[GROOVY-3024] map.entrySet().each { it.value = "foo" } should either update map or explode

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Not A Problem
• Fix Version/s: 1.5.7
• Assignee: Unassigned
• Reporter: Robert Fischer
• Created: 29/Aug/08 14:15
• Updated: 12/Oct/08 08:46
• Resolved: 29/Aug/08 23:35

Description

def x = [a:1, b:2, c:3]
x.entrySet.each

{ it.value = it.value * it.value }

println x

1. Prints [a:1, b:2, c:3] – would expect it to print [a:1, b:4, c:9], or to explode.
2. Instead of either updating or exploding, it silently fails.
3. Note: http://java.sun.com/j2se/1.5.0/docs/api/java/util/Map.html#entrySet() – the entrySet is explicitly backed by the map,
4. and by requirement of the Java API, changes to the entrySet must be reflected in the underlying map.