array: A fixed-size array, denoted [T; N], for the element type, T, and the non-negative compile-time constant size, N.bool: The boolean type.char: A character type.f32: The 32-bit floating point type.f64: The 64-bit floating point type.fn: Function pointers, like fn(usize) -> bool.i8: The 8-bit signed integer type.i16: The 16-bit signed integer type.i32: The 32-bit signed integer type.i64: The 64-bit signed integer type.i128: The 128-bit signed integer type.isize: The pointer-sized signed integer type.pointer: Raw, unsafe pointers, *const T, and *mut T.reference: References, both shared and mutable.slice: A dynamically-sized view into a contiguous sequence, [T]. Contiguous here means that elements are laid out so that every element is the same distance from its neighbors.str: String slices.tuple: A finite heterogeneous sequence, (T, U, ..).u8: The 8-bit unsigned integer type.u16: The 16-bit unsigned integer type.u32: The 32-bit unsigned integer type.u64: The 64-bit unsigned integer type.unit: The () type, also called "unit".usize: The pointer-sized unsigned integer type.primitive: This module reexports the primitive types to allow usage that is not possibly shadowed by other declared types.
array: Implementations of things like Eq for fixed-length arrays up to a certain length. Eventually, we should be able to generalize to all lengths.f32: This module provides constants which are specific to the implementation of the f32 floating point data type.f64: This module provides constants which are specific to the implementation of the f64 floating point data type.i8: The 8-bit signed integer type.i16: The 16-bit signed integer type.i32: The 32-bit signed integer type.i64: The 64-bit signed integer type.i128: The 128-bit signed integer type.isize: The pointer-sized signed integer type.num: Additional functionality for numerics.u8: The 8-bit unsigned integer type.u16: The 16-bit unsigned integer type.u32: The 32-bit unsigned integer type.u64: The 64-bit unsigned integer type.u128: The 128-bit unsigned integer type.usize: The pointer-sized unsigned integer type.
error: Traits for working with Errors.panic: Panic support in the standard library.result: Error handling with the Result type.
ascii: Operations on ASCII strings and characters.char: A character type.fmt: Utilities for formatting and printing Strings.str: Unicode string slices.string: A UTF-8 encoded, growable string.
cell: Shareable mutable containers.collections: Collection types.hash: Generic hashing support.iter: Composable external iteration.vec: A contiguous growable array type with heap-allocated contents, written Vec<T>.
alloc: Memory allocation APIsborrow: A module for working with borrowed data.boxed: A pointer type for heap allocation.mem: Basic functions for dealing with memory.pin: Types that pin data to its location in memory.ptr: Manually manage memory through raw pointers.rc: Single-threaded reference-counting pointers. 'Rc' stands for 'Reference Counted'.slice: A dynamically-sized view into a contiguous sequence, [T].
any: This module implements the Any trait, which enables dynamic typing of any 'static type through runtime reflection.clone: The Clone trait for types that cannot be 'implicitly copied'.convert: Traits for conversions between types.default: The Default trait for types which may have meaningful default values.marker: Primitive traits and types representing basic properties of types.ops: Overloadable operators.option: Optional values.
env: Inspection and manipulation of the process's environment.ffi: Utilities related to FFI bindings.fs: Filesystem manipulation operations.io: Traits, helpers, and type definitions for core I/O functionality.net: Networking primitives for TCP/UDP communication.os: OS-specific functionality.path: Cross-platform path manipulation.process: A module for working with processes.time: Temporal quantification.
future: Asynchronous values.sync: Useful synchronization primitives.task: Types and Traits for working with asynchronous tasks.thread: Native threads.
hint: Hints to compiler that affects how code should be emitted or optimized.prelude: The Rust Prelude.
assert: Asserts that a boolean expression is true at runtime.assert_eq: Asserts that two expressions are equal to each other (using PartialEq).assert_ne: Asserts that two expressions are not equal to each other (using PartialEq).dbg: Prints and returns the value of a given expression for quick and dirty debugging.debug_assert: Asserts that a boolean expression is true at runtime.debug_assert_eq: Asserts that two expressions are equal to each other.debug_assert_ne: Asserts that two expressions are not equal to each other.
column: Expands to the column number at which it was invoked.file: Expands to the file name in which it was invoked.include: Parses a file as an expression or an item according to the context.include_bytes: Includes a file as a reference to a byte array.include_str: Includes a utf8-encoded file as a string.module_path: Expands to a string that represents the current module path.
compile_error: Causes compilation to fail with the given error message when encountered.is_x86_feature_detected: A macro to test at runtime whether a CPU feature is available on x86/x86-64 platforms.line: Expands to the line number on which it was invoked.matches: Returns whether the given expression matches any of the given patterns.panic: Panics the current thread.todo: Indicates unfinished code.unimplemented: Indicates unimplemented code by panicking with a message of "not implemented".unreachable: Indicates unreachable code.
cfg: Evaluates boolean combinations of configuration flags at compile-time.env: Inspects an environment variable at compile time.option_env: Optionally inspects an environment variable at compile time.
thread_local: Declare a new thread local storage key of type std::thread::LocalKey.vec: Creates a Vec containing the arguments.
concat: Concatenates literals into a static string slice.eprint: Prints to the standard error.eprintln: Prints to the standard error, with a newline.format: Creates a String using interpolation of runtime expressions.format_args: Constructs parameters for the other string-formatting macros.print: Prints to the standard output.println: Prints to the standard output, with a newline.stringify: Stringifies its arguments.write: Writes formatted data into a buffer.writeln: Write formatted data into a buffer, with a newline appended.