Oddity: Subtracting .5

[webmigit]

When you're coding against a deadline, you find the way to make something work and work securely, there's no time to play with other ways to accomplish the same things... Now here's the question...

I wanted to subtract half of an amount from a database:

#Evaluate(sAmount - .5)#

doesn't work and I don't understand why... is there any way to subtract .5.

Never fear though! Its a bit longer but it does work.. the length is the whole reason I ask this question but...

#Evaluate(sAmount - (1 / 2))#

does work perfectly..

Anyone do it diffrently... maybe a few less characters?

Tony

 

[CFDude]

What is the result that you get? What do you mean by it doesn't work?

What version of CF? Just tried it on MX and it works fine -- you don't need Evaluate by the way.

 

[csteinhilber]

What do you mean by "half of an amount"? Do you mean you want the result to be half of the original number?

Try something like:

<cfset fullme = 100>
<cfset halfofme = fullme * 0.5>

<cfoutput>#halfofme#</cfoutput>
<!--- should output &quot;50&quot; --->

You can use .5 ... but you have to put 0 in front of it.
Though what your code seems to be wanting to do is:

<cfset fullme = 100>
<cfset halfofme = fullme - 0.5>

<cfoutput>#halfofme#</cfoutput>
<!--- should output &quot;99.5&quot; --->

Not sure which is desired.

 

[webmigit]

Oops I meant to say half of one.. sorry was in a hurry earlier and thanks cstein.. I feel kinda stupid for overlooking that, I was just in a hurry for a method that worked.. haha... 0.5 rather than .5.. lol

Tony