Difference between revisions of "LlList2Float"

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(Both hexadecimal notation and scientific notation are supported now)
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|func=llList2Float|return_type=float|p1_type=list|p1_name=src|p2_type=integer|p2_name=index
|func=llList2Float|return_type=float|p1_type=list|p1_name=src|p2_type=integer|p2_name=index
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{{LSL Tip|Please read [[User:Kireji_Haiku/How_to_deal_with_lists_in_LSL|this intro of how to iterate over a list in LSL]].}}
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|return_text=that is at '''index''' in '''src'''.
|return_text=that is at {{LSLP|index}} in {{LSLP|src}}.
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|caveats=*A string of hexadecimal notation (e.g. "0x12A") or scientific notation (e.g. "6.2e+1") will be casted as a decimal float.
|caveats=*A string of hexadecimal notation (e.g. "0x12A") or scientific notation (e.g. "6.2e+1") will be parsed as float and contain the correct value{{Footnote|Correct with in the limitations of the [[float]] type.}}.
**Unfortunately, if it was already a float type, using [[llList2String]] will cause the decimal values to be truncated to six decimal places.
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Latest revision as of 10:42, 22 January 2015

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.

KBcaution.png Important: Please read this intro of how to iterate over a list in LSL.

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 parsed as float and contain the correct value[1].

Examples

// 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) );
        }
    }
}

See Also

Functions

•  llGetListEntryType
•  llList2Integer
•  llList2String

Articles

•  Negative Index

Deep Notes

Footnotes

  1. ^ Correct with in the limitations of the float type.

Signature

function float llList2Float( list src, integer index );