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Diffstat (limited to 'src/doc/rustc-dev-guide')
| -rw-r--r-- | src/doc/rustc-dev-guide/src/appendix/glossary.md | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/doc/rustc-dev-guide/src/appendix/glossary.md b/src/doc/rustc-dev-guide/src/appendix/glossary.md index 0e697aeea73..af099d09a6b 100644 --- a/src/doc/rustc-dev-guide/src/appendix/glossary.md +++ b/src/doc/rustc-dev-guide/src/appendix/glossary.md @@ -54,7 +54,7 @@ rib | a data structure in the name resolver that keeps trac sess | the compiler session, which stores global data used throughout compilation side tables | because the AST and HIR are immutable once created, we often carry extra information about them in the form of hashtables, indexed by the id of a particular node. sigil | like a keyword but composed entirely of non-alphanumeric tokens. For example, `&` is a sigil for references. -placeholder | **NOTE: skolemization is deprecated by placeholder** a way of handling subtyping around "for-all" types (e.g., `for<'a> fn(&'a u32)`) as well as solving higher-ranked trait bounds (e.g., `for<'a> T: Trait<'a>`). See [the chapter on placeholder and universes](../borrow_check/region_inference.html#placeholder) for more details. +placeholder | **NOTE: skolemization is deprecated by placeholder** a way of handling subtyping around "for-all" types (e.g., `for<'a> fn(&'a u32)`) as well as solving higher-ranked trait bounds (e.g., `for<'a> T: Trait<'a>`). See [the chapter on placeholder and universes](../borrow_check/region_inference.html#placeholders-and-universes) for more details. soundness | soundness is a technical term in type theory. Roughly, if a type system is sound, then if a program type-checks, it is type-safe; i.e. I can never (in safe rust) force a value into a variable of the wrong type. (see "completeness"). span | a location in the user's source code, used for error reporting primarily. These are like a file-name/line-number/column tuple on steroids: they carry a start/end point, and also track macro expansions and compiler desugaring. All while being packed into a few bytes (really, it's an index into a table). See the Span datatype for more. substs | the substitutions for a given generic type or item (e.g. the `i32`, `u32` in `HashMap<i32, u32>`) |