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Grouping functions (tapply, by, aggregate) and the *apply family
Whenever I want to do something "map"py in R, I usually try to use a function in the apply family.
10 Answers
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Differences between hard real-time, soft real-time, and firm real-time?
I have read the definitions for the different notions of real-time , and the examples provided for hard and soft real-time systems make sense to me. But, there is no real explanation or example of a firm real-time system. According to the link above:
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What is Objective C++? [closed]
...ore, and the resulting executable will be linked with the Objective-C runtime, so your Objective-C classes will work as well. You can definitely use it in Xcode -- name your files with the .mm extension.
Also, you might want to read Apple's (sadly deleted, but archived) documentation on Objective-C...
Logging best practices [closed]
...w people are handling tracing and logging in real applications. Here are some questions that might help to explain your answer.
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javax.faces.application.ViewExpiredException: View could not be restored
...problem is when I log in and open another page on which I logout, then I come back to first page and I click on any link etc or refresh page I get this exception. I guess it's normal (or maybe not:)) because I logged out and session is destroyed. What should I do to redirect user to for example inde...
Replacement for Google Code Search? [closed]
Google Code Search has been incredibly valuable to me as a developer - I use it a couple times a week to see how other developers have used (usually poorly documented) APIs. It's also convenient to see the internals of some of those APIs, or to find which API corresponds to the functionality you wa...
Find the files that have been changed in last 24 hours
E.g., a MySQL server is running on my Ubuntu machine. Some data has been changed during the last 24 hours.
6 Answers
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Fluent Validation vs. Data Annotations [closed]
...datation? They seem to have similar objects, all the way to their object names. Is one related to another? What are their differences? In what way do these differences denote different use cases?
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In PHP, how to detect the execution is from CLI mode or through browser ? [duplicate]
... my PHPcron files and the files which are accessing through the browser. Some part of the code, I need only for non cron files. How can I detect whether the execution is from CLI or through browser (I know it can be done by passing some arguments with the cron files but I dont have access to crontab...
Converting integer to string in Python
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>>> str(10)
'10'
>>> int('10')
10
Links to the documentation:
int()
str()
Conversion to a string is done with the builtin str() function, which basically calls the __str__() method of its parameter.
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