Overview

1 6 / 3
2 5 - 1
3 1+2^3*2

1let a = (2+3)*5
2print "a=" a
3
4let b,c = 1,2     # multi assign supported
5println b c
6println(b,c)      # also works

 1let arr = [10, "a", True]
 2let arr_b = 0..10
 3
 4# index
 5arr[0]       # → 10
 6arr_b.1
 7
 8# slice
 9arr[1:3]     # → ["a", True]（left close right open）
10arr[::2]     # → [10, True]（step is 2）
11arr[-1:]      # → True（support negative slice）
12
13# nested
14[1,24,5,[5,6,8]][3][1]     # 6

1let dict = {name: "Alice", age: 30}
2
3# index
4dict[name]
5dict.name

1if a>0 && b==0 {
2   print OK
3}else{
4   print BAD
5}

1match a {
2 10 => print "ten",
3 20 => print "twenty"     # comma is optional
4 _ => print other
5}

1let addone = x -> x+1
2let add = (x,y) -> x+y
3
4addone(2)
5add(3,4)

1fn add(x,y=0,*other){
2 x+y+len(other)
3}
4
5add(3)
6add(3,4)
7add(3,4,5,6,7)

1let e = x -> print x
23 / 0 ?: e               # you could use a function to catch and deel with errors
3
43 / 0 ?.                 # aslo, you may like to ignore it.
53 / 0 ??                 # aslo, you may like to display it on stderr.
63 / 0 ?+                 # aslo, you may like to merge it to stdout.
73 / 0 ?!                 # aslo, you may like to use error as result, useful to pipe errors out.
8
93 / 0 ?: 0               # give a default value while failing

1
2ls -l | From.cmd() | where( int C4 > 4000 )            # use normal ls command
3
4let thead = [mode,i,user,group,size,mday,mtime,name]
5ls -l | From.cmd(thead)  | where(int size > 400) | select([name,size,mtime])      #parse with table head
6
7Fs.ls -l | where(mode==420) | select(name)              # use builtin ls