Questions tagged [macros]
6156 questions
1
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3
answer
58
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Advanced symbol-macrolet
Suppose I have a class class with slots first and second. Inside my function I can bind a variable to one of those slots like
(symbol-macrolet ((var (first cls)))
....)
Obviously I can also bind the second slot to smth.
Questions is, let's say that first and second are either some number or nil. Le...
2
votes
1
answer
31
Views
How to generate a pre-proccessor definition using a macro?
I want to dynamically create pre-proccessor literal strings where part of the string is created by some arithmetic, for example: math(x) x - 0x1234. The generated definitions would be made by the macro:get_tex_uniform_name(unit), and the results would be the same values as the following numerically...
1
votes
1
answer
50
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Is there an elegant way in Scala to define an asynchronous API based on a synchronous one?
I suspect the answer is NO, but thought I would ask anyway.
Given something like
trait foo {
def sum(a: Int, b: Int): Int
}
Is there some Scala magic I can do to produce, or implicitly define
trait fooAsync {
def sum(a: Int, b: Int): Future[Int]
}
or do I just have to brute force it, and define fooA...
1
votes
1
answer
52
Views
Using macro with variables in c
I have a flat C file including ctype.h where i cant figure out how a macro works. There is this macro
#define da_dim(name, type) type *name = NULL; \
int _qy_ ## name ## _p = 0; \
int _qy_ ## name ## _max = 0
I thought it should define the type of a given value. So for example i could wri...
1
votes
2
answer
60
Views
Define a function which function name is masked by a macro
Sometimes, it can be handy to mask a function by a macro of same name.
In this contrived example, the macros makes it possible to insert additional verification while calling function().
int function(int i);
#define function(i) ( assert(i>0), function(i) )
Other more common usages make the macro tr...
1
votes
1
answer
43
Views
Constant value of __TIME__ in whole program [duplicate]
This question already has an answer here:
C++ __TIME__ is different when called from different files
3 answers
If I have a C program consisting of multiple C source files that each use the preprocessor directives __DATE__ and __TIME__, is there any way I can make sure that the value is always the s...
1
votes
4
answer
72
Views
What happens if I redefine a macro in C without undef directive [duplicate]
This question already has an answer here:
#define many times without #undef，is it legal？
4 answers
What happens when a C preprocessor macro is defined twice?
3 answers
I want to know the severity of the warning that my compiler is throwing for the 'macro MACRO_NAME redefined'. It is redefined...
1
votes
2
answer
97
Views
How can I macro #define a static method call in C++?
I am trying to write software that can behave differently based on whether or not a certain component should be simulated in software or execute on real hardware. However, GCC complains that the Scope resolution operator (::) cannot be used in a macro, so my question is: is it possible to define a m...
1
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1
answer
108
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How to check Clojure, macro specs?
If I try to check a macro spec with clojure.spec.test.alpha, no tests are run, but if I define the same macro as a function with the same spec, a sequence of tests are run against the function. I can always generate parameters to unit test the macro, but is there a way to get that for free with spe...
1
votes
1
answer
56
Views
How to print the name of a recursive lambda template?
For debug purpose, would it be possible to use any macro to print the name of a recursively defined lambda inside a class template function? For example
template
class X{
public:
X();
//rest of declaration
private:
//rest of declaration
};
template X::X(){
functionsomeLambda = [] (){
//recursive d...
1
votes
0
answer
189
Views
How to use variadic macro arguments in both a function definition and a function call?
I'm trying to use a macro to define several similar functions based on the macro's parameters. However the number and types of parameters that the resulting function needs to take isn't the same across all of the functions, but I also need to pass all of the function's arguments into another variadi...
1
votes
1
answer
257
Views
Scala macros: generate code based on file contents
I would like to generate scala classes based on some files.
Placement of the files doesn't matter (it can be resources folder or files can be placed just near my scala source files).
How can I read them when scala macro is executed? (I use StaticAnnotation's inline def apply(defn: Any): Any method)...
0
votes
1
answer
46
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Define macros with condition in C++
I found some existing answer on SO, but I actually don't understand how does everything there works.
Basically, I want to define a macro in if/switch condition
if (condition)
{
#define SOME_MACRO
}
So, if some condition is true, there will be defined some new macro.
But, as for now, it just defines...
1
votes
2
answer
39
Views
vbscript macros shortening lines of code
so like in C++ where you can turn lines into one word (macro, yes?), is there a way to do this in vbscript?
e.g. instead of
Set shell = WScript.CreateObject('WScript.Shell')
Set sh = WScript.CreateObject('WScript.Shell').Exec('Firefox')
Can I shorten to something like
Set shell = MACRO.Exec('Firefo...
