大约有 46,000 项符合查询结果（耗时：0.0654秒） [XML]
Specify custom Date format for colClasses argument in read.table/read.csv
...
4 Answers
4
Active
...
Is there a zip-like function that pads to longest length in Python?
...
answered Aug 14 '09 at 11:10
Nadia AlramliNadia Alramli
94.1k3131 gold badges166166 silver badges149149 bronze badges
...
“x not in y” or “not x in y”
...
11 LOAD_CONST 0 (None)
14 RETURN_VALUE
I had thought at first that they always gave the same result, but that not on its own was simply a low precedence logical negation operator, which could be applied to a in b just as easily as any other ...
Real-world applications of zygohistomorphic prepromorphisms
...
stephen tetleystephen tetley
4,3451313 silver badges1717 bronze badges
...
How to use a different version of python during NPM install?
I have terminal access to a VPS running centos 5.9 and default python 2.4.3 installed. I also installed python 2.7.3 via these commands: (I used make altinstall instead of make install )
...
In Vim, how do I delete everything within the double quotes?
...|
edited Oct 25 '17 at 12:43
Hossein Vatani
67777 silver badges2121 bronze badges
answered Jan 6 '11 at ...
How do I test for an empty string in a Bash case statement?
...
4
I use a simple fall through. no parameters passed ($1="") will be caught by the second case stat...
Can an array be top-level JSON-text?
...op-level JSON-text.
There are three standard documents defining JSON: RFC 4627, RFC 7159 (which obsoletes RFC 4627), and ECMA-404. They differ in which top-level elements they allow, but all allow an object or an array as the top-level element.
RFC 4627: Object or array. "A JSON text is a seriali...
How do I set a column value to NULL in SQL Server Management Studio?
...
answered Jan 14 '09 at 21:05
Jeff MartinJeff Martin
9,50566 gold badges4343 silver badges6767 bronze badges
...
Convert Time from one time zone to another in Rails
...(Rails 2.3.2)
>> now = DateTime.now.utc
=> Sun, 06 Sep 2009 22:27:45 +0000
>> now.in_time_zone('Eastern Time (US & Canada)')
=> Sun, 06 Sep 2009 18:27:45 EDT -04:00
>> quit
So for your particular example
Annotation.last.created_at.in_time_zone('Eastern Time (US & C...