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themgoncalves/javascript-immutable.js

Created May 31, 2021 14:28
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JavaScript - immutable data types
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javascript-immutable.js
const person = 'John Doe';
console.log('initial', person);
// outputs: 'John Doe'
// try to mutate the data structure
// by using the 'upper case' method
person.toUpperCase();
console.log('mutation attempt', person);
// outputs: 'John Doe'
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