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25 Dec 09

nature - Google Search

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  • Web›Images›MediumShow options...Hide options<script>google.isr||(google.isr={});google.isr.imgtbs=''</script>

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Installing the Android SDK | Android Developers

    • There are several types of SDK components available:



      • SDK Tools (available pre-installed in the Android SDK
        package) — Contains the full set of SDK tools for developing, debugging,
        and testing your application code and UI. You can read about the tools in the Dev Guide and access them
        in the <sdk>/tools/ directory.
      • Android platforms — An SDK platform component is
        available for every production Android platform deployable to Android-powered
        devices. Each platform component includes a fully compliant Android library and
        system image, sample code, emulator skins, and any version specific tools. For
        detailed information about each platform, see the overview documents available
        under the section "Downloadable SDK Components," at left.
      • SDK Add-Ons — SDK add-ons provide a development
        environment for specific Android external
        library or a customized (but fully compliant) Android system image. The Android
        SDK repository offers the Google APIs Add-On, which gives your application
        access to powerful mapping capabilities through the
        com.google.android.maps library. You can also add additional
        repositories, so that you can download other SDK add-ons, where available.
      • Documentation — Contains a local copy of the latest
        multiversion documentation for the Android framework API.
20 Oct 09

Group Wordpress's best content

  • Everything to do with the Open Source blogging software Wordpress. Templates, plugins, hacks, whatever you find suitable
30 Aug 09

Types and Property Classes - Google App Engine - Google Code

  • A query cannot compare two list values. There is no way to test two lists for equality without testing each element for membership separately.
  • : A model instance can be assigned to a ReferenceProperty directly, and its key will be used. The ReferenceProperty value can be used as if it were a model instance, and the datastore entity will be fetched and the model instance created when it is first used in this way.

Keys and Entity Groups - Google App Engine - Google Code

  • Every entity in the datastore has a key, an identifier unique to the entity across all entities for an application. A key has several components: a path describing a parent-child relationship between the entity and another entity, the kind of the entity, and either a name assigned to the entity by the application or a numeric ID assigned by the datastore.
29 Aug 09

Permalink - Wikipedia, the free encyclopedia

  • Crucially, if an item is changed, renamed, or moved within the internal database, its permalink remains unaltered, as it functions as a magic cookie which references an internal database identifier. If an item is deleted altogether, its permalink can frequently not be reused.

  • Permalink detection


    Permalinks can be indicated within the HTML of a page so as to allow automated browsing tools to detect the permalink and use it for linking instead of the stated URL. The link element should include the following attributes:


    <link rel="bookmark" href="[Permalink URL]" />

28 Aug 09

Python Runtime Environment - Google App Engine - Google Code

  • We recommend that all applications use a main() routine
  • You can tell App Engine to cache the handler script itself, in addition to imported modules. If the handler script defines a function named main(), then the script and its global environment will be cached like an imported module. The first request for the script on a given web server evaluates the script normally. For subsequent requests, App Engine calls the main() function in the cached environment.
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27 Aug 09

Datastore Python API Overview - Google App Engine - Google Code

  • The App Engine datastore stores and performs queries over data objects, known as entities. An entity has one or more properties, named values of one of several supported data types. A property can be a reference to another entity.
  • A data object in the App Engine datastore is known as an entity. An entity has one or more properties, named values of one of several data types, including integers, floating point values, strings, dates, binary data, and more.
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24 Aug 09

谈网站导航设计:不是所有的网站都需要导航

  • 我们必须明确，导航的出现是因为在一个页面中无法同时展现那么多的内容；也就是说导航是无奈之举，并非必需品。
  • 越来越多精巧的设计将导航和面包屑融合在一起，完美的解决了“你在哪里”“你可以去哪里”这两个最本质的导航问题
23 Aug 09

Using the Datastore - Google App Engine - Google Code

  • greetings = Greeting.gql("ORDER BY date DESC LIMIT 10")
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