Is there any way to use echo and not print a new line in Nim

Question

My code:

echo "Name: "
var input = readLine(stdin)

echo "Your name is: " + input

What I get:

Name:
<your name>
Your name is: <your name>

What I want to get (notice how there's no newline after "Name: "):

Name: <your name>
Your name is: <your name>

I want to know if there's a way to do that in Nim using echo. I know that I can use stdout.write, but is there a way to do that with just echo? Thanks to anyone who can help me with this problem.

Answer 1

As you said it yourself, you should use stdout.write.

echo is not a keyword, but just a built-in proc, so you can easily check its definition: echo in the system module. And, as you can see, the only arguments it takes are the things to print out.

So yeah, if you want to not have a newline, use stdout.write. If you want to automatically stringify all arguments, you can just create a wrapper proc in the same way echo works:

proc myecho(x: varargs[string, `$`]) = 
  for arg in x:
    stdout.write arg
  stdout.flushFile()

myecho "Name: "
var input = readLine(stdin)
myecho "Your name is: ", input

Also, if you want to specifically not print a newline for prompts (like asking the user for input), you might want to give the rdstdin module a try instead:

import std/rdstdin

let name = readLineFromStdin("Name: ")
echo "Your name is: ", name