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What is `params.require(:person).permit(:name, :age)` doing in Rails 4?
All the examples of strong parameters in Rails 4 docs use
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Multiple commands in gdb separated by some sort of delimiter ';'?
I am trying to execute two commands at once in gdb:
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Vim - how to run a command immediately when starting vim?
I have a plugin (FindFile.vim) that needs to run :FindFileCache . whenever I start vim to gather a file cache for quick opening.. I have to run this every time I start vim though.
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When do I use fabs and when is it sufficient to use std::abs?
...nd fabs are behaving different when using math.h . But when I use just cmath and std::abs , do I have to use std::fabs or fabs ? Or isn't this defined?
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In Xcode, how to suppress all warnings in specific source files?
In my application I use 3rd party code that triggers some warnings. I reviewed them and they can be safely ignored.
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Join strings with a delimiter only if strings are not null or empty
...orry if I'm missing something here, but I'm trying to find a simple way to concatenate only non-null or non-empty strings.
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How to remove last n characters from every element in the R vector
I am very new to R, and I could not find a simple example online of how to remove the last n characters from every element of a vector (array?)
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What are CFI directives in Gnu Assembler (GAS) used for?
There seem to be a .CFI directive after every line and also there are wide varities of these ex., .cfi_startproc , .cfi_endproc etc.. more here .
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Converting an integer to a hexadecimal string in Ruby
Is there a built in way to convert an integer in Ruby into its hexadecimal equivalent?
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Using Moq to determine if a method is called
It is my understanding that I can test that a method call will occur if I call a higher level method, i.e.:
3 Answers
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