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推荐引擎easyrec半天学习分享 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
推荐引擎easyrec半天学习分享推荐引擎（Recommendation）的原理，大家可以参考这个文章：探索推荐引擎内部的秘密，第 1 部分: 推荐引擎初探这两天在学习推荐引擎，昨...推荐引擎（Recommendation）的原理，大家可以参考这个文章：
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js + css 实现Div弹出效果 - 更多技术 - 清泛网 - 专注C/C++及内核技术
js + css 实现Div弹出效果效果截图：html源码：<html><meta http-equiv="Content-Type" content="text html; charset=utf-8" ><title>弹出div效果< title><body...效果截图：
html源码：
<html>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>弹...
自定义下载器扩展：个性化下载进度展示 - App Inventor 2 拓展 - 清泛IT社...
Customdownloader Extension
Documentation
Event triggered when an error occurs during download.
Successful Download downloadId, filePath, fileSize, fileName
Event triggered to report download progress, speed, eta, fileSize, and downloadedSize
Download the file of given URL to t...
BrightnessTools 拓展：设置手机亮度的工具 - App Inventor 2 拓展 - 清泛I...
BlocksDescription
Raises when error occurred
ParamsTypeDescriptionerrorStringReturn a description of error
Triggered when detected any brightness or adaptive change. The param &quot;changed&quot; indicate what has change.
ParamsTypeDescriptionchangedNumber (int)Return what has been chang...
Should IBOutlets be strong or weak under ARC?
I am developing exclusively for iOS 5 using ARC. Should IBOutlet s to UIView s (and subclasses) be strong or weak ?
11...
Are soft deletes a good idea? [duplicate]
Are soft deletes a good idea or a bad idea?
15 Answers
15
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Proper MIME type for OTF fonts
Searching the web, I find heaps of different suggestions for what the proper MIME type for a font is, but I have yet to try any MIME type that rids me of a Chrome warning such as the following:
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What is a serialVersionUID and why should I use it?
Eclipse issues warnings when a serialVersionUID is missing.
26 Answers
26
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Always pass weak reference of self into block in ARC?
I am a little confused about block usage in Objective-C. I currently use ARC and I have quite a lot of blocks in my app, currently always referring to self instead of its weak reference. May that be the cause of these blocks retaining self and keeping it from being dealloced ? The question is, s...
How to convert std::string to NSString?
Hi I am trying to convert a standard std::string into an NSString but I'm not having much luck.
6 Answers
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