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Strings in .NET - Things I learned


Here's what I looked like while learning about strings in .NET:

Cat screaming image

What do I think they are?

I can't lie I have no idea how Strings are stored or even compared. But maybe we can find that out.

5 things that I learned while looking at strings

  • Vectors are an iterable list :)
  • Empty is a constant that holds the empty string value. Determined at runtime.
  • Constructors will use FastAllocateString(length) to assign Memory and use Buffer.Memmove to move the char[] value provided into that memory.
  • Comparison EqualsHelper:
    • Compares the byte[] of both strings as a ref.
    • Tries to use the biggest Byte Vectors possible. Hardware must support it.
    • Inspects the 2 strings in the largest "chunks" possible, determined by biggest Byte Vector.
    • Compares the Bytes
    • Uses goto to keep common returns e.g. NotEqual or Equal in one place.
  • I had no clue that you could use Preprocessor Directives to make optional if/else blocks.
  • There were a lot of comments referencing "EE", which apparently means "Execution Engine".
# if DEBUG
    if (isTrue){
# endif

What were the differences?

There's a lot more than meets the eye when it comes to strings. They say you don't know what you don't know, and this exercise opened a can of worms when it comes to understanding .NET.