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What is %0|%0 and how does it work? - Stack Overflow
@Pavel: What a .bat file does is: read instruction, at the end of file terminate. If you run %0: Process 1: starts, run %0 (thus create process 2); then die Process 2: starts, run %0 (thus create process 3); then die [...] you alway have at most 2 process running because the creator will die.

What is the difference between NULL, '\\0' and 0?
NULL is not guaranteed to be 0 -- its exact value is architecture-dependent. Most major architectures define it to (void*)0. '\0' will always equal 0, because that is how byte 0 is encoded in a character literal. I don't remember whether C compilers are required to use ASCII -- if not, '0' might not always equal 48.

What is the difference between 0.0.0.0, 127.0.0.1 and localhost?
0.0.0.0 has a couple of different meanings, but in this context, when a server is told to listen on 0.0.0.0 that means "listen on every available network interface". The loopback adapter with IP address 127.0.0.1 from the perspective of the server process looks just like any other network adapter on the machine, so a server told to listen on 0 ...

c++ - What does '\0' mean? - Stack Overflow
The \0 is treated as NULL Character. It is used to mark the end of the string in C. In C, string is a pointer pointing to array of characters with \0 at the end. So following will be valid representation of strings in C. char *c =”Hello”; // it is actually Hello\0 char c[] = {‘Y’,’o’,’\0′};

factorial - Why does 0! = 1? - Mathematics Stack Exchange
$\begingroup$ The theorem that $\binom{n}{k} = \frac{n!}{k!(n-k)!}$ already assumes $0!$ is defined to be $1$. Otherwise this would be restricted to $0

boolean - In JavaScript, why is "0" equal to false, but when tested by ...
So string zero "0" is converted to Number data type and boolean false is converted to Number 0. So "0" == false // true. Same applies to ` false == "0" //true === Strict equality check evaluates the arguments with the original data type "0" === false // false, because "0" is a string and false is boolean. Same applies to . false === "0 ...

c++ - What does (~0L) mean? - Stack Overflow
0L is a long integer value with all the bits set to zero - that's generally the definition of 0. The ~ means to invert all the bits, which leaves you with a long integer with all the bits set to one. In two's complement arithmetic (which is almost universal) a signed value with all bits set to one is -1.

What do $? $0 $1 $2 mean in shell script? - Stack Overflow
A positional parameter is a parameter denoted by one or more digits, other than the single digit 0. Positional parameters are assigned from the shell’s arguments when it is invoked, and may be reassigned using the set builtin command.

sql - How to find any variation of the number zero; 0, 0.0, 00.00, 0. ...
Assuming the assignment is to exclude all strings that consist entirely of zero's, at most one decimal point and possibly leading and/or trailing spaces, here is one way to do it, which requires only standard string functions (and therefore should be faster than any regular-expression solution).

What is the @0 used for in SQL queries? - Stack Overflow
The @ symbol represents a parameter. The word after it, or in this case the number after it, is the name of the parameter.

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