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- Dictionarycom·bine
verb
- 1. unite; merge: "the band combines a variety of musical influences" Similar Opposite
noun
- 1. a group of people or companies acting together for a commercial purpose: "a powerful industrial combine"
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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. 375k 114 1.3k 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.
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".
Oct 26, 2021 · Jan 22, 2016 at 9:47. 8. @user3017748, jalf's comment works if you want something to happen if either of the two conditions are not defined. If you want it to happen if neither of them are defined, you'd use an AND: #if !defined(CONDITION1) && !defined(CONDITION2). – cp.engr.
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 5, 2016 · propertyA: 1, propertyB: 2, // same property exists in objectB. propertyC: 3. propertyX: 'a', propertyB: 'b', // same property exists in objectA. propertyZ: 'c'. I want to update property of objectA if same key exist in both object. Means if key is same then it should take property of objectB.
Feb 19, 2018 · 7. #define directive can be followed by a C-like expression. In the expression, you can use + operator to concatenate strings (what you cannot actually use in C): #define InstallParameters Connection + " " + IPaddress + " " + DeviceName + " " + CustName. See also Inno Setup Preprocessor: Expression Syntax. Though it is helpful only partially.
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.
String literals can be concatenated this way "str1""str2". macro function can concatenate two string literals - #define STRCAT(str1, str2) str1##str2. And when it comes to variables, you use strcat() More efficient approach is to use string managing utilities such as GString. It keeps track of the end of string and it handles memory expansions ...
May 20, 2023 · You need expand __LINE__ in two levels, before passing it to #x. First of all, using operator # in a function-like macro, it has to be followed by a macro parameter but __LINE__ is not a parameter, so compiler complains it's a stray operator. On the other hand, __LINE__ itself is a macro and contains current line number, it should be expanded ...
