Yamada Takahito YamadaTakahito

effective javaを読んだ時のメモ

	import numpy as np
	import imageio

	class Video:
	def __init__(self, path, mask_path):
	reader = imageio.get_reader(path)
	meta_data = reader.get_meta_data()
	self.width, self.height = meta_data['size']
	self.frame = meta_data['nframes']
	self.fps = meta_data['fps']

	def conver_n_bit(img, n=1):
	count = 2**n
	extents = np.linspace(0, 255, num=count+1, dtype=int)
	pixels = np.linspace(0, 255, num=count, dtype=int)

	output = np.zeros(img.shape, dtype=int)
	for i in range(count):
	pixel = pixels[i]
	bool_arr = (extents[i] <= img) & (img < extents[i+1])
	output += bool_arr * pixel

	def main():
	rootfolder = Folder('root')
	binfolder = Folder('bin')
	rootfolder.add(binfolder)

	binfolder.add(File('vi', 10000))
	binfolder.add(File('latex', 20000))

	rootfolder.accept(ListVistor())

	from abc import ABCMeta, abstractmethod


	def main():
	try:
	print('Making root entries')
	rootfolder = Folder('root')
	binfolder = Folder('bin')
	tmpfolder = Folder('tmp')
	usrfolder = Folder('usr')

	class ListVistor(Vistor):
	def __init__(self):
	self.currentfolder = ''

	def visit(self, file=None, folder=None):
	if file is not None:
	print('{}/{}'.format(self.currentfolder, file))
	return
	elif folder is not None:
	print('{}/{}'.format(self.currentfolder, folder))