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How to check if Location Services are enabled?
I'm developing an app on Android OS. I don't know how to check if Location Services are enabled or not.
22 Answers
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How to add new elements to an array?
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@tangens.I am new to android but your answer helped me.before finding answer i wasted many hours
– scott
Aug 27 '18 at 15:42
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getting type T from IEnumerable
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Or even worse write a method with yield returns and try to call GetType on a variable created with this method. It will tell you that it is not event a generic type. So basically there is no universal way to get T given an instance variable of type IEnumerable<T>
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Function pointers, Closures, and Lambda
I am just now learning about function pointers and, as I was reading the K&R chapter on the subject, the first thing that hit me was, "Hey, this is kinda like a closure." I knew this assumption is fundamentally wrong somehow and after a search online I didn't find really any analysis of this compari...
Setting DEBUG = False causes 500 Error
...UG = False , my site will generate 500 (using wsgi & manage.py runserver), and there is no error info in Apache error log and it will run normally when I change debug to True .
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oracle:完整剖析PL/SQL DEVELOPER与SQL PLUS字符集设置 - 数据库(内核) - ...
...hen selected, Unicode data will be fetched as such from the Oracle Server, and displayed as Unicode text. When disabled, Unicode data from the server will be converted to the character set of the Oracle Client, in accordance with the NLS_LANG key of the Oracle Home Registry. -----------from pl/sql...
How do getters and setters work?
I'm from the php world. Could you explain what getters and setters are and could give you some examples?
6 Answers
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How to determine if a list of polygon points are in clockwise order?
...gth (x2-x1). Notice the sign convention in x. Try this with some triangles and you'll soon see how it works.
– Beta
Jul 27 '09 at 14:20
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Android studio using > 100% CPU at all times - no background processes appear to be running
I've noticed Android Studio (when running) uses greater than 100% CPU at all times, even when it appears there are no background processes that the IDE is running (indexing, etc). I might suspect this were something specific to my box, but some fellow developers are encountering this as well.
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How to rename a single column in a data.frame?
...set the second column's name. Your object only has one column, so the command throws an error. This should be sufficient:
colnames(trSamp) <- "newname2"
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