it looks like those functions will miss their context:

exploring paths toward an economy empowering citizens with #openknowledge and #libre software: @inventaire_io is the lab - #Transition #VRM #Wikidata #JS

Sep 16, 2016

So You Want to be a Functional Programmer (Part 2)

Charles Scalfani

2.3K31

it looks like those functions will miss their context:

var parseSsn = /^\d{3}-\d{2}-\d{4}$/.exec;
var parsePhone = /^\(\d{3}\)\d{3}-\d{4}$/.exec;

phasePhone(‘whatever’)

=> TypeError: Method RegExp.prototype.exec called on incompatible receiver undefined

which can be solved with a bind:


var { exec } = Regex.prototype

var parseSsn = exec.bind( /^\d{3}-\d{2}-\d{4}$/);
var parsePhone = exec.bind(/^\(\d{3}\)\d{3}-\d{4}$/);