Zhao Wang zwang

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zwang / JavascriptCorePerfTest.swift

Created December 11, 2015 08:51

Test the performance of functions calls in JavaScriptCore in iOS 8+

	class JSCContextTests: XCTestCase {

	var jscContext: JSContext!

	override func setUp() {

	jscContext = JSContext()

	let log_Binder: @convention(block) String -> Void = { input in
	print(input)

zwang / loadFont.swift

Last active March 23, 2022 12:33

Dynamically load font from a font file in swift in IOS

	static func loadFont(fontName: String, baseFolderPath: String) -> Bool {
	let basePath = baseFolderPath as NSString
	let fontFilePath = basePath.stringByAppendingPathComponent(fontName)
	let fontUrl = NSURL(fileURLWithPath: fontFilePath)
	if let inData = NSData(contentsOfURL: fontUrl) {
	var error: Unmanaged<CFError>?
	let cfdata = CFDataCreate(nil, UnsafePointer<UInt8>(inData.bytes), inData.length)
	if let provider = CGDataProviderCreateWithCFData(cfdata) {
	if let font = CGFontCreateWithDataProvider(provider) {
	if (!CTFontManagerRegisterGraphicsFont(font, &error)) {

zwang / simulator_populator

Last active August 29, 2015 14:26 — forked from cabeca/simulator_populator

This script removes and recreates all simulators in Xcode 6.

	#!/usr/bin/env ruby

	device_types_output = `xcrun simctl list devicetypes`
	device_types = device_types_output.scan /(.) $(.)$/

	runtimes_output = `xcrun simctl list runtimes`
	runtimes = runtimes_output.scan /(.) $.$ $(com.apple[^)]+)$$/

	devices_output = `xcrun simctl list devices`
	devices = devices_output.scan /\s\s\s\s(.) $([^)]+)$ (.)/

zwang / SystemLog.swift

Last active August 29, 2015 14:26 — forked from kristopherjohnson/SystemLog.swift

Demo of using the Apple System Log (ASL) API from Swift

	// Note: This must be used in an Xcode project that contains a bridging header
	// that includes <asl.h>

	import Foundation

	/// Provides high-level methods to access the raw data in
	/// an ASL message.
	struct SystemLogEntry {
	/// Key-value pairs read from ASL message
	let data: [String : String]

zwang / eval ex.clj

Created October 2, 2014 04:05

HackerRank evaluate e^x

	(dotimes [n (read-string (read-line))]
	(let [x (read-string (read-line)),
	ex (fn [x]
	(inc
	(reduce +
	(map #(/ (reduce * (repeat % x))
	(reduce * (range 1 (inc %)))
	)
	(range 1 10)
	)

zwang / tracing.clj

Created September 27, 2014 06:19

clojure marco to enable code tracing

	; From Clojure: the JFDI language by Michael O. Church

	; https://docs.google.com/presentation/d/16ccLdZ6Epp6Nu-lMansEErwAjbN4sau4LztaARmdl_k/edit#slide=id.g1793dde48_1508

	; Motivation: runtime tracing of functions is a powerful debug technique.
	; It’d require a framework to do this in Java, but in Clojure, a macro suffices!

	(defmacro tracing [code]
	`(do
	(println "The code was: " '~code)

zwang / write-file.clj

Created September 7, 2014 15:01

convert a file with word on each line to a json array. (pick only the first 2000 words)

	(defn convert [](with-open [rdr (reader "/Users/zhaowang/workspace/clojure/labrepl/data/words")]
	(doseq [line (take 2000 (line-seq rdr))]
	(writeToFile (str "\"" line "\"" ",")))))


	(defn writeToFile [line]
	(with-open [wrtr (writer "test.json" :append true)]
	(.write wrtr line)))

zwang / getLargestFactor.clj

Last active August 29, 2015 14:06

To calculate the largest prime factor of a number

	(ns scratch.core)

	(defn dividable? [number]
	#(zero? (mod number %))
	)

	(defn dividableByAny? [number divList]
	(> (count (filter (dividable? number) divList)) 0)
	)

zwang / removeTrailingSpace

Last active December 23, 2015 11:09

Remove trailing white space in Eclipse

	You can easily remove all the trailing whitespace within a single file by using
	a regular expression with the Find/Replace dialog. Enter [ \t]+$ in the "Find:" box
	and leave the "Replace with:" box empty. Check the "Regular expressions" option
	then click "Replace All"

zwang / center div.css

Last active December 19, 2015 22:09

Make the inner Div center horizontally and vertically in the outer div