Write Any Python Program in One Line and Only Using Lambdas! - Niccolò «Veggero» Venerandi
Write Any Python Program in One Line and Only Using Lambdas! - PyCon Italia 2022
Any program can be written in just one statement and only using lambda.
Sounds weird? The first claim will bring us into what functional programming is (+ map, functools...); the second one will dig into λ calculus.
But why? You will learn the power of λ and how to be concise: a better pythonist!
This talk will cover:
Recursion!
Recursion enables to write simple and concise python code. We will bring many examples of recursion, how to make it fast with memoizing and what tail call optimization is.
Mutable vs Immutable objects!
Since FP uses a completely immutable approach, this might be the right time to learn about tuples, frozendicts, and all immutable data structures.
Higher order functions!
You can pass functions as arguments and return them in functions. There are many functions in python that use this feature: sort, min, max, map, filter etc.
Functools!
Functools is the standard python library containing many useful functional tools. The library functions will be all explained properly, such as partial and reduce, often used in FP.
Lambda calculus!
λ calculus is the first functional language! In fact, a λ calculus interpreter could be written using exclusively the lambda statement (no loops, numbers, standard functions, libraries, anything).
Speaker: Niccolò «Veggero» Venerandi
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