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by entity345 2667 days ago
I'm very surprised by those vitriolic comments...

Really I have never seen print change the order of the data it is given (that's manipulating, indeed) for the sake of what seems to be laziness.

If there is a real need for sorted iteration then it should be external to print, possibly a new API of maps.
2 comments
OskarS 2667 days ago
You're missing the point entirely. Maps have no defined order. You cannot "change" the order of a map, because it has no order. `[foo:1 bar:2]` is the same map as `[bar:2 foo:1]`, there is no difference.

For printing purposes that means that it doesn't matter which order you print something out in. ANY order is equally correct. So you might as well choose the one that makes the most sense to human eyes, which is to print them out ordered alphabetically on the keys.

Just because the printing function is choosing alphabetical order to print things out in, it's not "manipulating" anything. Literally nothing about the map changes.

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entity345 2667 days ago
> You're missing the point entirely. Maps have no defined order. You cannot "change" the order of a map, because it has no order.

Clearly, I am not the one missing the point...

The order maps iterate is not the point. The point is that e.g. a 'print' function should print, not sort and change the order.

> just because the printing function is choosing alphabetical order to print things out in, it's not "manipulating" anything

Again, the printing function does not 'choose', it manipulates the date returned by sorting them.

My point is that, to follow good design principle, this sorted iteration should be a public API of maps.

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weberc2 2667 days ago
How are you reading "vitriol" from these comments? "Print" isn't changing the order of the data it's given--the data is unordered by definition. It has to print it in an order, so it orders it by keys as a practical courtesy to humans. Nothing is manipulated except perhaps data structures internal to the print operation.
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entity345 2665 days ago
> "Print" isn't changing the order of the data it's given

Eh? That's exactly the functionality they are announcing...

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