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- Dictionaryduring/ˈdjʊərɪŋ/
preposition
- 1. throughout the course or duration of (a period of time): "the restaurant is open during the day"
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This can be done in GCC using the stringify operator "#", but it requires two additional stages to be defined first. #define XSTR(x) STR(x) #define STR(x) #x. The value of a macro can then be displayed with: #pragma message "The value of ABC: " XSTR(ABC) See: 3.4 Stringification in the gcc online documentation. How it works:
Mar 21, 2016 · @0A0D: it says, "you can't use a const int object as a case label (while a macro will work)". That's not intended to mean that any macro is a legal case label, or that using a macro somehow magically lets you use things in case labels that you otherwise could not.
Jan 26, 2012 · 1.) target_compile_definitions. If you are using CMake 3.X your first choice for adding a preprocessor macro should be target_compile_definitions. The reason you should prefer this approach over any other approach is because it granularity is target based. IE the macro will only be added to your exe/library.
Mar 14, 2012 · Use gcc's -E -dD option to dump #define directives along with preprocessing output. Then pipe that through grep to see only the lines you want: // test.c #include <stdlib.h> #include <stdio.h> #define ADEFINE "23" #include <string.h> int main(int argc, char *argv[]) { #undef ADEFINE #define ADEFINE 42 return 0; }
#define NEWMETHOD before you do the #ifdef check. Of course, then you wouldn't need to write the #ifdef in the first place. If you want to define the macro without changing the source code, you can pass it in during compilation with the -D flag, like this: g++ -DNEWMETHOD main.cpp Obviously, replace the specific compiler command, and file name.
you can set the types explicitly with pandas DataFrame.astype(dtype, copy=True, raise_on_error=True, **kwargs) and pass in a dictionary with the dtypes you want to dtype. here's an example: import pandas as pd. wheel_number = 5. car_name = 'jeep'. minutes_spent = 4.5. # set the columns. data_columns = ['wheel_number', 'car_name', 'minutes_spent ...
Oct 17, 2014 · I have a quick question regarding printing the evaluated values of #defines using #pragma message. I'm using msvc++ in Visual Studio 2008.
There are a several ways of declaring variables in SQL*Plus scripts. The first is to use VAR, to declare a bind variable. The mechanism for assigning values to a VAR is with an EXEC call: SQL> var name varchar2(20) SQL> exec :name := 'SALES'. PL/SQL procedure successfully completed. SQL> select * from dept.
Sep 4, 2018 · I reformulate it. I first tred to use execute_process which permits to define OUTPUT_VARIABLE but the computations occur during generation, not during build. Then I try with add_custom_target and add_custom_command which does not propose OUTPUT_VARIABLE. –
Nov 13, 2018 · 13. Just add -Dxxx=yy on the command line (xxx the name of the macro and yy the replacement, or just -Dxxx if there is no value). It's not a Makefile command, it's part of the compiler command line options. It means, xxx is the name and yy is the value. For example, #define xxx (yy) is -Dxxx=yy.
