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Rails Observer Alternatives for 4.0
... I've not used Notifications much but I'd say Wisper has a nicer API and features such as 'global subscribers', 'on prefix' and 'event mapping' which Notifications does not. A future release of Wisper will also allow async publishing via SideKiq/Resque/Celluloid. Also, potentially, in futu...
Why Java needs Serializable interface?
...lization support of this form makes the class internals part of the public API (which is why javadoc gives you the persisted forms of classes).
For long-term persistence, the class must be able to decode this form, which restricts the changes you can make to class design. This breaks encapsulation....
HTTP GET with request body
...t this is also common practice: The popular ElasticSearch engine's _search API recommends GET requests with the query attached in a JSON body. As a concession to incomplete HTTP client implementations, it also allows POST requests here.
– Christian Pietsch
Oct ...
START_STICKY and START_NOT_STICKY
...ntation.
Source: http://android-developers.blogspot.com.au/2010/02/service-api-changes-starting-with.html
The key part here is a new result code returned by the function,
telling the system what it should do with the service if its process
is killed while it is running:
START_STICKY is basically th...
jQuery $(document).ready and UpdatePanels?
...e() any more. It has been superseded by jQuery.on() which is the preferred API to use. delegate() is simply a wrapper for a specific use of on(), and it's possible that it may become deprecated in the future. My previous comment mentioning delegate() was written over a year ago when jQuery 1.7 (whic...
How can I run code on a background thread on Android?
...
Note: Requires API level 11
– friederbluemle
Nov 25 '15 at 14:06
9
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How do I retrieve an HTML element's actual width and height?
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Reference:
.offsetHeight: https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/offsetHeight
.offsetWidth: https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/offsetWidth
.getBoundingClientRect(): https://developer.mozilla.org/en-US/docs/Web/API/Element/getBoundingClientRect
...
Accessing JPEG EXIF rotation data in JavaScript on the client side
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You can use the exif-js library in combination with the HTML5 File API: http://jsfiddle.net/xQnMd/1/.
$("input").change(function() {
var file = this.files[0]; // file
fr = new FileReader; // to read file contents
fr.onloadend = function() {
// get EXIF data
...
Fragment Inside Fragment
... current versions of the Android Support package -- or native fragments on API Level 17 and higher -- you can nest fragments, by means of getChildFragmentManager(). Note that this means that you need to use the Android Support package version of fragments on API Levels 11-16, because even though the...
Use of *args and **kwargs [duplicate]
... much about Foo. This can be quite convenient if you are programming to an API which might change. MyFoo just passes all arguments to the Foo class.
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