Differences

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--- yield [2018/04/22 10:10] – created wolfgangriedmann
+++ yield [2018/04/22 10:20] (current) – wolfgangriedmann
@@ Line 48: / Line 48: @@
 WriteLine( "end creating list" )
 </code>
-This code produces the following output:
+This code produces the following output (please note that the output is created by the calling function **before** the called function is finished!):
 <code>start creating list
 c:\bootmgr
@@ Line 58: / Line 58: @@
 c:\swapfile.sys
 end creating list</code>
+To explain a bit more: the ''yield'' returns the member of the list, and the calling code can work immediatly with instead of waiting for the called function to be complete.
+This is particularly useful if you have longer processes and need to refresh the user interface.