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  1. dockerfile - How do I set environment variables during the "docker ...

    When building a Docker image from the commandline, you can set ARG values using –build-arg: $ docker build --build-arg some_variable_name=a_value Running that command, with the …

  2. python - Use of *args and **kwargs - Stack Overflow

    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 …

  3. How can I pass a list as a command-line argument with argparse?

    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...

  4. python - What do *args and **kwargs mean? - Stack Overflow

    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:...

  5. c++ - What does int argc, char *argv [] mean? - Stack Overflow

    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.

  6. Python Argparse conditionally required arguments - Stack Overflow

    Sep 2, 2014 · Here is a simple and clean solution with these advantages: No ambiguity and loss of functionality caused by oversimplified parsing using the in sys.argv test. No need to …

  7. How to get an environment variable value into Dockerfile during …

    Mar 19, 2019 · The ARG defines a variable to be used inside the dockerfile in subsequent commands. The ENV defines an environment variable which is passed to the container.

  8. Argparse: Required arguments listed under "optional arguments"?

    Parameters starting with - or -- are usually considered optional. All other parameters are positional parameters and as such required by design (like positional function arguments). It is possible …

  9. 国内有什么关于ARG游戏的组织或者是网站嘛? - 知乎

    3:展望国内ARG游戏发展的前途 随着人们生活水平的不断提高,以及科技的飞速发展,ARG游戏在国内也开始受到越来越多人的关注。 ARG游戏给人们带来的不仅仅是游戏的乐趣,还有一 …

  10. linux - ARG_MAX は何故必要?(あるいは、ARG_MAX はどう決 …

    Jul 22, 2018 · Linux では、シェルでコマンドに渡す引数の数に上限があります。たとえばたくさんのファイルに対して foobar * のようにコマンドを実行しようとして Argument list too long …