ToyodaYuki yytyd

another account of @yuk1ty for work

yytyd / to_string_bench.rs

Created September 12, 2020 15:01

f64 の to_string のベンチマーク（通常の to_string vs Ryu を使った to_string）

	#![feature(test)]
	fn main() {
	println!("Hello, world!");
	}

	fn from_f64_to_string(value: f64) -> String {
	value.to_string()
	}

	fn from_f64_to_string_by_ryu(value: f64) -> String {

yytyd / black_scholes.py

Created September 8, 2020 07:15

Black Scholes Model implementation example written in Python

	from scipy.stats import norm
	from math import exp, log, sqrt

	def BS_Call(S0, sigma, r, q, T, K):
	d1 = (log(S0 / K) + (r - q) * T) / (sigma * sqrt(T)) + sigma * sqrt(T) / 2
	d2 = (log(S0 / K) + (r - q) * T) / (sigma * sqrt(T)) - sigma * sqrt(T) / 2
	call = S0 * exp(-q * T) * norm.cdf(x=d1, loc=0, scale=1) - K * exp(-r * T) * norm.cdf(x=d2, loc=0, scale=1)
	return call

	def BS_Put(S0, sigma, r, q, T, K):

yytyd / example_quadratic.rs

Last active September 6, 2020 15:45

minituna の実装を移行して理解する

	use crate::minituna_v1::Objective;
	use crate::minituna_v1::Trial;
	use crate::minituna_v1::TrialError;

	struct Quadratic;

	impl Objective for Quadratic {
	fn objective(&self, trial: Trial) -> Result<f64, TrialError> {
	let x = trial.suggest_uniform("x", 0.0, 10.0);
	let y = trial.suggest_uniform("y", 0.0, 10.0);

yytyd / cpp.asm

Last active May 27, 2020 02:06

C++ raw pointer vs Rust

yytyd / DualNumbers.scala

Last active November 9, 2019 16:16

DualNumbers

	package model

	case class DualNumbers(a: Double = 0d, b: Double = 0d) {

	def + : DualNumbers = this

	def - : DualNumbers = DualNumbers(-a, -b)

	def <(rhs: DualNumbers): DualNumbers = this < rhs

yytyd / Parser.hs

Last active November 2, 2019 09:19

Packrat Parsing

yytyd / call.rs

Last active October 13, 2019 16:23

普通の macro でちょっとボイラープレートをなくす

	use crate::domain::repository::task::{MixInTaskRepository, TaskRepository};
	use crate::infra::mysql::mysqlcon::{
	MixInMySqlConnection, MySqlConnection, MySqlConnectionDependencies,
	};
	use crate::infra::redis::pool_ctxt::{MixInRedisContext, RedisContext, RedisContextDependencies};
	use crate::infra::repository::task::TaskRepositoryDependencies;

	use crate::{add_deps, add_mixin_impl};

	pub struct TaskBootstrap {}

yytyd / cal.rs

Created October 13, 2019 12:49

	use crate::domain::repository::task::{MixInTaskRepository, TaskRepository};
	use crate::infra::mysql::mysqlcon::{MixInMySqlConnection, MySqlConnectionDependencies};
	use crate::infra::redis::pool_ctxt::{MixInRedisContext, RedisContextDependencies};
	use crate::infra::repository::task::TaskRepositoryDependencies;

	pub struct Bootstrap {}

	impl Bootstrap {
	pub fn call(&self) {
	let a = self.task_repository().find_task_by_id("aaa".to_string());

yytyd / main.rs

Created April 28, 2019 15:41

main.rs

	use std::io;

	#[derive(Debug, Clone, PartialEq, Eq, Hash)]
	struct Loc(usize, usize);

	impl Loc {
	fn merge(&self, other: &Loc) -> Loc {
	use std::cmp::{max, min};
	Loc(min(self.0, other.0), max(self.1, other.1))
	}

yytyd / BuildStatus.java

Last active March 16, 2019 07:40

Java で，幽霊型を使って builder を書く？？

	package com.github.yytyd.status;

	public interface BuildStatus {
	}