Function mostSignificant
get the first nr of parts (or less if not enough parts are available).
Example
example for a time unit definition
import unit_threaded;
auto res = TIME .transform(1 + 2 * 1000 + 3 * 1000 * 60 + 4 * 1000 * 60 * 60
+ 5 * 1000 * 60 * 60 * 24);
res .length .shouldEqual(5);
res[0] .name .shouldEqual("d");
res[0] .value .shouldEqual(5);
res[1] .name .shouldEqual("h");
res[1] .value .shouldEqual(4);
res[2] .name .shouldEqual("m");
res[2] .value .shouldEqual(3);
res[3] .name .shouldEqual("s");
res[3] .value .shouldEqual(2);
res[4] .name .shouldEqual("ms");
res[4] .value .shouldEqual(1);
res = TIME .transform(2001) .onlyRelevant;
res .length .shouldEqual(2);
res[0] .name .shouldEqual("s");
res[0] .value .shouldEqual(2);
res[1] .name .shouldEqual("ms");
res[1] .value .shouldEqual(1);
res = TIME .transform(2001) .onlyRelevant .mostSignificant(1);
res .length .shouldEqual(1);
res[0] .name .shouldEqual("s");
res[0] .value .shouldEqual(2);