Pagliacii

#!/usr/bin/env python3
# -*- coding:utf-8 -*-

import itertools

from typing import Optional

from expression import Expr
from fraction import Frac

Pagliacii

#!/usr/bin/env python3
# _*_ coding:utf-8 _*_

import re


def str_to_int(s: str) -> int:
    if not s:
        return 0
    i = ord(s[0]) - ord("0")

Pagliacii

#!/usr/bin/env python3

def cons_stream(head, tail):
    return (head, delay(tail))


def head(s):
    return s[0]

Pagliacii

use std::collections::HashMap;
use std::fmt;
use std::ops::Add;
use std::sync::Arc;

struct Procedure {
    name: String,
    inner_proc: Arc<dyn Fn(Vec<Value>) -> Value>,
}

Pagliacii

#!/usr/bin/env python

import string
import textwrap
import functools


def filter_not_upper(text: str) -> str:
    return "".join(filter(lambda c: c in string.ascii_uppercase, text))

Pagliacii

/* Who is Lorna's father?
 *
 * Mary Ann Moore’s father has a yacht and so has each of his four friends: Colonel Downing, Mr. Hall, Sir Barnacle Hood, and Dr. Parker.
 * 1. Each of the five also has one daughter and each has named his yacht after a daughter of one of the others.
 * 2. Sir Barnacle’s yacht is the Gabrielle.
 * 3. Mr. Moore owns the Lorna.
 * 4. Mr. Hall the Rosalind.
 * 5. The Melissa, owned by Colonel Downing, is named after Sir Barnacle’s daughter.
 * 6. Gabrielle’s father owns the yacht that is named after Dr. Parker’s daughter.
 */

Pagliacii

/* What in fact was the order in which the five girls were placed?
 *
 * Five schoolgirls sat for an examination. Their parents--so they thought--showed an undue degree of interest
 * in the result. They therefore agreed that, in writing home about the examination, each girl should make one
 * true statement and one untrue one. The following are the relevant passages from their letters:
 *
 * 1. Betty: "Kitty was second in the examination. I was only third."
 * 2. Ethel: "You'll be glad to hear that I was on top. Joan was 2nd."
 * 3. Joan: "I was third, and poor old Ethel was bottom."
 * 4. Kitty: I came out second. Mary was only fourth."

Pagliacii

/* Where does everyone live?
 *
 * 1. Baker, Cooper, Fletcher, Miller, and Smith live on different floors of an apartment house that contains only five floors.
 * 2. Baker does not live on the top floor.
 * 3. Cooper does not live on the bottom floor.
 * 4. Fletcher does not live on either the top or the bottom floor.
 * 5. Miller lives on a higher floor than does Cooper.
 * 6. Smith does not live on a floor adjacent to Fletcher's.
 * 7. Fletcher does not live on a floor adjacent to Cooper's.
 */

Pagliacii

/* Houses logical puzzle: who owns the zebra and who drinks water?
 *
 *  1. Five colored houses in a row, each with an owner, a pet, cigarettes, and a drink.
 *  2. The English lives in the red house.
 *  3. The Spanish has a dog.
 *  4. They drink coffee in the green house.
 *  5. The Ukrainian drinks tea.
 *  6. The green house is next to the white house.
 *  7. The Winston smoker has a serpent.
 *  8. In the yellow house they smoke Kool.

Pagliacii

Password Puzzle

Here has a three-digit password. It satisfies all constraints below:

1. 682: One correct digit in the correct position.
2. 614: One correct digit in the wrong position.
3. 206: Two correct digits, neither in the correct position.
4. 738: No correct digits.
5. 870: One correct digit in the wrong position.