Module tracing_core::stdlib

Re-exports either the Rust std library or core and alloc when std is disabled.

crate::stdlib::... should be used rather than std:: when adding code that will be available with the standard library disabled.

Note that this module is called stdlib rather than std, as Rust 1.34.0 does not permit redefining the name stdlib (although this works on the latest stable Rust).

Modules

• assert_matchesExperimental
  Unstable module containing the unstable assert_matches macro.
• async_iterExperimental
  Composable asynchronous iteration.
• intrinsicsExperimental
  Compiler intrinsics.
• simdExperimental
  Portable SIMD module.
• alloc
  Memory allocation APIs.
• any
  Utilities for dynamic typing or type reflection.
• arch
  SIMD and vendor intrinsics module.
• array
  Utilities for the array primitive type.
• ascii
  Operations on ASCII strings and characters.
• backtrace
  Support for capturing a stack backtrace of an OS thread
• borrow
  A module for working with borrowed data.
• boxed
  The Box<T> type for heap allocation.
• cell
  Shareable mutable containers.
• char
  Utilities for the char primitive type.
• clone
  The Clone trait for types that cannot be ‘implicitly copied’.
• cmp
  Utilities for comparing and ordering values.
• collections
  Collection types.
• convert
  Traits for conversions between types.
• default
  The Default trait for types with a default value.
• 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
  Utilities for formatting and printing Strings.
• fs
  Filesystem manipulation operations.
• future
  Asynchronous basic functionality.
• hash
  Generic hashing support.
• hint
  Hints to compiler that affects how code should be emitted or optimized. Hints may be compile time or runtime.
• 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
  Composable external iteration.
• marker
  Primitive traits and types representing basic properties of types.
• mem
  Basic functions for dealing with memory.
• net
  Networking primitives for TCP/UDP communication.
• num
  Additional functionality for numerics.
• ops
  Overloadable operators.
• option
  Optional values.
• os
  OS-specific functionality.
• panic
  Panic support in the standard library.
• path
  Cross-platform path manipulation.
• pin
  Types that pin data to its 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
  Manually manage memory through raw pointers.
• rc
  Single-threaded reference-counting pointers. ‘Rc’ stands for ‘Reference Counted’.
• result
  Error handling with the Result type.
• slice
  Utilities for the slice primitive type.
• str
  Utilities for the str primitive type.
• string
  A UTF-8–encoded, growable string.
• sync
  Useful synchronization primitives.
• task
  Types and Traits for working with asynchronous tasks.
• thread
  Native threads.
• time
  Temporal quantification.
• u8Deprecation planned
  Redundant constants module for the u8 primitive type.
• u16Deprecation planned
  Redundant constants module for the i16 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
  A contiguous growable array type with heap-allocated contents, written Vec<T>.

Macros

• 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.
• 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 any of the given patterns.
• 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
  Write formatted data into a buffer, with a newline appended.