There's an open PR for this:
[https://github.com/nim-lang/Nim/pull/6517](https://github.com/nim-lang/Nim/pull/6517)
Thanks @jlp765 and @dataman. I decided to go with the following for now.
proc guid():string=
result = ""
const l = 8
let f = open("/dev/urandom")
var a:array[l, byte]
discard readBytes(f, a, 0, l)
close(f)
for b in a: result.add(
import strutils
proc hexDump*[T](v: T): string =
var s: seq[uint8] = @[]
s.setLen(v.sizeof)
copymem(addr(s[0]), v.unsafeAddr, v.sizeof)
result = ""
for i in s: result.add(i.toHex)
var
i: int64 = 123
ui: uint64 = 123
f: float = 1
Have a look at `toHex()` in strutils which for anything bigger than a byte, you
can specify the number of Hex chars to produce, and for a byte will output two
hex chars.
so maybe as the equivalent of one of your %x try (untested)
"$1$2$3$4" % [toHex(b[0]), toHex(b[1]), toHex(b[2]),
Ok this is embarrassing but what's Nim's equivalent of printf? In particular
stringifying a bunch of bytes as a hex string? I see a format proc in strutils
but it seems to only accept string varargs. I was trying to put together a
crude guid generation function I have in Golang (see below) but I
