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@jamescourtney jamescourtney released this 23 May 09:08
5.3.0
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FlatSharp version 5.3 is a relatively minor upgrade from version 5.2. It includes an interface change to ISpanWriter.

So, what's new?

Write Through

In limited scenarios, FlatSharp can now make in-place changes to buffers by writing directly back to them. This can help you avoid an expensive parse-update-serialize flow. The restrictions are:

  • Only struct fields are eligible for write through (including nested structs)
  • Write through is only compatible with VectorCacheMutable serialization

bit_flags

FlatSharp now supports the standard flatbuffer bit_flags attribute. This generates enums with the [Flags] attribute.

Memory Savings

PropertyCache and VectorCache now use bit masks for capturing presence/absence of fields. Previously, each field used a dedicated bool (stored as a byte). This decreases memory usage, especially for struct vectors.

ISpanWriter Changes

The signature for ISpanWriter has changed slightly. Most methods now no longer accept a SerializationContext parameter. This change was made to support the write through feature where primitives may be updated without access to a valid SerializationContext. This is nominally a breaking change, but most customers will not experience it as it is not believed that there are external implementations of ISpanWriter.

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