Herrick C++ Library herrick-1.08.zip

This is a C++ library of classes I've built and found useful.  I am creating it by extracting useful classes from programs I have written.  It is painstaking to extract the source and polish them up.  Currently the library is very small, but I have a lot to add.  Some of the source makes heavy use of templates, so you need a pretty modern compiler to get full use of the library.  This library currently contains:

• array_type
  This class template adds an STL vector interface to an array.  The template may be instantiated to use either constructors or initializer lists.  This class is useful for times when the maximum size of the container is known and dynamic allocation is undesirable.
• debug_log
  This singleton class provides a filterable debugging log that may be dynamically enabled or disabled.  The log messages may be routed to various destinations, such as a file.
• nfa
  This class defines a non-deterministic finite automaton, which can be matched against a given set of input.  The NFA can be converted to a DFA (deterministic finite automaton).  The library also defines counting_nfa, which adds counted cycles to an nfa.  Cycles may be defined that loop for exactly N times, at least N times, at most N times, or between N and M times, inclusive.
• pascal_set
  This class mimics as closely as possible the set type of the Pascal Language.  The class works with any integral type, but is meant to be partnered with an enumeration type to be used as the set's element type.  The objects of the class are very compact, storing the set members in one bit per member.  A member class template is provided to generate set constants at compile time.
• range_type
  ranged_type is a class template used to define range and overflow checked integer types. If an attempt is made to construct or assign an out-of-range
  value to a ranged_type, or if an arithmetic operation overflows, a member function is called. The default behavior is to throw an exception.  ranged_type does some static analysis using templates to remove checks that it determines are unnecessary. This reduces that overhead occurred in doing the range and overflow checks.
• regex
  regex is a regular expression class.  It supports a large number of features common to most regular expression implementations.
• time_class
  This singleton class provides a monotonically increasing time source, using the best (known) clock available.  Functions are provided to convert between clock ticks and various units of time.  A "sleep" function is also provided.
• type_traits
  These template classes test, modify, or glean information from types.
• variant_record
  This template class provides a type-safe union.  It may contain any type, including arrays and references.  Classes with constructors may also be used, unlike actual unions.  Accesses are checked to ensure that the type of object being accessed is the same as the actual one that is currently stored in the record.  Unchecked access may also be done.

Current version:  1.08

Any comments or questions, please email me.

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