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New Message on BDOTNET
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From: rags_rao
Message 4 in Discussion
oops! made a mistake there. strings r referece types and not value types (and nobody
corrected me?). sting s = "something"; modify(s) consolewrite(s); // o/p something
modify(string s) { s = "something else"; } this happens becoz string r immutable
(i dont want u xpln what immutable is check msdn or java docs - concepts r same there
too) so when s is modified a new insatance is created and the refererce (&) is
assigned to s. ofcourse when fn returns value of s is lost (stack is poped) but the s
in calling fn still points to old reference. so writeline outputs something for
those who dont know how strings work this will be confusing (it will be even after u
do - like it did to me and also because i have given such a lousy explaination)
ok......... i can do better play arround with
string.equals(),object.equals(),object.referenceequals() x= "xxx"; y= "xxx"; w=x; u
will see that all 3 point to same memory location x="yyy"; now both y,w have same
refernce (inspite of w=x) and x point to a new location that has string "yyy" i
believe if u have another string with value "yyy", nomatter where it is declared (as
long as its in same appln domain) it will contain same refernce as x
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