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Fixed doc regarding Drop and static 

Types implementing `Drop` are allowed in `static` and `const` definitions since
rust 1.22.0.
This commit is contained in:
Stephane Raux 2018-01-28 18:59:55 -08:00
parent df18aec936
commit ebf3dc334a
1 changed files with 9 additions and 4 deletions
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13
first-edition/src/const-and-static.md
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@ -64,10 +64,7 @@ unsafe {
[unsafe]: unsafe.html
Furthermore, any type stored in a `static` must be `Sync`, and must not have
a [`Drop`][drop] implementation.
[drop]: drop.html
Furthermore, any type stored in a `static` must be `Sync`.
# Initializing
@ -75,6 +72,14 @@ Both `const` and `static` have requirements for giving them a value. They must
be given a value that’s a constant expression. In other words, you cannot use
the result of a function call or anything similarly complex or at runtime.
# Dropping
Types implementing [`Drop`][drop] are allowed in `const` and `static`
definitions. Constants are inlined where they are used and are dropped
accordingly. `static` values are not dropped.
[drop]: drop.html
# Which construct should I use?
Almost always, if you can choose between the two, choose `const`. It’s pretty