On Monday, 18 January 2021 at 19:54:04 UTC, Adam D. Ruppe wrote:
On Monday, 18 January 2021 at 19:34:52 UTC, Jack wrote:
is that sytax derived from there?
sort of. it is the type pattern matching "is expression"
described here:
https://dlang.org/spec/expression.html#IsExpression
I read std.traits and some related stuff but missed reading is
expression doc lol
The is(A:B) thing technically means "if A is implicitly
convertible to B" which of course works for base classes and
interfaces well but that's not all it does, like is(int : long)
passes too.
C# uses something like that too but I totally missed to look for
the equivalent in D, which would be pretty much same thing
I just remember the syntax thanks to its similarity to type
declarations.
good way to remember too
