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language explanation

Posted on 2004-09-18
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Last Modified: 2010-04-09
can someone please tell me what the {0} and the {1:f} do in the code below. f is just a number variable.
response.output.write("<tr><td>{0}</td><td>" & _
"{1:f}</td></tr>", f, ToCelsius(f))
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Question by:coletteck8
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Zyloch earned 100 total points
ID: 12092876
Hi coletteck8,

Er...

This is ASP.NET formatting.

Response.Output.Write can format a string, this actually is kind of like sprintf in other languages.


The things in {0} is kind of a backreference per say. The {0} means the first argument after this one, meaning f. The {1} indicates the next one, which is ToCelsius(f), and I believe you can have up to {2} in most cases.

So, if in the above, every {0} just means INSERT f there.

THe second one is {1:f}. The 1 is self-explanatory, insert the ToCelsius(f) there, but the f I believe is to make ToCelsius(f) a float, but I'm not sure...

Regards,
Zyloch
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by:coletteck8
ID: 12092907
thanks for the help even though i put it in the wrong area!
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LVL 36

Expert Comment

by:Zyloch
ID: 12092912
No problem, glad to help =)

I'm actually not too good at ASP, but many of the experts in this area know more than one web language at least partially.
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