但也有一种类似于基于索引的for循环的方式。它使用to(end: Int, step: Int)方法，在每次迭代中将Rang...
for-yield与for-loop不同。它只是flatMap、map和withFilter函数组合的语法糖。同样在scala中最好不要使...
In some ways Scala reminds me of the Perl slogan, “There’s more than one way to do it,” and iterating over a collection provides some great examples of this. With the wealth of methods that are available on collections, it’s important to note that aforloop may not even be the b...
for循环用yield 关键字返回一个集合 while循环,while(){},do {}while() 个人学习code 代码语言:javascript 代码运行次数:0 运行 AI代码解释 复制 object IfAndLoopStatement { def main(args: Array[String]): Unit = { //for循环 for (i <- 1 to 10) { println(i) } // 打印1 到10 println(...
Read(取值)->Evaluation(求值)->Print(打印)->Loop(循环)。Scala解释器也被称为REPL,会快速编译Scala代码为字节码,然后交由JVM来执行。 1.2计算表达式: 在scala>命令行内,键入scala代码,解释器会直接返回结果给你。如果未指定变量来存放这个值,默认名称为res,而且会显示数据类型。如Int,Double,String等。
Scala - while Loop Scala - do-while Loop Scala - Nested Loops Scala - for Loop Scala - break Statement Scala - yield Keyword Scala Classes & Objects Scala - Classes & Objects Scala - Constructors Scala - Auxiliary Constructor Scala - Primary Constructor Scala - This Keyword Scala - Nested ...
for (int i = 0; i < doubleArray.length; i++) { doubleArray[i] = doubles.get(i); } // Option 2: Use enhanced for loop syntax (described below), along with // additional index variable. // Better performance but extraneous index value hanging around int index = 0; // Automatic ...
scala> def loop() : Int = loop loop: ()Int scala> bar(1,loop) res11: Int = 1 scala> bar(loop,1) 解析: 1、虽然 y 是 name, 每次调用的时候会被求值。但是,函数体内,没有调用到y. 2、x 是 value,对函数参数求值,并且只求一次。虽然后面没有用到x,但求值时产生了死循环。
·REPL:Read(取值)-> Evaluation(求值)-> Print(打印)-> Loop(循环)。scala解释器也被称为REPL,会快速编译scala代码为字节码,然后交给JVM来执行。·计算表达式:在scala>命令行内,键入scala代码,解释器会直接返回结果给你。如果你没有指定变量来存放这个值,那么值默认的名称为res,而且会显示结果的数据类型,比如Int...
if (startLoopWork) { // do something System.out.println(num + ":" + num2); } } } 虽然直接,但是意图表达的不是很直接,那么在内层就直接对sublist进行遍历吧: int anotherIndex = 0; for (Iterator<Integer> i = list.iterator(); i.hasNext();anotherIndex++) { ...