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What is a WeakHashMap and when to use it? [duplicate]
What is a WeakHashMap and when should one be using it? What are the differences between a WeakHashMap and a HashMap ?
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Should a function have only one return statement?
... Agreed. Although having multiple exit point can get out of hand, I definately think it's better than putting your entire function in an IF block. Use return as often as it makes sense to keep your code readable.
– Joshua Carmody
Sep 19 '08 at 20:...
Inherit from a generic base class, apply a constraint, and implement an interface in C#
...tion. I have a generic class which is inheriting from a generic base class and is applying a constraint to one of the type parameters. I also want the derived class to implement an interface. For the life of me, I cannot seem to figure out the correct syntax.
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Why is it impossible to override a getter-only property and add a setter? [closed]
...nly property. It doesn't make sense for derivations to break this contract and make it read-write.
I'm with Microsoft on this one.
Let's say I'm a new programmer who has been told to code against the Baseclass derivation. i write something that assumes that Bar cannot be written to (since the Basec...
PreparedStatement IN clause alternatives?
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An analysis of the various options available, and the pros and cons of each is available here.
The suggested options are:
Prepare SELECT my_column FROM my_table WHERE search_column = ?, execute it for each value and UNION the results client-side. Requires only one pre...
Sending a mail from a linux shell script
I want to send an email from a Linux Shell script. What is the standard command to do this and do I need to set up any special server names?
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Upload failed You need to use a different version code for your APK because you already have one wit
...lay's Developer Console? I have just changed the version code from 2 to 3 and it failed to upload the build.
19 Answers
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What is PostgreSQL explain telling me exactly?
...content: "• EXPLAIN works on any DML not just SELECT (ie UPDATE, DELETE, and INSERT)". My biggest misunderstanding is what "startup" time means, and that's not explained anywhere in these ~30 slides.
– Mark E. Haase
Feb 19 '16 at 15:51
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What is the standard Python docstring format? [closed]
...osts showed. However the default Sphinx docstring format was not mentioned and is based on reStructuredText (reST). You can get some information about the main formats in this blog post.
Note that the reST is recommended by the PEP 287
There follows the main used formats for docstrings.
- Epytext...
Is there an advantage to use a Synchronized Method instead of a Synchronized Block?
...so explicitly declares that the method synchronizes on the object instance and is (presumably) thread-safe.
– Scrubbie
Mar 14 '12 at 18:08
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