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Generic method multiple (OR) type constraint
Reading this , I learned it was possible to allow a method to accept parameters of multiple types by making it a generic method. In the example, the following code is used with a type constraint to ensure "U" is an IEnumerable<T> .
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#pragma pack effect
...64 or 4096 byte boundary buys you nothing above what the 8 byte boundary already gave you. You'll get the same performance from the CPU, while getting much worse cache utilization for the reasons outlined in that post.
– jalf
May 14 '15 at 18:30
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Why do I need an IoC container as opposed to straightforward DI code? [closed]
...eed to use an Inversion of Control (IoC) container. However, the more I read, the more pressure I feel from the community to use an IoC container.
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BLE（二）信道&数据包&协议栈格式 - 创客硬件开发 - 清泛IT社区，...
...访问行为，包括：
访问有关的权限（access permissions），Readable、Writeable以及Readable and writable；加密有关的权限（encryption permissions），Encryption required和No encryption required；认证有关的权限（authentication permissions），Authentication Requir...
What is the difference between String.slice and String.substring?
...y, and/or looking for short answer scroll to the bottom of the answer, and read the last two lines.if Not in a hurry read the whole thing.let me start by stating the facts:
Syntax:
string.slice(start,end)
string.substr(start,length)
string.substring(start,end)
Note #1: slice()==substring()
What it...
What is an EJB, and what does it do?
...ly a massive number of requests from various calling messages/processes
/threads, they are distributed across the available EJB instances in the pool first
and then queued. This means that if the number of incoming requests per second is
greater than the server can handle, we degrade gracefully -...
Using the “final” modifier whenever applicable in Java [closed]
... publication of fields and can avoid the need for synchronization on later reads. (Note that for an object reference, only the field reference is immutable - things that object reference refers to can still change and that affects the immutability.)
Final static fields - Although I use enums now fo...
Why do x86-64 instructions on 32-bit registers zero the upper part of the full 64-bit register?
In the x86-64 Tour of Intel Manuals , I read
3 Answers
3
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How do I convert an enum to a list in C#? [duplicate]
...uperfluous, and will mean extra copying. Enum.GetValues returns an array already, so you just have to do var values = (SomeEnum[])Enum.GetValues(typeof(SomeEnum))
– thecoop
Nov 9 '10 at 2:33
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How to store date/time and timestamps in UTC time zone with JPA and Hibernate
...that they transform dates to/from the current JVM timezone by default when reading and writing from/to the database.
I came up with a solution to this in Hibernate 3.5 by subclassing org.hibernate.type.TimestampType that forces these JDBC methods to use UTC instead of the local time zone:
public c...