joepie91

ES Modules are terrible, actually

This post was adapted from an earlier Twitter thread.

It's incredible how many collective developer hours have been wasted on pushing through the turd that is ES Modules (often mistakenly called "ES6 Modules"). Causing a big ecosystem divide and massive tooling support issues, for... well, no reason, really. There are no actual advantages to it. At all.

It looks shiny and new and some libraries use it in their documentation without any explanation, so people assume that it's the new thing that must be used. And then I end up having to explain to them why, unlike CommonJS, it doesn't actually work everywhere yet, and may never do so. For example, you can't import ESM modules from a CommonJS file! (Update: I've released a module that works around this issue.)

And then there's Rollup, which apparently requires ESM to be u

xtuc

Path

remove

Removes the current path.

Example

Visistor:

telbiyski

sudo apt-get update
sudo apt-get install build-essential chrpath libssl-dev libxft-dev -y
sudo apt-get install libfreetype6 libfreetype6-dev -y
sudo apt-get install libfontconfig1 libfontconfig1-dev -y
cd ~
export PHANTOM_JS="phantomjs-2.1.1-linux-x86_64"
wget https://github.com/Medium/phantomjs/releases/download/v2.1.1/$PHANTOM_JS.tar.bz2
sudo tar xvjf $PHANTOM_JS.tar.bz2
sudo mv $PHANTOM_JS /usr/local/share
sudo ln -sf /usr/local/share/$PHANTOM_JS/bin/phantomjs /usr/local/bin

avdg

/* ebnf file for es 6 - MAY CONTAIN ERRORS / DISAMBIGUITY */
Grammer::= Statement

/* Lexical grammer */
SourceCharacter                        ::= #x0000-#x10FFFF
InputElementDiv                        ::= WhiteSpace | LineTerminator | Comment | CommonToken | DivPunctuator | RightBracePunctuator
InputElementRegExp                     ::= WhiteSpace | LineTerminator | Comment | CommonToken | RightBracePunctuator | RegularExpressionLiteral
InputElementRegExpOrTemplateTail       ::= WhiteSpace | LineTerminator | Comment | CommonToken | RegularExpressionLiteral | TemplateSubstitutionTail
InputElementTemplateTail               ::= WhiteSpace | LineTerminator | Comment | CommonToken | DivPunctuator | TemplateSubstitutionTail
WhiteSpace                             ::= "<TAB>" | "<VT>" | "<FF>" | "<SP>" | "<NBSP>" | "<ZWNBSP>" | "<USP>"

jaawerth

'use strict';

/*
 * run promises in sequence, return an array of results.
 * Returns a promise that resolves to an array of results, where funcs[i]() -> results[i]
*/
function asyncSeries(...funcs) {
  return aggregate([], funcs);
}

chaitanyagupta

Reader Macros in Common Lisp

This post also appears on lisper.in.

Reader macros are perhaps not as famous as ordinary macros. While macros are a great way to create your own DSL, reader macros provide even greater flexibility by allowing you to create entirely new syntax on top of Lisp.

Paul Graham explains them very well in [On Lisp][] (Chapter 17, Read-Macros):

The three big moments in a Lisp expression's life are read-time, compile-time, and runtime. Functions are in control at runtime. Macros give us a chance to perform transformations on programs at compile-time. ...read-macros... do their work at read-time.

rxaviers

People

:bowtie:	😄 :smile:	😆 :laughing:
😊 :blush:	😃 :smiley:	☺️ :relaxed:
😏 :smirk:	😍 :heart_eyes:	😘 :kissing_heart:
😚 :kissing_closed_eyes:	😳 :flushed:	😌 :relieved:
😆 :satisfied:	😁 :grin:	😉 :wink:
😜 :stuck_out_tongue_winking_eye:	😝 :stuck_out_tongue_closed_eyes:	😀 :grinning:
😗 :kissing:	😙 :kissing_smiling_eyes:	😛 :stuck_out_tongue:

WizKid

def removecomments(s):
    inCommentSingle = False
    inCommentMulti = False
    inString = False

    t = []
    l = len(s)

    i = 0
    fromIndex = 0

remy

var easing = {
  elastic: function(pos){return -1*Math.pow(4,-8*pos)*Math.sin((pos*6-1)*(2*Math.PI)/2)+1},
  swingFromTo:function(pos){var s=1.70158;return((pos/=0.5)<1)?0.5*(pos*pos*(((s*=(1.525))+1)*pos-s)):0.5*((pos-=2)*pos*(((s*=(1.525))+1)*pos+s)+2)},
  swingFrom:function(pos){var s=1.70158;return pos*pos*((s+1)*pos-s)},
  swingTo:function(pos){var s=1.70158;return(pos-=1)*pos*((s+1)*pos+s)+1},
  bounce:function(pos){if(pos<(1/2.75)){return(7.5625*pos*pos)}else{if(pos<(2/2.75)){return(7.5625*(pos-=(1.5/2.75))*pos+0.75)}else{if(pos<(2.5/2.75)){return(7.5625*(pos-=(2.25/2.75))*pos+0.9375)}else{return(7.5625*(pos-=(2.625/2.75))*pos+0.984375)}}}},
  bouncePast:function(pos){if(pos<(1/2.75)){return(7.5625*pos*pos)}else{if(pos<(2/2.75)){return 2-(7.5625*(pos-=(1.5/2.75))*pos+0.75)}else{if(pos<(2.5/2.75)){return 2-(7.5625*(pos-=(2.25/2.75))*pos+0.9375)}else{return 2-(7.5625*(pos-=(2.625/2.75))*pos+0.984375)}}}},
  easeFromTo:function(pos){if((pos/=0.5)<1){return 0.5*Math.pow(pos,4)}return -0.5*((pos-=2)*Math.po