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Making wrong code Illegal
I just read Joel's "Making Wrong Code Look Wrong" and I'm really not impressed. Joel discusses using Hungarian notation to make code look wrong. Why bother? Anyone can see this so called solution isn't bulletproof and mistakes can very easily slip through the cracks. Why not use the type safety offered by modern languages and create types that behave properly?
That is, in the example "Request("name")" would return an UnsafeString, and UnsafeString is not convertible to a safe String, except by calling Encode. By using the type safety offered in modern languages, preventing assignment like sName = us can be prevented by the compiler, not just by hoping the programmer notices the error.
Thursday, November 17, 2005
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