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How do I list all versions of a gem available at a remote site?

I'm trying to find out all the remotely available versions of a specified gem. 4 Answers ...
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What's the result of += in C and C++?

... Semantics of the compound assignment operators is different in C and C++: C99 standard, 6.5.16, part 3: An assignment operator stores a value in the object designated by the left operand. An assignment expression has the value of the left o...
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Remote branch is not showing up in “git branch -r”

I have been pushing to a remote Bitbucket repository and recently a colleague has pushed a new branch he created to the same repository. ...
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How to get a URL parameter in Express?

I am facing an issue on getting the value of tagid from my URL: localhost:8888/p?tagid=1234 . 4 Answers ...
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Cannot deserialize the JSON array (e.g. [1,2,3]) into type ' ' because type requires JSON object (e.

... Your json string is wrapped within square brackets ([]), hence it is interpreted as array instead of single RetrieveMultipleResponse object. Therefore, you need to deserialize it to type collection of RetrieveMultipleResponse, ...
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Memory footprint of Haskell data types

How can I find the actual amount of memory required to store a value of some data type in Haskell (mostly with GHC)? Is it possible to evaluate it at runtime (e.g. in GHCi) or is it possible to estimate memory requirements of a compound data type from its components? ...
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Is it considered bad practice to perform HTTP POST without entity body?

I need to invoke a process which doesn't require any input from the user, just a trigger. I plan to use POST /uri without a body to trigger the process. I want to know if this is considered bad from both HTTP and REST perspectives? ...
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How big should a UIBarButtonItem image be?

I'm looking to create my own custom Sort By Date and Sort By Number buttons that I plan on placing in the navigation bar as the right button. ...
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RVM is not working in ZSH

I'd like to try out the ZSH shell on my Mac, but I also do a lot of Ruby and Rails development, so I use RVM quite a bit too. The problem is that I can't seem to get RVM to work in ZSH, and it's working fine in the default Bash shell: ...
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Why does PostgreSQL perform sequential scan on indexed column?

Very simple example - one table, one index, one query: 4 Answers 4 ...