Struct valuable::NamedValues

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

Set of values from a Structable or Enumerable with named fields.

Implementations

impl<'a> NamedValues<'a>

pub fn new( fields: &'a [NamedField<'a>], values: &'a [Value<'a>] ) -> NamedValues<'a>

Create a new NamedValues instance.

Both fields and values must be the same length.

Panics

The method panics if fields and values are different lengths.

Examples

use valuable::{NamedField, NamedValues, Value};

let fields = [
    NamedField::new("foo"),
    NamedField::new("bar")
];
let values = [
    Value::U32(123),
    Value::U32(456),
];

let named_values = NamedValues::new(&fields, &values);

assert_eq!(
    named_values.get(&fields[0]).unwrap().as_u32(),
    Some(123));

pub fn get(&self, field: &NamedField<'_>) -> Option<&Value<'_>>

Get a value using a NamedField reference.

Examples

use valuable::{NamedField, NamedValues, Value};

let fields = [
    NamedField::new("foo"),
    NamedField::new("bar")
];
let values = [
    Value::U32(123),
    Value::U32(456),
];

let named_values = NamedValues::new(&fields, &values);

assert_eq!(
    named_values.get(&fields[0]).unwrap().as_u32(),
    Some(123));

pub fn get_by_name(&self, name: impl AsRef<str>) -> Option<&Value<'_>>

Get a value using string.

Examples

use valuable::{NamedField, NamedValues, Value};

let fields = [
    NamedField::new("foo"),
    NamedField::new("bar")
];
let values = [
    Value::U32(123),
    Value::U32(456),
];

let named_values = NamedValues::new(&fields, &values);

assert_eq!(
    named_values.get_by_name("foo").unwrap().as_u32(),
    Some(123));

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

Iterate all name-value pairs.

Examples

use valuable::{NamedField, NamedValues, Value};

let fields = [
    NamedField::new("foo"),
    NamedField::new("bar")
];
let values = [
    Value::U32(123),
    Value::U32(456),
];

let named_values = NamedValues::new(&fields, &values);

for (field, value) in named_values.iter() {
    println!("{:?}: {:?}", field, value);
}

pub fn len(&self) -> usize

Returns the length of fields.

pub fn is_empty(&self) -> bool

Returns true if fields have a length of 0.

Trait Implementations

impl<'a> Debug for NamedValues<'a>

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

Formats the value using the given formatter.

impl<'a, 'b> IntoIterator for &'b NamedValues<'a>

type Item = (&'b NamedField<'a>, &'b Value<'a>)

The type of the elements being iterated over.

type IntoIter = Iter<'a, 'b>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.