Map [1]
Operation | Time Complexity |
---|---|
Access | O(log n) |
Search | O(log n) |
Insertion | O(n) for < 32 elements, O(log n) for >= 32 elements [2] |
Deletion | O(n) for < 32 elements, O(log n) for >= 32 elements |
-- 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%' |
This function returns the nearest aspect ratio of a width and height within a limited range of possible aspect ratios.
In other words, while 649x360 technically has an aspect ratio of 649:360, it’s often useful to know that the nearest normal aspect ratio is actually 9:5 (648x360).
nearestNormalAspectRatio(width, height, [side], [maxWidth], [maxHeight])
Generate a new Elixir project using mix
and add cowboy
and plug
as dependencies in mix.exs
:
defp deps do
[
{:cowboy, "~> 1.0.0"},
{:plug, "~> 0.8.1"}
]
end
Thanks to the original blog post: https://equimper.com/blog/how-to-setup-tailwindcss-in-phoenix-1.4
cd assets
npm i --save-dev tailwindcss postcss-loader postcss-import
Thanks to the original blog post: https://equimper.com/blog/how-to-setup-tailwindcss-in-phoenix-1.4
cd assets
npm i --save-dev tailwindcss postcss-loader postcss-import
#!/bin/bash | |
# CSV to JSON converter using BASH | |
# original script from http://blog.secaserver.com/2013/12/convert-csv-json-bash/ | |
# thanks SecaGuy! | |
# Usage ./csv2json.sh input.csv > output.json | |
input=$1 | |
[ -z $1 ] && echo "No CSV input file specified" && exit 1 | |
[ ! -e $input ] && echo "Unable to locate $1" && exit 1 |
This guide was written because I don't particularly enjoy deploying Phoenix (or Elixir for that matter) applications. It's not easy. Primarily, I don't have a lot of money to spend on a nice, fancy VPS so compiling my Phoenix apps on my VPS often isn't an option. For that, we have Distillery releases. However, that requires me to either have a separate server for staging to use as a build server, or to keep a particular version of Erlang installed on my VPS, neither of which sound like great options to me and they all have the possibilities of version mismatches with ERTS. In addition to all this, theres a whole lot of configuration which needs to be done to setup a Phoenix app for deployment, and it's hard to remember.
For that reason, I wanted to use Docker so that all of my deployments would be automated and reproducable. In addition, Docker would allow me to have reproducable builds for my releases. I could build my releases on any machine that I wanted in a contai
#Steps to install latest Laravel, LEMP on AWS Ubuntu 14.4 version. This tutorial is the improvised verision of this tutorial on Digitalocean based on my experience.
Run the following commands in sequence.
sudo apt-get install -y language-pack-en-base
sudo LC_ALL=en_US.UTF-8 add-apt-repository ppa:ondrej/php
sudo apt-get update
sudo apt-get install zip unzip