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No entiendo la diferencia entre los componentes de React.

Cuál es la diferencia entre

 const layout = (props) => ();

y

 const layout = (props) => {};

en el marco React?

about 4 years ago · Juan Pablo Isaza
1 answers
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0

Ese no es realmente un comportamiento de React , pero es cómo funcionan las funciones JS y de flecha. Al usar esta sintaxis () => () , le está diciendo a JS que devuelva el valor entre paréntesis (sin la necesidad de un return explícito:

 const a = () => ('returned value') const b = () => {'returned value'} console.log(a()) // 'returned value' console.log(b()) // undefined

entonces usar const a = () => ('returned value') es lo mismo que hacer:

 const a = () => { return 'returned value' }
about 4 years ago · Juan Pablo Isaza Report
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