Ilya: Created page with "{{PHYS212-2019}} ==Finishing up dynamical systems analysis== See previous lecture. ==Verification of models== Look for small parameters! -- More in class. Your code must be..."

2019-02-27T14:48:45Z

Created page with "{{PHYS212-2019}} ==Finishing up dynamical systems analysis== See previous lecture. ==Verification of models== Look for small parameters! -- More in class. Your code must be..."

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{{PHYS212-2019}}

==Finishing up dynamical systems analysis==
See previous lecture.

==Verification of models==
Look for small parameters! -- More in class.

Your code must be verified by running it for roughly as many independent special cases (where you know what the output should be) as there are parameters. The test cases should not be arbitrary, but the should meaningfully check the special values of the parameters.

==Good coding practices==
# Passing a variable number of arguments to a function, and how to further pass them alone in the context of ODE solvers, for example. See [[media:GrowthFunctions_v2.txt | GrowthFunctions]], [[media:Integrators_v2.txt | Integrators]], and [[media:Module2_v2.txt | Module 2]] for details, or Sec 5.8, and specifically 5.8.3 in the textbook.
# You show avoid editing arguments to a function inside the function. Read Sec D.3 of the textbook for details.
# If you choose to edit arguments to a function inside the function, then don't return these changed variables at the same time: either edit the original object (argument), or make a copy (return), but not both at the same time.
# Always check that your ''while'' loops are not infinite.
# Use constants by their name (even if they only appear once), and not by their numerical values. Define constants in the preamble.
# Write floating point numbers explicitly as 1.0 and not 1, for example.
# Vectorize your math. See Sec 3.2.1 in the textbook.
# We talked about Scopes and name spaces, Sec E1 through E5.

Physics 212, 2019: Lecture 13 - Revision history

Ilya: Created page with "{{PHYS212-2019}} ==Finishing up dynamical systems analysis== See previous lecture. ==Verification of models== Look for small parameters! -- More in class. Your code must be..."