Struct Args 

pub struct Args<'a> { /* private fields */ }

One command’s arguments, borrowed from the connection’s read buffer.

Index zero is the command name, the same as Redis’s argv, so an argument index in this file matches the argument index in Redis’s source and in its error messages.

Implementations

impl<'a> Args<'a>

pub fn new(argv: &'a Argv, buf: &'a [u8]) -> Args<'a>

The arguments of the command argv last decoded out of buf.

pub fn len(&self) -> usize

How many arguments there are, counting the command name.

pub fn is_empty(&self) -> bool

Whether there is not even a command name.

pub fn get(&self, i: usize) -> &'a [u8]

Argument i, or an empty slice past the end.

Past the end is empty rather than a panic because every caller has already been through the arity check, so an index past the end is a bug in the arity table rather than something a client can cause, and a wrong answer in the reply is a better way to find that bug than a process that stops answering.

pub fn opt(&self, i: usize) -> Option<&'a [u8]>

Argument i, or None past the end.

pub fn name(&self) -> &'a [u8]

The command name, which is argument zero.

pub fn int(&self, i: usize) -> Result<i64>

Argument i as an integer, with Redis’s message when it is not one.

Errors

Code::Invalid when the argument is not an integer in i64.

pub fn float(&self, i: usize) -> Result<f64>

Argument i as a float, with Redis’s message when it is not one.

Errors

Code::Invalid when the argument is not a float, which includes NaN.

Trait Implementations

impl<'a> Clone for Args<'a>

fn clone(&self) -> Args<'a>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a> Copy for Args<'a>