14 lines
635 B
Scala
14 lines
635 B
Scala
val src = "Hello"
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// Its actually not a copy but a reference
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// That is not a problem because String is immutable
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// In fact its a feature
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val des = src
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assert(src eq des) // Proves the same reference is used.
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// To make a real copy makes no sense.
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// Actually its hard to make a copy, the compiler is too smart.
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// mkString, toString makes also not a real copy
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val cop = src.mkString.toString
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assert((src eq cop)) // Still no copyed image
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val copy = src.reverse.reverse // Finally double reverse makes a copy
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assert(src == copy && !(src eq copy))// Prove, but it really makes no sense.
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