What are the data types in go language?

The data type in Go language refers to the attribute of the value of a variable or expression. It is used to describe the types and limitations of data. It is divided into three types: "basic type", "composite type" and "other types" : 1. Basic types, including integers, floating point types, complex numbers, Boolean types and string types; 2. Composite types, including array types, slice types, structure types, interface types and function types; 3. Other types , including pointer types, channel types and dictionary types; each data type occupies a different amount of space in memory and corresponds to different operations and restrictions.

# Operating system for this tutorial: Windows 10 system, Dell G3 computer.

In the Go language, data type refers to the attribute of the value of a variable or expression, which is used to describe the types and limitations of data.

Data types in Go language can be divided into the following categories:

1. Basic types (basic data types):

   • Integer types: int, int8, int16, int32, int64, uint, uint8, uint16, uint32, uint64, uintptr.
   • Floating point type: float32, float64.
   • Plural type: complex64, complex128.
   • Boolean type: bool.
   • String type: string.

2. Composite type:

   • Array type: [size]Type.
   • Slice type: []Type.
   • Structure type: struct.
   • Interface type: interface{}.
   • Function type: func.

3. Other types:

   • Pointer type: *Type.
   • Channel type: chan Type.
   • Dictionary type: map[Key]Value.

Each data type occupies a different amount of space in memory and corresponds to different operations and restrictions. By using different data types, we can handle various types of data in our programs, such as integers, floating point numbers, logical values, strings, etc.

In addition, the Go language also supports custom data types, and new data types can be defined through the type keyword. For example:

type MyInt int  // 定义一个新的整型数据类型MyInt

Custom data types can improve the readability and maintainability of code in the program, and can also give the type specific behaviors and methods.

Understanding and correctly using different data types is the key to writing efficient and reliable Go programs. Depending on different needs, choosing the appropriate data type can improve the performance of the program and ensure the correct processing of data.

The above is the detailed content of What are the data types in go language?. For more information, please follow other related articles on the PHP Chinese website!