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What's the (hidden) cost of Scala's lazy val?
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Yes - I should have paid more attention to what I was posting!
– oxbow_lakes
Jun 16 '10 at 9:25
8
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Why does this Java program terminate despite that apparently it shouldn't (and didn't)?
...le. To achieve immutability, you simply need to mark x and y final.
As a side note and as already mentioned, synchronized(this) {} can be treated as a no-op by the JVM (I understand you included it to reproduce the behaviour).
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Should I use a data.frame or a matrix?
...es can make your code far more efficient than using data frames, often considerably so. That is one reason why internally, a lot of R functions will coerce to matrices data that are in data frames.
Data frames are often far more convenient; one doesn't always have solely atomic chunks of data lying...
ZeroMQ的学习和研究（PHP代码实例） - C/C++ - 清泛网 - 专注C/C++及内核技术
...象为统一的 API 接口。
二、ZMQ 是什么？
阅读了 ZMQ 的 Guide 文档后，我的理解是，这是个类似于 Socket 的一系列接口，他跟 Socket 的区别是：普通的 socket 是端到端的（1:1的关系），而 ZMQ 却是可以N：M 的关系，人们对 BSD 套接字...
What is the difference between JDK dynamic proxy and CGLib?
...t would stop these libraries from allowing to subclass your class and override your methods.
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Updating packages in Emacs
...versions afterwards.
You may also want to take a look at Carton which provides a more convenient way to manage your packages by declaring them in a dedicated file, and includes a convenient command line client to automatically install and upgrade packages declared in this way.
The order of packa...
What is a .snk for?
...ts of
a simple text name, version number,
and culture information (if
provided)—plus a public key and a
digital signature.
The SNK contains a unique key pair - a private and public key that can be used to ensure that you have a unique strong name for the assembly. When the assembly is strongly-n...
Purpose of buildscript block in Gradle
...der to understand the rest of the build script. That's why you have to provide this information in a separate channel (the buildScript block). Technically speaking, Gradle needs this information in order to compile and evaluate the rest of the build script. What happens under the hood is that Gradle...
ByteBuffer.allocate() vs. ByteBuffer.allocateDirect()
...at any
time. Arrays are objects in Java, and
the way data is stored inside that
object could vary from one JVM
implementation to another.
For this reason, the notion of a
direct buffer was introduced. Direct
buffers are intended for interaction
with channels and native I/O routine...
What is the difference between RegExp’s exec() function and String’s match() function?
...xec which is more powerful as it is good for getting captures, but if you did use match when capturing, see that it shows captures when the regex is not global, but doesn't show captures when the regex is global.
> "azb".match(/a(z)b/);
[ "azb", "z" ]
> "azb".match(/a(z)b/g);
[ "azb" ]
>...