Search results
- Dictionarycombine
verb
- 1. join or merge to form a single unit or substance: "combine the flour with the margarine and salt" Similar Opposite
- 2. unite for a common purpose: "groups of teachers combined to tackle a variety of problems" Similar Opposite
noun
- 1. a group of people or companies acting together for a commercial purpose: "one of the world's biggest food and personal products combines"
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Mar 11, 2014 · 2. You can generally use the ## (double number sign) to concatenates two tokens in a macro invocation. However, since you have string literals jamming an already defined macro, you could just use spaces, else you could run into invalid preprocessing token. Also, you should escape your backslash. #define ID "valve1".
Mar 10, 2011 · If they're both strings you can just do: #define STR3 STR1 STR2. This then expands to: #define STR3 "s" "1". and in the C language, separating two strings with space as in "s" "1" is exactly equivalent to having a single string "s1". edited Nov 3, 2020 at 8:12. Ciro Santilli OurBigBook.com. 378k 115 1.3k 1.1k.
Jul 21, 2016 · The compiler will automatically concatenate adjacent strings: #define ROOT_PATH "/home/david/". #define INPUT_FILE_A ROOT_PATH "data/inputA.bin". Or more generic: #define INPUT_FILE_DETAIL(root,x) root #x. #define INPUT_FILE(x) INPUT_FILE_DETAIL(ROOT_PATH "data/", x) edited Nov 15, 2009 at 22:43. answered Nov 15, 2009 at 22:35.
How can I write a combine function for an R foreach() statement that uses itertools chunking such that I get the same result as using the R foreach() statement without itertools chunking? I have an R foreach() statement that performs a calculation and returns a list of three lists.
May 13, 2022 · A primary key consists of one or more columns (from that table). If a primary key consists of two or more columns it is called a composite primary key. It is defined as follows: CREATE TABLE voting (. QuestionID NUMERIC, MemberID NUMERIC, PRIMARY KEY (QuestionID, MemberID) ); The pair (QuestionID,MemberID) must then be unique for the table and ...
I want to do: #define VERSION XY123 #define PRODUCT MyApplication_VERSION so that PRODUCT is actually MyApplication_XY123. I have tried playing with the merge operator ## but with limited success...
Sep 23, 2014 · What they do is put everything on a single line, so the expanded macro will look something like. int main() {. #ifndef DEBUG_MODE ; #else cout ...; #endif. } This will not work very well with the preprocessor or the compiler. Instead you should switch the nesting, and use #ifndef first, and #define the macros in the inner level.
Sep 23, 2020 · The syntax of cons is very simple: (cons 'x 'y) just sticks together two things, for example the symbols 'x and 'y. By convention, a list is just a series of nested cons calls where the last element is the empty list. For example: (cons 'x (cons 'y '())) produces the two-element list '(x y) Following the above recommendations, this is how to ...
May 30, 2016 · 11. You can use multiline comments as a way to continue macro definitions from one line to another, instead of backslashes. As described in the C standard, §5.1.1.2/1, comments are reduced to a single space during translation phase 3, while preprocessing directives are executed in phase 4. In effect, that means that newline characters inside a ...
Oct 10, 2008 · Why use a preprocessor #define instead of a template? With variadic templates, even several token could be passed in. But I am hesitant to use this, as the static_cast back to std::ostringstream on the output of the << operand is a bit unsafe. It is a convention, that all the outputters return a referene to the original stream object, but this ...
