I have a function that reads a line of string and do some
computation.
I searched the forum and found that people use `const(char)[]` or
`in char[]` to accept both string and char[] arguments.
What's the difference between `const(char)[]` and `in char[]`?
If they are not the same, then which is better? If they are, then
why both forms exists?
I found it a bit confusing and not quite readable, so I made an
alias:
alias str = const(char)[]
and so far it works. But if `in char[]` is better, then I cannot
alias it:
alias str = in char[]
this does not compile.
