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filter for complete cases in data.frame using dplyr (case-wise deletion)
... works for me:
df %>%
filter(complete.cases(df))
Or a little more general:
library(dplyr) # 0.4
df %>% filter(complete.cases(.))
This would have the advantage that the data could have been modified in the chain before passing it to the filter.
Another benchmark with more columns...
Order of items in classes: Fields, Properties, Constructors, Methods
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nodeJs callbacks simple example
... argument, the first argument, as an error. Optionally we will have one or more additional arguments, depending on the context. In this case, the context is our above example.
Here I rewrite our example in this convention.
var myCallback = function(err, data) {
if (err) throw err; // Check for t...
Efficient way to insert a number into a sorted array of numbers?
I have a sorted JavaScript array, and want to insert one more item into the array such the resulting array remains sorted. I could certainly implement a simple quicksort-style insertion function:
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Mac OS X - EnvironmentError: mysql_config not found
...tor-python', it can be installed using pip install mysql-connector-python. More information on this can be found here and here.
Manually find the location of 'mysql/bin', 'mysql_config', and 'MySQL-Python', and add all these to the $PATH environment variable.
If all above steps fail, then you could ...
Select arrow style change
... looks like Firefox doesn't support this feature up until version 35 (read more here)
There is a workaround here, take a look at jsfiddle on that post.
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Best way to trim strings after data entry. Should I create a custom model binder?
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This deserves more upvotes. I'm actually surprised the MVC team didn't choose to implement this in the default model binder...
– Portman
Dec 10 '10 at 17:04
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How to encrypt/decrypt data in php?
...r encryption. The storage requirements depend on the cipher and mode used; more about this later.
The Password field will be hashed using a one-way password hash,
Encryption
Cipher and mode
Choosing the best encryption cipher and mode is beyond the scope of this answer, but the final choice affe...
How do I find the location of the executable in C? [duplicate]
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how to use ng-option to set default value of select element
...properties to use for the value/text attributes of the select control. For more information see this: ozkary.com/2015/08/angularjs-ngoption-directive-simplified.html
– ozkary
Sep 4 '15 at 14:57
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