184_notes:troubleshooting

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184_notes:troubleshooting [2022/04/20 16:13] – woodsna1184_notes:troubleshooting [2022/05/06 22:06] (current) – [Math] woodsna1
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 ====== Coding: When it all Goes Wrong ====== ====== Coding: When it all Goes Wrong ======
-A programming project isn't complete without an error that seems impossible to fix. Glowscript's error messages can be vague. If you find yourself completely lost in a coding project, the best bet is usually to take a step back. Go back to your pseudocode and comments, and compare them to the code you have written. Is each line doing exactly what it should be? Be particularly careful with loops and if statements, consider the location of each line within a loop.+A programming project isn't complete without an error that seems impossible to fix. Glowscript's error messages can be vague. If you find yourself completely lost in a coding project, the best bet is usually to take a step back. Go back to your pseudocode and comments, and compare them to the code you have written. Is each line doing exactly what it should be? Be particularly careful with loops and if statements, and consider the location of each line within a loop.
  
 ===== Debugging ===== ===== Debugging =====
 Often, something you've written isn't doing what you expect it to. The best way to track these issues down in Glowscript is using print() statements. Pick a value, and print it out. Then check if the printed value matches what you expect. Try a few if you're having trouble tracking down an error.  Often, something you've written isn't doing what you expect it to. The best way to track these issues down in Glowscript is using print() statements. Pick a value, and print it out. Then check if the printed value matches what you expect. Try a few if you're having trouble tracking down an error. 
 +
 +Another good strategy is to comment out code that you suspect is causing an error, then add it back in line-by-line until you find the source of the error.
  
 Sometimes, the issue is with the way your code is written (syntax). These cases can be particularly hard to track down. Sometimes, the issue is with the way your code is written (syntax). These cases can be particularly hard to track down.
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 </code> </code>
 === Divide by Zero === === Divide by Zero ===
-If your code contains division by 0, you may get a confusing error message. Double-check that variables are properly initialized, correctly positioned within loops, etc. +If your code contains division by 0, you may get a confusing error message. Double-check that variables are properly initialized, correctly positioned within loops, and that any counter variables are being incremented in the correct locations.
 ==== Loops ==== ==== Loops ====
 If the conditional initially evaluates to False, the loop will never execute. If the conditional initially evaluates to False, the loop will never execute.
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  • Last modified: 2022/04/20 16:13
  • by woodsna1