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What are all the common ways to read a file in Ruby?
... line = f.gets
puts line
end
ensure
f.close
end
References: File API and the IO API.
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Hibernate SessionFactory vs. JPA EntityManagerFactory
... @MickaelMarrache the use of the JPA is to be preferred over the Hibernate API, because it is a Java Enterprise standard. Using JPA (and restricting yourself to it, without using Hibernate-specific features) improves application portability, i.e. you have the option to switch to a different persiste...
Releasing memory in Python
...info().rss
# collect() calls PyInt_ClearFreeList()
# or use ctypes: pythonapi.PyInt_ClearFreeList()
gc.collect()
mem3 = proc.get_memory_info().rss
pd = lambda x2, x1: 100.0 * (x2 - x1) / mem0
print "Allocation: %0.2f%%" % pd(mem1, mem0)
print "Unreference: %0.2f%%" % pd(mem2, mem1)
print "Collect:...
Django REST Framework: adding additional field to ModelSerializer
...fields = ('id', 'name', 'my_field')
http://www.django-rest-framework.org/api-guide/fields/#serializermethodfield
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Java SecurityException: signer information does not match
...ependency:tree|grep servlet
Its output:
[INFO] +- javax.servlet:servlet-api:jar:2.5:compile
[INFO] +- javax.servlet:jstl:jar:1.2:compile
[INFO] | +- org.eclipse.jetty.orbit:javax.servlet.jsp:jar:2.2.0.v201112011158:compile
[INFO] | +- org.eclipse.jetty.orbit:javax.servlet.jsp.jstl:jar:1.2.0.v20...
Chrome refuses to execute an AJAX script due to wrong MIME type
... "Change your server" doesn't work if you're trying to use an external API such as LinkedIn.
– Dan Dascalescu
Mar 20 '15 at 23:15
1
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How to select a single field for all documents in a MongoDB collection?
...wer is complete, it is worth noting that those commands may differ from on API to another (for those not using mongo's shell).
Please refer to documentation link for detailed info.
Nodejs, for instance, have a method called `projection that you would append to your find function in order to project...
Can we delete an SMS in Android before it reaches the inbox?
... (October 2013): When Android 4.4 arrives, it will make changes to the SMS APIs which may affect an app's ability to influence SMS delivery.
Check out this Android Developers blog post for some more info:
http://android-developers.blogspot.com/2013/10/getting-your-sms-apps-ready-for-kitkat.html
...
How to equalize the scales of x-axis and y-axis in Python matplotlib?
...
You need to dig a bit deeper into the api to do this:
from matplotlib import pyplot as plt
plt.plot(range(5))
plt.xlim(-3, 3)
plt.ylim(-3, 3)
plt.gca().set_aspect('equal', adjustable='box')
plt.draw()
doc for set_aspect
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Are arrays passed by value or passed by reference in Java? [duplicate]
...ts supertype, and inherits the implementation of all methods in the Object API.
... so are they passed by value or by reference? Does it depend on what the array contains, for example references or a primitive type?
Short answers: 1) pass by value, and 2) it makes no difference.
Longer answ...