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String

a = "test_string";

b = "test" + "_string";

is_true = "test" == "test";
is_false = "test" == "string";

s = "abcdef"
puts(s[2])
puts(s[-2])
puts(s[:2])
puts(s[:-2])
puts(s[2:])
puts(s[-2:])
puts(s[1:-2])

s[2] = "C"
s[-2] = "E"
puts(s)

// should output
"c"
"e"
"ab"
"abcd"
"cdef"
"ef"
"bcd"
"abCdEf"

// you can also use single quotes
'test "string" with doublequotes'

// and you can scape a double quote in a double quote string
"te\"st" == 'te"st'

Literal Specific Methods​

ascii()​

Returns INTEGER|ARRAY

Returns the ascii representation of a char or string

"a".ascii()
"abc".ascii()
Output
97
[97, 98, 99]

count(STRING)​

Returns INTEGER

Counts how often a given substring occurs in the string.

downcase()​

Returns STRING

Returns the string with all uppercase letters replaced with lowercase counterparts.

downcase!()​

Returns NIL

Replaces all upcase characters with lowercase counterparts.

find(STRING)​

Returns INTEGER

Returns the character index of a given string if found. Otherwise returns -1

format(STRING|INTEGER|FLOAT|BOOLEAN|ARRAY|HASH)​

Returns STRING

Formats according to a format specifier and returns the resulting string

lines()​

Returns ARRAY

Splits the string at newline escape sequence and return all chunks in an array. Shorthand for string.split("\n").

replace(STRING, STRING)​

Returns STRING

Replaces the first string with the second string in the given string.

reverse()​

Returns STRING

Returns a copy of the string with all characters reversed.

reverse!()​

Returns NIL

Replaces all the characters in a string in reverse order.

size()​

Returns INTEGER

Returns the amount of characters in the string.

split(STRING)​

Returns ARRAY

Splits the string on a given seperator and returns all the chunks in an array. Default seperator is " "

strip()​

Returns STRING

Returns a copy of the string with all leading and trailing whitespaces removed.

strip!()​

Returns NIL

Removes all leading and trailing whitespaces in the string.

upcase()​

Returns STRING

Returns the string with all lowercase letters replaced with uppercase counterparts.

upcase!()​

Returns NIL

Replaces all lowercase characters with upcase counterparts.

Generic Literal Methods​

methods()​

Returns ARRAY

Returns an array of all supported methods names.

"test".methods()
Output
["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()
Output
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()
Output
1
0
1234
4
1234
1234
1234

to_json()​

Returns STRING|ERROR

Returns the object as json notation.

a = {"test": 1234}
a.to_json()
Output
{"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()
Output
"true"
"1234"
"10011010010"
"2322"
"1234"
"test"
"1.4"

type()​

Returns STRING

Returns the type of the object.

"test".type()
Output
"STRING"

wat()​

Returns STRING

Returns the supported methods with usage information.

true.wat()
Output
"BOOLEAN supports the following methods: to_s()"