Solving equations (was Re: Unquoting a string)
Solving equations (was Re: Unquoting a string)
- Subject: Solving equations (was Re: Unquoting a string)
- From: JollyRoger <email@hidden>
- Date: Mon, 15 Jul 2002 08:33:19 -0500
What you are trying to do is actually very easy.
You don't need to remove quotes. All you need to do is make the string a
script by appending something like "set x to " to the equation, and then
telling AppleScript to run the string as if it were a script.
Example:
-- begin script
-- ask user for an equation
display dialog "Please type an equation here:" default answer "Type Here..."
-- get the equation text
set equation to (text returned of the result)
-- run the equation text as a script, putting the result in answer
set the answer to run script equation
-- display the result
display dialog "the result is: " & answer buttons "Cool!" default button 1
-- end script
...or:
-- begin script
-- ask user for an equation
display dialog "Please type an equation here:" default answer "Type Here..."
-- one-liner
display dialog "the result is: " & (run script (text returned of the
result)) buttons "Cool!" default button 1
-- end script
HTH
JR
On 7/14/2002 6:32 PM, "Robert Stretch" <email@hidden> wrote:
>
Hi there,
>
>
If I have the small scripts:
>
>
2 * 2 OR 2 + 2 etc...
>
>
The only way for AppleScript not to recognize them as a string of text
>
is for me not to have them in quotes (" "). So what happens when I have
>
a dynamic string of text which needs to be equated? For example if i
>
display a dialog with a text field like so:
>
>
set theEquation to display dialog "Please type an equation here:"
>
default answer "Type Here..."
>
>
Then the result is a QUOTED equation. So my question is, after all
>
that, how do I make it so that AppleScript recognizes the equation for
>
what it is supposed to be, an unquoted equation, and calculate it?
>
>
Best Wishes
>
Robert Stretch
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