Alberto Zaccagni lazywithclass

Clojure transducers

This post is intended to be evaluated step by step rather than read.

(ns transducers)

;; --- DISCLAIMER ---
;; this is for myself rather than for anyone else, if you want what transducers are and how to use them,
;; there are many good resources out there, for example: https://clojure.org/reference/transducers

Bandwidth throttling on FreeBSD

Installing FreeBSD in VirtualBox will help a lot, I've also set

PasswordAuthentication yes
PermitRootLogin yes

followed by a /etc/rc.d/sshd restart to allow root to login from my tmux environment on the host box. Make sure you have sshd installed and running on the virtual image. This way I could have multiple tmux panes and copy / paste working (which wasn't in my case).

One year after RC and plans - lazyblog

[Teaching programming] Lesson six

(define insert-middle
  (lambda (new lat)
    (cons (car lat) (cons new (cdr lat)))))

We've been experimenting with functions, so we're starting to move away from the list manipulation tasks for their own sake.

[Teaching programming] Lesson five - lazyblog

Joy

When everything works and good definitions and examples just flow naturally and the other person seems to be learning everything you're saying.

I don't have anything particular to say, except the fact that the work from the previous weeks seems to be paying off, over all giving her a method improved dramatically the way she deals with implementing functions from scratch. Also, doing exercises as we go in the book it's way more effective than having her solve them on her own.

[Teaching programming] Lesson four - lazyblog

On exercises

They are way too difficult. I've slowed the pace considerably due to a misjudgement of exercises difficulty.

On giving a method

It was her who raised this point and it actually makes a lot of sense, it's a shame I didn't think about this earlier on.

[Teaching programming] Lesson three - lazyblog

Thoughts

There was some confusion on how to use functions and recursion in the end. I didn't spot that previously. I am starting to think that a lot of what "being a teacher" means is to understand when your audience got the idea you're trying to pass on.

So what didn't I understand? For sure the fact that going from

	import * as winston from 'winston';
	import * as Transport from 'winston-transport';

	import { CloudWatch, CloudWatchLogs } from 'aws-sdk';

	export namespace WinstonCloudWatch {

	export type LogObject = {level: string, msg: string, meta?: any};

	export interface CloudWatchIntegration {

	#!/bin/bash

	while true; do
	filename=$(((RANDOM %10) + 1))
	if [ -f $filename ]; then
	mkfile 30m data/$filename
	else
	randomstring=$(LC_CTYPE=C tr -dc A-Za-z0-9 < /dev/urandom \| fold -w ${1:-$(((RANDOM %1000000) +1))} \| head -n 1)
	echo $randomstring >>data/$filename
	fi

	https://github.com/leoliu/ggtags#install-global-and-plugins


	### ctags

	https://github.com/universal-ctags/ctags/blob/master/docs/osx.rst#building-with-homebrew


	### global