.h.hy[x;y]

Where

• x is an HTTP content type as a symbol atom
• y is a string

returns as a string an HTTP response for y as content-type x.

q)show t:([]idx: 1 2 3 4 5;val: `a`b`c`d`e)
idx val
-------
1   a
2   b
3   c
4   d
5   e
q)show r: .h.hy[`json] .j.j 0! select count i by val from t
"HTTP/1.1 200 OK\r\nContent-Type: application/json\r\nConnection: close\r\nCo..
q)`:test.txt 0: enlist r
`:test.txt
q)\head test.txt
"HTTP/1.1 200 OK"
"Content-Type: application/json"
"Connection: close"
"Content-Length: 99"
""
"[{\"val\":\"a\",\"x\":1},"
" {\"val\":\"b\",\"x\":1},"
" {\"val\":\"c\",\"x\":1},"
" {\"val\":\"d\",\"x\":1},"
" {\"val\":\"e\",\"x\":1}]"