(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.
(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.
# The command finds the most recent tag that is reachable from a commit. | |
# If the tag points to the commit, then only the tag is shown. | |
# Otherwise, it suffixes the tag name with the number of additional commits on top of the tagged object | |
# and the abbreviated object name of the most recent commit. | |
git describe | |
# With --abbrev set to 0, the command can be used to find the closest tagname without any suffix: | |
git describe --abbrev=0 | |
# other examples |
eXtreme Go Horse (XGH) Process | |
Source: http://gohorseprocess.wordpress.com | |
1. I think therefore it's not XGH. | |
In XGH you don't think, you do the first thing that comes to your mind. There's not a second option as the first one is faster. | |
2. There are 3 ways of solving a problem: the right way, the wrong way and the XGH way which is exactly like the wrong one but faster. | |
XGH is faster than any development process you know (see Axiom 14). |
-- show running queries (pre 9.2) | |
SELECT procpid, age(clock_timestamp(), query_start), usename, current_query | |
FROM pg_stat_activity | |
WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%' | |
ORDER BY query_start desc; | |
-- show running queries (9.2) | |
SELECT pid, age(clock_timestamp(), query_start), usename, query | |
FROM pg_stat_activity | |
WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%' |
javascript: | |
document.querySelectorAll('.load-diff-button').forEach(node => node.click()) |
Get Homebrew installed on your mac if you don't already have it
Install highlight. "brew install highlight". (This brings down Lua and Boost as well)
$> brew cask install java | |
$> brew install kafka | |
$> vim ~/bin/kafka | |
# ~/bin/kafka | |
#!/bin/bash | |
zkServer start | |
kafka-server-start.sh /usr/local/etc/kafka/server.properties |
After automatically updating Postgres to 10.0 via Homebrew, the pg_ctl start command didn't work. | |
The error was "The data directory was initialized by PostgreSQL version 9.6, which is not compatible with this version 10.0." | |
Database files have to be updated before starting the server, here are the steps that had to be followed: | |
# need to have both 9.6.x and latest 10.0 installed, and keep 10.0 as default | |
brew unlink postgresql | |
brew install postgresql@9.6 | |
brew unlink postgresql@9.6 | |
brew link postgresql |
brew install git bash-completion
Configure things:
git config --global user.name "Your Name"
git config --global user.email "you@example.com"
In python, you have floats and decimals that can be rounded. If you care about the accuracy of rounding, use decimal type. If you use floats, you will have issues with accuracy.
All the examples use demical types, except for the original value, which is automatically casted as a float.
To set the context of what we are working with, let's start with an original value.