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This article mainly introduces "what are the basic data types of Go language". In daily operation, I believe that many people have doubts about the basic data types of GE language. 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 doubts about "what are the basic data types of Go language?" Next, please follow the editor to study!

Go language data type

The Go language divides data types into four categories: Basic Types (basic type), Aggregate Types (compound type), Reference Types (reference type), and Interface Types (interface type).

Basic types include: numbers, strings, and Boolean types. Boolean values can only be constant true or false. Numeric types support integers and floats, as well as plural numbers, where bits are operated with complements.

Compound data types include: arrays and structures express more complex data structures by combining simple types.

Reference types include: pointer, slice, map, channel, interface, and function type. When you declare a variable of a reference type, the variable you create is called a header value. Technically speaking, a string is also a reference type. The header value created by each reference type contains a pointer to the underlying data structure. Each reference type also contains a unique set of fields for managing the underlying data structure. Because header values are designed for replication, you never need to share a value of a reference type. The header value contains a pointer, so passing a copy of the value of the reference type through replication is essentially sharing the underlying data structure.

Integers

We can use signed or unsigned integers in the program, and can specify the desired integer size. Why should we specify the size you might require? well, imagine that you are trying to optimize the memory utilization of the program. If you know that a number will not exceed a specific value, you can choose a size that fits that value:

We can create a new integer variable by typing the size of uint or int appended to the end of the int. If we want an 8-bit unsigned integer, it will look like var myint uint8.

It should be noted that if you try to assign an int a larger value than it can handle, that is:

Var myint int8

Myint = 2500

The Go compiler will not be able to run or build the program and will output a 2500 overflow of the factual int8. However, if you want to overflow integers at run time, you may start to see strange results. For example, try to run this program and check the output.

Type conversion

When it comes to using multiple variables with different data types, you usually have to convert various integer variables to int. This will handle the conversion from uint8 and int16 to standard 32-or 64-bit signed int, from which you will be able to perform addition, multiplication, and subtraction.

Floating point number

They come in two different sizes, either float32, float64 and allow you to handle large amounts of data that cannot be contained in standard int64 data types. The range limit of floating point numbers can be found in the math package. The constant math.MaxFloat32 represents the maximum value that float32 can represent, which is about 3.4e38; the corresponding math.MaxFloat64 constant is about 1.8e308. The minimum values that can be expressed by them are approximately 1.4e-45 and 4.9e-324 respectively.

Float32 IEEE-754 32-bit floating point number.

Float64 IEEE-754 64-bit floating-point number.

Float is converted to int.

If you want to convert integers to floating-point numbers or floating-point numbers to int, you can do so by converting variables to the desired data type.

Plural

There is another numeric data type that is often ignored, the plural data type. These are very similar to floating-point data types and come in two different sizes, and you can choose complex64 or complex128.

Complex64 32-bit real and imaginary numbers.

Complex128 64-bit real and imaginary numbers.

Boolean

Let's see how to use it in one of our Go programs:

Var amazing bool

Amazing = true

If amazing {

SubscribeToChannel ()

}

What if we want to do some Boolean logic in the program? All right, use the | and & & operators.

Constant

Constants are our final basic data type in the Go language. They allow us to specify immutable values that will not change during program execution.

Const meaningOfLife = 42

At this point, the study of "what are the basic data types of the Go language" 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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