StringBuiler is a mutable object, F# encourages employing immutability as much as possible. So one should use transformation rather than mutation. Does this apply to StringBuilder when it comes to building a string in F#? Is there an F# immutable alternative to it? If so, is this alternative as efficient?StringBuiler is a mutable object, F# encourages
阅读背景：
在f#中使用StringBuilder是正确的吗?
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