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Android Development

High-level Overview

Components of an Android App

• Intents
  • Activity
  • Service
  • Content Provider
  • Broadcast Receiver
  • Manifest - an XML file that declares the components (above) and some properties o fthe app

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Multi-Threaded Programming in C

pthreads

1. include header #include <pthread.h>

2. Compile with one of the following options to link the library and allow reporting of compilation errors: gcc -o main main.c -lpthread gcc -o main main.c -pthread

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C++

• very large language, difficult to learn

• has 5 parts:

  • C language
  • C preprocessor
  • Classes and Objects
  • Templates
  • Standard Template Library

• passing objects onto the stack is bad practice; instead use pointers or references

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Tailwind CSS

Installation

• during setup and installation, if you encounter package.json missing error, use npm init to create the missing file

1. Install Tailwind CSS

npm init -y
npm i tailwindcss

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Linux System Reference Manual

Sections
1. Executable programs or shell commands
2. System calls (functions provided by the kernel)
3. Library calls (functions within program libraries)
4. Special files (usually found in /dev)
5. File formats and conventions eg /etc/passwd
6. Games

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C Socket Programming

Sockets are a way to speak to other programs using standard Unix file descriptors.

Basic Overview

socket() -> connect() -> [send()|recv()]

int socket(int _domain, int _type, int _protocol) _THROW;

1. Creat a socket.

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Ubuntu

Setup

• update sudo apt install updates
• Add user to sudoers sudo usermod -aG sudo [username]
• set up ruby and add user to rvm group https://github.com/rvm/ubuntu_rvm

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# XAMPP

## Setup
### Stop existing Apache and MySQL services:
`/etc/init.d/apache2 stop`
`/etc/init.d/mysql stop`

### Start XAMPP
`sudo /opt/lampp/lampp start`

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PHP

Basics

Installation

1. Download and extract source code into C:\php

2. copy C:\php\php.ini-development into a new file called C:\php\php.ini

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GDB (GNU Debugger)

Quick Reference

1. gdb [file name]
2. b [breakpoint line #]
3. start
4. c (go to first breakpoint)
5. p [var name] (print a variable value)