maiha

目的

• 任意の日本語文章(UTF-8)を「ひらがな化」する

結論

• ipadic-utf8 で mecab -Oyomi | nkf --hiragana がバランスよさげ

$ ls -l dic
合計 0

maiha

• https://www.zdnet.com/article/how-to-upgrade-from-ubuntu-linux-16-04-to-18-04/

apt update
apt upgrade
apt dist-upgrade
apt autoremove
do-release-upgrade
# +00:01 [RETURN]
# +00:04 y

maiha

(SUMMARY)

Language	Library	Name	Type
C#	CsvHelper	QuoteAllFields	bool
Go	(stdlib)	N/A	N/A
Haskell	cassava	Quoting.QuoteAll	enum
Java	Apache Commons CSV	QuoteMode.ALL	enum
Python	(stdlib)	QUOTE_ALL	enum
Ruby	fastercsv	force_quotes	bool

maiha

std

JSON

• JSON::Type is moved to JSON::Any::Type

-  def [](key) : YAML::Type
+  def [](key) : YAML::Any::Type

maiha

[OK] 1.rb

require "json"

def convert_to_json(obj)
  obj.to_json
end

p convert_to_json(1)   # => "1"
p convert_to_json("x") # => "\"x\""

maiha

情報

• https://kafka.apache.org/documentation/#upgrade_11_exactly_once_semantics
• https://cwiki.apache.org/confluence/display/KAFKA/KIP-98+-+Exactly+Once+Delivery+and+Transactional+Messaging
• https://www.confluent.io/blog/exactly-once-semantics-are-possible-heres-how-apache-kafka-does-it/

概要

• kafka-0.11 で導入された idempotent producer によって同一パーティション内の冪等性を保証
• produce request v3 で導入された transaction 機能により、複数メッセージのアトミック処理を保証

チートシート（擬似コード）

maiha

class CompositeLogger
  def initialize(@loggers : Array(Logger) = loggers)
  end

  macro method_missing(call)
    @loggers.each do |logger|
      logger.{{call}}
    end
  end
end

maiha

active_record.cr - Active Record pattern implementation

• ⚠️ activity last commit is 1 year ago
• MySQL driver : libmysql(C API)
• ✅ agnostic FREE
• ✅ define fields simple
• ✅ table name supports camel class name
• ⬜️ model level query lacks first, count
• ❌ low level adapter hard to access
• ⬜️ relations
• ⚠️ multibytes can't set charset in default (needs monkey patch)

maiha

+ で全バージョン一気にやって欲しい

> + sonatypeRelease
[info] Setting version to 2.12.4
[info] Reapplying settings...
[info] Set current project to http-mock (in build file:/home/maiha/git/maiha/http-mock/)
[info] Nexus repository URL: https://oss.sonatype.org/service/local
[info] Reading staging repository profiles...
[error] Multiple repositories are found:

maiha

implementation

enum Pcap::NextError
  EOF     = -2 # EOF or pcap_breakloop
  ERROR   = -1 #
  TIMEOUT =  0 # should be continued
end

class Pcap::Capture