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Design Patterns: Factory vs Factory method vs Abstract Factory
...ch concrete implementation it is getting.
Factory Method: Client doesn't know what concrete classes it will be required to create at runtime, but just wants to get a class that will do the job.
AbstactFactory: When your system has to create multiple families of products or you want to provide a l...
Favorite Visual Studio keyboard shortcuts [closed]
...e some collapsed in a region, for example, it won't search that. I don't know if this is a feature or a bug!
– Adam Neal
Jan 7 '09 at 21:00
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How to write to a JSON file in the correct format
...mp.json","w") do |f|
f.write(tempHash.to_json)
end
Your temp.json file now looks like:
{"key_a":"val_a","key_b":"val_b"}
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How to change the value of ${user} variable used in Eclipse templates
... The risk is that this will break any plug in that needs to know the user ID (which is the documented value of the user.name property). It would be nice if there was a better way to adjust the value Eclipse will use for that variable.
– Diastrophism
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How to unload a package without restarting R
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@AriB.Friedman, now as a question.
– Eric Fail
Jul 9 '13 at 12:41
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How to fire AJAX request Periodically?
...on.
(function worker() {
$.get('ajax/test.html', function(data) {
// Now that we've completed the request schedule the next one.
$('.result').html(data);
setTimeout(worker, 5000);
});
})();
For simplicity I used the success callback for scheduling. The down side of this is one fail...
Overwrite or override
... have, basically, 2 options in hand:
All the things come through and you know that you step in the right path. So you want to not only keep the previous models but also keep enhancing them. Though, how come? Probably by adding some new features to the existing models! Now new models have all the fe...
IN vs OR in the SQL WHERE Clause
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I assume you want to know the performance difference between the following:
WHERE foo IN ('a', 'b', 'c')
WHERE foo = 'a' OR foo = 'b' OR foo = 'c'
According to the manual for MySQL if the values are constant IN sorts the list and then uses a bi...
FontAwesome icons not showing. Why?
...figured it out. I've encountered this problem in the past too, and didn't know why, but now I know.
– adrianmc
Feb 17 '16 at 3:17
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How to detect input type=file “change” for the same file?
...an simply set to null the file path every time user clicks on the control. Now, even if the user selects the same file, the onchange event will be triggered.
<input id="file" onchange="file_changed(this)" onclick="this.value=null;" type="file" accept="*/*" />
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