大约有 30,000 项符合查询结果（耗时：0.0435秒） [XML]
DateTime vs DateTimeOffset
Currently, we have a standard way of dealing with .NET DateTime 's in a TimeZone aware way: Whenever we produce a DateTime we do it in UTC (e.g. using DateTime.UtcNow ), and whenever we display one, we convert back from UTC to the user's local time.
...
Rails where condition using NOT NIL
...t's easy:
Foo.includes(:bar).where.not(bars: {id: nil})
See also:
http://guides.rubyonrails.org/active_record_querying.html#not-conditions
share
|
improve this answer
|
...
How to get the seconds since epoch from the time + date output of gmtime()?
...re two ways, depending on your original timestamp:
mktime() and timegm()
http://docs.python.org/library/time.html
share
|
improve this answer
|
follow
|
...
How to fix 'sudo: no tty present and no askpass program specified' error?
I am trying to compile some sources using a makefile. In the makefile there is a bunch of commands that need to be ran as sudo .
...
How to profile methods in Scala?
What is a standard way of profiling Scala method calls?
12 Answers
12
...
How can I force WebKit to redraw/repaint to propagate style changes?
...the display + offset trigger didn't work for me, I found a solution here:
http://mir.aculo.us/2009/09/25/force-redraw-dom-technique-for-webkit-based-browsers/
i.e.
element.style.webkitTransform = 'scale(1)';
share
...
How to import existing *.sql files in PostgreSQL 8.4?
...; done
Here's the documentation of the psql application (thanks, Frank): http://www.postgresql.org/docs/current/static/app-psql.html
share
|
improve this answer
|
follow
...
Emacs on Mac OS X Leopard key bindings
...th another key. By itself, it is escape.
Read the excellent article at http://stevelosh.com/blog/2012/10/a-modern-space-cadet/ for a lot more information.
Is there a Boolean data type in Microsoft SQL Server like there is in MySQL? [duplicate]
...rmation on three valued logic-
Example of three valued logic in SQL Server
http://www.firstsql.com/idefend3.htm
https://www.simple-talk.com/sql/learn-sql-server/sql-and-the-snare-of-three-valued-logic/
share
|
...
How to insert a line break in a SQL Server VARCHAR/NVARCHAR string
...
I found the answer here: http://blog.sqlauthority.com/2007/08/22/sql-server-t-sql-script-to-insert-carriage-return-and-new-line-feed-in-code/
You just concatenate the string and insert a CHAR(13) where you want your line break.
Example:
DECLARE @...