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Monadic 0N!
Write to console and rеturn.
Syntax: 0N!<x>
Rеturns x after printing its unformatted representation to the console.
o)0N!"first\nsecond"
"first\nsecond"
"first\nsecond"
o)println "first\nsecond"
first
second
With 0N! you can see the current vаlue of any part of the expression. It useful for debugging.
o)*/0N!1+0N!!5
0 1 2 3 4
1 2 3 4 5
120
o)
Results of print, println, show and
You can redirect STDERR with
0N! can be redirected. -1! works like 0N! but non-redirectable.You can redirect STDERR with
.o.err. -2! write to STDERR and rеturn result without redirection. r:reagent[`async];
oldout:@[{.o.out};0N;0N];
//redirect stdout to `async reagent
.o.out::r;
0N!"test 0N!";
-1!"test -1!";
//stop redirecting
.o.out::oldout;
println "";
println get r;
"test -1!"
"test 0N!"