# Subject Index - English

## A

- **Agents** - [11.3](en/01-fundamentals.md#113-agents)
- **Aliasing namespaces** - [9.3](en/01-fundamentals.md#93-referring-and-importing)
- **Allocation (memory)** - [8.2](en/02-advanced.md#82-transient-data-structures)
- **Anonymous functions** - [5.2](en/01-fundamentals.md#52-anonymous-functions)
- **Antiquated functions** - [17.3](en/01-fundamentals.md#173-naming-conventions)
- **Apply** - [7.3.3](en/01-fundamentals.md#733-reduce)
- **Arities** - [5.1.2](en/01-fundamentals.md#512-multiple-arities)
- **Asynchronous programming** - [16](en/01-fundamentals.md#16-coreasync), [4](en/04-recipes.md#4-async-recipes)
- **Atom** - [11.1](en/01-fundamentals.md#111-atoms)

## B

- **Batch processing** - [8.5](en/02-advanced.md#85-batch-processing), [8.1](en/04-recipes.md#81-batch-processing)
- **Behavior dispatch** - [13](en/01-fundamentals.md#13-multimethods)
- **Bencharking** - [8.7](en/02-advanced.md#87-bencharking)
- **Binding** - [11.4](en/01-fundamentals.md#114-vars)
- **Booleans** - [4.4](en/01-fundamentals.md#44-booleans)

## C

- **Caching** - [1.5](en/01-fundamentals.md#15-memoization), [8.6](en/02-advanced.md#86-preload-and-cache), [8.2](en/04-recipes.md#82-caching-with-ttl)
- **Case** - [6.1.5](en/01-fundamentals.md#615-case)
- **Channels** - [16.1](en/01-fundamentals.md#161-channels), [5](en/05-clojure-nim.md#concurrency)
- **Clojure/Nim** - [5](en/05-clojure-nim.md) — Native compilation, AI integration, JSON REPL
- **Compilation (native)** - [5](en/05-clojure-nim.md#what-is-clojure-nim)
- **Cross-compilation** - [5](en/05-clojure-nim.md#cross-compilation-targets) — JS, WASM, shared libraries
- **Characters** - [4.3](en/01-fundamentals.md#43-characters)
- **Chunked sequences** - [2.2](en/02-advanced.md#22-chunked-sequences)
- **Circuit breaker** - [3.4](en/04-recipes.md#34-circuit-breaker)
- **Closures** - [5.4](en/01-fundamentals.md#54-closures)
- **Coll** - [5.3](en/02-advanced.md#53-extending-collections)
- **Comment** - [3.5](en/01-fundamentals.md#35-comments)
- **Commitment** - [3.3](en/04-recipes.md#33-cooldown-mechanism)
- **Compilation** - [6.1](en/03-tooling.md#61-building-uberjars)
- **Composing functions** - [5.3](en/01-fundamentals.md#53-higher-order-functions)
- **concat** - [4.7](en/01-fundamentals.md#47-lists)
- **Concurrency** - [11](en/01-fundamentals.md#11-concurrency)
- **cond** - [6.1.3](en/01-fundamentals.md#613-cond)
- **condp** - [6.1.4](en/01-fundamentals.md#614-condp)
- **Configuration** - [1.3](en/01-fundamentals.md#13-keyword-arguments)
- **Cons** - [4.7](en/01-fundamentals.md#47-lists)
- **Contracts** - [5.3](en/04-recipes.md#53-contract-testing)
- **Core.async** - [16](en/01-fundamentals.md#16-coreasync)
- **Currying** - [5.3](en/01-fundamentals.md#53-higher-order-functions)

