Incremental Sieve of EratosthenesSieve of Eratosthenes Optimization in RustSimple cat in RustSelection sort algorithm in RustThe rusty Sieve of EratosthenesPrime Sieve in Rust (Sieve of Eratosthenes)Rust exercise department employee managementLL parser implementation in RustFinding Anagrams in RustSieve of Eratosthenes in RustA freelist in Rust
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Incremental Sieve of Eratosthenes
Sieve of Eratosthenes Optimization in RustSimple cat in RustSelection sort algorithm in RustThe rusty Sieve of EratosthenesPrime Sieve in Rust (Sieve of Eratosthenes)Rust exercise department employee managementLL parser implementation in RustFinding Anagrams in RustSieve of Eratosthenes in RustA freelist in Rust
$begingroup$
I am in the process of learning rust and am still having some issues with borrowing and ownership. I find myself trying to borrow mutable references that are already borrowed as immutable references etc...
I noticed that when I try to iterate over the primes without owning them, I encounter issues trying to modify the composites hash map. I was able to get around this by calling to_owned on the vector. Is this the right way to handle this?
This uses the generator feature.
cargo -V
cargo 1.35.0-nightly (0e35bd8af 2019-03-13)
#![feature(generators, generator_trait)]
use std::collections::HashMap;
use std::ops::Generator, GeneratorState;
let mut sieve = ||
let mut x: u32 = 2;
let mut composites: HashMap<u32, Vec<u32>> = HashMap::new();
loop
match composites.get(&x)
Some(primes) =>
for _prime in primes.to_owned() v.push(_prime))
.or_insert(vec![_prime]);
composites.remove(&x);
None =>
yield x;
composites.insert(x * x, vec![x]);
x = x + 1;
;
rust sieve-of-eratosthenes
edited 37 secs ago
Jamal♦
30.4k11121227
asked 3 hours ago
kylekyle
1316
$endgroup$
add a comment |
$begingroup$
I am in the process of learning rust and am still having some issues with borrowing and ownership. I find myself trying to borrow mutable references that are already borrowed as immutable references etc...
I noticed that when I try to iterate over the primes without owning them, I encounter issues trying to modify the composites hash map. I was able to get around this by calling to_owned on the vector. Is this the right way to handle this?
This uses the generator feature.
cargo -V
cargo 1.35.0-nightly (0e35bd8af 2019-03-13)
#![feature(generators, generator_trait)]
use std::collections::HashMap;
use std::ops::Generator, GeneratorState;
let mut sieve = ||
let mut x: u32 = 2;
let mut composites: HashMap<u32, Vec<u32>> = HashMap::new();
loop
match composites.get(&x)
Some(primes) =>
for _prime in primes.to_owned() v.push(_prime))
.or_insert(vec![_prime]);
composites.remove(&x);
None =>
yield x;
composites.insert(x * x, vec![x]);
x = x + 1;
;
rust sieve-of-eratosthenes
edited 37 secs ago
Jamal♦
30.4k11121227
asked 3 hours ago
kylekyle
1316
$endgroup$
$begingroup$
@Stargateur this code is working, it does require generators though
$endgroup$
– kyle
3 hours ago
$begingroup$
@E_net4 I apologize, I had added in this information!
$endgroup$
– kyle
3 hours ago
add a comment |
$begingroup$
I am in the process of learning rust and am still having some issues with borrowing and ownership. I find myself trying to borrow mutable references that are already borrowed as immutable references etc...
I noticed that when I try to iterate over the primes without owning them, I encounter issues trying to modify the composites hash map. I was able to get around this by calling to_owned on the vector. Is this the right way to handle this?
This uses the generator feature.
cargo -V
cargo 1.35.0-nightly (0e35bd8af 2019-03-13)
#![feature(generators, generator_trait)]
use std::collections::HashMap;
use std::ops::Generator, GeneratorState;
let mut sieve = ||
let mut x: u32 = 2;
let mut composites: HashMap<u32, Vec<u32>> = HashMap::new();
loop
match composites.get(&x)
Some(primes) =>
for _prime in primes.to_owned() v.push(_prime))
.or_insert(vec![_prime]);
composites.remove(&x);
None =>
yield x;
composites.insert(x * x, vec![x]);
x = x + 1;
;
rust sieve-of-eratosthenes
edited 37 secs ago
Jamal♦
30.4k11121227
asked 3 hours ago
kylekyle
1316
$endgroup$
I am in the process of learning rust and am still having some issues with borrowing and ownership. I find myself trying to borrow mutable references that are already borrowed as immutable references etc...
I noticed that when I try to iterate over the primes without owning them, I encounter issues trying to modify the composites hash map. I was able to get around this by calling to_owned on the vector. Is this the right way to handle this?
This uses the generator feature.
cargo -V
cargo 1.35.0-nightly (0e35bd8af 2019-03-13)
#![feature(generators, generator_trait)]
use std::collections::HashMap;
use std::ops::Generator, GeneratorState;
let mut sieve = ||
let mut x: u32 = 2;
let mut composites: HashMap<u32, Vec<u32>> = HashMap::new();
loop
match composites.get(&x)
Some(primes) =>
for _prime in primes.to_owned() v.push(_prime))
.or_insert(vec![_prime]);
composites.remove(&x);
None =>
yield x;
composites.insert(x * x, vec![x]);
x = x + 1;
;
rust sieve-of-eratosthenes
rust sieve-of-eratosthenes
edited 37 secs ago
Jamal♦
30.4k11121227
asked 3 hours ago
kylekyle
1316
edited 37 secs ago
Jamal♦
30.4k11121227
asked 3 hours ago
kylekyle
1316
edited 37 secs ago
Jamal♦
30.4k11121227
edited 37 secs ago
Jamal♦
30.4k11121227
edited 37 secs ago
Jamal♦
30.4k11121227
30.4k11121227
asked 3 hours ago
kylekyle
1316
asked 3 hours ago
kylekyle
1316
asked 3 hours ago
kylekyle
1316
1316
$begingroup$
@Stargateur this code is working, it does require generators though
$endgroup$
– kyle
3 hours ago
$begingroup$
@E_net4 I apologize, I had added in this information!
$endgroup$
– kyle
3 hours ago
add a comment |
$begingroup$
@Stargateur this code is working, it does require generators though
$endgroup$
– kyle
3 hours ago
$begingroup$
@E_net4 I apologize, I had added in this information!
$endgroup$
– kyle
3 hours ago
$begingroup$
@Stargateur this code is working, it does require generators though
$endgroup$
– kyle
3 hours ago
$begingroup$
@Stargateur this code is working, it does require generators though
$endgroup$
– kyle
3 hours ago
$begingroup$
@E_net4 I apologize, I had added in this information!
$endgroup$
– kyle
3 hours ago
$begingroup$
@E_net4 I apologize, I had added in this information!
$endgroup$
– kyle
3 hours ago
add a comment |
0
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$begingroup$
@Stargateur this code is working, it does require generators though
$endgroup$
– kyle
3 hours ago
$begingroup$
@E_net4 I apologize, I had added in this information!
$endgroup$
– kyle
3 hours ago