Struct udf::types::ArgList

pub struct ArgList<'a, S: UdfState>(/* private fields */);

A collection of SQL arguments

This is rusty wrapper around SQL’s UDF_ARGS struct, providing methods to easily work with arguments.

Implementations

impl<'a, S: UdfState> ArgList<'a, S>

pub fn as_vec(&'a self) -> Vec<SqlArg<'a, S>>

Create a vector of arguments for easy use

pub fn iter(&'a self) -> Iter<'a, S>

Construct an iterator over arguments

pub fn is_empty(&self) -> bool

Return true if there are no arguments

pub fn len(&self) -> usize

Get the number of arguments

pub fn get(&'a self, index: usize) -> Option<SqlArg<'a, S>>

Safely get an argument at a given index. It it is not available, None will be returned.

Trait Implementations

impl<'a, S: UdfState> Debug for ArgList<'a, S>

Derived formatting is a bit ugly, so we clean it up by using the Vec format.

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

Formats the value using the given formatter.

impl<'a, S: UdfState> IntoIterator for &'a ArgList<'a, S>

Trait for being able to iterate arguments

fn into_iter(self) -> Self::IntoIter

Construct a new

type Item = SqlArg<'a, S>

The type of the elements being iterated over.

type IntoIter = Iter<'a, S>

Which kind of iterator are we turning this into?