> On 18 Oct 2019, at 07:59, Richard O'Keefe <rao...@gmail.com> wrote:
> 
> When is it pointless to introduce a WriteStream and just use #, ?
> When #, would not be in a loop or recursion.
> Constructing error messages, class initialisation code, that sort of thing.
> 
> If you find yourself doing a lot of concatenations, you are probably
> missing an abstraction.  For example, building up XML by string
> concatenation would be very silly: you want to build a tree and have
> it write itself to a stream.

+100

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