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Freeze functions for package-level collections #41904

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mcandre opened this issue Oct 10, 2020 · 2 comments
Closed

Freeze functions for package-level collections #41904

mcandre opened this issue Oct 10, 2020 · 2 comments

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@mcandre
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@mcandre mcandre commented Oct 10, 2020

Please provide standard functions for generating immutable collections, including slices and hashmaps, safe for use as package-level members.

I think it is too late to require pointers in order to modify collections, at least within Go 1.x. We may have to superimpose a freeze() function returning an immutable, potentially type-distinct, flavor of collections.

Rust has this. Ruby has this. Haskell has this. Clojure has this. Python has third party libraries for this.

C/C++ probably require wrapper functions, meaning that developers can easily expose mutable collections without intending to.

@go101
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@go101 go101 commented Oct 10, 2020

Do you mean #6386?

@mvdan
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@mvdan mvdan commented Oct 10, 2020

Duplicate, and also closing as per #41739 (comment).

@mvdan mvdan closed this Oct 10, 2020
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