Valid locations means any number between 1 and 255. Valid in terms of data going into the function, not valid as in the location exists in the map.

The command condition will cause a lot less lag than bring, because it doesn't have to narrow it down by location when it checks the condition.

Quote from DiscipleOfAdun

Valid locations means any number between 1 and 255. Valid in terms of data going into the function, not valid as in the location exists in the map.

Is there a way to give the function an invalid location?

I actually don't know. I don't make maps hardly ever.

The only thought I have is that none of the map editors currently would allow invalid locations, except perhaps starforge. i think the rest double check input first.

Quote from DiscipleOfAdun

I actually don't know. I don't make maps hardly ever.

The only thought I have is that none of the map editors currently would allow invalid locations, except perhaps starforge. i think the rest double check input first.

I see Okay... Just to clearfy, give units is not invalidating the cache, isn't it? Fine.

Ah those lazy blizzard programmers. Mabe they've just forgotten to invalidate when creating and giving units... Ah those programmers!

I bet at this stage we could code a better Starcraft engine from scratch ourselves.

Well it's not like the blizzard programmers coded SC with the intention of allowing complex and accurate map editing
This shouldn't be a surprise at all, just look at the editor that comes with Starcraft. Clearly UMS wasn't one of their top priorities.

I'm sure it's just a result of what a programmer has to do to balance between time deadlines, efficiency, cost, and maintenance. They don't have the luxury of being able to create the most robust engine or most powerful map editor. Some may call it lazy, but from a different perspective it's just getting the job done.

You're taking it too serious:
Such an editor was an advanced tool for the game of that time... Thanks blizzard, they've always supplied their games with advanced editing tools.