codecakes codecakes

There are many tutorials and articles available online which explain functional programming. Examples show small functions, which are composed into others which again get composed. It is hard to imagine how it would all work, then come the analogies and then the math. While the math is necessary to understand it can be difficult to grasp initially. The analogies on the other hand, (at least for me) are not relatable. Some articles assume the reader knows the different terminologies of FP. Over all I felt it is not inviting to learn.

This introduction is for those who have had a tough time understanding those analogies, taken the plunge to functional programming but still have not been able to swim. This is yet another tutorial on functional programming

Terminology

Functions as first class citizens

Functions are first class means they are just like anyone else, or rather they are not special, they behave the same as say primitives or strings or objects.

Python Logging

notes about logging in python. Put together from reading the logging module source, PEP 282, the official documentation, as well as the blog entries mentioned in References.

Its just intended to collect some notes in one place...so it will (most likely) never comprehensive.

Basic Usage

ANNOUNCEMENT

I have moved this over to the Tech Interview Cheat Sheet Repo and has been expanded and even has code challenges you can run and practice against!

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	:application.ensure_all_started(:ssl)

	{:ok, handle} = :eldap.open(['ldap.example.com'], [{:port, 636}, {:ssl, true}])

	authenticated =
	:ok == :eldap.simple_bind(handle,
	'uid=jeff,ou=users,dc=example,dc=com',
	'notmyrealpassword')

	{:ok, {:eldap_search_result, list_of_entries, _}} =

	defmodule Expng do

	defstruct [:width, :height, :bit_depth, :color_type, :compression, :filter, :interlace, :chunks]

	def png_parse(<<
	0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A,
	_length :: size(32),
	"IHDR",
	width :: size(32),
	height :: size(32),

	#!/usr/bin/env bash
	set -x

	term_handler() {
	echo "Stopping the server process with PID $PID"
	erl -noshell -name "[email protected]" -eval "rpc:call('[email protected]', init, stop, [])" -s init stop
	echo "Stopped"
	}

	trap 'term_handler' TERM INT

	from django import forms
	from django_filters import filters


	filters.LOOKUP_TYPES = [
	('', '---------'),
	('exact', 'Is equal to'),
	('not_exact', 'Is not equal to'),
	('lt', 'Lesser than'),
	('gt', 'Greater than'),

	from sqlalchemy import func
	from sqlalchemy.types import UserDefinedType, Float


	class EasyGeometry(UserDefinedType):

	def get_col_spec(self):
	return "GEOMETRY"

	def bind_expression(self, bindvalue):

	class BSTnode(object):
	"""
	Representation of a node in a binary search tree.
	Has a left child, right child, and key value, and stores its subtree size.
	"""
	def __init__(self, parent, t):
	"""Create a new leaf with key t."""
	self.key = t
	self.parent = parent
	self.left = None