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Can I unshelve to a different branch in tfs 2008?
...hat some developer in my team shelved his changes that he did in branch A. And I am working on branch B. Can I unshelve his changes into branch B? (By GUI or command prompt)
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Possible to perform cross-database queries with PostgreSQL?
...m going to guess that the answer is "no" based on the below error message (and this Google result ), but is there anyway to perform a cross-database query using PostgreSQL?
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java.util.Date to XMLGregorianCalendar
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I should like to take a step back and a modern look at this 10 years old question. The classes mentioned, Date and XMLGregorianCalendar, are old now. I challenge the use of them and offer alternatives.
Date was always poorly designed and is more than 20 yea...
How to solve java.lang.NoClassDefFoundError?
...issing a transitive dependency of a .jar file that you've compiled against and you're trying to use.
For example, if you had a class com.example.Foo, after compiling you would have a class file Foo.class. Say for example your working directory is .../project/. That class file must be placed in .../...
Git authentication fails after enabling 2FA
I just enabled 2FA (I can't think of any other changes I made) and git asked for my username and password. I provided both, but they were "wrong". I tried many of the solutions here: Git push requires username and password but that didn't work. In particular, when switching from https to ssh, the ...
A non-blocking read on a subprocess.PIPE in Python
I'm using the subprocess module to start a subprocess and connect to its output stream (standard output). I want to be able to execute non-blocking reads on its standard output. Is there a way to make .readline non-blocking or to check if there is data on the stream before I invoke .readline ? I'...
How do you convert a byte array to a hexadecimal string, and vice versa?
How can you convert a byte array to a hexadecimal string, and vice versa?
45 Answers
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C++ unordered_map using a custom class type as the key
... things:
A hash function; this must be a class that overrides operator() and calculates the hash value given an object of the key-type. One particularly straight-forward way of doing this is to specialize the std::hash template for your key-type.
A comparison function for equality; this is require...
Overriding the java equals() method - not working?
I ran into an interesting (and very frustrating) issue with the equals() method today which caused what I thought to be a well tested class to crash and cause a bug that took me a very long time to track down.
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Can we make unsigned byte in Java
...igned byte in unsigned. The problem is the data I am receiving is unsigned and Java does not support unsigned byte, so when it reads the data it treats it as signed.
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