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What's wrong with overridable method calls in constructors?

... On invoking overridable method from constructors Simply put, this is wrong because it unnecessarily opens up possibilities to MANY bugs. When the @Override is invoked, the state of the object may be inconsistent and/or incomplete. A quote from Effective ...
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Hashing a file in Python

...e who have to read bad style... which might be you reading this code years from now. share | improve this answer | follow | ...
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What is the benefit of using $() instead of backticks in shell scripts?

...ir directory tree which have the same name as the earliest dated text file from December 2011 (a). Another example would be something like getting the name (not the full path) of the parent directory: pax> cd /home/pax/xyzzy/plugh pax> parent=$(basename $(dirname $PWD)) pax> echo $parent ...
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Can I control the location of .NET user settings to avoid losing settings on application upgrade?

...e two hashes in the properties of the setup project (that the msi is built from), the 'upgrade code' and the 'product code'. These determine how the msi can be installed, and if it upgrades, overwrites, or installs beside any other version of the same application. For instance, if you have two v...
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defaultdict of defaultdict?

... d[Key_doesnt_exist] will be defaultdict(int). If you try to access a key from this last defaultdict i.e. d[Key_doesnt_exist][Key_doesnt_exist] it will return 0, which is the return value of the argument of the last defaultdict i.e. int(). ...
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How to read multiple text files into a single RDD?

I want to read a bunch of text files from a hdfs location and perform mapping on it in an iteration using spark. 10 Answers...
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Why would I use a templating engine? jsp include and jstl vs tiles, freemarker, velocity, sitemesh

...s far simpler than JSP EL or tag libraries Strict separation of view logic from any other sort of logic - no possible option to drop down to using scriptlet tags and doing nasty things in your templates. Placeholders - do velocity/freemaker give anything more than JSTL? In JSTL you put placeho...
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Unable to understand useCapture parameter in addEventListener

...evel-3-Events-20031107/events.html#Events-phases Below, content extracted from the link. Phases The event is dispatched following a path from the root of the tree to this target node. It can then be handled locally at the target node level or from any target's ancestors higher in the tree. The ev...
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Is there a Rake equivalent in Python?

...hon (2.6+ and 3.3+) task execution tool & library, drawing inspiration from various sources to arrive at a powerful & clean feature set. Below are a few descriptive statements from Invoke's website: Invoke is a Python (2.6+ and 3.3+) task execution tool & library, drawing inspiration f...
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Git Pull While Ignoring Local Changes?

... If after git reset your files still differ from the remote, read stackoverflow.com/questions/1257592/… – Colonel Panic Aug 30 '12 at 22:31 3 ...