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Avoiding SQL injection without parameters
...ametrized sql queries in our code. We have two sides in the discussion: Me and some others that say we should always use parameters to safeguard against sql injections and the other guys that don't think it is necessary. Instead they want to replace single apostrophes with two apostrophes in all str...
Android, ListView IllegalStateException: “The content of the adapter has changed but ListView did no
... I want to do : run a background thread which calculates ListView contents and update ListView partially, while results are calculated.
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What is the difference between typeof and instanceof and when should one be used vs. the other?
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typeof []; //object
{} instanceof Object; // true
typeof {}; // object
And the last one is a little bit tricky:
typeof null; // object
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Was PreferenceFragment intentionally excluded from the compatibility package?
I'm looking to write preferences that can be applied to both 3.0 and pre-3.0 devices. Discovering that PreferenceActivity contains deprecated methods (although these are used in the accompanying sample code), I looked at PreferenceFragement and the compatibility package to solve my woes.
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Android: how to handle button click
Having a solid experience in non-Java and non-Android area, I'm learning Android.
10 Answers
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How do I find Waldo with Mathematica?
...y' outside of North America] puzzles, using Mathematica (image-processing and other functionality)?
5 Answers
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When should I choose Vector in Scala?
It seems that Vector was late to the Scala collections party, and all the influential blog posts had already left.
6 Answ...
How are Python's Built In Dictionaries Implemented?
...now how the built in dictionary type for python is implemented? My understanding is that it is some sort of hash table, but I haven't been able to find any sort of definitive answer.
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Are there disadvantages to using a generic varchar(255) for all text-based fields?
...se Ruby on Rails migrations map String fields to VARCHAR(255) by default and I never bothered to override it).
7 Answer...
What is android:weightSum in android, and how does it work?
I want to know: What is android:weightSum and layout weight, and how do they work?
9 Answers
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