noahlt

setxkbmap -query | grep layout | sed 's/layout: *\(.*\)/\1/'

noahlt

The other day I saw this on Twitter:

zsh: 没想到吧，我还学了中文。

— Makito＠nil (@sumimakito) September 8, 2017

Makito's Tweet says "This hadn't occurred to me, and I even know Chinese." In the screenshot, [Oh My Zsh][0] has given him a Y/n prompt asking whether he wants to enable automatic updates. He has responded by typing "成", which (in this context) means "OK!". Normally I would expect this sort of command-line prompt to assume anything that's not Y, y, YES, or yes to be a negative answer, but, lo and behold, in his screenshot Oh My Zsh understands his Chinese response and begins an update! Here's a plain text transcript:

[Oh My Zsh] Would you like to check for updates? [Y/n]: 成
Updating Oh My Zsh

noahlt

OH SHIT THAT SOMETIMES HAPPENS



SAM: yo, can you help me out

CHUCK: hey what do you need

SAM: I don’t know if I told you but I recently became a camp counselor

noahlt

Python’s lru_cache is sensitive to order of keyword arguments

In case you were wondering, Python’s built-in LRU cache function decorator doesn’t cache function calls with the same keyword arguments written in a different order. That is, if you cache a function and then call it twice, with the same keyword arguments but written in a different order, on the second call you won’t get the cached result and the function will be re-run.

proof/example

Let’s construct an example. We’re interested in keyword arguments, so we’ll make our function only take keyword arguments (1). We want some side-effect to tell us whether it was a cache hit or miss, so we’ll print each keyword when we iterate over it (2). We want to cache a result, so we’ll return the sum of the values of the keyword arguments (3). Finally, we apply the lru_cache decorator to the function with a maxsize=None to let the cache grow unbounded. Putting all that together, we get:

noahlt

{
	"origin": ["#color# #animal# #os#"],
	"color": ["Blue", "Green", "Red", "Yellow", "Orange", "Maroon", "Pink", "Black", "White"],
	"animal": ["Lion", "Bear", "Seal", "Shark", "Dolphin", "Eagle", "Falcon", "Rhino", "Wolf", "Elk", "Ox", "Rabbit", "Trout"],
	"os": ["OS/2", "DOS", "RISC OS", "AmigaOS", "NeXTSTEP", "BeOS", "Plan 9", "CTOS", "CP/M", "HP-UX", "TOPS-20", "Ultrix", "Multics", "Minix", "Xinu"]
}

noahlt

package main

import "fmt"

var m = map[string]int{"a": 1, "b": 2, "c": 3}

func lookup(k string) (int, bool) {
	// Can't do this :(
	//
	//return m[k]

noahlt

// Print context of string around a point

func prctx(buf string, point int) {
	if point < 0 || point >= len(buf) {
		log.Printf("context for point: out of bounds (%d/%d)", point, len(buf))
		return
	}

	min := func(a int, b int) int {
		if a < b {

noahlt

#!/usr/bin/env bash

# A couple of handy bash functions that I have in my .bashrc:

# get_env uses ssh to copy an environment variable from a remote
# server to your current machine.  Example usage:
#
#   get_env SOME_VAR_NAME example.com
get_env () {
	VARNAME=$1

noahlt

A bit easier to read:

var installed = WindowController.getInstalledPlugins();
return {
  installedPlugins: _.intersection(conf.SUPPORTED_EDITORS, installed),
  uninstalledPlugins: _.difference(conf.SUPPORTED_EDITORS, installed),
}

noahlt

var React = require('react');
var _ = require('underscore');

// Catches errors in render() and returns null so that we don't
// break the entire React app.
var SafeReactComponent = function(classObj) {
  var originalRender = classObj.render;
  var displayName = classObj.displayName || 'unknown component';
  return React.createClass(_.extend(classObj, {
    render: function() {