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rand: add pub fn rand.read(mut buf []byte) and pub fn rand.bytes(needed int) ?[]byte{} + tests

This commit is contained in:
Delyan Angelov
2022-02-06 10:49:43 +02:00
parent ece73836aa
commit 66f21cae55
4 changed files with 82 additions and 0 deletions

View File

@ -174,6 +174,16 @@ pub fn f64_in_range(min f64, max f64) f64 {
return default_rng.f64_in_range(min, max)
}
// bytes returns a buffer of `bytes_needed` random bytes
pub fn bytes(bytes_needed int) ?[]byte {
if bytes_needed < 0 {
return error('can not read < 0 random bytes')
}
mut res := []byte{len: bytes_needed}
read(mut res)
return res
}
const (
english_letters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
hex_chars = 'abcdef0123456789'