Dictionary with delegate or switch?

Question

I am writing a parser which calls some functions dependent on some value.

I can implement this logic with simple switch like this:

switch(some_val)            


        

Answer 1

In terms of access, they're identical: both just check if that specific value has a corresponding result. However, a Dictionary will throw an out-of-bounds exception if you try to access a non-existent key.

The choice should primarily be on re-usability. If you only need to make this branching logic at one point, then using a switch-case is probably makes more sense than storing a variable. If you need to access it repeatedly in separate points, then use the Dictionary to save yourself from just re-pasting the switch-statement repeatedly.