Differences of single quotes and double quotes for text string

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Posted on by VoltesDev

Hi all,

Any differences if we use single quotes or double quotes for text string ?

For example in variable assignment or in select query condition ?

Is there any rule, lets say Best Practice rule for this ?

Thanks,

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Mingzhou Deng Microsoft Employee on at

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There is no difference in x++ code.

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Blue Wang Microsoft Employee on at

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HI VoltesDev,

Supplement to mingzhou's reply, please refer to this:

https://docs.microsoft.com/en-us/dynamicsax-2012/developer/x-csharp-comparison-string-case-and-delimiters

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VoltesDev on at

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Hi Blue,

I think it is different. I'm sorry, but I had to ask is the document you're sharing has a updated one that more comply with F&O current version ?

My finding is for text string use for variable / field assignment and X++ select query it is better to use single quotes, so it will not break BP Rule for Label Id.

Thanks,

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Blue Wang Microsoft Employee on at

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Hi VoltesDev,

Yes, there are specific situations that will make a difference.

For example, constants, or expressions in the query range use single quotes.

You can find some from here：

https://docs.microsoft.com/en-us/dynamicsax-2012/developer/x-standards-constants

http://www.axaptapedia.com/Expressions_in_query_ranges

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Blue Wang Microsoft Employee on at

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Hi Voltes,

Sorry, the link in the first reply is earlier, you can see this: docs.microsoft.com/.../xpp-cs-comparison

Search "Single" in Doc, you will find a lot.

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