Construct from string_view The object to construct from Equality operator true if the objects are equal, false otherwise The left operand The right operand Inequality operator true if the objects are not equal, false otherwise The left operand The right operand Default constructor Copy constructor The object to copy construct from Move constructor The object to move construct from Destructor Move assignment operator Reference to the current object The object to move assign from Construct from string_view The object to construct from Copy constructor The object to copy construct from Move constructor The object to move construct from Constructs a context object. References to the arguments are stored in the object so make sure they have appropriate lifetimes. The object to construct from Default constructor Construct from unsigned int The value to construct from Conversion to unsigned int The object converted to unsigned int An error reported from a formatting function. A fast integer formatter. Construct from int The value to construct from Construct from unsigned int The value to construct from Construct from long The value to construct from Construct from unsigned long The value to construct from Construct from long long The value to construct from Construct from unsigned long long The value to construct from Returns a pointer to the output buffer content with terminating null character appended. Returns a pointer to the output buffer content. No terminating null character is appended. Returns the number of characters written to the output buffer. the number of characters written to the output buffer. Returns the content of the output buffer as an std::string . the content of the output buffer as an std::string . Default constructor Conversion to char The object converted to char Pointer to just after the last successful write in the array. Specifies if the output was truncated. Default constructor Conversion to bool The object converted to bool Default constructor Default constructor Construct from unsigned int The value to construct from Conversion to unsigned int The object converted to unsigned int Default constructor Construct from color The object to construct from Construct from uint32_t The object to construct from Default constructor Conversion to writer The object converted to writer A text style consisting of foreground and background colors and emphasis. format operator| print Construct from emphasis The object to construct from Bitwise disjunction assignment operator Reference to the current object The right operand Equality operator true if the objects are equal, false otherwise The right operand Inequality operator true if the objects are not equal, false otherwise The right operand Default constructor Construct from unsigned int The value to construct from Construct from buffer The object to copy construct from Construct from FILE The object to construct from Default constructor Construct from int The value to construct from Conversion to int The object converted to int Default constructor operator| Creates a text style from the background color. A text style consisting of foreground and background colors and emphasis. Creates a text style from the foreground (text) color. A text style consisting of foreground and background colors and emphasis. Formats an error message for an error returned by an operating system or a language runtime, for example a file opening error, and writes it to out . The format is the same as the one used by std::system_error(ec, message) where ec is std::error_code(error_code, std::generic_category()) . It is implementation-defined but normally looks like: <message>: <system-message> where <message> is the passed message and <system-message> is the system message corresponding to the error code. error_code is a system error code as given by errno . A contiguous memory buffer with an optional growing ability. It is an internal class and shouldn't be used directly, only via memory_buffer . Converts given time since epoch as std::time_t value into calendar time, expressed in Coordinated Universal Time (UTC). Unlike std::gmtime , this function is thread-safe on most platforms. Bitwise disjunction operator A text style consisting of foreground and background colors and emphasis. The left operand The right operand emphasis text_style Bitwise disjunction operator A text style consisting of foreground and background colors and emphasis. The left operand The right operand Reports a format error at compile time or, via a format_error exception, at runtime. Creates a runtime format string. Example : // Check format string at runtime instead of compile-time. fmt::print(fmt::runtime("{:d}"), "I am not a number"); runtime_format_string Equality operator true if the objects are equal, false otherwise The left operand The right operand Inequality operator true if the objects are not equal, false otherwise The left operand The right operand Less-than operator true if the left object is less than the right object, false otherwise The left operand The right operand Less-than-or-equal operator true if the left object is less than or equal to the right object, false otherwise The left operand The right operand Greater-than operator true if the left object is greater than the right object, false otherwise The left operand The right operand Greater-than-or-equal operator true if the left object is greater than or equal to the right object, false otherwise The left operand The right operand