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Credit: Mark Kraus
Website: https://get-powershellblog.blogspot.com

Collection Type Guidence

When to use what

• Use Arrays if you know the element types and have a fixed length and/or known-up-front collection size that will not change.
• Use ArrayList if you have an unkown collection size with either unknown or mixed type elements.
• Use a Generic List when know the type of the elements but not the size of the collection.
• Use a HashTable if you are going to do key based lookups on a collection and don't know the object type of the elements.
• Use a Dictionary<TKey, TValue> you are going to do key based lookups on a collection and you know the type of the elements.
• Use a HashSet when you know the type of elements and just want unique values and quick lookups and assignmnets.

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# see https://www.topbug.net/blog/2013/04/14/install-and-use-gnu-command-line-tools-in-mac-os-x/

# core
brew install coreutils

# key commands
brew install binutils
brew install diffutils
brew install ed --default-names
brew install findutils --with-default-names

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WSL Ubuntu Terminal

WSL

Before installing any Linux distros for WSL, you must ensure that the "Windows Subsystem for Linux" optional feature is enabled:

1. Open PowerShell as Administrator and run:

   Enable-WindowsOptionalFeature -Online -FeatureName Microsoft-Windows-Subsystem-Linux

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#when we create new function or install new bin , the default zsh cant get the new completion for us,so we 
#can add a new function for this problem,you can add the blow content in your .zshrc file
function reload() {
         if [[ "$#*" -eq 0 ]]; then
                 test -r /etc/zsh/zsh-oli && . /etc/zsh/zsh-oli
                 test -r ~/.zshrc && . ~/.zshrc
                 return 0
         else
                 local fn
                 for fn in $*; do

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/*--- waitForKeyElements():  A utility function, for Greasemonkey scripts,
    that detects and handles AJAXed content.

    Usage example:

        waitForKeyElements (
            "div.comments"
            , commentCallbackFunction
        );

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// ==UserScript==
// @name         TwitterLiveFeed
// @author       disk0
// @description  Force Twitter feed to display latest tweets
// @version      0.1.1
// @run-at       document-idle
// @namespace    disk0/twitter
// @icon         data:image/png;base64,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# -*- coding: utf-8 -*-
from __future__ import print_function, unicode_literals

import os
import socket
from datetime import datetime
from urllib import parse
from klein import Klein
from twisted.web.static import File
from twisted.python.filepath import FilePath

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#!/usr/bin/env python
#   
#   Looks up a Mac's friendly model name.
#
#   Based on http://apple.stackexchange.com/a/98089/21050
#

from subprocess import check_output
from urllib import urlopen
import xml.etree.ElementTree as ET

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Stylus

A dynamic, expressive, powerful language compiling to CSS.

SLIDE:

whoami

tj holowaychuk

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[Desktop Entry]
Type=Application
Name=mpv Media Player (Single-instance mode)
GenericName=Multimedia player
Comment=Play movies and songs without starting new instance of multimedia player
Icon=mpv
TryExec=mpvctl
Exec=mpvctl add -- %U
Terminal=false
Categories=AudioVideo;Audio;Video;Player;TV;