Dwm::StreamedLengthCapable Class Reference

Interface for classes which can return their streamed length. More...

#include <DwmStreamedLengthCapable.hh>

Public Member Functions
virtual uint64_t	StreamedLength () const =0
	Return the number of bytes that would be written if the object's Write(ostream &), Write(FILE *) or Write(int) member were called.

Detailed Description

Interface for classes which can return their streamed length.

This is often an expensive operation on variable-length data structures, but is useful when we want to store the length of a piece of data before the data itself, since it allows us to skip over the data (or just treeat it as an opaque blob) without interpreting it.

Member Function Documentation

StreamedLength()

virtual uint64_t Dwm::StreamedLengthCapable::StreamedLength ( ) const

pure virtual

Return the number of bytes that would be written if the object's Write(ostream &), Write(FILE *) or Write(int) member were called.

These members would be inherited from StreamWritable, FileWritable or DescriptorWritable, respectively.

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The documentation for this class was generated from the following file:

• DwmStreamedLengthCapable.hh