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Programmatically update widget from activity/service/receiver

I know it's possible, but I can't figure out a way to trigger an update of my widget from the main activity. Isn't there some general intent I can broadcast? ...
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Set transparent background of an imageview on Android

...the below code for black: <color name="black">#000000</color> Now if you want to use opacity then you can use the below code: <color name="black">#99000000</color> And the below for opacity code: 100% — FF 95% — F2 90% — E6 85% — D9 80% — CC 75% — BF 70% — B3 ...
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What techniques can be used to speed up C++ compilation times?

...hniques Pimpl Idiom Take a look at the Pimpl idiom here, and here, also known as an opaque pointer or handle classes. Not only does it speed up compilation, it also increases exception safety when combined with a non-throwing swap function. The Pimpl idiom lets you reduce the dependencies between ...
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How to create function that returns nothing

... #variable_conflict use_variable DECLARE curtime timestamp := now(); BEGIN UPDATE users SET last_modified = curtime, comment = comment WHERE users.id = id; END; $$ LANGUAGE plpgsql; sh...
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How to var_dump variables in twig templates?

...you only present what you have been given is fine and all, but how do you know what is available? Is there a "list all defined variables" functionality in TWIG? Is there a way to dump a variable? ...
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Regex (grep) for multi-line search needed [duplicate]

...ine at the end of line, substituting it for null character. That is, grep knows where end of line is, but sees the input as one big line. -o print only matching. Because we're using -z, the whole file is like a single big line, so if there is a match, the entire file would be printed; this way it w...
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How to change column datatype in SQL database without losing data

...; Uncheck --> Prevent saving changes that required table re-creation. Now you can easily change the column name without recreating the table or losing u r records. share | improve this answer ...
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Vibrate and Sound defaults on notification

... The vibration now has a delay of 1000 ms. If you set the first one to 0, it will go off instantly. It's a { delay, vibrate, sleep, vibrate, sleep } pattern. – Tom Apr 30 '15 at 11:22 ...
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Regex to validate password strength

...ed to include your test case @PriyankBolia. See new robulink, which should now work. – lsu_guy Sep 18 at 19:56 add a comment  |  ...
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Designing function f(f(n)) == -n

...n and odd numbers, I should've thought of that. – Unknown Apr 8 '09 at 22:25 38 I think the most ...