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Should functions return null or an empty object?
...g data from functions. Is it better to return a Null or an empty object? And why should one do one over the other?
31 Ans...
How do I create a readable diff of two spreadsheets using git diff?
...ode repository. These are usually edited with gnumeric or openoffice.org, and are mostly used to populate databases for unit testing with dbUnit . There are no easy ways of doing diffs on xls files that I know of, and this makes merging extremely tedious and error prone.
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Building with Lombok's @Slf4j and Intellij: Cannot find symbol log
I have a maven project that builds with no problems from the command line. However, when I build it with IntelliJ, I get the error:
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custom listview adapter getView method being called multiple times, and in no coherent order
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The behavior between 2.3 and 4.x era ListView has changed significantly. The take away is, as ListView is designed, your cells/list_items need to be pure views and they need to be optimized for drawing quickly. According to the Google I/O talk on Lis...
Foreign Key to non-primary key
I have a table which holds data, and one of those rows needs to exist in another table. So, I want a foreign key to maintain referential integrity.
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IntelliJ IDEA way of editing multiple lines
I've seen this done in TextMate and I was wondering if there's a way to do it in IDEA.
20 Answers
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Why it's not possible to use regex to parse HTML/XML: a formal explanation in layman's terms
...a regular
expression) does not have memory apart from the state it's in, and if
you have arbitrarily deep nesting, you need an arbitrarily large
automaton, which collides with the notion of a finite automaton.
The definition of regular expressions is equivalent to the fact that a test of whe...
Maven parent pom vs modules pom
...e seem to be several ways to structure parent poms in a multiproject build and I wondering if anyone had any thoughts on what the advantages / drawbacks are in each way.
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Make Iframe to fit 100% of container's remaining height
I want to design a web page with a banner and an iframe. I hope the iframe can fill all the remaining page height and be resized automatically as the browser is resizing. Is it possible to get it done without writing JavaScript code, only with CSS?
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What is the difference between save and export in Docker?
I am playing around with Docker for a couple of days and I already made some images (which was really fun!). Now I want to persist my work and came to the save and export commands, but I don't fully understand them.
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