stevedoyle

Git Cheatsheet

Fetching and Pulling

Task	Command
Fetch for later merging	git fetch [remote name]
Pull and merge	git pull [remote name]
Pull and rebase local changes on top (instead of merging)	git pull --rebase [remote name]
Clone only a subset of files	git init repo cd repo git remote add origin url git config core.sparsecheckout true echo "path/*" >> .git/info/sparse-checkout git pull --depth=1 origin master

stevedoyle

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

stevedoyle

p = [(1,2,3), (2,4), (1,6)]
set(itertools.chain(*p))
=> {1,2,3,4,5,6}

where:
*p expands the list elements into separate arguments
itertools.chain() chains all of the individual elements of each parameter (the tuple from p in this case) into a single iterable stream.

stevedoyle

# virtualenv setup
cd proj_folder
virtualenv venv

# or with a particular version of python
virtualenv -p /usr/bin/python2.7 venv

# Activate it
source venv/bin/activate

stevedoyle

import copy
import os
from lxml import objectify

namespace = 'http://www.garmin.com/xmlschemas/TrainingCenterDatabase/v2'

def remove_laps():
    pass

def count_laps(tree_root):

stevedoyle

from StringIO import StringIO
from lxml import objectify

class SampleParser:

    def __init__(self, xml_data):
        tree = objectify.parse(xml_data)
        self.root = tree.getroot()

    def student_names(self):

stevedoyle

Find students whose name is Bob:
//Student/name[text()="Bob"]

stevedoyle

class GoalsViewController: UITableViewController, NSFetchedResultsControllerDelegate {
...
    let managedContext = (UIApplication.sharedApplication().delegate as AppDelegate).managedObjectContext
    var fetchedResultsController: NSFetchedResultsController = NSFetchedResultsController()
...
    func getFetchedResultsController() -> NSFetchedResultsController {
        fetchedResultsController = NSFetchedResultsController(fetchRequest: goalFetchRequest(), managedObjectContext: managedContext!, sectionNameKeyPath: nil, cacheName: nil)
        return fetchedResultsController
    }
    

stevedoyle

var targetDistance: NSNumber = 4000
var completedDistance: NSNumber = 121.7
var percentComplete: Float

// NSNumber can contain different types, so need to be explicit about the type of its value
// when using it in arithmetic
percentComplete = (completedDistance.floatValue / targetDistance.floatValue) * 100
println(percentComplete)

stevedoyle

import argparse
import logging

def main():
    parser = argparse.ArgumentParser(description="Example")

    parser.add_argument('-v', '--verbose', action='store_true', help="Verbose output")

    parser.add_argument('--size', nargs='*', default=[256], type=int, choices=[256,512,768,1024], help="Data sizes (default = 256)")