## D

- **Data structures** - [4](en/01-fundamentals.md#4-data-structures)
- **dead** - [11.7](en/01-fundamentals.md#117-stm-guidelines)
- **deb** - [8.5](en/03-tooling.md#85-breakpoints)
- **Debugging** - [8](en/03-tooling.md#8-debugging-techniques)
- **def** - [3.3.1](en/01-fundamentals.md#331-def)
- **defmacro** - [10.1](en/01-fundamentals.md#101-what-are-macros)
- **defmethod** - [13.1](en/01-fundamentals.md#131-defining-multimethods)
- **defmulti** - [13.1](en/01-fundamentals.md#131-defining-multimethods)
- **defn** - [5.1.1](en/01-fundamentals.md#511-basic-syntax)
- **defprotocol** - [12.1](en/01-fundamentals.md#121-protocols)
- **defrecord** - [12.2](en/01-fundamentals.md#122-records)
- **delay** - [11.6](en/01-fundamentals.md#116-promises-and-delivered)
- **Dependency management** - [2](en/03-tooling.md#2-depsedn-and-cli-tools)
- **Destructuring** - [8](en/01-fundamentals.md#8-destructuring)
- **disj** - [4.10](en/01-fundamentals.md#410-sets)
- **dissoc** - [4.9](en/01-fundamentals.md#49-maps)
- **Docker** - [6.3](en/03-tooling.md#63-docker-integration)
- **doseq** - [6.2.4](en/01-fundamentals.md#624-doseq-side-effects)
- **dosync** - [11.2](en/01-fundamentals.md#112-refs)
- **dotimes** - [6.2.3](en/01-fundamentals.md#623-for-list-comprehension)
- **drop** - [7.3.6](en/01-fundamentals.md#736-take--drop)
- **drop-while** - [7.3.6](en/01-fundamentals.md#736-take--drop)

## E

- **eastwood** - [5.1](en/03-tooling.md#51-eastwood-linter)
- **Either pattern** - [1.2](en/04-recipes.md#12-eitherresult-pattern)
- **emit** - [6.1](en/03-tooling.md#61-building-uberjars)
- **empty** - [4.12](en/01-fundamentals.md#412-collections-library)
- **Enumerations** - [4.5](en/01-fundamentals.md#45-keywords)
- **Error handling** - [6.3](en/01-fundamentals.md#63-exception-handling), [6.4](en/04-recipes.md#64-error-handling-middleware)
- **Evaluation rules** - [3.4](en/01-fundamentals.md#34-evaluation-rules)
- **Event sourcing** - [3.2](en/04-recipes.md#32-event-sourcing)
- **Exception handling** - [6.3](en/01-fundamentals.md#63-exception-handling)
- **expand** - [10.5](en/01-fundamentals.md#105-macro-expansion)
- **Extending types** - [12.3](en/01-fundamentals.md#123-extending-existing-types)

## F

- **Fibonacci** - [7.2](en/01-fundamentals.md#72-lazy-sequences)
- **filter** - [7.3.2](en/01-fundamentals.md#732-filter--remove)
- **find-doc** - [15.1](en/01-fundamentals.md#151-repl-commands)
- **First** - [4.7](en/01-fundamentals.md#47-lists)
- **Flatten** - [7.3.7](en/01-fundamentals.md#737-interpose--interleave)
- **flip** - [11.2](en/01-fundamentals.md#112-refs)
- **Float** - [4.1.2](en/01-fundamentals.md#412-floating-point)
- **fold** - [7.3.3](en/01-fundamentals.md#733-reduce), [6.2](en/02-advanced.md#62-using-reducers)
- **for** - [6.2.3](en/01-fundamentals.md#623-for-list-comprehension)
- **force** - [11.6](en/01-fundamentals.md#116-promises-and-delivered)
- **Formatting** - [3.6](en/01-fundamentals.md#36-whitespace-and-formatting)
- **Function composition** - [5.3](en/01-fundamentals.md#53-higher-order-functions)
- **Functional programming** - [1.2.2](en/01-fundamentals.md#122-functional-programming)
- **Functions** - [5](en/01-fundamentals.md#5-functions)
- **Futures** - [11.5](en/01-fundamentals.md#115-futures)

## G

- **gen** - [4.5](en/02-advanced.md#45-generative-testing)
- **Generative testing** - [14.4](en/01-fundamentals.md#144-generative-testing)
- **get** - [4.8](en/01-fundamentals.md#48-vectors)
- **get-in** - [4.9](en/01-fundamentals.md#49-maps)
- **Glossary** - [Appendix B](en/01-fundamentals.md#appendix-b-glossary)
- **group-by** - [7.3.7](en/01-fundamentals.md#737-interpose--interleave)

## H

- **hash-map** - [4.9](en/01-fundamentals.md#49-maps)
- **hash-set** - [4.10](en/01-fundamentals.md#410-sets)
- **Hierarchies** - [13.3](en/01-fundamentals.md#133-hierarchies)
- **Higher-order functions** - [5.3](en/01-fundamentals.md#53-higher-order-functions)
- **hot** - [4.2](en/03-tooling.md#42-reloading-code)

