The Ring programming language version 1.5.3 book - Part 18 of 184
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The document summarizes different code editors that can be used with Ring programming language. Extensions for Notepad++, Geany, Atom, Sublime Text 2, Visual Studio, and Emacs are provided in the Ring/Editor folder. Instructions are given on how to set up syntax highlighting and build configurations for Ring in each editor.
![Ring Documentation, Release 1.5.3
15.2 Using Geany
Folder : ring/editor/geany
• Run Geany editor
• Click on “Tools -> configuration files -> filetypes_extensions.conf” menu
• Add this line “Ring=*.ring;” without quotes after [Extensions]
• In unbuntu copy file “filetypes.Ring.conf” to folder “/home/USERNAME/filetypes.Ring.conf”
• You can run your files by pressing F5 button
15.2. Using Geany 147](https://image.slidesharecdn.com/171fayedringdoc1-180327101415/85/The-Ring-programming-language-version-1-5-3-book-Part-18-of-184-3-320.jpg)
![Ring Documentation, Release 1.5.3
15.4 Using Sublime Text 2
Folder : ring/editor/sublime text 2
In the folder Sublime_Text_2 you will find the next three files
1 - ring.json-tmlanguage
2 - ring.sublime-build
3 - ring.tmlanguage
Just Copy the files to the next path
"C:Users{UserName}AppDataRoamingSublime Text 2PackagesUser"
The file ring.sublime-build includes the next line
"cmd": ["B:ringbinring.exe","$file"],
You can modify it according to the ring.exe path in your machine
15.4. Using Sublime Text 2 149](https://image.slidesharecdn.com/171fayedringdoc1-180327101415/85/The-Ring-programming-language-version-1-5-3-book-Part-18-of-184-5-320.jpg)
![CHAPTER
SIXTEEN
VARIABLES
To create a new variable, you just need to determine the variable name & value. The value will determine the variable
type and you can change the value to switch between the types using the same variable name.
Syntax:
<Variable Name> = <Value>
Tip: The operator ‘=’ is used here as an Assignment operator and the same operator can be used in conditions, but
for testing equality of expressions.
Note: The Variable will contains the real value (not a reference). This means that once you change the variable value,
the old value will be removed from memory (even if the variable contains a list or object).
16.1 Dynamic Typing
Ring is a dynamic programming language that uses Dynamic Typing.
x = "Hello" # x is a string
see x + nl
x = 5 # x is a number (int)
see x + nl
x = 1.2 # x is a number (double)
see x + nl
x = [1,2,3,4] # x is a list
see x # print list items
x = date() # x is a string contains date
see x + nl
x = time() # x is a string contains time
see x + nl
x = true # x is a number (logical value = 1)
see x + nl
x = false # x is a number (logical value = 0)
see x + nl
16.2 Deep Copy
We can use the assignment operator ‘=’ to copy variables. We can do that to copy values like strings & numbers. Also,
we can copy complete lists & objects. The assignment operator will do a complete duplication for us. This operation
called Deep Copy
152](https://image.slidesharecdn.com/171fayedringdoc1-180327101415/85/The-Ring-programming-language-version-1-5-3-book-Part-18-of-184-8-320.jpg)
![Ring Documentation, Release 1.5.3
list = [1,2,3,"four","five"]
list2 = list
list = []
See list # print the first list - no items to print
See "********" + nl
See list2 # print the second list - contains 5 items
16.3 Weakly Typed
Ring is a weakly typed language, this means that the language can automatically convert between data types (like
string & numbers) when that conversion make sense.
Rules:
<NUMBER> + <STRING> --> <NUMBER>
<STRING> + <NUMBER> --> <STRING>
Note: The same operator ‘+’ can be used as an arithmetic operator or for string concatenation.
