[JASS] Do I need to null these locals?

[Geshishouhu]

function example takes nothing returns nothing
    local unit u
    local real r
    local integer i
    if check == true then
        set u = GetAttacker()
        set r = 1.50
        set i = 2
        //do actions....
        set u=null
    endif
endfunction

Do I need to null the unit variable "u" outside of the "if" condition? I mean if "check == false", do i still need to null the unit variable "u"? Such as the following:

function example takes nothing returns nothing
    local unit u
    local real r
    local integer i
    if check == true then
        set u = GetAttacker()
        set r = 1.50
        set i = 2
        //do actions....
        set u=null
    endif
    set u = null // do i need this? I dont think so but Im not sure...
endfunction

 

[Wrda]

No, only if it was initialized. Like this:

local unit u = GetAttacker()

 

[Bannar]

Additionaly, remember that you need only to null handle locals, leave integrals, reals and booleans alone.

If you respond to handle like unit via GetTriggeringUnit() (or similar getters) just up to 2 times, you can actually omit declaring local variable and use that getter instead. Cost of delaring local, initializing it and nulling is similar to one when 2 calls are performed.
Of course, this is also a matter of taste and your personal workflow preference.

 

[Geshishouhu]

No, only if it was initialized. Like this:

local unit u = GetAttacker()

Additionaly, remember that you need only to null handle locals, leave integrals, reals and booleans alone.

If you respond to handle like unit via GetTriggeringUnit() (or similar getters) just up to 2 times, you can actually omit declaring local variable and use that getter instead. Cost of delaring local, initializing it and nulling is similar to one when 2 calls are performed.
Of course, this is also a matter of taste and your personal workflow preference.

Aight, thnx both of you.

 

[Malhorne]

if check == true -> if check

 

[Geshishouhu]

if check == true -> if check

Got it.