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Why does the lock object have to be static?
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answered Feb 19 '11 at 20:01
Marc Gravell♦Marc Gravell
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Remove columns from dataframe where ALL values are NA
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How to swap files between windows in VIM?
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edited Mar 28 '13 at 11:21
Holger Just
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prototype based vs. class based inheritance
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There are about a hundred terminology issues here, mostly built around someone (not you) tryin...
ReadOnlyCollection or IEnumerable for exposing member collections?
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edited Aug 17 '17 at 17:26
answered Jan 29 '09 at 13:32
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How do I find the duplicates in a list and create another list with them?
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How to get a random number in Ruby
...sided die, you'd use: 1 + rand(6). A roll in craps could be simulated with 2 + rand(6) + rand(6).
Finally, if you just need a random float, just call rand with no arguments.
As Marc-André Lafortune mentions in his answer below (go upvote it), Ruby 1.9.2 has its own Random class (that Marc-...
Why is [1,2] + [3,4] = “1,23,4” in JavaScript?
... For example var o = { valueOf:function () { return 4; } }; evaluating o + 2; produces 6, a number, evaluating o + '2' produces '42', a string.
To see how the overview table was generated visit http://jsfiddle.net/1obxuc7m/
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How do I (or can I) SELECT DISTINCT on multiple columns?
I need to retrieve all rows from a table where 2 columns combined are all different. So I want all the sales that do not have any other sales that happened on the same day for the same price. The sales that are unique based on day and price will get updated to an active status.
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Ruby send vs __send__
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Some classes (for example the standard library's socket class) define their own send method wh...