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How to avoid “ConcurrentModificationException” while removing elements from `ArrayList` while iterat
I'm trying to remove some elements from an ArrayList while iterating it like this:
10 Answers
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Should accessing SharedPreferences be done off the UI Thread?
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Wow, wasn't expecting to get such a clear answer straight from the source! Thanks much!
– cottonBallPaws
Dec 7 '10 at 1:50
9
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Android : difference between invisible and gone?
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From Documentation you can say that
View.GONE This view is invisible, and it doesn't take any space for
layout purposes.
View.INVISIBLE This view is invisible, but it still takes up space for layout purposes.
Lets clear th...
Count number of occurrences of a pattern in a file (even on same line)
...Search | cut -d ":" -f 4 | sort -n | uniq -c
Sample:
grep "SMTP connect from unknown" maillog | cut -d ":" -f 4 | sort -n | uniq -c
6 SMTP connect from unknown [188.190.118.90]
54 SMTP connect from unknown [62.193.131.114]
3 SMTP connect from unknown [91.222.51.253]
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Best way to compare 2 XML documents in Java
..., Readers, Diffs
assertXMLEqual(xml1, xml2); // assertXMLEquals comes from XMLTestCase
}
}
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How do I embed a single file from a GitHub gist with the new gist interface?
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Take the gist URL from the left-hand side and after the .js add a query string like ?file=myFile.blah, e.g.
<script src="https://gist.github.com/4505639.js?file=macroBuild.scala" type="text/javascript"></script>
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Most underused data visualization [closed]
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First, I would point you to a very nice tutorial on ggplot2 and ggobi from "Looking at Data" earlier this year. Beyond that I would just highlight one visualization from R, and two graphics packages (which are not as widely used as base graphics, lattice, or ggplot):
Heat Maps
I really like ...
Why are hexadecimal numbers prefixed with 0x?
...uage used the syntax 8 1234 for octal numbers. When Ken Thompson created B from BCPL, he used the 0 prefix instead. This is great because
an integer constant now always consists of a single token,
the parser can still tell right away it's got a constant,
the parser can immediately tell the base (0...
Best practice for Python assert
...wn Exception classes.
For example, if you're writing a function to read from a configuration file into a dict, improper formatting in the file should raise a ConfigurationSyntaxError, while you can assert that you're not about to return None.
In your example, if x is a value set via a user int...
When is assembly faster than C?
...ed a lot.
C doesn't have a full-multiplication operator (2N-bit result from N-bit inputs). The usual way to express it in C is to cast the inputs to the wider type and hope the compiler recognizes that the upper bits of the inputs aren't interesting:
// on a 32-bit machine, int can hold 32-bit...