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Makes FFI-MEM-WRAPPING example a bit more Rusty #56

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Makes FFI-MEM-WRAPPING example a bit more Rusty #56

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ebea5e5
Makes FFI-MEM-WRAPPING example a bit more Rusty
Voronar Jan 26, 2022
850c4fb
Update src/en/07_ffi.md
Voronar Jan 26, 2022
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9 changes: 3 additions & 6 deletions src/en/07_ffi.md
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Original file line number Diff line number Diff line change
Expand Up @@ -623,12 +623,9 @@ pub struct Foo(*mut RawFoo);
impl Foo {
/// Create a Foo
pub fn new() -> Option<Foo> {
let raw_ptr = unsafe { foo_create() };
if raw_ptr.is_null() {
None
} else {
Some(Foo(raw_ptr))
}
// The `?` operator here ensures `None` is returned on `NULL`.
let raw_ptr = unsafe { foo_create().as_mut()? };
Some(Foo(raw_ptr))
}
#
/// Do something on a Foo
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