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Objective-C中的instancetype和id关键字(转)
转自:Objective-C中的instancetype和id关键字一、什么是instancetype同id一样,都是表示未知类型的的对象。二、关联返回类型(related result types)根据Cocoa的命名规则,满足下述规则的方法:1、类方法中,以alloc或new开头2、实例方法中,...
分类:其他好文   时间:2014-08-08 20:53:06    阅读次数:201
Master Note for Diagnosing ORA-7445 and Related Core Dumps (文档 ID 1092855.1)
In this DocumentDetailsActionsConcepts/DefinitionsDiagnosing (starting point is Note 7445.1)Additional ResourcesCommunity: Incident (600-7445) Analysi...
分类:其他好文   时间:2014-08-06 18:25:41    阅读次数:339
实例详解Django的 select_related 和 prefetch_related 函数对 QuerySet 查询的优化(二)
这是本系列的第二篇,讲prefetch_related()函数的用途、实现途径、以及使用方法。...
分类:其他好文   时间:2014-08-05 19:31:20    阅读次数:267
ORA-600 [729] "UGA Space Leak" (文档 ID 31056.1)
Note: For additional ORA-600 related information please read Note:146580.1PURPOSE: This article discusses the internal error "ORA-600 [729]", what ...
分类:其他好文   时间:2014-08-05 15:40:39    阅读次数:237
A trip through the Graphics Pipeline 2011_13 Compute Shaders, UAV, atomic, structured buffer
Welcome back to what’s going to be the last “official” part of this series – I’ll do more GPU-related posts in the future, but this series is long eno...
分类:其他好文   时间:2014-08-05 02:56:18    阅读次数:427
DateTime Related Functions
The Oracle/PLSQL TO_DATE function converts a string to a date.TO_DATE( string1, [ format_mask ], [ nls_language ] )Parameters or Argumentsstring1 is t...
分类:其他好文   时间:2014-08-05 00:02:48    阅读次数:305
实例详解Django的 select_related 和 prefetch_related 函数对 QuerySet 查询的优化(一)
在数据库有外键的时候,使用 select_related() 和 prefetch_related() 可以很好的减少数据库请求的次数,从而提高性能。本文通过一个简单的例子详解这两个函数的作用。虽然QuerySet的文档中已经详细说明了,但本文试图从QuerySet触发的SQL语句来分析工作方式,从而进一步了解Django具体的运作方式。...
分类:其他好文   时间:2014-08-04 21:37:18    阅读次数:341
How to Analyze Problems Related to Internal Errors (ORA-600) and Core Dumps (ORA-7445) using My Oracle Support (文档 ID 260459.1)
Oracle Database - Enterprise Edition - Version 8.1.7.4 and later Information in this document applies to any platform. **Checked for relevance 06-Apr-...
分类:数据库   时间:2014-08-04 10:45:27    阅读次数:363
Method of offloading iSCSI TCP/IP processing from a host processing unit, and related iSCSI TCP/IP offload engine
A method of offloading, from a host data processing unit (205), iSCSI TCP/IP processing of data streams coming through at least one TCP/IP connection ...
分类:其他好文   时间:2014-08-04 01:40:36    阅读次数:248
svn merge error must be ancestrally related to
trunkmergebranch的时候报错xxxmustbeancestrallyrelatedtoxxx,这个报错的意思是两者不关联,所以需要去建立关联。【回顾背景】代码初始是先建立了branch,然后从branchcopytotrunk。这个先后顺序有问题。应该是先建立trunk,再打branch,branch修改之后,再合并到trunk【具体..
分类:其他好文   时间:2014-07-29 15:48:09    阅读次数:240
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