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The tutorial should mention the ++ arg passing style #1407

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Jan 1, 2012
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The tutorial should mention the ++ arg passing style #1407

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3 changes: 3 additions & 0 deletions doc/tutorial/args.md
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Expand Up @@ -104,6 +104,9 @@ Another style is by-move, which will cause the argument to become
de-initialized on the caller side, and give ownership of it to the
called function. This is written `-`.

Sometimes you need to pass a structural type by value, such as when
interfacing with external native functions. This is written `++`.

Finally, the default passing styles (by-value for non-structural
types, by-reference for structural ones) are written `+` for by-value
and `&&` for by(-immutable)-reference. It is sometimes necessary to
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