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Can't use NVM from root (or sudo)
...entioned that my application uses different version of NodeJS when running from sudo .
10 Answers
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Calling virtual functions inside constructors
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Calling virtual functions from a constructor or destructor is dangerous and should be avoided whenever possible. All C++ implementations should call the version of the function defined at the level of the hierarchy in the current constructor and no f...
Python: json.loads returns items prefixing with 'u'
...ven dict or string
d3 = json.dumps(json.loads(d)) # 'dumps' gets the dict from 'loads' this time
print "d1: " + str(d1)
print "d2: " + d2
print "d3: " + d3
Prints:
d1: {u'Aa': 1, u'cc': u'False', u'BB': u'blabla'}
d2: "{\"Aa\": 1, \"BB\": \"blabla\", \"cc\": \"False\"}"
d3: {"Aa": 1, "cc"...
How is std::function implemented?
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The implementation of std::function can differ from one implementation to another, but the core idea is that it uses type-erasure. While there are multiple ways of doing it, you can imagine a trivial (not optimal) solution could be like this (simplified for the specific c...
How do I download a tarball from GitHub using cURL?
I am trying to download a tarball from GitHub using cURL , but it does not seem to be redirecting:
5 Answers
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get list from pandas dataframe column
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Example conversion:
Numpy Array -> Panda Data Frame -> List from one Panda Column
Numpy Array
data = np.array([[10,20,30], [20,30,60], [30,60,90]])
Convert numpy array into Panda data frame
dataPd = pd.DataFrame(data = data)
print(dataPd)
0 1 2
0 10 20 30
1 20 30 60
2 ...
Correct way to populate an Array with a Range in Ruby
.... But this creates another array inside the array, I simply want the range from 2 to 25. Yet if I try order << (2.25) I get the error can't convert Range into Integer.
– kakubei
Nov 10 '11 at 14:29
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Fragments onResume from back stack
...cation mechanism Creating event callbacks to the activity. To quote a line from it:
A good way to do that is to define a callback interface inside the fragment and require that the host activity implement it. When the activity receives a callback through the interface, it can share the informati...
Deploying my application at the root in Tomcat
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You have a couple of options:
Remove the out-of-the-box ROOT/ directory from tomcat and rename your war file to ROOT.war before deploying it.
Deploy your war as (from your example) war_name.war and configure the context root in conf/server.xml to use your war file :
<Context path="" docBase="...
Functional, Declarative, and Imperative Programming [closed]
...et of declarative. On that point it depends if we differentiate "function" from "procedure". Lets handle imperative vs. declarative first.
Definition of declarative expression
The only attribute that can possibly differentiate a declarative expression from an imperative expression is the referential...