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How to detect when an Android app goes to the background and come back to the foreground

... means that you would need to implement whatever you want done on resuming from background in all Activity of your Application. I believe the original question was looking for something like a "onResume" for Application and not Activity. – SysHex Aug 20 '13 at ...
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How does MySQL process ORDER BY and LIMIT in a query?

...e LIMIT clause can be used to constrain the number of rows returned by the SELECT statement. LIMIT takes one or two numeric arguments, which must both be nonnegative integer constants (except when using prepared statements). With two arguments, the first argument specifies the offset of the first ...
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How can I select random files from a directory in bash?

I have a directory with about 2000 files. How can I select a random sample of N files through using either a bash script or a list of piped commands? ...
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How can you determine how much disk space a particular MySQL table is taking up?

... For a table mydb.mytable run this for: BYTES SELECT (data_length+index_length) tablesize FROM information_schema.tables WHERE table_schema='mydb' and table_name='mytable'; KILOBYTES SELECT (data_length+index_length)/power(1024,1) tablesize_kb FROM information_schema....
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Select objects based on value of variable in object using jq

... Adapted from this post on Processing JSON with jq, you can use the select(bool) like this: $ jq '.[] | select(.location=="Stockholm")' json { "location": "Stockholm", "name": "Walt" } { "location": "Stockholm", "name": "Donald" } ...
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Difference between static STATIC_URL and STATIC_ROOT on Django

I am confused by static root and want to clarify things. 3 Answers 3 ...
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Delete column from SQLite table

... TRANSACTION; CREATE TEMPORARY TABLE t1_backup(a,b); INSERT INTO t1_backup SELECT a,b FROM t1; DROP TABLE t1; CREATE TABLE t1(a,b); INSERT INTO t1 SELECT a,b FROM t1_backup; DROP TABLE t1_backup; COMMIT; share | ...
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How to get distinct values for non-key column fields in Laravel?

...lder you can do it this way: $users = DB::table('users') ->select('id','name', 'email') ->groupBy('name') ->get(); share | improve this answer ...
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What is Objective C++? [closed]

...changeably. The class hierarchies are separate; a C++ class cannot inherit from an Objective-C class, and an Objective-C class cannot inherit from a C++ class. In addition, multi-language exception handling is not supported – asgs Dec 31 '19 at 8:08 ...
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Difference Between Select and SelectMany

I've been searching the difference between Select and SelectMany but I haven't been able to find a suitable answer. I need to learn the difference when using LINQ To SQL but all I've found are standard array examples. ...