSDocumentDirectory)?
...le.com/library/ios/technotes/tn2406/_index.html
The Apple sanctioned way (from the link above) is as follows:
// Returns the URL to the application's Documents directory.
- (NSURL *)applicationDocumentsDirectory
{
return [[[NSFileManager defaultManager] URLsForDirectory:NSDocumentDirectory inD...
JavaScript DOM remove element
...most browsers, there's a slightly more succinct way of removing an element from the DOM than calling .removeChild(element) on its parent, which is to just call element.remove(). In due course, this will probably become the standard and idiomatic way of removing an element from the DOM.
The .remove(...
How to measure time in milliseconds using ANSI C?
... clocks per second it doesn't matter what value it is, the resulting value from clock() / CLOCKS_PER_SEC will be in seconds(at least it should be). Dividing by 1000 turns that into milliseconds.
– David Young
Jul 18 '12 at 0:08
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How to find day of week in php in a specific timezone
...ce php 5.1.0 you can use date("N", $timestamp) to get 1..7 values starting from Monday. In the older versions you can use the trick (date("w", $timestamp) + 6) % 7 to get 0..6 values starting from Monday.
– oluckyman
Mar 23 '13 at 6:17
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