public static bool StartsWith <T1>([NotNull] this IStructure structure, [CanBeNull] out T1 obj1)
where T1 : ZilObject
{
if (structure.HasLengthAtLeast(1) && structure.GetFirst() is T1 elem1)
{
obj1 = elem1;
return(true);
}
obj1 = default;
return(false);
}
public static bool StartsWith <T1, T2>([NotNull] this IStructure structure, [CanBeNull] out T1 obj1, [CanBeNull] out T2 obj2)
where T1 : ZilObject
where T2 : ZilObject
{
if (structure.HasLengthAtLeast(2) && structure[0] is T1 elem1 && structure[1] is T2 elem2)
{
obj1 = elem1;
obj2 = elem2;
return(true);
}
obj1 = default;
obj2 = default;
return(false);
}
public static bool StartsWith <T1, T2, T3, T4>([NotNull] this IStructure structure, [CanBeNull] out T1 obj1, [CanBeNull] out T2 obj2,
[CanBeNull] out T3 obj3, [CanBeNull] out T4 obj4)
where T1 : ZilObject
where T2 : ZilObject
where T3 : ZilObject
where T4 : ZilObject
{
if (structure.HasLengthAtLeast(4) && structure[0] is T1 elem1 && structure[1] is T2 elem2 && structure[2] is T3 elem3 &&
structure[3] is T4 elem4)
{
obj1 = elem1;
obj2 = elem2;
obj3 = elem3;
obj4 = elem4;
return(true);
}
obj1 = default;
obj2 = default;
obj3 = default;
obj4 = default;
return(false);
}
