java中null是常量嗎
Julia| C_NULL常數 (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.
C_NULL是Julia編程語言中Ptr {Nothing}類型的常量,它表示空指針值,該值在調用外部代碼時用于C空指針。
Syntax:
句法:
C_NULL
Example:
例:
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.
在此示例中,我們采用變量x并將其分配給C_NULL 。 我們正在使用println()函數和typeof()函數來打印x的值和類型。
# Julia example of C_NULL
x = C_NULL
println("x: ", x)
println("typeof(x): ", typeof(x))
Output
輸出量
x: Ptr{Nothing} @0x0000000000000000
typeof(x): Ptr{Nothing}
Reference: Julia constants
參考: Julia常數
翻譯自: https://www.includehelp.com/julia/c_null-constant.aspx
java中null是常量嗎