Dominic Nguyen datduyng

MySQL

Getting started:

A file is a unit of stored memory, usually on disk
A file can also be... directories, buffers (standard input/output are files), a socket could be a file, a program is a file
You can write to and read from a file
Files may be plaintext or binary (or plaintext but not intended for human consumption: EDI, XML, JSON, base-64 encoding)
The basic steps to follow are:
1. Open the file
2. Process the file

Strings represent data that may need to be processed
Common to deal with CSV (Comma separated value) or similar formatted data
Standard library functions can help, but processing involves designing algorithms

There is a ctype.h library that provides several "check" functions for single characters: isalpha(c), isdigit(c), islower(c), isupper(c), isspace(c), conversion: toupper(c), tolower(c), etc.

An introduction to loop control structures.

We need a way to repeatedly execute blocks of code
There are three basic elements to a loop control structure:
- An initialization (where the loop starts)
- A continuation condition (how long should the loop continue or when should it stop)

Strings are ordered sequences of characters (may be ASCII or Unicode)
Different languages represent strings differently
Most languages provide a standard library of functions/methods to process strings

It is rare to only deal with one piece of data
Usually, more than one number, string, object, etc.
Collections of data can be stored in arrays
In general:
- arrays have a single identifier (name)
  - You can access individual elements in an array using an index

A function is a reusable unit of code that may take input(s) and may produce an output
Already familiar with functions: main(), printf(), sqrt(), etc.
Functions facilitate code reuse, you don't have to copy-pasta the same code over and over
Procedural abstraction: functions allow us to ignore the small details of how a certain block of code or algorithm works
Functions encapsulate functionality into reusable abstract code blocks
Standard libraries and functions have a lot of design, optimization, testing, debugging, etc. behind them, USE them

Normally, programs have sequential control flow
However, more complex problems require decisions
Conditionals are how we can make some code execute under some condition(s) and/or other, different code to execute under other conditions
if-statements, if-else statements, if-else-if statements
Conditionals rely on some logical condition

	# Start a container that mimic the lambda environment
	docker run -it --rm --entrypoint bash -e ODBCINI=/var/task -e ODBCSYSINI=/var/task -v "$PWD":/var/task lambci/lambda:build-python2.7

	# Then, download ODBC source code, compile and take the output
	curl ftp://ftp.unixodbc.org/pub/unixODBC/unixODBC-2.3.5.tar.gz -O
	tar xvzf unixODBC-2.3.5.tar.gz
	cd unixODBC-2.3.5
	./configure --sysconfdir=/var/task --disable-gui --disable-drivers --enable-iconv --with-iconv-char-enc=UTF8 --with-iconv-ucode-enc=UTF16LE --prefix=/home
	make install
	cd ..

	package cse.unl;

	import java.time.LocalDate;

	public class Demo {

	public static void main(String args[]) {
	LocalDate dateOfBirth = LocalDate.of(1990, 7, 9);

	Student s1 = new Student(35140602, "Chris", "Bourke", 4.0, dateOfBirth);