Bound returns min if val<min, max if val>max, val else.

CalcPaginationStartEnd calculates the slice offsets needed to perform pagination for desired page, pageSize and length if page=0 it will return slice offsets 0:length-1 for a "get all entries" page.

Max returns the maximal value of ints a and b.

Min returns the minimal value of ints a and b.

StrToIntDefault converts str to its equivalent int, falling back to def if str does not represent an int.