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What are exemples of underused data types that you wish we used more often?

Using Set or Map or WeakMap instead of the normal Object+handmade dirty functions (JavaScript), for exemples?

question

teach me master

datatypes

What are exemples of underused data types that you wish we used more often? Using Set or Map or WeakMap instead of the normal Object+handmade dirty functions (JavaScript), for exemples?

question

javascript

teach me master

datatypes

What are exemples of underused data types that you wish we used more often?

Using Set or Map or WeakMap instead of the normal Object+handmade dirty functions (JavaScript), for exemples?