`lower`, `upper`¶

Shift case

lower x     lower[x]
upper x     upper[x]

Where x is a character or symbol atom or vector, returns it with any bicameral characters in the lower/upper case.

q)lower"IBM"
"ibm"
q)lower`IBM
`ibm

q)upper"ibm"
"IBM"
q)upper`ibm`msft
`IBM`MSFT

domain: b g x h i j e f c s p m d z n u v t
range:  . . . . . . . . c s . . . . . . . .

Implicit iteration¶

lower and upper are atomic functions.

q)upper(`The;(`quick`brown;(`fox;`jumps`over));`a;`lazy`dog)
`THE
(`QUICK`BROWN;(`FOX;`JUMPS`OVER))
`A
`LAZY`DOG