| class Node: | |
| def __init__(self, data): | |
| self.data = data | |
| self.left = None | |
| self.right = None | |
| def __str__(self): | |
| return str(self.data) | |
| def create_tree(array): |
// SayHello implements helloworld.GreeterServer
func (s *server) SayHello(ctx context.Context, in *pb.HelloRequest) (*pb.HelloReply, error) {
log.Printf("Received: %v", in.GetName())
// return &pb.HelloReply{Message: "Hello " + in.GetName()}, nil
return nil, fmt.Errorf("hoge")
}errorを返すと、クライアントにエラーの内容を伝播してくれる。
| # Microphone Realtime background noise reduction script | |
| # author Luigi Maselli - https://grigio.org licence: AS-IS | |
| # credits: http://askubuntu.com/questions/18958/realtime-noise-removal-with-pulseaudio | |
| # run as: sudo && pulseaudio -k | |
| # wget -qO - https://gist.github.com/adrianolsk/bfa32f3227dc674eff72a2008f6c0316 | sudo bash && pulseaudio -k | |
| sudo cp /etc/pulse/default.pa /etc/pulse/default.pa.bak | |
| sudo cat <<EOT >> /etc/pulse/default.pa | |
| load-module module-echo-cancel source_name=noechosource sink_name=noechosink |
| // memo: Applicative Functor型クラス | |
| trait Applicative[F[_]] { | |
| def point[A](a: A): F[A] | |
| def ap[A, B](fa: F[A])(f: F[A => B]): F[B] | |
| def map[A, B](fa: F[A])(f: A => B): F[B] = ap(fa)(point(f)) | |
| } | |
| // memo: Applicative則 | |
| // https://eed3si9n.com/herding-cats/ja/Applicative.html |
| .PHONY: setup | |
| setup: | |
| sudo apt-get update | |
| sudo apt-get install -y unzip build-essential libsnmp-dev p7zip-full # Debian-based distros | |
| .PHONY: mibs | |
| mibs: | |
| git clone https://github.com/prometheus/snmp_exporter.git snmp_exporter | |
| cd snmp_exporter/generator; make mibs |
| #!/bin/python3 | |
| import subprocess | |
| import re | |
| EFIBOOTMGR = 'efibootmgr' | |
| SHOW_BOOTMGR = [EFIBOOTMGR, '-v'] | |
| BOOT_CURRENT_RE = re.compile(r'^BootCurrent: (?P<current>\d+)$') | |
| TIMEOUT_RE = re.compile(r'^Timeout: (?P<timeout>\d+) seconds$') | |
| BOOT_ORDER_RE = re.compile(r'^BootOrder: (?P<order>[\d,]+)$') |
| # 180609 |
| URxvt*font: xft:Source Code Pro:size=12:antialias=true | |
| URxvt*boldFont: xft:Source Code Pro:size=12:style=bold:antialias=true | |
| URxvt*termName: rxvt-256color | |
| URxvt*xftAntialias: true | |
| URxvt*background: #3f3f3f | |
| URxvt*foreground: #dcdccc | |
| URxvt*cursorColor: #aaaaaa | |
| URxvt*colorUL: #366060 | |
| URxvt*underlineColor: #dfaf8f | |
| URxvt*color0: #3f3f3f |
| ;; 2.4.2 タグ付きデータ | |
| ;; type-tag と contents という手続きを持っていると想定する。 | |
| ;; type-tag: データオブジェクトからタグを抽出するもの。 | |
| ;; contents は実際の中身。 | |
| (define (attach-tag type-tag contents) | |
| (cons type-tag conents)) | |
| (define (type-tag datum) | |
| (if (pair? datum) | |
| (car datum) | |
| (error "Bad tagged datum: TYPE-TAG" datum))) |
| ;; 2.4.1 | |
| (define (add-complex z1 z2) | |
| (make-from-real-imag (+ (real-part z1) (real-part z2)) | |
| (+ (imag-part z1) (imag-part z2)))) | |
| (define (sub-complex z1 z2) | |
| (make-from-real-imag (- (real-part z1) (real-part z2)) | |
| (- (imag-part z1) (imag-part z2)))) |