1
votes
0
answer
137
Views
Can I append a variable name to the setter and getter function names in a macro? [duplicate]
This question already has an answer here:
How to prefix/suffix identifiers within a macro? [duplicate]
3 answers
Can a Rust macro create new identifiers?
2 answers
Is it possible to declare variables procedurally using Rust macros?
2 answers
I need to generate setters and getters for my FFI code....
1
votes
1
answer
338
Views
Call a Macro in to another macro sas
I want call a macro in to another macro, this creates a Macro variable which I want used in the other macro. But the output is 'WARNING: Apparent symbolic reference TEST33 not resolved.'
data Base1;
input v1 v2 v3;
datalines;
1 7 8
;
run;
%let number = 6;
%Macro test1;
proc sql noprint;
select
c...
1
votes
2
answer
72
Views
Check existence of an entry in C pre-processor list
Is it possible to check for the existence of an entry in a list defined by X-macro? Given the example code below, I'd like the #if defined(GEORGE) condition to be true.
EDIT: without doing an explicit #define GEORGE, of course. I am hoping to have a way to check an entry in the list (in the pre-pr...
1
votes
1
answer
148
Views
How to stop an execution of a VIM macro in Idea Vim
I have the following problem: while experimenting with vim macros in Pycharm (I'm using Idea Vim plugin) - I typed a simple macro and make an editor to run it 100 times. The execution is extremely slow and I couldn't stop it using any of these pieces of advice. Has anyone had a similar problem and k...
1
votes
0
answer
74
Views
nested macros in C _generic macro
I'm currently making a small SIMD vector/matrix library in C. I'm looking to use the _generic macro feature in C11 to make function calls always take vector(__m128) arguments as pointers. Is there any way to have the _generic macro call another macro if a non-pointer argument is given and then have...
1
votes
0
answer
155
Views
C++ ignoring warnings in a block with macro
I am using gcc 6.2 and want to ignore warnings in a macro. My idea was to do as in the following demo code.
typedef char aligned_char __attribute__((__aligned__));
// disable warning using #pragma at the beginning of the macro
// and enable it back at the end
#define DISABLE_WARNING() \
_Pragma...
1
votes
0
answer
409
Views
CATIA macro from python
I would like to use my macro (.CATScript) to open the catia interface and make the changes listed in the macro script to the .CATpart and give output as .stp file. Is it possible to use python to realise this function?
There was an example in Run a Catia macro with a python script, but it didn't wo...
1
votes
0
answer
309
Views
Automatically scroll down browser and click button, on a loop (Chrome)
I've never used browser macros, before I dive deeper into some rabbit hole I'm wondering if there's an easy way in Chrome to write a script that will: scroll down to the bottom of a page, click a 'Load More' button, wait 10s and then scroll down to the bottom of the page, and click the Load More but...
1
votes
0
answer
37
Views
Resolving Nested macro linking error
I am getting a linking error because a function is declared in a .h file but its definition is commented.
Below is the linking error:
--- Linking Error ---
Error: L6218E: Undefined symbol clk_SetHMSSAPMFreqPlan (referred
from VVDRV_clk_glue.o).
Now, the file where the function is being called has...
1
votes
1
answer
184
Views
How does the new (probably in 4.17) linux kernel max macro work?
This lwn article describes the new implementation of the max macro
in the linux kernel:
https://lwn.net/Articles/750306/#Comments
The macro has been changed to evaluate to a constant expression if
it is used with constant expressions. The problem was that -Wvla
triggers if an array length is not a c...
1
votes
1
answer
139
Views
Creating mixed recursive macro to create a HTML templating DSL
I'm new to Rust and even more to the macro engine, I'm trying to come up with a way of creating a DSL that I'll use for HTML templating that looks like the following,
h! {
foo(
'bar',
tag_with_parens(),
tag_without_parens,
'some other expression',
element(child),
),
'tags and strings can be sibling...
1
votes
0
answer
56
Views
Create a Msg box in Notepad++ Macros
I have a macro that finds 's and replaces few strings. Below is the code. What I want Notepad++ to do is to show a message box if it doesn't find the string '_last'. How to achieve this?
PS: I have found a very old post where it says that an older version of notepad++ shows a pop-up window on each...
1
votes
1
answer
21
Views
SAS distinct level
data test1;
input var1$ var2$ ;
datalines;
1 a
2 a
3 a
1 b
2 b
1 c
;
run;
How can I create a macro var that contains all levels of var2?
