carld

(use-modules (ice-9 readline))
(activate-readline)

carld

• https://leanpub.com/build-apis-you-wont-hate/read
• https://github.com/vhf/free-programming-books/blob/master/free-programming-books.md
• https://github.com/sindresorhus/awesome

carld

(use-modules (system foreign))

(define crypt
  (let ((f (pointer->procedure '* (dynamic-func "crypt" (dynamic-link))
                               (list '* '*))))
    (lambda (key salt)
      (let ((r (f (string->pointer key) (string->pointer salt))))
        (pointer->string r)))))

(simple-format #t "Test: ~s" (crypt "key" "salt"))

carld

gdb
(gdb) file /opt/ruby-2.2.3/bin/ruby
(gdb) attach [pid]
 
# output of the C backtrace goes to the gdb console
(gdb) eval "backtrace"
 
# output of the Ruby application backtrace below goes to ruby stdout (rails logger?)
(gdb) call rb_backtrace()
(gdb) continue

carld

ssh -nNT -L [local port]:[remote IP addr]:[remote port] user@machine-with-access-to-remote

carld

for dir in `find . -type d -depth 1`; do
  cd $dir;
  if [ -d .git ]; then
    if git branch -ra | grep -q "$B2\$"; then
      echo $dir;
      git diff --shortstat $B1 $B2;
    fi
  fi
  cd ..;
done

carld

    require 'rails_erd/diagram/graphviz'
    RailsERD::Diagram::Graphviz.create

carld

#!/usr/bin/env ruby
require 'pleasant_lawyer'
git_branch_name = `git symbolic-ref -q HEAD`
branch_name = File.basename(git_branch_name).gsub(/_/," ")
file = File.open(ARGV[0], 'r')
contents = file.read
file.close
File.open(ARGV[0], 'w') do |file|
  file.write("B##{PleasantLawyer.convert(branch_name)} ") if branch_name.split(/ /).length == 2
  file.write(contents)

carld

section .text
global start
start:
	mov rsi, s1     ; esi = &s1
	mov rdi, s2     ; edi = &s2
	xor rdx, rdx    ; edx = 0
loop:
	mov al, [rsi + rdx]
	mov bl, [rdi + rdx]
	inc rdx

carld

git difftool -y -x "colordiff -y -W $COLUMNS" origin/prod origin/master | less -R