This article is a much needed resource for someone who might come across such usage and google it. I agree that it shouldn't be used because it relies on whitespace formatting and in fact, deceives the reader into thinking it's a single legitimate operator.
I suggest adding names of languages that accept this usage in the title? And perhaps a clarification in the beginning that the "long arrow operator" doesn't actually exist.
I'm sure the comments section have clarified those facts strongly enough. 😂
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