大约有 43,000 项符合查询结果(耗时:0.0545秒) [XML]

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Select values from XML field in SQL Server 2008

... Blimey. This was a really useful thread to discover. I still found some of these suggestions confusing. Whenever I used value with [1] in the string, it would only retrieved the first value. And some suggestions recommended using cross apply which (in my te...
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Does anyone still use [goto] in C# and if so why? [closed]

... There are some (rare) cases where goto can actually improve readability. In fact, the documentation you linked to lists two examples: A common use of goto is to transfer control to a specific switch-case label or the default label in a switch statement. The goto statement is also use...
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@Media min-width & max-width

...he older browsers, as older browsers including i.e. 5.5, 6, 7 and 8. Can't read @media. When I use @media I use it like this: <style type="text/css"> /* default styles here for older browsers. I tend to go for a 600px - 960px width max but using percentages */ @media only ...
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Best practice for Python assert

... @VajkHermecz: Actually, if you reread the question, this is two questions in one. People only looking at the title are only familiar with the first question, which this answer doesn't answer. This answer actually contains an answer to the second question. ...
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An “and” operator for an “if” statement in Bash

... comment was made before you edited your comment, when your comment merely read "the code ... would have failed". A simple solution is to use ${STATUS:-0". Will edit. – William Pursell Nov 16 '12 at 0:33 ...
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How to delete/unset the properties of a javascript object? [duplicate]

... simply use delete, but be aware that you should read fully what the effects are of using this: delete object.index; //true object.index; //undefined but if I was to use like so: var x = 1; //1 delete x; //false x; //1 but if you do wish to delete variables in the g...
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What is the difference between & and && in Java?

...r than && and ||. Why do we want to check second condition if we already can have answer? Can you provide and realistic example, please? – Michu93 Jul 13 '17 at 14:24 ...
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What is the benefit of using $() instead of backticks in shell scripts?

...st as an illustration as to how you can nest, not as a bug-free production-ready snippet. share | improve this answer | follow | ...
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What's the state of the art in email validation for Rails?

...ed from http://www.regular-expressions.info/email.html -- which you should read if you really want to know all the tradeoffs. If you want a more correct and much more complicated fully RFC822-compliant regex, that's on that page too. But the thing is this: you don't have to get it totally right. ...
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querySelector, wildcard element match?

...nd to use tag_name over tagName, so you do not run into interferences when reading 'computer generated', implicit DOM attributes. share | improve this answer | follow ...