How to pass two arguments to a macro?
Thus, passes two arguments to macro: array [x = y and x + 1]. If you want to supply array [x = y, x + 1] as an argument, you can write it as array [ (x = y, x + 1)], which is equivalent C code.
Is there a way to detect an empty macro argument?
In particular, the case that __VA_ARGS__ is empty corresponds exactly to the outcome _ISEMPTY (0, 0, 0, 1). All other outcomes will indicate that it was non-empty. We will detect this case with the following helper macro. and we leave all the other 15 cases undefined.
How to create an Excel VBA API Token?
Dim hReq As Object, Json As Dictionary Dim sht As Worksheet Set sht = Sheet1 Dim strUrl As String strUrl = “https://app.asana.com/api/1.0/users/me” Set hReq = CreateObject (“MSXML2.XMLHTTP”) With hReq .Open “GET”, strUrl, False .Send End With Dim response As String response = hReq.ResponseText MsgBox response
When do you change the number of arguments in a macro?
The number of arguments you give must match the number of parameters in the macro definition. When the macro is expanded, each use of a parameter in its body is replaced by the tokens of the corresponding argument. (You need not use all of the parameters in the macro body.)
What are the arguments to a macro in C?
macro (array[x = y, x + 1]) passes two arguments to macro: array[x = y and x + 1]. If you want to supply array[x = y, x + 1] as an argument, you can write it as array[(x = y, x + 1)], which is equivalent C code. All arguments to a macro are completely macro-expanded before they are substituted into the macro body.
Can a macro be left out of the preprocessor?
You can leave macro arguments empty; this is not an error to the preprocessor (but many macros will then expand to invalid code). You cannot leave out arguments entirely; if a macro takes two arguments, there must be exactly one comma at the top level of its argument list.
How are the arguments to a macro expanded?
All arguments to a macro are completely macro-expanded before they are substituted into the macro body. After substitution, the complete text is scanned again for macros to expand, including the arguments. This rule may seem strange, but it is carefully designed so you need not worry about whether any function call is actually a macro invocation.