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also null check (??) applied if possible also addes some missing validation
- is/is not null applied - some "result is never used" warnings eliminated - summaries to public extension methods added - other things
- less enumerations - less collections created
repeat enumerator is more efficient because it takes into account number of repeats as actual count of items in produced sequence
There are three dotnet alternatives which work better - Repeat, Append and Prepend, which cover all the possible scenarios and track actual number of items in result sequence
Buffer collection on stack that acts like usage map of indexes also serves as orderer. More memory efficient solution and faster approach for at least portion of queries
# Conflicts: # ChangeLog/7.2.1-dev.txt # Orm/Xtensive.Orm.Tests/Storage/Prefetch/PrefetchTest.cs
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Adds LeftJoinEx extension as alternative for LeftJoin extension for being prepared for .Net 10
Some types and members marked Obsolete
Incoming parameter validation based on standard mechanisms instead of ArgumentValidator
Improved collections/enumerables usage, should be less memory used and performance increased