NirantK

FWIW: I didn't produce the content present here. I've just copy-pasted it from somewhere over the Internet, but I cannot remember exactly the original source. I was also not able to find the author's name, so I cannot give him/her the proper credit.

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Effective Engineer - Notes

• By Edmond Lau
• Highly Recommended 👍
• http://www.theeffectiveengineer.com/

What's an Effective Engineer?

NirantK

Jupyter Notebook Hacks

Better Mindset

• IMPORTANT: Frequently rewrite each cell logic into functions. These functions can be moved to separate .py files on regular intervals. Your notebook run should be mainly function calls.
  • This would prevent your notebook from becoming a giant pudding of several global variables
• If particular cells take too long to run, add %%time cell magic as a warning + runtime logger
• If you are on Py3.6+, please use f-strings! f"This is iteration: {iter_number}"is much more readable than .format() syntax
• Any code that is used in more than 3 notebooks should be moved to .py files (such as utils.py) and imported such as from xxx_imports import *
• Quite often, we frequently re-run same code cell. Instead, refactor that cell to a function and call that function repeatedly to prevent accidental edits

NirantK

NirantK

_fstring = f'Total: {one + two}'  # Go f-string!
_format = 'Total: {}'.format(one + two)
_percent = 'Total: %s' % (one + two)
_concatenation = 'Total: ' + str(one + two)
assert _fstring == _format == _percent == _concatenation

NirantK

# inline variables, similar to LaTeX
name = "Fred"
print(f"He said his name is {name}.")
# 'He said his name is Fred.'

NirantK

# auto-resolve variable scope when nested
width = 10
precision = 4
value = decimal.Decimal("12.34567")
print(f"result: {value:{width}.{precision}}")  # nested fields
# 'result:      12.35'

NirantK

correct = 'correct'
phonetic_correct = 'phonetic_correct'
typo = 'typo'
phonetic_typo = 'phonetic_typo'
phonetic_distance = 'phonetic_distance'

print(f'No Spacing:')
print(f'{correct}|{phonetic_correct}|{typo}|{phonetic_typo}|{phonetic_distance}|\n')
# No Spacing:
# correct|phonetic_correct|typo|phonetic_typo|phonetic_distance|

NirantK

items = list(range(0, 5)) # create list of 5 elements
print(items)
# [0, 1, 2, 3, 4]

print(f'number of items: {len(items)}')
# number of items: 5

NirantK

# If you feel you must use lambdas, they may be used inside of parentheses:
print(f'{(lambda x: x*3)(3)}')
# '9'

# not that this returned a <str> and not <int>

NirantK

#!/usr/bin/env bash

#
# Sets the GOPATH and GOBIN to the current directory.
# Adds GOBIN to the PATH.
#
# Usage:
# 1. Put this script somewhere on your PATH.
# 2. Enter directory of a golang project (contains src, pkg, bin)
# 3. Execute: . gopath