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dict: Move Dict.from(otherdict) functionality into clone method

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(imported from commit 6a3981a726922d7acf55b49ea2d477271da430d3)
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Zev Benjamin
2013-08-20 15:32:55 -04:00
parent 2c775d0894
commit 59041d993b
2 changed files with 12 additions and 15 deletions
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25
static/js/dict.js
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@@ -16,29 +16,20 @@ function Dict(opts) {
/* Constructs a new Dict object from another object.
*
* Dict.from(otherdict) -> create a shallow copy of otherdict
* Dict.from(jsobj, opts) -> create a Dict with keys corresponding to the
* properties of jsobj and values corresponding to
* the value of the appropriate property. `opts` is
* passed to the Dict constructor.
*/
Dict.from = function Dict_from(obj, opts) {
var ret;
if (typeof obj === "object" && obj !== null) {
if (obj instanceof Dict) {
ret = new Dict(obj._opts);
ret._items = _.clone(obj._items);
} else {
ret = new Dict(opts);
_.each(obj, function (val, key) {
ret.set(key, val);
});
}
} else {
if (typeof obj !== "object" || obj === null) {
throw new TypeError("Cannot convert argument to Dict");
}
var ret = new Dict(opts);
_.each(obj, function (val, key) {
ret.set(key, val);
});
return ret;
};
@@ -51,6 +42,12 @@ Dict.prototype = _.object(_.map({
return ':' + k;
},
clone: function Dict_clone() {
var ret = new Dict(this._opts);
ret._items = _.clone(this._items);
return ret;
},
get: function Dict_get(key) {
var mapping = this._items[this._munge(key)];
if (mapping === undefined) {