Breaking ";" rule with lambda functions

[ag0aep6g]

On Monday, 1 August 2022 at 14:15:31 UTC, pascal111 wrote:
> Many of D rules are taken from C, we know that, so a general 
> basic rule is to put ";" after each statement, so the previous 
> statement of filter should be "auto r = chain(a, b).filter!(a 
> => a > 0;);"? Why D leaves ";" in this case?

`a => a > 0` is not a statement. It's an expression.