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1.[Array valueforkey:@ "title"]; Returns An array containing the results of invoking valueforkey:using key on each of the array ' s objects. causes each object in the array to call the Valueforkey: method, and the result of invoking the method for

It allows you to iterate through the property values of an object, an array, and manipulate it.Instructions for useThe each function does not have exactly the same effect as the type of the parameter:1. Traversing objects (with additional parameters)

Http://www.w3school.com.cn/jsref/index.asp a method for accessing elements in HTML1.document.getelementbyid ("Id1"), in HTML, the name is an object of the ID1 element. Because the ID of the element is required to be unique, the Getelementid ()

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Object sorting A problem has been encountered in the work: Call the interface of someone's home to query the database, but the results of the query in the interface do not sort the results by time. So I used a method to sort the result set of the

NotforReplication is an attribute that can be applied to objects (such as Check constraints, foreign key constraints, triggers, and IdentityColumn) in SQLServer replication. This feature is used when the database administrator wants to make the

In the previous article, we introduced the GC mechanism in which the GC was judged by what criteria the object could be tagged, and the most effective and most commonly used accessibility analysis method.Today introduces another very common tagging

Write the outline design instructions correctly Before the need is clear, ready to start coding, to do the outline design, and the detailed design may be most of the company did not do, and do most of it and coding synchronization, or after coding.

So far, thread synchronization is most commonly used to ensure that multiple threads are mutually exclusive to shared resources. For synchronizing multiple threads in a single process for mutex access, the critical_section structure of Win32 API and

Serialization 6Original: fat Liu (please indicate the source and author for reprinting. Thank you .)(5) General principles for using the above four models1.When should I use the "primary extension mode "? The number of objects is small; the

General design method of Project Outline design book Asus Bo Net WWW.CHINA-B.C0M April 22, 2009 Source: the InternetASUS BO Network Core tip: Do the software to a certain level, it is necessary to consider the design, design for a long time, is not

The JQuery object in the JQuery object set is different from the DOM object. The JQuery object can be the DOM object encapsulation, but the JQuery object is not just the DOM object encapsulation, it can also represent its custom objects. Why do we

Serialization 6 Original: fat Liu (please indicate the source and author for reprinting. Thank you .) (5) General principles for using the above four models 1. When will I use the "primary extension mode "? The number of objects is small; the

Outline design How to write Do the software to a certain level, it is necessary to consider the design, design for a long time, is not a system, the system design needs a record, records on the use of documents, then the project all including

Write the summary design instructions correctly Before the requirements are clear and ready to begin coding, the outline design is done, and the detailed design may not be done by most companies, and most of the work is done in sync with the code,

Sys.extended_properties Table Field Extended Properties Sys.allocation_units Each allocation unit in the database occupies a row in the table. Sys.assembly_modules Returns a row for each function, procedure,

Object-Oriented Programming, my thoughts Preface: This document aims to help my colleagues better understand object-oriented programming. This allows later users to take less detours, but many vulnerabilities and errors are inevitable. We also ask

First, the abstract process:1, all things are objects.The concrete object of the dog and the house is the abstract concept of "service" as well as the object.You can use objects to store things. Dog objects can store dog head, dog legs and so on.

A Brief design should be done before the requirements are clear and the code is ready to begin. The detailed design may not be done by most companies, and most of the work is synchronized with the code or after encoding. Therefore, for most