Golang data types

GoLang Data Types String, Boolean, Numeric | GoLang Tutorial

5 years ago Lalit Bhagtani 0

In this tutorial, we will learn about primitive data types in Go programming language.

A data type represents the type of a value that can be stored in a variable or constant. Go programming language supports three different types of primitive data types. Golang data types are as follows :- 

  1. Boolean Type
  2. String Type
  3. Numeric Type

Boolean Type

A boolean type represents the set of two predefined constants true and false.

Example

var present bool 
var notpresent bool = false

String Type

A string type represents the set of string values. A string value is a sequence of bytes. Strings are immutable, that is once it is created, it is not possible to change the contents of a string.

Example

var name string 
var designation string = "Manager"

Numeric Type

A numeric type represents sets of integer, floating-point values.

Integer

The list of predefined integer types are as follows :-

S. No Name Description
1 uint8 Unsigned 8-bit integers (0 to 255)
2 uint16 Unsigned 16-bit integers (0 to 65535)
3 uint32 Unsigned 32-bit integers (0 to 4294967295)
4 uint64 Unsigned 64-bit integers (0 to 18446744073709551615)
5 int8 Signed 8-bit integers (-128 to 127)
6 int16 Signed 16-bit integers (-32768 to 32767)
7 int32 Signed 32-bit integers (-2147483648 to 2147483647)
8 int64 Signed 64-bit integers (-9223372036854775808 to 9223372036854775807)

Example

var age int16 
var number int64 = 123456

Float

The list of predefined floating point types are as follows :-

S. No Name Description
1 float32 IEEE-754 32-bit floating-point numbers
2 float64 IEEE-754 64-bit floating-point numbers
3 complex64 Complex numbers with float32 real and imaginary parts
4 complex128 Complex numbers with float64 real and imaginary parts

Example

var marks float32 
var average float64 = 16.5

References

  1. Boolean Type Docs
  2. Numeric Type Docs
  3. String Type Docs

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