earldouglas

Real-World Functional Programming

May 28, 2014

This code is a companion to the APIcon presentation Real-World Functional Programming by @jearldouglas and @kelleyrobinson. The slides are available here.

In this code, we compare imperative and functional implementations of a withdraw function that might be used in a banking ATM.

Imperative transactions

fonylew

#export PATH=$PATH:~/bin
export PATH=/bin:/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin:$PATH
export PYTHONPATH=$PYTHONPATH:/usr/local/lib/python2.7/site-packages
export PATH=${PATH}:$HOME/gsutil
#export EDITOR='subl -w'
alias sl="ls"
alias สห="ls"
alias แก="cd"
alias howmuch="tree .|wc"
alias prettyjson='python -m json.tool'

fonylew

set relativenumber
set number
colorscheme elflord
filetype plugin indent on
set tabstop=4
set shiftwidth=4
set expandtab

" Allow saving of files as sudo when I forgot to start vim using sudo.
cmap w!! w !sudo tee > /dev/null %

sebasmagri

# Fire this using gunicorn falcon_gevent_streaming
# and head to 127.0.0.1:8000 in a browser.
# Requirements:
# pip install falcon gevent

import falcon

import gevent

from gevent.queue import Queue

igor-panteleev

# darkflow/net/build.py
def saveckpt(self):
    self.saver.save(self.sess, './{}_model.ckpt'.format(self.meta['name']))

ricardodeazambuja

# Copyright 2018 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,

garethrees

C   = Ctrl
M   = Alt
DEL = Backspace
http://www.math.utah.edu/docs/info/features_7.html

Essentials

C-b     Move back one character.
C-f     Move forward one character.
DEL     Delete the character to the left of the cursor.

chris-jamieson

• Download Franz for your distribution from MeetFranz.com
• change into the same directory as the downloaded file, then sudo tar -xf Franz-linux-x64-0.9.10.tgz -C /opt/franz
• (optional) wget "https://cdn-images-1.medium.com/max/360/1*v86tTomtFZIdqzMNpvwIZw.png" -O franz-icon.png then sudo cp franz-icon.png /opt/franz
• (optional) sudo touch /usr/share/applications/franz.desktop then sudo vim /usr/share/applications/franz.desktop

paste the following lines into the file, then save the file:

[Desktop Entry]
Name=Franz
Comment=

brbsix

# Create a temporary pyenv virtualenv
mktempenv(){
    [[ $1 =~ ^(-h|--help)$ ]] && {
        echo "Usage: ${FUNCNAME[0]} [VERSION] [NAME]"
        echo 'Create a temporary pyenv virtualenv'
        return 0
    }

    local pyenv_version=${1:-$(pyenv version-name)}
    local venv_name=${2:-$(mktemp --dry-run -d "tmp-$pyenv_version-XXXXXX")}

abn

"""
An asynchronous task manager.

This is a simple implementation for background task handing. No guarentees are
provided for task execution.

This was developed in the course of the work don for the victims project and 
that version is available at 
https://github.com/victims/victims-web/blob/master/src/victims_web/handlers/task.py