Trait arcon::weld::ast::prelude::Placeholder

pub trait Placeholder {
    fn is_placeholder(&self) -> bool;
    fn new_placeholder() -> Self;
}

Creates a placeholder expression.

Required methods

fn is_placeholder(&self) -> bool

Returns whether this expression is a placeholder.

fn new_placeholder() -> Self

Create a new placeholder.

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Implementations on Foreign Types

impl Placeholder for Box<Expr>

fn is_placeholder(&self) -> bool

fn new_placeholder() -> Box<Expr>

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Implementors

impl Placeholder for Expr

fn is_placeholder(&self) -> bool

fn new_placeholder() -> Expr

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