This is a stopgap project, because the official upstream project has not been updated in the past period of time.
At the same time, this project merged the pr submitted by other fork repo of the upstream project:
Please use upstream official projects first. https://github.com/mgravell/fast-member
In .NET reflection is slow... well, kinda slow. If you need access to the members of an arbitrary type, with the type and member-names known only at runtime - then it is frankly hard (especially for DLR types). This library makes such access easy and fast.
An introduction to the reasons behind fast-member can be found on my blog; example usage is simply:
var accessor = TypeAccessor.Create(type);
string propName = // something known only at runtime
while( /* some loop of data */ )
{
accessor[obj, propName] = rowValue;
}or
// obj could be static or DLR
var wrapped = ObjectAccessor.Create(obj);
string propName = // something known only at runtime
Console.WriteLine(wrapped[propName]);This is pretty common if you are doing object-mapping between an object model and ADO.NET concepts such as DataTable or SqlBulkCopy; loading a DataTable (yes, some people still use it) from a sequence of typed objects can now be as easy as:
IEnumerable<SomeType> data = ...
var table = new DataTable();
using(var reader = ObjectReader.Create(data))
{
table.Load(reader);
}(the Create method offers parameters to control the specific members, if needed)
Or if you want to throw the data into a database as fast as humanly possible:
using(var bcp = new SqlBulkCopy(connection))
using(var reader = ObjectReader.Create(data, "Id", "Name", "Description"))
{
bcp.DestinationTableName = "SomeTable";
bcp.WriteToServer(reader);
}Library emits IL code during runtime. Will not work in constrained Ahead of Time environments. Xamarin iOS and Unity IL2CPP are such.
In addition, we also recommend that you use Leo based on NCC Natasha, a high-performance object reading and writing component.