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What is the Java ?: operator called and what does it do?
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Yes, it is a shorthand form of
int count;
if (isHere)
count = getHereCount(index);
else
count = getAwayCount(index);
It's called the conditional operator. Many people (erroneously) call it the ternary operator, because it's the only te...
Django filter queryset __in for *every* item in list
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Summary:
One option is, as suggested by jpic and sgallen in the comments, to add .filter() for each category. Each additional filter adds more joins, which should not be a problem for small set of categories.
There is the aggregation approach. This query would be short...
How do I decompile a .NET EXE into readable C# source code?
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Reflector and its add-in FileDisassembler.
Reflector will allow to see the source code. FileDisassembler will allow you to convert it into a VS solution.
shar...
Best way to create unique token in Rails?
... heard to guess, it's more like a short url identifier than anything else, and I want to keep it short. I've followed some examples I've found online and in the event of a collision, I think the code below will recreate the token, but I'm not real sure. I'm curious to see better suggestions, thoug...
.NET Configuration (app.config/web.config/settings.settings)
... have a .NET application which has different configuration files for Debug and Release builds. E.g. the debug app.config file points to a development SQL Server which has debugging enabled and the release target points to the live SQL Server. There are also other settings, some of which are differ...
jQuery .live() vs .on() method for adding a click event after loading dynamic html
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If you want the click handler to work for an element that gets loaded dynamically, then you set the event handler on a parent object (that does not get loaded dynamically) and give it a selector that matches your dynamic object like this:
$('#pare...
Neo4j - Cypher vs Gremlin query language
...o options for performing complex queries - Cypher (Neo4j's query language) and Gremlin (the general purpose graph query/traversal language).
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Bootstrap 3 Navbar with Logo
...to use the Bootstrap 3 default navbar with an image logo instead of text branding. What's the proper way of doing this without causing any issues with different screen sizes? I assume this a common requirement, but I haven't yet seen a good code sample. A key requirement other than having acceptable...
How to remove the arrow from a select element in Firefox
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Okay, I know this question is old, but 2 years down the track and mozilla have done nothing.
I've come up with a simple workaround.
This essentially strips all formatting of the select box in firefox and wraps a span element around the select box with your custom style, but should o...
Java serialization: readObject() vs. readResolve()
The book Effective Java and other sources provide a pretty good explanation on how and when to use the readObject() method when working with serializable Java classes. The readResolve() method, on the other hand, remains a bit of a mystery. Basically all documents I found either mention only one o...