Classes
class	flow::util::Null_interface
	An empty interface, consisting of nothing but a default `virtual` destructor, intended as a boiler-plate-reducing base for any other (presumably `virtual`-method-having) class that would otherwise require a default `virtual` destructor. More...

class	flow::util::Scoped_setter< Value >
	A simple RAII-pattern class template that, at construction, sets the specified location in memory to a specified value, memorizing the previous contents; and at destruction restores the value. More...

Namespaces
namespace	flow
	Catch-all namespace for the Flow project: A collection of various production-quality modules written in modern C++17, originally by ygoldfel.

namespace	flow::util
	Flow module containing miscellaneous general-use facilities that don't fit into any other Flow module.

Functions
template<typename Time_unit , typename N_items >
double	flow::util::to_mbit_per_sec (N_items items_per_time, size_t bits_per_item=8)
	Utility that converts a bandwidth in arbitrary units in both numerator and denominator to the same bandwidth in megabits per second. More...

template<typename Integer >
Integer	flow::util::ceil_div (Integer dividend, Integer divisor)
	Returns the result of the given non-negative integer divided by a positive integer, rounded up to the nearest integer. More...

template<typename T >
bool	flow::util::in_closed_range (T const &min_val, T const &val, T const &max_val)
	Returns `true` if and only if the given value is within the given range, inclusive. More...

template<typename T >
bool	flow::util::in_open_closed_range (T const &min_val, T const &val, T const &max_val)
	Returns `true` if and only if the given value is within the given range, given as a (low, high] pair. More...

template<typename T >
bool	flow::util::in_closed_open_range (T const &min_val, T const &val, T const &max_val)
	Returns `true` if and only if the given value is within the given range, given as a [low, high) pair. More...

template<typename T >
bool	flow::util::in_open_open_range (T const &min_val, T const &val, T const &max_val)
	Returns `true` if and only if the given value is within the given range, given as a (low, high) pair. More...

template<typename Container >
bool	flow::util::key_exists (const Container &container, const typename Container::key_type &key)
	Returns `true` if and only if the given key is present at least once in the given associative container. More...

template<typename Cleanup_func >
Auto_cleanup	flow::util::setup_auto_cleanup (const Cleanup_func &func)
	Provides a way to execute arbitrary (cleanup) code at the exit of the current block. More...

template<typename Minuend , typename Subtrahend >
bool	flow::util::subtract_with_floor (Minuend *minuend, const Subtrahend &subtrahend, const Minuend &floor=0)
	Performs `*minuend -= subtrahend`, subject to a floor of `floor`. More...

template<typename From , typename To >
size_t	flow::util::size_unit_convert (From num_froms)
	Answers the question what's the smallest integer number of `To`s sufficient to verbatim store the given number of `From`s?, where `From` and `To` are POD types. More...

template<typename T1 , typename ... T_rest>
void	flow::util::feed_args_to_ostream (std::ostream *os, T1 const &ostream_arg1, T_rest const &... remaining_ostream_args)
	"Induction step" version of variadic function template that simply outputs arguments 2+ via `<<` to the given `ostream`, in the order given. More...

template<typename T >
void	flow::util::feed_args_to_ostream (std::ostream *os, T const &only_ostream_arg)
	"Induction base" for a variadic function template, this simply outputs given item to given `ostream` via `<<`. More...

template<typename ... T>
void	flow::util::ostream_op_to_string (std::string *target_str, T const &... ostream_args)
	Writes to the specified string, as if the given arguments were each passed, via `<<` in sequence, to an `ostringstream`, and then the result were appended to the aforementioned string variable. More...

template<typename ... T>
std::string	flow::util::ostream_op_string (T const &... ostream_args)
	Equivalent to ostream_op_to_string() but returns a new `string` by value instead of writing to the caller's `string`. More...

template<typename Map , typename Sequence >
void	flow::util::sequence_to_inverted_lookup_map (Sequence const &src_seq, Map *target_map, const Function< typename Map::mapped_type(size_t)> &idx_to_map_val_func)
	Similar to the 2-arg overload of sequence_to_inverted_lookup_map() but with the ability to store a value based on the index into the input sequence instead of that index itself. More...

template<typename Map , typename Sequence >
void	flow::util::sequence_to_inverted_lookup_map (Sequence const &src_seq, Map *target_map)
	Given a generic sequence (integer -> object) generates a generic map (object -> integer) providing inverse lookup. More...

template<typename Const_buffer_sequence >
std::ostream &	flow::util::buffers_to_ostream (std::ostream &os, const Const_buffer_sequence &data, const std::string &indentation, size_t bytes_per_line=0)
	Writes a multi- or single-line string representation of the provided binary data to an output stream, complete with a printable and hex versions of each byte. More...

template<typename Const_buffer_sequence >
std::string	flow::util::buffers_dump_string (const Const_buffer_sequence &data, const std::string &indentation, size_t bytes_per_line=0)
	Identical to buffers_to_ostream() but returns an `std::string` instead of writing to a given `ostream`. More...

template<typename Enum >
Enum	flow::util::istream_to_enum (std::istream *is_ptr, Enum enum_default, Enum enum_sentinel, bool accept_num_encoding=true, bool case_sensitive=false, Enum enum_lowest=Enum(0))
	Deserializes an `enum class` value from a standard input stream. More...

Classes

Namespaces

Functions