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filter for complete cases in data.frame using dplyr (case-wise deletion)
...data.frame for complete cases using dplyr? complete.cases with a list of all variables works, of course. But that is a) verbose when there are a lot of variables and b) impossible when the variable names are not known (e.g. in a function that processes any data.frame).
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Was PreferenceFragment intentionally excluded from the compatibility package?
...cated methods are deprecated as of Android 3.0. They are perfectly fine on all versions of Android, but the direction is to use PreferenceFragment on Android 3.0 and higher.
Can anyone tell me whether this was intentional?
My guess is it's a question of engineering time, but that's just a gue...
Why are global variables evil? [closed]
...rtant thing) changes there affect the entire interpreter. It is not like a string that you create instances... is like modifying all the string instances. Monkey patching smell.
– graffic
Mar 21 '14 at 6:18
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Git resolve conflict using --ours/--theirs for all files
...subdirectories recursively (the -r flag) looking for conflict markers (the string '<<<<<<<')
the -l or --files-with-matches flag causes grep to output only the filename where the string was found. Scanning stops after first match, so each matched file is only output once.
The...
How do you write multiline strings in Go?
Does Go have anything similar to Python's multiline strings:
9 Answers
9
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How can I use PHP to dynamically publish an ical file to be read by Google Calendar?
...l($timestamp) {
return date('Ymd\Tgis\Z', $timestamp);
}
function escapeString($string) {
return preg_replace('/([\,;])/','\\\$1', $string);
}
$eol = "\r\n";
$load = "BEGIN:VCALENDAR" . $eol .
"VERSION:2.0" . $eol .
"PRODID:-//project/author//NONSGML v1.0//EN" . $eol .
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Determine the number of NA values in a column
...nt the number of NA values in a data frame column. Say my data frame is called df , and the name of the column I am considering is col . The way I have come up with is following:
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Design RESTful query API with a long list of query parameters [closed]
...have accepted the practice that a GET with too long or too complex a query string (e.g. query strings don't handle nested data easily) can be sent as a POST instead, with the complex/long data represented in the body of the request.
Look up the spec for POST in the HTTP spec. It's incredibly broad....
Why are the Level.FINE logging messages not showing?
...design does get to you, if one has been writing loggers that simply dumped strings into a file, console etc.
– Vineet Reynolds
Jun 11 '11 at 12:19
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Hibernate - A collection with cascade=”all-delete-orphan” was no longer referenced by the owning ent
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Thank you! I was initialising my List as List<String> list = new ArrayList<>();. Changing it to List<String> list = null; fixed the problem :)
– Radical
Feb 28 '18 at 8:45
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