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This article mainly introduces "what is the definition of Go language function". In daily operation, I believe that many people have doubts about what the definition of Go language function is. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the question of "what is the definition of GE language function?" Next, please follow the editor to study!

A function is a basic block of code used to perform a task.

The Go language has at least one main () function.

You can divide different functions by functions, and logically each function performs a specified task.

The function declaration tells the compiler the name of the function, the return type, and parameters.

The Go language standard library provides a variety of built-in functions that are available. For example, the len () function can take different types of parameters and return the length of that type. If we pass in a string, we return the length of the string, and if we pass in an array, we return the number of elements contained in the array.

Function definition

The definition format of Go language function is as follows:

Func function_name ([parameter list]) [return_types] {function body}

Function definition parsing:

Func: the function is declared by func

Function_name: the function name, argument list, and return value type constitute the function signature.

Parameter list: parameter list, the parameter is like a placeholder, when the function is called, you can pass the value to the parameter, this value is called the actual parameter. The parameter list specifies the parameter type, order, and number of parameters. Parameters are optional, that is, functions can also contain no parameters.

Return_types: returns the type, and the function returns a list of values. Return_types is the data type of the column value. Some features do not require a return value, in which case return_types is not required.

Function body: a collection of code defined by a function.

At this point, the study of "what is the definition of Go language function" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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