Pre-RFC: Disallow using assignment in a function call in Rust 2018 (disallow `f(a=b)`)

[MajorBreakfast]

I've created the tread for = in struct construction

Pre-RFC: `=` for struct construction

Edit: I’ll update this from time to time Summary Introduction of = for struct construction in Rust 2018. let my_struct = MyStruct { a = 42 }; // New let my_struct = MyStruct { a: 42 }; // Current The new syntax is intended to gradually replace the current syntax. Existing code will continue to compile without warnings. Motivation Rust uses = in assignment expressions. In contrast to this, when creating an instance of a struct, the : instead of = is used to initialize struct fields with value…