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state-machine-component

A tiny (265 byte) utility to create state machine components using two pure functions.

🔥 JSFiddle Demo

Usage

The API is a single function that accepts 2 pure functions as arguments:

chanmix51

Using arrays in bash

creating an array

$> my_array=(one two three)

accessing/setting elements

$> echo ${my_array}

one

coderofsalvation

# check if variable is array, returns 0 on success, 1 otherwise
# @param mixed 

is_array()
{   #detect if arg is an array, returns 0 on sucess, 1 otherwise
    [ -z "$1" ] && return 1
    if [ -n "$BASH" ]; then
        declare -p ${1} 2> /dev/null | grep 'declare \-a' >/dev/null && return 0
    fi
    return 1

sindresorhus

#!/usr/bin/env bash
# MIT © Sindre Sorhus - sindresorhus.com

# git hook to run a command after `git pull` if a specified file was changed
# Run `chmod +x post-merge` to make it executable then put it into `.git/hooks/`.

changed_files="$(git diff-tree -r --name-only --no-commit-id ORIG_HEAD HEAD)"

check_run() {
	echo "$changed_files" | grep --quiet "$1" && eval "$2"