Primitives proposed to fill core language gaps in Dyalog APL

In Dyalog 18.2 or higher: ]get /path/to/repo -u

Now use:

• X Ⓓ Y (X D̲ Y) for X⊇Y which is the Select function
• f Ö g for f⍥g which is the Depth operator
• f Ⓞ g (f O̲ g) for f⍛g which is the Behind operator