Counter

Represents a set of counters for trailing (following) tokens in a markov state.

struct Counter (

T

) {

this(T follow);

bool contains(T follow);

bool empty [@property getter];

uint get(T follow);

T[] keys [@property getter];

size_t length [@property getter];

uint peek(T follow);

void poke(T follow);

T random [@property getter];

Nullable!(Unqual!T) random [@property getter];

void rehash [@property getter];

T select [@property getter];

Nullable!(Unqual!T) select [@property getter];

void set(T follow, uint count);

uint total [@property getter];

}

Constructors

this this(T follow): Constructs a counter table with an initial token.

Members

Functions

contains bool contains(T follow): Checks if the counter table contains a given token.
get uint get(T follow): Returns the counter value for a token.
peek uint peek(T follow): Returns the counter value for a token. If the token doesn't exist, 0 is returned.
poke void poke(T follow): Pokes a token in the counter table, incrementing its counter value. If the token doesn't exist, it's created and assigned a counter of 1.
set void set(T follow, uint count): Sets the counter value for a given token.

Properties

empty bool empty [@property getter]: Checks if the counter table is empty.
keys T[] keys [@property getter]: Returns a list of tokens in the counter table.
length size_t length [@property getter]: Returns the length of the counter table.
random T random [@property getter]
Nullable!(Unqual!T) random [@property getter]: Returns a random token with equal distribution. If the counter table is emtpy, null is returned instead.
rehash void rehash [@property getter]: Rebuilds the associative arrays used by the counter table.
select T select [@property getter]
Nullable!(Unqual!T) select [@property getter]: Returns a random token, distributed based on the counter values. Specifically, a token with a higher counter is more likely to be chosen than a token with a counter lower than it. If the counter table is empty, null is returned instead.
total uint total [@property getter]: Returns the sum of all counters on all tokens. The value is cached once it's been computed.

Meta

Source

See Implementation

markov counter structs

Counter