ChaiScript_Language Namespace Reference

Items in this namespace exist in the ChaiScript language runtime. They are not part of the C++ API. More...

Classes
class	Object
	Generic concept of a value in ChaiScript. More...
class	Map_Pair
	Item returned from a Range object from a Map. More...
class	Map
	Maps strings to Objects. More...
class	Container
	A concept implemented by string, Vector and Map. It is convertible to Range, default constructable and back_insertable. More...
class	string
	ChaiScript representation of std::string. It is an std::string but only some member are exposed to ChaiScript. More...
class	Range
	A concept in ChaiScript that is implemented by string, Vector and Map. It provides easy iteration over the elements in a container. More...
class	Const_Range
	A concept in ChaiScript that is implemented by string, Vector and Map. It provides easy iteration over the elements in a container. Contained values are const. More...
class	Vector
	A vector of Objects. More...
class	Type_Info
class	Function
	Represents a function object in ChaiScript. More...

Functions
string	to_string (Object o)
	Converts o into a string.
void	puts (Object o)
	Prints o to the terminal, without a trailing carriage return. Applies conversions to string automatically.
void	print (Object o)
	Prints o to the terminal, with a trailing carriage return. Applies conversions to string automatically.
class ChaiScript_Language::Function	max (Object a, Object b)
	Returns the max of a or b. Requires that operator>(a, b) exists Equivalent to.
Object	min (Object a, Object b)
	Returns the min of a or b. Requires that operator<(a, b) exists.
bool	even (Object x)
	Returns true if x is an even integer.
void	for_each (Range c, Function f)
	Applies the function f over each element in the Range c.
Object	map (Range c, Function f)
	Applies f over each element in the Range c, joining all the results.
Object	foldl (Range c, Function f, Object initial)
	Starts with the initial value and applies the function f to it and the first element of the Range c. The result is then applied to the second element, and so on until the elements are exhausted.
Numeric	sum (Range c)
	Returns the sum total of the values in the Range c.
Numeric	product (Range c)
	Returns the product of the value in the Range c.
Object	take (Range c, int num)
	Takes num elements from the Range c, returning them.
Object	take_while (Range c, Function f)
	Takes elements from the Range c that match function f, stopping at the first non-match, returning them as a new Vector.
Object	drop (Range c, int num)
	Drops num elements from the Range c, returning the remainder.
Object	drop_while (Range c, Function f)
	Drops elements from the Range c that match f, stopping at the first non-match, returning the remainder.
Object	reduce (Range c, Function f)
	Similar to foldl, this takes the first two elements as its starting values for f. This assumes Range c has at least 2 elements.
Object	filter (Container c, Function f)
	Takes elements from Container c that match function f, return them.
string	join (Range c, string delim)
	Joins the elements of the Range c into a string, delimiting each with the delim string.
Container	reverse (Container c)
	Returns the contents of the Container c in reversed order.
Vector	generate_range (Object x, Object y)
	Generates a new Vector filled with values starting at x and ending with y.
Object	concat (Range x, Range y)
	Returns a new Range with x and y concatenated.
Vector	collate (Object x, Object y)
	Returns a new Vector with x and y as its values.
Vector	zip_with (Function f, Range x, Range y)
	Applies f to elements of x and y, returning a new Vector with the result of each application.
Vector	zip (Range x, Range y)
	Collates elements of x and y, returning a new Vector with the result.
bool	call_exists (Function f,...)
	returns true if there exists a call to the Function f that takes the given parameters
Range	retro (Range)
	Reverses a Range object so that the elements are accessed in reverse.
Const_Range	retro (Const_Range)
	Reverses a Const_Range object so that the elements are accessed in reverse.
void	throw (Object)
	Raises the given object as an exception. Any type of object can be thrown.

Detailed Description

Items in this namespace exist in the ChaiScript language runtime. They are not part of the C++ API.

This file is not technically part of the ChaiScript API. It is used solely for generating Doxygen docs regarding the ChaiScript standard runtime library.

Function Documentation

call_exists()

bool ChaiScript_Language::call_exists	(	Function	f,
			... )

returns true if there exists a call to the Function f that takes the given parameters

Example:

eval> call_exists(`+`, 1, 2)
true

collate()

Vector ChaiScript_Language::collate	(	Object	x,
		Object	y )

Returns a new Vector with x and y as its values.

Example:

eval> collate(1, 2)
[1, 2]

concat()

Object ChaiScript_Language::concat	(	Range	x,
		Range	y )

Returns a new Range with x and y concatenated.

Example:

eval> concat([1, 2, 3], [4, 5, 6])
[1, 2, 3, 4, 5, 6]

drop()

Object ChaiScript_Language::drop	(	Range	c,
		int	num )

Drops num elements from the Range c, returning the remainder.

Example:

eval> drop([1, 2, 3, 4], 2)
[3, 4]

Returns

A container of the same type that was passed in

drop_while()

Object ChaiScript_Language::drop_while	(	Range	c,
		Function	f )

Drops elements from the Range c that match f, stopping at the first non-match, returning the remainder.

Example:

eval> drop_while([1, 2, 3], odd)         
[2, 3]

even()

bool ChaiScript_Language::even

(

Object

x

)

Returns true if x is an even integer.

Returns true if x is an odd integer.

