Scala, like many other languages following the functional programming paradigm, allows you to apply a functionpartially. What this means is that, when applying the function, you do not pass in arguments forallof
This chapter looks at two ways in which functions (and in fact methods) in Scala can comprise components of reuse within a software system. These two approaches are partial application of functions and Currying. The two approaches represent variations on a theme. In both cases they allow a ...
和其他遵循函数式编程范式的语言一样,Scala 允许部分应用一个函数。调用一个函数时,不是把函数需要的所有参数都传递给它,而是仅仅传递一部分,其他参数留空;这样会生成一个新的函数,其参数列表由那些被留空的参数组成。(不要把这个概念和偏函数混淆) 为了具体说明这一概念,回到上一章的例子:假想的免费邮件服务,...
执行以上代码,输出结果为: $ scalacTest.scala $ scalaTestTueDec1811:25:54CST2018---message1TueDec1811:25:54CST2018---message2TueDec1811:25:54CST2018---message3 Scala 函数
第21讲: 偏函数(Partiallyapplied function)实战详解 偏函数,也叫部分应用函数,就是调用的时候,只传入函数的部分参数。先举个例子就很容易明白了。object PartialAppliedFunction { def main(args: Array[String]): Unit = { val par function scala
Note thatCCis the fully applied type, e.g.Iterator[Int]; this is necessary in caseCChas no type parameters or has multiple parameters, e.g.BitSetorMap[String, Long]. Note thatAis identically(K, V)for maps. You can find the range of variation for these variables inNumbers.scalaforn,nn...
function, you can place one argument as a pre-defined argument that will use its values as arguments in the function call. As in our example, initialization of percentage method named ninth is made with an initial value of total marks argument defining it as apartially applied function. ...
Partially applied functions are used with collections, higher-order functions, and variable arguments. These functions can be combined with anonymous functions, default parameters, and curried functions for concise code. You can use this function in various contexts, like in higher-order functions, for...
Similarly, the total K > 10 g kg−1 and EC > 4 dS m−1 must be considered prudentially at risk for short-term plant damage when applied at high rates, according to the observation of Sullivan et al. [7] in trials on blueberry grown in pots. As a consequence, the composition ...
Integral and derivative isoconversional methods or model free kinetics (MFK) have been applied to the experimental data in order to evaluate the apparent activation energy, Ea, followed by the application of the appropriate reaction model. The bio-sourced system showed activation energy that is ...