syntax - What does a := (colon equals) in VB.NET do? -


possible duplicate:
what use of := syntax?

i've tried hunting down mdsn documentation := in vb.net scoured google linked dead msdn page... purpose of := be?

it names arguments, allowing call method arguments in order other specified in method definition.

for example:

sub foo (byval x long, byval y long)    debug.print (string.format("{0}, {1}", x.tostring, y.tostring)) end function

can called order of arguments reversed using names:

foo (y:=999, x:=111)

prints:

111, 999

this useful when have long list of optional arguments, want specify few of them, , want specify not first ones.


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