Komu Wairagu komuw

there used to be a bio here, then the package it depended on was removed from the package repository.

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komuw / three_sigma_sampling.py

Last active December 4, 2020 10:18

In a normal distribution, 99.7% of the values are not anomalous. Which means you can throw away 99.7% without losing context. This is useful in sampling.

	def sample_anomalous(samples):
	"""
	Sampling:
	- Central limit theorem(Alan Turing)
	- 3-sigma rule: In a normal distribution, 99.7% of the values are not anomalous.
	Which means you can throw away 99.7% without losing context.
	- You may also use 2-sigma(95%) or 1-sigma(68%)
	see:
	1. https://youtu.be/inrqE0Grgk0?t=26080 (Emmanuel T Odeke)
	2. https://en.wikipedia.org/wiki/68%E2%80%9395%E2%80%9399.7_rule

komuw / cert-manager.yaml

Created September 16, 2021 07:40

create a golang k8(kubernetes) struct from yaml file

	# gotten from; https://github.com/jetstack/cert-manager/releases/download/v1.3.3/cert-manager.yamlhttps://github.com/jetstack/cert-manager/releases/download/v1.3.3/cert-manager.yaml
	apiVersion: apps/v1
	kind: Deployment
	metadata:
	labels:
	app: cert-manager
	app.kubernetes.io/component: controller
	app.kubernetes.io/instance: cert-manager
	app.kubernetes.io/name: cert-manager
	name: cert-manager

komuw / check_mux.go

Last active November 23, 2021 11:07

golang muxes do not inherit middlewares. Also middlewares are not deduped.

	package main

	import (
	"fmt"
	"net/http"

	"github.com/go-chi/chi"
	"github.com/gorilla/mux"
	)

komuw / erasure_encoding.go

Last active August 3, 2023 08:40

use erasure encoding to survive data loss

	package main

	import (
	"fmt"
	"os"

	"github.com/klauspost/reedsolomon"
	)

	// You can use erasure encoding to;

komuw / encrypt_decrypt.go

Last active July 6, 2022 19:32

encrypt and decrypt in Go

	package main

	import (
	"crypto/aes"
	"crypto/cipher"
	"crypto/rand"
	"crypto/sha256"
	"encoding/base64"
	"errors"
	"fmt"

komuw / fake_crd.yaml

Created November 16, 2022 17:26

fake crd status/health

	apiVersion: apiextensions.k8s.io/v1
	kind: CustomResourceDefinition
	metadata:
	# name must match the spec fields below, and be in the form: <plural>.<group>
	name: komucrontabs.stable.example.com
	spec:
	# group name to use for REST API: /apis/<group>/<version>
	group: stable.example.com
	# list of versions supported by this CustomResourceDefinition
	versions:

komuw / a_sqlite.go

Last active April 19, 2024 06:53

golang and sqlite

	package main

	import (
	"context"
	"database/sql"
	"database/sql/driver"
	"fmt"
	"path"
	"sync"
	"sync/atomic"

komuw / fixed_main_test.go

Last active February 20, 2024 14:34

It's hard to use gomock when there are goroutines involved. gomock sometimes expects them to be called and sometimes it doesn't

	// file: main_test.go
	package main

	import (
	"math/rand"
	"sync"
	"testing"
	"time"

	gomock "github.com/golang/mock/gomock"

komuw / hey.html

Created November 10, 2023 14:06

nested html table

	<!DOCTYPE html>
	<html>
	<style>
	table, th, td {
	border:1px solid;
	}
	</style>
	<body>
	<h2>A basic HTML table</h2>
	<table style="width:100%">

komuw / kenya_electricity_power.py

Last active February 24, 2025 08:19

kenya electricity power back of envelope stats

	# These statistics, figures and projections are back of the envelope
	# see; https://en.wikipedia.org/wiki/Back-of-the-envelope_calculation.
	# Do not rely on them for serious matters.
	# But they should mostly be relatively accurate.

	import math

	# According to EPRA(Energy and Petroleum Regulatory Authority)
	# See: https://www.epra.go.ke/sites/default/files/2024-10/EPRA%20Energy%20and%20Petroleum%20Statistics%20Report%20FY%202023-2024_2.pdf
	peak_demand_for_electricity_in_year_2020 = 1880 # megawatt. This was in july 2020

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