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Argparse: Required argument 'y' if 'x' is present
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No, there isn't any option in argparse to make mutually inclusive sets of options.
The simplest way to deal with this would be:
if args.prox and (args.lport is None or args.rport is None):
parser.error("--prox requires --lport and --rport.")
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How to use support FileProvider for sharing content to other apps?
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Using FileProvider from support library you have to manually grant and revoke permissions(at runtime) for other apps to read specific Uri. Use Context.grantUriPermission and Context.revokeUriPermission methods.
For example:
//grant permision for app with package "packegeName", ...
Best practices around generating OAuth tokens?
...ere are any best practices for creating significantly secure tokens (especially Token/Secret combinations).
1 Answer
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Getting A File's Mime Type In Java
...tension.
– shmosel
Jul 15 '16 at 22:11
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show 11 more comments
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'any' vs 'Object'
...ate an error telling you exactly that. If you use any instead you are basically telling the transpiler that anything goes, you are providing no information about what is stored in a - it can be anything! And therefore the transpiler will allow you to do whatever you want with something defined as an...
Maintain git repo inside another git repo
... Git submodules.
Git addresses this issue using submodules. Submodules allow you to keep a Git repository as a subdirectory of another Git repository. This lets you clone another repository into your project and keep your commits separate.
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Nginx location priority
...th the "=" prefix that match the query exactly. If found, searching stops.
All remaining directives with conventional strings. If this match used the "^~" prefix, searching stops.
Regular expressions, in the order they are defined in the configuration file.
If #3 yielded a match, that result is used...
Is there any way to put malicious code into a regular expression?
...o solve. These may only show up on particular input data, but one can generally create one wherein this doesn’t matter.
Which ones these are will depend somewhat on how smart the regex compiler you’re using happens to be, because some of these can be detected during compilation time. Regex com...
Why is it possible to recover from a StackOverflowError?
...of the currently active function
delete its stack frame, proceed with the calling function
abort the execution of the caller
delete its stack frame, proceed with the calling function
and so on...
... until the exception is caught. This is normal (in fact, necessary) and independent of which except...
public friend swap member function
...truct vector
{
void swap(vector&) { /* swap members */ }
};
Naturally, then, our class should too, right? Well, not really. The standard library has all sorts of unnecessary things, and a member swap is one of them. Why? Let's go on.
What we should do is identify what's canonical, and w...