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parseInt(null, 24) === 23… wait, what?
...-24 system:
If S contains any character that is
not a radix-R digit, then let Z be the
substring of S consisting of all
characters before the first such
character; otherwise, let Z be S. [15.1.2.2/11]
(And this is why parseInt(null, 23) (and lower radices) gives you NaN rather than 23:...
Passing command line arguments to R CMD BATCH
... some issues getting it working. If I do R CMD BATCH my_script.R blabla then blabla becomes the output file, rather than being interpreted as an argument available to the R script being executed.
...
Comparing numbers in Bash
... bash, you should do your check in arithmetic context:
if (( a > b )); then
...
fi
For POSIX shells that don't support (()), you can use -lt and -gt.
if [ "$a" -gt "$b" ]; then
...
fi
You can get a full list of comparison operators with help test or man test.
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How to get multiple counts with one SQL query?
...CT distributor_id,
count(*) AS total,
sum(case when level = 'exec' then 1 else 0 end) AS ExecCount,
sum(case when level = 'personal' then 1 else 0 end) AS PersonalCount
FROM yourtable
GROUP BY distributor_id
sha...
How to ignore certain files in Git
... someone had checked in, which was ".idea". In the file I put ".idea/" and then "git rm --cached -r .idea" to remove the directory and everything under it (because git only versions files, not directories.)
– Doug Noel
Mar 16 '16 at 16:37
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Why should I avoid multiple inheritance in C++?
...d of objects
Sometimes, Multiple Inheritance is the right thing. If it is, then use it.
Be prepared to defend your multiple-inherited architecture in code reviews
1. Perhaps composition?
This is true for inheritance, and so, it's even more true for multiple inheritance.
Does your object really need...
VB.NET - How to move to next item a For Each Loop?
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For Each I As Item In Items
If I = x Then Continue For
' Do something
Next
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LinearLayout not expanding inside a ScrollView
...t this . I have a LinearLayout and within this used ScrollView as a child. Then i take again LinearLayout and add what ever View u want to this LinearLayout and then this LinearLayout add to ScrollView and finally add this ScrollView to LinearLayout. Then u can get scroll in ur ScrollView and nothin...
Why is this inline-block element pushed downward?
...e baseline is the bottom margin edge.
If you are not sure about baseline then here is brief explanation in simple words.
All characters except 'gjpqy' are written on the baseline you can think of baseline as if you draw a simple horizontal line same as underlining right below these "random chara...
Is there a rule-of-thumb for how to divide a dataset into training and validation sets?
...e 20% of it, say, 10 times and observe performance on the validation data, then do the same with 40%, 60%, 80%. You should see both greater performance with more data, but also lower variance across the different random samples
To get a handle on variance due to the size of test data, perform the sa...