clojure map keys

Eric Normand IN/Clojure 2019 I can't remember what keys belong in this map string/upper-case)) crews)))) missions) maps update anonymous functions 

sortable keys, storing deltas in the data structure itself Clojure Hash Maps tree of nodes Node internals :foo 3 5 :bar nil metadata Key :foo Key 3 

key val Sorted maps rseq subseq rsubseq Queues (conj at end, peek pop from beginning) Create clojure lang PersistentQueue/EMPTY (no literal syntax or  

22 jui 2013 · Clojure (actually) implemented as a Java library Clojure JAR downloads - keys ▻ Whereas Java allows mutable objects in sets or map

get contains? find keys vals map? Entry: key val StructMaps Setup: create-struct defstruct accessor Individual: struct-map struct ArrayMaps Create: array-map

namespace map literal syntax allows you to qualify all the keys of a map by a single namespace succinctly For example: (clojure spec/def ::name string?) ( clojure

They are commonly used as keys in maps and may be used as a function that given a map returns the value held under itself in that map (:k {:k 5}) ; => 5 A Java 

Instead, Typed Clojure provides a flexible heterogenous map type, in which key type system ideas,2 before studying the core features in detail in Section 3

{:my-key "this is my value"} □ Note Clojure maps have a 1:1 mapping to JSOn We use the get function to retrieve a value for a specified key, as seen in Listing