bitblob 2.2.0
A small library to represent hash types as value types
To use this package, run the following command in your project's root directory:
Manual usage
Put the following dependency into your project's dependences section:
BitBlob
A lightweight wrapper to represent hashes as value types.
Example
/// Alias for a 256 bits / 32 byte hash type
alias Hash = BitBlob!32;
/// Used in the following tests
enum BTCGenesisStr = `0x000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f`;
// Most functions are anotated as `nothrow`/`@nogc`/`pure`/`@safe`,
// except for the two `toString` overloads
@nogc @safe pure nothrow unittest
{
import std.digest.sha;
// Can be initialized from an `ubyte[32]`
// (or `ubyte[]` of length 32)
const Hash fromSha = sha256Of("Hello World");
// Or from a string
const Hash genesis = BTCGenesisStr;
assert(!genesis.isNull());
assert(Hash.init.isNull());
ubyte[5] empty;
assert(Hash.init < genesis);
assert(genesis[0 .. 5] == empty);
}
// This cannot be nothrow/@nogc because format is not allocated as such
// However, Bitblob has tests that it does not allocate
unittest
{
// This does not allocate
char[Hash.StringBufferSize] buff;
const Hash genesis = BTCGenesisStr;
formattedWrite(buff[], "%s", genesis);
assert(buff[] == BTCGenesisStr);
}
Note on design
BitBlob
is intended for convenient representation
of fully computed / finalized hashes.
String representation, comparison, and seamless conversion from string or binary representation are the focus.
Byte-level manipulation of the underlying data is not
prefered, although possible through opSlice
.
- 2.2.0 released 3 years ago
- Geod24/bitblob
- MIT
- Copyright © 2018, Mathias 'Geod24' Lang
- Authors:
- Dependencies:
- none
- Versions:
-
2.3.0 2021-Dec-08 2.2.0 2021-Apr-08 2.1.0 2021-Mar-16 2.0.0 2021-Mar-12 1.1.4 2019-Aug-30 - Download Stats:
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- Score:
- 0.9
- Short URL:
- bitblob.dub.pm