Picking the right architecture = Picking the right battles + Managing trade-offs
| # aecho.py | |
| from socket import * | |
| import asyncio | |
| loop = asyncio.get_event_loop() | |
| async def echo_server(address): | |
| sock = socket(AF_INET, SOCK_STREAM) | |
| sock.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1) |
These are the Kickstarter Engineering and Data role definitions for both teams.
A primer/refresher on the category theory concepts that most commonly crop up in conversations about Scala or FP. (Because it's embarassing when I forget this stuff!)
I'll be assuming Scalaz imports in code samples, and some of the code may be pseudo-Scala.
A functor is something that supports map.
General key themes:
Hiring is really hard. You’re not just hiring a “Rails Engineer” or a “Python Programmer” you’re hiring someone who can help you change the world. Tell them why! Talk about the hard problems you’re solving. 2/3 of these talks give ideas and insight into hiring from sourcing to actual interview processes.
Rewriting systems is hard. People think they are going to replace their broken down horse and buggie with a bullet train and this often ends up in disaster. Successful rewrites require an incremental approach that takes months/years and often runs way over schedule. 2/3 of these talks go over how to handle rewrites not only from a high level technical perspective but a cultural/management perspective as well.
The official instructions for installing Nominatim are complete, but brief in places, and several steps must be changed in the Amazon Linux environment (which is roughly CentOS / Redhat). The steps below are rough record of what I did to get it working, but I didn't keep perfect track so you shouldn't rely on them as a shell script. Just follow each step, make sure it worked, and hopefully you'll need to adapt very little (version numbers, for one thing). (I also skip in and out of root, but you can be more careful if you like.)
| EXECUTE sys.utl_recomp.recomp_serial('SDE'); | |
| ASSOCIATE STATISTICS WITH PACKAGES sde.st_domain_operators, sde.st_relation_operators USING sde.st_domain_stats; | |
| ASSOCIATE STATISTICS WITH INDEXTYPES sde.st_spatial_index USING sde.st_domain_stats; | |
| ASSOCIATE STATISTICS WITH TYPES sde.st_geometry USING sde.st_domain_stats; |
| ############################################################################## | |
| # | |
| # Simple Python program to benchmark several Python Excel writing modules. | |
| # | |
| # python bench_excel_writers.py [num_rows] [num_cols] | |
| # | |
| # | |
| import sys | |
| from time import clock |
| # Byte-compiled / optimized / DLL files | |
| __pycache__/ | |
| *.py[cod] | |
| # C extensions | |
| *.so | |
| # Distribution / packaging | |
| .Python | |
| env/ |
| # extracted from http//www.naturalearthdata.com/download/110m/cultural/ne_110m_admin_0_countries.zip | |
| # under public domain terms | |
| country_bounding_boxes = { | |
| 'AF': ('Afghanistan', (60.5284298033, 29.318572496, 75.1580277851, 38.4862816432)), | |
| 'AO': ('Angola', (11.6400960629, -17.9306364885, 24.0799052263, -4.43802336998)), | |
| 'AL': ('Albania', (19.3044861183, 39.624997667, 21.0200403175, 42.6882473822)), | |
| 'AE': ('United Arab Emirates', (51.5795186705, 22.4969475367, 56.3968473651, 26.055464179)), | |
| 'AR': ('Argentina', (-73.4154357571, -55.25, -53.628348965, -21.8323104794)), | |
| 'AM': ('Armenia', (43.5827458026, 38.7412014837, 46.5057198423, 41.2481285671)), |
