1

Hi,
I was trying to write a little script to generate a UUID using swift inside the shell.
It seems like the following snippet doesn't work

echo "import Foundation\nprint(UUID().uuidString)" | swiftc

The help output message is well documented, but since it's pretty detailed to make sure to find the right option I tried to filtered with the following lines

swiftc -h | grep "standard input"
swiftc -h | grep standard
swiftc -h | grep input
swiftc -h | grep pipe

They didn't yield the right option to use.
I was wondering what is the right option to add to read from standard input?

1 Like
2

Use a hyphen as the input file name to tell it to read from stdin:

echo "import Foundation\nprint(UUID().uuidString)" | swiftc -
4 Likes
3

It works with just swift as well as swiftc, FWIW:

$ echo "import Foundation\nprint(UUID().uuidString)" | swift - 
A3AB5802-6AA0-47F6-914C-49FA85E02049
3 Likes
4

Thanks!
Yes, stdin rather I edited it.

5

Thanks!