@reduce(f:function, t:tab)
@reduce(f:function, init:value, t:tab)


Function @reduce has two or three arguments, sso it cannot be curryfied.

#### Two arguments form¶

If t is empty, an undefined value is returned.

If t has only one element, this element is returned.

In the other case, the binary operation is used to combine all the elements in t into a single value

       f(... f(f(t[0], t[1]), t[2]), ... t[n])


For example, if t is a vector of booleans, @reduce(@||, t) returns the logical disjunction of the t’s elements.

#### Three arguments form¶

If t is empty, the init value is returned. In the other case, the binary operation is used to combine all the elements in t into a single value

       f(... f(f(init, t[0]), t[1]), ... t[n])


This form is more general than the previous one: the result of the reduction function may be of a different type than the elements in the tab.