Will also work on any non-integer type for which an operator%(x, int) exists

Example:

eval> even(4)
true

Will also work on any non-integer type for which an operator%(x, int) exists

Example:

eval> odd(4)
false 

filter()

Object ChaiScript_Language::filter	(	Container	c,
		Function	f )

Takes elements from Container c that match function f, return them.

Example:

eval> filter([1, 2, 3, 4], odd)
[1, 3]

foldl()

Object ChaiScript_Language::foldl	(	Range	c,
		Function	f,
		Object	initial )

Starts with the initial value and applies the function f to it and the first element of the Range c. The result is then applied to the second element, and so on until the elements are exhausted.

Example:

eval> foldl([1, 2, 3, 4], `+`, 0)
10

for_each()

void ChaiScript_Language::for_each	(	Range	c,
		Function	f )

Applies the function f over each element in the Range c.

Example:

eval> for_each([1, 2, 3], print)
1
2
3

generate_range()

Vector ChaiScript_Language::generate_range	(	Object	x,
		Object	y )

Generates a new Vector filled with values starting at x and ending with y.

Works on types supporting operator<=(x, y) and operator++(x)

Example:

eval> generate_range(1, 10)
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

join()

string ChaiScript_Language::join	(	Range	c,
		string	delim )

Joins the elements of the Range c into a string, delimiting each with the delim string.

Example:

eval> join([1, 2, 3], "*") 
1*2*3

map()

Object ChaiScript_Language::map	(	Range	c,
		Function	f )

Applies f over each element in the Range c, joining all the results.

Example:

eval> map([1, 2, 3], odd)
[true, false, true]

max()

class ChaiScript_Language::Function ChaiScript_Language::max	(	Object	a,
		Object	b )

Returns the max of a or b. Requires that operator>(a, b) exists Equivalent to.

return a>b?a:b;

Example:

eval> max(4, 10)
10

min()

Object ChaiScript_Language::min	(	Object	a,
		Object	b )

Returns the min of a or b. Requires that operator<(a, b) exists.

Equivalent to

return a<b?a:b;

Example:

eval> min(4, 10)
4

print()

void ChaiScript_Language::print

(

Object

o

)

Prints o to the terminal, with a trailing carriage return. Applies conversions to string automatically.

eval> print("hello")
hello
eval>

See also

to_string

puts

product()

Numeric ChaiScript_Language::product

(

Range

c

)

Returns the product of the value in the Range c.

Example:

eval> product([1, 2, 3, 4])
24

Equivalent to:

foldl(c, `*`, 1.0);

puts()

void ChaiScript_Language::puts

(

Object

o

)

Prints o to the terminal, without a trailing carriage return. Applies conversions to string automatically.

eval> puts("hi, "); puts("there")
hi, thereeval>

See also

to_string

print

reduce()

Object ChaiScript_Language::reduce	(	Range	c,
		Function	f )

Similar to foldl, this takes the first two elements as its starting values for f. This assumes Range c has at least 2 elements.

Example:

eval> reduce([1, 2, 3, 4], `+`)
10

retro() [1/2]

Const_Range ChaiScript_Language::retro

(

Const_Range

)

Reverses a Const_Range object so that the elements are accessed in reverse.

retro() [2/2]

Range ChaiScript_Language::retro

(

Range

)

Reverses a Range object so that the elements are accessed in reverse.

reverse()

Container ChaiScript_Language::reverse

(

Container

c

)

Returns the contents of the Container c in reversed order.

Example:

eval> reverse([1, 2, 3, 4, 5, 6, 7])
[7, 6, 5, 4, 3, 2, 1]

sum()

Numeric ChaiScript_Language::sum

(

Range

c

)

Returns the sum total of the values in the Range c.

Example:

eval> sum([1, 2, 3, 4])
10

Equivalent to:

foldl(c, `+`, 0.0);

take()

Object ChaiScript_Language::take	(	Range	c,
		int	num )

Takes num elements from the Range c, returning them.

Example:

eval> take([1, 2, 3, 4], 2)
[1, 2]

Returns

A container of the same type that was passed in

take_while()

Object ChaiScript_Language::take_while	(	Range	c,
		Function	f )

Takes elements from the Range c that match function f, stopping at the first non-match, returning them as a new Vector.

Example:

eval> take_while([1, 2, 3], odd)
[1]

Returns

A container of the same type that was passed in

throw()

void ChaiScript_Language::throw

(

Object

)

Raises the given object as an exception. Any type of object can be thrown.

Example:

eval> try { throw(1); } catch (e) { print("Exception caught: " + to_string(e)); }
Exception caught: 1

See also

try

to_string()

string ChaiScript_Language::to_string

(

Object

o

)

Converts o into a string.

eval> to_string(3).is_type("string") <br>
true<br>

zip()

Vector ChaiScript_Language::zip	(	Range	x,
		Range	y )

Collates elements of x and y, returning a new Vector with the result.

Example:

eval> zip([1, 2, 3], [4, 5, 6])
[[1, 4], [2, 5], [3, 6]]

zip_with()

Vector ChaiScript_Language::zip_with	(	Function	f,
		Range	x,
		Range	y )

Applies f to elements of x and y, returning a new Vector with the result of each application.

Example:

eval> zip_with(`+`, [1, 2, 3], [4, 5, 6])
[5, 7, 9]