command-line-arguments

问题 Following this post, where I have found a temporary workaround for my other problem, I want to know if I can replace the int argc, char** argv with a std::vector<std::string> variable/object. Consider the imaginary code: #include <iostream> #include <CloseLibrary> void someFunction(int argc, char** argv){ for (int i = 0; i < argc; ++i) { std::cout << argv[i] << std::endl; } } int myFunc(int argc, char** argv){ someFunction(argc, argv); return 0; } where the CloseLibrary is a closed library

问题 This question already has answers here : 'strcpy' with 'malloc'? (6 answers) Closed 18 days ago . I am taking command line argument which I am copying to my character pointer. but its giving me an error. int main(int argc, char *argv[]) { char *cmdarg; if(argc>1) strcpy(cmdarg, argv[1]); else cmdarg = NULL; return 0; } This gives me Segmentation fault (core dumped) 回答1: You did not allocate memory where you are going to copy the argument pointed to by the expression argv[1] . Try the

问题 I need a library which can take command line options of the form java -jar --aaa=a --bbb=b ---ccc=c and return an array whose values can be accessed as argsArray['aaa'], argsArray['bbb'] etc. Is there some library with examples to do this? 回答1: A great parser for command line options in Java is the Apache Commons CLI. Options can have arguments or not, can be optional or required, and you can set up descriptions for each for usage help. A brief example usage: public static void main(String[]

问题 I need a library which can take command line options of the form java -jar --aaa=a --bbb=b ---ccc=c and return an array whose values can be accessed as argsArray['aaa'], argsArray['bbb'] etc. Is there some library with examples to do this? 回答1: A great parser for command line options in Java is the Apache Commons CLI. Options can have arguments or not, can be optional or required, and you can set up descriptions for each for usage help. A brief example usage: public static void main(String[]

问题 I'm hoping someone can explain why Directory.GetCurrentDirectory() returns different results based on how I pass my command line arguments to the application (running with args vs dragging a folder over the app.exe) To jump right into it consider this piece of code: public class Program { static void Main(string[] args) { Console.WriteLine("The current directory is {0}", Directory.GetCurrentDirectory()); if(args != null && args.Any()) Console.WriteLine("Command line arguments are {0}", String

问题 I would like to make a module that makes it very simple to build click commands that share a lot of options. Those options would be distilled into a single object that is passed into the command. As an illustrative example: from magic import magic_command import click @magic_command('Colored') @click.option('--color') def cmd(magic, color): pass The total command would then have many --magic-... options that go into the magic object passed into cmd . I was able to achieve that using the

问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 12 days ago . To solve my problem here, I want to know if/how I can define the second variable of the command line arguments in a format other than char** argv or char* argv[] . The reason is that pybind11 doesn't allow either of those in the inputs of a function. Here are the methods I have tried: Method 1:

问题 I am writing a commandline program that takes multiple subcommands, which take flags/arguments. The program should also take some 'global-flags' that are applicable to all subcommands. For examples: myProgram --configfile=~/.customrc UPLOADFILE --binary myfile.x myProgram --configfile=~/.customrc SEARCH --regex "[a-z]+" in this example, the subcommands are UPLOADFILE and SEARCH , and configfile is relevant to both subcommands, and binary and regex applicable to the specific subcommands. I

问题 I'm trying to run cProfile on my python script and all I care about is the total time it took to run. Is there a way to modify python -m cProfile myscript.py so the output is just the total time? 回答1: This answers supposes that you are using a Unix terminal. The fastest thing I can think of would be to redirect the results into a file with the ">" operator and then read the file with head, something like: python -m cProfile your_python_file.py > temp_file && head -n 3 temp_file So basically,

问题 When passing wildcard arguments to a Perl script on *nix systems, like $ perl script.pl *.txt shells like Bash will expand all wildcard ( * , ? , [] ) matches, consequently populating @ARGV with all matches. Windows CMD, however, doesn't perform such an expansion before running the Perl interpreter. Is it possible to get Perl to handle this expansion internally to mimic *nix shells? 回答1: Core module File::DosGlob provides the tools to expand wildcards in the manner a Windows user would expect