Today I Learned

TIL, 2017-03-13

  • Casting nil is …
  • Better explanation of Class and Instance variables
  • Prelim return
  • Don’t forget about String scan
  • It’s so hard to teach if you have to explain why things are like this
  • It’s hard to teach period!
  • pip install numpy, import numpy
  • breakpoint: ipython
  • We’ll get this machine learning thingie eventually
  • ActiveRecord reflection, hmm

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