Will Han xingheng

To remove a submodule you need to:

Delete the relevant section from the .gitmodules file.
Stage the .gitmodules changes git add .gitmodules
Delete the relevant section from .git/config.
Run git rm --cached path_to_submodule (no trailing slash).
Run rm -rf .git/modules/path_to_submodule (no trailing slash).
Commit git commit -m "Removed submodule "
Delete the now untracked submodule files rm -rf path_to_submodule

Yosemite upgrade notes

From a (mostly) Ruby on Rails developer.

After doing the below everything seems to work (some of it worked before doing anything), including Ruby, Gems, RVM, Homebrew, VirtualBox/Vagrant VMs, Pow, tmux, git, vim.

Did a full-disk backup that I can restore from
Moved out /usr/local to avoid super slow install, per option 1 in https://jimlindley.com/blog/yosemite-upgrade-homebrew-tips/: sudo mv /usr/local ~/local
Upgraded to Yosemite
Restored /usr/local, per option 1 in https://jimlindley.com/blog/yosemite-upgrade-homebrew-tips/: sudo mv ~/local /usr

Suppose we want to add support for a new iOS 8 API in our framework that replaces an older iOS 7 API. There are a few problems we might face:

The new API will crash if we call it on iOS 7
The new API won't compile if we build it using the iOS 7 SDK
The old API will raise a deprecation warning if built with a deployment target of iOS 8 and up

These three problems require three different technical solutions:

We can avoid calling the new API on an old OS version by using runtime detection (e.g. respondsToSelector:)
We can avoid compiling new APIs on old SDKs using the __IPHONE_OS_VERSION_MAX_ALLOWED macro

	git config --global https.proxy http://127.0.0.1:1080

	git config --global https.proxy https://127.0.0.1:1080

	git config --global --unset http.proxy

	git config --global --unset https.proxy


	npm config delete proxy

	# configure proxy for git while on corporate network
	# From https://gist.github.com/garystafford/8196920
	function proxy_on(){
	# assumes $USERDOMAIN, $USERNAME, $USERDNSDOMAIN
	# are existing Windows system-level environment variables

	# assumes $PASSWORD, $PROXY_SERVER, $PROXY_PORT
	# are existing Windows current user-level environment variables (your user)

	# environment variables are UPPERCASE even in git bash

	#!/bin/sh

	UNIVERSAL_OUTPUTFOLDER=${BUILD_DIR}/${CONFIGURATION}-universal

	# make sure the output directory exists
	mkdir -p "${UNIVERSAL_OUTPUTFOLDER}"

	# Step 1. Build Device and Simulator versions
	xcodebuild -target "${PROJECT_NAME}" ONLY_ACTIVE_ARCH=NO -configuration ${CONFIGURATION} -sdk iphoneos BUILD_DIR="${BUILD_DIR}" BUILD_ROOT="${BUILD_ROOT}" clean build
	xcodebuild -target "${PROJECT_NAME}" -configuration ${CONFIGURATION} -sdk iphonesimulator ONLY_ACTIVE_ARCH=NO BUILD_DIR="${BUILD_DIR}" BUILD_ROOT="${BUILD_ROOT}" clean build

	#!/bin/bash

	#
	# SignAndPackageForMAS.sh v1.0.1
	#
	# Codesign an app bundle and build a signed package ready for submission to the
	# Mac App Store
	#
	# Copyright (c) 2014 Felix Schwarz (@felix_schwarz), IOSPIRIT GmbH (@iospirit)
	#

	#!/bin/bash

	# Baidu Yun Command Line Interface

	# Depends: bash, curl, grep, awk, sed, od
	# (They are basicly builtin tools of any *nix system.)
	# Additionally, fastupload depends: head, wc, md5sum or md5, cksum
	# (Which are also builtin tools)

	#### Variables ####

	#!/bin/bash

	sudo kextunload -b com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport
	sudo kextload -b com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport

	// XPath CheatSheet
	// To test XPath in your Chrome Debugger: $x('/html/body')
	// http://www.jittuu.com/2012/2/14/Testing-XPath-In-Chrome/


	// 0. XPath Examples.
	// More: http://xpath.alephzarro.com/content/cheatsheet.html


	'//hr[@class="edge" and position()=1]' // every first hr of 'edge' class