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Collection versus List what should you use on your interfaces?
... question as to why not List<T>, The reasons are future-proofing and API simplicity.
Future-proofing
List<T> is not designed to be easily extensible by subclassing it; it is designed to be fast for internal implementations. You'll notice the methods on it are not virtual and so cannot ...
What is the best way to tell if a character is a letter or number in Java without using regexes?
... more than a-Z0-9 !!! refer to the doc here docs.oracle.com/javase/7/docs/api/java/lang/…
– fl0w
Mar 6 '19 at 16:49
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TCP: can two different sockets share a port?
...entirely true of the server side. However the structure of the BSD Sockets API means that outgoing client-side ports must be unique in practice, because the bind() operation precedes the connect() operation, even implicitly.
– Marquis of Lorne
Jun 21 '12 at 10:...
整合phpcms v9和discuz X3.2实现同步登陆、退出免激活 - 更多技术 - 清泛网...
...栏中，各项参数配置如下：
是否启用：是
Ucenter api 地址：http：//localhost/discuz/uc_server （必填，蓝色字体部分为 Discuz! 安装路径，视实际情况而定，最后不要带斜线）
Ucenter api IP：（选填，一般不用填写，遇到无法同...
What's an appropriate HTTP status code to return by a REST API service for a validation failure?
...enever I encounter a validation failure in my Django / Piston based REST API application.
Having had a look at the HTTP Status Code Registry
I'm not convinced that this is an appropriate code for a validation failure, what do y'all recommend?
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Can Java 8 code be compiled to run on Java 7 JVM?
...res new JVM features.
Lambdas could run on Java 7 as-is, if the necessary API classes just would exist there. The invokedynamic instruction exists on Java 7, but it would have been possible to implement lambdas so that it generates the lambda classes at compile time (early JDK 8 builds did it that ...
Get screen width and height in Android
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@digiphd wouldn't Parang's code work on all API versions? All methods were introduced before API level 8 and I didn't find them deprecated at the android dev site.
– Sufian
May 22 '13 at 12:52
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What are the reasons why Map.get(Object key) is not (fully) generic
...liberal in what you accept from others, but not too liberal. This idiotic API means that you can't tell the difference between "not in the collection" and "you made a static typing mistake". Many thousands of lost programmer hours could have been prevented with get : K -> boolean.
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How to check if an activity is the last one in the activity stack for an application?
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UPDATE (Jul 2015):
Since getRunningTasks() get deprecated, from API 21 it's better to follow raukodraug answer or Ed Burnette one (I would prefer second one).
There's possibility to check current tasks and their stack using ActivityManager.
So, to determine if an activity is the last o...
How to create a custom-shaped bitmap marker with Android map API v2 [duplicate]
I am developing an Android Application where I'm using Google Map API v2. I need to show the user location on a map with custom markers.
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