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This article shows you how to use lambda expressions in Clover 11. The content is concise and easy to understand. It will definitely brighten your eyes. I hope you can get something through the detailed introduction of this article.

First of all, this lambda is the Roman letter λ, and the lambda expression is the λ expression. In mathematics, there is a concept called λ calculus, one of which is λ expression.

Consider the common representation of mathematical functions:

F (x) = 2x + 1

According to the rules of λ expression, it can be written as follows:

λ x. (2x+1)

This expression can be read as "for the parameter x _ 2x _ 1. Here Lambda, λ, only expresses the concept of" function "in mathematics.

Various programming languages have also introduced λ (lambda) expressions. For example:

C # language: (X) = > {return 2xroom1;}

Java language: (X)-> {return 2xroom1;}

Lambada expressions have also been introduced in Clippers 11.

[] (int x)-> int {return 2 * x + 1;}

For programmers, lambda expressions provide a way to implement unnamed functions.

Nameless annoyance

Lambda expressions do not need to define a function (name), which is a convenience in most scenarios, but it can also cause some annoyance, such as recursive calls. Because there is no function name, how to call yourself becomes a problem.

Of course, this problem can be solved. Here, take the factorial as an example, and go directly to the code:

Function factorial =

[&] (int n) {

If (n < 2) return 1

Return n * factorial (n-1)

}

Cout

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