Suchwow 6.0.0 API documentation

any? provides shorthand for “containment” queries that otherwise require different functions. Behavior depends on the type of predlike.

• A function: true iff predlike returns a truthy value for any value in coll.

   (any? even? [1 2 3]) => true           ; works best with boolean-valued functions
   (any? inc [1 2 3]) => true             ; a silly example to demo truthiness.
   (any? identity [nil false]) => false   ; also silly
  

• A collection: true iff predlike contains any element of coll.

   (any? #{1 3} [5 4 1]) => true
   (any? [1 3] [5 4 1]) => true
  

  When predlike is a map, it checks key/value pairs:

   (any? {:a 1} {:a 1}) => true
   (any? {:a 1} {:a 2}) => false
   (any? {:a 2, :b 1} {:b 1, :c 3}) => true
  

• A keyword: true iff predlike is a key in coll, which must be a map.

   (any? :a {:a 1, :b 2}) => true         ; equivalent to:
   (contains? {:a 1, :b 2} :a) => true
  

Returns the first item of coll where (pred item) returns a truthy value, nil otherwise. coll is evaluated lazily.

 (find-first even? [1 2 3]) => 2

You can apply find-first to a map, even though which element matches “first” is undefined. Note that the item passed to pred will be a key-value pair:

 (find-first #(even? (second %)) {:a 2, :b 22, :c 222}) => [:c 222]

Returns the fourth element of coll. Returns nil if there are fewer than four elements.

Returns true if value has any values, false otherwise. value must be a collection, a String, a native Java array, or something that implements the Iterable interface.

The retform is evaluated, followed by the body. The value of the form is returned, so the point of body should be to have side-effects.

(defn pop! [k]
   (prog1 (top k)
     (alter! k clojure.core/pop)))

The name is a homage to older Lisps.

Returns the third element of coll. Returns nil if there are fewer than three elements.

A lazy sequence of non-nil values of coll.