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Correct way to populate an Array with a Range in Ruby
...n create an array with a range using splat,
>> a=*(1..10)
=> [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
using Kernel Array method,
Array (1..10)
=> [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
or using to_a
(1..10).to_a
=> [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
...
Can existing virtualenv be upgraded gracefully?
I have a virtualenv created for Python 2.5 and want to "upgrade" it to Python 2.6.
5 Answers
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How do I add a path to PYTHONPATH in virtualenv
... basename works) in your virtualenv's site-packages folder, e.g. lib\python2.7\site-packages, with the absolute path to the directory containing your package as its only contents.
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Count lines of code in all java classes in Android Studio
...
245
Go to
https://plugins.jetbrains.com/idea/plugin/4509-statistic
and install the latest version
...
Set Colorbar Range in matplotlib
...
182
Using vmin and vmax forces the range for the colors. Here's an example:
import matplotlib as...
How to find difference between two Joda-Time DateTimes in minutes
...DateTime objects in milliseconds:
DateTime d1 = new DateTime();
DateTime d2 = new DateTime();
long diffInMillis = d2.getMillis() - d1.getMillis();
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Python module os.chmod(file, 664) does not change the permission to rw-rw-r— but -w--wx----
...ve the same result.
What you are doing is passing 664 which in octal is 1230
In your case you would need
os.chmod("/tmp/test_file", 436)
[Update] Note, for Python 3 you have prefix with 0o (zero oh). E.G, 0o666
sha...
What is the maximum float in Python?
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279
For float have a look at sys.float_info:
>>> import sys
>>> sys.float_info
...
Bare asterisk in function arguments?
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232
Bare * is used to force the caller to use named arguments - so you cannot define a function wi...
Ruby Hash to array of values
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265
Also, a bit simpler....
>> hash = { "a"=>["a", "b", "c"], "b"=>["b", "c"] }
=>...