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Using forEach correctly [message #1735701]

Wed, 22 June 2016 06:22

chris yo

Messages: 146
Registered: February 2013

Senior Member

I used a forEach in my list but it seems that it deletes the elements.

val x = resource.allContents.toIterable.filter(typeof(Directory))
// x.size here is 5.
x.forEach[isPersonal = true] // set the variable isPersonal to true.
// x.size here is now 0.

What am i doing wrong?

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Re: Using forEach correctly [message #1735702 is a reply to message #1735701]

Wed, 22 June 2016 06:37

Christian Dietrich

Messages: 14699
Registered: July 2009

Senior Member

this is a flaw of the toIterable extension.
it creates an iterator that iterates only one.

solution:

make a copy of the iterable e.g.

.toIterable.toList

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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