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Collections, Lists, etc.
Why don't return statements work when iterating through an object?
The {...} in an each statement is not a normal Java block of code, but a closure. Closures are like classes/methods, so returning from one simply exits out of the closure, not the enclosing method.
How do I declare and initialize a list at the same time?
Syntax:
How do I declare and initialize a traditional array at the same time?
Syntax:
or
or
Why does myMap.size or myMap.class return null?
In Groovy, maps override the dot operator to behave the same as the index[ ] operator:
Why is my map returning null values?
Chances are, you tried to use a variable as a key in a map literal definition.
Remember, keys are interpreted as literal strings:
Try this (note the parentheses around the key):
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