KOSEKI Kengo koseki

Google Maps に大量のマーカを表示する - Too Many Markers!

Too Many Markers! - Google Maps API — Google Developers https://developers.google.com/maps/articles/toomanymarkers

のメモです。

Introduction

Some applications are required to display a large number of locations or markers. Despite the v3 JavaScript API's significant improvement to performance, naively plotting thousands of markers on a map can quickly lead to a degraded user experience. Too many markers on the map cause both visual overload and sluggish interaction with the map.

VirtualBox マニュアルメモ - 10.1. VirutalBox はどこにファイルを保存するか

https://www.virtualbox.org/manual/ch10.html

10.1. Where VirtualBox stores its files

In VirtualBox, a virtual machine and its settings are described in a virtual machine settings file in XML format.

VM の設定は XML 形式で書いてある。

Vagrant Layout - Django

This is configuration of vagrant-layout plugin. Based on python layout.

Installation

$ vagrant plugin install vagrant-layout
$ mkdir my-project &amp;&amp; cd my-project

libyaml

libyaml でパースできない YAML がある。

xi / libyaml / issues / #11 - libyaml can't parse top level scalar block — Bitbucket
- https://bitbucket.org/xi/libyaml/issue/11/libyaml-cant-parse-top-level-scalar-block

ヘッダ + ボディ は基本的なデータ構造で、 HTTP やメールで使われている。

"Text file busy" error on Windows VirtualBox

While you opening a file in shared folder on Guest OS, you can't move or delete the file.

> vagrant up
> vagrant ssh
$ cd /vagrant
$ ./test.sh &
[1] 2656

Vagrant Layout - Ruby on Rails

This is configuration of vagrant-layout plugin. Based on ruby layout.

Installation

$ vagrant plugin install vagrant-layout
$ mkdir my-project &amp;&amp; cd my-project

Vagrant Layout - Laravel

This is configuration of vagrant-layout plugin. Based on php layout.

Installation

$ vagrant plugin install vagrant-layout
$ mkdir my-project &amp;&amp; cd my-project

	# coding=utf-8

	import sqlite3

	con = sqlite3.connect("test.db")

	sql_init = """
	CREATE TABLE items (
	id integer,
	name text