## I

- **Identities** - [11](en/01-fundamentals.md#11-concurrency)
- **if** - [3.3.3](en/01-fundamentals.md#333-if)
- **if-let** - [6.1.2](en/01-fundamentals.md#612-when--when-not)
- **if-not** - [6.1.1](en/01-fundamentals.md#611-if--if-not)
- **Immutability** - [1.2.1](en/01-fundamentals.md#121-immutability-by-default), [4](en/01-fundamentals.md#4-data-structures)
- **import** - [9.3](en/01-fundamentals.md#93-referring-and-importing)
- **in-ns** - [9.1](en/01-fundamentals.md#91-creating-and-switching-namespaces)
- **inc** - [4.2](en/01-fundamentals.md#42-strings)
- **indexed** - [7.3.7](en/01-fundamentals.md#737-interpose--interleave)
- **Infinite sequences** - [2.5](en/02-advanced.md#25-infinite-sequences)
- **Injection** - [7.3.8](en/01-fundamentals.md#738-interpose--interleave)
- **inline** - [8.2](en/02-advanced.md#82-transient-data-structures)
- **Installation** - [2.1](en/01-fundamentals.md#21-installation)
- **Integration testing** - [3.3](en/03-tooling.md#33-test-namespaces)
- **Interleave** - [7.3.8](en/01-fundamentals.md#738-interpose--interleave)
- **interpose** - [7.3.8](en/01-fundamentals.md#738-interpose--interleave)
- **into** - [7.3.7](en/01-fundamentals.md#737-interpose--interleave)
- **iterate** - [7.2](en/01-fundamentals.md#72-lazy-sequences)

## J

- **juxt** - [5.3](en/01-fundamentals.md#53-higher-order-functions)

## K

- **Keywords** - [4.5](en/01-fundamentals.md#45-keywords)
- **keys** - [8.2](en/01-fundamentals.md#82-map-destructuring)

## L

- **Lazy sequences** - [7.2](en/01-fundamentals.md#72-lazy-sequences), [2](en/02-advanced.md#2-lazy-sequences-deep-dive)
- **let** - [3.3.2](en/01-fundamentals.md#332-let)
- **letfn** - [5.1.3](en/01-fundamentals.md#513-variable-arguments)
- **Libraries** - [7](en/03-tooling.md#7-library-ecosystem)
- **Linters** - [5](en/03-tooling.md#5-code-quality-tools)
- **Lisp heritage** - [1.2.3](en/01-fundamentals.md#123-lisp-heritage)
- **Lists** - [4.7](en/01-fundamentals.md#47-lists)
- **load-file** - [15.2](en/01-fundamentals.md#152-repl-workflow)
- **local** - [3.2](en/03-tooling.md#32-fixtures-for-setupteardown)
- **Logging** - [8.6](en/03-tooling.md#86-logging)
- **loop** - [6.2.2](en/01-fundamentals.md#622-looprecur)

## M

- **macroexpand** - [10.5](en/01-fundamentals.md#105-macro-expansion)
- **Macros** - [10](en/01-fundamentals.md#10-macros)
- **Make** - [6.1](en/03-tooling.md#61-building-uberjars)
- **map** - [7.3.1](en/01-fundamentals.md#731-map)
- **map-indexed** - [7.3.1](en/01-fundamentals.md#731-map)
- **mapcat** - [7.3.5](en/01-fundamentals.md#735-mapcat)
- **mapv** - [7.3.1](en/01-fundamentals.md#731-map)
- **Maps** - [4.9](en/01-fundamentals.md#49-maps)
- **match-route** - [6.3](en/04-recipes.md#63-route-definitions)
- **max-key** - [5.3](en/01-fundamentals.md#53-higher-order-functions)
- **Maybe pattern** - [1.1](en/04-recipes.md#11-maybeoption-pattern)
- **Memoization** - [1.5](en/01-fundamentals.md#15-memoization), [8.6](en/02-advanced.md#86-preload-and-cache)
- **merge** - [4.9](en/01-fundamentals.md#49-maps)
- **merge-with** - [4.9](en/01-fundamentals.md#49-maps)
- **Metadata** - [1.7](en/02-advanced.md#17-function-metadata), [3.3.1](en/01-fundamentals.md#331-def)
- **min-key** - [5.3](en/01-fundamentals.md#53-higher-order-functions)
- **mod** - [4.1.1](en/01-fundamentals.md#411-integer-types)
- **multimethods** - [13](en/01-fundamentals.md#13-multimethods)
- **Mutability** - [11](en/01-fundamentals.md#11-concurrency)

