Preemtive is exactly the word.


2013/10/18 Andrej Mitrovic <notifications@github.com>

> In glossary.dd:
>
> > @@ -23,17 +23,20 @@ $(DL
> >  	variable-length encodings $(LUCKY UTF-8) and $(LUCKY UTF-16).)
> >
> >  	$(DT $(LNAME2 cow, $(ACRONYM COW, Copy On Write)))
> > -	$(DD COW is a memory allocation strategy where arrays are copied
> > -	if they are to be modified.
> > +	$(DD COW is a memory management strategy where (usually large) reference
> > +	objects are copied if they are to be modified. The constant overhead of COW can be
> > +	high, but may be preferable in applications that would otherwise do a lot of
> > +	defensive copying.
>
> Perhaps preventive or preemptive is a better word?
>
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>