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/**
# Usages:

pfv.start('some');
// some code
// some code
pfv.end();

pfv.check('ff', () => {
  // some code

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function forFunc(curr, compare, changer, actions) {
  if (compare(curr)) {
    actions(curr);
    return forFunc(changer(curr), compare, changer, actions);
  }
}

function iterateArr(arr, actions) {
  forFunc(0, i => i < arr.length, i => i+1, i => actions(arr[i], i));
}

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//DataSource.prototype.discoverSchemas
//async.parallel(tasks, function (err, results) {
//  console.log(results);
//https://github.com/strongloop/loopback-datasource-juggler/blob/master/lib/datasource.js#L1205
[ 
  [ 
    { owner: 'chosendb',
      tableName: 'chosentable',
      columnName: 'id' 
    },

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-(NSString *)md5:(NSString *)str {
    
    //转换成utf-8
    const char *cStr = [str UTF8String];
    
    //开辟一个16字节（128位：md5加密出来就是128位/bit）的空间（一个字节=8字位=8个二进制数）
    unsigned char result[16];
    
    CC_MD5( cStr, strlen(cStr), result);
    

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    SomeCell * cell = [tableView dequeueReusableCellWithIdentifier:@"someIdentifier"];
    
    if(cell == nil){
        cell = [[SomeCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"someIdentifier"];
        
    }

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@implementation UIButton (StretchableUIButton)
/* Automatically set cap insets for the background image. This assumes that
 the image is a standard slice size with a 1 px stretchable interior */
- (void)setBackgroundImageStretchableForState:(UIControlState)controlState
{
    UIImage *image = [self backgroundImageForState:controlState];
    if (image)
    {
        CGFloat capWidth =  floorf(image.size.width / 2);
        CGFloat capHeight =  floorf(image.size.height / 2);

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// 定义一个UIActionSheet
UIActionSheet *actionSheet = [[UIActionSheet alloc]
                              initWithTitle:@"Are you sure?"
                              delegate:self
                              cancelButtonTitle:@"No Way!"
                              destructiveButtonTitle:@"Yes, I'm Sure"
                              // 其他按钮，没有直接写nil
                              otherButtonTitles:@"Foo",@"Bar",nil];
                              
// 放到View中显示

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/*让position:fixed在IE6下可用! */
 
.fixed-top /* 头部固定 */{position:fixed;bottom:auto;top:0px;}
.fixed-bottom /* 底部固定 */{position:fixed;bottom:0px;top:auto;}
.fixed-left /* 左侧固定 */{position:fixed;right:auto;left:0px;}
.fixed-right /* 右侧固定 */{position:fixed;right:0px;left:auto;}
/* 上面的是除了IE6的主流浏览器通用的方法 */
* html,* html body /* 修正IE6振动bug */{background-image:url(about:blank);background-attachment:fixed;}
* html .fixed-top /* IE6 头部固定 */{position:absolute;bottom:auto;top:expression(eval(document.documentElement.scrollTop));}
* html .fixed-right /* IE6 右侧固定 */ {position:absolute;right:auto;left:expression(eval(document.documentElement.scrollLeft+document.documentElement.clientWidth-this.offsetWidth)-(parseInt(this.currentStyle.marginLeft,10)||0)-(parseInt(this.currentStyle.marginRight,10)||0));}

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<object type="application/x-shockwave-flash"
data="c.swf?path=movie.swf" 
width="400" height="300">
</object>

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  /**
	 * [checkMail 验证用户输入的邮箱格式是否正确]
	 * @param  {[string]} mailStr [已经去除两边空白的邮箱地址]
	 * @return {[int]}            [0,合法；1,不合法]
	 */
	function checkMail(mailStr){//验证邮箱格式
		if(mailStr.match(/^[\w-]+@[\w-]+((\.[\w-]{2,3}){1,2})$/gi)){return 0;}
		else{return 1;}
	}