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译文：理解Java中的弱引用 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...eakreference-in-java不久之前，我面试了一些求职Java高级开发工程师的应聘者。我常常会面试他们说，你能给我介绍一些Java中得弱引用吗？，如果面试者这样说，嗯...原文信息
文章出自 Understanding Weak References
作者为Ethan Nicholas，...
Swift - encode URL
...t 3:
let originalString = "http://www.ihtc.cc?name=htc&title=iOS开发工程师"
1. encodingQuery:
let escapedString = originalString.addingPercentEncoding(withAllowedCharacters:NSCharacterSet.urlQueryAllowed)
result:
"http://www.ihtc.cc?name=htc&title=iOS%E5%BC%80%E5%8F%91%E5%B7%A5%E...
一文了解大数据领域创业的机会与方向 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...企业在做可视化服务，比如说国云数据的大数据魔镜。
第五个是行业大数据应用。为社交媒体、广告公司、企业客户、电子商务等行业客户提供数据分析，帮助这些行业提升数据分析的水平，如DataSift、RelateIQ、RocketFuel等创业...
Spring DAO vs Spring ORM vs Spring JDBC
.../docs.spring.io/spring/docs/current/spring-framework-reference/htmlsingle/
PDF: http://docs.spring.io/spring/docs/current/spring-framework-reference/pdf/spring-framework-reference.pdf
Spring-data is not part of the Spring framework. There is a common module that you should first read to get used t...
Subscript and Superscript a String in Android
...
Hi, yes is unicode, here a PDF whit all unicodes unicode.org/charts/PDF/U2070.pdf
– Gerardo Salazar Sánchez
Aug 30 '19 at 22:12
...
File input 'accept' attribute - is it useful?
...
I needed to accept JPG, PNG, GIF, PDF, and EPS files, but accept='.jpg,.png,.gif,.pdf,.eps' didn't allow any selection. I tried many variations - space delimited, no dot characters, etc., but no dice in Chrome v20, so I ended up using the mime types and it wo...
What's the difference between the four File Results in ASP.NET MVC
...self here as a result of an interesting situation. We were delivering some pdf attachments via the MVC3/C# environment. Our code got released and we started getting some responses from our clients that the downloads were behaving strangely when they were using Chrome and the file type was being conv...
How to add \newpage in Rmarkdown in a smart way?
...```{r, echo=FALSE}
plot(1:10)
```
This solution assumes you are knitting PDF. For HTML, you can achieve a similar effect by adding a tag <P style="page-break-before: always">. Note that you likely won't see a page break in your browser (HTMLs don't have pages per se), but the printing layout...
Landscape printing from HTML
...
The final alternative I have found is to create a landscape version in a PDF. You can point to so when the user selects print it prints the PDF. However I could not get this to auto print work in IE7.
<link media="print" rel="Alternate" href="print.pdf">
In conclusion in some browsers it ...
Intelligent point label placement in R
... my solution to this problem:
I did this by hand in Preview (very basic PDF/image viewer on OS X) in just a few minutes. (Edit: The workflow was exactly what you'd expect: I saved the plot as a PDF from R, opened it in Preview and created textboxes with the desired labels (9pt Helvetica) and then...