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size = (10, 10)
imgs = imgs[:size[0] * size[1]].reshape(size[0], size[1], 28, 28)
result = np.vstack(tuple([np.hstack(tuple(img)) for img in imgs]))

imsave('a.png', result)

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import sys
import numpy as np
import cv2

def extract_region(img, region):
    top_left = np.min(region, axis=0)
    bottom_right = np.max(region, axis=0)

    margin = 2
    region_of_image = img.copy()[top_left[1]-margin:bottom_right[1]+margin, top_left[0]-margin:bottom_right[0]+margin]

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pdftk a.pdf dump_data_utf8 output data.txt
vi data.txt
pdftk a.pdf update_info_utf8 data.txt output b.pdf

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def pi(n):
    half_pi = 0
    for k in range(n + 1):
        m = 1.0
        for i in range(1, k + 1):
            m *= float(2 * i - 1) / (2 * i)
        half_pi += m / (2 * k + 1)

    return 2 * half_pi

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%{
package main

import (
    "fmt"
    "go/scanner"
    "os"
    "go/token"
)

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cat app/models/comment.rb | ruby -r pp -r ripper -e 'pp Ripper.sexp(ARGF.read)'

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set filePath to ""
tell application "QuickTime Player"
	try
		if file path of front document is not equal to missing value then
			set filePath to file path of front document
		end if
	end try
	try
		if path of front document is not equal to missing value then
			set filePath to path of front document

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`echo "#{CSV.generate(col_sep: "\t") {|r| a.to_a[1..-1].each{|ar| r << ar} }}" | pbcopy`

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# coding: utf-8
import glob
import MeCab
import gensim
from gensim import corpora, matutils
import numpy as np
import codecs
import sys

sys.stdout = codecs.getwriter('utf_8')(sys.stdout)

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<?xml version="1.0"?>
<root>
    <vkopenurldef>
      <name>KeyCode::VK_OPEN_URL_GYAZO</name>
      <url type="shell">
        <![CDATA[    /usr/sbin/screencapture /tmp/gyazo-fullscreen.png; /Applications/Gyazo.app/Contents/MacOS/Gyazo /tmp/gyazo-fullscreen.png   ]]>
      </url>
    </vkopenurldef>
    
    <list>