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Remove section on resources from tutorial; add a todo to cover classes

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Tim Chevalier 2012-06-22 13:11:55 -07:00
parent 588c1eb41f
commit 60a748a1d8
1 changed files with 2 additions and 21 deletions
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doc/tutorial.md
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@ -1377,26 +1377,7 @@ Like vectors, strings are always unique. You can wrap them in a shared
box to share them. Unlike vectors, there is no mutable variant of
strings. They are always immutable.
## Resources
Resources are data types that have a destructor associated with them.
~~~~
# fn close_file_desc(x: int) {}
resource file_desc(fd: int) {
close_file_desc(fd);
}
~~~~
This defines a type `file_desc` and a constructor of the same name,
which takes an integer. The type has an associated destructor procedure,
whose contents are specified by the block. Values of such a type can not
be copied, and when they are destroyed (by going out of scope, or, when
boxed, when their box is cleaned up), their body runs. In the example
above, this would cause the given file descriptor to be closed.
NOTE: We're considering alternative approaches for data types with
destructors. Resources might go away in the future.
NOTE: Section on resources removed. ToDo: document classes and destructors
# Argument passing
@ -1581,7 +1562,7 @@ without any sophistication).
## Kinds
Perhaps surprisingly, the 'copy' (duplicate) operation is not defined
for all Rust types. Resource types (types with destructors) can not be
for all Rust types. Resource types (classes with destructors) cannot be
copied, and neither can any type whose copying would require copying a
resource (such as records or unique boxes containing a resource).