Module std
Source - alloc
- Memory allocation APIs.
- any
- Utilities for dynamic typing or type reflection.
- arch
- SIMD and vendor intrinsics module.
- array
- ascii
- Operations on ASCII strings and characters.
- backtrace
- Support for capturing a stack backtrace of an OS thread
- borrow
- boxed
- cell
- Shareable mutable containers.
- char
- clone
- cmp
- collections
- convert
- Traits for conversions between types.
- default
- deque
- env
- Inspection and manipulation of the process’s environment.
- error
- Interfaces for working with Errors.
- f32
- Constants for the
f32 single-precision floating point type. - f64
- Constants for the
f64 double-precision floating point type. - ffi
- Utilities related to FFI bindings.
- fmt
- fs
- Filesystem manipulation operations.
- future
- Asynchronous basic functionality.
- hash
- Generic hashing support.
- hint
- i8Deprecation planned
- Redundant constants module for the
i8 primitive type. - i16Deprecation planned
- Redundant constants module for the
i16 primitive type. - i32Deprecation planned
- Redundant constants module for the
i32 primitive type. - i64Deprecation planned
- Redundant constants module for the
i64 primitive type. - i128Deprecation planned
- Redundant constants module for the
i128 primitive type. - io
- Traits, helpers, and type definitions for core I/O functionality.
- isizeDeprecation planned
- Redundant constants module for the
isize primitive type. - iter
- marker
- Primitive traits and types representing basic properties of types.
- mem
- net
- Networking primitives for TCP/UDP communication.
- num
- ops
- option
- os
- OS-specific functionality.
- panic
- Panic support in the standard library.
- panicking
- path
- Cross-platform path manipulation.
- pin
- Types that pin data to a location in memory.
- prelude
- The Rust Prelude
- primitive
- This module reexports the primitive types to allow usage that is not
possibly shadowed by other declared types.
- process
- A module for working with processes.
- ptr
- rc
- result
- slice
- str
- Utilities for the
str primitive type. - string
- sync
- task
- Types and Traits for working with asynchronous tasks.
- thread
- Native threads.
- time
- u8Deprecation planned
- Redundant constants module for the
u8 primitive type. - u16Deprecation planned
- Redundant constants module for the
u16 primitive type. - u32Deprecation planned
- Redundant constants module for the
u32 primitive type. - u64Deprecation planned
- Redundant constants module for the
u64 primitive type. - u128Deprecation planned
- Redundant constants module for the
u128 primitive type. - usizeDeprecation planned
- Redundant constants module for the
usize primitive type. - vec
- assert_matchesExperimental
- Unstable module containing the unstable
assert_matches macro. - async_iterExperimental
- Composable asynchronous iteration.
- autodiffExperimental
- This module provides support for automatic differentiation.
- bstrExperimental
- The
ByteStr and ByteString types and trait implementations. - f16Experimental
- Constants for the
f16 double-precision floating point type. - f128Experimental
- Constants for the
f128 double-precision floating point type. - intrinsicsExperimental
- Compiler intrinsics.
- patExperimental
- Helper module for exporting the
pattern_type macro - randomExperimental
- Random value generation.
- simdExperimental
- Portable SIMD module.
- unsafe_binderExperimental
- Operators used to turn types into unsafe binders and back.
- 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). - cfg
- Evaluates boolean combinations of configuration flags at compile-time.
- column
- Expands to the column number at which it was invoked.
- compile_error
- Causes compilation to fail with the given error message when encountered.
- concat
- Concatenates literals into a static string slice.
- 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.
- env
- Inspects an environment variable at compile time.
- eprint
- Prints to the standard error.
- eprintln
- Prints to the standard error, with a newline.
- file
- Expands to the file name in which it was invoked.
- format
- Creates a
String using interpolation of runtime expressions. - format_args
- Constructs parameters for the other string-formatting macros.
- 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 UTF-8 encoded file as a string.
- is_x86_feature_detectedx86 or x86-64
- 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 the provided pattern.
- module_path
- Expands to a string that represents the current module path.
- option_env
- Optionally inspects an environment variable at compile time.
- panic
- Panics the current thread.
- print
- Prints to the standard output.
- println
- Prints to the standard output, with a newline.
- stringify
- Stringifies its arguments.
- thread_local
- Declare a new thread local storage key of type
std::thread::LocalKey. - todo
- Indicates unfinished code.
- tryDeprecated
- Unwraps a result or propagates its error.
- unimplemented
- Indicates unimplemented code by panicking with a message of “not implemented”.
- unreachable
- Indicates unreachable code.
- vec
- Creates a
Vec containing the arguments. - write
- Writes formatted data into a buffer.
- writeln
- Writes formatted data into a buffer, with a newline appended.
- cfg_matchExperimental
- A macro for defining
#[cfg] match-like statements. - concat_bytesExperimental
- Concatenates literals into a byte slice.
- concat_identsExperimental
- Concatenates identifiers into one identifier.
- const_format_argsExperimental
- Same as
format_args, but can be used in some const contexts. - format_args_nlExperimental
- Same as
format_args, but adds a newline in the end. - log_syntaxExperimental
- Prints passed tokens into the standard output.
- trace_macrosExperimental
- Enables or disables tracing functionality used for debugging other macros.