### Start Clojure Server Programmatically

Source: https://clojuredocs.org/core-library/index

Demonstrates how to programmatically start a Clojure socket server using clojure.core.server. This allows exposing the Clojure environment over a network connection for remote interaction.

```clojure
(require '[clojure.core.server :as server])

(defn start-repl-server [port]
  (server/start-server port :accept clojure.core.server/repl))

;; Example usage:
;; (start-repl-server 8881)
```

--------------------------------

### Set Operations with clojure.set

Source: https://clojuredocs.org/core-library/index

Provides examples of common set operations using the `clojure.set` namespace, such as calculating intersections and checking for subsets. These functions operate on Clojure's set data structures.

```clojure
(require '[clojure.set :as set])

(let [set1 #{1 2 3 4}
      set2 #{3 4 5 6}]
  (println "Intersection:")
  (println (set/intersection set1 set2))
  
  (println "Is #{1 2} a subset of set1?")
  (println (set/subset? #{1 2} set1))
  
  (println "Is set1 a subset of #{1 2 3 4 5 6}?")
  (println (set/subset? set1 #{1 2 3 4 5 6}})))
```

--------------------------------

### Dynamically Add Libraries at REPL with clojure.repl.deps

Source: https://clojuredocs.org/core-library/index

Illustrates how to use `clojure.repl.deps` to dynamically modify available libraries at the REPL without restarting. This is useful for development-time experimentation.

```clojure
(require '[clojure.repl.deps :refer [add-lib sync-deps]])

;; To add a library:
;; (add-lib 'org.clojure/tools.logging "1.0.0")

;; To synchronize dependencies:
;; (sync-deps)
```

--------------------------------

### String Manipulation with clojure.string

Source: https://clojuredocs.org/core-library/index

Demonstrates idiomatic string manipulation in Clojure using the clojure.string namespace. Functions like lower-case, trim, replace, and capitalize are shown, often used with the thread-first macro (->).

```clojure
(require '[clojure.string :as str])

(-> "  .LIRpa   ni  yAD    dloc thgIrb  a sAw Ti  "

    str/reverse

    str/trim

    str/lower-case

    (str/replace #“\s+” " ")

    str/capitalize)


;;=> “It was a bright cold day in april”
```

--------------------------------

### Deserialize EDN Data with clojure.edn

Source: https://clojuredocs.org/core-library/index

Shows how to deserialize Clojure data structures from a string using `clojure.edn/read` or `clojure.edn/read-string`. Emphasizes using these functions for untrusted data over `clojure.core/read` due to security concerns.

```clojure
(require '[clojure.edn :as edn])

(let [edn-string "{:a 1 :b [2 3]}"]
  (println (edn/read (java.io.StringReader. edn-string)))
  (println (edn/read-string edn-string)))
```

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