JavaScript不可變的數據結構：seamless-immutable

JavaScript的不可變數據結構，向后兼容正常的JS Arrays 和 Objects。

Use them in for loops, pass them to functions expecting vanilla JavaScript data structures, etc.

var array = Immutable(["totally", "immutable", {hammer: "Can’t Touch This"}]);

array[1] = "I'm going to mutate you!"
array[1] // "immutable"

array[2].hammer = "hm, surely I can mutate this nested object..."
array[2].hammer // "Can’t Touch This"

for (var index in array) { console.log(array[index]); }
// "totally"
// "immutable"
// { hammer: 'Can’t Touch This' }

JSON.stringify(array) // '["totally","immutable",{"hammer":"Can’t Touch This"}]'

This level of backwards compatibility requires ECMAScript 5 features like Object.defineProperty and Object.freeze to exist and work correctly, which limits the browsers that can use this library to the ones shown in the test results below. (tl;dr IE9+)

項目主頁：http://www.baiduhome.net/lib/view/home/1415696467805