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Pass a data.frame column name to a function
...8 -4
> new_column3(dat,z,x*y)
x y z
1 1 5 5
2 2 6 12
3 3 7 21
4 4 8 32
So the short answer is basically: pass data.frame column names as strings and use [[ to select single columns. Only start delving into eval, substitute, etc. if you really know what you're doing.
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How to remove a lua table entry by its key?
...000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 4...
printf() formatting for hex
...wered Feb 6 '13 at 16:25
Random832Random832
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jquery, find next element by class
...000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 4...
How to enable Heap updates on my android client
...000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 4...
Verify a method call using Moq
...000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 4...
How to get the host name of the current machine as defined in the Ansible hosts file?
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What does the @ symbol represent in objective-c?
...ng objects.
– JoJo
Sep 30 '15 at 15:32
10
Is anyone else confused by the fact that this "answer" ...
How to create an installer for a .net Windows Service using Visual Studio
...InnerException != null && ex.InnerException.GetType() == typeof(Win32Exception))
{
Win32Exception wex = (Win32Exception)ex.InnerException;
Console.WriteLine("Error(0x{0:X}): Service already installed!", wex.ErrorCode);
return wex.ErrorCode;
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How do I convert a string to a double in Python?
...
325
>>> x = "2342.34"
>>> float(x)
2342.3400000000001
There you go. Use float...