Scripting:Operators
From STNE Wiki
(Difference between revisions)
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! Operator name !! Syntax | ! Operator name !! Syntax | ||
|- | |- | ||
| - | | | + | | Equals || a = b |
|- | |- | ||
| - | | | + | | References equal || a Is b |
|- | |- | ||
| - | | | + | | Not equal to || a <> b |
|- | |- | ||
| - | | | + | | Greater than || a > b |
|- | |- | ||
| - | | | + | | Less than || a < b |
|- | |- | ||
| - | | | + | | Greater than or equal to || a >= b |
|- | |- | ||
| - | | | + | | Less than or equal to || a <= b |
|} | |} | ||
| Line 84: | Line 84: | ||
== Notes == | == Notes == | ||
| - | + | === Assignment operator v.s. equals operator | |
| + | The {{code | assignment}} operator and the {{code | equals}} operator use the same symbol. It depends on the context which operator is used. The {{code | assignment}} operator is used when a line of code follows this syntax: {{code | Identifier {{=}} Value;}}. In all other cases, the {{code | equals}} operator is used. | ||
| + | |||
| + | === References equal === | ||
| + | The {{code | References equal}} operator returns true if both identifiers hold the same reference (or: point to the same object). | ||
| + | |||
| + | For example: | ||
| + | Var i As String = "a"; | ||
| + | Var j As String = "a"; | ||
| + | WriteLine(i Is j); // false | ||
| + | |||
| + | i = j; | ||
| + | WriteLine(i Is j); // true | ||
Revision as of 16:07, 10 September 2010
Contents |
Table
In this section, a and b represent either literal values, object references or expressions evaluating to the appropriate type.
String operators
| Operator name | Syntax |
|---|---|
| Concatenation | a & b |
Comparison operators
| Operator name | Syntax |
|---|---|
| Equals | a = b |
| References equal | a Is b |
| Not equal to | a <> b |
| Greater than | a > b |
| Less than | a < b |
| Greater than or equal to | a >= b |
| Less than or equal to | a <= b |
Arithmetic operators
| Operator name | Syntax |
|---|---|
| Assignment | a = b |
| Addition | a + b |
| Subtraction | a - b |
| Multiplication | a * b |
| Division | a / b |
| Increment | a++ |
| Increment | ++a |
| Decrement | a-- |
| Decrement | --a |
Logical operators
| Operator name | Syntax |
|---|---|
| Logical NOT | NOT a |
| Logical AND | a AND b |
| Logical OR | a OR b |
Other operators
| Operator name | Syntax |
|---|---|
| Function call | a() |
| Function reference | AddressOf a |
| Member b of a | a.b |
Notes
=== Assignment operator v.s. equals operator The assignment operator and the equals operator use the same symbol. It depends on the context which operator is used. The assignment operator is used when a line of code follows this syntax: Identifier = Value;. In all other cases, the equals operator is used.
References equal
The References equal operator returns true if both identifiers hold the same reference (or: point to the same object).
For example:
Var i As String = "a"; Var j As String = "a"; WriteLine(i Is j); // false i = j; WriteLine(i Is j); // true
