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What does `someObject.new` do in Java?
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It's the way to instantiate a non-static inner class from outside the containing class body, as described in the Oracle docs.
Every inner class instance is associated with an instance of its containing class. When you new an inner class from within its containing class it uses the thi...
使用虚拟现实和App Inventor进行实验 · App Inventor 2 中文网
...用程序，用于管理与 Cardboard 库的交互。具有 Java 和 Android 经验的开发人员可以将其用作指南，为 App Inventor 社区创建更丰富的 Cardboard 集成可能性。开发人员还应注意，刚刚发布的 Android 系统 7 (Nougat) 包含 Google 的 Daydream VR 软件...
How to name variables on the fly?
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Is there any reason why you didn't use paste0?
– BroVic
Jul 5 '18 at 15:11
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show 1 more comme...
What is the meaning of “non temporal” memory accesses in x86
...f the writes ineffective.
For this and similar situations, processors provide support for non-temporal write operations. Non-temporal in this context means the data will not be reused soon, so there is no reason to cache it. These non-temporal write operations do not read a cache line and then modi...
SQL Server Script to create a new user
...ember N'db_owner', N'NewAdminName'
END;
GO
Now, Logins are a bit more fluid than I make it seem above. For example, a Login account is automatically created (in most SQL Server installations) for the Windows Administrator account when the database is installed. In most situations, I just use tha...
GIT merge error “commit is not possible because you have unmerged files”
... and tried to push, I got the error push is not possible, at that point I did a "git pull" which made some files with conflict highlighted. I removed the conflicts but I don't know what to do from here..
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Default constructor vs. inline field initialization
...itialisers and constructors, the constructor code executes second and overrides an initialised value)
Initialisers are good when you always need the same initial value (like in your example, an array of given size, or integer of specific value), but it can work in your favour or against you:
If yo...
Current time formatting with Javascript
...here are no built-in methods allowing you to get localized strings like "Friday", "February", or "PM". You have to code that yourself. To get the string you want, you at least need to store string representations of days and months:
var months = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "...
Supabase扩展能实现实时推送吗？源码级Realtime能力分析 - App应用开发 - ...
...eat / presence_diff 等）
- payload：消息内容
- ref：消息引用 ID
核心交互流程
1. join：客户端加入频道（phx_join 事件）
2. heartbeat：每 30 秒发送心跳（phx_heartbeat 事件）
3. push：服务器推送数据（对应 Postgres Changes / Broadcast / Presence...
LISTAGG in Oracle to return distinct values
... 5 Jack I need to select col1 and the LISTAGG of col2(column 3 is not considered). While i do that i will get something like this as the result od LISTAGG :->[2,2,3,4,5] I need to remove the duplicate'2' here.I Need only the distinct values of col2 against col1.
– Priyanth
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