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What version of javac built my jar?
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You can't tell from the JAR file itself, necessarily.
Download a hex editor and open one of the class files inside the JAR and look at byte offsets 4 through 7. The version information is built in.
http://en.wikipedia.org/wiki/Java_class...
How does “this” keyword work within a function?
...iteral notation. Inside those objects, the this pointer is being used. From the behavior of the program, I have deduced that the this pointer is referring to the class on which the method was invoked, and not the object being created by the literal.
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Message Queue vs Message Bus — what are the differences?
... BUS vs. QUEUE is indeed somewhat a legacy concept, most recently stemming from systems like IBM MQ and Tibco Rendezvous. MQ was originally a 1:1 system, indeed a queue to decouple various systems.
Tibco by contrast was (sold as a) messaging backbone, where you could have multiple publishers and s...
why is plotting with Matplotlib so slow?
...quite disappointed with the performance. The following example is modified from SciPy examples and gives me only ~ 8 frames per second!
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Why can't a 'continue' statement be inside a 'finally' block?
...e semantics of finally it doesn't make sense to allow transferring control from inside a finally block to the outside of it.
Supporting this with some alternative semantics would be more confusing than helpful, since there are simple workarounds that make the intended behaviour way clearer. So you ...
Django - “no module named django.core.management”
I get the following error when trying to run Django from the command line.
21 Answers
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How should I choose an authentication library for CodeIgniter? [closed]
... and simple to integrate with CodeIgniter
Supports sending emails directly from the library
Well documented online and good active dev/user community
Simple to implement into a project
Cons
More complex DB schema than some others
Documentation lacks detail in some areas
SimpleLoginSecure
Pros
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How to merge dictionaries of dictionaries?
... makes the "reduce" easier to explain]
ps in python 3, you will also need from functools import reduce
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What is the best way to compare floats for almost-equality in Python?
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Use Python's decimal module, which provides the Decimal class.
From the comments:
It is worth noting that if you're
doing math-heavy work and you don't
absolutely need the precision from
decimal, this can really bog things
down. Floats are way, way faster to
deal with, but ...
Assert a function/method was not called using Mock
... @NathanArthur Hm, I don't think so, after sudo easy_install -U mock and from mock import Mock on MacOS, the above runs without a hitch. Never installed Django :)
– Joachim Isaksson
Nov 19 '14 at 16:11
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