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What is the difference between 0. 0. 0. 0, 127. 0. 0. 1 and localhost? 127 0 0 1 is normally the IP address assigned to the "loopback" or local-only interface This is a "fake" network adapter that can only communicate within the same host It's often used when you want a network-capable application to only serve clients on the same host A process that is listening on 127 0 0 1 for connections will only receive local connections on that socket "localhost" is
Is $0$ a natural number? - Mathematics Stack Exchange Is there a consensus in the mathematical community, or some accepted authority, to determine whether zero should be classified as a natural number? It seems as though formerly $0$ was considered i
What is %0|%0 and how does it work? - Stack Overflow %0 will never end, but it never creates more than one process because it instantly transfers control to the 2nd batch script (which happens to be itself) But a Windows pipe creates a new process for each side of the pipe, in addition to the parent process The parent process can't finish until each side of the pipe terminates So the main program with a simple pipe will have 3 processes You
What is the difference between NULL, \0 and 0? - Stack Overflow This 0 is then referred to as a null pointer constant The C standard defines that 0 cast to the type void * is both a null pointer and a null pointer constant Additionally, to help readability, the macro NULL is provided in the header file stddef h Depending upon your compiler it might be possible to #undef NULL and redefine it to something
Regex that accepts only numbers (0-9) and NO characters By putting ^ at the beginning of your regex and $ at the end, you ensure that no other characters are allowed before or after your regex For example, the regex [0-9] matches the strings "9" as well as "A9B", but the regex ^[0-9]$ only matches "9"
c - why is *pp [0] equal to **pp - Stack Overflow That's why when you dereference pp[0] explicitly, with *pp[0], you are dereferencing it effectively twice: First you look at the contents of the address 0x2000, which is 0x1000, and then you dereference that in order to read the memory at 0x1000
What does javascript:void (0) mean? - Stack Overflow 28 Web Developers use javascript:void(0) because it is the easiest way to prevent the default behavior of a tag void(*anything*) returns undefined and it is a falsy value and returning a falsy value is like return false in onclick event of a tag that prevents its default behavior