gigamonkey

Write a program that does what it’s supposed to do
Write idiomatic code
Debug a program that you wrote
Debug a program someone else wrote
Debug the interaction between a system you wrote and one you didn’t
File a good bug report
Modify a program you didn’t write
Test a program you wrote
Test a program you didn’t write
Learn a new programming language

johnynek

Suppose you have a key like (page, geo, day) and you want to make rollups/datacube so you can query for all pages, or all geos or all days.

Here is how you do it:

def opts[T](t: T): Seq[Option[T]] = Seq(Some(t), None)

val p: TypedPipe[(String, String, Int)] = ...

p.sumByLocalKeys

omz

# turtle.py
# Basic Turtle graphics module for Pythonista
# 
# When run as a script, the classic Koch snowflake is drawn as a demo.
# The module can also be used interactively or from other scripts:
# >>> from turtle import *
# >>> right(30)
# >>> forward(100)
# ...