chrisglass

☭ ~ $ revel new src/sweet_app
☭ ~ $ cd src/sweet_app/
☭ ~/sweet_app $ git init
☭ ~/sweet_app (master)$ cat > .godir
sweet_app
^C
☭ ~/sweet_app (master)$ git add .godir *
☭ ~/sweet_app (master)$ git ci -m"Initial"
☭ ~/sweet_app (master)$ heroku create --buildpack https://github.com/traviscline/heroku-buildpack-go-revel.git
☭ ~/sweet_app (master)$ git push heroku master

chrisglass

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!

chrisglass

def acquire(name):
    tries = 0
    while True:
        tries += 1
        if tries >= 30:
            raise Exception("Couldn't acquire lock on mutex "+name)
        try:
            n = r.incr("lock-"+name)
            if n == 1:
                return True