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What are the “standard unambiguous date” formats for string-to-date conversion in R?
...-'NA' element,
and give an error if neither works.
as.Date("01 Jan 2000") yields an error because the format isn't one of the two listed above. as.Date("01/01/2000") yields an incorrect answer because the date isn't in one of the two formats listed above.
I take "standard unambiguou...
How do I create a class instance from a string name in ruby?
...const_get c}
=> Foo::Bar
> clazz.new
=> #<Foo::Bar:0x0000010110a4f8>
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What is maximum query size for mysql?
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192
You can check your current
server setting with:
SHOW VARIABLES LIKE 'max_allowed_packet';...
How to convert string to boolean php
...r_var covers a whole range of values, including the truthy values "true", "1", "yes" and "on". See here for more details.
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Full screen in WPF application
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181
Just set the WindowState to Maximized, and the WindowStyle to None.
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Difference between passing array and array pointer into function in C
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115
First, some standardese:
6.7.5.3 Function declarators (including prototypes)
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7 A declara...
Regex to match a digit two or four times
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145
There's no specific syntax for that, but there are lots of ways to do it:
(?:\d{4}|\d{2}) ...
How to pick a new color for each plotted line within a figure in matplotlib?
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matplotlib 1.5+
You can use axes.set_prop_cycle (example).
matplotlib 1.0-1.4
You can use axes.set_color_cycle (example).
matplotlib 0.x
You can use Axes.set_default_color_cycle.
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how to write setTimeout with params by Coffeescript
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214
I think it's a useful convention for callbacks to come as the last argument to a function. This...
Android Closing Activity Programmatically
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175
What about the Activity.finish() method (quoting) :
Call this when your activity is done
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