Provide explicit function signatures for numba #45

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1. mtessmer commented on Jan 6, 2023

   

   mtessmer

   on Jan 6, 2023

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   Like Julia, numba can take advantage of multiple dispatch. This means I can njit function without specifying the type and it will work on several different types.

   @njit
   def myfunc(inp):
       return inp
      
   print(myfunc(10))    # -> 10
   print(myfunc('10'))  # -> '10' 

   But once you specify a signature you can only use types of that signature.

   @njit(''i8(i8)')
   def myfunc(inp):
       return inp
      
   print(myfunc(10))    # -> 10
   print(myfunc('10'))  # -> TypeError: No matching definition for argument type(s) unicode_type

   This is useful because it allows njit functions to be more dynamic. If I specify signatures, then I would need to specify all possible signatures if I want to maintain this functionality. In your specific case, using multiple signatures may not fix the crashing problem, so it may not even be worth it.
2. mtessmer commented on Apr 20, 2023

   

   mtessmer

   on Apr 20, 2023

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   This issue appears to have been resolved with numba/numba#8852
3. mtessmer

   closed this as completedon Apr 20, 2023