Deriving a new Array from an existing Array:
['■','●','▲'].slice(1, 3) ⟼ ['●','▲']
['■','●','■'].filter(x => x==='■') ⟼ ['■','■']
['▲','●'].map(x => x+x) ⟼ ['▲▲','●●']
['▲','●'].flatMap(x => [x,x]) ⟼ ['▲','▲','●','●']| [{ | |
| "Note": "The first two digits (ranging from 10–43) correspond to the province, while the last two digits correspond either to the city/delivery zone (range 01–50) or to the district/delivery zone (range 51–99). Afghanistan Postal code lookup", | |
| "Country": "Afghanistan", | |
| "ISO": "AF", | |
| "Format": "NNNN", | |
| "Regex": "^\\d{4}$" | |
| }, { | |
| "Note": "With Finland, first two numbers are 22.", | |
| "Country": "Åland Islands", | |
| "ISO": "AX", |
| # See list of docker virtual machines on the local box | |
| $ docker-machine ls | |
| NAME ACTIVE URL STATE URL SWARM DOCKER ERRORS | |
| default * virtualbox Running tcp://192.168.99.100:2376 v1.9.1 | |
| # Note the host URL 192.168.99.100 - it will be used later! | |
| # Build an image from current folder under given image name | |
| $ docker build -t gleb/demo-app . |