Groovy: lists: Set the element at given position

There are three ways to set element at given position.

a.   Using index notation

b.   Using putAt method

c.    Using set method

HelloWorld.groovy

evenNumbers = [0, 2, 4, 6]

evenNumbers[0] = 8
evenNumbers.putAt(1, 10)
evenNumbers.set(2, 12)

println evenNumbers

Output

[8, 10, 12, 6]

‘set' method return old value in the list.

HelloWorld.groovy

evenNumbers = [0, 2, 4, 6]

oldValue = evenNumbers.set(2, 12)

println "oldValue : ${oldValue}"
println "evenNumbers : ${evenNumbers}"

Output

oldValue : 4

evenNumbers : [0, 2, 12, 6]

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