Difference between revisions of "Expressions"
m (→Expressions) |
m (→Expressions) |
||
| Line 4: | Line 4: | ||
Expressions are important building blocks in an EasyUO script. They can be used to create relatively advanced integer mathematics. | Expressions are important building blocks in an EasyUO script. They can be used to create relatively advanced integer mathematics. | ||
| − | An expression | + | An expression is any of the following: |
| + | * a literal | ||
| + | * a variable | ||
| + | * an expression enclosed with parenthesis | ||
| + | * an unary operator followed by an expression | ||
| + | * an expression followed by a binary operator and an expression | ||
| + | |||
| + | |||
<pre> | <pre> | ||
| − | set %var 2 + 2</pre> | + | set %var 1337 ; literal numeric value |
| + | set %name cheffe ; literal string value | ||
| + | set %temp %var | ||
| + | set %faux ! #true ; unary operator | ||
| + | set %var %var + 1 ; binary operator | ||
| + | set %calculus ( 2 + 2 ) * ( 3 - 1 ) ; parenthesis enclosed expressions</pre> | ||
===Statements=== | ===Statements=== | ||
Revision as of 12:44, 17 July 2007
Contents
Expressions
Expressions are important building blocks in an EasyUO script. They can be used to create relatively advanced integer mathematics.
An expression is any of the following:
- a literal
- a variable
- an expression enclosed with parenthesis
- an unary operator followed by an expression
- an expression followed by a binary operator and an expression
set %var 1337 ; literal numeric value set %name cheffe ; literal string value set %temp %var set %faux ! #true ; unary operator set %var %var + 1 ; binary operator set %calculus ( 2 + 2 ) * ( 3 - 1 ) ; parenthesis enclosed expressions
Statements
An EasyUO script is a sequence of statements. A statement is any of the following: - a command - a block - a control structure
A command typically takes the form: <command_name> <parameters>
Example: set %var 2 + 2
A block is a sequence of statements grouped within brackets. Opening and closing brackets MUST occurs on a distinct line (Hence one could argue that both "{" and "}" are statements by themselves). Blocks are almost excusively used in conjunction with control structures.
{
set %var 2 + 2
display ok %var
}
Control structure are defined individually elsewhere in the documentation.
EXPRESSIONS:
An expresion is any of the following: - a literal - a variable - an expresion enclosed with parenthesis - an unary operator followed by an expression - an expression followed by a binary operator and an expression
Examples: 1337 ; literal numeric value cheffe ; literal string value %var ! #true ; unary operator %var + 1 ; binary operator ( 2 + 2 ) * ( 3 - 1 ) ; parenthesis enclosed expressions</pre>
| Main_Page | Documentation |
