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@kuredev
kuredev / toribonati.rb
Last active April 1, 2023 10:02
トリボナッチ数列
def toribonatti(number)
i1 = 0
i2 = 0
i3 = 1
result = []
result << i1
result << i2
result << i3
@kuredev
kuredev / test.go
Created October 1, 2022 15:50
GoでLambdaのリソースポリシーを取得するスニペット
package main
import (
"fmt"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/lambda"
)
@kuredev
kuredev / null_safety.md
Last active May 29, 2022 15:11

Dart について

  • Google製
    • 一部ECMAになってる（古い時代の仕様）
  • 型あり（基本静的型付けだけど、動的型付けも可能。型推論もある）
  • 最新Version: 2.17.0
  • インタプリタ(CLI等）とコンパイラ（スマホ用ビルド等）がある
  • 元々はWeb用のスクリプト言語用途で開発、JSにコンパイル可能(2011年～)
  • Flutterに採用されてブレイク
@kuredev
kuredev / starship.toml
Created April 28, 2022 16:03
starship
#add_newline = false
format = """
[┌───────────────────](bold green)
[│](bold green)$directory$username$aws$git_branch
[│](bold green) """
[git_branch]
format = "[$symbol$branch]($style) "
@kuredev
kuredev / ip_route.rb
Created August 11, 2021 03:13
require "ipaddr"
class RouteTable
def initialize(routes)
@routes = routes
end
# IPAddr or nil
# nil -> direct connected
def next_hop_route_entry(dst_addr)
@kuredev
kuredev / gist:1a6ec9c79a4d66f7f831d670ed9adfc8
Created June 26, 2021 15:53
EtherIP用のIX2015 config
Router(config)# show config
Using 1114 out of 524288 bytes
! NEC Portable Internetwork Core Operating System Software
! IX Series IX2010 (magellan-sec) Software, Version 7.3.27, RELEASE SOFTWARE
! Compiled Apr 27-Thu-2006 14:03:32 JST #2
! Last updated Jun 22-Tue-2021 23:48:46 JST
!
!
timezone +09 00
@kuredev
kuredev / rb_simpletun.rb
Created June 9, 2021 15:43
RubyでIP over UDPトンネリングを実現する
require "socket"
require "rb_tuntap"
PEER = ""
PORT = 9876
tun = RbTunTap::TunDevice.new("tun0")
tun.open(false)
tun.addr = "192.168.0.1"
tun.netmask = "255.255.255.0"
@kuredev
kuredev / test.rb
Created December 31, 2020 15:59
Ruby 3.0 の静的解析テスト用クラス
class Kure1
def self.run
"kure"
end
end
# puts Kure1.run
class Kure2
def initialize(param)
@kuredev
kuredev / show_interface_flags.rb
Created December 16, 2020 15:03
require "socket"
SIOCGIFFLAGS = 0x8913
sock = Socket.new(Socket::AF_INET, Socket::SOCK_DGRAM, 0)
ifreq = ["eth0"].pack("a4")
sock.ioctl(SIOCGIFFLAGS, ifreq)
result = ifreq[Socket::IFNAMSIZ, 0x02].dup
@kuredev
kuredev / test_spec.rb
Last active November 16, 2020 14:53
クラスのモックを作る時(Aws::EC2::Resource を例に)
require "aws-sdk"
RSpec.describe "Test" do
it "test" do
allow(Aws::EC2::Resource).to receive(:new).and_return("Aws1") # ①
allow(Aws::EC2::Resource).to receive(:new).with(region: "ap-northeast-1").and_return("Aws2") # ②
allow(Aws::EC2::Resource).to receive(:new).with(hash_including(region: "ap-northeast-2")).and_return("Aws3") # ③
ec2 = Aws::EC2::Resource.new
pp ec2 # => "Aws1", 引数が無いので①に該当