Datatype in Go
- Data types specify the type of data that a valid Go variable can hold.
- Basic type: Numbers, strings, and Booleans come under this category.
- Aggregate type: Array and structs come under this category.
- Reference type: Pointers, slices, maps, functions, and channels come under this category.
- Interface type
*In Go language, numbers are divided into three sub-categories that are: Integers: In Go language, both signed and unsigned integers are available in four different sizes
| Data Type | Description |
|---|---|
| int8 | 8-bit signed integer |
| int16 | 16-bit signed integer |
| int32 | 32-bit signed integer |
| int64 | 64-bit signed integer |
| uint8 | 8-bit unsigned integer |
| uint16 | 16-bit unsigned integer |
| uint32 | 32-bit unsigned integer |
| uint64 | 64-bit unsigned integer |
| int | Both int and uint contain same size, either 32 or 64 bit. |
| uint | Both int and uint contain same size, either 32 or 64 bit. |
| rune | It is a synonym of int32 and also represent Unicode code points. |
| byte | It is a synonym of uint8. |
| uintptr | It is an unsigned integer type. Its width is not defined, but its can hold all the bits of a pointer value. |
Floating-Point Numbers: In Go language, floating-point numbers are divided into two categories
| Data Type | Description |
|---|---|
| float32 | 32-bit IEEE 754 floating-point number |
| float64 | 64-bit IEEE 754 floating-point number |
==Complex Numbers==: The complex numbers are divided into two parts are shown in the below table.
| Data Type | Description |
|---|---|
| complex64 | Complex numbers which contain float32 as a real and imaginary component. |
| complex128 | Complex numbers which contain float64 as a real and imaginary component. |
Booleans : The Boolean data type represents only one bit of information either true or false.
Strings : The string data type represents a sequence of Unicode code points.