sungiven

library(readxl)
library(dplyr)
library(lubridate)
library(ggplot2)
library(sentimentr)
library(cowplot)
library(RColorBrewer)
library(wordcloud)
library(wordcloud2)
library(tidytext)

sungiven

#!/usr/bin/env python3
# tuples as records & immutable lists

## TUPLES AS RECORDS ##

lax_coordinates = (33.9425, -118.408056)
city, year, pop, chg, area = ("Tokyo", 2003, 32_450, 0.66, 8014)
traveler_ids = [("USA", "31195855"), ("BRA", "CE342567"), ("ESP", "XDA205856")]

# the % formatting operator understands tuples and treats each item as a separate

sungiven

#!/usr/bin/env python3

symbols = "$¢£¥€¤"
output = tuple(ord(symbol) for symbol in symbols)
print(output)
# If the generator expression is the single argument in a function call, there is no
# need to duplicate the enclosing parentheses.

import array

sungiven

#!/usr/bin/env python3

card_ranks = ["A", "K", "Q"]
card_suits = ["♠", "♥", "♦", "♣"]

# cartesian product of cards, arranged by ranks
cards = [(rank, suit) for rank in card_ranks for suit in card_suits]
print(cards)

# cartesian product of cards, arranged by suits

sungiven

#!/usr/bin/env python3

symbols = "fj#@2$¢£¥€¤92f^x"

over_ascii = [ord(s) for s in symbols if ord(s) > 127]

print(over_ascii)

# Using filter/map composition to make the same list created by the listcomp looks
# so much more complex.

sungiven

#!/usr/bin/env python3

x = "EGG"
codes = [ord(x) for x in x]

print(codes)
# output: [69, 71, 71]

print(x)
# x is not clobbered, still bound to 'EGG'

sungiven

#!/usr/bin/env python3

symbols = "fj92hf!TGgq2^#"

# without using listcomp
codes = []
for symbol in symbols:
    codes.append(ord(symbol))
print(codes)

sungiven

#!/bin/bash

if [ -z "$1" ]; then
  echo "Usage: $0 <comment>"
  exit 1
fi

git add .
git commit -m "$1"
git push

sungiven

import math

class Vector:
    def __init__(self, x=0, y=0):
        self.x = x
        self.y = y

    def __repr__(self):
        """Returns the string representation of the obj for inspection."""
        return f"Vector({self.x!r}, {self.y!r})"

sungiven

import collections

Card = collections.namedtuple("Card", ["rank", "suit"])
# `collections.namedtuple` is used to construct a simple class to represent individual cards.
# We can use `namedtuple` to build classes of objects that are just bundles of attributes
# with no custom methods, like a database record.


class FrenchDeck:
    ranks = [str(n) for n in range(2, 11)] + list("JQKA")