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Zoom in on a point (using scale and translate)
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I'm using the Canvas API, but it doesn't have a direct multiply() API. Instead, I've been doing resetTransform(), then applying the "zoom" translation, scaling, undoing the zoom translation, and then applying the actual desired translation. This ...
jQuery - prevent default, then continue default
...vior, then do my additional processing (it's basically calling Google Maps API and adding a few hidden fields to the form) -- and then I need the form to submit.
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When do items in HTML5 local storage expire?
...s completely up to the user.
https://developer.mozilla.org/en-US/docs/Web/API/Window/localStorage
Of course, it's possible that something your application stores on the client may not be there later. The user can explicitly get rid of local storage, or the browser may run into space considerations...
Concatenating null strings in Java [duplicate]
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This is behavior specified in the Java API's String.valueOf(Object) method. When you do concatenation, valueOf is used to get the String representation. There is a special case if the Object is null, in which case the string "null" is used.
public static Strin...
doGet and doPost in Servlets
...fe). So I would strongly recommend to learn a bit more about basic Java SE API using the Oracle tutorials (check the chapter "Trails Covering the Basics") and how to use JSP/Servlets the right way using those tutorials.
See also:
Our servlets wiki page
Java EE web development, where do I start an...
When to use IList and when to use List
... very strongly disagree about Point #2, especially if this is at a service/api boundary. Returning modifiable collections can give the impression that the collections are "live" and calling methods like Add() and Remove() may have effects beyond just the collection. Returning a read-only interface...
Does Swift have access modifiers?
...l code in a class must reside inside functions that are part of the public API, I think that's quite limiting. On the other hand, having a specified public API allows the implementation to change (including use of private methods) without disrupting consumers. If someone 'needs' to use an internal...
Initialising mock objects - MockIto
...y(ArticleListener.class));
}
}
Pros: You clearly demonstrate how your api works (BDD...)
Cons: there is more boilerplate code. (The mocks creation)
My recommandation is a compromise. Use the @Mock annotation with the @RunWith(MockitoJUnitRunner.class), but do not use the @InjectMocks :
@RunWit...
Android: Difference between Parcelable and Serializable?
...pose serialization mechanism. This class (and the corresponding Parcelable API for placing arbitrary objects into a Parcel) is designed as a high-performance IPC transport. As such, it is not appropriate to place any Parcel data in to persistent storage: changes in the underlying implementation of a...
BIO与NIO、AIO的区别(这个容易理解) - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
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三、AIO
与NIO不同，当进行读写操作时，只须直接调用API的read或write方法即可。这两种方法均为异步的，对于读操作而言，当有流可读取时，操作系统会将可读的流传入read方法的缓冲区，并通知应用程序；对于写操作而言，当...