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Parsing command-line arguments in C?
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To my knowledge, the three most popular ways how to parse command line arguments in C are:
Getopt (#include <unistd.h> from the POSIX C Library), which can solve simple argument parsing tasks. If you're a bit familiar with b...
The type 'string' must be a non-nullable type in order to use it as parameter T in the generic type
...from a specific struct (Nullable<Nullable<...>>)? - Edit I see now apparently it is special - Compile Error...must be a non-nullable value type....
– Joshua Enfield
Feb 11 '12 at 0:20
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How to share my Docker-Image without using the Docker-Hub?
...e reference, the link to the docker registry image is outdated. You should now use Docker Registry 2.0 and the code on github/docker/distribution
– RoelAdriaans
Jun 6 '15 at 17:31
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Merge up to a specific commit
I created a new branch named newbranch from the master branch in git. Now I have done some work and want to merge newbranch to master ; however, I have made some extra changes to newbranch and I want to merge newbranch up to the fourth-from-the-last commit to master .
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Pull request vs Merge request
...ed me of the example when I made the small report to let other colleagues know how git works.
– Ravi Yadav
Jul 18 '19 at 5:31
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Why switch is faster than if
...ic byte-code offset. Thus, when you give the statement an offset of 3, it knows to jump ahead 3 to find the correct branch.
Lookup switch uses a binary search to find the correct code branch. This runs in O(log n) time, which is still good, but not the best.
For more information on this, see here:...
URL matrix parameters vs. query parameters
...is a very useful feature of uri templates; just because most people don't know about or use it doesn't mean it's some evil conspiracy by angular devs to inject useless complexity into your life.
– Ajax
Mar 22 '17 at 20:36
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Python argparse mutual exclusive group
...ee why the first two arguments are compatible and the last one isn't.
So now I run parser.parse_args() and check it's content:
args = parser().parse_args()
print args.aggregation
if args.aggregation and (args.query or args.fields):
print "-a and -q|-f are mutually exclusive ..."
sys.exit...
Keystore type: which one to use?
...'t have the private key for them).
This has changed in Java 8, so you can now have certificate-only entries in PKCS12 stores too. (More details about these changes and further plans can be found in JEP 229: Create PKCS12 Keystores by Default.)
There are a few other keystore types, perhaps less fre...
C++ preprocessor __VA_ARGS__ number of arguments
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....but now is standard in C++0x and should've been longer ago because it allows a great way to guard varadic functions from corrupted calls (ie, you can pass values after the varadic items. This is actually a way of getting the coun...