jFransham

Achieving warp speed with Rust

Contents:

• Number one optimization tip: don't
• Never optimize blindly
• Don't bother optimizing one-time costs
• Improve your algorithms
• CPU architecture primer
• Keep as much as possible in cache
• Keep as much as possible in registers

voldmar

#!/usr/bin/env boot
; vim: set ft=clojure:

(set-env! :dependencies
          '[[com.itextpdf/forms "7.0.2"]])

(import
  '[com.itextpdf.forms PdfAcroForm]
  '[com.itextpdf.kernel.pdf PdfDocument PdfReader PdfWriter]
  '[java.io IOException])

yoshuawuyts

Nix seems perfect for developers - until I try to use it...

Want to use Nix for development but you're not sure how? Concerned about the fluidity of nixpkgs channels or not being able to easily install arbitrary package versions?

When I first heard about Nix it seemed like the perfect tool for a developer. When I tried to actually use it for developing and deploying web apps, though, the pieces just didn't seem to add up.

wvengen

Finding a Ruby memory leak using a time analysis

When developing a program in Ruby, you may sometimes encounter a memory leak. For a while now, Ruby has a facility to gather information about what objects are laying around: ObjectSpace.

There are several approaches one can take to debug a leak. This discusses a time-based approach, where a full memory dump is generated every, say, 5 minutes, during a time that the memory leak is showing up. Afterwards, one can look at all the objects, and find out which ones are staying around, causing the

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

ThomasHintz

(require-extension ansi-escape-sequences srfi-19 srfi-1 srfi-13 posix)

(define (reload-config) (load "~/.hiss"))

(define-syntax install (syntax-rules () ((sudo arg1 ...) (_raw sudo apt-get install arg1 ...))))
(define-syntax ! (syntax-rules () ((! arg1 ...) (_raw arg1 ...))))
(define-syntax apt-search (syntax-rules () ((apt-search arg1 ...) (_raw aptitude search arg1 ...))))

(define ++ string-append)

kuroda

[user]
  name = Tsutomu Kuroda
  email = t-kuroda@oiax.jp
[alias]
  ci = commit
  cia = commit --amend
  co = checkout
  cop = checkout @{-1}
  cp = cherry-pick
  mf = merge --ff-only

zardoru

/* use this one. github is not cooperating. */
using System;
using System.Collections.Generic;
using System.Text;
using System.Threading.Tasks;
using System.Text.RegularExpressions;

/* god my c# is so messy.
 * I'm not fond of proper C#. I rather like C, really
 */

kuroda

# Prompts
#   30 31 32 33 34 35 36 37
#   BK RE GR YE BL MA CY WH
if [ $UID = "0" ]; then
	PROMPT="%{%}%n@%m%#%{%} "
else
	PROMPT="%{%}%n@%m%#%{%} "
fi
RPROMPT="%{%}[%~]%{%}"

rastasheep

MiniTest::Spec

use must for positive expectations and wont for negative expectations.

• must_be | list.size.must_be :==, 0
• must_be_close_to | subject.size.must_be_close_to 1,1
• must_be_empty | list.must_be_empty
• must_be_instance_of | list.must_be_instance_of Array
• must_be_kind_of | list.must_be_kind_of Enumerable