大约有 46,000 项符合查询结果(耗时:0.0599秒) [XML]

https://stackoverflow.com/ques... 

An error occurred while installing pg (0.17.1), and Bundler cannot continue

I just installed Rails 4.0.2 and when creating a new app, in the bundle stage I get: 16 Answers ...
https://stackoverflow.com/ques... 

What exactly is Arel in Rails 3.0?

I understand that it is a replacement for ActiveRecord and that it uses objects instead of queries. 4 Answers ...
https://stackoverflow.com/ques... 

POST data in JSON format

I have some data that I need to convert to JSON format and then POST it with a JavaScript function. 4 Answers ...
https://stackoverflow.com/ques... 

Ruby sleep or delay less than a second?

I'm making a script with ruby that must render frames at 24 frames per second, but I need to wait 1/24th of a second between sending the commands. What is the best way to sleep for less than a second? ...
https://stackoverflow.com/ques... 

Simple basic explanation of a Distributed Hash Table (DHT)

Could any one give an explanation on how a DHT works? 3 Answers 3 ...
https://stackoverflow.com/ques... 

Is Java Regex Thread Safe?

I have a function that uses Pattern#compile and a Matcher to search a list of strings for a pattern. 5 Answers ...
https://stackoverflow.com/ques... 

SQL Server Escape an Underscore

How do I escape the underscore character? 5 Answers 5 ...
https://stackoverflow.com/ques... 

Turn off constraints temporarily (MS SQL)

I'm looking for a way to temporarily turn off all DB's constraints (eg table relationships). 5 Answers ...
https://stackoverflow.com/ques... 

Creating an official github mirror

How do I create a github mirror for an external git repository, such that it appears as "real mirror", e.g., as in https://github.com/mirrors ? ...
https://stackoverflow.com/ques... 

Python non-greedy regexes

How do I make a python regex like "(.*)" such that, given "a (b) c (d) e" python matches "b" instead of "b) c (d" ? ...