lukewendling

# Prompt format: username:os:currentdir>
# luke:debian10:myapps>

CURR_DIR=$(basename "$PWD")
ID=$(grep -oP '(?<=^ID=).+' /etc/os-release | tr -d '"')
VERSION=$(grep -oP '(?<=^VERSION_ID=).+' /etc/os-release | tr -d '"')
PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u\[\033[00m\]:$ID$VERSION:\[\033[01;34m\]${CURR_DIR}\[\033[00m\]> '

lukewendling

a

lukewendling

from numba import jit
from numpy import arange
import numpy as np

def sum2d_loop(arr):
    M, N = arr.shape
    result = 0.0
    for i in range(M):
        for j in range(N):
            result += arr[i,j]

lukewendling

Create reminders without typing

30 sec. how-to video https://youtu.be/Yk-ypBpMnDg

Example "Just Ask"

Just ask Luke in 1 hour. Bring a Raspberry Pi.

Just ask Mom tomorrow at 3pm. Reminder for doctor appt.

lukewendling

to start a session
> screen

(now run some commands)

within screen, to detach (and keep session running)
> ctl a + d

outside of screen, list screen sessions
> screen -ls

lukewendling

from multiprocessing import Process
import os
import time

PRIMES_MAX = 10000000

def primes(n):
    # info('primes')
    if n==2:
        return [2]

lukewendling

lukewendling

1.9.3-p545 :001 > (1..2)
 => 1..2 
1.9.3-p545 :002 > (1..2).class
 => Range 
1.9.3-p545 :003 > (1..2).include?(1)
 => true 
1.9.3-p545 :004 > (1..2).include?(3)
 => false 
1.9.3-p545 :005 > 1..2.include?(3)
NoMethodError: undefined method `include?' for 2:Fixnum

lukewendling

function makeFun() {
  var f = [];

  // closure to freeze vars in async loop
  var sum = function (n, m) {
    return function () {
      console.log("sum=" + (n + m)); 
    }
  };

lukewendling

# Demonstrates a basic module mixin and a slightly advanced meta technique:
# the use_socket (line 13) wrapper method connects to a server and issues
# various SocketIO commands. I use instance_eval (line 16) with a recipient
# SocketIO object, not an instance of the caller (NodeMessenger).
# instance_eval runs the passed block with receiver of self, which is a
# SocketIO object.

# The general purpose of this code is to talk to a Socket.io server
require 'SocketIO'
module NodeSocket