Macro cucumber::try_destructure
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macro_rules! try_destructure { ($r: ident) => { ... }; }
Destructure a vector of InvokeArgument into a tuple of values, or a bad InvokeResponse, similar to normal try!
Will either short circult return an InvokeArgument::Fail, describing either improper arg count or improper arg type, or will yield the tuple of values
Reminder: Tuple of one value is represented as (t,): (Type,)
Example
#[macro_use] extern crate cucumber; use cucumber::{ InvokeArgument, }; fn main() { fn do_work() { let args = vec![ InvokeArgument::from_str("1"), InvokeArgument::from_str("2"), InvokeArgument::None ]; let (x, y, z): (u32, u32, bool) = try_destructure!(args); assert_eq!(x, 1); assert_eq!(y, 2); assert_eq!(z, false); } }