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Using smart pointers for class members
I'm having trouble understanding the usage of smart pointers as class members in C++11. I have read a lot about smart pointers and I think I do understand how unique_ptr and shared_ptr / weak_ptr work in general. What I don't understand is the real usage. It seems like everybody recommends using...
Bash if statement with multiple conditions throws an error
I'm trying to write a script that will check two error flags, and in case one flag (or both) are changed it'll echo-- error happened. My script:
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Map to String in Java
When I do System.out.println(map) in Java, I get a nice output in stdout. How can I obtain this same string representation of a Map in a variable without meddling with standard output? Something like String mapAsString = Collections.toString(map) ?
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How to generate a Dockerfile from an image?
Is it possible to generate a Dockerfile from an image? I want to know for two reasons:
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HMAC-SHA1 in bash
Is there a bash script to generate a HMAC-SHA1 hash?
4 Answers
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Can you define aliases for imported modules in Python?
In Python, is it possible to define an alias for an imported module?
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Is there something like Annotation Inheritance in java?
I'm exploring annotations and came to a point where some annotations seems to have a hierarchy among them.
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How to compile tests with SBT without running them
Is there a way to build tests with SBT without running them?
3 Answers
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Import module from subfolder
I want to import subfolders as modules. Therefore every subfolder contains a __init__.py . My folder structure is like this:
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@Media min-width & max-width
I have this @media setup:
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