DEV Community

dev.to staff
dev.to staff

Posted on

Daily Challenge #310 - Boolean to String Conversion

#challenge

Implement a function which will convert the given boolean value into its string representation.

So for the boolean false, return "false"
and for the boolean true, return "true"

Good luck!

This challenge comes from btaitelb on CodeWars. Thank you to CodeWars, who has licensed redistribution of this challenge under the 2-Clause BSD License!

Want to propose a challenge idea for a future post? Email yo+challenge@dev.to with your suggestions!

Top comments (12)

Collapse
 
bradtaniguchi profile image
Brad •

shortest version I can think of:

javascript

const boolToStr = b => '' + b;
Enter fullscreen mode Exit fullscreen mode

or a more safe version that wont print null or undefined, rather it will convert it to true/false depending on its "truthiness":

javascript

const boolToStr = b => '' + !!b;
Enter fullscreen mode Exit fullscreen mode
Collapse
 
bugb profile image
bugb • • Edited

My solution that is submitted to Codewar

const char *boolean_to_string(bool b)
{
    return b ? "true" : "false";
}
Enter fullscreen mode Exit fullscreen mode

My another solution that is accepted int and char type.
C using _Generic. feel free to contribute

#define pt() printf("true\n")
#define pf() printf("false\n")
#define cast_to_boolean (x) _Generic( (x), char: x == '\0' ? pf() : pt(), int: x == 0 ? pf() : pt(), default: pf())
Enter fullscreen mode Exit fullscreen mode
Collapse
 
nijeesh4all profile image
Nijeesh Joshy • • Edited

Ruby

there already exists a function to_s.

If you want another one, here it is

def bool_to_s(str)
  (!!str).to_s
end
Enter fullscreen mode Exit fullscreen mode

It will work without the !! I just wanted to make sure it will work even if anything else is passed

Collapse
 
qm3ster profile image
Mihail Malo • • Edited

Rust

1. return an owned String: 

format!("{}", v);
Enter fullscreen mode Exit fullscreen mode

or (on nightly)

format!("{v}");
Enter fullscreen mode Exit fullscreen mode

or

v.to_string();
Enter fullscreen mode Exit fullscreen mode

2. return a reference to a string embedded in the binary: 

fn bas(v: bool) -> &'static str {
    match v {
        true => "true",
        false => "false",
    }
}
Enter fullscreen mode Exit fullscreen mode

someone in discord golfed that to

["false", "true"][my_bool as usize]
Enter fullscreen mode Exit fullscreen mode

but idk idk :v

Collapse
 
aminnairi profile image
Amin • • Edited

JavaScript

const describeBoolean = boolean => `${boolean}`;
Enter fullscreen mode Exit fullscreen mode
Collapse
 
raphaelchaula profile image
Raphael Chaula •

JavaScript 

const booleanToString = (value) => {
    return JSON.stringify(value);
};

const booleanValue = true;
const itsStringValue = booleanToString(booleanValue);
Enter fullscreen mode Exit fullscreen mode
Collapse
 
mellen profile image
Matt Ellen-Tsivintzeli •

That's pretty heavyweight! value.toString() works, too.

Collapse
 
raphaelchaula profile image
Raphael Chaula •

Yes, mine is really really heavy, just tried something no one could think of.

Collapse
 
gargakshit profile image
Akshit Garg • 
package main

import (
    "fmt"
    "strconv"
)

func main() {
    myBool := true
    fmt.Println(strconv.FormatBool(myBool))
}
Enter fullscreen mode Exit fullscreen mode

Some go here

Collapse
 
juanbenitezdev profile image
Juan Benitez • 
boolean_to_string = lambda x: str(x)
Enter fullscreen mode Exit fullscreen mode
Collapse
 
peter279k profile image
peter279k •

Python:

def boolean_to_string(b):
    return str(b)
Enter fullscreen mode Exit fullscreen mode
Collapse
 
krusty93 profile image
Andrea Grillo •

C#
bool.TrueString.ToLower()
bool.FalseString.ToLower()

View full discussion (12 comments)

Read next

_5666c464ad7652ca3ef8dc profile image

Swarm：一个去中心化存储核心技术的佼佼者

JaydenINWEB3 -

maxtern profile image

Top Software Development Companies

Max Tern -

_5666c464ad7652ca3ef8dc profile image

支持 Dapplets——赋予用户真正的信息自由

JaydenINWEB3 -

kakacomputer profile image

MongoDB Developer Day Manila 2024: A Recap - A Deep Dive into the Future of Data

KaKaComputer -