Re: Proposal: Add singleton function to Data.List module

At the risk of completely derailing the conversation, I have always called this the "robot monkey operator". I fail to see what is so ninja-like about it. Anyway, I think I am +1 on adding Data.List.singleton. -Brent On Mon, Aug 12, 2019, 12:35 PM Zemyla wrote:

I also like the ninja-robot operator, because it's visually interesting and easy to search for.

Also, if you're importing several libraries which already use "singleton", then you have to use "List.singleton" every time, which is far uglier to me.

On Mon, Aug 12, 2019 at 12:03 PM Herbert Valerio Riedel wrote:

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- `(:[])`: Subjectively ugly.

I consider "subjectively ugly" to be a non-technical and thus really weak argument to dismiss the list-idiomatic ninja-robot-operator (:[]) which also happens to be shorter than the proposed alias for it. I for one don't see a significant benefit for adding a redundant synonym to `Data.List` and are thus -1 on this.

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singleton :: a -> [a] singleton x = [x]

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