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PostgreSQL LIKE query performance variations
...iation in response times regarding LIKE queries to a particular table in my database. Sometimes I will get results within 200-400 ms (very acceptable) but other times it might take as much as 30 seconds to return results.
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How to SSH to a VirtualBox guest externally through a host? [closed]
I have a Ubuntu VM running on my Windows 7 machine. How do I set it up so that I can access the webserver externally through SSH?
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Quick and easy file dialog in Python?
...user, they can select the file, and then it's loaded to the database. (In my use case, if they happened to chose the wrong file, it would fail parsing, and wouldn't be a problem even if it was loaded to the database.)
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On showing dialog i get “Can not perform this action after onSaveInstanceState”
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After few days I want share my solution how I've fixed it, to show DialogFragment you should to override show() method of it and call commitAllowingStateLoss() on Transaction object. Here is example in Kotlin:
override fun show(manager: FragmentManager...
How to read multiple text files into a single RDD?
...wildcards and even CSV of directories and wildcards. E.g.:
sc.textFile("/my/dir1,/my/paths/part-00[0-5]*,/another/dir,/a/specific/file")
As Nick Chammas points out this is an exposure of Hadoop's FileInputFormat and therefore this also works with Hadoop (and Scalding).
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Inserting HTML elements with JavaScript
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Fair enough. My apologies. I just feel that there're so many abstractions on here with zero caveats mentioned.
– Crescent Fresh
May 3 '09 at 13:12
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Using Application context everywhere?
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In my experience this approach shouldn't be necessary. If you need the context for anything you can usually get it via a call to View.getContext() and using the Context obtained there you can call Context.getApplicationContext(...
How to force garbage collection in Java?
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In my experience, this method always invokes the garbage collector. It does so with enough regularity that my plots of memory use versus number of objects declared are always strictly linear (accounting for padding, etc.).
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Dialog throwing "Unable to add window — token null is not for an application” with getApplication()
My Activity is trying to create an AlertDialog which requires a Context as a parameter. This works as expected if I use:
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How to get overall CPU usage (e.g. 57%) on Linux [closed]
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top -bn1 seems wildly inaccurate on my FC20 system. top -bn2 seems to work well.
– Martin Tournoij
Feb 19 '14 at 0:58
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