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JComboBox Selection Change Listener?
...emEvents, though, one for the deselection of the previously selected item, and another for the selection of the new item. Just don't use both event types!
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What is a non-capturing group in regular expressions?
How are non-capturing groups, i.e. (?:) , used in regular expressions and what are they good for?
15 Answers
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“Templates can be used only with field access, property access, single-dimension array index, or sin
...he error message.
You are trying to pass in a method chain to be executed and it doesn't like it.
This is a perfect example of where the MVVM (Model-View-ViewModel) pattern comes in handy.
You could wrap up your Trainer model class in another class called TrainerViewModel that could work somethin...
“Collection was mutated while being enumerated” on executeFetchRequest
I'm stuck on a problem for hours now and having read everything about this on stackoverflow (and apply every advices found), I'm now officially in need for help. ;o)
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Techniques for Tracing Constraints
Here's the scenario: I've written some code with a type signature and GHC complains could not deduce x ~ y for some x and y . You can usually throw GHC a bone and simply add the isomorphism to the function constraints, but this is a bad idea for several reasons:
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what is reverse() in Django
...e sure what this is but it is used together with HttpResponseRedirect. How and when is this reverse() supposed to be used?
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Why does SIGPIPE exist?
From my understanding, SIGPIPE can only occur as the result of a write() , which can (and does) return -1 and set errno to EPIPE ... So why do we have the extra overhead of a signal? Every time I work with pipes I ignore SIGPIPE and have never felt any pain as a result, am I missing somethin...
Pandas aggregate count distinct
Let's say I have a log of user activity and I want to generate a report of total duration and the number of unique users per day.
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How to find where gem files are installed
...PATHS are only used first one. Is that right?
– ironsand
Sep 28 '13 at 22:27
10
gem env for short...
How do I calculate tables size in Oracle
Being used to (and potentially spoiled by) MSSQL, I'm wondering how I can get at tables size in Oracle 10g.
I have googled it so I'm now aware that I may not have as easy an option as sp_spaceused. Still the potential answers I got are most of the time outdated or don't work. Probably because I'm no...