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I want to execute shell commands from Maven's pom.xml
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149
Here's what's been working for me:
<plugin>
<artifactId>exec-maven-plugin</a...
In Jinja2, how do you test if a variable is undefined?
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edited Jul 29 '14 at 0:16
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answere...
Can git operate in “silent mode”?
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cat $stderr >&2
rm -f $stdout $stderr
exit 1
fi
rm -f $stdout $stderr
}
This will suppress stdout and stderr, unless the git command fails. It's not pretty; in fact the stdout file is ignored and it should just redirect that to /dev/null. Works, though. And...
Java 8 Stream and operation on arrays
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edited May 23 '17 at 12:18
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111 silver badge
answered Jun 24 '14 at 15:57
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How to get one value at a time from a generator function in Python?
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157
Yes, or next(gen) in 2.6+.
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How do I save and restore multiple variables in python?
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175
If you need to save multiple objects, you can simply put them in a single list, or tuple, for ...
Python : List of dict, if exists increment a dict value, if not append a new dict
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210
That is a very strange way to organize things. If you stored in a dictionary, this is easy:
#...
How can I output UTF-8 from Perl?
...the "utf8" pragma, and I'm getting unexpected results. I'm using Mac OS X 10.5 (Leopard), and I'm editing with TextMate. All of my settings for both my editor and operating system are defaulted to writing files in utf-8 format.
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How update the _id of one MongoDB Document?
...2d2a000002")})
// set a new _id on the document
doc._id = ObjectId("4c8a331bda76c559ef000004")
// insert the document, using the new _id
db.clients.insert(doc)
// remove the document with the old _id
db.clients.remove({_id: ObjectId("4cc45467c55f4d2d2a000002")})
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Float vs Decimal in ActiveRecord
...esent a Float. It's like a scientific notation for binary (something like +1.43*10^2). Because of that, it is impossible to store fractions and decimals in Float exactly.
That's why there is a Decimal format. If you do this:
irb:001:0> "%.47f" % (1.0/10)
=> "0.100000000000000005551115123125...