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GlobalVariable :: exist - Does global variable exist

The function returns, whether a global variable with the name passed in sGlobalVariable exists or not. The function returns true , when the variable could be located and false otherwise.

In order to avoid exceptions, the function might be called before calling remove() or create() .

// fragment

  GlobalVariable  userName("userName");

  if ( !userName.exist() )

    userName.create(Value(""));

  userName.value() = "Paul";

Return value:  Success ( bool  )

The value is true when the function was executed successfully. Otherwise the value is set to false .

Implementation details

bool GlobalVariable  :: exist (  )