static SIPrefix()
{
_instances = new List <SIPrefix>
{
(_prefix_yocto = new SIPrefix("yocto", "y", -24)),
(_prefix_zepto = new SIPrefix("zepto", "z", -21)),
(_prefix_atto = new SIPrefix("atto", "a", -18)),
(_prefix_femto = new SIPrefix("femto", "f", -15)),
(_prefix_pico = new SIPrefix("pico", "p", -12)),
(_prefix_nano = new SIPrefix("nano", "n", -9)),
(_prefix_micro = new SIPrefix("micro", "µ", -6)),
(_prefix_milli = new SIPrefix("milli", "m", -3)),
(_prefix_centi = new SIPrefix("centi", "c", -2)),
(_prefix_deci = new SIPrefix("deci", "d", -1)),
(_prefix_none = new SIPrefix("", "", 0)),
(_prefix_deca = new SIPrefix("deca", "da", 1)),
(_prefix_hecto = new SIPrefix("hecto", "h", 2)),
(_prefix_kilo = new SIPrefix("kilo", "k", 3)),
(_prefix_mega = new SIPrefix("mega", "M", 6)),
(_prefix_giga = new SIPrefix("giga", "G", 9)),
(_prefix_tera = new SIPrefix("tera", "T", 12)),
(_prefix_peta = new SIPrefix("peta", "P", 15)),
(_prefix_exa = new SIPrefix("exa", "E", 18)),
(_prefix_zetta = new SIPrefix("zetta", "Z", 21)),
(_prefix_yotta = new SIPrefix("yotta", "Y", 24))
};
_nonePrefixList = new SIPrefixList(new SIPrefix[] { _prefix_none });
_allPrefixes = new SIPrefixList(_instances);
_multipleOf3Prefixes = new SIPrefixList(new SIPrefix[] {
_prefix_yocto,
_prefix_zepto,
_prefix_atto,
_prefix_femto,
_prefix_pico,
_prefix_nano,
_prefix_micro,
_prefix_milli,
_prefix_none,
_prefix_kilo,
_prefix_mega,
_prefix_giga,
_prefix_tera,
_prefix_peta,
_prefix_exa,
_prefix_zetta,
_prefix_yotta
});
_prefixByExponent = new Dictionary <int, SIPrefix>();
foreach (var prefix in _instances)
{
_prefixByExponent.Add(prefix.Exponent, prefix);
}
}
public UnitWithLimitedPrefixes(IUnit unit, IEnumerable <SIPrefix> allowedPrefixes)
{
if (null == unit)
{
throw new ArgumentNullException(nameof(unit));
}
_unit = unit;
if (null != allowedPrefixes)
{
var l = new HashSet <SIPrefix>(_unit.Prefixes);
l.IntersectWith(allowedPrefixes);
_prefixes = new SIPrefixList(l);
}
}