justanotherdot

fn main() {
    let xs = vec![1];
    let ys = xs.clone();
    let clos = move || xs;
    assert_eq!(&(clos.clone())(), &ys);
    assert_eq!(&clos(), &ys);
}

justanotherdot

fn main() {
    let xs = vec![1, 2, 3];
    let ys = vec![6, 5, 4];
    let mut i = 0;
    let mut j = 0;
    let iter = std::iter::from_fn(|| {
        if i >= xs.len() {
            return None;
        }
        let rv = Some((xs[i], ys[j]));

justanotherdot

#!/usr/bin/awk -f

# This program is a copy of guff, a plot device. https://github.com/silentbicycle/guff
# My copy here is written in awk instead of C, has no compelling benefit.
# Public domain. @thingskatedid

# Run as awk -v x=xyz ... or env variables for stuff?
# Assumptions: the data is evenly spaced along the x-axis

# TODO: moving average

justanotherdot

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

justanotherdot

#!/bin/sh -eu

echo "$(cd "$(dirname "$1")"; pwd)/$(basename "$1")"

justanotherdot

#!/bin/sh -eu

FROM_COMMIT="$1"
TO_COMMIT="$2"
git bisect start "$FROM_COMMIT" "$TO_COMMIT"
git bisect run ./bisect-test && git bisect reset

justanotherdot

#!/bin/sh -eu

echo '=== Changing `git init` to default to "main" branch.'
echo "+ Updating ~/.gitconfig"
cat <<'EOF' >> ~/.gitconfig
[init]
    templateDir = ~/.config/git/template/
EOF

ROOT_TEMPLATE_DIR=""

justanotherdot

#!/bin/sh -eux

# usage:
#   cd into where you keep your git repositories then run this script.
#   if you want to only update a single repository, comment out the loop
#   below and calling this script from within the project you want changed.

update() {
  git stash
  # If you use something like GitHub, you will also

justanotherdot

#!/bin/sh -eu

announce() {
  S="$1"
  S_LEN="$(echo $S | wc -m)"
  TERM_WIDTH="$(tput cols)"
  TERM_WIDTH="$(( TERM_WIDTH - 6 ))"
  printf "===%*s%*s===\n" $(( (TERM_WIDTH + S_LEN) / 2 )) "$S" $(( (TERM_WIDTH - S_LEN) / 2 )) ""
}

justanotherdot

#!/bin/sh -eu

FILTER="${FILTER:="."}"
TOOLCHAIN_BK="$(rustup toolchain list | rg default | awk '{print $1}')"
TOOLCHAIN_KIND_BK="$(echo "$TOOLCHAIN_BK" | rg -o '^(stable|nightly)')"
if [ "$TOOLCHAIN_KIND_BK" != "stable" ]; then
  rustup install stable
  rustup default stable
fi