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Re-raise exception with a different type and message, preserving existing information
I'm writing a module and want to have a unified exception hierarchy for the exceptions that it can raise (e.g. inheriting from a FooError abstract class for all the foo module's specific exceptions). This allows users of the module to catch those particular exceptions and handle them distinctly,...
Integrate ZXing in Android Studio
I'll start explaining all the steps I have done and in the end what is the problem.
5 Answers
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What's the difference between getRequestURI and getPathInfo methods in HttpServletRequest?
... lightweight front-controller. I need to match request paths to different handlers (actions) in order to choose the correct one.
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Create a string of variable length, filled with a repeated character
...Java form here: Java - Create a new String instance with specified length and filled with specific character. Best solution?
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How to get the first item from an associative PHP array?
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What if i want to get the key and value?
– Timberman
Jul 13 at 12:44
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Linux: compute a single hash for a given folder & contents?
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If there is a whole directory tree, you're probably better off using find and xargs. One possible command would be
find path/to/folder -type f -print0 | sort -z | xargs -0 sha1sum | sha1sum
And, finally, if you also need to take account of permissions and empty directories:
(find path/to/folde...
What does FETCH_HEAD in Git mean?
... @Jefromi: sorry, i think you are wrong: as far as i understand, git fetch updates (merges) all object data from the remote storage, not just a brunch. So i do not understand from your answer how git decides to the tip of which branch to point FETCH_HEAD. I also cannot find FETCH_HE...
How would you implement an LRU cache in Java?
...ructures would you use? I've already implemented one using LinkedHashMap and Collections#synchronizedMap , but I'm curious if any of the new concurrent collections would be better candidates.
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iPhone App Icons - Exact Radius?
...now how to get the exact radius that the iPhone's icons use. I've searched and searched for a tutorial or a template but can't find one.
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Ruby on Rails - Import Data from a CSV file
...ase table. I do not want to save the CSV file, just take the data from it and put it into the existing table. I am using Ruby 1.9.2 and Rails 3.
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