simonholgate

(defn clob-to-string [clob]
  "Turn an Oracle Clob into a String"
  (with-open [rdr (java.io.BufferedReader. (.getCharacterStream clob))]
    (apply str (line-seq rdr))))

(with-connection mydb
  (transaction
   (with-query-results rs ["select documentation from station"] 
     ; rs will be a sequence of maps, 
     ; one for each record in the result set. 

clojens

(def ptrn
  {
   :a {:pattern #"a(?!b)"
       :purpose "Only allow a if it is not preceded by a 'b' (negative lookahead)"
       :samples ["acdefg" ; ok
                 "abcdef" ; nil
                 ]}
   
   :b {:pattern #"(?i)(<title.*?>)(.+?)(</title>)"

oakes

Contents

• Why care about Rust?
• The Toolchain
• Creating a New Project
• Modules
• Crates
• Types
• References
• Mutability

henryw-erudine

(ns datascript-to-datomic-util
  (:require [datascript :as d]))

;;;; a utility to help with a datomic-datascript roundtrip process involving:
;;; 1. export some data from a datomic database and transact into a datascript instance.
;;; 2. perform one or more transactions against datascript.
;;; 3. transact the sum of all changes made against datascript back into datomic in a single tx

;;; this namespace contains two public functions:
;;; listen-for-changes: listen to datascript transactions and build up a record of changes

pesterhazy

create table if not exists migrations (
  key text CONSTRAINT pkey PRIMARY KEY
);

create or replace function idempotent(migration_name text,code text) returns void as $$
begin
if exists (select key from migrations where key=migration_name) then
  raise notice 'Migration already applied: %', migration_name;
else
  raise notice 'Running migration: %', migration_name;

ridercz

/*****************************************************************************
** OpenSCAD Example Code by Michal Altair Valasek - https://www.rider.cz    **
** Licensed under terms of Creative Commons Attribution License (cc-by)     **
** https://creativecommons.org/licenses/by/4.0/                             **
*****************************************************************************/

base_width = 40;    // X
base_depth = 30;    // Y
base_height = 20;   // Z
wall = 1;

mmzsource

(require '[clojure.string :as s])
(declare print-maze)

;; Maze GENERATION

(defn create-grid [rows cols]
  (vec (repeat rows (vec (repeat cols #{})))))

(defn north-of [[row col]] [(dec row) col])
(defn south-of [[row col]] [(inc row) col])

mohanpedala

Table of Contents

• set -e, -u, -x, -o pipefail
• set -e
• set -x
• set -u
• set -o pipefail
• Setting IFS
• Original Reference

set -e, -u, -x, -o pipefail

ian-moore

(ns my-shadow-app.dev-server
  (:require [clj-http.client :as client]
            [clojure.string :as string]
            [shadow.http.push-state :as push-state])
  (:import [org.apache.http NoHttpResponseException]))
           
(defn handler
  [{:keys [uri http-config body headers request-method] :as request}]
  (if-not (string/starts-with? uri "/api")
    (push-state/handle request)

yogthos

Introductory resources

• High level overview https://yogthos.github.io/ClojureDistilled.html
• An Animated Introduction to Clojure https://markm208.github.io/cljbook/
• Interactive tutorial in a browser https://tryclojure.org/
• Interactive exercises http://clojurescriptkoans.com/
• Clerk notebooks with introductory examples https://github.clerk.garden/anthonygalea/notes-on-clojure
• More interactive exercises https://4clojure.oxal.org/
• Lambda Island tutorials https://lambdaisland.com/
• Functional Programming with Clojure resources https://practicalli.github.io/