In q, how to add a symbol to a symbol

Question

I'm trying to load a table with a variable name.

Let's say:

a:`partofurl;

Then this doesn't work:

load `:c:/q/a/table;

So how can I use the variable a in the url symbol expression?

Answer 1

In certain scenarios like this one you can use sv (http://code.kx.com/q/ref/casting/#sv)

q)` sv `:c:/q,a,`table
`:c:/q/partofurl/table

Failing that, you can always string and append

q)`$":c:/q/",string[a],"/table"
`:c:/q/partofurl/table