• Python

d, parts, t = ',-_', [], 0
for i, x in enumerate(s):
    if x in d:
        parts.append(s[t:i])
        t = i + 1
parts.append(s[t:])

• Python

p = '[%s]' % escape(',-_')
parts = split(p, s)

• Python

parts = re.split('[,_\-]', s)

• C#

var parts = s.Split(',', '-', '_');

• C#

var parts = Regex.Split(s, "[,_-]");

• Dart

var parts = s.split( RegExp(r"[,-_]") );

• Go

re := regexp.MustCompile("[,\\-_]")
parts := re.Split(s, -1)

• JS

var parts = s.split(/[-_,]/)

• Java

List<?> parts = list(new StringTokenizer(s, ",-_"));

• Java

String z = "[%s]".formatted(quote(",-_")),
       parts[] = s.split(z, -1);

• Java

Scanner t = new Scanner(s);
String z = quote(",-_");
z = "[%s]".formatted(z);
t.useDelimiter(compile(z));
String parts[] = t.tokens()
    .toArray(String[]::new);
t.close();

• Pascal

parts := s.split([',','_','-']);

• Perl

my @parts = split(/[,\-_]/, $s);

• Ruby

parts = s.split( Regexp.union(",", "-", "_") )

• Rust

let parts: Vec<_> = s.split(&[',', '-', '_'][..]).collect();