Why can’t computing be more like playing an instrument?
Liveness in electrical circuits. How to replace a light switch: safely or write it hot! In computing, you can make the same kind of choices without risk of death.
Live programming: modify a running protean without doing execution.
Fortran was proposed on 1953. Programming was a long task. Make a flowchart, hand write out code, full out a form. Punch cards. Etc etc etc
In 1963 Ivan Sutherland came up with an interactive graphical interface. Visual languages make use of graphics.
Visual languages are discoverable via interactions.
This seeks a closer interaction between program and programmer. Increase visibility. Reduce latency.
Early graphics were non interactive. By the 70’s, diagrams were executable. In the 80’s, the were responsive.
1. Informative. Flowchart as description
2. Informative and significant. Executable flowchart
The Data Factory
His live language. All data e elements have a place. Data flows between them.
Is a bit pd-like…
Proposed extension to liveness hierarchy… When does execution respond to programming changes?
Level 1: never
Level 2: when commanded
Level 3; upon any edit
Level 4: immediately and continuously
Level 5: predictive. The computer crashed alternative branches and the use selected the one they want.
Level 6: the computer tries to guess entire program parts
Gestural input for character input is level 5. And also how I am entering this post…
Level 6. Strategically predictive liveness.
Liveness is only useful if the program is executed straight away. Solutions: check syntax immediately. Secondary executions like just to headphones before out to main speakers.
Q: should truly live programmes learn from and incorporate errors?
A: software engineering is about creating an artefact. Live coding is a performance.
Q: could unit testing be used for predictive aliveness?
A: sound like a good PhD.
Q: music is stateful and development is on some sense stateless.
A: programmers do not think of themselves in terms of performance, but programming involves cognitive states.
Q: doors livened mean the same thing to us as it does to computer science? Or live coding is not live by some definitions.
A: mixing singing and coding does reduce distance between thought and output.