lunasorcery

/* So how does this work?
I'm using ANSI escape sequences to control the behavior of the terminal while
cat is outputting the text. I deliberately place these control sequences inside
comments so the C++ compiler doesn't try to treat them as code.*/
//
/*The commands in the fake code comment move the cursor to the left edge and
clear out the line, allowing the fake code to take the place of the real code.
And this explanation uses similar commands to wipe itself out too. */
//
#include <cstdio>

rauschma

Visual Studio Code shortcuts I use often

Navigation

Sidebar:

• Cmd-Shift-F: search
• Cmd-Shift-E: files

Navigating in current editor:

vcarl

I bundled these up into groups and wrote some thoughts about why I ask them!

If these helped you, I'd love to hear about it!! I'm on twitter @vcarl_ or send me an email carl.vitullo@gmail.com

Onboarding and the workplace

https://blog.vcarl.com/interview-questions-onboarding-workplace/

• How long will it take to deploy my first change? To become productive? To understand the codebase?
• What kind of equipment will I be provided? Will the company pay/reimburse me if I want something specific?

rauschma

Strings

String.prototype.*

None of the string methods modify this – they always return fresh strings.

• charAt(pos: number): string ^ES1

  Returns the character at index pos, as a string (JavaScript does not have a datatype for characters). str[i] is equivalent to str.charAt(i) and more concise (caveat: may not work on old engines).

adamseckel

import styled from 'emotion/react';
import {css} from 'emotion';

const justifyMap = {
  start: 'flex-start',
  end: 'flex-end',
  'space-between': 'space-between',
  'space-around': 'space-around'
};

elmasse

 sudo chown -R $(whoami) $(npm config get prefix)/{lib/node_modules,bin,share}

getify

Parens And Performance

Years ago, some smart folks that worked on JS engines realized that not all JS that's loaded into a page/app initially is needed right away. They implemented JIT to optimize this situation.

JIT means Just-In-Time, which means essentially that the engine can defer processing (parsing, compiling) certain parts of a JS program until a later time, for example when the function in question is actually needed. This deferral means the engine is freer to spend the important cycles right now on the code that's going to run right now. This is a really good thing for JS performance.

Some time later, some JS engine devs realized that they needed to get some hints from the code as to which functions would run right away, and which ones wouldn't. In technical speak, these hints are called heuristics.

So they realized that one very common pattern for knowing that a function was going to run right away is if the first character before the function keyword was a (, because that usually m

a0viedo

I wrote a bunch of utility helpers for graphing data with pie charts, bar charts, scatter plots and histograms.

It reutilices many examples from [d3.org][d3.org], so many that I lost track of them all. I have only tested on d3's v3.

• Bar charts:
  • Properties like width, height, X and Y axis domains, X and Y axis transforms, tips and margins can be passed through a configuration object
  • tips
  • helper to update graph from new data through animations
  • opt-in interpolation
• Pie charts:

emiloberg

import React from 'react';
import { Sector, Cell, PieChart, Pie } from 'recharts';

const GaugeChart = () => {
        const width = 500;
        const chartValue = 180;
        const colorData = [{
                value: 40, // Meaning span is 0 to 40
                color: '#663399'
            }, {

neoeinstein

module Auth0
  ( AuthenticationState(..), AuthenticationError, AuthenticationResult
  
  , Options, defaultOpts
  
  , LoggedInUser, UserProfile, Token
  
  , showLock, showLockSignal
  , mapResult
  ) where