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Matriz de objetos -> suma de cada grupo e insertar al final del grupo

Quiero agrupar la matriz por una clave específica y mostrar su suma al final de cada grupo.

Ejemplo:

 var array = [ { name: "Naruto", qty: 5 }, { name: "Sasuke", qty: 2 }, { name: "Naruto", qty: 2 }, { name: "Hinata", qty: 4 }, { name: "Sasuke", qty: 4 }, ]

Resultado Esperado:

 [ // naruto's group { name: "Naruto", qty: 5 }, { name: "Naruto", qty: 2 }, { name: "Total", qty: 7 }, // sasuke's group { name: "Sasuke", qty: 2 }, { name: "Sasuke", qty: 4 }, { name: "Total", qty: 6 }, // hinata's group { name: "Hinata", qty: 4 }, { name: "Total", qty: 4 }, ]
about 4 years ago · Juan Pablo Isaza
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