大约有 40,700 项符合查询结果（耗时：0.0619秒） [XML]
Is it possible to use raw SQL within a Spring Repository
I need to use raw SQL within a Spring Data Repository, is this possible? Everything I see around @Query is always entity based.
...
How would I extract a single file (or changes to a file) from a git stash?
I'd like to know if it is possible to extract a single file or diff of a file from a git stash without popping the stash changeset off.
...
C++11 emplace_back on vector?
...
For anyone from the future, this behavior will be changed in C++20.
In other words, even though implementation internally will still call T(arg0, arg1, ...) it will be considered as regular T{arg0, arg1, ...} that you would expect.
...
Why does String.valueOf(null) throw a NullPointerException?
...
The issue is that String.valueOf method is overloaded:
String.valueOf(Object)
String.valueOf(char[])
Java Specification Language mandates that in these kind of cases, the most specific overload is chosen:
JLS 15.12.2.5 Choo...
Python “raise from” usage
What's the difference between raise and raise from in Python?
1 Answer
1
...
FFMPEG (libx264) “height not divisible by 2”
...The answer to the original question which does not want to scale the video is:
-vf "pad=ceil(iw/2)*2:ceil(ih/2)*2"
Command:
ffmpeg -r 24 -i frame_%05d.jpg -vcodec libx264 -y -an video.mp4 -vf "pad=ceil(iw/2)*2:ceil(ih/2)*2"
Basically, .h264 needs even dimensions so this filter will:
Divide t...
Get the last inserted row ID (with SQL statement) [duplicate]
....YourTable(columns....)
VALUES(..........)
SELECT SCOPE_IDENTITY()
This works as long as you haven't inserted another row - it just returns the last IDENTITY value handed out in this scope here.
There are at least two more options - @@IDENTITY and IDENT_CURRENT - read more about how they work...
Is there a difference between “raise exception()” and “raise exception” without parenthesis?
...
The short answer is that both raise MyException and raise MyException() do the same thing. This first form auto instantiates your exception.
The relevant section from the docs says, "raise evaluates the first expression as the exception obj...
Why in Java 8 split sometimes removes empty strings at start of result array?
... 7 and Java 8, we observe the following clause being added:
When there is a positive-width match at the beginning of the input sequence then an empty leading substring is included at the beginning of the resulting array. A zero-width match at the beginning however never produces such empty leadi...
Check whether an input string contains a number in javascript
My end goal is to validate an input field. The input may be either alphabetic or numeric.
12 Answers
...