Task LogSetChange <T, TA>(GuildLog log,
string change,
T b,
T a,
Func <T, IEnumerable <TA> > check,
Func <TA, string> toString)
{
var ia = check(a);
var ib = check(b);
var bIa = ib.Except(ia);
var aIb = ia.Except(ib);
if (bIa.Any() || aIb.Any())
{
var roleLog = $"{change} changed:";
if (aIb.Any())
{
roleLog += $" +[{aIb.Select(toString).Join(", ")}]";
}
if (bIa.Any())
{
roleLog += $" -[{bIa.Select(toString).Join(", ")}]";
}
return(log.LogEvent(roleLog));
}
return(Task.CompletedTask);
}
Task LogChange <T, TA>(GuildLog log,
string change,
T b,
T a,
Func <T, TA> check)
{
var valA = check(a);
var valB = check(b);
if (!EqualityComparer <TA> .Default.Equals(valA, valB))
{
return(log.LogEvent($"{change} changed: \"{valB}\" => \"{valA}\""));
}
return(Task.CompletedTask);
}