Methods on Values

Every value type in CColon has built-in methods that can be called with dot notation.

int methods

Method	Description	Returns
.tostring()	Convert to string representation	string
.tofloat()	Convert to float	float

var int n = 42
console.println(n.tostring())     // "42"
var float f = n.tofloat()         // 42.0

float methods

Method	Description	Returns
.tostring()	Convert to string representation	string
.toint()	Truncate to integer	int

var float pi = 3.14
console.println(pi.tostring())    // "3.14"
var int truncated = pi.toint()    // 3

Note that .toint() truncates toward zero, it does not round.

string methods

Method	Description	Returns
.length()	Number of characters	int
.tostring()	Returns the string itself	string
.toint()	Parse as integer	int
.tofloat()	Parse as float	float

var string s = "hello"
console.println(s.length().tostring())   // 5

var string num = "123"
var int parsed = num.toint()             // 123

.toint() and .tofloat() produce a runtime error if the string is not a valid number.

String indexing

Individual characters can be accessed by index:

var string word = "hello"
console.println(word[0])    // "h"
console.println(word[4])    // "o"

bool methods

Method	Description	Returns
.tostring()	Convert to "true" or "false"	string

var bool flag = true
console.println(flag.tostring())    // "true"

list methods

Method	Description	Returns
.length()	Number of elements	int
.append(v)	Add element to end	nil
.pop()	Remove and return last element	value
.tostring()	String representation	string

See Lists and Arrays for details.

array methods

Method	Description	Returns
.length()	Number of elements	int
.tostring()	String representation	string

See Lists and Arrays for details.

Chaining methods

Methods can be chained:

var int n = 42
console.println(n.tofloat().tostring())   // "42"

var list nums = [1, 2, 3]
console.println(nums.length().tostring())  // "3"