greghelton

The Lost Decades

A friend claims that software design evolved as an engineering disipline due to the move from waterfall SDLC (systems development lifecycle) to the agile project management process. He claims that the move from waterfall SDLC to agile methodology is what propelled application design from monolithic style applications to modular code that works with unit testing frameworks.

The first reference to SDLC dates to a 1968 software conference (https://en.wikipedia.org/wiki/NATO_Software_Engineering_Conferences) and ironically, waterfall SDLC was not proposed as a methodology that would succeed but rather it was presented as the antithesis of a workable methodology. His thesis is that methodology impacted the design of application code, pushing it from monolithic to modular. I too am interested in how the style of application code evolved from monolithic programs to modular code. Was it a top down movement driven by methodology or did programmers develop new goals for the code they wrote, going

greghelton

;; Some helpful commands 
sudo mkdir /etc/paths.d
brew install libpq
brew install graphviz

;; if necessary
export PATH=/opt/homebrew/Cellar/libpq/16.3/bin:$PATH

createdb -h localhost
psql -h localhost

greghelton

What is Anaconda?
(from wikipedia) Anaconda is a cross-platform distribution of the Python and R programming languages
for scientific computing that aims to simplify package management and deployment.

Conda is Anaconda's package management system.

To install Anaconda, go to https://www.anaconda.com/products/individual/
then choose the graphical installer and follow the instructions

Conda Command to Update Conda

greghelton

import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.shape.Circle;
import javafx.stage.Stage;

public class HelloFX extends Application {

    @Override
    public void start(final Stage stage) throws Exception {

greghelton

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <stdbool.h>
const int SIZEOFFLAKESARRAY = 2000;
static int flakes[SIZEOFFLAKESARRAY][6];

void makeSnowflakes() {
    time_t t;

greghelton

<project name="h2db" basedir="." default="echo">

<property name="sqldriver.jar"  value="lib/h2-1.4.200.jar"/>
<property name="url"            value="jdbc:h2:~/h2db"/>
<property name="driver"         value="org.h2.Driver"/>
<property name="userid"         value="root"/>
<property name="password"       value="root"/>

<target name="echo">
	<echo>The targets that can be run are: </echo>

greghelton

package com.example;
import org.slf4j.*;
import java.sql.*;
import java.util.stream.Collectors;
import org.apache.commons.collections4.*;
import org.apache.commons.collections4.multimap.*;
import org.springframework.dao.DataAccessException;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.ResultSetExtractor;
import org.springframework.beans.factory.annotation.Autowired;

greghelton

package com.example;
import org.slf4j.*;
import java.sql.*;
import java.util.stream.Collectors;
import org.apache.commons.collections4.*;
import org.apache.commons.collections4.multimap.*;
import org.springframework.dao.DataAccessException;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.ResultSetExtractor;
import org.springframework.beans.factory.annotation.Autowired;

greghelton

**free
     dcl-s x     packed(3:0) inz(0);
     dcl-s y     char(10) inz('Texas');
     dcl-s key   char(10); 
     dcl-s val   char(20);   
     dcl-s mysql CHAR(250)  
          inz(‘SELECT key1, prop1 FROM states_afflictions where key1 = ? UNION ALL +
               SELECT key2, prop2 FROM states_afflictions where key2 = ? UNION ALL +
               SELECT key3, prop3 FROM states_afflictions where key3 = ? for read only’);

greghelton

javac -d bin src/boss/ScoreCollection.java

javac -cp lib\junit-4.13.jar -d bin test/boss/ScoreCollectionTest.java

javac -cp lib\junit-4.13.jar;bin -d bin test/boss/TestRunner.java

java -cp bin;lib/junit-4.13.jar;lib/hamcrest-core-1.3.jar boss.TestRunner

Result:
test(boss.ScoreCollectionTest): Not yet implemented