Struct sysinfo::Networks

source ·

pub struct Networks { /* private fields */ }

Expand description

Interacting with network interfaces.

use sysinfo::Networks;

let networks = Networks::new_with_refreshed_list();
for (interface_name, network) in &networks {
    println!("[{interface_name}]: {network:?}");
}

Implementations§

source §

impl Networks

source

pub fn new() -> Self

Creates a new empty Networks type.

If you want it to be filled directly, take a look at Networks::new_with_refreshed_list.

use sysinfo::Networks;

let mut networks = Networks::new();
networks.refresh_list();
for (interface_name, network) in &networks {
    println!("[{interface_name}]: {network:?}");
}

source

pub fn new_with_refreshed_list() -> Self

Creates a new Networks type with the disk list loaded. It is a combination of Networks::new and Networks::refresh_list.

use sysinfo::Networks;

let networks = Networks::new_with_refreshed_list();
for network in &networks {
    println!("{network:?}");
}

source

pub fn list(&self) -> &HashMap<String, NetworkData>

Returns the network interfaces map.

use sysinfo::Networks;

let networks = Networks::new_with_refreshed_list();
for network in networks.list() {
    println!("{network:?}");
}

source

pub fn refresh_list(&mut self)

Refreshes the network interfaces list.

use sysinfo::Networks;

let mut networks = Networks::new();
networks.refresh_list();

source

pub fn refresh(&mut self)

Refreshes the network interfaces’ content. If you didn’t run Networks::refresh_list before, calling this method won’t do anything as no interfaces are present.

⚠️ If a network interface is added or removed, this method won’t take it into account. Use Networks::refresh_list instead.

⚠️ If you didn’t call Networks::refresh_list beforehand, this method will do nothing as the network list will be empty.

use sysinfo::Networks;

let mut networks = Networks::new_with_refreshed_list();
// Wait some time...? Then refresh the data of each network.
networks.refresh();

Methods from Deref<Target = HashMap<String, NetworkData>>§

1.0.0 · source

pub fn capacity(&self) -> usize

Returns the number of elements the map can hold without reallocating.

This number is a lower bound; the HashMap<K, V> might be able to hold more, but is guaranteed to be able to hold at least this many.

§Examples

use std::collections::HashMap;
let map: HashMap<i32, i32> = HashMap::with_capacity(100);
assert!(map.capacity() >= 100);

1.0.0 · source

pub fn keys(&self) -> Keys<'_, K, V>

An iterator visiting all keys in arbitrary order. The iterator element type is &'a K.

§Examples

use std::collections::HashMap;

let map = HashMap::from([
    ("a", 1),
    ("b", 2),
    ("c", 3),
]);

for key in map.keys() {
    println!("{key}");
}

§Performance

In the current implementation, iterating over keys takes O(capacity) time instead of O(len) because it internally visits empty buckets too.

1.0.0 · source

pub fn values(&self) -> Values<'_, K, V>

An iterator visiting all values in arbitrary order. The iterator element type is &'a V.

§Examples

use std::collections::HashMap;

let map = HashMap::from([
    ("a", 1),
    ("b", 2),
    ("c", 3),
]);

for val in map.values() {
    println!("{val}");
}

§Performance

In the current implementation, iterating over values takes O(capacity) time instead of O(len) because it internally visits empty buckets too.

1.0.0 · source

pub fn iter(&self) -> Iter<'_, K, V>

An iterator visiting all key-value pairs in arbitrary order. The iterator element type is (&'a K, &'a V).

§Examples

use std::collections::HashMap;

let map = HashMap::from([
    ("a", 1),
    ("b", 2),
    ("c", 3),
]);

for (key, val) in map.iter() {
    println!("key: {key} val: {val}");
}

§Performance

In the current implementation, iterating over map takes O(capacity) time instead of O(len) because it internally visits empty buckets too.

1.0.0 · source

pub fn len(&self) -> usize

Returns the number of elements in the map.

§Examples

use std::collections::HashMap;

let mut a = HashMap::new();
assert_eq!(a.len(), 0);
a.insert(1, "a");
assert_eq!(a.len(), 1);

1.0.0 · source

pub fn is_empty(&self) -> bool

Returns true if the map contains no elements.

§Examples

use std::collections::HashMap;

let mut a = HashMap::new();
assert!(a.is_empty());
a.insert(1, "a");
assert!(!a.is_empty());

1.9.0 · source

pub fn hasher(&self) -> &S

Returns a reference to the map’s BuildHasher.

§Examples

use std::collections::HashMap;
use std::hash::RandomState;

let hasher = RandomState::new();
let map: HashMap<i32, i32> = HashMap::with_hasher(hasher);
let hasher: &RandomState = map.hasher();

1.0.0 · source

pub fn get<Q>(&self, k: &Q) -> Option<&V>
where K: Borrow<Q>, Q: Hash + Eq + ?Sized,

Returns a reference to the value corresponding to the key.

The key may be any borrowed form of the map’s key type, but Hash and Eq on the borrowed form must match those for the key type.

§Examples

use std::collections::HashMap;

let mut map = HashMap::new();
map.insert(1, "a");
assert_eq!(map.get(&1), Some(&"a"));
assert_eq!(map.get(&2), None);

1.40.0 · source

pub fn get_key_value<Q>(&self, k: &Q) -> Option<(&K, &V)>
where K: Borrow<Q>, Q: Hash + Eq + ?Sized,

Returns the key-value pair corresponding to the supplied key.

The supplied key may be any borrowed form of the map’s key type, but Hash and Eq on the borrowed form must match those for the key type.

§Examples

use std::collections::HashMap;

let mut map = HashMap::new();
map.insert(1, "a");
assert_eq!(map.get_key_value(&1), Some((&1, &"a")));
assert_eq!(map.get_key_value(&2), None);

1.0.0 · source

pub fn contains_key<Q>(&self, k: &Q) -> bool
where K: Borrow<Q>, Q: Hash + Eq + ?Sized,

Returns true if the map contains a value for the specified key.

The key may be any borrowed form of the map’s key type, but Hash and Eq on the borrowed form must match those for the key type.

§Examples

use std::collections::HashMap;

let mut map = HashMap::new();
map.insert(1, "a");
assert_eq!(map.contains_key(&1), true);
assert_eq!(map.contains_key(&2), false);

source

pub fn raw_entry(&self) -> RawEntryBuilder<'_, K, V, S>

🔬This is a nightly-only experimental API. (hash_raw_entry)

Creates a raw immutable entry builder for the HashMap.

Raw entries provide the lowest level of control for searching and manipulating a map. They must be manually initialized with a hash and then manually searched.

This is useful for