acdimalev

# Python 3 is an iterator-first language.
# `bind` and `join` are reaching wider adoption under the names `flatmap` and `flatten`.

def flatmap(f, xs):
    return (y for x in xs for y in f(x))

def flatten(xs):
    return (y for x in xs for y in x)

# These don't match the `zip(*args)` behavior of `map`, but I have never actually seen that used.

acdimalev

fix = lambda f: lambda x: f(fix(f), x)


# presume Python's obsession with iterators...

join = __import__('itertools').chain.from_iterable
bind = lambda f, xs: join(map(f, xs))


# I/O primitives...

acdimalev

quoted = lambda s: '"' + str.replace(s, '"', '\\"') + '"'
unquoted = lambda s: str.replace(s[1:-1], '\\"', '"')

slash = lambda s: str.replace(s, '\\', '\\\\')
unslash = lambda s: str.replace(s, '\\\\', '\\')

shell_escape = lambda s: quoted(slash(s))
shell_unescape = lambda s: unslash(unquoted(s))

acdimalev

import socket
import pyroute2

ip = pyroute2.IPRoute()

addrs = [
    '/'.join((
        dict(addr.get('attrs', [])).get('IFA_ADDRESS'),
        str(addr.get('prefixlen')),
    ))

acdimalev

def bits(measurement, unit):
    '''Jinja filter to convert measurement from one unit to another.

    Example:
    
        {{ '1GiB' | bits('MiB') }}
            -> 1024
    '''
    return first(convertTo(unit)(decode(measurement)))

acdimalev

#!/usr/bin/env python3

# http://web.stanford.edu/class/ee380/Abstracts/170201-slides.pdf

from math import inf, log


NBITS = 8
ES = 1

acdimalev

from dataclasses import field


@dataclass
class InMessage:
    line: str
    prefix: str
    command: str
    params: list[str]

acdimalev

#!/usr/bin/env python3

import crypt, random, sys

(_, nick) = sys.argv

password = '{:016x}'.format(random.randrange(256 ** 8))
crypted = crypt.crypt(password)
passwd_entry = ':'.join([nick, crypted])

acdimalev

File Format

    |--  32 bits  --|

    +---------------+
    | file magic    |  0xa42d19a9
    |---------------|
    | record magic  |  see Record Magic
    |---------------|
    | total records |  actual number of stored records

acdimalev

all() {
  case $# in
    0) false ;;
    *) (
      result=0
      while read x; do
        if ! "$@" "$x"; then
          result=1
        fi
      done