yogthos

               _..--+~/@-@--.
             -     (    ^   )
          ==~          ....
        -        --=.\ \    
      -~      _.      \ \ _\
     -       -          ,__,
    =
   '      =
  :       :                                 .

yogthos

• clj-pdf
• markdown-clj
• migratus
• reagent-forms
• reagent-template
• selmer

yogthos

Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.

Data Structure Basics

###Array ####Definition:

• Stores data elements based on an sequential, most commonly 0 based, index.
• Based on tuples from set theory.

yogthos

;;Clojure
(re-find #"(?i)ol" "HOLA")
;=>"OL"
(clojure.string/replace "HOLA" #"(?i)ol" "EY")
;=>"HEYA"

;;ClojureScript
(re-find #"(?i)ol" "HOLA")
;=>"OL"
(clojure.string/replace "HOLA" #"(?i)ol" "EY")

yogthos

(def doc (atom {:items       ["foo" "bar" "baz"]
                :table-items [["foo" "bar" "baz"]
                              ["blah" "bleh" "blub"]]}))

(defn remove-at [v i]
  (vec (into (subvec v 0 i) (subvec v (inc i) (count v)))))

(defn list-field []
  [:div
   [:ul

yogthos

(defn gen-name [k l]
  (loop [n #(mod (* 399 %) 509)
         r (nth "BDGKPNTVZ" (mod (n k) 9))
         k k
         i 0]
      (if (< i l)
        (recur n
               (str r (-> ["aeiouaeio" "bdgknptvwz"] (nth (bit-and i 1)) (nth (mod (n k) 9))))
               (n k)
               (inc i))

yogthos

(def messages (atom ["message 1" "message 2" "message 3"]))

(defn side-bar []
  (let [users (atom ["Bob" "Jane" "Alice"])
        selected-user (atom nil)]
    (fn []
      [:ul.list-group
       (into
         [:ul]
         (map

yogthos

(def dict-16 [\0 \1 \2 \3 \4 \5 \6 \7 \8 \9 \A \B \C \D \E \F])

(def dict-32 [\1 \2 \3 \4 \5 \6 \7 \8 \9 \A \B \C \D \E \F \G \H \J \K \M \N \P \Q \R \S \T \U \V \W \X \Y \Z])

(def dict-64 [\0 \1 \2 \3 \4 \5 \6 \7 \8 \9 \A \B \C \D \E \F \G \H \I \J \K \L \M \N \O \P \Q \R \S \T \U \V \W \X \Y \Z \a \b \c \d \e \f \g \h \i \j \k \l \m \n \o \p \q \r \s \t \u \v \w \x \y \z])

(def dict-89 [\0 \1 \2 \3 \4 \5 \6 \7 \8 \9 \A \B \C \D \E \F \G \H \I \J \K \L \M \N \O \P \Q \R \S \T \U \V \W \X \Y \Z \a \b \c \d \e \f \g \h \i \j \k \l \m \n \o \p \q \r \s \t \u \v \w \x \y \z \+ \" \@ \* \# \% \& \/ \| \( \) \= \? \~ \[ \] \[ \} \$ \- \_ \. \: \space \, \; \< \>])

(defn encode [dict value]
  (let [base (-> dict count str BigInteger.)]

yogthos

(ns ascii-table)

(defn transpose [m]
  (apply mapv vector m))

(defn col-width [rows text-width]
  (let [num-cols (-> rows first count)]
    (int (/ (- text-width 2 (dec num-cols)) num-cols))))

(defn height [length width]

yogthos

Creating a guestbook application

install the Leiningen build tool

wget https://raw.githubusercontent.com/technomancy/leiningen/stable/bin/lein
chmod +x lein

create a new project