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Overview

yerevan.rs — the computation expressions (do-notations) library for rust, inspired by F#'s CEs but with syntax-design changes and improvements.

Docs

Firstly define the struct which is implementing all neccessary functions for yerevan.rs's computation expressions. Do it like this:

yer! {
    MyOption =>
    let! ...
    let ...
    ret ...
}

yer! expression	description
`$some_your_struct` =>	Defining the struct as the provider of computation expression functions.
`let!` $your_var = $your_expression	Using the last defined struct in macros as the provider of `bind` function and call the `$that_struct::bind($your_expression, &\|$your_var\| { next code })` expression.
`let` $your_var = $your_expression	Just defining the variable `$your_var`
`do!` $your_expression	Using the last defined struct in macros as the provider of `bind` function and call the `$that_struct::bind($your_expression, &\|_\| { next code })` expression.
`do` $your_expression	Simply run `$your_expression`
`ret!` $your_expression	Using the last defined struct in macros as the provider of `ret_from` function and call the `$that_struct::ret_from($your_expression)` expression.
`ret` $your_expression	Using the last defined struct in macros as the provider of `ret` function and call the `$that_struct::ret($your_expression)` expression.
`yield` $your_expression	Using the last defined struct in macros as the provider of `combine` and `ret_yield` functions and call the `$that_struct::combine(yer!($that_struct => next code, $that_struct::ret_yield($your_expression))` expression.

Examples

soon...

yerevan 0.1.0

Overview

Docs

Examples