Example:
x = 10 # x is a number
y = "20" # y is a string
sum = x + y # sum is a number (y will be converted to a number)
Msg = "Sum = " + sum # Msg is a string (sum will be converted to a string)
see Msg + nl
16.3. Weakly Typed 153](https://image.slidesharecdn.com/171fayedringdoc1-180327101415/85/The-Ring-programming-language-version-1-5-3-book-Part-18-of-184-9-320.jpg)
The Ring programming language version 1.5.3 book - Part 18 of 184
- 1. Ring Documentation, Release 1.5.3 14.11 The Browser Menu From this menu we can quickly open common links in the browser 14.12 The Tools Menu From this window we can run the Form Designer in separate window Also we can run the REPL (Read-Eval-Print-Loop) application 14.13 The Help Menu From this menu we can get the help files (CHM & PDF) 14.11. The Browser Menu 145
- 2. CHAPTER FIFTEEN USING OTHER CODE EDITORS In the Ring/Editor folder you will find extensions for the next editors • Notepad++ • Geany • Atom • Sublime Text 2 • Visual Studio IDE • Emacs 15.1 Using Notepad++ Folder : ring/editor/notepad_plus_plus • Open Notepad++ • Open the “Language” menu • Select “Define your language...” • Click “Import...” • select Ring.xml • Select “OK” on the “Import successful” dialog and close the “User Defined Language” dialog/panel • You may need to restart notepad++ 146
- 3. Ring Documentation, Release 1.5.3 15.2 Using Geany Folder : ring/editor/geany • Run Geany editor • Click on “Tools -> configuration files -> filetypes_extensions.conf” menu • Add this line “Ring=*.ring;” without quotes after [Extensions] • In unbuntu copy file “filetypes.Ring.conf” to folder “/home/USERNAME/filetypes.Ring.conf” • You can run your files by pressing F5 button 15.2. Using Geany 147
- 4. Ring Documentation, Release 1.5.3 15.3 Using Atom Folder : ring/editor/atom Just Copy the folder atom-language-ring to the next path "C:Users{UserName}.atomPackages" 15.3. Using Atom 148
- 5. Ring Documentation, Release 1.5.3 15.4 Using Sublime Text 2 Folder : ring/editor/sublime text 2 In the folder Sublime_Text_2 you will find the next three files 1 - ring.json-tmlanguage 2 - ring.sublime-build 3 - ring.tmlanguage Just Copy the files to the next path "C:Users{UserName}AppDataRoamingSublime Text 2PackagesUser" The file ring.sublime-build includes the next line "cmd": ["B:ringbinring.exe","$file"], You can modify it according to the ring.exe path in your machine 15.4. Using Sublime Text 2 149
- 6. Ring Documentation, Release 1.5.3 15.5 Using Visual Studio IDE Folder : ring/editor/visualstudio Check the ReadMe file for installation instructions. 15.5. Using Visual Studio IDE 150
- 7. Ring Documentation, Release 1.5.3 15.6 Using Emacs Editor Folder : ring/editor/emacs Check the ReadMe file for installation instructions. Screen Shot: 15.6. Using Emacs Editor 151
- 8. CHAPTER SIXTEEN VARIABLES To create a new variable, you just need to determine the variable name & value. The value will determine the variable type and you can change the value to switch between the types using the same variable name. Syntax: <Variable Name> = <Value> Tip: The operator ‘=’ is used here as an Assignment operator and the same operator can be used in conditions, but for testing equality of expressions. Note: The Variable will contains the real value (not a reference). This means that once you change the variable value, the old value will be removed from memory (even if the variable contains a list or object). 16.1 Dynamic Typing Ring is a dynamic programming language that uses Dynamic Typing. x = "Hello" # x is a string see x + nl x = 5 # x is a number (int) see x + nl x = 1.2 # x is a number (double) see x + nl x = [1,2,3,4] # x is a list see x # print list items x = date() # x is a string contains date see x + nl x = time() # x is a string contains time see x + nl x = true # x is a number (logical value = 1) see x + nl x = false # x is a number (logical value = 0) see x + nl 16.2 Deep Copy We can use the assignment operator ‘=’ to copy variables. We can do that to copy values like strings & numbers. Also, we can copy complete lists & objects. The assignment operator will do a complete duplication for us. This operation called Deep Copy 152
- 9. Ring Documentation, Release 1.5.3 list = [1,2,3,"four","five"] list2 = list list = [] See list # print the first list - no items to print See "********" + nl See list2 # print the second list - contains 5 items 16.3 Weakly Typed Ring is a weakly typed language, this means that the language can automatically convert between data types (like string & numbers) when that conversion make sense. Rules: <NUMBER> + <STRING> --> <NUMBER> <STRING> + <NUMBER> --> <STRING> Note: The same operator ‘+’ can be used as an arithmetic operator or for string concatenation. Example: x = 10 # x is a number y = "20" # y is a string sum = x + y # sum is a number (y will be converted to a number) Msg = "Sum = " + sum # Msg is a string (sum will be converted to a string) see Msg + nl 16.3. Weakly Typed 153
- 10. CHAPTER SEVENTEEN OPERATORS In this chapter we will introduce the operators provided by the Ring programming langauge. 17.1 Arithmetic Operators The next table presents all of the arithmetic operators provided by the Ring language. Assume variable X=50 and variable Y=10 then: Operator Description Example Result + Add x+y 60 - Subtract x-y 40 * Multiplies x*y 500 / Divide x/y 5 % Modulus x%y 0 ++ Increment x++ 51 - - Decrement x- - 49 17.2 Relational Operators The next table presents all of the relational operators provided by the Ring language. Assume variable X=50 and variable Y=10 then: Operator Description Example Result = Equal x = y False != Not Equal x != y True > Greater than x > y True < Less than x < y False >= Greater or Equal x >= y True <= Less than or Equal x <= y False 17.3 Logical Operators The next table presents all of the logical operators provided by the Ring language. Assume variable X=True and variable Y=False then: Operator Description Example Result and Logical AND x and y False or Logical OR x or y True not Logical Not not x False 154