Narendra Joshi narendraj9

Conquering Kubernetes with Emacs

Specific Annoying workflow

Listing pods with kubectl get pods, then select a pod name and copy paste it into kubectl logs [pod name]

Why?

I want to streamline my workflow and stop using the terminal
learn more about kubernetes
main kubernetes extension for Emacs out there is greedy for permissions

Kafka 0.11.0.0 (Confluent 3.3.0) added support to manipulate offsets for a consumer group via cli kafka-consumer-groups command.

List the topics to which the group is subscribed

kafka-consumer-groups --bootstrap-server <kafkahost:port> --group <group_id> --describe

Note the values under "CURRENT-OFFSET" and "LOG-END-OFFSET". "CURRENT-OFFSET" is the offset where this consumer group is currently at in each of the partitions.

Reset the consumer offset for a topic (preview)

Rich Already Answered That!

A list of commonly asked questions, design decisions, reasons why Clojure is the way it is as they were answered directly by Rich (even when from many years ago, those answers are pretty much valid today!). Feel free to point friends and colleagues here next time they ask (again). Answers are pasted verbatim (I've made small adjustments for readibility, but never changed a sentence) from mailing lists, articles, chats.

How to use:

The link in the table of content jumps at the copy of the answer on this page.
The link on the answer itself points back at the original post.

Table of Content

This document has moved!

It's now here, in The Programmer's Compendium. The content is the same as before, but being part of the compendium means that it's actively maintained.

These links no longer work. Springer have pulled the free plug.

Graduate texts in mathematics

duplicates = multiple editions

A Classical Introduction to Modern Number Theory, Kenneth Ireland Michael Rosen

##Reactive System Design Links

#Articles and Papers

The Reactive Manifesto: http://www.reactivemanifesto.org/
https://en.wikipedia.org/wiki/Reactive_programming
https://en.wikipedia.org/wiki/Functional_reactive_programming
Design Methods for Reactive Systems book slides: http://booksite.elsevier.com/9781558607552/slides/slides.pdf
Programming without a callstack Event Driven Architectures By G Hohpe: http://www.eaipatterns.com/docs/EDA.pdf
On Distributed Memory Systems: http://blog.paralleluniverse.co/2012/07/10/on-distributed-memory/
Disruptor source code, papers and articles: https://lmax-exchange.github.io/disruptor/

Use magit-ediff to resolve merge conflicts

Use magit-ediff or 'e' on an unmerged item to resolve merge conflicts with ediff. Magit will set up an ediff with three buffers A, B and C. A and B are the original (conflicting) files, and C is the conflicted merge.

Use 'n'/'p' to move to the next/previous conflict, use 'a'/'b' to choose which changes (those in a A or B) should be the ones to keep in the merged file.

You can always just switch to buffer C and edit what the merged version should look like.

	"""
	Minimal character-level Vanilla RNN model. Written by Andrej Karpathy (@karpathy)
	BSD License
	"""
	import numpy as np

	# data I/O
	data = open('input.txt', 'r').read() # should be simple plain text file
	chars = list(set(data))
	data_size, vocab_size = len(data), len(chars)

	-- these imports are needed for the bottom section

	import Data.Monoid
	import Data.Foldable
	import Data.Tree
	import Control.Applicative

	-- ok there's a super easy of defining length

	lengthRecursiveIterator [] = 0

	(defn with-local-redefs-fn
	[a-var its-new-value func]
	(cast clojure.lang.IFn @a-var)
	(alter-meta! a-var
	(fn [m]
	(if (::scope-count m)
	(update-in m [::scope-count] inc)
	(assoc m
	::scope-count 1
	::thread-local-var (doto (clojure.lang.Var/create @a-var)