Weekly Coding Challenge: Convert String to Camel Case – written in JavaScript and Python

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2 min read ~ Hello readers! It’s really important for me to continue my practice and learning. Lately, I have been completing a coding challenge a day with codewars. This helps me keep my skills sharp and see how other devs all over the planet would solve these problems. Being able to see other solutions expands my mind for solving future problems in a clever and efficient way. Today. the problem set focuses on JavaScript and Python. Let’s dive in!

Convert String to Camel Case

Complete the method/function so that it converts dash/underscore delimited words into camel casing. The first word within the output should be capitalized only if the original word was capitalized (known as Upper Camel Case, also often referred to as Pascal case).


to_camel_case("the-stealth-warrior") // returns "theStealthWarrior"

to_camel_case("The_Stealth_Warrior") // returns "TheStealthWarrior"

JavaScript solution:

function toCamelCase(str){
  return str.split(/[,_-]+/).map( (s, i) => i !== 0 ? s.charAt(0).toUpperCase() + s.slice(1) : s).join('');

Python solution:

import re

def to_camel_case(text):
    res = re.split('_|-', text)
    for i in range(len(res)):
        if i != 0:
            text += res[i][:1].upper() + res[i][1:]
            text = res[i]
    return text

Disclaimer: *Now, as much as I am tempted to use ES8 & ES9 functions to reduce the number of lines in JavaScript, I am always a fan of readable code that others can understand. Therefore, with the JavaScript examples, I will try to write it without fancy functions as much as possible so it can actually be read and absorbed by my readers. All of my solutions are commented to explain my thinking. Of course, they could always be better. Please feel free to share how you would solve it!*

All solutions are also now on my GitHub profile if you want to check out all of the coding challenges I’ve completed so far!

All credit to problem sets goes to codewars

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