dustingetz

(ns app
  "Full stack, multiplayer todo list app in one file"
  (:require [datascript.core :as d]
            [hyperfiddle.photon :as p]
            [hyperfiddle.photon-dom :as dom]
            [hyperfiddle.photon-ui :as ui])
  #?(:cljs (:require-macros app)))

(defonce !conn #?(:clj (d/create-conn {}) :cljs nil))

matthewdowney

(defn xf-sort
  "A sorting transducer. Mostly a syntactic improvement to allow composition of
  sorting with the standard transducers, but also provides a slight performance
  increase over transducing, sorting, and then continuing to transduce."
  ([]
   (xf-sort compare))
  ([cmp]
   (fn [rf]
     (let [temp-list (java.util.ArrayList.)]
       (fn

vvvvalvalval

{:db/ident :bsu.fns/reset-to-many-by,
 :db/doc "Resets the set of entities which are related to `eid` via `ref-attr` to the set given by `val-maps`.
          Assumptions:
          * `ref-attr` is a cardinality-many, ref attribute.
          * `e` is an entity identifier for an _existing_ entity
          (you have to know whether an entity exists before using this function,
          and it's pointless to use it on a non-existing entity as opposed to just asserting all the new values.)
          * `val-maps` is a seq of transaction maps, all of which have the `v-id-attr` key provided.
          * `retract-target-entity?`: whether to call :db.fn/retractEntity on the old entities which get removed from the relationship.
          * the old values of the relationship all have the `id-attr` attribute."

rauhs

(defmacro datomic-fn
  "Creates a datomic function given (fn [db e a ...] code...)"
  [[_ args & body]]
  `(d/function '{:lang "clojure"
                 :params ~args
                 :code (do ~@body)}))

(defn trinity-new
  "1. If a is a ref:
  Ensures that

kachayev

Parsing CSS file with monadic parser in Clojure

Inspired by "Parsing CSS with Parsec".

Just quick notes and code that you can play with in REPL.

By @kachayev

0. Intro

john2x

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

natelandau

#  ---------------------------------------------------------------------------
#
#  Description:  This file holds all my BASH configurations and aliases
#
#  Sections:
#  1.   Environment Configuration
#  2.   Make Terminal Better (remapping defaults and adding functionality)
#  3.   File and Folder Management
#  4.   Searching
#  5.   Process Management

wvdlaan

(ns myupsert.core
  (require [datomic.api :as d]))

(def schema
  [
   {:db/id #db/id [:db.part/db]
    :db/ident :product/name
    :db/valueType :db.type/string
    :db/cardinality :db.cardinality/one
    :db.install/_attribute :db.part/db}

stuarthalloway

;; Datomic example code
;;
;; The extent of entity ?x is all datoms that are about ?x.
;; Drop this into your rules.
;;
;; Demonstrates
;;
;; 1. recursive query (extent calls itself)
;; 2. disjunction (different extent bodies are ORed)
;; 3. component attributes (e.g. your arm is a component, your brother isn't)