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Difference between “@id/” and “@+id/” in Android

In @+id/ the plus symbol + instructs to create a new resource name and add in to the R.java file but what about @id/ ? From the documentation of ID : when referencing an Android resource ID , you do not need the plus symbol, but must add the android package namespace, like so: ...
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Differences between Oracle JDK and OpenJDK

...mostly based on HotSpot source code donated by Sun. Moreover, OpenJDK was selected to be the reference implementation for Java 7 and is maintained by Oracle engineers. There's a more detailed answer from 2012 on difference between JVM, JDK, JRE & OpenJDK, which links to an Oracle blog post: ...
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What makes Lisp macros so special?

...could write a macro that lets you say something like: (setvar *rows* (sql select count(*) from some-table where column1 = "Yes" and column2 like "some%string%") And thats not even getting into Reader macros. Hope this helps. ...
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How can I change my Cygwin home folder after installation?

...nced >> Environment Variables >> User Variables for >> [select variable HOME] >> edit share | improve this answer | follow | ...
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What is the most accurate way to retrieve a user's correct IP address in PHP?

...and anonymous proxy servers is just something I'll have to deal with for a select group of individuals. – Corey Ballou Oct 28 '09 at 10:04 ...
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Deep Learning(深度学习)学习笔记整理系列之(一) - 大数据 & AI - 清泛...

...sten Wiesel 发现了一种被称为“方向选择性细胞(Orientation Selective Cell)”的神经元细胞。当瞳孔发现了眼前的物体的边缘,而且这个边缘指向某个方向时,这种神经元细胞就会活跃。 这个发现激发了人们对于神经系统的进...
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How can I make git accept a self signed certificate?

... respond to SSL challenges. http.sslCert http.sslCertPasswordProtected Selectively apply the above settings to specific hosts. http.<url>.* Global .gitconfig for Self-Signed Certificate Authorities For my own and my colleagues' sake here is how we managed to get self signed certificat...
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Should I use pt or px?

...he terms "uppercase" and "lowercase" which historically had to do with the selection of the fixed typographical characters where the "captital" characters where placed in a box (case) above the non-captitalized characters which were place in a box below, and thus the "lower" case. There were differ...
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Can an html element have multiple ids?

I understand that an id must be unique within an HTML/XHTML page. 18 Answers 18 ...
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What's the difference between an id and a class?

What's the difference between <div class=""> and <div id=""> when it comes to CSS? Is it alright to use <div id=""> ? ...