ExecSpecSeqIndexOfFirst

vstd::contrib::exec_spec

Trait ExecSpecSeqIndexOfFirst 

Source 
pub trait ExecSpecSeqIndexOfFirst<'a>: Sized + DeepView {
    type Elem: DeepView;

    // Required method
    exec fn exec_index_of_first(self, needle: Self::Elem) -> Option<usize>;
}
Expand description

Spec for executable version of Seq::index_of_first.

Required Associated Types§

Source

type Elem: DeepView

Required Methods§

Source

exec fn exec_index_of_first(self, needle: Self::Elem) -> Option<usize>

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types§

Source§

impl<'a, T: DeepView + PartialEq> ExecSpecSeqIndexOfFirst<'a> for &'a [T]
where &'a T: ExecSpecEq<'a, Other = &'a T>,

Source§

exec fn exec_index_of_first(self, needle: Self::Elem) -> res : Option<usize>

ensures
match res {
    Some(i) => {
        self.deep_view().index_of_first(needle.deep_view()).is_some()
            && i as int == self.deep_view().index_of_first(needle.deep_view())->0
    }
    None => self.deep_view().index_of_first(needle.deep_view()) == None::<int>,
},
Source§

type Elem = T

Implementors§