大约有 40,000 项符合查询结果（耗时：0.0478秒） [XML]
Nested attributes unpermitted parameters
I have a Bill object, which has many Due objects. The Due object also belongs to a Person . I want a form that can create the Bill and its children Dues all in one page. I am trying to create a form using nested attributes, similar to ones in this Railscast .
...
How to get VM arguments from inside of Java application?
I need to check if some option that can be passed to JVM is explicitly set or has its default value.
5 Answers
...
What does the '.' (dot or period) in a Go import statement do?
In the Go tutorial, and most of the Go code I've looked at, packages are imported like this:
3 Answers
...
Node.js: How to send headers with form data using request module?
I have code like the following:
5 Answers
5
...
Scala: List[Future] to Future[List] disregarding failed futures
I'm looking for a way to convert an arbitrary length list of Futures to a Future of List. I'm using Playframework, so ultimately, what I really want is a Future[Result] , but to make things simpler, let's just say Future[List[Int]] The normal way to do this would be to use Future.sequence(...) ...
nginx missing sites-available directory
I installed Nginx on Centos 6 and I am trying to set up virtual hosts. The problem I am having is that I can't seem to find the /etc/nginx/sites-available directory.
...
Class constants in python
In python, I want a class to have some "constants" (practically, variables) which will be common in all subclasses. Is there a way to do it with friendly syntax?
Right now I use:
...
Min/Max-value validators in asp.net mvc
Validation using attributes in asp.net mvc is really nice. I have been using the [Range(min, max)] validator this far for checking values, like e.g.:
...
How to use chrome web inspector to view hover code
Using chromes web inspector to view code is very useful. But how do you view for example the hover code for a button? You will have to hover the mouse over the button and thus cannot use it (mouse) in the inspector. Are there any shortcuts or other ways to accomplish this in the inspector?
...
Accessing console and devtools of extension's background.js
I just started out with Google Chrome extensions and I can't seem to log to console from my background js. When an error occurs (because of a syntax error, for example), I can't find any error messages either.
...