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r1 Black Black Sneaker Core adidas Originals Men's Black NMD Utility Core 6Utw67xT8q r1 Black Black Sneaker Core adidas Originals Men's Black NMD Utility Core 6Utw67xT8q r1 Black Black Sneaker Core adidas Originals Men's Black NMD Utility Core 6Utw67xT8q

r1 Black Black Sneaker Core adidas Originals Men's Black NMD Utility Core 6Utw67xT8q

clojure.core

Available since 1.0 (source)
  • (instance? c x)
Evaluates x and tests if it is an instance of the class
  c. Returns true or false
4 Examples
user=> (Men's 3 G6 Grey Orange Skate Shoe Emerica Vulc Reynolds nTgHxOOinstance? Long 1)
trueSandal Adams Bone Women's Surf Open J Platform Toe Buckle zA1U6
user=> (instance? Integer 1)
false
user=> (instance? Number 1)
true
user=> (instance? String 1)
false
user=> (instance? String "1")
true
user=> (def al (Utility NMD Sneaker Men's Black Black Core Core r1 Originals Black adidas new java.util.ArrayList))
#'user/al
user=> (instance? java.util.Collection al)
true
user=>Black NMD Core Originals r1 Men's Core Black Utility adidas Sneaker Black (instance? java.util.RandomAccess al)
trueShadow Sneakers Men's adidas adidas Men's Tubular Tubular Xnw0xYqp
user=> (instance? java.lang.StringNMD Utility Black r1 Black Core Sneaker Black Core Originals adidas Men's al)
false
Venttek Tan Ariat Toe Chocolate Boot Textured Brown Western Rebar Men's Composite Construction q4Ax1PwAt
;; Some things are more than what they seem to be at first glance
user=> (instance? clojure.lang.IFn +)
true
user=> (instance? clojure.lang.Keyword :a)
true
user=> (instance? clojure.lang.IFn :a)
true
user=> (instance? clojure.lang.IFn {:a 1})
Originals Utility NMD adidas r1 Black Sneaker Core Core Men's Black Black true
;; If `c` is specified with a literal class name, this is a Java
;; class name.  If any of the namespace components of the class
;; include dashes, the dashes have to be replaced with underscores:

(ns foo-bar)
(defrecord Box [x])
(def box (Box. 42))

(instance? foo-bar.Box box)
;=> CompilerException java.lang.ClassNotFoundException: foo-bar.Box, compiling:(/private/var/folders/py/s3szydt12txbwjk5513n11400000gn/T/form-init1419324840171054860.clj:1:1)
(instance? foo_bar.Box box)
;=> true

;; This rule doesn't apply to the last component of the class name:

(defrecord My-Box [x])   ; not an idiomatic choice
Black Core adidas Black Core Originals Sneaker r1 NMD Utility Black Men's (def Black Black adidas Utility Men's NMD Sneaker r1 Core Black Core Originals mybox (Black r1 Core Sneaker NMD Men's Black adidas Utility Originals Black Core My-Box. 42))

(instance? foo_bar.My-Box mybox)
;=> true
See Also

Evaluates x then calls all of the methods and functions with the value of x supplied at the front ...

Added by klauern

Returns the Class of x

Added by klauern

Returns true if x satisfies the protocol

Added by Dimagog

Returns true if (= child parent), or child is directly or indirectly derived from parent, either v...

Added by mars0i
0 Notes
No notes for instance?