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Any reason not to use '+' to concatenate two strings?
A common antipattern in Python is to concatenate a sequence of strings using + in a loop. This is bad because the Python interpreter has to create a new string object for each iteration, and it ends up taking quadratic time. (Recent versions of CPython can apparently optimize this in some cases, b...
How do I list one filename per output line in Linux?
I'm using ls -a command to get the file names in a directory, but the output is in a single line.
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Check if a String contains numbers Java
I'm writing a program where the user enters a String in the following format:
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How useful/important is REST HATEOAS ( maturity level 3)?
I'm getting involved in a project where some senior team members believe that a REST API has to be HATEOAS compliant and implement all Richardson's maturity levels ( http://martinfowler.com/articles/richardsonMaturityModel.html )!
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How can I create a temp file with a specific extension with .NET?
I need to generate a unique temporary file with a .csv extension.
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How to convert a Bitmap to Drawable in android?
How can I convert a Bitmap image to Drawable ?
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Recursive lambda functions in C++11
I am new to C++11. I am writing the following recursive lambda function, but it doesn't compile.
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How to avoid reverse engineering of an APK file?
I am developing a payment processing app for Android, and I want to prevent a hacker from accessing any resources, assets or source code from the APK file.
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Why would anyone use set instead of unordered_set?
C++0x is introducing unordered_set which is available in boost and many other places. What I understand is that unordered_set is hash table with O(1) lookup complexity. On the other hand, set is nothing but a tree with log(n) lookup complexity. Why on earth would anyone use set instead ...
How to convert a Collection to List?
I am using TreeBidiMap from the Apache Collections library. I want to sort this on the values which are doubles .
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