genpri

Source : Learn to combine RxJs sequences with super intuitive interactive diagrams

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genpri

Provider	Singleton	Instantiable	Configurable
Constant	Yes	No	No
Value	Yes	No	No
Service	Yes	No	No
Factory	Yes	Yes	No
Decorator	Yes	No?	No
Provider	Yes	Yes	Yes

Constant

genpri

                          // Let's reduce the array of arrays into a single one
const songNames = allSongs.reduce((acc, currValue) => {
                            return acc.concat(currValue);
                          }, [])
                          // Let's map it out with the seconds turned into minutes 
                          .map(song => {
                            return { ...song, duration: Math.floor(song.duration / 60) };
                          })
                          // Let's filter the ones under 3 minutes
                          .filter(song => {

genpri

SET NAMES utf8;

DROP TABLE IF EXISTS `cc_bins`;
CREATE TABLE `cc_bins` (
  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `bank_code` int(11) NOT NULL,
  `bank_name` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
  `bin_number` int(11) NOT NULL,
  `card_type` varchar(255) COLLATE utf8_unicode_ci NOT NULL,

genpri

// validation pattern
const schema = {
  first: {
    required: true
  },
  last: {
    required: true
  }
};

genpri

// === Arrays

var [a, b] = [1, 2];
console.log(a, b);
//=> 1 2


// Use from functions, only select from pattern
var foo = () => [1, 2, 3];