define null

Optimization of Download size: One: Compression tool compression ESC-1.14 E:\esc-1.14>cscript esc.wsf-l 4-ow E:\js\src.js E:\js\new.js -L Leval level [0-4] 0 Merge multiple js, 1 go to comment 2 go to space 3 Remove line 4 simplify variable

Optimization of Download size: One: Compression tool compression ESC-1.14 E:esc-1.14>cscript esc.wsf-l 4-ow e:jssrc.js e:jsnew.js -L Leval level [0-4] 0 Merge multiple js, 1 go to comment 2 go to space 3 Remove line 4 simplify variable naming

2. Operation of pointer variable (1) Assignment operation The assignment operation of a pointer variable has the following several forms:① pointer variable initialization assignment, as described earlier. ② assigns the address of a variable to a

1.nil >defines the ID of a null instance. Defines an instance that is empty, pointing to an empty pointer to an object in OC. > Sample code: NSString *somestring = nil; Nsurl *someurl = nil; ID someobject = nil; if (Anotherobject = = nil)//do

topoic= Dynamic Storage Allocation In the array chapter, it was introduced that the length of several groups was predefined and fixed throughout the program. Dynamic array types are not allowed in C language. For example: int n;scanf ("%d", &n);

This article mainly introduces the iOS in Nil, Nil, NULL, Nsnull detailed information, the need for friends can refer to the OBJC inside a few empty value symbols will almost kill me, these basic things should be clear to the line, in order to

[Example 7.14] set up the list above, delete the node, insert the function of the node together, build a function to output all the nodes, and then call them with the main function.#define NULL 0#define TYPE struct STU#define LEN sizeof (struct

One of the easiest ways to do this is to reverse input and then use the "root right left" sequence to build two-prong trees. *********************************/ /**//**********gamesduan*********/ /**//**********bitreeinlast*********/ #include

Design one, global name space All the global variables and functions in the routing simulation system are implemented in a name space. Name space: Netsource Name Space variables: #define NULL 0 Network Device Type Table Enum Netelementtype{fiber=1,

1, the link is to determine whether there is a loop? (1) Loop definition: 1-2-3-4-5-6-7 | | ----8 As in the case above, it means that there is a loop. (2) solve the idea: Description: Use the speed pointer, the slow pointer each time only