Array
a = [1, 2, 3, 4, 5]
puts(a[2])
puts(a[-2])
puts(a[:2])
puts(a[:-2])
puts(a[2:])
puts(a[-2:])
puts(a[1:-2])
// should output
[1, 2]
[1, 2, 3]
[3, 4, 5]
[4, 5]
[2, 3]
[1, 2, 8, 9, 5]
Literal Specific Methods​
first()​
Returns
STRING|ARRAY|HASH|BOOLEAN|INTEGER|NIL|FUNCTION|FILE
Returns the first element of the array. Shorthand for array[0]
["a", "b", 1, 2].first()
"a"
include?(STRING|ARRAY|HASH|BOOLEAN|INTEGER|NIL|FILE)​
Returns
BOOLEAN
Returns true or false wether the array contains the given element
[1,2,3].include?(4)
[1,2,3].include?(3)
false
true
index(STRING|ARRAY|HASH|BOOLEAN|INTEGER|NIL|FILE)​
Returns
INTEGER
Returns the index of the given element in the array if found. Otherwise return -1.
["a", "b", 1, 2].index(1)
2
join(STRING)​
Returns
STRING
last()​
Returns
STRING|ARRAY|HASH|BOOLEAN|INTEGER|NIL|FUNCTION|FILE
Returns the last element of the array.
["a", "b", 1, 2].last()
2
reverse()​
Returns
ARRAY
Reverses the elements of the array
["a", "b", 1, 2].reverse()
[2, 1, "b", "a"]
size()​
Returns
INTEGER
Returns the amount of elements in the array.
["a", "b", 1, 2].size()
4
slices(INTEGER)​
Returns
ARRAY
Returns the elements of the array in slices with the size of the given integer
[1,2,3,4,5,6,7,8].slices(3)
[[1, 2, 3], [4, 5, 6], [7, 8]]
sort()​
Returns
ARRAY
Sorts the array if it contains only one type of STRING, INTEGER or FLOAT
[3.4, 3.1, 2.0].sort()
[2.0, 3.1, 3.4]
sum()​
Returns
INTEGER
uniq()​
Returns
ARRAY|ERROR
Returns a copy of the array with deduplicated elements. Raises an error if a element is not hashable.
["a", 1, 1, 2].uniq()
[1, 2, "a"]
pop()​
Returns
STRING|ARRAY|HASH|BOOLEAN|INTEGER|NIL|FUNCTION|FILE
Removes the last element of the array and returns it.
a = [1,2,3]
a.pop()
a
[1, 2, 3]
3
[1, 2]
push(STRING|ARRAY|HASH|BOOLEAN|INTEGER|NIL|FUNCTION|FILE)​
Returns
NIL
Adds the given object as last element to the array.
a = [1,2,3]
a.push("a")
a
[1, 2, 3]
nil
[1, 2, 3, "a"]
Generic Literal Methods​
methods()​
Returns
ARRAY
Returns an array of all supported methods names.
"test".methods()
["upcase", "find", "format", "reverse", "split", "replace", "strip!", "count", "reverse!", "lines", "downcase!", "upcase!", "size", "strip", "downcase"]
to_f()​
Returns
FLOAT
If possible converts an object to its float representation. If not 0.0 is returned.
1.to_f()
"1.4".to_f()
nil.to_f()
1.0
1.4
0.0
to_i(INTEGER)​
Returns
INTEGER
If possible converts an object to its integer representation. If not 0 is returned.
true.to_i()
false.to_i()
1234.to_i()
"4".to_i()
"10011010010"to_i(2)
"2322".to_i(8)
"0x2322".to_i()
1
0
1234
4
1234
1234
1234
to_json()​
Returns
STRING|ERROR
Returns the object as json notation.
a = {"test": 1234}
a.to_json()
{"test": 1234}
"{\"test\":1234}"
to_s(INTEGER)​
Returns
STRING
If possible converts an object to its string representation. If not empty string is returned.
true.to_s()
1234.to_s()
1234.to_s(2)
1234.to_s(8)
1234.to_s(10)
"test".to_s()
1.4.to_s()
"true"
"1234"
"10011010010"
"2322"
"1234"
"test"
"1.4"
type()​
Returns
STRING
Returns the type of the object.
"test".type()
"STRING"
wat()​
Returns
STRING
Returns the supported methods with usage information.
true.wat()
"BOOLEAN supports the following methods: to_s()"