大约有 40,000 项符合查询结果（耗时：0.0480秒） [XML]
eclipse won't start - no java virtual machine was found
Eclipse was running fine yesterday (and has been since I installed it about a year ago). Now all the sudden I'm getting the following error on startup:
...
javac : command not found
...
Richard HRichard H
32.9k3333 gold badges101101 silver badges130130 bronze badges
...
ERROR: permission denied for sequence cities_id_seq using Postgres
I'm new at postgres (and at database info systems all in all). I ran following sql script on my database:
4 Answers
...
How do I get the full path of the current file's directory?
...pt.
– Bryan Oakley
Apr 17 '14 at 21:32
10
I would recommend using realpath instead of abspath to ...
Better way to cast object to int
...Exact() — For converting from a string in a specific format
Convert.ToInt32() — For converting an object of unknown type. It will use an explicit and implicit conversion or IConvertible implementation if any are defined.
as int? — Note the "?". The as operator is only for reference types, an...
Differences between C++ string == and compare()?
I just read some recommendations on using
9 Answers
9
...
Get the Last Inserted Id Using Laravel Eloquent
...
Actually you can do it right in the insert $id = DB::table('someTable')->insertGetId( ['field' => Input['data']);
– Casey
May 15 '14 at 15:05
...
Difference between exit() and sys.exit() in Python
... mikumiku
153k4141 gold badges276276 silver badges293293 bronze badges
4
...
How can I select and upload multiple files with HTML and PHP, using HTTP POST?
...oaded...
– ygesher
Nov 10 '13 at 22:32
...
Extract elements of list at odd positions
...
Solution
Yes, you can:
l = L[1::2]
And this is all. The result will contain the elements placed on the following positions (0-based, so first element is at position 0, second at 1 etc.):
1, 3, 5
so the result (actual numbers) will be:
2, 4, 6
Explanation
The [1::2]...