For example:
%Let new_var = a b c;
1
votes
1
answer
90
Views
Using macros that define version numbers in the form 10.0.0
I compile one of my C codes with a Mathematica C header file. Mathematica uses a macro to tell you which version you are using. The format is
#define WSMATHVERSION 10.0.0
I'm more familiar with this pattern of version numbering in macros,
// BOOST_VERSION % 100 is the patch level
// BOOST_VERSION...
1
votes
1
answer
53
Views
scala.meta.Lit.type does not take parameters
When I run the following:
import scala.meta._
class Test {
val x = q'1'
}
I get scala.meta.Lit.type does not take parameters val x = q'1'
scalameta_2.11:1.8.0
paradise_2.11.8:3.0.0-M7
I'm trying to get some basic macro examples working, specifically the 'Hello' example found here:
https://www.beyon...
1
votes
0
answer
29
Views
How can I record a drive's volume label at compile time?
At first, I thought I could just use the __FILE__ macro but it only gives me the drive letter and path of the current file, what I need is something that includes the volume label.
I know I can get the volume label using the GetVolumeInformation function but I really need the volume label of a driv...
1
votes
0
answer
28
Views
Single Stepping with Google Sheets Debugger
I have watched a few videos and read as many web pages about how to debug my Google Sheets Macro. Oddly, I can't get this ridiculously simple macro to work. It just takes the values in column A and sorts them to send duplicate values to the end. When I try to debug the macro using step into, the ste...
1
votes
1
answer
82
Views
How to use Google app script to automatically border line below When Value Changes
I want to add a border line below the row whenever column C value changes.
I haven’t touched macro for a long time, this is a script I put together but it doesn’t work as expected. Anyone know where the problem is? Thanks!
function underline() {
var spreadsheet = SpreadsheetApp.getActive();
var...
1
votes
0
answer
167
Views
Cython macro definition in structure
I'm using Cython to import a structure to python from C while there are some macro definitions which include functions. I just don't how to realize the structure in Cython.
typedef struct _SparMat {
int m, n;
int *rvec;
int *ridx;
double *rval;
int *cvec;
int *cidx;...
1
votes
1
answer
32
Views
Does visual studio has compilation mode with multiple drop down boxes?
I’m working with VisualStudio on a C++ project.
I have multiple solution configurations in my project. Each one has a different MACRO definition.
ConfigurationA: define A
ConfigurationB: define B
ConfigurationC: define C
Now I need a different orthogonal set of configurations with MACRO definitio...
1
votes
0
answer
30
Views
Scala 2.11 refined with scalatest MustMatchers and Await causes compiler error “trying to do lub/glb of typevar ?F[?T, ?B]”
I have been trying to use the refined with scalatest and am getting compiler errors at the 'typer' phase: trying to do lub/glb of typevar ?F[?T, ?B]
This is my best attempt at a minimalist reproduction of the issue using a self-contained ammonite script:
import $ivy.`eu.timepit::refined:0.9.0`
impor...
1
votes
2
answer
743
Views
Add a variable (column) in data set (SAS)
I can't find the solution for this simple problem: I want to add a colum/variable in my data set. This variable will always have the same value, stored in the macro variable &value. And I am in a macro so I don't know if it change anything... This is the step before merging 2 data step.
So far, here...
1
votes
2
answer
165
Views
how to get method body tree in scala macros
I am trying to convert scala object to js object
object SObject {
def foo(in:String):String = s'scalajs-$in'
}
val o = ScalaObjectToJSObjectMacro(SObject) // js.Dynamical.literal(foo = (in:String) => s'scalajs-$in')
in macro i am able to get all Methods of object(in.tpe.decls.toList) and then for...
1
votes
0
answer
191
Views
Passing an array to macros in Twig
I am trying to use twig macros to create re-usable snippets on html code that I insert back into my main template however I'm running into an issue when attempting to pass an array to my macro:
Macro call:
{{ wrapper.outputConclusionList(viewData['response']['Report']['ContactBullets']) }}
Macro fun...
1
votes
2
answer
68
Views
Saving significance of a regression
I am running several simple regressions and I wish to save the value of the significance (P > |t|) of a regression for a given coefficient in a local macro.
For example, I know that:
local consCoeff = _b[_cons]
will save the coefficient for the constant, and that with _se[_cons] I can get the standa...
1
votes
1
answer
690
Views
Overwriting Google sheets (for form response) rows if duplicate entered
So, I've been trying to figure out how to stop the duplicate rows appearing in my google sheets response output from a google form. If found this link which sounds like it does exactly what I want (Form Google Script Prevent Duplicates), but cannot for the life of me work out how to edit the given a...