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How do I clear all options in a dropdown box?

...DropList"); var length = select.options.length; for (i = length-1; i >= 0; i--) { select.options[i] = null; } share | improve this answer | follow | ...
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PHP “php://input” vs $_POST

... 503 The reason is that php://input returns all the raw data after the HTTP-headers of the request, ...
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SQL - many-to-many table primary key

... | edited Apr 30 '15 at 3:16 answered Feb 3 '10 at 7:20 ...
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What does it mean if a Python object is “subscriptable” or not?

... | edited Apr 2 at 14:10 BiAiB 9,22466 gold badges3535 silver badges5454 bronze badges answered Oct 1...
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PHP cURL custom headers

... curl_setopt($ch, CURLOPT_HTTPHEADER, array( 'X-Apple-Tz: 0', 'X-Apple-Store-Front: 143444,12' )); http://www.php.net/manual/en/function.curl-setopt.php share | improve this a...
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Why is a 3-way merge advantageous over a 2-way merge?

... answered Nov 8 '10 at 23:36 JW.JW. 46.4k3030 gold badges106106 silver badges127127 bronze badges ...
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Why does this (null || !TryParse) conditional result in “use of unassigned local variable”?

...dynamic d) { int y; if(d || M(out y)) y = 10; return y; } } I see no reason why that should be illegal; if you replace dynamic with bool it compiles just fine. I'm actually meeting with the C# team tomorrow; I'll mention it to them. Apologies for the ...
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Convert String to Float in Swift

... 200 Swift 2.0+ Now with Swift 2.0 you can just use Float(Wage.text) which returns a Float? type....
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Re-ordering columns in pandas dataframe based on column name [duplicate]

I have a dataframe with over 200 columns. The issue is as they were generated the order is 11 Answers ...
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get NSDate today, yesterday, this Week, last Week, this Month, last Month… variables

...taken from Google NSDate *yesterday = [today dateByAddingTimeInterval: -86400.0]; NSDate *thisWeek = [today dateByAddingTimeInterval: -604800.0]; NSDate *lastWeek = [today dateByAddingTimeInterval: -1209600.0]; // To get the correct number of seconds in each month use NSCalendar NSDate *thisMonth...