Change internal table to a set. 100x faster load, faster searches. Fixes

 #245

src/particle/particle/particle.py

@@ -26,6 +26,7 @@
  SupportsInt,
  Union,
  TextIO,
+ Set,
 )
 
 from hepunits.constants import c_light
@@ -229,7 +230,7 @@ def __repr__(self):
  )
 
  # Loaded table of entries
- _table = None # type: Optional[List[Particle]]
+ _table = None # type: Optional[Set[Particle]]
 
  # Names of loaded tables
  _table_names = None # type: Optional[List[str]]
@@ -266,7 +267,7 @@ def table_loaded(cls):
 
  @classmethod
  def all(cls):
- # type: () -> List[Particle]
+ # type: () -> Set[Particle]
  """
  Access, hence get hold of, the internal particle data CSV table,
  loading it from the default location if no table has yet been loaded.
@@ -275,7 +276,7 @@ def all(cls):
  if not cls.table_loaded():
  cls.load_table()
 
- return cls._table if cls._table is not None else []
+ return cls._table if cls._table is not None else set()
 
  @classmethod
  def dump_table(
@@ -380,7 +381,7 @@ def dump_table(
  pass
 
  # Start with the full table
- tbl_all = cls.all()
+ tbl_all = sorted(cls.all())
 
  # Apply a filter, if specified
  if filter_fn is not None:
@@ -429,7 +430,7 @@ def load_table(cls, filename=None, append=False, _name=None):
  if append and not cls.table_loaded():
  cls.load_table(append=False) # default load
  elif not append:
- cls._table = []
+ cls._table = set()
  cls._table_names = []
 
  # Tell MyPy that this is true
@@ -466,7 +467,7 @@ def load_table(cls, filename=None, append=False, _name=None):
  if append and value in cls._table:
  cls._table.remove(value) # type: ignore
 
- cls._table.append(
+ cls._table.add(
  cls(
  pdgid=value,
  mass=float(v["Mass"]),