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What is the 'override' keyword in C++ used for? [duplicate]
... removed (not alternated). This is useful if the subclass is expecting a callback but it will never happen due to the library change, etc.
– Hei
Mar 11 '18 at 5:32
...
How could I use requests in asyncio?
I want to do parallel http request tasks in asyncio , but I find that python-requests would block the event loop of asyncio . I've found aiohttp but it couldn't provide the service of http request using a http proxy.
...
Email validation using jQuery
...ming more common this regex may need modifying .systems and .poker etc are all valid TLDs now but would fail the regex check
– Liath
Sep 5 '14 at 7:35
3
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How do I flag a method as deprecated in Objective-C 2.0?
...x is provided to mark methods as deprecated:
@interface SomeClass
-method __attribute__((deprecated));
@end
or:
#include <AvailabilityMacros.h>
@interface SomeClass
-method DEPRECATED_ATTRIBUTE; // or some other deployment-target-specific macro
@end
...
C++ Best way to get integer division and remainder
... experiment with g++ 6.3.0 on x86_64 revealed that with no optimization at all, you get two idivl instructions, but with -O1 or greater, you get one. As the manual says, “Without any optimization option … Statements are independent”.
– Tom Zych
Oct 15 '17...
How to go about formatting 1200 to 1.2k in java
...ng, String> suffixes = new TreeMap<> ();
static {
suffixes.put(1_000L, "k");
suffixes.put(1_000_000L, "M");
suffixes.put(1_000_000_000L, "G");
suffixes.put(1_000_000_000_000L, "T");
suffixes.put(1_000_000_000_000_000L, "P");
suffixes.put(1_000_000_000_000_000_000L, "E");
}
publ...
How do you manage databases in development, test, and production?
...of good options. I wouldn't use the "restore a backup" strategy.
Script all your schema changes, and have your CI server run those scripts on the database. Have a version table to keep track of the current database version, and only execute the scripts if they are for a newer version.
Use a migr...
Passing an integer by reference in Python
...d you can't just assign the "variable" a new value because then you're actually creating a new object (which is distinct from the old one) and giving it the name that the old object had in the local namespace.
Usually the workaround is to simply return the object that you want:
def multiply_by_2(x...
Best practice multi language website
...ome months now, but I haven't been in a situation that I needed to explore all possible options before. Right now, I feel like it's time to get to know the possibilities and create my own personal preference to use in my upcoming projects.
...
How to deep copy a list?
... don't make a deep copy using list() (Both list(...) and testList[:] are shallow copies).
You use copy.deepcopy(...) for deep copying a list.
deepcopy(x, memo=None, _nil=[])
Deep copy operation on arbitrary Python objects.
See the following snippet -
>>> a = [[1, 2, 3], [4, 5, 6]]...