vegarsti

"""
A program for investigating this property of coins:
If Alice tosses a coin until she sees a head followed by a tail, and Bob tosses a coin until he sees two heads in a row,
then on average, Alice will require four tosses while Bob will require six tosses (try this at home!),
even though head-tail and head-head have an equal chance of appearing after two coin tosses.
From https://www.quantamagazine.org/20160313-mathematicians-discover-prime-conspiracy/
"""

from numpy.random import randint
from sys import argv

vegarsti

• Write commit messages
  • If applied, this commit will... "Change that thing"
  • i.e., git commit -m "Change that thing"
  • Use imperative. Capitalize first letter, and no periods at the end.
• Branches and merge
  • Create new branch, do stuff, and then merge

  git branch new-branch
  git checkout new-branch
  
  

vegarsti

• scp usage
  • scp *.png server:~ Copies all png files from current folder to home directory on server (which is a key specified in config)  - scp server:~*.png ~/pics the other way around
• printing at ifi (w/ pullprint)
  • pullprint [file] or lpr [file] -P pullprint_ricoh
  • Pullprint
• Bash shell shortcuts (from here)
  • Ctrl + a: Start of line
  • Ctrl + e: End of line
  • Ctrl + w: Erase word

vegarsti

I prefer a help rule in the Makefile, like so:

   help:
        @grep -P '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-20s\033[0m %s\n", $$1, $$2}'
Assuming that the trimmed Makefile read:

   build: ## Build the binary

 clean: ## Clean the binary and intermediate files

vegarsti

if (argc != 2) {
  fprintf(stderr, "Usage: %s <filename>\n", argv[0]);
  return 0;
}

vegarsti

tmux cheatsheet

• C-b %   split horizontally
• C-b "   split vertically
• C-b x   Quit current pane (window?)
• C-b o   Jump to other pane

vegarsti

vim cheatsheet

• C-w C-w [file]   split horizontally; open [file]
• C-z: put Vim in the background
• fg: put in foreground again
• [n]dd: delete [n] lines (n defaults to 1) (and store in clipboard)
• O: insert line before current line and enter insert mode
• o: Same, but after current
• :w save
• %s/old/new/g: replace all occurrences of old with new

vegarsti

• plot(x, y) + abline(a, b, col="red", lwd=2)
• plot(x, y, type="b", col="red", pch=19) "dotdash" med filled
• plot(x, y, type="b", col="red") "dotdash" uten filled
• rm(list=ls(all=TRUE)) remove stuff
• `sapply(.., simplify='array') == unlist(lapply(..))

vegarsti

• save: C-x C-s (+ enter)
• open file: C-x C-f
• switch to buffer: C-x b
• meta key M is escape and left alt (option)
• C-k: kills from cursor until end of line
• C-/ (7) -- undo!
• C-a start of line
• C-e start of line
• M-f forward one word
• M-b back one word

vegarsti

• plt.savefig(filename, bbox_inches='tight') --> get the entire plot when saved
• Reset to factory default matplotlib style

import matplotlib as mpl
mpl.rcParams.update(mpl.rcParamsDefault)

• plt.axes('tight') removes all space around the area of the curve
• plt.axes('equal') ensures x-y even
• plt.axhline(y=production_accuracy, linewidth=2, color='k', label='production') horizontal line