Difference between revisions of "Expressions"
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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 themself). Blocks are almost excusively used in conjuntion with control structures. | 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 themself). Blocks are almost excusively used in conjuntion with control structures. | ||
| − | + | <pre> | |
{ | { | ||
set %var 2 + 2 | set %var 2 + 2 | ||
display ok %var | display ok %var | ||
| − | } | + | }</pre> |
Control structure are defined individually elsewhere in the documentation. | Control structure are defined individually elsewhere in the documentation. | ||
Revision as of 12:19, 18 August 2005
Expressions
Expressions are important building blocks in an EasyUO script. They can be used to create relatively advanced integer mathematics.
An expression can be a simple constant value or it can be a more advanced mathematical expression.
set %var 2 + 2
User Contributed Notes
/docs/expressions.php
the.WZA@easyuo.com
30-Jun-2005 14:32
This whole chapter need to be clarified in order to distingish Satements from 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 themself). Blocks are almost excusively used in conjuntion 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>
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