Function Programming in Python

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

The built-in function map applies a function to each element of an iterable. map is not useful mostly of time as Python has list comprehension, etc. map support iterating multiple iterables at the same time.
```
 map(f, sequence1, sequence2)
```
which is equivalent to
```
 [f(x1, x2) for x1, x2 in zip(sequence1, sequence2)]
```
There are some useful functions in the modules functools and operator. Below is the functional programming way of summing all elements in an array.
```
 functools.reduce(operator.add, L)
```

References¶