Struct ExprFor

#[non_exhaustive]
pub struct ExprFor {
    pub attributes: Vec<Attribute>,
    pub label: Option<(Label, Colon)>,
    pub for_token: For,
    pub binding: Pat,
    pub in_: In,
    pub iter: Box<Expr>,
    pub body: Box<Block>,
}

A for loop over an iterator.

• for <pat> in <expr> <block>.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

attributes: Vec<Attribute>

The attributes of the for loop

label: Option<(Label, Colon)>

The label of the loop.

for_token: For

The for keyword.

binding: Pat

The pattern binding to use. Non-trivial pattern bindings will panic if the value doesn’t match.

in_: In

The in keyword.

iter: Box<Expr>

Expression producing the iterator.

body: Box<Block>

The body of the loop.

Trait Implementations

impl Debug for ExprFor

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl OptionSpanned for ExprFor

fn option_span(&self) -> Option<Span>

Get the optional span of the type.

impl Parse for ExprFor

fn parse(p: &mut Parser<'_>) -> Result<Self>

Parse the current item from the parser.

impl PartialEq for ExprFor

fn eq(&self, other: &ExprFor) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Spanned for ExprFor

fn span(&self) -> Span

Get the span of the type.

impl ToTokens for ExprFor

fn to_tokens( &self, context: &mut MacroContext<'_, '_, '_>, stream: &mut TokenStream, ) -> Result<()>

Turn the current item into tokens.

impl TryClone for ExprFor

fn try_clone(&self) -> Result<Self>

Try to clone the current value, raising an allocation error if it’s unsuccessful.

fn try_clone_from(&mut self, source: &Self) -> Result<(), Error>

Performs copy-assignment from source.

impl Eq for ExprFor

impl StructuralPartialEq for ExprFor