Mateo Rodriguez mateor

Installing / troubleshooting pants

Requirements

Most of the commons python environment has been developed against CPython 2.6. Things mostly work with CPython 2.7 and recent efforts have been made to improve CPython 3.x and PyPy compatibility. We've explicitly ignored anything prior to CPython 2.6 and in fact generally discourage use against anything less than CPython 2.6.5 as there are known bugs that we're unwilling to fix. We've never even tried running against Jython or

Python development using Pants

brian wickman - @wickman

[TOC]

Why use Pants for Python development?

Pants makes the manipulation and distribution of hermetically sealed Python environments

The purpose of this document is to make recommendations on how to browse in a privacy and security conscious manner. This information is compiled from a number of sources, which are referenced throughout the document, as well as my own experiences with the described technologies.

I welcome contributions and comments on the information contained. Please see the How to Contribute section for information on contributing your own knowledge.

Scala's "type T in class C as seen from a prefix type S" with examples

Introduction

Recently, I found myself in need to precisely understand Scala's core typechecking rules. I was particulary interested in understanding rules responsible for typechecking signatures of members defined in classes (and all types derived from them). Scala Language Specification (SLS) contains definition of the rules but lacks any examples. The definition of the rules uses mutual recursion and nested switch-like constructs that make it hard to follow. I've written down examples together with explanation how specific set of rules (grouped thematically) is applied. These notes helped me gain confidence that I fully understand Scala's core typechecking algorithm.

As Seen From

Let's quote the Scala spec for As Seen From (ASF) rules numbered for an easier reference:

	obj-m += tcp_svr_sample.o

	all:
	make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules

	clean:
	make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clea

	import bpy

	def makeMaterial(name, diffuse, specular, alpha): #Easy to use function for making cube materials
	mat = bpy.data.materials.new(name)
	mat.diffuse_color = diffuse
	mat.diffuse_shader = 'LAMBERT'
	mat.diffuse_intensity = 1.0
	mat.specular_color = specular
	mat.specular_shader = 'COOKTORR'
	mat.specular_intensity = 0.5


	android_binary(
	name = 'app',
	manifest = 'AndroidManifest.xml',
	keystore = ':debug_keystore',
	use_split_dex = True,
	primary_dex_patterns = [
	'^com/tryroll/roll/AppShell^',
	'^com/tryroll/roll/debug/AppShell^',
	'^com/tryroll/roll/BuildConfig^',

	#!/usr/bin/env python

	from __future__ import print_function

	import json
	import logging

	from urllib2 import Request, urlopen, URLError, HTTPError
	from base64 import b64decode