ruandao

    AVAudioSession* session = [AVAudioSession sharedInstance];
    if ([session respondsToSelector:@selector(requestRecordPermission:)]) {
        [session performSelector:@selector(requestRecordPermission:) withObject:^(BOOL granted) {
            if (granted) {
                // Microphone enabled code
                NSLog(@"Microphone is enabled..");

                dispatch_async(dispatch_get_main_queue(), ^{
                    
                    if (!self.recordBtn.selected) {

ruandao

    public override class func initialize() {
        
        struct Static {
            static var token: dispatch_once_t = 0
        }

        if self !== RCChatListViewController.self {
            return
        }
        

ruandao

    public override class func initialize() {
        
        struct Static {
            static var token: dispatch_once_t = 0
        }

        if self !== RCChatListViewController.self {
            return
        }
        

ruandao

import Foundation


public struct RAC  {
    var target: NSObject
    var keyPath: String
    var nilValue: AnyObject?
    
    public init(_ target: NSObject, _ keyPath: String, nilValue: AnyObject? = nil) {

ruandao

// 迭代
function fib(n) {
  function fib-iter(i,n_1, n_2, n) {
    if 0 == n {
      return 0
    }
    if 1 == n {
      return 1
    }
    if i == n {

ruandao

p2p下载，
你只能向你的朋友借流量，
你可以查看你向谁借了多少流量，
你借给谁多少流量，
你的朋友可能为了你向他的朋友借流量，
当你要下载时，
你会向你的朋友借流量，
你的朋友查看本地是否有这个文件，
没有的话，
他可以帮你下载一部分文件，

ruandao

#!/bin/sh
#
# git autodeploy script when it matches the string "[deploy]"
#
# @author    icyleaf <icyleaf.cn@gmail.com>
# @link      http://icyleaf.com
# @version   0.1
#
# Usage:
#       1. put this into the post-receive hook file itself below

ruandao

"use strict";

var koa = require('koa');
var app = koa();

var bodyParser = require('koa-bodyparser');
var fs = require('fs');


app.use(bodyParser());

ruandao

;#lang planet neil/sicp 
#lang racket
(require (planet soegaard/sicp:2:1/sicp))
(define wave einstein)

(define (list-tree elements)
  (car (partial-tree elements (length elements))))

(define (partial-tree elts n)
  (if (= n 0)

ruandao

;#lang planet neil/sicp 
#lang racket
(require (planet soegaard/sicp:2:1/sicp))
(define wave einstein)


(define (union-set set1 set2)
  (define (union-list l1 l2)
    (cond ((null? l1) l2)
          ((null? l2) l1)