elnygren

; The Expression Problem and my sources:
; http://stackoverflow.com/questions/3596366/what-is-the-expression-problem
; http://blog.ontoillogical.com/blog/2014/10/18/solving-the-expression-problem-in-clojure/
; http://eli.thegreenplace.net/2016/the-expression-problem-and-its-solutions/
; http://www.ibm.com/developerworks/library/j-clojure-protocols/


; To begin demonstrating the problem, we first need some
; "legacy code" with datastructures and functionality:

olih

Processing JSON using jq

jq is useful to slice, filter, map and transform structured json data.

Installing jq

On Mac OS

brew install jq

mgold

Grab the brown and black knobs. You can also dial some of the numbers on the right.

Spherical coordinates are defined by ρ (rho, the distance from the origin), θ (theta, rotation parallel to the xy-plane), and φ (phi, inclination from the north pole to the south pole). This interactive drawing shows how they relate to the Cartesian xyz coordinates. The key is the horizontal slice of radius r.

• z = ρ cos φ
• r = ρ sin φ

Which makes sense: when φ=0, we're looking at the north pole, z=ρ and r=0. Then we're left with the familiar equations:

• x = r cos θ

ZedThree

import re

def build_graph(files,exclude=['hdf5','h5lt','mpi']):
    """Build a dot graph of the Fortran modules in a list of files,
    excluding modules named in the list exclude"""

    # Start the graph
    graph = "digraph G {\n"
    deps = {}
    p = re.compile("^(?:module|program) ([a-zA-Z0-9_]*)",

hrldcpr

One-line Tree in Python

Using Python's built-in defaultdict we can easily define a tree data structure:

def tree(): return defaultdict(tree)

That's it!

henrik

tmux cheatsheet

As configured in my dotfiles.

start new:

tmux

start new with session name:

igniteflow

"""
Gets the name of the active Git branch as a string.
Depends on GitPython

pip install GitPython
"""
from git import Repo

repo = Repo('/path/to/your/repo')
branch = repo.active_branch

audy

#!/usr/bin/env python

# Shannon Diversity Index
# http://en.wikipedia.org/wiki/Shannon_index

import sys

def sdi(data):
    """ Given a hash { 'species': count } , returns the SDI
    

jagregory

So you've cloned somebody's repo from github, but now you want to fork it and contribute back. Never fear!

Technically, when you fork "origin" should be your fork and "upstream" should be the project you forked; however, if you're willing to break this convention then it's easy.

* Off the top of my head *

1. Fork their repo on Github
2. In your local, add a new remote to your fork; then fetch it, and push your changes up to it

    git remote add my-fork [email protected]