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How to round a number to n decimal places in Java
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Use setRoundingMode, set the RoundingMode explicitly to handle your issue with the half-even round, then use the format pattern for your required output.
Example:
DecimalFormat df = new DecimalFormat("#.####");
df.setRoundingMo...
How to find out which processes are using swap space in Linux?
...t working anymore: It seems more recent versions of top no longer have 'O' set as the key for choosing the sort fields. When using the ? key you can see the actual program name and version, procps-ng being the latest version. This is a fork by Debian, Fedora and openSUSE: gitorious.org/procps . ...
How to list containers in Docker
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The Docker command set is simple and holds together well:
docker stack ls
docker service ls
docker image ls
docker container ls
Teaching the aliases first is confusing. Once you understand what's going on, they can save some keystrokes:
doc...
Export query result to .csv file in SQL Server 2008
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Confirmed @Breandán comment. The new settings won't apply to currently opened query window, must close them and re-run the query.
– Shinigamae
Jun 22 '15 at 8:14
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How do I rename all files to lowercase?
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A fish shell version:
for old in *
set new (echo $old | tr '[A-Z]' '[a-z]')
mv $old $new
end
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Automatically remove Subversion unversioned files
Does anybody know a way to recursively remove all files in a working copy that are not under version control? (I need this to get more reliable results in my automatic build VMware.)
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How to export data as CSV format from SQL Server using sqlcmd?
...h-1 -s"," -w 700
-h-1 removes column name headers from the result
-s"," sets the column seperator to ,
-w 700 sets the row width to 700 chars (this will need to be as wide as the longest row or it will wrap to the next line)
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Is there any boolean type in Oracle databases?
...clear recommendation about what to use instead. See this thread on asktom. From recommending CHAR(1) 'Y'/'N' they switch to NUMBER(1) 0/1 when someone points out that 'Y'/'N' depends on the English language, while e.g. German programmers might use 'J'/'N' instead.
The worst thing is that they defen...
How to get all subsets of a set? (powerset)
Given a set
26 Answers
26
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What is “entropy and information gain”?
..., but that generalize poorly to other data not represented in the training set). Hence we usually stop when we get to a certain minimum number of instances in leaf nodes (and just predict the majority class), and/or perform some kind of pruning (see the Wikipedia links provided above to learn more)....