[GROOVY-99] modify variables outside closures, then recalling the closure does not use new value

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.0-beta-3
• Assignee: Unassigned
• Reporter: James Strachan
• Created: 30/Dec/03 04:46
• Updated: 12/Jan/04 08:04
• Resolved: 12/Jan/04 08:04

Description

a = 0
b = 1

x =

{ System.out.println('on entry to closure a = ' + a) System.out.println('on entry to closure b = ' + b) a++ System.out.println('on exit from closure a = ' + a) System.out.println('on exit from closure b = ' + b) }

x.setDelegate(this)

System.out.println('before first call a = ' + a)
System.out.println('before first call b = ' + b)

x.call()

System.out.println('after first call a = ' + a)
System.out.println('after first call b = ' + b)
System.out.println()

a *= 2
b *= 2

System.out.println('before second call a = ' + a)
System.out.println('before second call b = ' + b)

x.call()

System.out.println('after second call a = ' + a)
System.out.println('after second call b = ' + b)

This produces:

before first call b = 1
on entry to closure a = 0
on entry to closure b = 1
on exit from closure a = 1
on exit from closure b = 1
after first call a = 1
after first call b = 1

before second call a = 2
before second call b = 2
on entry to closure a = 2
on entry to closure b = 1
on exit from closure a = 3
on exit from closure b = 1
after second call a = 3
after second call b = 2

You will see that b is still 1 in the second call to the closure.