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Throwing cats out of windows
Imagine you're in a tall building with a cat. The cat can survive a fall out of a low story window, but will die if thrown from a high floor. How can you figure out the longest drop that the cat can survive, using the least number of attempts?
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Given a class, see if instance has method (Ruby)
...d
then read this:
In Ruby, a property (attribute) on your model is basically a method also. So method_defined? will also return true for properties, not just methods.
For example:
Given an instance of a class that has a String attribute first_name:
<instance>.first_name.class #=> Stri...
Truncate a string straight JavaScript
I'd like to truncate a dynamically loaded string using straight JavaScript. It's a url, so there are no spaces, and I obviously don't care about word boundaries, just characters.
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How do I do top 1 in Oracle?
...t. And Patrick, good point I think the syntax is incorrect on that. It really should be a keep over (dense_rank() last... )
– mcpeterson
Aug 11 '10 at 16:10
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What's the difference between session.Merge and session.SaveOrUpdate?
I notice sometimes with my parent/child objects or many-to-many relationships, I need to call either SaveOrUpdate or Merge . Usually, when I need to call SaveOrUpdate , the exception I get on calling Merge has to do with transient objects not being saved first.
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Redirect to external URI from ASP.NET MVC controller
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Optionally, you can do this instead: return new RedirectResult("yourURL", true); which is almost exactly the same, but gives you the parameter at the end to indicate whether it's a permanent redirect or not (HTTP 301 vs. something ...
Read an Excel file directly from a R script
...e gdata package works most of the time (although you need to have Perl installed on your system -- usually already true on MacOS and Linux, but takes an extra step on Windows, i.e. see http://strawberryperl.com/). There are various caveats, and alternatives, listed on the R wiki page.
The only reas...
千亿时代 网游走到十字路口 - 资讯 - 清泛网 - 专注C/C++及内核技术
...谷，中国游戏产业还是在去年迈入千亿元时代，而今年的ChinaJoy无疑是多重变局下的集中阅兵：增速放缓到不能再缓的端...十余年发展有高峰也有低谷，中国游戏产业还是在去年迈入千亿元时代，而今年的ChinaJoy无疑是多重变局...
Determining memory usage of objects? [duplicate]
... That nice little nugged misled me, since I had something big called 'x' (hint: it looked small); here's an replacement: sort( sapply(mget(ls()),object.size) ) .
– petrelharp
Aug 28 '14 at 19:58
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Center image using text-align center?
Is the property text-align: center; a good way to center an image using CSS?
24 Answers
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