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Funções number e strings em geral
##Validation Functions
Funções uteis em geral (string, number, ...)
validarEmail
validarPassword -> "Obrigatório uso de letras(maiúsculo e minúsculo) e números de 8 a 15 caracters"
validarData
validarCpf
validarCnpj
replaceAll
padLeft
padRight
padLeft
padRight "1".padLeft(2); ==> "01"
0.padRight(5,'x'); ==> "0xxxx"