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How to get my IP address programmatically on iOS/macOS?
...s). Loopback addresses now returned, but its easy for you to uncomment the test to exclude them yourself.
EDIT2: (by some unknown person): Improved further March 13, 2015: In case the user uses a VPN (regardless over WiFi or Cellular), the previous code would have failed. Now, it works even with VP...
What is PECS (Producer Extends Consumer Super)?
...d when you both get and put.
Example in Java:
class Super {
Object testCoVariance(){ return null;} //Covariance of return types in the subtype.
void testContraVariance(Object parameter){} // Contravariance of method arguments in the subtype.
}
class Sub extends Super {
@Override
...
What is the difference between NaN and None?
...nswer the second question:
You should be using pd.isnull and pd.notnull to test for missing data (NaN).
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Python : List of dict, if exists increment a dict value, if not append a new dict
...urls)
If you really need to do it the way you showed, the easiest and fastest way would be to use any one of these three examples, and then build the one you need.
from collections import defaultdict # available in Python 2.5 and newer
urls_d = defaultdict(int)
for url in list_of_urls:
urls...
What are dictionary view objects?
...ike", in that they don't support indexing, so what you can do with them is test for membership and iterate over them (because keys are hashable and unique, the keys and items views are more "set-like" in that they don't contain duplicates).
You can store them and use them multiple times, like the li...
How can I make git accept a self signed certificate?
...ts/ directory and it'd efficiently sort out everything you need. I haven't tested this, mind you, but it might allow you go use a --global with a whole bunch of certs. Worth testing, however.
– Christopher
Dec 16 '14 at 1:27
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Why maven? What are the benefits? [closed]
...r.
First, why do you use Maven like this? I don't. I use my IDE to write tests, code until they pass, refactor, deploy, hot deploy and run a local Maven build when I'm done, before to commit, to make sure I will not break the continuous build.
Second, I'm not sure using Ant would make things much...
What are the security risks of setting Access-Control-Allow-Origin?
... It can even use your router directly as a DDoS node. (Most routers have test pages which allow for pings or simple HTTP server checks. These can be abused en masse.)
– Brad
Oct 31 '16 at 0:12
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What is the difference between Python's list methods append and extend?
...t thing is doing things the Right Way™.
It's conceivable that you might test timings on two comparable operations and get an ambiguous or inverse result. Just focus on doing the semantically correct thing.
Conclusion
We see that extend is semantically clearer, and that it can run much faster th...
Is there a performance difference between i++ and ++i in C?
...
So the "No" is true for the one compiler you tested with.
– Andreas
Jan 25 '11 at 8:59
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