On Wednesday, 17 June 2020 07:54:02 UTC+10, Alexander Morozov wrote:
>
> I wonder how could we avoid this confusion (apart from using different 
> brackets :)).
>

I know the brackets discussion has been had before, and that there are some 
technical, and non-technical reasons why parentheses were settled on, but 
this really illustrates the limitations of relying on a single delimiter 
for everything. Even in function declarations, where it's most clear what's 
intended, there is a significant cognitive load placed on the  reader to 
determine what's happening, possibly involving backtracking to a previous 
set of parens. I think underestimating the impact of the syntax on reading 
comprehension would be a grave mistake, and I strongly believe that the 
proliferation of parens hurts here.

This second draft removes some other concerns that I had with the contracts 
design, but this syntax issue has stuck out to me as problematic since the 
start, and I can't shake it.

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