rclcpp::FixedString< N > Struct Template Reference

#include <fixed_string.hpp>

Public Member Functions
const char *	c_str () const
	Get a pointer to the null-terminated string.
bool	empty () const
	True when the string holds no characters. phase-417 W1.c; ungated.
	FixedString ()
	Default constructor — empty string.
size_t	length () const
	Get the length of the string (up to N-1).
bool	operator!= (const char *s) const
FixedString &	operator= (const char *s)
	Assign from a C string. Truncates if longer than capacity.
bool	operator== (const char *s) const
	Compare with a C string.
size_t	size () const

Static Public Member Functions
static constexpr size_t	capacity ()
	Maximum number of characters (excluding null terminator).

Public Attributes
char	data [N]

Detailed Description

template<size_t N>
struct rclcpp::FixedString< N >

Fixed-capacity null-terminated string.

Wraps a char[N] buffer with safe assignment and query methods. Memory layout is identical to char[N], so the type is C-ABI compatible and can be passed across the runtime boundary by value.

Usage:

rclcpp::FixedString<256> name;
name = "hello world";
printf("%s (len=%zu)\n", name.c_str(), name.length());

Constructor & Destructor Documentation

FixedString()

template<size_t N>

rclcpp::FixedString< N >::FixedString ( )

inline

Default constructor — empty string.

Member Function Documentation

c_str()

template<size_t N>

const char * rclcpp::FixedString< N >::c_str ( ) const

inline

Get a pointer to the null-terminated string.

capacity()

template<size_t N>

constexpr size_t rclcpp::FixedString< N >::capacity ( )

inlinestaticconstexpr

Maximum number of characters (excluding null terminator).

empty()

template<size_t N>

bool rclcpp::FixedString< N >::empty ( ) const

inline

True when the string holds no characters. phase-417 W1.c; ungated.

length()

template<size_t N>

size_t rclcpp::FixedString< N >::length ( ) const

inline

Get the length of the string (up to N-1).

operator!=()

template<size_t N>

bool rclcpp::FixedString< N >::operator!= ( const char * s ) const

inline

operator=()

template<size_t N>

FixedString & rclcpp::FixedString< N >::operator= ( const char * s )

inline

Assign from a C string. Truncates if longer than capacity.

operator==()

template<size_t N>

bool rclcpp::FixedString< N >::operator== ( const char * s ) const

inline

Compare with a C string.

size()

template<size_t N>

size_t rclcpp::FixedString< N >::size ( ) const

inline

Number of characters, excluding the terminator — the std::string spelling of length(). phase-417 W1.c; ungated, no <string> needed.

Member Data Documentation

data

template<size_t N>

char rclcpp::FixedString< N >::data[N]

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The documentation for this struct was generated from the following file:

• include/rclcpp/fixed_string.hpp