- Array 是 value type,使用 structs 实现
- 数据类型没有隐式转换
- 对于 String,count() 的复杂度是 O(n),每一个 Character 都是 unicode scalars 的序列
- raw values 和 associated values 的区别
- 如果必要,对于实现了 _ObjectiveCBridgeable 的 value types 会被自动桥接成 reference types
- 讲一下 unowned 和 weak 的区别
- 改 struct 的属性的方法名前要加 mutating,但如果这个 struct 用 let 声明的,改不了。修正:网友指出用 nonmutating set 也可以改属性。
- nil 和 .None 的区别
- capture list in closure
- 举一个 guard ... where 的例子
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#include <assert.h> | |
#include <stdlib.h> | |
#include <string.h> | |
#include <stdint.h> | |
#include <stdio.h> | |
#define N (100000063/64) | |
struct bitset { | |
uint64_t bits[N]; |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Total: 1~5 | |
下面各项得分的平均分 | |
Experience: 1~5 | |
过往项目的客户群(ToB or ToC)、项目规模、项目中担当的角色、是否有突出贡献等等 | |
Skill: 1~5 | |
开发基础、设计能力、能否攻克中大型开发难题,能否担当 full stack 任务等等 | |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import Cocoa | |
import CreateML | |
let 双色球神算子 = try MLTextClassifier(trainingData: [ | |
"中奖啦": [ | |
"09 11 14 20 27 30 09", | |
"02 09 14 15 16 23 10", | |
"11 16 19 22 25 30 08", | |
"02 05 06 13 16 19 03", | |
"04 09 15 16 19 27 10", |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
// | |
// Device.swift | |
// imHome | |
// | |
// Created by Kevin Xu on 2/9/15. Updated on 6/20/15. | |
// Copyright (c) 2015 Alpha Labs, Inc. All rights reserved. | |
// | |
import Foundation |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
# !/usr/bin/env python | |
# -*- coding: utf-8 -*- | |
__author__ = 'Diego Garcia' | |
import tornado.web | |
import tornado.ioloop | |
import oauth2.tokengenerator | |
import oauth2.grant | |
import oauth2.store.redisdb | |
import oauth2.store.mongodb |
WARNING These steps are probably out dated and will not work.
To re-sign an iOS app with another developer account, ensure that the following are in place first.
- Distribution certificate of the other developer account
- A provisioning profile from the other developer account
Note that the Apple requires bundle IDs to be globally unique, even across accounts. So a bundle ID i.e. CFBundleIdentifier
from one account can't be used in a different account, even though the team id/prefix would be different.
Ensure that the new distribution certificate is in your keychain and the new provisioning profile on your disk.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#!/bin/bash | |
set -ex | |
# This scripts allows you to upload a binary to the iTunes Connect Store and do it for a specific app_id | |
# Because when you have multiple apps in status for download, xcodebuild upload will complain that multiple apps are in wait status | |
# Requires application loader to be installed | |
# See https://developer.apple.com/library/ios/documentation/LanguagesUtilities/Conceptual/iTunesConnect_Guide/Chapters/SubmittingTheApp.html | |
# Itunes Connect username & password | |
USER=bla |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import Foundation | |
/// An abstract class that makes building simple asynchronous operations easy. | |
/// Subclasses must implement `execute()` to perform any work and call | |
/// `finish()` when they are done. All `NSOperation` work will be handled | |
/// automatically. | |
open class AsynchronousOperation: Operation { | |
// MARK: - Properties |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
# 1. FFMPEG 编程开发教程 | |
地址:http://dranger.com/ffmpeg/tutorial01.html | |
* AVPicture 是 AVFrame的子集,即两个数据结构的前面部分是一致的, 因此AVFrame可以指针转换为AVPicture |
NewerOlder