30 sec. how-to video https://youtu.be/Yk-ypBpMnDg
Just ask Luke in 1 hour. Bring a Raspberry Pi.
Just ask Mom tomorrow at 3pm. Reminder for doctor appt.
# 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}\[\033[00m\]> ' |
a |
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] |
30 sec. how-to video https://youtu.be/Yk-ypBpMnDg
Just ask Luke in 1 hour. Bring a Raspberry Pi.
Just ask Mom tomorrow at 3pm. Reminder for doctor appt.
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 |
from multiprocessing import Process | |
import os | |
import time | |
PRIMES_MAX = 10000000 | |
def primes(n): | |
# info('primes') | |
if n==2: | |
return [2] |
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 |
function makeFun() { | |
var f = []; | |
// closure to freeze vars in async loop | |
var sum = function (n, m) { | |
return function () { | |
console.log("sum=" + (n + m)); | |
} | |
}; |
# 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 |