大约有 40,000 项符合查询结果(耗时:0.0644秒) [XML]

https://stackoverflow.com/ques... 

MySQL get the date n days ago as a timestamp

... DATE_SUB will do part of it depending on what you want mysql> SELECT DATE_SUB(NOW(), INTERVAL 30 day); 2009-06-07 21:55:09 mysql> SELECT TIMESTAMP(DATE_SUB(NOW(), INTERVAL 30 day)); 2009-06-07 21:55:09 mysql> SELECT U...
https://stackoverflow.com/ques... 

If threads share the same PID, how can they be identified?

... +---------+ | process | _| pid=42 |_ _/ | tgid=42 | \_ (new thread) _ _ (fork) _/ +---------+ \ / +---------+ +---------+ | ...
https://stackoverflow.com/ques... 

Submit form on pressing Enter with AngularJS

In this particular case, what options do I have to make these inputs call a function when I press Enter? 12 Answers ...
https://stackoverflow.com/ques... 

Technically what is the main difference between Oracle JDK and OpenJDK? [duplicate]

... Wow, such confuse. So after Java 7, when you package an app with OpenJDK-JRE, it's identical to packaging it with Oracle ServerJDK-JRE? – Pacerier Jul 28 '17 at 16:10 ...
https://stackoverflow.com/ques... 

What is Scala's yield?

...I use yield instead of map? This map code is equivalent val res = args.map(_.toUpperCase) , right? – Geo Jun 27 '09 at 12:23 4 ...
https://stackoverflow.com/ques... 

Where can I learn jQuery? Is it worth it?

...hools.com . It's hit or miss, I know, but the PHP and CSS sections specifically have proven very useful for reference. 14 A...
https://stackoverflow.com/ques... 

In C/C++ what's the simplest way to reverse the order of bits in a byte?

...b; } First the left four bits are swapped with the right four bits. Then all adjacent pairs are swapped and then all adjacent single bits. This results in a reversed order. share | improve this an...
https://stackoverflow.com/ques... 

The transaction manager has disabled its support for remote/network transactions

... both database and client. Also make sure you check "Network DTC Access", "Allow Remote Client", "Allow Inbound/Outbound" and "Enable TIP". To enable Network DTC Access for MS DTC transactions Open the Component Services snap-in. To open Component Services, click Start. In the search box, type d...
https://stackoverflow.com/ques... 

Rails: How can I set default values in ActiveRecord?

...of the available methods, but I believe that defining an after_initialize callback is the way to go for the following reasons: default_scope will initialize values for new models, but then that will become the scope on which you find the model. If you just want to initialize some numbers to 0 then...
https://stackoverflow.com/ques... 

undefined method `source_index' for Gem:Module (NoMethodError)

I'm running a Rails 2.3.5 application and upon running script/server I am shown the following: 5 Answers ...