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execJs: 'Could not find a JavaScript runtime' but execjs AND therubyracer are in Gemfile
...dent of the gem.
on ubuntu its: sudo apt-get install nodejs
I'm using 64bit ubuntu 11.10
update:
From @Galina 's answer below I'm guessing that the latest version of nodejs is required,
so @steve98177 your best option on a redhat(or CentOS) box is to install from source code as @Galina did, but ...
Find which version of package is installed with pip
...
1070
As of pip 1.3, there is a pip show command.
$ pip show Jinja2
---
Name: Jinja2
Version: 2.7....
Are braces necessary in one-line statements in JavaScript?
...ematic code. The vertical space argument is just silly. Readability always wins, and today's screens are huge.
– Kim
Nov 23 '17 at 1:11
1
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scala vs java, performance and memory? [closed]
...ically", with immutable objects and higher order functions, and it'll be a bit slower and a bit larger. The one exception to this rule-of-thumb is when using generic objects in which the type params use the @specialised annotation, this'll create even larger bytecode that can outpace Java's perform...
Node.js throws “btoa is not defined” error
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10 Answers
10
Active
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What is “loose coupling?” Please provide examples
...doNetworkAccess();
else new ABC().doDiskAccess();
That works, but it's a bit unwieldy. I could simplify this with an interface like this:
public interface Runnable
{
public void run();
}
public class ABC implements Runnable
{
public void run() {...}
}
public class XYZ implements Runnable...
How do I display a text file content in CMD?
I want to display the content of a text file in a CMD window. In addition, I want to see the new lines that added to file, like tail -f command in Unix.
...
Explicitly select items from a list or tuple
...ray:
>>> import numpy
>>> myBigList = numpy.array(range(1000))
>>> myBigList[(87, 342, 217, 998, 500)]
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
IndexError: invalid index
>>> myBigList[[87, 342, 217, 998, 500]]
array([ 8...
Python int to binary string?
...
typically one would use 4/8/... bit representation: "{:08b}".format(37)
– Sparkler
Aug 14 '18 at 21:51
3
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How to Batch Rename Files in a macOS Terminal?
...'s/123/onetwothree/g' *
– Bryan
Aug 10 '16 at 17:52
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