无,其职能比仅仅得到<代码>int foo的价值还要多。 一项职能可以有内效果<>,例如分配记忆或开立档案。 此外,C或C++的职能不一定要退还价值。
如果你说“一个没有直接可用价值的变量”,那么你可以认为它是一种可变的变量,具有功能。
例如,用功能是头等物体的语文,你可以把功能作为参数传递给一种功能。
此外,在C中,你可以把职能点作为理由。
没有任何职能用于将编码分解成合乎逻辑的章节,以便重新使用和改进可读性。 使用变数来保存数据。
www.un.org/Depts/DGACM/index_spanish.htm 它取决于“弹性变量”的语言和含义。
例如,在Schala,可以界定一个抽象变量:
trait X {
val y: Int
}
而变数甚至可能“发挥职能”!
trait MyMath[T] {
// abstract
val square: (T) => T
}
object IntegerMath extends MyMath[Int] {
// concrete value (implementation) given to [previously-]abstract variable
val square = (i: Int) => i * i
}
IntegerMath.square(2) // 4
因此,......“取决于”。 然而,必须提供
C#支持以下概念:。 如果没有执行,
如果不提供执行方法,那么在汇编时间就删除了这种方法所用的方法和所有电话。
There are many more different kinds of programming languages -- some without side-effects (gasp) -- and these really should be at least mentioned to not be auto-boxed (lame Java pun) into a certain way (C/C++ e.g.) of thinking -- especially when talking about language design theory.
幸福 co。
页: 1 一项职能不仅仅是一个抽象的变量。
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