carbon-language/carbon-lang

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0d1e6bd84d Values, variables, pointers, and references (#2006 )

Introduce a concrete design for how Carbon values, objects, storage,
variables,
and pointers will work. This includes fleshing out the design for:

- The expression categories used in Carbon to represent values and
objects,
how they interact, and terminology that anchors on their expression
nature.
-   An expression category model for readonly, abstract values that can
    efficiently support function inputs.
- A customization system for value expression representations,
especially as
    seen on function boundaries in the calling convention.
- An expression category model for references instead of a type system
model.
-   How patterns match different expression categories.
-   How initialization works in conjunction with function returns.
- Specific pointer syntax, semantics, and library customization
mechanisms.
- A `const` type qualifier for use when the value expression category
system
    is too abstracted from the underlying objects in storage.

---------

Co-authored-by: Geoff Romer <gromer@google.com>
Co-authored-by: josh11b <josh11b@users.noreply.github.com>
Co-authored-by: Adrien Leravat <Pixep@users.noreply.github.com>
Co-authored-by: Jon Ross-Perkins <jperkins@google.com>
Co-authored-by: Richard Smith <richard@metafoo.co.uk>

2023-08-08 07:27:44 +00:00

conditionals.md

some issues in readme-file, replacing orange with apple (#2656 )

2023-03-06 08:43:13 -08:00

loops.md

Flesh out loops docs a little (#729 )

2021-08-12 08:20:46 -07:00

README.md

Start updating control flow design (#544 )

2021-06-01 10:14:18 -07:00

return.md

Values, variables, pointers, and references (#2006 )

2023-08-08 07:27:44 +00:00

README.md

Control flow

Overview

Blocks of statements are generally executed linearly. However, statements are the primary place where this flow of execution can be controlled.

Carbon's flow control statements are:

if and else provides conditional execution of statements.
Loops:
- while executes the loop body for as long as the loop expression returns True.
- for iterates over an object, such as elements in an array.
- break exits loops.
- continue goes to the next iteration of a loop.
return ends the flow of execution within a function, returning it to the caller.