javascript - What does $(function() {} ); do? - Stack Overflow
$ = function() { alert('I am in the $ function'); } JQuery is a very famous JavaScript library and they have decided to put their entire framework inside a function named jQuery . To make it easier for people to use the framework and reduce typing the whole word jQuery every single time they want to call the function, they have also created an ...
syntax - What does %>% function mean in R? - Stack Overflow
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__, …
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.
How do function pointers in C work? - Stack Overflow
2009年5月8日 · 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 ...
__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".
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:
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
function is not defined error in Python - Stack Overflow
2016年9月5日 · # You say it's down there, but I haven't gotten there yet! pyth_test(1,2) # Our function is pulled in here from myfunction import pyth_test Now let's see what happens: $ python program.py Traceback (most recent call last): File "program.py", line 3, in <module> pyth_test(1,2) NameError: name 'pyth_test' is not defined
What does ** (double star/asterisk) and * (star/asterisk) do for ...
2008年8月31日 · So we now know function definitions with positional as well as keyword arguments. Now let us study the '*' operator and '**' operator. Please note these operators can be used in 2 areas: a) function call. b) function definition. The use of '*' operator and '**' operator in function call. Let us get straight to an example and then discuss it.