is_eq

is_eq(obj1, obj2)
      

Return true if obj1 and obj2 are identical, otherwise return false.

Two objects are considered identical if they internally reference to the same memory location. Is_eq can efficiently check for pointer equivalence of symbols and allocated objects like pairs, arrays, and record instances.

Is_eq cannot be used to compare numbers reliably. Slogan may use different objects internally for representing two big-integers that has the same value.

Examples:

is_eq('a, 'b)
// false

is_eq('a, 'a)
// true

is_eq(\a, \a)
// true

is_eq(10, 10)
// true

is_eq(38492948403840248034824037496494864917349749247947249749327482479, 
      38492948403840248034824037496494864917349749247947249749327482479)
// false
      

Also see:

Core Module Index | Contents