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How do I fix PyDev “Undefined variable from import” errors?
I've got a Python project using PyDev in Eclipse, and PyDev keeps generating false errors for my code. I have a module settings that defines a settings object. I import that in module b and assign an attribute with:
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Can you explain the HttpURLConnection connection process?
... a web service. I know how to use HTTPURLConnection but I want to understand how it works. Basically, I want to know the following:
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How to move Jenkins from one PC to another
...el comfortable with Jenkins as my long term "partner" in the build process and would like to "move" this Jenkins to a dedicated server.
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Difference between HashSet and HashMap?
... does not allow duplicate values, what is the difference between HashMap and HashSet ?
19 Answers
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SVN 405 Method Not Allowed
I accidentally deleted a folder in SVN and added it back immediately. I ran into an issue with this and my solution ended up removing the folder completely from my local copy as well as the server copy. I can do updates and commits without problems on any other file or folder, but if I try to create...
Howto: Clean a mysql InnoDB storage engine?
...eople create multiple ibdata files hoping for better disk-space management and performance, however that belief is mistaken.
Can I run OPTIMIZE TABLE ?
Unfortunately, running OPTIMIZE TABLE against an InnoDB table stored in the shared table-space file ibdata1 does two things:
Makes the table’s...
How can I multiply and divide using only bit shifting and adding?
How can I multiply and divide using only bit shifting and adding?
14 Answers
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How does a language expand itself? [closed]
I am learning C++ and I've just started learning about some of Qt 's capabilities to code GUI programs. I asked myself the following question:
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What is the difference between visibility:hidden and display:none?
The CSS rules visibility:hidden and display:none both result in the element not being visible. Are these synonyms?
18 A...
Best way to test for a variable's existence in PHP; isset() is clearly broken
...l scope variables as well, on can do a $defined_vars = get_defined_vars(); and then test via array_key_exists('v', $defined_vars);.
– Henrik Opel
Sep 27 '10 at 16:01
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