eashish93

vs Questions

---

1. http://stackoverflow.com/questions/804115 (rebase vs merge).
2. https://www.atlassian.com/git/tutorials/merging-vs-rebasing (rebase vs merge)
3. https://www.atlassian.com/git/tutorials/undoing-changes/ (reset vs checkout vs revert)
4. http://stackoverflow.com/questions/2221658 (HEAD^ vs HEAD~) (See git rev-parse)
5. http://stackoverflow.com/questions/292357 (pull vs fetch)
6. http://stackoverflow.com/questions/39651 (stash vs branch)
7. http://stackoverflow.com/questions/8358035 (reset vs checkout vs revert)

nepsilon

Proper way to do backup (and restore!) with PostgreSQL 🐘

Postgres provides us several options to do backup just like we want. I’ve tried several strategies in the past, and here is the one I stick to now, for both its simplicity and efficiency.

Backup your database with:

# This is using Postgres custom format
pg_dump -Fc dbname > filename

nepsilon

How to grep search committed code in git?

Search working tree for text matching regular expression regexp:

git grep regexp 

Search working tree for lines of text matching regexp A or B:

git grep -e A --or -e B 

thomasboyt

Why I think Webpack is the right approach to build pipelines

(I've reposted this on my blog, which you may find more pleasant to read: http://devlog.disco.zone/2016/06/01/webpack/)

I was asked on Twitter why I think Webpack is the right approach to build tooling in JavaScript applications. My explanation is, uh, a bit longer than fit in a single tweet.

When I say "right approach," I'm specifically talking about the way Webpack's pipeline functions. There are certainly some deficiencies in various aspects of Webpack: it has a rather unintuitive API, and often requires quite a bit of boilerplate to set up. However, even with these issues, I think the core principles of how Webpack functions are sound.

I should also mention here this argument basically applies to SystemJS as well. I'm skeptical of various aspects of SystemJS, but I've only taken a very surface-level look at it, so I'm gonna withhold judgement until I've had a chance

nepsilon

A better setup for Git

Git default configuration is good but it can be personalized to improve your workflow efficiency. Here are some good lines to put in your ~/.gitconfig:

# The basics, who you commit as:
[user]
  name = John Doe
  email = john@doe.org

nepsilon

3 Python modules you can use directly on the CLI

1. Start a local webserver to serve the file of your current directory on the LAN:

# Python version 2.x:
python -m SimpleHTTPServer 
# Python version 3.x:
python3 -m http.server

nepsilon

Display a cool banner when you log in with SSH

SSH gives us a way to displaya custom welcome message when a user log in. You can make this message dynamic thanks to update-motd, but here we’ll talk about the SSH built-in feature.

Here is how to do in 3 steps:

Put your message in /etc/issue.net:

$ vim /etc/issue.net

macournoyer

$ python xor.py
Training:
  Epoch   0   MSE: 1.765
  Epoch 100   MSE: 0.015
  Epoch 200   MSE: 0.005
  * Target MSE reached *
Evaluating:
  1 XOR 0 = 1 ( 0.904)   Error: 0.096
  0 XOR 1 = 1 ( 0.908)   Error: 0.092
  1 XOR 1 = 0 (-0.008)   Error: 0.008

pramsey

Parallel PostGIS

PostgreSQL Parallel Sequence Scan was committed into the git master a couple weeks ago, and initial tests have been promising.

• Robert Haas: Parallel Sequential Scan is Committed!
• Amit Kapila: Parallel Sequential Scans in play

So far, the parallel functionality is only very limited, just sequence scans, but that's still enough to test out against basic PostGIS functions.

Setup

JuniorPolegato

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import httplib
import re
import sys
import base64
import subprocess
import urllib
import lxml.etree