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class RenameOldOrderAddressRelatedColumn < ActiveRecord::Migration | |
def up | |
change_table(:orders, :bulk => true) do |t| | |
t.rename :order_status_code_id, :state | |
t.remove :in_process | |
[:first_name, | |
:last_name, | |
:country, | |
:state].each do |column| | |
t.rename "shipping_#{column}", "origin_shipping_#{column}" |
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per_page = 100 | |
page = 0 | |
total_page = (Product.count.to_f / per_page).ceil | |
total_page.times do | |
products = Product.limit(per_page).offset(page * per_page) | |
bill_items = bill_inventory_valuation_details products # 符合条件的采购入库单数据,此方法的查找也必须对 products 进行批量查找 | |
sell_items = sell_inventory_valuation_details products # 符合条件的销售出库数据 | |
package_items = package_inventory_valuation_details products # 异常出库数据 | |
adjust = adjust_inventory_valuation_details products # 调整仓库数据 |
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def hurst(ts): | |
""" | |
Return the Hurst Exponent of the time series vector ts | |
""" | |
# Create the range of lag values | |
lags = range(2, 100) | |
# Calculate the array of the variance of the lagged differences | |
tau = [sqrt(std(substract(ts[lag:], ts[:-lag]))) for lag in lags] | |
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# check the listening ports | |
# 查看服务器中正在监听的端口: | |
netstat -tupln | |
# check if can connect the port of the host server | |
# 本地查看远程服务器的端口开启是否能够访问 | |
telnet www.xxx.com 3306 | |
# trace how many routes hops | |
# 查看访问的地址经过多少路由 |
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#!/bin/sh | |
param=$1 | |
start() { | |
fpms=`ps aux | grep -i "php-fpm" | grep -v grep | awk '{print $2}'` | |
if [ ! -n "$fpms" ]; then | |
php-fpm |
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import matplotlib.pyplot as plt | |
import numpy as np | |
def view_classify(img, ps, version="MNIST"): | |
''' Function for viewing an image and it's predicted classes. | |
''' | |
ps = ps.data.numpy().squeeze() | |
fig, (ax1, ax2) = plt.subplots(figsize=(6,9), ncols=2) | |
ax1.imshow(img.resize_(1, 28, 28).numpy().squeeze()) |
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def find_cointegrated_pairs(dataframe): | |
""" | |
判断协整关系的函数 | |
返回协整性p值矩阵,协整性强的股票对 | |
:param :dataframe | |
:return :pvalue_matrix, :pairs | |
""" | |
# 得到DataFrame长度 | |
n = dataframe.shape[1] | |
# 初始化p值矩阵 |
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I am attesting that this GitHub handle tsaikoga is linked to the Tezos account tz1hincypNgSCEXBWxDhctvvqDaaTH8WZf42 for tzprofiles | |
sig:edsigu4GSac8nSMEiCxkoo3bEoJNgA1R6etb3MMATrTg8u6aB35RzYMy4gqSkbfmVZzSnUCJNSnCRRQrtnUCVkbvfKBCmZA3Ham |