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Rails: select unique values from a column
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Sergio TulentsevSergio Tulentsev
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How to remove a key from Hash and get the remaining hash in Ruby/Rails?
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answered Jun 19 '12 at 17:03
Peter BrownPeter Brown
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Default parameters with C++ constructors [closed]
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edited May 23 '17 at 10:31
Community♦
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answered Oct 9 '08 at 14:59
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Textarea onchange detection
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edited May 23 '17 at 12:10
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answered May 13 '10 at 16:58
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Is there a Unix utility to prepend timestamps to stdin?
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answered Aug 22 '08 at 1:53
KieronKieron
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Find size of object instance in bytes in c#
...nt size = *(*(int**)&th + 1);
Console.WriteLine(size);
This works on 3.5 SP1 32-bit. I'm not sure if field sizes are the same on 64-bit - you might have to adjust the types and/or offsets if they are not.
This will work for all "normal" types, for which all instances have the same, well-defin...
How do you find the row count for all your tables in Postgres
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603
There's three ways to get this sort of count, each with their own tradeoffs.
If you want a true...
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