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Ubuntu rails install fails on zlib
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If you come across this question trying to install Ruby using Ruby Version Manager (RVM) on Ubuntu 10.04 then there are instructions on installing zlib on the rvm web site http://rvm.beginrescueend.com/packages/zlib/
The steps are:
rvm pkg install zlib
(or
rvm package ...
How do I consume the JSON POST data in an Express application
... Since the middleware function interface is a standard used by many libraries, it also allows apps that don't use Express to use these middleware functions.
– Anm
Jan 31 '15 at 12:53
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How to extract the decision rules from scikit-learn decision-tree?
...eated my own function to extract the rules from the decision trees created by sklearn:
import pandas as pd
import numpy as np
from sklearn.tree import DecisionTreeClassifier
# dummy data:
df = pd.DataFrame({'col1':[0,1,2,3],'col2':[3,4,5,6],'dv':[0,1,0,1]})
# create decision tree
dt = DecisionTre...
How do I write a for loop in bash
... It's worth a mention that the range specified here is inclusive. By that, I mean you will see the entire range (1 to 10) printed to the console.
– Jamie
Feb 22 '16 at 22:28
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On - window.location.hash - Change?
...way to really do this (and is how the 'reallysimplehistory' does this), is by setting an interval that keeps checking the current hash, and comparing it against what it was before, we do this and let subscribers subscribe to a changed event that we fire if the hash changes.. its not perfect but brow...
What does the servlet value signify
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Servlet Life Cycle
The lifecycle of a servlet is controlled by the container in which the servlet has been deployed. When a request is mapped to a servlet, the container performs the following steps.
If an instance of the servlet does not exist, the web container:
a. Load...
How do I convert a TimeSpan to a formatted string? [duplicate]
...DateTime vars, beginTime and endTime. I have gotten the difference of them by doing the following:
14 Answers
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Android and in TextView
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Neither \u0020 nor \u00A0 work. Neither by setting them in XML (not even in the preview in XML) nor by setting them in Java with setText(). Tried both with Android 4.1 and 4.2
– Stephan Wiesner
Feb 20 '13 at 6:08
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Command substitution: backticks or dollar sign / paren enclosed? [duplicate]
... I'll repeat each section of the poster's text, block-quoted, and followed by my response.
What's the preferred syntax, and why? Or are they pretty much interchangeable?
I would say that the $(some_command) form is preferred over the `some_command` form. The second form, using a pair of backqu...
Purpose of #!/usr/bin/python3
...ter is located in /usr/bin/python3. A shebang line could also be a bash, ruby, perl or any other scripting languages' interpreter, for example: #!/bin/bash.
Without the shebang line, the operating system does not know it's a python script, even if you set the execution flag on the script and run i...