carbon-hvze

## kafka-cheat-sheet.md

      
              1 file
            
          
              135 forks
            
          
              18 comments
            
          
              415 stars
            
          
                ursuad
                / kafka-cheat-sheet.md
            
            
              Last active
              June 25, 2024 13:23
            
              
                Quick command reference for Apache Kafka
              
          
    Kafka Topics

List existing topics

bin/kafka-topics.sh --zookeeper localhost:2181 --list
Describe a topic

bin/kafka-topics.sh --zookeeper localhost:2181 --describe --topic mytopic 
Purge a topic

bin/kafka-topics.sh --zookeeper localhost:2181 --alter --topic mytopic --config retention.ms=1000
... wait a minute ...

  
## 00_destructuring.md

      
              2 files
            
          
              101 forks
            
          
              12 comments
            
          
              678 stars
            
          
                john2x
                / 00_destructuring.md
            
            
              Last active
              June 6, 2024 13:40
            
              
                Clojure Destructuring Tutorial and Cheat Sheet
              
          
    Clojure Destructuring Tutorial and Cheat Sheet

(Related blog post)
Simply put, destructuring in Clojure is a way extract values from a datastructure and bind them to symbols, without having to explicitly traverse the datstructure. It allows for elegant and concise Clojure code.
Vectors and Sequences


## random-str.clj
(defn rand-str [len]
  (apply str (take len (repeatedly #(char (+ (rand 26) 65))))))

## gist:1418850
(defn uuid [] (str (java.util.UUID/randomUUID)))
	(defn rand-str [len]
	(apply str (take len (repeatedly #(char (+ (rand 26) 65))))))