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Manually raising (throwing) an exception in Python
...ns, which preserve tracebacks:
raise RuntimeError('specific message') from error
Be aware:
this does allow changing the error type raised, and
this is not compatible with Python 2.
Deprecated Methods:
These can easily hide and even get into production code. You want to raise an exception...
How to get the current branch name in Git?
I'm from a Subversion background and, when I had a branch, I knew what I was working on with "These working files point to this branch".
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What's the difference between xsd:include and xsd:import?
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Use xsd:include to bring in an XSD from the same or no namespace.
Use xsd:import to bring in an XSD from a different namespace.
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Can two applications listen to the same port?
...P address? Taking it a step further, can one app listen to requests coming from a certain IP and the other to another remote IP?
I know I can have one application that starts off two threads (or forks) to have similar behavior, but can two applications that have nothing in common do the same?
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Why does Java have transient fields?
...e part of the serialization (which means saved, like to a file) process.
From the Java Language Specification, Java SE 7 Edition, Section 8.3.1.3. transient Fields:
Variables may be marked transient to
indicate that they are not part of the
persistent state of an object.
For example, you...
Comparing boxed Long values 127 and 128
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TL;DR
Java caches boxed Integer instances from -128 to 127. Since you are using == to compare objects references instead of values, only cached objects will match. Either work with long unboxed primitive values or use .equals() to compare your Long objects.
Long (pu...
JavaScript variable assignments from tuples
...f, as JavaScript doesn't seem to provide obvious tuple support, and coming from an intense period of functional programming, you develop the want for tuples. I also just found this, but not sure if it works, it just looked good in terms of tuple support too: cs.umd.edu/projects/PL/arrowlets/api-tu...
Extract a substring from a string in Ruby using a regular expression
How can I extract a substring from within a string in Ruby?
5 Answers
5
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Remove unnecessary svn:mergeinfo properties
...t not at the root folder (this is needed for branching to work properly).
From the root of the project do:
svn propdel svn:mergeinfo -R
svn revert .
svn ci -m "Removed mergeinfo"
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Why and How to avoid Event Handler memory leaks?
... when there are no other references to the subscriber.
If you unsubscribe from the event with an equal handler, then yes, that will remove the handler and the possible leak. However, in my experience this is rarely actually a problem - because typically I find that the publisher and subscriber have...