## N

- **namespace** - [9.5](en/01-fundamentals.md#95-working-with-namespaces)
- **Namespaces** - [9](en/01-fundamentals.md#9-namespaces)
- **neg** - [4.2](en/01-fundamentals.md#42-strings)
- **nil** - [4.4](en/01-fundamentals.md#44-booleans)
- **not** - [4.4](en/01-fundamentals.md#44-booleans)
- **not-empty** - [4.12](en/01-fundamentals.md#412-collections-library)
- **ns** - [9.1](en/01-fundamentals.md#91-creating-and-switching-namespaces)
- **ns-publics** - [9.5](en/01-fundamentals.md#95-working-with-namespaces)
- **ns-resolve** - [9.5](en/01-fundamentals.md#95-working-with-namespaces)
- **nth** - [4.7](en/01-fundamentals.md#47-lists)
- **Numbers** - [4.1](en/01-fundamentals.md#41-numbers)

## O

- **or** - [3.5](en/01-fundamentals.md#35-special-forms)

## P

- **parallelize** - [11.7](en/01-fundamentals.md#117-stm-guidelines)
- **Parallelism** - [7](en/02-advanced.md#7-parallelism)
- **Parameter** - [5.1.3](en/01-fundamentals.md#513-variable-arguments)
- **parse** - [5.2](en/04-recipes.md#52-schema-validation)
- **partial** - [5.3](en/01-fundamentals.md#53-higher-order-functions)
- **partition** - [7.3.7](en/01-fundamentals.md#737-interpose--interleave)
- **partition-all** - [7.3.7](en/01-fundamentals.md#737-interpose--interleave)
- **partition-by** - [7.3.7](en/01-fundamentals.md#737-interpose--interleave)
- **peek** - [4.7](en/01-fundamentals.md#47-lists)
- **persist** - [7.2](en/01-fundamentals.md#72-lazy-sequences)
- **Persistent data structures** - [8.1](en/02-advanced.md#81-persistent-data-structures)
- **pheric** - [2.2](en/02-advanced.md#22-chunked-sequences)
- **pmap** - [7.1](en/02-advanced.md#71-pmap)
- **pop** - [4.8](en/01-fundamentals.md#48-vectors)
- **pos** - [4.2](en/01-fundamentals.md#42-strings)
- **postwalk** - [7.5](en/01-fundamentals.md#75-walking-collections)
- **preconditions** - [5.5](en/01-fundamentals.md#55-pre--and-post-conditions)
- **prewalk** - [7.5](en/01-fundamentals.md#75-walking-collections)
- **print** - [8.1](en/03-tooling.md#81-print-debugging)
- **println** - [4.2](en/01-fundamentals.md#42-strings)
- **Process** - [3.1](en/04-recipes.md#31-service-pattern-with-atoms)
- **profile** - [8.3](en/03-tooling.md#83-repl-debugging)
- **project** - [1](en/03-tooling.md#1-project-structure)
- **promise** - [11.6](en/01-fundamentals.md#116-promises-and-delivered)
- **Promises** - [11.6](en/01-fundamentals.md#116-promises-and-delivered)
- **Protocols** - [12](en/01-fundamentals.md#12-protocols-and-records)
- **put** - [16.1](en/01-fundamentals.md#161-channels)

## Q

- **quick-check** - [3.1](en/03-tooling.md#31-testcheck-for-generative-testing), [14.4](en/01-fundamentals.md#144-generative-testing)

