大约有 8,300 项符合查询结果（耗时：0.0259秒） [XML]
Overload with different return type in Java?
Why is it not possible to overload a function just by changing the return type? Will that change in a future version of Java?
...
make_unique and perfect forwarding
Why is there no std::make_unique function template in the standard C++11 library? I find
6 Answers
...
How to enumerate an enum with String type?
For example, how can I do something like:
42 Answers
42
...
In Python, using argparse, allow only positive integers
...
This should be possible utilizing type. You'll still need to define an actual method that decides this for you:
def check_positive(value):
ivalue = int(value)
if ivalue <= 0:
raise argparse.ArgumentTypeError("%s is an invalid positive int value" % value)
return iv...
How to create a temporary directory?
I use to create a tempfile , delete it and recreate it as a directory:
4 Answers
4
...
How to avoid reinstalling packages when building Docker image for Python projects?
My Dockerfile is something like
4 Answers
4
...
How can I compare two lists in python and return matches
I want to take two lists and find the values that appear in both.
19 Answers
19
...
Should I implement __ne__ in terms of __eq__ in Python?
...__ method as well, but does it make sense to implement __ne__ in terms of __eq__ as such?
5 Answers
...
How can I read command line parameters from an R script?
I've got a R script for which I'd like to be able to supply several command-line parameters (rather than hardcode parameter values in the code itself). The script runs on Windows.
...
What is tail recursion?
...
Consider a simple function that adds the first N natural numbers. (e.g. sum(5) = 1 + 2 + 3 + 4 + 5 = 15).
Here is a simple JavaScript implementation that uses recursion:
function recsum(x) {
if (x === 1) {
return x;
} else {
...