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object_id

object_id(x)

Get a unique integer id for x. object_id(x)==object_id(y) if and only if is(x,y).

Examples

In the Julia programming language, the function object_id(x) is used to obtain a unique integer ID for the object x. The object_id() function can be used to compare objects based on their identity rather than their value.

Here are some examples of how object_id() can be used:

1. Get the object ID of a variable:

   julia> x = 42;
   julia> object_id(x)
   140277007271616

   This example retrieves the unique ID for the variable x.

2. Compare object IDs:

   julia> a = [1, 2, 3];
   julia> b = [1, 2, 3];
   julia> object_id(a) == object_id(b)
   false

   In this example, even though a and b have the same values, their object IDs are different.

3. Check object identity:

   julia> c = a;
   julia> object_id(a) == object_id(c)
   true

   Here, c is assigned the reference to a, so their object IDs are the same.

It is important to note that object_id(x) == object_id(y) if and only if is(x,y). This means that the object IDs of two objects will be equal if and only if they are identical.

Please keep in mind that object_id() is an internal function primarily used for debugging and low-level operations. It may not always provide meaningful information in regular programming tasks.

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