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Array.size() vs Array.length
...er of named arguments the function declares they had to use an alternative and size was chosen (count would have been a better choice).
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How to get an array of unique values from an array containing duplicates in JavaScript? [duplicate]
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It is midway through 2016 now, and for the most part it's been a semicolons are optional but highly encouraged year.
– trex005
Jun 7 '16 at 21:47
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how to check the jdk version used to compile a .class file [duplicate]
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You're looking for this on the command line (for a class called MyClass):
On Unix/Linux:
javap -verbose MyClass | grep "major"
On Windows:
javap -verbose MyClass | findstr "major"
You want the major version from the results. Here are some example values...
selecting unique values from a column
...ant the whole record, the DISTINCT is worthless (unless it is an id field, and you can do a second query where id IN that list). Good news, though, if you have multiple duplicate results as a result of a JOIN you can do a GROUP BY and get the full results filtered.
– Chadwick M...
How to convert Linux cron jobs to “the Amazon way”?
...s their response:
Tom
I did a quick poll of some of my colleagues and came up empty on the
cron, but after sleeping on it I realised the important step may be
limited to locking. So I looked for "distributed cron job locking"
and found a reference to Zookeeper, an Apache project.
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how to override action bar back button in android?
...ionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
Toast.makeText(getApplicationContext(),"Back button clicked", Toast.LENGTH_SHORT).show();
break;
}
return true;
}
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Select rows of a matrix that meet a condition
...matrix(1:20, ncol = 4)
colnames(m) <- letters[1:4]
The following command will select the first row of the matrix above.
subset(m, m[,4] == 16)
And this will select the last three.
subset(m, m[,4] > 17)
The result will be a matrix in both cases.
If you want to use column names to selec...
No module named setuptools
... want to install setup file of twilio. When I install it through given command it is given me an error:
5 Answers
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Is there anything like .NET's NotImplementedException in Java?
...Wallau I saw this: docs.oracle.com/javase/7/docs/api/java/lang/… There stands that this class is a member of the Java Collection Framework.
– L.Butz
Jul 11 '12 at 10:56
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In a bootstrap responsive page how to center a div
... </div>
</div>
It's a simple example of a horizontally and vertically div centered in all screen sizes.
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