大约有 31,500 项符合查询结果（耗时：0.0676秒） [XML]
Import PEM into Java Key Store
...BEGIN delimiter or having multiple PEMs in one file or both. Either remove all extraneous data and feed in each PEM in one at a time or use my tool, as detailed in my answer.
– Alastair McCormack
Apr 15 '13 at 14:39
...
How to only find files in a given directory, and ignore subdirectories using bash
...
If I wanted to list where all the above symlinks pointed to found in the above pattern, would I just use a pipe? Something like find /dev -maxdepth 1 -name 'abc-*' | ls -l
– suffa
Oct 10 '11 at 16:11
...
Multiline bash commands in makefile
...colon:
foo:
for i in `find`; \
do \
all="$$all $$i"; \
done; \
gcc $$all
But if you just want to take the whole list returned by the find invocation and pass it to gcc, you actually don't necessarily need a multiline command:
foo:
...
Rails: call another controller action from a controller
I need to call the create action in controller A, from controller B.
9 Answers
9
...
Difference: std::runtime_error vs std::exception()
... in the exception hierarchy. It has no other uses. In other words, conceptually it is an abstract class (even though it is not defined as abstract class in C++ meaning of the term).
std::runtime_error is a more specialized class, descending from std::exception, intended to be thrown in case of vari...
MongoDB and “joins” [duplicate]
I'm sure MongoDB doesn't officially support "joins". What does this mean?
11 Answers
1...
What is the difference between Non-Repeatable Read and Phantom Read?
...at user A has queried has a different value the second time.
Phantom read: All the rows in the query have the same value before and after, but different rows are being selected (because B has deleted or inserted some). Example: select sum(x) from table; will return a different result even if none of...
Converting between datetime, Timestamp and datetime64
...>> numpy.__version__
'1.6.2' # current version available via pip install numpy
I can reproduce the long value on numpy-1.8.0 installed as:
pip install git+https://github.com/numpy/numpy.git#egg=numpy-dev
The same example:
>>> from datetime import datetime
>>> import num...
std::vector versus std::array in C++
... should one be preferred over another? What are the pros and cons of each? All my textbook does is list how they are the same.
...
Samples of Scala and Java code where Scala code looks simpler/has fewer lines?
I need some code samples (and I also really curious about them) of Scala and Java code which show that Scala code is more simple and concise then code written in Java (of course both samples should solve the same problem).
...