大约有 47,000 项符合查询结果（耗时：0.0800秒） [XML]
Java Generics: Cannot cast List to List? [duplicate]
...t;? extends Tree> b1 = a1;
... because then you can only fetch things from b1, and they're guaranteed to be compatible with Tree. You can't call b1.add(...) precisely because the compiler won't know whether it's safe or not.
Have a look at this section of Angelika Langer's Java Generics FAQ fo...
What is the difference between return and return()?
... If you made return into a function, how would you return a value from it?
– dan04
Apr 11 '14 at 5:42
4
...
Renaming branches remotely in Git
..._branch new_branch
git push -u origin new_branch
To remove an old branch from remote:
git push origin :old_branch
share
|
improve this answer
|
follow
|
...
Binary search (bisection) in Python
...
from bisect import bisect_left
def binary_search(a, x, lo=0, hi=None): # can't use a to specify default for hi
hi = hi if hi is not None else len(a) # hi defaults to len(a)
pos = bisect_left(a, x, lo, hi) # fin...
Parsing a CSV file using NodeJS
...
@ShashankVivek - in this old answer (from 2015), 'async' is an npm library that is used. More about it here caolan.github.io/async - to understand why maybe this helps blog.risingstack.com/node-hero-async-programming-in-node-js But javascript has evolved a lot ...
Is there hard evidence of the ROI of unit testing?
...
The bean counters couldn't tell a unit test from the rest of the code if their lives depended on it. I support the suggestion to just do it. There's one caveat, though: If you are not alone, you need your fellow developers to embrace this practice. If not, they will un...
What do I use for a max-heap implementation in Python?
...
If you then want to pop elements, use:
heapq.heappop(minheap) # pop from minheap
heapq._heappop_max(maxheap) # pop from maxheap
share
|
improve this answer
|
follow
...
Access string.xml Resource File from Java Android Code
How do you access the values in the res/values/string.xml resource file from the Android Activity class ?
5 Answers
...
Swift compiler segmentation fault when building
...extension to the class that's giving you problems.
Move a group of methods from the main file to SegFaultDebugger.swift.
Compile.
At this point, one of three things happens:
You still get the segfault in the original file: Move the methods from SegFaultDebugger.swift back to the original file an...
Django connection to PostgreSQL: “Peer authentication failed”
...ocalhost to the HOST setting and it worked.
Here is the DATABASES section from my settings.py.
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql_psycopg2',
'NAME': '<MYDATABASE>',
'USER': '<MYUSER>',
'PASSWORD': '<MYPASSWORD...