## R

- **rand** - [7.4](en/01-fundamentals.md#74-creating-sequences)
- **Random** - [7.4](en/01-fundamentals.md#74-creating-sequences)
- **range** - [7.4](en/01-fundamentals.md#74-creating-sequences)
- **Ratio** - [4.1.3](en/01-fundamentals.md#413-ratios)
- **Readers** - [2.1](en/03-tooling.md#21-depsedn-reference)
- **realized** - [2.1](en/02-advanced.md#21-realizing-sequences)
- **reduced** - [3.4](en/02-advanced.md#34-early-termination)
- **Reducers** - [6](en/02-advanced.md#6-reducibles)
- **reduce** - [7.3.3](en/01-fundamentals.md#733-reduce)
- **reduce-kv** - [7.3.3](en/01-fundamentals.md#733-reduce)
- **reductions** - [7.3.3](en/01-fundamentals.md#733-reduce)
- **Ref** - [11.2](en/01-fundamentals.md#112-refs)
- **ref-set** - [11.2](en/01-fundamentals.md#112-refs)
- **refresh** - [4.1](en/03-tooling.md#41-repl-driven-development)
- **release** - [11.3](en/01-fundamentals.md#113-agents)
- **remove** - [7.3.2](en/01-fundamentals.md#732-filter--remove)
- **remove-method** - [13.4](en/01-fundamentals.md#134-remove-method)
- **repeat** - [7.4](en/01-fundamentals.md#74-creating-sequences)
- **repeatedly** - [7.4](en/01-fundamentals.md#74-creating-sequences)
- **require** - [9.3](en/01-fundamentals.md#93-referring-and-importing)
- **require** - [4.1](en/03-tooling.md#41-repl-driven-development)
- **reset!** - [11.1](en/01-fundamentals.md#111-atoms)
- **rest** - [4.7](en/01-fundamentals.md#47-lists)
- **REPL** - [2.2](en/01-fundamentals.md#22-your-first-clojure-project), [15](en/01-fundamentals.md#15-the-repl)
- **rest** - [7.3.6](en/01-fundamentals.md#736-take--drop)
- **reverse** - [7.3.9](en/01-fundamentals.md#739-distinct--sort--shuffle)

## S

- **s/conform** - [8.2](en/03-tooling.md#82-stack-traces)
- **s/gen** - [4.5](en/02-advanced.md#45-generative-testing)
- **sample** - [4.5](en/02-advanced.md#45-generative-testing)
- **Schema validation** - [5.2](en/04-recipes.md#52-schema-validation)
- **select-keys** - [4.9](en/01-fundamentals.md#49-maps)
- **send** - [11.3](en/01-fundamentals.md#113-agents)
- **send-off** - [11.3](en/01-fundamentals.md#113-agents)
- **seq** - [7.1](en/01-fundamentals.md#71-the-sequence-abstraction)
- **Sequences** - [7](en/01-fundamentals.md#7-sequences-and-lazy-evaluation)
- **seqable** - [2.4](en/02-advanced.md#24-seqable-objects)
- **Service pattern** - [3.1](en/04-recipes.md#31-service-pattern-with-atoms)
- **set** - [4.10](en/01-fundamentals.md#410-sets)
- **set!** - [11.4](en/01-fundamentals.md#114-vars)
- **Shallow** - [8.1](en/02-advanced.md#81-persistent-data-structures)
- **shuffle** - [7.3.9](en/01-fundamentals.md#739-distinct--sort--shuffle)
- **shutdown** - [11.3](en/01-fundamentals.md#113-agents)
- **some** - [7.3.2](en/01-fundamentals.md#732-filter--remove)
- **some->** - [17.6](en/01-fundamentals.md#176-threading-macros)
- **some-fn** - [5.3](en/01-fundamentals.md#53-higher-order-functions)
- **sort** - [7.3.9](en/01-fundamentals.md#739-distinct--sort--shuffle)
- **sort-by** - [7.3.9](en/01-fundamentals.md#739-distinct--sort--shuffle)
- **Source tracking** - [4.3](en/03-tooling.md#43-source-tracking)
- **spec** - [4](en/02-advanced.md#4-specs-and-validation)
- **split-at** - [7.3.6](en/01-fundamentals.md#736-take--drop)
- **split-with** - [7.3.6](en/01-fundamentals.md#736-take--drop)
- **Stack traces** - [8.2](en/03-tooling.md#82-stack-traces)
- **State machine** - [1.3](en/04-recipes.md#13-state-machine-pattern)
- **STM** - [11.2](en/01-fundamentals.md#112-refs)
- **stop** - [3.1](en/04-recipes.md#31-service-pattern-with-atoms)
- **str** - [4.2](en/01-fundamentals.md#42-strings)
- **Strings** - [4.2](en/01-fundamentals.md#42-strings)
- **Structural sharing** - [8.1](en/02-advanced.md#81-persistent-data-structures)
- **subs** - [4.2](en/01-fundamentals.md#42-strings)
- **subvec** - [4.8](en/01-fundamentals.md#48-vectors)
- **superiors** - [13.3](en/01-fundamentals.md#133-hierarchies)
- **swap!** - [11.1](en/01-fundamentals.md#111-atoms)
- **Symbols** - [4.6](en/01-fundamentals.md#46-symbols)

