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C_NULL Constant in Julia

Julia | C_NULL Constant: In this tutorial, we are going to learn about the C_NULL constant with examples in Julia programming language.
Submitted by IncludeHelp, on April 02, 2020

Julia | C_NULL Constant

C_NULL is a constant of Ptr{Nothing} type in Julia programming language, it represents the null pointer value, which is used for C Null Pointer while calling external code.

Syntax:

    C_NULL

Example:

In this example, we are taking a variable x and assigning it with C_NULL. We are printing the value and type of x using using println() function and typeof() function.

# Julia example of C_NULL

x = C_NULL

println("x: ", x)
println("typeof(x): ", typeof(x))

Output

x: Ptr{Nothing} @0x0000000000000000
typeof(x): Ptr{Nothing}

Reference: Julia constants