ymgyt’s gists

ymgyt / binominal_distribution.rs

Created September 13, 2020 07:29

Draw a binomial distribution as a svg graph

	use itertools::Itertools;
	use plotlib::page::Page;
	use plotlib::repr::Plot;
	use plotlib::style::{LineStyle, PointMarker, PointStyle};
	use plotlib::view::ContinuousView;

	fn main() {
	let p: f64 = 0.5;
	let q = 1. - p;
	let n = 20;

ymgyt / console_coloring.go

Created March 8, 2018 11:51

coloring console output example

	package main

	import "fmt"

	var colorRed = string([]byte{27, 91, 57, 55, 59, 51, 49, 59, 49, 109})
	var colorReset = string([]byte{27, 91, 48, 109})

	func main() {
	fmt.Printf("%s messag%s normal\n", colorRed, colorReset)
	}

ymgyt / builder_build.go

Created March 8, 2018 11:36

exec.Command example

	func (b *builder) Build() error {
	args := append([]string{"go", "build", "-o", filepath.Join(b.wd, b.binary)}, b.buildArgs...)

	var command *exec.Cmd
	if b.useGodep {
	args = append([]string{"godep"}, args...)
	}
	command = exec.Command(args[0], args[1:]...)

	command.Dir = b.dir

ymgyt / file1.txt

Last active November 24, 2017 13:54

Goからlocalのtest用DB(MySQL)をdockerで起動する ref: https://qiita.com/YmgchiYt/items/cc97142614f5b61a69e9

	# containerは存在しない
	docker container ls -a
	CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES

	# 起動
	go run main.go
	2017-11-23T02:30:38.881+0900 INFO workspace/main.go:52 local_docker_db {"status": "starting"}
	2017-11-23T02:30:38.934+0900 DEBUG workspace/main.go:77 local_docker_db {"container_info": "not_found", "container": "myproject-mysql-db"}
	2017-11-23T02:30:39.428+0900 DEBUG workspace/main.go:107 local_docker_db {"exec docker cmd": "docker container run --detach --name myproject-mysql-db --publish 3307:3306 --mount type=bind,source=/tmp/docker_db,target=/var/lib/mysql --env MYSQL_USER=gopher --env MYSQL_PASSWORD=golangorgohome --env MYSQL_INITDB_SKIP_TZINFO=yes --env MYSQL_ALLOW_EMPTY_PASSWORD=yes mysql:5.6", "stdout": "4a7336c9364b14df0813463161335d8690d9c6e777f5c631bb406b5f55d2e181\n", "stderr": ""}

ymgyt / file0.go

Last active November 24, 2017 13:55

Goでモンティ・ホール問題を試してみる ref: https://qiita.com/YmgchiYt/items/1ce7d39309de5406953e

	func game(change bool) int {
	choice := rand.Intn(3)
	prize := rand.Intn(3)

	if change {
	var opened int
	for {
	opened = rand.Intn(3)
	if opened != prize && opened != choice {
	break

ymgyt / context.go

Created October 4, 2017 15:53 — forked from iamralch/context.go

An example that illustrates how to work with https://godoc.org/golang.org/x/net/context

 package main
 import (
 	"bufio"
 	"fmt"
 	"os"
 	"strings"
 	"time"
 	"golang.org/x/net/context"

ymgyt / safebuffer.go

Created October 4, 2017 10:25 — forked from arkan/safebuffer.go

Golang: Buffer is a goroutine safe bytes.Buffer

	package safebuffer

	import (
	"bytes"
	"sync"
	)

	// Buffer is a goroutine safe bytes.Buffer
	type Buffer struct {
	buffer bytes.Buffer

ymgyt / safebuffer.go

Created October 4, 2017 10:25 — forked from arkan/safebuffer.go

Golang: Buffer is a goroutine safe bytes.Buffer

	package safebuffer

	import (
	"bytes"
	"sync"
	)

	// Buffer is a goroutine safe bytes.Buffer
	type Buffer struct {
	buffer bytes.Buffer

ymgyt / check.go

Created October 4, 2017 05:44 — forked from mattes/check.go

Check if file or directory exists in Golang

	if _, err := os.Stat("/path/to/whatever"); os.IsNotExist(err) {
	// path/to/whatever does not exist
	}

	if _, err := os.Stat("/path/to/whatever"); err == nil {
	// path/to/whatever exists
	}

ymgyt / subcommand.go

Created September 28, 2017 08:34 — forked from iamralch/subcommand.go

flag package: subcommand example

	package main

	import (
	"flag"
	"fmt"
	"os"
	)

	func main() {
	askCommand := flag.NewFlagSet("ask", flag.ExitOnError)

Yuta Yamaguchi ymgyt