Lin Chia Hua Appletone

預先安裝(若需要)

安裝 Homebrew

/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

安裝 FFmpeg

brew install ffmpeg

cheatsheet

https://web.archive.org/web/20110219163448/http://howtohft.wordpress.com/2011/02/15/how-to-build-a-fast-limit-order-book/

The response to my first few posts has been much larger than I’d imagined and I’d like to thank everyone for the encouragement.

If you’re interested in building a trading system I recommend first reading my previous post on general ideas to keep in mind.

My first really technical post will be on how to build a limit order book, probably the single most important component of a trading system. Because the data structure chosen to represent the limit order book will be the primary source of market information for trading models, it is important to make it both absolutely correct and extremely fast.

To give some idea of the data volumes, the Nasdaq TotalView ITCH feed, which is every event in every instrument traded on the Nasdaq, can have data rates of 20+ gigabytes/day with spikes of 3 megabytes/second or more. The individual messages average about 20 bytes each so this means handling

Deploy kubernetes-dashboard on Rancher 2.x cluster exposed using NodePort

This has been updated to install Dashboard v2.0.0, see below for pre v2.0.0 instructions

Requirements

kubectl (https://kubernetes.io/docs/tasks/tools/install-kubectl/)

Step 1: Generate kubeconfig from the UI

Generate the kubeconfig file for your cluster using the Kubeconfig File button in the Cluster view of your cluster.

iTerm2 - color 'ls' and other outputs for MacOS

That's right. For OS X and BSD's ls, the flag is -G. Many people customize the behavior of ls by replacing it with an alias that adds extra options. I have the following in my .bashrc, for example:

alias ls='LSCOLORS=gxfxcxdxbxexexabagacad /bin/ls -bFHGLOPW'

Besides enabling colors in general, this sets the LSCOLORS variable in order to change which ones ls uses.

	if 'entity_id' not in data:
	logger.warning("===== entity_id is required if you want to set something.")
	else:
	data = data.copy()
	inputEntity = data.pop('entity_id')
	inputStateObject = hass.states.get(inputEntity)
	if inputStateObject:
	inputState = inputStateObject.state
	inputAttributesObject = inputStateObject.attributes.copy()
	else:

	//
	// Obfuscator.swift
	//
	// Created by Dejan Atanasov on 2017-05-31.
	//

	import Foundation

	class Obfuscator: AnyObject {

	static void LogNSNotifications(CFNotificationCenterRef center,
	void *observer,
	CFStringRef name,
	const void *object,
	CFDictionaryRef userInfo);

	void LogNSNotifications(CFNotificationCenterRef center,
	void *observer,
	CFStringRef name,
	const void *object,

	sudo ln -s /Applications/Xcode-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport/13.2/ /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport

	sudo ln -s /Applications/Xcode-beta.app/Contents/Developer/Platforms/WatchOS.platform/DeviceSupport/6.1/ /Applications/Xcode.app/Contents/Developer/Platforms/WatchOS.platform/DeviceSupport

	sudo ln -s /Applications/Xcode-beta.app/Contents/Developer/Platforms/AppleTVOS.platform/DeviceSupport/13.2/ /Applications/Xcode.app/Contents/Developer/Platforms/AppleTVOS.platform/DeviceSupport