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Struct `std.digest.ExampleDigest`

This documents the general structure of a Digest in the template API. All digest implementations should implement the following members and therefore pass the isDigest test.


						
				struct ExampleDigest
				;

Methods

Name	Description
`finish` ()	The finish function returns the final hash sum and resets the Digest.
`put` (data)	Use this to feed the digest with data. Also implements the `isOutputRange` interface for `ubyte` and `const(ubyte)[]`. The following usages of `put` must work for any type which passes `isDigest`:
`start` ()	This function is used to (re)initialize the digest. It must be called before using the digest and it also works as a 'reset' function if the digest has already processed data.

Note

A digest must be a struct (value type) to pass the isDigest test.
A digest passing the isDigest test is always an OutputRange

Example

//Using the OutputRange feature
import std.algorithm.mutation : copy;
import std.digest.md;
import std.range : repeat;

auto oneMillionRange = repeat!ubyte(cast(ubyte)'a', 1000000);
auto ctx = makeDigest!MD5();
copy(oneMillionRange, &ctx); //Note: You must pass a pointer to copy!
writeln(ctx.finish().toHexString()); // "7707D6AE4E027C70EEA2A935C2296F21"

Authors

Johannes Pfau

License

Boost License 1.0.