How to update Associative Array?

[kdevel]

On Monday, 14 February 2022 at 01:04:08 UTC, Ali Çehreli wrote:

[...]

> Point taken but how deep should we understand library code, not 
> all being Phobos. My pet peeve:
>
> import std.stdio;
>
> void main(string[] args) {
>   writefln!"hello"(42);
> }
>
> /usr/include/dlang/dmd/std/stdio.d(4442): Error: no property 
> `msg` for type `string`
>
> I am happy that it's caught at compile time but what 'msg' 
> property are we talking about? What does it have to be with me?
>
> I would like it if the
>
> It would be better if the compilation error said:
>
>   Must satify formatSpecsMatchArgs!("hello", int)

Interestingly

    writefln ("hello", 42);

does not throw at runtime.