大约有 48,000 项符合查询结果(耗时:0.0675秒) [XML]

https://stackoverflow.com/ques... 

Find the index of a dict within a list, by matching the dict's value

...answered Dec 8 '10 at 20:03 toklandtokland 58.5k1212 gold badges124124 silver badges159159 bronze badges ...
https://stackoverflow.com/ques... 

Get selected element's outer HTML

... 2014 Edit : The question and this reply are from 2010. At the time, no better solution was widely available. Now, many of the other replies are better : Eric Hu's, or Re Capcha's for example. This site seems to have a solution for you : jQuery: oute...
https://stackoverflow.com/ques... 

Rails extending ActiveRecord::Base

... Create a file in the config/initializers directory called extensions.rb and add the following line to the file: require "active_record_extension" Inheritance (Preferred) Refer to Toby's answer. Monkey patching (Should be avoided) Create a file in the config/initializers directory called act...
https://stackoverflow.com/ques... 

How can I read and parse CSV files in C++?

I need to load and use CSV file data in C++. At this point it can really just be a comma-delimited parser (ie don't worry about escaping new lines and commas). The main need is a line-by-line parser that will return a vector for the next line each time the method is called. ...
https://stackoverflow.com/ques... 

Turning live() into on() in jQuery

... The on documentation states (in bold ;)): Event handlers are bound only to the currently selected elements; they must exist on the page at the time your code makes the call to .on(). Equivalent to .live() would be something like $(document.body).on('change', 'select[nam...
https://stackoverflow.com/ques... 

How to use a variable to specify column name in ggplot

I have a ggplot command 6 Answers 6 ...
https://stackoverflow.com/ques... 

Invalid date format specification in gemspec

I am getting the following error when I try to use gems in windows, and I also referred to this stackoverflow post and updated rubygems and rails. But nothing could solve the problem. ...
https://stackoverflow.com/ques... 

How to work with complex numbers in C?

...t doesn't give me much information about how to use it. How to access real and imaginary parts in an efficient way? Is there native functions to get module and phase? ...
https://stackoverflow.com/ques... 

Why does flowing off the end of a non-void function without returning a value not produce a compiler

... C99 and C++ standards don't require functions to return a value. The missing return statement in a value-returning function will be defined (to return 0) only in the main function. The rationale includes that checking if every c...
https://stackoverflow.com/ques... 

Is Ruby pass by reference or by value?

...has a reference to. (Even this isn't bulletproof, though — both of the standard cloning methods do a shallow copy, so the instance variables of the clone still point to the same objects that the originals did. If the objects referenced by the ivars mutate, that will still show up in the copy, sinc...