Difference between revisions of "List cast"
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{{LSL_Function | {{LSL_Function | ||
|func= | |func=list_cast | ||
|func_desc=Iterates through the contents of a list, producing a resulting list whose contents are cast from strings to their identified type. This function is useful for converting a list of strings, such as from llParseString2List, to a list that could be used for llSetPrimitiveParams, or a list you know you are going to use a lot to save on casting all the time. | |func_desc=Iterates through the contents of a list, producing a resulting list whose contents are cast from strings to their identified type. This function is useful for converting a list of strings, such as from llParseString2List, to a list that could be used for llSetPrimitiveParams, or a list you know you are going to use a lot to save on casting all the time. | ||
|return_type=list | |return_type=list | ||
| Line 8: | Line 8: | ||
|cat1=Examples | |cat1=Examples | ||
|cat2=Library | |cat2=Library | ||
|cat3=User-Defined Functions | |||
|caveats= | |caveats= | ||
* Any strings fed into this function (which are meant to stay strings) cannot contain pointed brackets (<>) They will be cast as vectors or rotations, if they do. | * Any strings fed into this function (which are meant to stay strings) cannot contain pointed brackets (<>) They will be cast as vectors or rotations, if they do. | ||
|examples=< | |examples=<source lang="lsl2"> | ||
list in = ["1", "<1.0,2.5,0.5>", "0.8", "0", "Four", "8aef4875-6873-0919-f5ab-c9d6b48d18d4"]; | list in = ["1", "<1.0,2.5,0.5>", "0.8", "0", "Four", "8aef4875-6873-0919-f5ab-c9d6b48d18d4"]; | ||
| Line 16: | Line 17: | ||
llSetScale( llList2Vector(in,1) ); | llSetScale( llList2Vector(in,1) ); | ||
llSetAlpha( llList2Float(in,2), llList2Integer(in,3) ); | llSetAlpha( llList2Float(in,2), llList2Integer(in,3) ); | ||
</ | </source> | ||
}} | }} | ||
= Implementation = | = Implementation = | ||
< | <source lang="lsl2"> | ||
//This function typecasts a list of strings, into the types they appear to be. | //This function typecasts a list of strings, into the types they appear to be. | ||
//Extremely useful for feeding user data into llSetPrimitiveParams | //Extremely useful for feeding user data into llSetPrimitiveParams | ||
| Line 76: | Line 77: | ||
return out; | return out; | ||
} | } | ||
</ | </source> | ||
{{LSLC|Examples}} | {{LSLC|Examples}} | ||
Latest revision as of 15:27, 22 January 2015
| LSL Portal | Functions | Events | Types | Operators | Constants | Flow Control | Script Library | Categorized Library | Tutorials |
Summary
Function: list list_cast( list in );
Iterates through the contents of a list, producing a resulting list whose contents are cast from strings to their identified type. This function is useful for converting a list of strings, such as from llParseString2List, to a list that could be used for llSetPrimitiveParams, or a list you know you are going to use a lot to save on casting all the time.
Returns a list whose contents are cast to their identified types.
| • list | in | – | The list to cast, its contents should be all strings. |
Caveats
- Any strings fed into this function (which are meant to stay strings) cannot contain pointed brackets (<>) They will be cast as vectors or rotations, if they do.
Examples
list in = ["1", "<1.0,2.5,0.5>", "0.8", "0", "Four", "8aef4875-6873-0919-f5ab-c9d6b48d18d4"];
in = list_cast(in);
llSetScale( llList2Vector(in,1) );
llSetAlpha( llList2Float(in,2), llList2Integer(in,3) );
Implementation
//This function typecasts a list of strings, into the types they appear to be.
//Extremely useful for feeding user data into llSetPrimitiveParams
//It takes a list as an input, and returns that list, with all elements correctly typecast, as output
//Written by Fractured Crystal, 27 Jan 2010, Commissioned by WarKirby Magojiro, this function is Public Domain
list list_cast(list in)
{
list out;
integer i = 0;
integer l= llGetListLength(in);
while(i < l)
{
string d= llStringTrim(llList2String(in,i),STRING_TRIM);
if(d == "")out += "";
else
{
if(llGetSubString(d,0,0) == "<")
{
if(llGetSubString(d,-1,-1) == ">")
{
list s = llParseString2List(d,[","],[]);
integer sl= llGetListLength(s);
if(sl == 3)
{
out += (vector)d;
//jump end;
}else if(sl == 4)
{
out += (rotation)d;
//jump end;
}
}
//either malformed,or identified
jump end;
}
if(llSubStringIndex(d,".") != -1)
{
out += (float)d;
}else
{
integer lold = (integer)d;
if((string)lold == d)out += lold;
else
{
key kold = (key)d;
if(kold)out += [kold];
else out += [d];
}
}
}
@end;
i += 1;
}
return out;
}