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In this tutorial, we will learn about how to convert string to boolean type in Go programming language.

ParseBool

The function ParseBool converts the string to a boolean value. It can accepts 1, t, T, TRUE, true, True for true boolean value and 0, f, F, FALSE, false, False for false boolean value. Any other value will return an error.

Syntax

func ParseBool(str string) (b bool, err error)

Example

package main

import (
    "fmt"
    "strconv"
)

func main() {

    var (
	Tfirst  = "T"
	Tsecond = "1"
	Tthird  = "True"

	Ffirst  = "F"
	Fsecond = "0"
	Fthird  = "False"

	Err = "TFalse"
    )

    first, _ := strconv.ParseBool(Tfirst)
    fmt.Printf("%T, %v\n", first, first)

    second, _ := strconv.ParseBool(Tsecond)
    fmt.Printf("%T, %v\n", second, second)

    third, _ := strconv.ParseBool(Tthird)
    fmt.Printf("%T, %v\n", third, third)

    fourth, _ := strconv.ParseBool(Ffirst)
    fmt.Printf("%T, %v\n", fourth, fourth)

    fifth, _ := strconv.ParseBool(Fsecond)
    fmt.Printf("%T, %v\n", fifth, fifth)

    sixth, _ := strconv.ParseBool(Fthird)
    fmt.Printf("%T, %v\n", sixth, sixth)

    seventh, error := strconv.ParseBool(Err)
    fmt.Printf("%T, %v, %v\n", seventh, seventh, error)
}

Output

bool, true
bool, true
bool, true
bool, false
bool, false
bool, false
bool, false, strconv.ParseBool: parsing "TFalse": invalid syntax

References

1. ParseBool function Docs

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