Struct matrix_sdk::uuid::Builder [−][src]
pub struct Builder(_);
Expand description
A builder struct for creating a UUID.
Examples
Creating a v4 UUID from externally generated bytes:
use uuid::{Builder, Variant, Version};
let random_bytes = rng();
let uuid = Builder::from_bytes(random_bytes)
.set_variant(Variant::RFC4122)
.set_version(Version::Random)
.build();
Implementations
Creates a Builder
using the supplied big-endian bytes.
Examples
Basic usage:
let bytes: uuid::Bytes = [
70, 235, 208, 238, 14, 109, 67, 201, 185, 13, 204, 195, 90, 145, 63, 62,
];
let mut builder = uuid::Builder::from_bytes(bytes);
let uuid = builder.build().to_hyphenated().to_string();
let expected_uuid = String::from("46ebd0ee-0e6d-43c9-b90d-ccc35a913f3e");
assert_eq!(expected_uuid, uuid);
An incorrect number of bytes:
ⓘ
let bytes: uuid::Bytes = [4, 54, 67, 12, 43, 2, 98, 76]; // doesn't compile
let uuid = uuid::Builder::from_bytes(bytes);
Creates a Builder
using the supplied big-endian bytes.
Errors
This function will return an error if b
has any length other than 16.
Examples
Basic usage:
let bytes = [4, 54, 67, 12, 43, 2, 98, 76, 32, 50, 87, 5, 1, 33, 43, 87];
let builder = uuid::Builder::from_slice(&bytes);
let uuid =
builder.map(|mut builder| builder.build().to_hyphenated().to_string());
let expected_uuid =
Ok(String::from("0436430c-2b02-624c-2032-570501212b57"));
assert_eq!(expected_uuid, uuid);
An incorrect number of bytes:
let bytes = [4, 54, 67, 12, 43, 2, 98, 76];
let builder = uuid::Builder::from_slice(&bytes);
assert!(builder.is_err());
Creates a Builder
from four big-endian field values.
Errors
This function will return an error if d4
’s length is not 8 bytes.
Examples
Basic usage:
let d4 = [12, 3, 9, 56, 54, 43, 8, 9];
let builder = uuid::Builder::from_fields(42, 12, 5, &d4);
let uuid =
builder.map(|mut builder| builder.build().to_hyphenated().to_string());
let expected_uuid =
Ok(String::from("0000002a-000c-0005-0c03-0938362b0809"));
assert_eq!(expected_uuid, uuid);
An invalid length:
let d4 = [12];
let builder = uuid::Builder::from_fields(42, 12, 5, &d4);
assert!(builder.is_err());
Specifies the variant of the UUID.
Specifies the version number of the UUID.
Trait Implementations
Auto Trait Implementations
impl RefUnwindSafe for Builder
impl UnwindSafe for Builder
Blanket Implementations
Mutably borrows from an owned value. Read more
Instruments this type with the provided Span
, returning an
Instrumented
wrapper. Read more