This document provides documentation on Ring programming language functions from the stdlib library. It describes functions for input/output like print(), puts(), getstring(), mathematical functions like factorial(), fibonacci(), type checking functions like isprime(), and more. Examples are given showing how to use each function.

1. Ring Documentation, Release 1.8
See nl + "FindClass: " +" "+ cValue + nl + nl
for i = 1 to len(classList)
result = getattribute( classList[i], classMember )
See "Result-Attr: " + i +" "+ result +nl
if result = cValue
j = i
ok
next
return j
###--------------------------------------
class company position name symbol
Output:
Pos: 1 | 3 | Mahmoud | MHD |
Pos: 2 | 2 | Bert | BRT |
Pos: 3 | 1 | Ring | RNG |
FindClass: MHD
Result-Attr: 1 MHD
Result-Attr: 2 BRT
Result-Attr: 3 RNG
1
44.27 setattribute() function
We can set the object attribute value using the setattribute() function
Syntax:
SetAttribute(oObject,cAttributeName,Value)
Example:
o1 = new person
setattribute(o1,"cName","Mahmoud")
setattribute(o1,"nSalary",1000000)
setattribute(o1,"aColors",["white","blue","yellow"])
see o1
see o1.aColors
Class Person
cName
nSalary
aColors
Output:
cname: Mahmoud
nsalary: 1000000.000000
44.27. setattribute() function 351

2. Ring Documentation, Release 1.8
acolors: List...
white
blue
yellow
44.28 mergemethods() Function
We can share methods between classes without inheritance using the MergeMethods() function
This function merge class methods to another class.
Syntax:
MergeMethods(cClassNameDestination,cClassNameSource)
Example:
mergemethods("count","share")
mergemethods("count2","share")
o1 = new count { test() }
o1 = new count2 { test() }
Class Share
func one
see "one" + nl
func two
see "two" + nl
func three
see "three" + nl
Class Display
Func printline
see copy("*",20) + nl
Class Count from Display
Func test
printline()
one()
two()
three()
printline()
Class Count2 from Display
Func test
three()
two()
one()
printline()
Output:
********************
one
two
three
********************
44.28. mergemethods() Function 352

3. Ring Documentation, Release 1.8
three
two
one
********************
44.29 packagename() Function
We can know the package name of the latest sucessful import command using the packagename() function
Syntax:
packagename() --> Returns the package name of the latest sucessful import
Example:
load "weblib.ring"
import System.web
see packagename() # system.web
44.29. packagename() Function 353

4. CHAPTER
FORTYFIVE
STDLIB FUNCTIONS
In this chapter we are going to learn about functions in the stdlib.ring
Before using the functions in the library, We must load the library first
load "stdlib.ring"
Instead of using stdlib.ring we can use stdlibcore.ring
Using stdlibcore.ring we can use the StdLib functions (Without Classes)
This is useful when developing standalone console applications
Because using stdlib.ring (functions & classes) will load libraries like RingLibCurl, RingOpenSSL, etc.
45.1 Puts() function
print the value then print new line (nl)
Syntax:
puts(expr)
Example:
Load "stdlib.ring"
Puts("Hello, World!")
45.2 Print() function
print string - support n,t and r
Also we can use #{variable_name} to insert variables values.
Syntax:
print(string) ---> String
Example:
print("nHello, WorldnnHow are you? tt I'm fine!n")
x=10 y=20
print("nx value = #{x} , y value = #{y} n")
354

5. Ring Documentation, Release 1.8
45.3 Print2Str() Function
Syntax:
print2Str(string) ---> String
Example:
world = "World!"
mystring = print2str("Hello, #{world} nIn Year n#{2000+17} n")
see mystring + nl
Output:
Hello, World!
In Year
2017
45.4 GetString() function
Get input from the keyboard - return value as string
getstring() ---> string
45.5 GetNumber() function
Get input from the keyboard - return value as number
getnumber() ---> number
45.6 AppPath() function
Get the path of the application folder
Syntax:
AppPath() ---> The path as String
Example:
Load "stdlib.ring"
# Application Path
Puts("Test AppPath()")
See AppPath() + nl
45.7 JustFilePath() function
Get the path of the file, remove the file name.
45.3. Print2Str() Function 355

