In JavaScript zero is equal to an empty string ( == )
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In JavaScript zero is equal to an empty string ( == )
En JavaScript, `0 == ""` da true. No es un bug tuyo: es el doble igual convirtiendo tipos antes de comparar. Hay tres iguales y confundirlos rompe apps de verdad. Un igual (`=`) no compara: asigna, por eso `if (x = 5)` entra siempre. Dos iguales (`==`) comparan después de convertir: `"5" == 5` es true, `0 == false` es true, `null == undefined ...
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Para aprender Java hoy en día, la regla general es enfocarse siempre en una versión LTS (Long-Term Support). Si estás comenzando o quieres ponerte al día en el mercado laboral actual, la recomendación se divide de la siguiente manera: 1. La versión ideal para aprender: Java 21 (LTS) Por qué: Es la versión con soporte a largo plazo más reciente y madura actualmente en adopción. Qué incluye: Incluye todas las mejoras modernas del lenguaje que aceleran y simplifican el desarrollo, como los Virtual
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