associative?

Returns true if coll implements Associative

chunked-seq?

coll?

Returns true if x implements IPersistentCollection

contains?

Returns true if key is present in the given collection, otherwise returns false. Note that for numerically indexed co...

counted?

Returns true if coll implements count in constant time

distinct?

Returns true if no two of the arguments are =

empty?

Returns true if coll has no items. To check the emptiness of a seq, please use the idiom (seq x) rather than (not (emp...

every?

Returns true if (pred x) is logical true for every x in coll, else false.

indexed?

Return true if coll implements Indexed, indicating efficient lookup by index

list?

Returns true if x implements IPersistentList

map-entry?

Return true if x is a map entry

map?

Return true if x implements IPersistentMap

not-any?

Returns false if (pred x) is logical true for any x in coll, else true.

not-empty

If coll is empty, returns nil, else coll

not-every?

Returns false if (pred x) is logical true for every x in coll, else true.

record?

Returns true if x is a record

reversible?

Returns true if coll implements Reversible

seq?

Return true if x implements ISeq

seqable?

Return true if the seq function is supported for x

sequential?

Returns true if coll implements Sequential

set?

Returns true if x implements IPersistentSet

some

Returns the first logical true value of (pred x) for any x in coll, else nil. One common idiom is to use a set as pre...

sorted?

Returns true if coll implements Sorted

vector?

Return true if x implements IPersistentVector