Macro stats 

macro_rules! stats {
    ($($t:tt)*) => { ... };
}

Generates stat data types to be used in requests.

These are commonly associated with person_hydrations to create a PersonRequest.

Stat Types & Stat Groups for stats!

Name	Stat Type	Stat Group	Notes
Projected	WithPlayer<_>	HP--	likely ZIPS projections
YearByYear	HashMap<SeasonId, WithSeason<_>>	HPCF	1.
YearByYearAdvanced	HashMap<SeasonId, WithSeason<_>>	HP--	1.
Season	WithSeason<_>	HPCF
Career	Career<_>	HPCF
SeasonAdvanced	WithSeason<_>	HP--
CareerAdvanced	Career<_>	HP--
GameLog	Vec<WithGame<_>>	HPCF
PlayLog	Vec<SingleMatchup<Play<_>>>	HPCF	same format as in games
PitchLog	Vec<SingleMatchup<PitchStat>>	HPCF	same format as in games
ExpectedStatistics	no wrapper	HP--	xAVG, xwOBA`, etc.
Sabermetrics	no wrapper	HP--	xFIP, fWAR`, etc.
VsPlayer5Y	AccumulatedVsPlayerMatchup<_>	HP--	opposing_player in builder
LastXGames	WithTeam<_>	HPCF	games_back in builder
ByDateRange	WithTeam<_>	HPCF	date_range in builder
ByDateRangeAdvanced	WithTeam<_>	HPCF	date_range in builder
ByMonth	HashMap<Month, WithMonth<_>>	HPCF
ByDayOfWeek	HashMap<Weekday, WithWeekday<_>>	HPCF
HomeAndAway	WithHomeAndAway<_>	HPCF
WinLoss	WithWinLoss<_>	HPCF
OpponentsFaced	FieldedMatchup	HPCF
StatSplits	WithSeason<_>	HP--	situations in builder
StatSplitsAdvanced	WithSeason<_>	HP--	situations in builder

Note: HPCF stands for Hitting, Pitching, Catching, and Fielding. StatTypes will be marked as for what StatGroups they support in requests.

Table Footnotes

1. Seasons will display the last entry sent via the API, which is typically a full season with multiple teams, as opposed to the split with one team (ex. if a player is traded at the deadline).

Examples

 mlb_api::stats! {
     pub struct MyStats {
         [Season, Career] = [Hitting, Pitching]
     }
 }

 mlb_api::person_hydrations! {
     pub struct MyStatsHydrations {
         stats: MyStats,
     }
 }

 let response = mlb_api::person::PersonRequest::<MyStatsHydrations>::builder()
     .id(id)
     .hydrations(MyStatsHydrations::builder()
         .stats(MyStats::builder()))
     .build_and_get()
     .await?;

 // for simple requests which don't involve values supplied in the builder (see table above), this also works:
 let response = mlb_api::person::PersonRequest::<MyStatsHydrations>::for_id(id)
     .build_and_get()
     .await?;

 let stats: &MyStats = &response.people[0].extras.stats;