Wiki: Rockstar

• Replace is with 's (removing the leading whitespace)
• n's- is the shortest way to initialize a variable to one.
• Some operators like + take multiple arguments, so you can abuse it like s+" "i instead of s+" "+i
• turn up/turn down to round
  • To get x remainder y: t = x/y, turn down t, x-t*y is the remainder
  • Or to just check for divisibility, you can use turn up instead
• In rock x with y, the with is unneeded, rock x y works
• cut can split by an int, like cut "a0b0c"with 0into x
• Steal stuff from Java: off java,math play BigDecimal
• means to alias: e.g. you use taking a lot to call a function, use t means taking and then use t

Rounding

• x+8e15-8e15 to round to the nearest integer
• x+8e15-8e15is x to check if x is an integer
• x/y+8e15-8e15is x/y to check if x is divisible by y
• x/y*"a"y's x*"a" does the same, but slower

Array operators

push x 2,3,4,5
t = x+6 (t = 2,3,4,5,6)
t = 1+x (t = 1,2,3,4,5)
t = x+x (t = 2,3,4,5,2,3,4,5)
t = x-2 (removes 2nd element: t = 2,3,5)

Any other arithmetic operation converts the array to its length:

t = 0-x (t = -4)

For each

while v
say pop v

is one byte shorter than

while v as x
say x

Into

t = x
cut t

is one byte shorter than

cut x into t