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This post is auto-generated from RSS feed The Rust Programming Language Forum - Latest topics. Source: How to organize chain processing in Rust?

I created a trait like:

pub trait Colorized : std::fmt::Display {
    fn green(&self) -> ??? {
    }
    fn bright(&self) -> ??? {
    }
....

So, I want to organize a chain of calls to the trait, for example:

println!("Colorized {}", message.green().bright());

Certainly I can implement the trait for str, but if I return str, then I will lose color attributes I set before. So an idea is to return ColorAttributeHolder. More likely, I will need to implement Colorized for it too, to be able to chain my calls. However I have few questions:

1. where and how store the original caller of Colorized?
2. how to pass Colorized to the next chained calls? The best is by a reference, but the first self and the next self can be different and again I will lose valuable information.

Probably, my approach is wrong, so please share your approach.

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