public static bool HasFeature(string feature)
{
var list = (Cons)Symbols.Features.Value;
var result = SeqBase.FindItem(list, feature, Eql, SymbolName, null);
return(result.Item2 != null);
}
public static object Position(object item, IEnumerable seq, params object[] args)
{
var kwargs = ParseKwargs(args, new string[] { "test", "key" });
var test = GetClosure(kwargs[0], EqualApply);
var key = GetClosure(kwargs[1]);
var mv = SeqBase.FindItem(seq, item, test, key, null);
return(mv.Item2);
}
public static object Find(object item, IEnumerable seq, params object[] args)
{
var kwargs = ParseKwargs(args, new string[] { "test", "key", "default" });
var test = GetClosure(kwargs[0], EqualApply);
var key = GetClosure(kwargs[1]);
var defaultValue = kwargs[2];
var mv = SeqBase.FindItem(seq, item, test, key, defaultValue);
return(mv.Item1);
}
