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How to tell which version of a gem a rails app is using
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173
In Rails 3 and Rails 4, use bundle show
In Rails 2, rake gems will print out what gems, depende...
Append values to a set in Python
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answered Aug 2 '10 at 22:43
Alex MartelliAlex Martelli
724k148148 gold badges11251125 silver badges13241324 bronze badges
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Simple explanation of MapReduce?
...hem back in the same kind of list.
suppose I have a list of numbers: [1,2,3] and I want to double every number, in this case, the function to "double every number" is function x = x * 2. And without mappings, I could write a simple loop, say
A = [1, 2, 3]
foreach (item in A) A[item] = A[item] * 2
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UIView with rounded corners and drop shadow?
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33 Answers
33
Active
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HTTP error 403 in Python 3 Web Scraping
...ng to scrap a website for practice, but I kept on getting the HTTP Error 403 (does it think I'm a bot)?
8 Answers
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how do you push only some of your local git commits?
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193
Assuming your commits are on the master branch and you want to push them to the remote master br...
Appropriate datatype for holding percent values?
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133
Assuming two decimal places on your percentages, the data type you use depends on how you plan ...
What is the use of Enumerable.Zip extension method in Linq?
...= new string[] { "A", "B", "C", "D", "E" };
var numbers= new int[] { 1, 2, 3 };
var q = letters.Zip(numbers, (l, n) => l + n.ToString());
foreach (var s in q)
Console.WriteLine(s);
Ouput
A1
B2
C3
share
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Determine function name from within that function (without using traceback)
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David Foerster
1,30211 gold badge1212 silver badges2222 bronze badges
answered Feb 21 '11 at 15:16
Rosh OxymoronRosh O...
How to get method parameter names?
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363
Take a look at the inspect module - this will do the inspection of the various code object pro...