fn regex(&self, expr: &Expr) -> Result<Regex> {
        let mut builder = RegexBuilder::new(&expr.to_string());
        builder.unicode(true);
        self.regex_build(builder)
    }
/// Creates a new regex from the given expression with the current
/// configuration.
Creates a new regex from the given expression with the current
configuration.
Creates a new regex from the given expression with the current configuration .
fn regex(&self, expr: &Expr) -> Result<Regex> {
        let mut builder = RegexBuilder::new(&expr.to_string());
        builder.unicode(true);
        self.regex_build(builder)
    }
fn regex ( & self , expr : & Expr ) -> Result < Regex > { let mut builder = RegexBuilder :: new ( & expr . to_string ( ) ) ; builder . unicode ( true ) ; self . regex_build ( builder ) }
Creates a new regex from the given expression with the current
configuration.
Creates a new regex from the given expression with the current configuration .
&self
expr
&Expr