iwazer

オンラインDDLのWaiting for table metadata lockについて

(1) トランザクション中に対象のテーブルをSELECT
A: begin;
A: select * from target_table where id=1;

(2) 対象のテーブルにオンラインDDLを実行
B: CREATE INDEX a_target_table_index ON target_table  (field1, field2);

iwazer

var s = 'this is string.';
console.log(s.split("").reverse().join(""));

iwazer

[alias]
	lg = log --graph --decorate --oneline --abbrev --relative-date --topo-order
	lga = log --graph --decorate --oneline --abbrev --relative-date --topo-order --all
	log --graph --date=short --pretty='%C(yellow)%h%Creset %C(cyan bold)%d%Creset %s %Cgreen[%cd]%Creset' --decorate --all

iwazer

$ rake preload=true
/Users/e-iwazawa/Develop/github/motioncv-test/vendor/opencv/motioncv.gemspec:2: warning: already initialized constant VERSION
    Create ./app/_preload_.rb
         + /Library/RubyMotion/data/ios/7.0/BridgeSupport/AVFoundation.bridgesupport
         + /Library/RubyMotion/data/ios/7.0/BridgeSupport/AssetsLibrary.bridgesupport
         + /Library/RubyMotion/data/ios/7.0/BridgeSupport/CoreGraphics.bridgesupport
         + /Library/RubyMotion/data/ios/7.0/BridgeSupport/Foundation.bridgesupport
         + /Library/RubyMotion/data/ios/7.0/BridgeSupport/UIKit.bridgesupport
         + ./vendor/opencv/framework/opencv2.framework/opencv2.framework.bridgesupport
     Build ./build/iPhoneSimulator-7.0-Development

iwazer

こういうモデルで

ActiveRecord::Schema.define(version: 20130922022806) do

  create_table "models", force: true do |t|
    t.string   "field1"
    t.string   "field2"
    t.datetime "created_at"
 t.datetime "updated_at"

iwazer

#
# This Snippet may do to be able to refer all definitions of libraries
# from RubyMotion REPL, when You paste this Snippet on bottommost of
# your RubyMotion Rakefile.  But it is very slow...
#
# Usage:
#   rake preload=true   # generate preload source file before build simulator
#
#   rake preload:clean  # delete preload source file
#

iwazer

RubyMotionのREPLで全ての定数とClassを参照可能にする拡張（案）

Rakefileに何らかの定義を書くかや起動オプションの指定で、全てのBridgeSupportファイルの定数やクラスなどを参照実行するプログラムがコンパイルされて、REPLから見えるようになるモードがあると便利そうだ。

1. Path: /Library/RubyMotion/data/[ios|osx]/[version]/BridgeSupport/[framework].bridgesupport
2. Rakefileに定義されているFrameworkのBridgeSupportファイルを読み込む

• デフォルトで定義されてる３つ
• 追加されているFramework
• vendor/**/*.bridgesupport

iwazer

  app.vendor_project('vendor/opencv2.framework', :static,
    products: ['opencv2'],
    source_files: ['Headers/imgproc/imgproc_c.h', 'Headers/imgproc/types_c.h',
                   'Headers/motion/MotionCV.h', 'Headers/motion/MotionMat.h'],
    force_load: false
  )

iwazer

# -*- coding: utf-8 -*-

Motion::Project::App.setup do |app|
  :
  app.frameworks += ['AVFoundation','AssetsLibrary']
  app.libs += ['-lc++']
  :
  app.vendor_project('vendor/opencv2.framework', :static,
    products: ['opencv2'],
    force_load: false

iwazer

#import <Foundation/Foundation.h>

@interface MotionMat : NSObject

- (id)init;
- (id)initWithRows:(int)rows cols:(int)cols channels:(int)channels;

- (unsigned char *)data;
- (size_t)stepWithIndex:(int)index;
- (size_t)elemSize;