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 / print_array_list.zig

Created May 15, 2019 08:26

we can print a buffer but not ArrayList

	const std = @import("std");
	const warn = std.debug.warn;

	pub fn main() !void {
	// 1. This works
	var buf = try std.Buffer.init(std.debug.global_allocator, "");
	defer buf.deinit();
	try buf.append("hello");
	warn("buffer:\n\t {}", buf);

komuw / instance_creator.py

Last active June 19, 2019 15:02

python create a new class instance inside same class

	import copy


	# see: https://stackoverflow.com/questions/13260557/create-new-class-instance-from-class-method
	class Animal(object):
	request_id = "Original_Animal"

	def reproduce(self):
	"""
	gives birth to new instances of Animal

komuw / BreachHandler.py

Last active August 24, 2019 21:50

create a breach handler for python's standard logging library

	import time
	import logging
	import collections

	# Inspired by; https://tersesystems.com/blog/2019/07/28/triggering-diagnostic-logging-on-exception/
	# Also see; https://docs.python.org/3.6/library/logging.handlers.html#logging.handlers.MemoryHandler
	# Also see; https://github.com/komuw/naz/blob/e0666550396400f86b9a547932bb9075c520a5d9/naz/log.py#L159-L230
	class BreachHandler(logging.StreamHandler):
	"""
	Log handler that buffers logs in an in-memory ring buffer until a trigger.

komuw / spaced_repetition.md

Last active October 3, 2024 06:24

spaced_repetition.md

komuw / go_errors_with_stacktrace.go

Created November 9, 2019 15:36

Golang errors with stack traces

	package main

	import (
	"fmt"
	"runtime"
	"strconv"
	"strings"
	)

	/*

komuw / panic_handler.go

Last active December 16, 2020 16:58

global panic handler in Go

	package main

	import "fmt"

	// Usage:
	//
	// func main() {
	// defer panicHandler()
	// }
	//

komuw / fdatasync_vs_fsync.go

Last active July 7, 2021 15:32

Benchmark fdatasync vs fsync

	package main

	import (
	"log"
	"math/rand"
	"os"
	"syscall"
	"testing"
	"time"

komuw / complex_types.go

Last active October 29, 2020 13:29

pointer receiver versus value receiver benchmarks

	package main

	import (
	"fmt"
	"math"
	"testing"
	)

	/* ---------- package ---------- */
	type h struct {

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

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