I have a very simple task I am trying to do in Groovy but cannot seem to get it to work. I am just trying to loop through a map object in groovy and print out the key and value but this code does not work.
// A simple map
def map = [
iPhone : 'iWebOS',
Android: '2.3.3',
Nokia : 'Symbian',
Windows: 'WM8'
]
// Print the values
for (s in map) {
println s + ": " + map[s]
}
I am trying to get the output to look like this:
iPhone: iWebOS
Android: 2.3.3
Nokia: Symbian
Windows: WM8
Could someone please elaborate on how to do this??
This question is related to
dictionary
groovy
When using the for loop, the value of s is a Map.Entry element, meaning that you can get the key from s.key and the value from s.value
Another option:
def map = ['a':1, 'b':2, 'c':3]
map.each{
println it.key +" "+ it.value
}
Alternatively you could use a for
loop as shown in the Groovy Docs:
def map = ['a':1, 'b':2, 'c':3]
for ( e in map ) {
print "key = ${e.key}, value = ${e.value}"
}
/*
Result:
key = a, value = 1
key = b, value = 2
key = c, value = 3
*/
One benefit of using a for
loop as opposed to an each
closure is easier debugging, as you cannot hit a break point inside an each
closure (when using Netbeans).
Source: Stackoverflow.com