Difference between revisions of "LlList2Float"

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(Both hexadecimal notation and scientific notation are supported now)
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|return_text=that is at '''index''' in '''src'''.
|return_text=that is at '''index''' in '''src'''.
|spec
|spec
|caveats=*When used to typecast from a string it can only handle floats in simple notation. It will not handle hex formats or scientific notation.
|caveats=*A string of hexadecimal notation (e.g. "0x12A") or scientific notation (e.g. "6.2e+1") will be casted as a decimal float.
**A true typecast will handle both properly: <code>([[float]])[[llList2String]]('''src''', '''index''');</code>
**Unfortunately, if it was already a float type, using [[llList2String]] will cause the decimal values to be truncated to six decimal places.
***Unfortunately, if it was already a float type, using [[llList2String]] will cause the decimal values to be truncated to six decimal places.
|constants
|constants
|examples=
|examples=

Revision as of 05:37, 20 April 2009

Summary

Function: float llList2Float( list src, integer index );
0.0 Forced Delay
10.0 Energy

Returns a float that is at index in src.

• list src List containing the element of interest.
• integer index Index of the element of interest.

index supports negative indexes.
If index describes a location not in src then zero is returned.
If the type of the element at index in src is not a float it is typecast to a float. If it cannot be typecast zero is returned.

Specification

Index Positive Negative
First 0 -length
Last length - 1 -1

Indexes

  • Positive indexes count from the beginning, the first item being indexed as 0, the last as (length - 1).
  • Negative indexes count from the far end, the first item being indexed as -length, the last as -1.

Caveats

  • If index is out of bounds the script continues to execute without an error message.
  • A string of hexadecimal notation (e.g. "0x12A") or scientific notation (e.g. "6.2e+1") will be casted as a decimal float.
    • Unfortunately, if it was already a float type, using llList2String will cause the decimal values to be truncated to six decimal places.

Examples

<lsl>// Best viewed in Chat History (ctrl-h) default {

   state_entry()
   {
       list my_list = ["a", 1, 2.0, <1,2,3>, <1,2,3,4>, llGetOwner()];
       integer i = ~llGetListLength(my_list);
       while (++i)
       {
           llOwnerSay("string=" + llList2String(my_list,i)
                       + "\n   integer=" + (string)llList2Integer(my_list,i)
                       + "\n   float=" + (string)llList2Float(my_list,i)
                       + "\n   vector=" + (string)llList2Vector(my_list,i)
                       + "\n   rot=" + (string)llList2Rot(my_list,i)
                       + "\n   key=" + (string)llList2Key(my_list,i) );
       }
   }
}</lsl>

See Also

Functions

•  llGetListEntryType
•  llList2Integer
•  llList2String

Articles

•  Negative Index

Deep Notes

Signature

function float llList2Float( list src, integer index );