spdrman

/*
 Exercise about the Rust error handling.  
 Follow the instructions in the comments "Exercise" below.

 References:
 Book: https://doc.rust-lang.org/nightly/book/ch09-00-error-handling.html
 Rust Standard Library: https://doc.rust-lang.org/stable/std/index.html
 Crates IO: https://crates.io/
 random: https://rust-random.github.io/rand/rand/fn.random.html

spdrman

/* Composable errors via traits

A major challenge (among several) in error handling is how to deal with
disjoint error types produced by the libraries you use (as well as by
your own program) in a consistent and ergonomic way.  Rust's `?` operator
improves the ergonomics of error handling, but it can only be used with
a single error type throughout a single function.  Libraries define their
own error types and they don't know about each other, nor about the calling
program.  So if we want to deal with errors from different libraries as
a single type (an sum or enum of the different underlying error types), we

spdrman

// Transfering ownership of a var to a function, and then back to main()
fn main() {
  let mut array_main: [Vec<u8>; 3] = [vec![1], vec![2, 4], vec![]];
  print(&mut array_main);   //pass as mutable reference to array_main
  println!("{:?}", array_main);
}

fn print(array: &mut [Vec<u8>; 3]) -> &[Vec<u8>; 3] {
  for e in array.iter() {
    println!("{:?}", e)

spdrman

# -------------------------------------------------------------------------------------------------------------------------
#               DOCKER
#
#      https://docs.docker.com/
#
# AWS ECR (Elastic Container Registry) used to store different versions of the same image (tags)
# image is like a template, and a container is what uses the template to start an environment you can interact with
# -------------------------------------------------------------------------------------------------------------------------

docker pull "image_name:version"                        # default is to pull from dockerhub

spdrman

ffmpeg -ss 00:00:01.000 -i input.mov -t 00:00:09.000 output.gif
// max 20sec for github

spdrman

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

spdrman

type Store interface {
  GetFollowers(userID string) ([]models.User, error)
}

type DatabaseStore struct {
  // wrap sql connection
  // or any other driver that your database needs
}

func (s *DatabaseStore) GetFollowers(userID string) ([]models.User, error) {

spdrman

# AUTHENTICATION:
cat ~/.netrc
machine github.com login <login-id> password <token-password>   // This is dangerous and not recommended -- use SSH Auth instead
// Github SSH Auth Guide: https://docs.github.com/en/authentication/connecting-to-github-with-ssh/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent


# SUBMIT BUG FIX:
git clone https://github.com/***.git
git checkout -b bug-fix-brokenthingdescription //git switch -c <new-branch> if moving changed from master
# **DO CODING CHANGES**

spdrman

Contract Killer

The popular open-source contract for web professionals by Stuff & Nonsense

• Originally published: 23rd December 2008
• Revised date: March 15th 2016
• Original post

---

spdrman

# From: http://www.nuclearphynance.com/Show%20Post.aspx?PostIDKey=93267

import win32com.client
import datetime
import pandas

def csiTicker2Number(csiTicker):
ua=win32com.client.Dispatch("UA.API2")
ua.MarketSymbol = csiTicker
ua.IsStock = 1