domodomodomo domodomodomo

## vuepress-webcard.vue
<!--

## usage
### (1)
Specify a relative path.
The Single File Component does not resolve the relative path to the figure, so the img tag is required.
```markdown
<vuepress-card href="../relative/path/to/directory/">
  <img src="../relative/path/to/directory/img.jpg">
</vuepress-card>

## index.js
// original
// https://github.com/vuejs/vuepress/blob/ba7f586e2e8173e5e30c345ea6a92ff213925a2e/packages/%40vuepress/theme-default/util/index.js#L188-L215

/**
 * @param { Route } route
 * @param { Array<string|string[]> | Array<SidebarGroup> | [link: string]: SidebarConfig } config
 * @returns { base: string, config: SidebarConfig }
 */
export function resolveMatchingConfig (regularPath, config) {
  if (Array.isArray(config)) {

## snake_to_kebab.py
def snake_to_kebab(identifier):
    if isinstance(identifier, list):
        container = range(len(identifier))
        for element in container:
            snake_to_kebab(identifier[element])

    elif isinstance(identifier, dict):
        container = [key for key in dict.keys()]
        for element in container:
            snake_to_kebab(getattr(identifier, element))

## scrape_image.py
"""script for scraping images.
1) overview
    input:  site URL
    output: image files
2) usage
    $ python scrape_image.py https://pt.wikipedia.org/wiki/Veneza
3) prerequisite
    $ pip3 install requests, bs4
4) concept
    1) Get thumnail URL.

## isimmutable.py
"""Check the obj is immutable or not by adding new attribute or sequence.

USAGE:
    isimmutable(var)

WARNING:
    This code cannot precisely check immutability,
    because Python has the mechanisms to cutomize attribute access,
    such as property and descriptor.

## append_vs_insert.py
import random
import time

N = 100000
lst1 = [random.randint(0, 9) for _ in range(N)]
lst2 = lst1.copy()


# insert
start1 = time.time()

## list_comparison.py
"""Compare two list."""


def equal_list(lst1, lst2):
    lst1 = lst1.copy()
    for element in lst2:
        try:
            lst1.remove(element)
        except ValueError:
            return False

## immutable_classdecorator.py
import collections


def sample():
    # point 1. 属性はデコレータに文字列で与える。
    @immutable(
        'x1', 'y1', 'x2', 'y2',
        'is_rectangle', 'is_line', 'is_dot')
    class Region(object):
        # point 2. __init__ ではなく、__new__ を使う。

## immutable_metaclass.py
"""
# 概要

    immutable なオブジェクトを生成するメタクラス Immutable

    属性参照は速いけど
    namedtuple:      0.07781907100070384
    自作したクラス:  0.04243788100029633

    インスタンス化は遅い

## emulating_oop.py
"""Emulating Object Oriented Programming with dict and function.

### 0. reference
1) This code was written by refering below content.
   Python のクラスシステム - http://www.shido.info/py/python7.html

### 1. emulating 3 concepts, class, instance and method.
1) class           -> dict
2) instance        -> dict
3) method          -> function
	<!--

	## usage
	### (1)
	Specify a relative path.
	The Single File Component does not resolve the relative path to the figure, so the img tag is required.
	```markdown
	<vuepress-card href="../relative/path/to/directory/">
	<img src="../relative/path/to/directory/img.jpg">
	</vuepress-card>
	// original
	// https://github.com/vuejs/vuepress/blob/ba7f586e2e8173e5e30c345ea6a92ff213925a2e/packages/%40vuepress/theme-default/util/index.js#L188-L215

	/**
	* @param { Route } route
	* @param { Array<string\|string[]> \| Array<SidebarGroup> \| [link: string]: SidebarConfig } config
	* @returns { base: string, config: SidebarConfig }
	*/
	export function resolveMatchingConfig (regularPath, config) {
	if (Array.isArray(config)) {
	def snake_to_kebab(identifier):
	if isinstance(identifier, list):
	container = range(len(identifier))
	for element in container:
	snake_to_kebab(identifier[element])

	elif isinstance(identifier, dict):
	container = [key for key in dict.keys()]
	for element in container:
	snake_to_kebab(getattr(identifier, element))
	"""script for scraping images.
	1) overview
	input: site URL
	output: image files
	2) usage
	$ python scrape_image.py https://pt.wikipedia.org/wiki/Veneza
	3) prerequisite
	$ pip3 install requests, bs4
	4) concept
	1) Get thumnail URL.
	"""Check the obj is immutable or not by adding new attribute or sequence.

	USAGE:
	isimmutable(var)

	WARNING:
	This code cannot precisely check immutability,
	because Python has the mechanisms to cutomize attribute access,
	such as property and descriptor.
	import random
	import time

	N = 100000
	lst1 = [random.randint(0, 9) for _ in range(N)]
	lst2 = lst1.copy()


	# insert
	start1 = time.time()
	"""Compare two list."""


	def equal_list(lst1, lst2):
	lst1 = lst1.copy()
	for element in lst2:
	try:
	lst1.remove(element)
	except ValueError:
	return False
	import collections


	def sample():
	# point 1. 属性はデコレータに文字列で与える。
	@immutable(
	'x1', 'y1', 'x2', 'y2',
	'is_rectangle', 'is_line', 'is_dot')
	class Region(object):
	# point 2. __init__ ではなく、__new__ を使う。
	"""
	# 概要

	immutable なオブジェクトを生成するメタクラス Immutable

	属性参照は速いけど
	namedtuple: 0.07781907100070384
	自作したクラス: 0.04243788100029633

	インスタンス化は遅い
	"""Emulating Object Oriented Programming with dict and function.

	### 0. reference
	1) This code was written by refering below content.
	Python のクラスシステム - http://www.shido.info/py/python7.html

	### 1. emulating 3 concepts, class, instance and method.
	1) class -> dict
	2) instance -> dict
	3) method -> function