LSL Constants vs Globals

There are some advantages in using global variables over the string and key constants, it's faster and uses less bytecode when it is longer then 3 characters and it used more then twice but it uses more bytecode when it is shorter then 3 characters or it used once. This is easily demonstrated by running the scripts in Figure 1.

Pros

• Faster
• Uses less bytecode when it is longer then 3 characters and it used more then twice.

Cons

• User can accidentally change the value.
• Uses more bytecode when it is shorter then 3 characters or it used once.

Figure 1: Bytecode Cost

Constant	Global
<lsl> dead(){ key a = NULL_KEY; key b = NULL_KEY; key c = NULL_KEY; key d = NULL_KEY; } default { state_entry() { llOwnerSay(llGetFreeMemory()); } }</lsl>	<lsl>key null_key = NULL_KEY; dead(){ key a = null_key; key b = null_key; key c = null_key; key d = null_key; } default { state_entry() { llOwnerSay(llGetFreeMemory()); } }</lsl>