What exactly do *args and **kwargs mean? According to the Python documentation, from what it seems, it passes in a tuple of arguments. def foo (hello, *args): print (hello) for each in args:...

Feb 28, 2020 · ARG before the first FROM are only useful to allow variables in the FROM line and to supply defaults, but can't be used otherwise. This is further discussed under Understand how ARG …

The syntax is the * and **. The names *args and **kwargs are only by convention but there's no hard requirement to use them. You would use *args when you're not sure how many arguments might be …

The variables are named argc (argument count) and argv (argument vector) by convention, but they can be given any valid identifier: int main(int num_args, char** arg_strings) is equally valid.

I am trying to pass a list as an argument to a command line program. Is there an argparse option to pass a list as option? parser.add_argument('-l', '--list', type=list, acti...

According to "docker build --help" the --build_arg is described as a list. it isn't really specifying a list if I have to repeat the entire argument over and over with a single value each time.

Feb 12, 2017 · .put((a, b, c) => controller.update(a, b, c)) Of course, what if we want 4 parameters, or 5, or 6? We don't want to write a new version of the function for all possible quantities of parameters. …

Feb 12, 2017 · I've just noticed a pattern (in git and the CommandLineParser lib for .NET) for verb-style command arguments, and wondering if someone can confirm: myprog dothis -a "someArg" -a --arg …

This answer is very useful, it actually shows how docker-compose can be used with --build-arg on command-line, you can define your ARG in Dockerfile, docker-compose.yml - the :args array defined …

I am using RUN instruction within a Dockerfile to install a rpm RUN yum -y install samplerpm-2.3 However, I want to pass the value "2.3" as an argument. My RUN instruction should look something li...