Namespace: joker.walk

v1.0

Contents

• Summary
• Index
• Constants
• Variables
• Functions, Macros, and Special Forms

Summary

Defines a generic tree walker for Clojure data structures.
Takes any data structure (list, vector, map, set, seq), calls
a function on every element, and uses the return value of the
function in place of the original. This makes it fairly easy
to write recursive search-and-replace functions, as shown in
the examples.

Note: "walk" supports all Clojure data structures EXCEPT maps
created with sorted-map-by. There is no (obvious) way to retrieve
the sorting function.

Index

• keywordize-keys
• macroexpand-all
• postwalk
• postwalk-demo
• postwalk-replace
• prewalk
• prewalk-demo
• prewalk-replace
• stringify-keys
• walk

Constants

Constants are variables with :const true in their metadata. Joker currently does not recognize them as special; as such, it allows redefining them or their values.

(None.)

Variables

(None.)

Functions, Macros, and Special Forms

• keywordize-keys

  Function v1.0

  (keywordize-keys m)
  

  Recursively transforms all map keys from strings to keywords.

  source

• macroexpand-all

  Function v1.0

  (macroexpand-all form)
  

  Recursively performs all possible macroexpansions in form.

  source

• postwalk

  Function v1.0

  (postwalk f form)
  

  Performs a depth-first, post-order traversal of form. Calls f on
  each sub-form, uses f's return value in place of the original.
  Recognizes all Clojure data structures. Consumes seqs as with doall.

  source

• postwalk-demo

  Function v1.0

  (postwalk-demo form)
  

  Demonstrates the behavior of postwalk by printing each form as it is
  walked. Returns form.

  source

• postwalk-replace

  Function v1.0

  (postwalk-replace smap form)
  

  Recursively transforms form by replacing keys in smap with their
  values. Like clojure/replace but works on any data structure. Does
  replacement at the leaves of the tree first.

  source

• prewalk

  Function v1.0

  (prewalk f form)
  

  Like postwalk, but does pre-order traversal.

  source

• prewalk-demo

  Function v1.0

  (prewalk-demo form)
  

  Demonstrates the behavior of prewalk by printing each form as it is
  walked. Returns form.

  source

• prewalk-replace

  Function v1.0

  (prewalk-replace smap form)
  

  Recursively transforms form by replacing keys in smap with their
  values. Like clojure/replace but works on any data structure. Does
  replacement at the root of the tree first.

  source

• stringify-keys

  Function v1.0

  (stringify-keys m)
  

  Recursively transforms all map keys from keywords to strings.

  source

• walk

  Function v1.0

  (walk inner outer form)
  

  Traverses form, an arbitrary data structure. inner and outer are
  functions. Applies inner to each element of form, building up a
  data structure of the same type, then applies outer to the result.
  Recognizes all Clojure data structures. Consumes seqs as with doall.

  source