I think it boils down to the fact `.put(value)` is a well known method outside the JS world that returns the value.
I honestly would **love** to have `.put` in Map, Set, and Weak friends, so that the whole thing would be: ```js const value = map.has(key) ? map.get(key) : map.put(key, createValue()); // with the more than common safe shortcut as const value = map.get(key) || map.put(key, createValue()); ``` If you understand that `put` by default returns the value you are putting, `putIfAbsent` makes perfect sense as a method that `put` the value only if absent but like `put` would return either the present one, or the one stored 'cause absent. On Thu, Oct 11, 2018 at 6:19 PM Jack Lu <[email protected]> wrote: > Don't you think the name `putIfAbsent` is somewhat misleading? In the > sense that the purpose of this function is to get the value, with a side > effect of setting a default value when it's > absent._______________________________________________ > es-discuss mailing list > [email protected] > https://mail.mozilla.org/listinfo/es-discuss >
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