Compare to JS

Hello world

JavaScript	F-Flat
console.log("Hello World!")	"Hello World!" println

Literals

JavaScript	F-Flat
3	3
3.1415	3.1415
0x0F	0x0F
no complex numbers	i
'Hello world!'	'Hello world!' (doesn't support unicode escapes)
"\uD83D\uDE80"	"\uD83D\uDE80" (supports unicode escapes)
`3 === ${1+2}`	`3 === $(1 2 +)`
true	true
[1,2,3]	[1 2 3] (commas are options)

Arrays / Lists

JavaScript	F-Flat
[3,4]	[ 3 4 ]
[3,4][0]	[ 3 4 ] 0 @

Objects / Records

JavaScript	F-Flat
{ x: 3, y: 4 }	{ x: 3, y: 4 } (commas are options)
({ x: 3, y: 4 }).x	{ x: 3, y: 4 } x: @

Functions

JavaScript	F-Flat
1 + 2	1 2 +
() => true	[ true ]
(x,y) => x + y	[ + ]
function add(x,y) { return x + y; }	add: [ + ] ;
Math.max(3, 4)	3 4 max
Math.min(1, Math.pow(2, 4))	1 2 4 ^ min
[1,2,3].map(Math.sqrt)	[1 2 3] sqrt: map
[{ x: 3, y: 4 }, ... ].map(p => p.x)	[{ x: 3 y: 4 } ... ] [ @x ] map

Control Flow

JavaScript	F-Flat
3 > 2 ? '😺' : '🐶'	3 2 > '😺' '🐶' choose

Strings

JavaScript	F-Flat
'abc' + '123'	'abc' '123' +
'abc'.length	'abc' length
'abc' + 123	'abc' 123 +

Others

JavaScript	F-Flat
var n = 42	N/A