How does ReferenceEquals fuction work?

[Holbox]

Hi people,


look at this (console project)

sub main
dim a as string = "Hola"
dim b as string = "Hola"
dim c as string = new string("Hola")
dim d as string = new string("Hola")

// this will return "TRUE"
system.console. writeline("equa ls?:" & referenceequals (a,b))

// this will return "FALSE"
system.console. writeline("equa ls?:" & referenceequals (c,d))

system.console. readline()
end sub

Why?

Thx

[Jon Skeet [C# MVP]]

Re: How does ReferenceEquals fuction work?

Holbox <informacion@ya .com> wrote:[color=blue]
> look at this (console project)
>
> sub main
> dim a as string = "Hola"
> dim b as string = "Hola"
> dim c as string = new string("Hola")
> dim d as string = new string("Hola")
>
> // this will return "TRUE"
> system.console. writeline("equa ls?:" & referenceequals (a,b))
>
> // this will return "FALSE"
> system.console. writeline("equa ls?:" & referenceequals (c,d))
>
> system.console. readline()
> end sub
>
> Why?[/color]

Because c and d are references to two different string objects, whereas
a and b are references to the same string object.

--
Jon Skeet - <skeet@pobox.co m>

http://www.pobox.com/~skeet

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