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To support strings as lists #4

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To support strings as lists #4

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e29905d
Update isEmpty
japeto Apr 29, 2020
f6cdd2b
Add isString
japeto Apr 29, 2020
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18 changes: 17 additions & 1 deletion src/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -37,12 +37,15 @@ function rest(list) {
* @returns {boolean}
* @example isEmpty([1, 2, 3]); // => false
* @example isEmpty([]); // => true

* @example isEmpty(""); // => true
*/
function isEmpty(list) {
if (typeof list == 'object') {
return list.length === 0;
}
if (typeof list == 'string') {
return list.length === 0;
}
return false;
}

Expand All @@ -59,6 +62,19 @@ function isList(list) {
return typeof list === 'object' && typeof list.length == 'number' && list.length >= 0;
}

/**
* Retorna verdadero si el objeto de entrada es una cadena de texto
* @param {String} str
* @returns {boolean}
* @example isString(""); // => true
* @example isString([1, 2]); // => false
* @example isString(1); // => false
* @example isString("Hola"); // => true
*/
function isString(str) {
return typeof str === 'string' && typeof str.length == 'number' && str.length >= 0;
}

/**
* Retorna la longitud de un arreglo
* @param {Array} list
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