jgrahamc

func doMightError() (err error) {
  switch {
    case !doFirst(&err):
    case !doSecond(&err):
    case !doThird(&err):
    default:
      moreStuff()
  }
  
  return

jgrahamc

func doMightError() (err error) {
  if err = doFirst(); err != nil {
    return
  }
  
  if err = doSecond(); err != nil {
    return
  }

  if err = doThird(); err != nil {

jgrahamc

use strict;
use warnings;

my @alpha = split('', 'ABCDEFGHIJKLMNOPQRSTUVWXYZ');

my %frequencies = ( 'A' => 84, 'B' => 23, 'C' => 21, 'D' => 46, 'E' => 116,
                    'F' => 20, 'G' => 25, 'H' => 49, 'I' => 76, 'J' => 2,
                    'K' => 5,  'L' => 38, 'M' => 34, 'N' => 66, 'O' => 66,
                    'P' => 15, 'Q' => 2,  'R' => 64, 'S' => 73, 'T' => 81,
                    'U' => 19, 'V' => 11, 'W' => 21, 'X' =>  2, 'Y' => 24,

jgrahamc

#include "stdint.h"
#include "stdio.h"

void main(int argc, void *argv[]) {
  uint64_t i;
  for (i = 0; i < 2^32; i++) {
    uint32_t x = (uint32_t)i;
    uint32_t l = (-x-1) & 0xffff;
    uint32_t r = ~x & 0xffff;
    if (l != r) {

jgrahamc

int b = 100;
int s = 640;
int w = b*(s/b);
int h = w;

void setup() {
  background(0);
  size(w, h);
  int side = w/b - 1;
  int x;

jgrahamc

// Copyright (c) 2014 John Graham-Cumming
//
// Takes a CSV containing rows in the form
//
// ip,name
//
// Connects to 'ip' on port 443 using TLS presenting the SNI name 'name' and
// verifies the result.

package main

jgrahamc

$(call to_n,4) = $(words ) $(if $(filter-out 4,$(words x )),$(call to_n,4,x )) # $1 == 4, $2 is blank
               = 0 $(if $(filter-out 4,1),$(call to_n,4,x ))                   # $(filter-out 4,1) is 1
               = 0 $(if 1,$(call to_n,4,x ))                                   # So the $(call) will happen
               = 0 $(call to_n,4,x )
               = 0 $(words x ) $(if $(filter-out 4,$(words x x )),$(call to_n,4,x x ))
               = 0 1 $(if $(filter-out 4,2)),$(call to_n,4,x x ))              # $(filter-out 4,2) is 2
               = 0 1 $(if 2,$(call to_n,4,x x))                                # So the $(call) will happen
               = 0 1 $(call to_n,4,x x)
               = 0 1 $(words x x ) $(if $(filter-out 4,$(words x x x)),$(call to_n,4,x x x ))
               = 0 1 2 $(if $(filter-out 4,3),$(call to_n,4,x x x ))          # $(filter-out 4,3) is 3

jgrahamc

all: | parallel	; @echo $(JOB_COUNT)

parallel: .parallel ; @$(eval JOB_COUNT := $(shell sort -n $< | tail -n 1))
.parallel: FORCE ; @$(MAKE) --no-print-directory par 2>/dev/null >$@ || true
FORCE:

to_n = $(words $2) $(if $(filter-out $1,$(words x $2)),$(call to_n,$1,x $2))

PAR_COUNT :=
par: $(addprefix par-,$(call to_n,32))

jgrahamc

// loc_parser: functions to parse the textual part of a LOC record
// stored in our DNS. The key function here is parseLOCString which
// should be passed a dns.LOC and a string containing the latitude,
// longitude etc.
//
// This is an implementation of RFC 1876. Read it for background as
// the format in a dns.LOC is slightly unusual.
//
// Copyright (c) 2014 CloudFlare, Inc.

jgrahamc

# quic-cleanup.pl                                                                                               
#                                                                                                               
# When running the Google experimental quic_server it expects to find                                           
# sites to serve in /tmp/quic-data. Under that there will be a                                                  
# directory per site.                                                                                           
#                                                                                                               
# For example this was used to mirror the CloudFlare web site for                                               
# QUIC testing.                                                                                                 
#                                                                                                               
#   mkd