tanyuan

Smart Caps Lock: Remap to Control AND Escape (Linux, Mac, Windows)

把 Caps Lock 變成智慧的 Control 以及 Escape ：

• 單獨輕按一下就是 Escape 。
• 若按下時同時按著其他鍵，就會是 Control 。

這應該是 Vim 和 Emacs 的最佳解了！(Emacs? Bash 的快捷鍵就是 Emacs 系列的)

• Send Escape if you tap Caps Lock alone.

popravich

The standard names for indexes in PostgreSQL are:

{tablename}_{columnname(s)}_{suffix}

where the suffix is one of the following:

• pkey for a Primary Key constraint;
• key for a Unique constraint;
• excl for an Exclusion constraint;
• idx for any other kind of index;

lavalamp

There are three easy to make mistakes in go. I present them here in the way they are often found in the wild, not in the way that is easiest to understand.

All three of these mistakes have been made in Kubernetes code, getting past code review at least once each that I know of.

1. Loop variables are scoped outside the loop.

What do these lines do? Make predictions and then scroll down.

func print(pi *int) { fmt.Println(*pi) }

dolzenko

require 'json'
require 'set'

myself = `go list`.strip

deps = Set.new
`go list ./...`.each_line do |dep|
  pdeps = JSON.parse(`mgmt go list -json #{dep}`)
  deps += pdeps['Deps']
  deps += pdeps['TestImports'] if pdeps['TestImports']

paskal

# read more at https://terrty.net/2014/ssl-tls-in-nginx/
# latest version on https://gist.github.com/paskal/628882bee1948ef126dd/126e4d1daeb5244aacbbd847c5247c2e293f6adf
# security test score: https://www.ssllabs.com/ssltest/analyze.html?d=terrty.net
# your nginx version might not have all directives included, test this configuration before using in production against your nginx:
# $ nginx -c /etc/nginx/nginx.conf -t

server {
        # public key, contains your public key and class 1 certificate, to create:
        # (example for startssl)
        # $ (cat example.com.pem & wget -O - https://www.startssl.com/certs/class1/sha2/pem/sub.class1.server.sha2.ca.pem) | tee -a /etc/nginx/ssl/domain.pem > /dev/null

axgle

What is sync.Pool in golang and How to use it

sync.Pool (1/2)

Many Go libraries include custom thread-safe free lists, like this:

var objPool = make(chan *Object, 10)

func obj() *Object {

select {

HeroicEric

RSpec Helper Example

Here's an example of a rspec test helper that will let you sign in as a given user.

Create spec/support/helpers/authentication.rb with the following:

module Helpers
  module Authentication
    def sign_in_as(user)

dolzenko

ruby -rwebrick -e'WEBrick::HTTPServer.new(Port: 8000, DocumentRoot: Dir.pwd).start'

dolzenko

module Net
  class HTTP
    alias_method '__initialize__', 'initialize'

    def initialize(*args,&block)
      __initialize__(*args, &block)
    ensure
      @debug_output = $stderr ### if ENV['HTTP_DEBUG']
    end
  end

dolzenko

['mysql2', 'sequel', 'pp'].each(&method(:require))
DB = Sequel.connect('mysql2://root@localhost/tmp')
DB.tables.each {|t| DB.drop_table(t) }

def t(name, columns, *rows)
  DB.create_table(name) do
    columns.each.with_index do |column, ind|
      type = rows[0][ind].class.to_s
      send type, column
    end