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Retrieving the inherited attribute names/values using Java Reflection
I've a Java object 'ChildObj' which is extended from 'ParentObj'. Now, if it is possible to retrieve all the attribute names and values of ChildObj, including the inherited attributes too, using Java reflection mechanism?
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How to capture the “virtual keyboard show/hide” event in Android?
I would like to alter the layout based on whether the virtual keyboard is shown or not. I've searched the API and various blogs but can't seem to find anything useful.
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Remove useless zero digits from decimals in PHP
I'm trying to find a fast way to remove zero decimals from number values like this:
24 Answers
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How does virtual inheritance solve the “diamond” (multiple inheritance) ambiguity?
I understand the diamond problem, and above piece of code does not have that problem.
5 Answers
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How does a public key verify a signature?
I am trying to get a better grapple on how public/private keys work. I understand that a sender may add a digital signature to a document using his/her private key to essentially obtain a hash of the document, but what I do not understand is how the public key can be used to verify that signature.
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Should I use alias or alias_method?
I found a blog post on alias vs. alias_method . As shown in the example given in that blog post, I simply want to alias a method to another within the same class. Which should I use? I always see alias used, but someone told me alias_method is better.
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SQLAlchemy: Creating vs. Reusing a Session
Just a quick question: SQLAlchemy talks about calling sessionmaker() once but calling the resulting Session() class each time you need to talk to your DB. For me that means the second I would do my first session.add(x) or something similar, I would first do
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Set selected option of select box
I want to set a option that was selected previously to be displayed on page load. I tried it with the following code:
16 An...
How can I make my own base image for Docker?
According to the Docker documentation , to build your own image, you must always specify a base image using the FROM instruction.
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Select first row in each GROUP BY group?
As the title suggests, I'd like to select the first row of each set of rows grouped with a GROUP BY .
17 Answers
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