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How do I convert a Ruby class name to a underscore-delimited symbol?
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how to do the reverse?
– user1406062
May 26 '13 at 8:39
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show 4 more comments
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Filtering a list based on a list of booleans
...rue, False, True, False]
>>> %timeit list(compress(list_a, fil))
100000 loops, best of 3: 2.58 us per loop
>>> %timeit [i for (i, v) in zip(list_a, fil) if v] #winner
100000 loops, best of 3: 1.98 us per loop
>>> list_a = [1, 2, 4, 6]*100
>>> fil = [True, False,...
How to count total number of watches on a page?
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220
(You may need to change body to html or wherever you put your ng-app)
(function () {
var ro...
Heroku error: “Permission denied (public key)”
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edited Jul 15 '14 at 19:05
ElGavilan
5,42688 gold badges2323 silver badges3535 bronze badges
answered ...
How to use RSpec's should_raise with any kind of exception?
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380
expect { some_method }.to raise_error
RSpec 1 Syntax:
lambda { some_method }.should raise_err...
How to import existing *.sql files in PostgreSQL 8.4?
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edited Aug 3 '10 at 6:38
answered Aug 3 '10 at 6:16
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Is it necessary to explicitly remove event handlers in C#
... Console.WriteLine("~Publisher");
Console.WriteLine("Foo==null ? {0}", Foo == null);
}
public event EventHandler Foo;
}
public class Subscriber
{
~Subscriber()
{
Console.WriteLine("~Subscriber");
}
public void FooHandler(object sender, EventArgs e) {}
}
p...
Multi-line commands in GHCi
...a.
– Daniel Wagner
Dec 9 '11 at 12:40
Thanks. I also noticed that in other let/where blocks. This is a big difference ...
How to strip leading “./” in unix “find”?
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answered Apr 7 '10 at 22:57
Tim GreenTim Green
1,90411 gold badge1515 silver badges1919 bronze badges
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Re-entrant locks in C#
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150
No, not as long as you are locking on the same object. The recursive code effectively already h...