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Output array to CSV in Ruby
...file using CSV.table, did some manipulations, got rid of some columns, and now I want to spool the resulting Array of Hashes out again as CSV (really tab-delimited). How to? gist.github.com/4647196
– tamouse
Jan 27 '13 at 7:13
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Simple logical operators in Bash
...ssions with more quirks (but older and more portable). Don't write any for now; start worrying about them when you find scripts that contain them.
This is the idiomatic way to write your test in bash:
if [[ $varA == 1 && ($varB == "t1" || $varC == "t2") ]]; then
If you need portability ...
Knight's Shortest Path on Chessboard
...ely bewildered at. However, I feel as though it's a concept I should learn now rather than cross my fingers that it never comes up.
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How to swap keys and values in a hash
... out[value] << key
end
end
end
Note: This code with tests is now on GitHub.
Or:
class Hash
def safe_invert
self.each_with_object({}){|(k,v),o|(o[v]||=[])<<k}
end
end
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Why is HttpClient BaseAddress not working?
... you. That solved a problem I've been struggling with for most of two days now, between switching to Azure, back to IIS, and back to IIS Express, which most rudely ignores misplaced or extra forward slashes. Once set in the base class of my RestClient, it was almost invisible and got no attention at...
How do I check if a type is a subtype OR the type of an object?
... that Baseis (obviously) not a subclass of itself.
Type.IsAssignableFrom
Now, this will answer your particular question, but it will also give you false positives. As Eric Lippert has pointed out in the comments, while the method will indeed return True for the two above questions, it will also re...
Sublime Text 2 keyboard shortcut to open file in specified browser (e.g. Chrome)
...er, paste this
[{ "keys": [ "f12" ], "command": "view_in_browser" }]
now F12 will be your shortcut key.
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What's the point of g++ -Wreorder?
...
Consider:
struct A {
int i;
int j;
A() : j(0), i(j) { }
};
Now i is initialized to some unknown value, not zero.
Alternatively, the initialization of i may have some side effects for which the order is important. E.g.
A(int n) : j(n++), i(n++) { }
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Why should I use an IDE? [closed]
...estion, Mark speaks highly of IDEs, saying "some people still just dont know "why" they should use one...". As someone who uses vim for programming, and works in an environment where most/all of my colleagues use either vim or emacs for all of their work, what are the advantages of IDEs? Why sho...
Run Cron job every N minutes plus offset
...r. As a result, I was able to comment on the Server Fault answer which has now been fixed. I don't remember the actual search terms I used to find the IBM page.
– toxalot
Oct 7 '13 at 18:44
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