2D Arrays in Intermediate Language
The lesson show that accessing a two-dimensional array compiles into a virtual method call to Array.Set rather than a dedicated intermediate language instruction, because Microsoft chose not to reserve IL opcodes for the rarely-used multi-dimensional case. This extra method call is the root cause of the surprising performance penalty measured later.
Previous Module
Basic Performance Optimizations
This Module
Array Performance Optimizations
1D, 2D and Jagged Arrays
1D Arrays in Intermediate Language
2D Arrays in Intermediate Language
Jagged Arrays in Intermediate Language
Demo: Benchmarking Arrays (part 1)
Demo: Benchmarking Arrays (part 2)
Array Performance Recap
For versus Foreach Performance
Foreach on an Array
Demo: Benchmarking For and Foreach
Demo: For and Foreach in Intermediate Language