This part summarizes the fifth chapter of "Programming Rust, 2nd Edition", "References". There was talk of references before, this chapter provides some additional detail around shared and mutable references and lifetimes.
We have encountered references previously. There are two types
r/o references, can be …
This part summarizes the fourth chapter of "Programming Rust, 2nd Edition" and deals with data ownership.
This to me is one of the most fascinating things in Rust: how it strictly tracks which part of the code holds a piece of data, and how that ownership is passed around …
Second part of my Rust learning notes, about Rust datatypes. This corresponds with chapter 3 of Programming Rust, 2nd Edition
Coming from a Python-heavy background, Rust type handling is of course completely different – everything statically typed, and a lot of nuance in basic datatypes. Fortunately the compiler …
Hello Rustlang. I have been circling around this for a while, there's lots of folks I respect that have nothing but nice things to say, and both efficiency and safety have come to the forefront more and more for me. I think the final straw was when I recently …
These are some notes and an example on hooking up Golang programs to the NATS messaging system
NATS messaging enables data sharing via a publish/subscribe mechanism across different processes, systems and platforms. NATS core offers an "at most once" quality of service. If a subscriber is …
Actor systems model concurrency with actors. In such a system, actors are independent objects that communicate asynchronously with each other via message passing.
An actor can:
Receive and send messages asynchronously
Change private state
Create new actors
Each actor has an address under which it can …
TIL that the Python requests library is able to dump request/response details to the debug log - quite useful for development and debugging of http clients.
Switch it on with something like this:
import requests
import logging
try: # for Python 3
from http.client import HTTPConnection
except ImportError:
from httplib …The other day I had to track down weird behaviour with Neutron security groups in one of our clouds, and thought to share notes on debugging those and on Neutron networking in general 1.
Recall that on a compute …
I love Ceph to pieces! I don't love it's docs that much though, and I find the multi-level subcommands unintuitive at times. Quick, is it "ceph pg query x.y" or "ceph pg x.y query"? There's some good docs out there, but to me they feel scattered and it's …