Prism Docs
The Prism Programming Language Usage Documentation.
Prism Program Files
Prism programs are saved with the .prism extension. If you want to run your
Prism program, open Terminal in the directory where your program is there and
run it as follows:
$ prism hello_world.prism
Prism Interactive Shell
Prism offers a command line interface to run Prism code without having to write to any files with its interactive shell. If you just want to test a few lines of Prism code as soon as possible, you don't have to write a program and save it into a file! Use the Prism interactive shell.
The interactive shell is just one command away from your terminal:
$ prism
This brings up the Prism interactive shell, where you can run any Prism code:
Prism prototype version on windows/386!
Welcome to the interactive shell.
>>>
Once the interactive shell is started, you can issue any command at the prompt
>>>:
Prism prototype version on windows/386!
Welcome to the interactive shell.
>>> println("Hello, World!")
Hello, World!
None
>>> let x = (5 + 10 * 2 + 15 / 3) * 2 + -10
>>> x
50
Prism Installation Directory
If you install Prism with the provided installer, it'll install the Prism binaries in the following path, depending on your operating system:
/usr/local/bin/prism- macOS and Linux based operating systems%SYSTEMROOT%\prism.exe- Windows operating systems
If you want to uninstall Prism, all you need to do is remove the aforementioned file and you're good to go.
Operator Precedence
The following table summarizes the operator precedence in Prism, from highest precedence (most binding) to lowest precedence (least binding). Unless explicitly stated, operators are binary.
| Precedence | Operator | Description | Associativity |
|---|---|---|---|
| 0 | () |
Parentheses / Grouping | Left-to-right |
| 1 | obj.attr |
Attribute access | Left-to-right |
obj[key] |
Subscription | Left-to-right | |
| 2 | f(args...) |
Function call | Left-to-right |
| 3 | ++ |
Post Increment | Right-to-left |
-- |
Post Decrement | Right-to-left | |
| 4 | ++ |
Pre Increment | Right-to-left |
-- |
Pre Decrement | Right-to-left | |
~ |
Bitwise NOT | Right-to-left | |
! |
Logical NOT | Right-to-left | |
+ |
Unary plus | Right-to-left | |
- |
Unary minus | Right-to-left | |
| 5 | % |
Modulo / Remainder | Left-to-right |
/ |
Division | Left-to-right | |
* |
Multiplication | Left-to-right | |
| 6 | + |
Addition | Left-to-right |
- |
Subtraction | Left-to-right | |
| 7 | << |
Bitwise Left Shift | Left-to-right |
>> |
Bitwise Right Shift | Left-to-right | |
| 8 | & |
Bitwise AND | Left-to-right |
| 9 | ^ |
Bitwise XOR | Left-to-right |
| 10 | | |
Bitwise OR | Left-to-right |
| 11 | < |
Less than | Left-to-right |
<= |
Less than or equal to | Left-to-right | |
> |
Greater than | Left-to-right | |
>= |
Greater than or equal to | Left-to-right | |
| 12 | == |
Equal to | Left-to-right |
!= |
Not equal to | Left-to-right | |
| 13 | && |
Logical AND | Left-to-right |
| 14 | || |
Logical OR | Left-to-right |
| 15 | = |
Direct assignment | Right-to-left |
