syntax - What does %>% function mean in R? - Stack Overflow
2014年11月25日 · The funny percent-sign syntax is how R lets users define their own infix functions. An example of a built-in infix operator in R is +; the + in 1 + 2 actually does the function call `+`(1, 2) (you can see this by looking at the source code by typing in `+`).
What's the difference between __PRETTY_FUNCTION__, …
2010年12月8日 · constexpr const char* function_name() const noexcept; 6 Returns: If this object represents a position in the body of a function, returns an implementation-defined NTBS that should correspond to the function name. Otherwise, returns an empty string. where NTBS means "Null Terminated Byte String". Tested on GCC 11.3 Ubuntu 22.04.
What is the difference between a "function" and a "procedure"?
2009年4月6日 · A function is not just any old method that returns a value. Not so: In order for a method to be a real function it must return the same value always given a specific input. An example of a method that is not a function is the random method in most languages, because although it does return a value the value is not always the same.
javascript - var functionName = function() {} vs ... - Stack Overflow
2008年12月3日 · Arrow Function Expression (ES2015+) (which, like anonymous function expressions, don't involve an explicit name, and yet can create functions with names) Method Declaration in Object Initializer (ES2015+) Constructor and Method Declarations in class (ES2015+) Function Declaration. The first form is a function declaration, which looks like this:
what is the difference between function declaration and signature?
the name and the parameter-type-list (8.3.5) of a function, as well as the class, concept, concept map, or namespace of which it is a member. If a function or function template is a class member its signature additionally includes the cv-qualifiers (if any) and the ref-qualifier (if any) on the function or function template itself.
__FILE__, __LINE__, and __FUNCTION__ usage in C++
constexpr const char* function_name() const noexcept; 6 Returns: If this object represents a position in the body of a function, returns an implementation-defined NTBS that should correspond to the function name. Otherwise, returns an empty string. where NTBS means "Null Terminated Byte String".
How do function pointers in C work? - Stack Overflow
Function pointers become easy to declare once you have the basic declarators: id: ID: ID is a; Pointer: *D: D pointer to; Function: D(<parameters>): D function taking <parameters> returning; While D is another declarator built using those same rules. In the end, somewhere, it ends with ID (see below for an example), which is the name of the ...
language agnostic - What is a callback function? - Stack Overflow
2009年5月5日 · A callback function is a function you pass (as a reference or a pointer) to a certain function or object. This function or object will call this function back any time later, possibly multiple times, for any kind of purpose : notifying the end of a task; requesting comparison between two item (like in c qsort()) reporting progress of a process
C - function inside struct - Stack Overflow
This string of code is the same as the last example, but includes a... Sketchy implementation of functions inside structs. It declares a function placeholder (int (*factorial)()), which is then replaced by the factorial() function in the Init() function. This can create a partial implementation of a function inside a struct. 2) Just use C++.
JavaScript error: "is not a function" - Stack Overflow
Your LMSInitialize function is declared inside Scorm_API_12 function. So it can be seen only in Scorm_API_12 function's scope. If you want to use this function like API.LMSInitialize(""), declare Scorm_API_12 function like this: