大约有 40,000 项符合查询结果(耗时:0.0353秒) [XML]

https://stackoverflow.com/ques... 

PostgreSQL: Difference between text and varchar (character varying)

... article does detailed testing to show that the performance of inserts and selects for all 4 data types are similar. It also takes a detailed look at alternate ways on constraining the length when needed. Function based constraints or domains provide the advantage of instant increase of the length c...
https://stackoverflow.com/ques... 

Disable/enable an input with jQuery?

....prop() or .attr() methods is that you can set the property for a bunch of selected items. Note: In 1.6 there is a .removeProp() method that sounds a lot like removeAttr(), but it SHOULD NOT BE USED on native properties like 'disabled' Excerpt from the documentation: Note: Do not use this me...
https://stackoverflow.com/ques... 

Is it safe to remove selected keys from map within a range loop?

How can one remove selected keys from a map? Is it safe to combine delete() with range, as in the code below? 4 Answers ...
https://stackoverflow.com/ques... 

Eclipse: How do you change the highlight color of the currently selected method/expression?

...from the Annotation types list. Then, be sure that Text as highlighted is selected, then choose the desired color. And, a picture is worth a thousand words... (source: coobird.net) (source: coobird.net) share ...
https://stackoverflow.com/ques... 

How do I fix the Visual Studio compile error, “mismatch between processor architecture”?

... item. Find your project in the list, under Platform it will say "Any CPU" Select the "Any CPU" option from the drop down and then select <New..> From that dialog, select x86 from the "New Platform" drop down and make sure "Any CPU" is selected in the "Copy settings from" drop down. Hit OK You...
https://stackoverflow.com/ques... 

Schema for a multilanguage database

...t PostGreSQL with hstore), you can't pass a parameter language, and say: SELECT ['DESCRIPTION_' + @in_language] FROM T_Products So you have to do this: SELECT Product_UID , CASE @in_language WHEN 'DE' THEN DESCRIPTION_DE WHEN 'SP' THEN DESCRIPTION_SP EL...
https://stackoverflow.com/ques... 

iOS: How to store username/password within an app?

... 3 right-click on frameworks folder and add existing framework. In Xcode 4 select your project, then select target, go to Build Phases tab and click + under Link Binary With Files) and KeychainItemWrapper .h & .m files into your project, #import the .h file wherever you need to use keychain and ...
https://stackoverflow.com/ques... 

The selected run destination is not valid for this action

...ject icon in the left hand panel. 2) In the right hand panel that appears, select Build Settings » all. 3) You'll see the option to change the SDK. Screenshot: img546.imageshack.us/img546/9808/picture3fh.png – cwd Dec 16 '11 at 23:12 ...
https://stackoverflow.com/ques... 

In PHP with PDO, how to check the final SQL parametrized query? [duplicate]

..... and finally EXECUTE .... You won't be able to get some SQL string like SELECT * FROM ..., even if it would produce equivalent results, because no such query was ever actually sent to the database. share | ...
https://stackoverflow.com/ques... 

Modifying location.hash without page scrolling

... load if(document.location.hash){ $("#buttons li a").removeClass('selected'); s=$(document.location.hash.replace("btn_","")).addClass('selected').attr("href").replace("javascript:",""); eval(s); } //Click a button to change the hash $("#buttons li a").click(function()...