ExecSpecSeqFirst

vstd::contrib::exec_spec

Trait ExecSpecSeqFirst 

Source 
pub trait ExecSpecSeqFirst<'a>: Sized + DeepView<V = Seq<<Self::Elem as DeepView>::V>> {
    type Elem: DeepView;

    // Required method
    exec fn exec_first(self) -> Self::Elem;
}
Expand description

Spec for executable version of Seq::first.

Required Associated Types§

Source

type Elem: DeepView

Required Methods§

Source

exec fn exec_first(self) -> Self::Elem

requires
0 < self.deep_view().len(),

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> ExecSpecSeqFirst<'a> for &'a [T]

Source§

exec fn exec_first(self) -> res : Self::Elem

ensures
res.deep_view() == self.deep_view().first(),
Source§

type Elem = &'a T

Implementors§