SWIG is a software development tool that simplifies the task of interfacing different languages to C and C++ programs. 1.  The SWIG %module directive specifies the name of the Python module    --this module consists of a Python source file example.py…

转自:https://severalnines.com/blog/creating-new-modules-using-postgresql-create-extension Extensibility is one of the most powerful feature in PostgreSQL. You can add new functionality for a particular use case by using contrib module and install it us…

Creating a Chrome extension requires a manifest.json file which defines how your extension will behave. With a minimal setup, you can already manipulate pages and change elements. This lesson walks you through creating a manifest.json file which will…

https://assist-software.net/blog/how-create-pdf-files-python-django-application-using-reportlab CONTENTS Introduction How to serve the file for download How to create a PDF document How to add paragraphs and spaces in between How to add a table How t…

How to install Flask Use Flask to create a minimal website Build routes in Flask to respond to website endpoints Use Variable Rules to pass parts of the URL to your functions as keyword parameters Install: pip install Flask Development Mode: run_loca…

A set is an unordered collection with no duplicate items in Python. In this lesson, you will learn how to create them, and perform basic operations to determine members in the set and compare the values from different sets. # create a set animals = {…

Print statements will get you a long way in monitoring the behavior of your application, but logging will get your further. Learn how to implement logging in this lesson to generate INFO, WARNING, ERROR, and DEBUG logs for your application. import sy…

在一个系统中,如果同时存在python2和python3,在cmd.exe程序下执行pip.pip2或者pip3均会报错. 如何解决: 如果是在python3环境下,使用pip安装扩展库,可以使用以下指令: python3 -m pip install django 示意图: 如果是在python2环境下,使用pip安装扩展库,可以使用以下指令: python2 -m pip install django 示意图: 卸载操作: python3 -m pip uninstall django py…

目录 9 SWIG 库 9.1 %include 指令与库搜索路径 9.2 C 数组与指针 9.2.1 cpointer.i 9.2.2 carrays.i 9.2.3 cmalloc.i 9.2.4 cdata.i 9.3 C 字符串处理 9.3.1 默认字符串处理 9.3.2 传递二进制数据 9.3.3 使用 %newobject 释放内存 9.3.4 cstring.i 9.4 STL/C++ 库 9.4.1 std::string 9.4.2 std::vector 9.4.3 STL…

推荐序 本文介绍了 iOS 10 中的 Call Directory Extension 特性,并且最终 Demo 出一个来电黑名单的 App. 作者:余龙泽,哈工大软件工程大四学生,之前在美图公司实习,在iOS学习道路上不断努力中. 感谢作者授权,以下是正文. iOS 10 中引入了许多令人振奋的新特性,其中 CallKit 让我特别感兴趣.这是一个非常重要的 API,继 2014 年苹果推出 VoIP 证书后,这次 VoIP 接口的开放,以及一个全新的 App Extension,简直是 V…