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Sending files using POST with HttpURLConnection

...nn = (HttpURLConnection) url.openConnection(); conn.setReadTimeout(10000); conn.setConnectTimeout(15000); conn.setRequestMethod("POST"); conn.setUseCaches(false); conn.setDoInput(true); conn.setDoOutput(true); conn.setRequestProperty("Connecti...
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How do I modify fields inside the new PostgreSQL JSON datatype?

...the end of the array: SELECT jsonb_set('{"a":[null,{"b":[1,2]}]}', '{a,1,b,1000}', jsonb '3', true) -- will yield jsonb '{"a":[null,{"b":[1,2,3]}]}' For inserting into JSON array (while preserving all of the original values), the jsonb_insert() function can be used (in 9.6+; this function only, in ...
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Android: How can I pass parameters to AsyncTask's onPreExecute()?

...tring input1 = "test"; boolean input2 = true; int input3 = 100; long input4 = 100000000; new MyTask(input3, input4).execute(input1, input2); } private class MyTaskResult { String text1; String text2; } private class MyTask extends As...
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How to paste yanked text into the Vim command line

... Isn't there a badge “100/1 length ratio between answer and question?” :) – Benoit Oct 22 '10 at 13:35 8 ...
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How is “=default” different from “{}” for default constructor and destructor?

...concerned, you the rights of a trivial type" I'd fix it but I'm not quuite 100% sure what was intended. – jcoder Nov 28 '12 at 8:50 2 ...
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How to prevent Browser cache for php site

... can process 754 MiB/s without blinking. (openssl speed md5) Combined, a 100KB CSS file would have a combined additional overhead of… 129µs (microseconds, 0.1295ms) + 8ns (which does not meaningfully contribute to the final number) = 129µs. – amcgregor Ju...
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How to filter SQL results in a has-many-through relation

....club(id) ); INSERT INTO tmp.student(id) SELECT generate_series(1,1000) ; INSERT INTO tmp.club(id) SELECT generate_series(1,100) ; INSERT INTO tmp.student_club(student_id,club_id) SELECT st.id , cl.id FROM tmp.student st, tmp.club cl ; DELETE FROM tmp.student_clu...
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What does the CSS rule “clear: both” do?

...rder-box; } header, footer { border: 5px solid #000; height: 100px; } aside { float: left; width: 30%; border: 5px solid #000; height: 300px; } section { float: left; width: 70%; border: 5px solid #000; height: 300px; } .clear { ...
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How do I give text or an image a transparent background using CSS?

... .background { position: absolute; top: 0px; left: 0px; width: 100%; height: 100%; background-color: Black; z-index: 1; /* These three lines are for transparency in all browsers. */ -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=50)"; filter: alpha(opacity...
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Is JavaScript guaranteed to be single-threaded?

... l.value+= 'log in\n'; l.focus(); l.value+= 'log out\n'; }, 100); i.focus(); <textarea id="log" rows="20" cols="40"></textarea> <input id="inp"> Results in log in, blur, log out on all except IE. These events don't just fire because you called focus() direc...