[#HashedSourceWriter]
= HashedSourceWriter
:mrdocs:

Writes data to an underlying source stream, while hashing the written data.

== Synopsis

Declared in `<hash.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<typename Source>
class HashedSourceWriter
    : public xref:HashWriter.adoc[HashWriter]
----

== Base Classes

[cols="1,4"]
|===
| Name| Description
| `xref:HashWriter.adoc[HashWriter]`
| A writer stream (for serialization) that computes a 256‐bit hash.
|===

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:HashedSourceWriter/2constructor.adoc[`HashedSourceWriter`]         [.small]#[constructor]#
| Constructs a writer that writes to and hashes an underlying source.
| xref:HashWriter/GetCheapHash.adoc[`GetCheapHash`] 
| Returns the first 64 bits from the resulting hash.
| xref:HashWriter/GetHash.adoc[`GetHash`] 
| Compute the double‐SHA256 hash of all data written to this object.
| xref:HashWriter/GetSHA256.adoc[`GetSHA256`] 
| Compute the SHA256 hash of all data written to this object.
| xref:HashedSourceWriter/write.adoc[`write`] 
| Writes bytes to the source and feeds them into the hash.
| xref:HashedSourceWriter/operator_lshift.adoc[`operator<<`] 
| Serializes an object to the source, hashing the bytes written.
|===



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