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mongoDB/mongoose: unique if not null
... multiple docs without an email field.
See http://docs.mongodb.org/manual/core/index-sparse/
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Accessing MVC's model property from Javascript
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In ASP.Net Core, Json.Serialize()
– Mohammed Noureldin
Apr 7 '18 at 11:41
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创业者:在寻找 不迷茫 - 资讯 - 清泛网 - 专注C/C++及内核技术
...让一部分创业后来者感到生存“艰难”,但依然无法打消大多数人的创业想法。经历两年创业热潮,中国创业环境出现了新的常态,投资者更加慎重,对创业项目审核要求提高,投资范围也在缩小。这些让一部分创业后来者感到...
Twitter Bootstrap Customization Best Practices [closed]
...p directory like so:
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// CSS Reset
@import "bootstrap/reset.less";
// Core variables and mixins
@import "variables.less"; // Modify this for custom colors, font-sizes, etc
@import "bootstrap/mixins.less";
// Grid system and page structure
@import "bootstrap/scaffolding.less";
@import "bootstra...
浅谈HTML5 & CSS3的新交互特性 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...是,在搜索引擎中你却无法搜索到它,搜索引擎还没有强大到能够识别图片里面的文字。并且由于...本文标题的这副图片,是用Phosotshop制作的。但是,在搜索引擎中你却无法搜索到它,搜索引擎还没有强大到能够识别图片里面...
Any good, visual HTML5 Editor or IDE? [closed]
...ng requirements documents." There will be some things to iron out, and the core spec has some accompanying addon bits, but the majority of it is actually ready to use right away, with much of it stable in latest browsers.
sh...
中文网(自研/维护)拓展 · App Inventor 2 中文网
...e:起始角度; endAngle:结束角度; min:最小值; max:最大值; value:当前值。
Init(layout)
图表拓展初始化。参数是布局对象,指示图表显示的位置。
Line(title,legends,labels,datas,smooth)
画折线图。title:标题,文本; legends: ...
JavaScript frameworks to build single page applications [closed]
...tory, Jasmine for testing, as well as JQuery, Twitter Bootstrap, and Underscore.js (and probably more libraries I'm forgetting at the moment).
Javascript app development is more like the Java ecosystem than the Rails ecosystem. Rails provides a solid core of stuff you're going to use for every ap...
前有网易喂猪,后有宜信养牛 - 资讯 - 清泛网 - 专注C/C++及内核技术
...人心中都留有疑问。更有细心的网友发现,这样一组创意大胆、设计感十足的海报,居然是出自宜信——一家历来以严肃专业形象示人,踏踏实实做产品和服务的互联网金融行业领军企业,而非其他以各类营销见长的互联网企业...
各编程语言读写文件汇总 - C/C++ - 清泛网 - 专注C/C++及内核技术
...难以翻看自己写过的代码,网上搜索更是五花八门让人头大,鉴于此,清泛网 读写文件本来是非常基础的代码,但工作学习中难免会有遗忘,有时又难以翻看自己写过的代码,网上搜索更是五花八门让人头大,鉴于此,清泛网...
