Difference between nil, NIL, and null in Objective-C
May 6, 2011 · 79 I want to know the difference between nil, NIL, and null. I've googled around and found this: nil -> null pointer to Objective-C object NIL -> null pointer to Objective-C class null -> null pointer …
go - What does nil mean in Golang? - Stack Overflow
Mar 14, 2016 · 187 In Go, nil is one of the predeclared identifiers and it is a zero value for pointers, interfaces, maps, slices, channels and function types, representing an uninitialized value. nil doesn't …
xml - What does i:nil="true" mean? - Stack Overflow
16 Maybe i:nil actually means xsi:nil, this means that the FirstName element is empty, i.e. does not have any content -- not even "". It refers to the nillable property in XML Schema.
What is the correct way to represent null XML elements?
xsi:nil is the correct way to represent a value such that: When the DOM Level 2 call getElementValue () is issued, the NULL value is returned. xsi:nil is also used to indicate a valid element with no content …
C++ nil vs NULL - Stack Overflow
Yes. It's NULL in C and C++, while it's nil in Objective-C. Each language has its own identifier for no object. In C the standard library, NULL is a typedef of ((void *)0). In C++ the standard library, NULL is …
Lua: What's the difference between null and nil? - Stack Overflow
Jul 9, 2015 · 24 nil is a value in the Lua language. null is a variable name. What value does it contain? You can easily check that. We cannot. If it turns out to be nil, then using null is pointless, probably a …
How do I fix "attempt to index nil with 'character'" (Roblox)
Jul 20, 2022 · What it means is you attempted to index a value (that is nil) with the string Character in the code you have presented you do this in 1 place Player.Character this mean Player is a nil value.
(nil) pointer in C/C++ - Stack Overflow
Jan 20, 2011 · This is going to distinguish a null-pointer and print (nil) because it is a special value in the context of a pointer. If you want to output 0 for a null pointer, cast the pointer to an integer and use …
xsd - Why is it called nillable? - Stack Overflow
75 In an XML schema you can mark an element as nillable meaning it can take an explicit NULL value. See nillable and minOccurs XSD element attributes for a great explanation. What I'm curious about is …
Do all programming languages have a clear concept of NIL, null, or ...
Apr 21, 2011 · 2 No, not all languages support the "null/nil/Nothing" concept; also in some case such support is limited to a simple convention whereby an unknown/undefined value is represented by a …