Delete/remove/drop variable in q

Question

I've created a variable in the :

q)myvar: 1

How can I delete it? I've tried:

q)delete myvar from `.z

but the namespace `.z is clearly not the right one, as the variable still does exist:

q)myvar
1

Answer 1

The top namespace is actually called `., so the following will work:

q)delete myvar from `.
`.
q)myvar
`myvar

Also, running key `. will show all variable defined in the top namespace.