okuramasafumi

class Module
  def define_mixable_method(name:, calls:, main:)
    define_method(name) do |&block|
      method_candidates = calls.map {|name| method(name) }
      block.call(main, method_candidates).each do |m|
        m.call
      end
    end
  end
end

okuramasafumi

module EachWithEffect
  DEFAULT = Object.new.freeze

  def each_with_effect(effect_handlers = {}, &block)
    effect = catch(:effect) do
      block.call(self.peek)
    end
    if effect
      handler = effect_handlers.find{ |k, v| k === effect }&.last || effect_handlers.fetch(DEFAULT)
      alternative = handler.call(effect) if handler

okuramasafumi

class WithEffect
  def initialize
    @list = ["Foo", "Bar", 42, "Baz"]
  end

  def process_item(item)
    throw(:item_not_string, 42) unless item.is_a?(String)

    puts item
  end

okuramasafumi

# GIT heart FZF
# -------------

is_in_git_repo() {
  git rev-parse HEAD > /dev/null 2>&1
}

fzf-down() {
  fzf --height 50% --min-height 20 --border --bind ctrl-/:toggle-preview "$@"
}

okuramasafumi

# ライブラリコード
module MyDSL
  class ClassMacro < Module
    class StoredItem
      attr_reader :name
      attr_accessor :context
      def initialize(name, block_args: [], &block)
        @name = name
        @block_args = block_args
        @block = block

okuramasafumi

require 'benchmark'

huge_array = (1..10000000).to_a

Benchmark.bmbm do |x|
  puts "Adding all numbers"
  x.report(:sum) { huge_array.sum }
  x.report(:plus_equal) { sum = 0; huge_array.each {|i| sum += i }; sum}
  x.report(:inject) { huge_array.inject(:+) }
  x.report(:inject_block) { huge_array.inject(0) {|memo, i| memo + i} }

okuramasafumi

# frozen_string_literal: true

source "https://rubygems.org"

git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }

gem "rails"
gem "sqlite3"
gem "jbuilder"
gem "active_model_serializers"

okuramasafumi

class HogeSerializer < ActiveModel::Serializer
  attributes :id, :hogehoge
  has_many :fugas do |fuga|
    fuga.attributes :id, :fugafuga
    fuga.has_many :bars do |bar|
      bar.attributes :id, :barbar
    end
  end
end

okuramasafumi

Keynote: Vim Renaissance
By Prabir Shrestha

"I'm thankful to people in vim-jp"
"With LSP, you don't have to configure for every language!"
"If you're not using LSP, go use it!"

It works with every language, every OS, in Vim8 or Neovim...Great!
He talks about vim so passionately, that's awesome.
He says "Go use it!" so many times, I'd like to use LSP more!

okuramasafumi

diff --git a/proc.c b/proc.c
index 19ce7a1d19..3eb8c9445d 100644
--- a/proc.c
+++ b/proc.c
@@ -1196,6 +1196,24 @@ iseq_location(const rb_iseq_t *iseq)
     return rb_ary_new4(2, loc);
 }
 
+static VALUE
+iseq_code_location(const rb_iseq_t *iseq)