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From lanxiazhi <lanxia...@gmail.com>
Subject Re: simple problem
Date Mon, 20 Jul 2009 08:21:39 GMT
Hello,everyone,I work on the problem this whole afternoon...
finally,I decided to end this with a macro:
#macro(expr $expression)
#set($temp--='#set($temp---'+"=$expression)"+'$temp---')
#evaluate($temp--)
$temp---
#end
#set($a=2)
#expr("$a*100+200")

which result in a 400.
wait for an easier way from you .
thanks

2009/7/20 lanxiazhi <lanxiazhi@gmail.com>

> thanks Rupali,
> I got this problem when I started to think that, can I simply output an
> expression like #{1+2+200000*3+$a}  without a varible?
>
> 2009/7/20 Rupali Gupta <r.gupta1@mpstechnologies.com>
>
> Hi,
>>
>>
>>
>> Use $velocityCount in place where you need incremental value of some
>> variable
>>
>> Eg: instead of,
>>
>>
>>
>>  #set($a = 0)
>>
>> #foreach($mapping in $mappings)
>>
>> Do something..
>>
>> #set($a = $a+1)
>>
>>
>>
>> <label for="journal-$a">Type something</label>
>>
>>
>>
>> Do it like:
>>
>>
>>
>> #foreach($mapping in $mappings)
>>
>> Do something..
>>
>> <label for="journal- $velocityCount ">Type something </label>
>>
>>
>>
>>
>>
>> $velocityCount increase the value of variable incrementally, without
>> having
>> to use ($a= $a+1)
>>
>>
>>
>> I hope this helps!
>>
>>
>>
>> Thanks,
>>
>> Rupali
>>
>>
>>
>>
>>
>>  _____
>>
>> From: lanxiazhi [mailto:lanxiazhi@gmail.com]
>> Sent: Monday, July 20, 2009 12:52 PM
>> To: Velocity Users List
>> Subject: Re: simple problem
>>
>>
>>
>> we know this #set($a = $a + 1) will change $a which in some cases may not
>> be
>> preferable...but thanks anyway.
>>
>> 2009/7/20 Alexander <the.malkolm@gmail.com>
>>
>> Hi,
>>
>>
>>
>> Use
>>
>>
>>
>> #set($a = $a + 1)
>>
>>
>>
>> Correct me if Im wrong but if u use variable like this it would write
>> "hello" on a single line, where is the problem?
>>
>>
>>
>> #set($newline="hello")
>>
>> $newline
>>
>>
>>
>>
>

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