参考自http://stackoverflow.com/questions/19478244/how-does-a-case-anonymous-function-really-work-in-scala http://www.scala-lang.org/files/archive/nightly/pdfs/ScalaReference.pdf http://docs.scala-lang.org/overviews/core/futures.html 在第三篇文档<Futures and P…

The basic functional cornerstones of Scala: immutable data types, passing of functions as parameters and pattern matching. 1. Basic Pattern Matching In Scala, your cases can include types, wildcards, sequences, regular expressions, and so forth. scal…

Scala中的match, 比起以往使用的switch-case有著更強大的功能, 1. 傳統方法 def toYesOrNo(choice: Int): String = choice match { case 1 => "yes" case 0 => "no" case _ => "error" } // toYesOrNo(1)=>"yes" // toYesOrNo(0)=>"n…

scala语言的一大重要特性之一就是模式匹配.在我看来,这个怎么看都很像java语言中的switch语句,但是,这个仅仅只是像(因为有case关键字),他们毕竟是不同的东西,switch在java中,只能是用在函数体类的,且需要结合break使用.但是,在scala语言中,pattern matching除了有case关键字,其他,似乎和java又有很多甚至完全不同的东西. scala在消息处理中为模式匹配提供了强大的支持! 下面看看模式匹配的英文定义: A pattern match incl…

from: Working with Scala's XML Support 虽然这个guy炒鸡罗嗦,但是还是讲到我要的那句话:  Because Scala doesn't support XML patterns with attributes. scala的模式匹配模式根本就不支持 属性 还是老老实实用XPath吧 XML is probably one of Scala's most controversial language features (right behind unrest…

Symbols of String Pattern Matching in Introduction to Algorithms. As it's important to be clear when discussing the problem of string matching, we can use the meticulous symbols used in Introduction to Algorithms. Text: $T[1, ..., n]$. Pattern: $P[1,…

一:匿名函数 (在php5.3.0 或以上才能使用) php中的匿名函数(Anonymous functions), 也叫闭包函数(closures), 允许指定一个没有名称的函数.最常用的就是回调函数的参数值.(http://php.net/manual/zh/functions.anonymous.php) 匿名函数的定义: $closureFunc = function(){....}; eg: 把匿名函数赋值给变量,通过变量来调用 $closureFunc = function($str…

Two dimensional pattern matching. Details may be added later.... Corresponding more work can be found in Pattern Matching and Text Compression Algorithm, Maxime Crochemore, Thierry Lecroq. Let's enjoy the code first: #define REHASH(a, b, h) (((h - a…

Pattern matching in functional programming languages is a way to break up expressions into individual cases. We are going to go through how to pattern match in PureScript with simple patterns, guards, array patterns and record patterns. greater :: In…

匿名函数(Anonymous functions),也叫闭包函数(closures),允许 临时创建一个没有指定名称的函数.最经常用作回调函数(callback)参数的值.当然,也有其它应用的情况. 创建闭包 Example #1 匿名函数变量赋值示例(http://laravelacademy.org/post/4341.html) <?php $fun = function($name){ printf("Hello %s\r\n",$name); }; echo $fun(…