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Does
Andy MarksTechnical Principal
ThoughtWorks
Smelly
Code Sound
Also
Bad?
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Background
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Agenda
● Music Theory Redux● Aeolian ● Design Choices (& examples)
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A Music Theory Primer
Notes Tempo KeysOctave
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github.com/andeemarks/aeolian
“the aeolian tonic chord is the submediant minor triad”
Java
One note per line of code
Make good quality code pleasant to listen to
Make poor quality code unpleasant to listen to
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Tool chain
metrics
.abc.midi
abc2midi
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Aeolian/Hello World
public class HelloWorld { public static void main(String args[]) { System.out.println("Hello World!"); }}
X:1T:HelloWorld.metricsC:AEOLIANM:4/4L:1/8Q:1/4=140K:C%%MIDI gchord c| "C"E c b E, E, E, |
X:1T:HelloWorld.metricsC:AEOLIANM:4/4L:1/8Q:1/4=140K:C%%MIDI gchord c| "C"E c b E, E, E, |
⇨
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ABC Notation
X:1T:HelloWorld.metricsC:AEOLIANM:4/4L:1/8Q:1/4=140K:C%%MIDI gchord c| "C"E c b E, E, E, |
Notes
Tempo
Keys
⇨
Octave
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Design Choices
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Design Choices #1/Notes
Notes
<module name="LineLength">
(cond (< line-length 10)
(note-from-octave octave-1 line-length) (<= 10 line-length 39)
(note-from-octave octave-2 line-length) (<= 40 line-length 79)
(note-from-octave octave-3 line-length) ...
⇨
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Design Choices #2/Tempo
Tempo(+ (* 20 complexity) default-tempo)
<module name="CyclomaticComplexity">
⇨
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Design Choices #3/Key
Keys
⇨
<module name="SimianCheck">
(if (< duplication-percentage 10)(set-major-key)(set-minor-key)))
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Design Choices #4/Instruments
Instruments
⇨
(if (not (= current-author (get-author)))(instrument-for current-author)
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Design Choices #5/Lyrics
Lyrics
(if (not (= current-source-file (get-source-file)))(lyrics-for current-source-file)
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Design Choices #6/Sequencing
Sequencing
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Design Choices/Unresolved
Volume
⇨
Stereo Length
Note length Comments
/****/
Editor integration
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Conclusion
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Visual indicators
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if (is_smelly?(code)) {
set_build_light(“red”);
} else {
set_build_light(“green”);
}
if (is_smelly?(code)) {
play “What Does The Fox Say (Ylvis)”;
} else {
play “The Blue Danube (Strauss)”;
}
Audio indicators