There are two main problems with lvalue subroutines:
- It is impossible to validate the assigned value.
You cannot inspect the value before the assignment as it isn't accessible.
You cannot check the value after the assignment but before returning, because the lvalue that receives the assignment must be the last thing in the subroutine before it returns.
- The lvalue that receives the assignment must be the last thing in the subroutine.
Even without considering the first problem above, you often would like to be able to do other things before returning.
With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
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