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What is meant by the term “hook” in programming?
...ipt to modify that element, or "hook in" to the page document. (this is stretching the meaning, but it is commonly used and worth mentioning)
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What are the differences between Abstract Factory and Factory design patterns?
...le the desired object
instantiation.
The quote assumes that an object is calling its own factory method here. Therefore the only thing that could change the return value would be a subclass.
The abstract factory is an object that has multiple factory methods on it. Looking at the first half of your...
HTML5 Canvas Resize (Downscale) Image High Quality?
....width = img.width;
imgCV.height = img.height;
var imgCtx = imgCV.getContext('2d');
imgCtx.drawImage(img, 0, 0);
return downScaleCanvas(imgCV, scale);
}
// scales the canvas by (float) scale < 1
// returns a new canvas containing the scaled image.
function downScaleCanvas(cv, sca...
Which characters are illegal within a branch name?
...t least one /. This enforces the presence of a category like heads/, tags/ etc. but the actual names are not restricted. If the --allow-onelevel option is used, this rule is waived.
They cannot have two consecutive dots .. anywhere.
They cannot have ASCII control characters (i.e. bytes whose value...
How to append one file to another in Linux from the shell?
...
you need to ... chmod 777 /etc/default/docker to give yourself write permissions on that file - be sure to restore the old file permissions once done
– danday74
Mar 9 '16 at 18:54
...
How to set an iframe src attribute from a variable in AngularJS
... AngularJS, to prevent security vulnerabilities such as XSS, clickjacking, etc. it's enabled by default in Angular 1.2.
You can disable it completely, but it's not recommended
angular.module('myAppWithSceDisabledmyApp', [])
.config(function($sceProvider) {
$sceProvider.enabled(false);
...
Rails 3 check if attribute changed
...
Check out ActiveModel::Dirty (available on all models by default). The documentation is really good, but it lets you do things such as:
@user.street1_changed? # => true/false
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C/C++ NaN constant (literal)?
... Indeed, it's an option if you need obfuscation but not portability. Personally, I prefer portability without obfuscation, so I won't suggest it myself.
– Mike Seymour
May 22 '13 at 12:26
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Python Dictionary to URL Parameters
...unexpected results if your data includes ampersands, equals, hash symbols, etc.
– Jamie Cockburn
May 22 '17 at 10:26
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How do I run multiple instances of Android Studio
...open project in".
Now open the other (2nd) project with File -> Open... etc.
You will now be asked if you want to open a new window or replace what you already have. Select New Window.
Screenshots:
Older versions:
Go to Settings -> General -> Project opening.
Check 'Confirm wi...