Method is_true

datafusion/expr/src/expr.rs:1956–1958

Return `IsTrue(Box(self))`

(self)

    /// Return `IsTrue(Box(self))`
    pub fn is_true(self) -> Expr {
        Expr::IsTrue(Box::new(self))
    }

    /// Return `IsNotTrue(Box(self))`
    pub fn is_not_true(self) -> Expr {