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5.1.2 Execution environments

p1 Two execution environments are defined: freestanding and hosted. The implementation shall provide a freestanding environment, and may also provide a hosted environment.

p2 In both environments, all of the facilities of the language (clause 6) are available. In a hosted environment, all of the facilities of the library (clause 7) are also available. In a freestanding environment, the set of library facilities

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pub fn deserialize(bytes: &[u8]) -> Result<Self, AlchemistError> {
    let key_length = bytestou32(&bytes[0..4]) as usize;
    let value_length = bytestou32(&bytes[4..8]) as usize;
    let maybe_key = String::from_utf8(bytes[8 .. 8 + key_length].to_vec());
    let maybe_value = String::from_utf8(bytes[8 + key_length .. 8 + key_length + value_length].to_vec())
    match (maybe_key, maybe_value) {
        (Ok(ref key), Ok(ref value)) => Ok(Self::new(key, value)),
        _ => Err(AlchemistError::DeserializationFailed)
    }
}

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# Get nwquantbyage.csv from https://dqydj.com/wp-content/uploads/2015/03/nwquantbyage.csv
library(reshape2)
library(ggplot2)
library(scales)
library(viridis)

biexp2_trans <- function(lim = 100, decade.size = lim)
{
     trans <- function(x){
         ifelse(abs(x) <= lim,

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#! /usr/bin/env python

# jobspawntest.py - experimental subprocess.Popen wrapper that kills
# descendants on subprocess exit.  Windows testing needed.

# Copyright 2015 Zack Weinberg <zackw@panix.com>
# Copying and distribution of this file, with or without modification,
# are permitted in any medium without royalty provided the copyright
# notice and this notice are preserved.  This file is offered as-is,
# without any warranty.

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Which Unicode characters does Python's regular expressions' \w escape match?

It appears that the intent of UNICODE \w in both Python 2 and 3 is to match every character in Unicode general categories L* and N*, plus U+005F ('_'). However, in 2.7 the re module's idea of the Unicode database is a little bit out of sync with the unicodedata module, such that four astral characters in category Nl are not matched when they should be:

• [U+012432][] CUNEIFORM NUMERIC SIGN SHAR2 TIMES GAL PLUS DISH

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#! /usr/bin/Rscript

suppressPackageStartupMessages({
    library(ggplot2)
    library(scales)
    library(grid)
})


# Data from https://en.wikipedia.org/wiki/Unicode#Versions

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Keybase proof

I hereby claim:

• I am zackw on github.
• I am zackw (https://keybase.io/zackw) on keybase.
• I have a public key whose fingerprint is 82F8 54F3 CE73 174B 8B63 1740 91FC C32B 6769 AA64

To claim this, I am signing this object:

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% This is a visually redesigned version of a table from “Authenticated
% encryption: Relations among notions and analysis of the generic
% composition paradigm.” by Mihir Bellare and Chanathip Namprempre
% (ASIACRYPT 2000). The content is entirely theirs.
% I (Zachary Weinberg) disclaim any copyright interest I might have in
% this redesigned version.
\documentclass[10pt]{article}
\usepackage[letterpaper,margin=0.5in]{geometry}
\usepackage{microtype}
\usepackage{pxfonts}