check item is in list and record?

Scripting Forums AppleScript | Mac OS X
#1

Hello I’ve found this bit of code that check if an item is in a list…


	set theList to {"a", "b", "c", "d"}
	set whatImLookingfor to "c"
	if whatImLookingfor is in theList(value) then
		display alert "Yes" giving up after 1
	else
		display alert "No" giving up after 1
	end if

but can someone tell me how to check for an item in a record?

set theList to {{letter:"a", value:1}, {letter:"b", value:2}, {letter:"c", value:3}, {letter:"d", value:4}}
set whatImLookingfor to "c"
if whatImLookingfor is in theList(letter) then -- this is the bit I'm not sure ha to reference!
	display alert "Yes" giving up after 1
else
	display alert "No" giving up after 1
end if

Thanks

LJ

#2

Hi,

your first script can’t work: theList(value) is a handler call with parameter value,
but there is no handler theList and no variable value defined


set theList to {"a", "b", "c", "d"}
set whatImLookingfor to "c"
if whatImLookingfor is in theList then
	display alert "Yes" giving up after 1
else
	display alert "No" giving up after 1
end if

you can parse a list of records only with a repeat loop


set theList to {{letter:"a", value:1}, {letter:"b", value:2}, {letter:"c", value:3}, {letter:"d", value:4}}
set whatImLookingfor to "c"
set flag to false
repeat with i in theList
	if i's letter is whatImLookingfor then
		set flag to true
		exit repeat
	end if
end repeat

if flag then -- this is the bit I'm not sure ha to reference!
	display alert "Yes" giving up after 1
else
	display alert "No" giving up after 1
end if
#3

Hi Stefan

Thanks for your reply, your right I should have removed the (value) from the first script.

Cool, that repeat loop work great!

thanks again.

LJ