Macro question - C / C++

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by: Andrew Dalke | last post by:

Here's a proposed Q&A for the FAQ based on a couple recent threads. Appropriate comments appreciated X.Y: Why doesn't Python have macros like in Lisp or Scheme? Before answering that, a...

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I think everyone who used Python will agree that its syntax is the best thing going for it. It is very readable and easy for everyone to learn. But, Python does not a have very good macro...

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Using a macro, can I change what type an object is being cast to?

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Using a macro, can I change what type an object is being cast to? I know, the initial respone to question might be an instinctive "ugly, don't even think about it!" or "don't use macros at all",...

C / C++

calling a macro with ommitted input parameter?

by: Spiro Trikaliotis | last post by:

Hello, assume I define a macro like #if <somecondition> # define MACRO(_x, _y) _x #else # define MACRO(_x, _y) _y #endif

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How could we get a macro name from a macro value such that in a header file #define a 100 #define b 200 now the source file will be such that the user gives 100 then the value is outputted as...

C / C++

is it possible to write such a macro?

by: fei.liu | last post by:

#define ONCFILE_ERR1(funcname, name) \ { \ #ifdef DEBUG\ cerr << __FILE__ << ":" << __LINE__ << " duplicated call to " << funcname << " " << name << endl; \ #endif \ } I want to have...

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Hi All I Have Quation About Macro's plz help why do we have # symbol before any macro line #define STOP 0 ... why con't we use the any other symbol like $, @,, plz answer if any one knows...

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by: krbyxtrm | last post by:

Hi is there a way to 'manage' function execution using macros? #define MY_CALL_MACRO(MacroName) { g_MacroStack.push_back(MacroName); <some code here...>} such that when i use the...

C / C++

How to pass COMMA as an operator into macro. (Not the FAQ).

by: pedroalves | last post by:

Hi all, This is not a question about how to #define COMMA , Please keep reading. Recently in binutils, we introduced a macro like this: #define STRING_COMMA_LEN(STR) \ (STR), ((STR) ?...

C / C++

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How do i turn on java script on a villaon, callus and itel keypad mobile phone

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Batch import of multiple excel files into the database

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In our work, we often receive Excel tables with data in the same format. If we want to analyze these data, it can be difficult to analyze them because the data is spread across multiple Excel files...

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Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel

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Is that possible of reading the .csv file in column wise and the column have different lengths ?

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This is the data of csv file 1 2 3 1 2 3 1 2 3 1 2 3 2 3 2 3 3 the lengths should be different i have to store the data by column-wise with in the specific length. suppose the i have to...

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How to build RAID in BIOS?

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There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...

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What is ONU?

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ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...

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Problem With Comparison Operator <=> in G++

by: Oralloy | last post by:

Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers,...

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