Difference between revisions of "LSL 演算子"

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<code>result = left + right</code>
<code>result = left + right</code>
|-{{Hl2}}
|-{{Hl2}}
!Left Type
!Left の型
!Right Type
!Right の型
!Result Type
!Result の型
!Description
!説明
|-
|-
|integer
|integer
|integer
|integer
|integer
|integer
|'''left'''と'''right'''を加算する
|'''left''' と '''right''' を加算する
|-
|-
|integer
|integer
|float
|float
|float
|float
|'''left'''と'''right'''を加算する
|'''left''' と '''right''' を加算する
|-
|-
|float
|float
|integer
|integer
|float
|float
|'''left'''と'''right'''を加算する
|'''left''' と '''right''' を加算する
|-
|-
|string
|string

Revision as of 00:24, 12 December 2007

Operators are used to cause an operation (or mathematical action) to be performed on two operands. The easy and common example is 1 + 2 where 1 and 2 are operands, and the + is the operator.

This concept can be extended much further with LSL since operands can be variables with the special case of the assignment operators requiring that the left hand side be a variable.

Operator Description Usage Example
() [] . Parenthesis, Brackets, and Dot do this second (do this first)
(type) Typecasting message = "The result is:" + (string) result;
! ~ ++ -- NOT, One's Complement, Increment, Decrement counter++;
* / % Multiply/Dot-Product, Divide, Modulus/Cross-Product rollover = (count + 1)%5;
- Subtraction one = 3 - 2;
+ Addition or joining Strings two = 1+1;

text = "Hello" + "World";

+ Concatenation or joining Lists myList = [1, 2, 3] + [4, 5];

newList = oldList + addList;

<< >> Left Shift, Right Shift eight = 4 << 1;
< <= > >= Less Than, Less Than Or Equal To,

Greater Than, Greater Than or Equal To

isFalse = (6 <= 4);
==  != Comparison Equal, Comparison Not Equal isFalse = ("this" == "that");
& Bitwise AND zero = 4 & 2;

four = 4 & 4;

^ Bitwise XOR zero = 4 ^ 4;

six = 4 ^ 2;

| Bitwise OR four = 4 | 4;

six = 4 | 2;

|| Comparison OR isTrue = (FALSE || TRUE);
&& Comparison AND isFalse = (FALSE && TRUE);
= += -= *= /= %= Assignment four = 4;


Note: The order of precedence of boolean operators is unclear. It is possible that there is a bug in the expression parser, making precedence inconsistent, or it may simply be that || and && have equal precedence; testing is inconclusive. Thus, when in doubt, parenthesize.

+ 演算子

result = left + right

Left の型 Right の型 Result の型 説明
integer integer integer leftright を加算する
integer float float leftright を加算する
float integer float leftright を加算する
string string string Concatenates right onto the end of left.
list * list Concatenates right onto the end of left.
* list list Affixes left onto the start of right.
vector vector vector Adds left and right
rotation rotation rotation Adds left and right
Not useful for combining rotations, use * or / instead.