## T

- **TAP** - [8.1](en/03-tooling.md#81-print-debugging)
- **take** - [7.3.6](en/01-fundamentals.md#736-take--drop)
- **take-nth** - [7.3.6](en/01-fundamentals.md#736-take--drop)
- **take-while** - [7.3.6](en/01-fundamentals.md#736-take--drop)
- **test** - [3.3](en/03-tooling.md#33-test-namespaces), [14.1](en/01-fundamentals.md#141-clojuretest)
- **test.check** - [14.4](en/01-fundamentals.md#144-generative-testing)
- **Testing** - [14](en/01-fundamentals.md#14-testing)
- **test** - [4.5](en/02-advanced.md#45-generative-testing)
- **thread-bound** - [11.4](en/01-fundamentals.md#114-vars)
- **Thread-first** - [17.6](en/01-fundamentals.md#176-threading-macros)
- **Thread-last** - [17.6](en/01-fundamentals.md#176-threading-macros)
- **throw** - [6.3](en/01-fundamentals.md#63-exception-handling)
- **Timeout** - [4.3](en/04-recipes.md#43-timeout-patterns)
- **to** - [4.6](en/01-fundamentals.md#46-symbols)
- **trace** - [8.5](en/03-tooling.md#85-breakpoints)
- **track** - [4.3](en/03-tooling.md#43-source-tracking)
- **Transducers** - [3](en/02-advanced.md#3-transducers)
- **transient** - [8.2](en/02-advanced.md#82-transient-data-structures)
- **Transitive** - [13.3](en/01-fundamentals.md#133-hierarchies)
- **Tree operations** - [2.4](en/04-recipes.md#24-tree-operations)
- **tree-seq** - [7.5](en/01-fundamentals.md#75-walking-collections)
- **try** - [6.3](en/01-fundamentals.md#63-exception-handling)
- **Type checking** - [5.4](en/03-tooling.md#54-typed-clojure-optional-type-checking)
- **type** - [12.2](en/01-fundamentals.md#122-records)

## U

- **uberjar** - [6.1](en/03-tooling.md#61-building-uberjars)
- **Unquote** - [10.3](en/01-fundamentals.md#103-unquoting)
- **update** - [4.9](en/01-fundamentals.md#49-maps)
- **update-in** - [4.9](en/01-fundamentals.md#49-maps)
- **use** - [9.3](en/01-fundamentals.md#93-referring-and-importing)
- **use-fixtures** - [3.2](en/03-tooling.md#32-fixtures-for-setupteardown)

## V

- **val** - [7.1](en/01-fundamentals.md#71-the-sequence-abstraction)
- **validate** - [5.1](en/04-recipes.md#51-multi-stage-validation)
- **Validation** - [5](en/04-recipes.md#5-validation-recipes)
- **vals** - [4.9](en/01-fundamentals.md#49-maps)
- **var** - [3.3.1](en/01-fundamentals.md#331-def)
- **var-get** - [11.4](en/01-fundamentals.md#114-vars)
- **Vars** - [11.4](en/01-fundamentals.md#114-vars)
- **vec** - [4.8](en/01-fundamentals.md#48-vectors)
- **Vector** - [4.8](en/01-fundamentals.md#48-vectors)
- **vector-of** - [4.8](en/01-fundamentals.md#48-vectors)
- **volatile** - [11.1](en/01-fundamentals.md#111-atoms)

## W

- **when** - [6.1.2](en/01-fundamentals.md#612-when--when-not)
- **when-bind** - [10.6.2](en/01-fundamentals.md#1062-conditional-compilation)
- **when-first** - [6.1.2](en/01-fundamentals.md#612-when--when-not)
- **when-let** - [6.1.2](en/01-fundamentals.md#612-when--when-not)
- **when-not** - [6.1.2](en/01-fundamentals.md#612-when--when-not)
- **while** - [6.2](en/01-fundamentals.md#62-iteration)
- **Whitespace** - [3.6](en/01-fundamentals.md#36-whitespace-and-formatting)
- **Windowing** - [4.4](en/04-recipes.md#44-windowing)

## Z

- **zero** - [4.2](en/01-fundamentals.md#42-strings)
- **zipmap** - [4.9](en/01-fundamentals.md#49-maps)