didibus

My answer to: https://www.reddit.com/r/Clojure/comments/pcwypb/us_engineers_love_to_say_the_right_tool_for_the/ which asked to know when and at what is Clojure "the right tool for the job"?

My take is that in general, the right tool for the job actually doesn't matter that much when it comes to programming language.

There are only a few cases where the options of tools that can do a sufficiently good job at the task become limited.

That's why they are called: General-purpose programming languages, because they can be used generally for most use cases without issues.

Let's look at some of the dimensions that make a difference and what I think of Clojure for them:

lvm

Installation

1. put foxdot-cli.py in the same directory as the FoxDot installaton (in case you're using virtualenv, otherwise comment from lines 5 to 7)
2. copy foxdot-mode.el to ~/.emacs.d/lisp
3. add (defvar foxdot-cli-path "/path/to/foxdot-cli/") in your ~/.emacs file
4. in Emacs M-x load-library and complete with foxdot-mode
5. Type C-c C-f or M-x foxdot-start to start
6. Type C-c C-e or M-x foxdot-execute to evaluate a line or a block of code

robphoenix

This is unmaintained, please visit Ben-PH/spacemacs-cheatsheet

Useful Spacemacs commands

• SPC q q - quit
• SPC w / - split window vertically
• SPC w - - split window horizontally
• SPC 1 - switch to window 1
• SPC 2 - switch to window 2
• SPC w c - delete current window

Integralist

• defprotocol: defines an interface
• deftype: create a bare-bones object which implements a protocol
• defrecord: creates an immutable persistent map which implements a protocol

Typically you'll use defrecord (or even a basic map);
unless you need some specific Java inter-op,
where by you'll want to use deftype instead.

Note: defprotocol allows you to add new abstractions in a clean way Rather than (like OOP) having polymorphism on the class itself,

theskumar

# -*- coding: utf-8 -*-
''' Generates database schema graph from a relational database.
Usages:
Add database configuation in this file and then
python app.py

Note: You must have your latest database schema in the database
engine you are running against.
'''
from __future__ import unicode_literals, absolute_import

frdmn

Install OS X 10.10 Yosemite in VirtualBox

Due to the high usage of this guide and the lack of comfort in Gist's commenting area, I decided to make a blog post out of this which you can find here:

http://blog.frd.mn/install-os-x-10-10-yosemite-in-virtualbox/

richhickey

(require '[clojure.core.async :as a])

(def xform (comp (map inc)
              (filter even?)
              (dedupe)
              (flatmap range)
              (partition-all 3)
              (partition-by #(< (apply + %) 7))
              (flatmap flatten)
              (random-sample 1.0)

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

lrhache

On a recent project, I ran into an issue with Python Selenium webdriver. There's no easy way to open a new tab, grab whatever you need and return to original window opener.

Here's a couple people who ran into the same complication:

• http://stackoverflow.com/questions/17547473/how-to-open-a-new-tab-using-selenium-webdriver
• http://stackoverflow.com/questions/6421988/webdriver-open-new-tab/9122450#9122450
• https://groups.google.com/forum/#!topic/selenium-users/kah4iEPRopc
• ... and many many more.

So, after many minutes (read about an hour) of searching, I decided to do find a quick solution to this problem.

postspectacular

(ns resonate-2013.agents
  (:use quil.core))

(def num-agents 50)
(def num-targets 10)

;;; atom to hold global app state
(def app-state (atom {}))

;;; cheapskate vector ops