6. Ring Documentation, Release 1.8
Syntax:
JustFilePath(cFile) ---> The path as String
Example:
load "stdlib.ring"
see justfilePath("b:ringapplicationsrnoternote.ring")
Output:
b:ringapplicationsrnote
45.8 JustFileName() function
Get the file, remove the file path.
Syntax:
JustFileName(cFile) ---> The file name as String
Example:
load "stdlib.ring"
see justfileName("b:ringapplicationsrnoternote.ring")
Output:
rnote.ring
45.9 Value() function
create a copy from a list or object
Syntax:
value(List) ---> new list
Example:
Load "stdlib.ring"
aList = 1:10
del(value(aList),1) # delete first item
see aList # print numbers from 1 to 10
45.10 Times() function
Execute a Function nCount times
Syntax:
45.8. JustFileName() function 356

7. Ring Documentation, Release 1.8
Times(nCount,function)
Example:
Load "stdlib.ring"
Puts("Test Times()")
Times ( 3 , func { see "Hello, World!" + nl } )
45.11 Map() function
Execute a Function on each list item
Syntax:
Map(alist,function) ---> List
Example:
Load "stdlib.ring"
Puts("Test Map()")
See Map( 1:10, func x { return x*x } )
45.12 Filter() function
Execute a Function on each list item to filter items
Syntax:
Filter(alist,function) ---> List
Example:
Load "stdlib.ring"
Puts("Test Filter()")
See Filter( 1:10 , func x { if x <= 5 return true else return false ok } )
45.13 Split() function
Convert string words to list items
Syntax:
Split(cstring,delimiter) ---> List
Example:
Load "stdlib.ring"
Puts("Test Split()")
See Split("one two three four five"," ")
45.11. Map() function 357

8. Ring Documentation, Release 1.8
45.14 SplitMany() function
Convert string words to list items. Allow many delimiters.
Syntax:
SplitMany(cstring,delimiters as string or list) --> List
Example:
Load "stdlib.ring"
Puts("Test SplitMany()")
See SplitMany("one,two,three,four and five"," ,")
45.15 NewList() function
Create a two dimensional list
Syntax:
NewList(nRows,nColumns) ---> new list
Example:
Load "stdlib.ring"
Puts("Test Newlist()")
a1 = 3
a2 = 5
chrArray = newlist(a1,a2)
numArray = newlist(a1,a2)
chrArray[1][1] = "Hello"
numArray[1][1] = 987.2
See chrArray[1][1] + nl
See numArray[1][1] + nl
45.16 Capitalized() function
Return a copy of a string with the first letter capitalized
Syntax:
Capitalized(string) ---> string
Example:
Load "stdlib.ring"
Puts("Test Capitalized()")
See capitalized("welcome to the Ring Programming Language")
45.14. SplitMany() function 358

9. Ring Documentation, Release 1.8
45.17 IsSpecial() function
Check whether a character is special or not
Syntax:
IsSpecial(char) ---> True/False
Example:
Load "stdlib.ring"
Puts("Test Isspecial()")
See "Isspecial = " + isSpecial("%") + nl
45.18 IsVowel() function
Check whether a character is vowel or not
Syntax:
IsVowel(char) ---> True/False
Example:
Load "stdlib.ring"
Puts("Test Isvowel()")
See "Isvowel = " + isVowel("c") + nl
45.19 LineCount() function
Return the lines count in a text file.
Syntax:
LineCount(cFileName) ---> Lines Count as number
Example:
Load "stdlib.ring"
Puts("Test Linecount()")
See "the number of lines = " + lineCount("test.ring")
45.20 Factorial() function
Return the factorial of a number
Syntax:
Factorial(number) ---> number
Example:
45.17. IsSpecial() function 359

10. Ring Documentation, Release 1.8
Load "stdlib.ring"
Puts("Test Factorial()")
see "6 factorial is : " + Factorial(6)
45.21 Fibonacci() function
Return the fibonacci number
Syntax:
Fibonacci(number) ---> number
Example:
Load "stdlib.ring"
Puts("Test Fibonacci()")
see "6 Fibonacci is : " + Fibonacci(6)
45.22 IsPrime() function
Check whether a number is prime or not
Syntax:
isprime(number) ---> Number
Example:
Load "stdlib.ring"
Puts("Test Isprime()")
if isPrime(16) see "16 is a prime number"
else see "16 is not a prime number" ok
45.23 Sign() function
Returns an integer value indicating the sign of a number.
Syntax:
Sign(number) ---> number ( -1 = negative , 0 , 1 (positive) )
Example:
Load "stdlib.ring"
Puts("Test Sign()")
see "sign of 12 is = " + sign(12) + nl
45.21. Fibonacci() function 360