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Pandas: drop a level from a multi-level column index?

... @yoonghm It is there, you are probably just calling it on columns that don't have a multi-index – matt harrison Dec 18 '18 at 14:59 1 ...
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How do I use boolean variables in Perl?

...isn't perfect, merely the best I've found. It's meant to be practical, not all-encompassing. Do note that value returned by your bool does stringify to 0. Also, you are discouraged from creating inconsistent overloads, and the values you return could be considered such. (e.g. a && can be opt...
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leading zeros in rails

...using a given padding character. str.rjust(integer, padstr=' ') → new_str If integer is greater than the length of str, returns a new String of length integer with str right justified and padded with padstr; otherwise, returns str. some_int = 5 some_int.to_s.rjust(2, '0') # => '05' ...
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Android and XMPP: Currently available solutions [closed]

... Edited comments > hi all > I am using asmack for developing my xmpp client,I am facing a problem > When i come from 1st time login I start my chatting with user B and receiving messages from user B also that is fine.i switch off my wifi and...
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Callback when CSS3 transition finishes

...AnimationEnd MSAnimationEnd", function(){ ... }); Note that you can pass all of the browser prefixed event strings into the bind() method simultaneously to support the event firing on all browsers that support it. Update: Per the comment left by Duck: you use jQuery's .one() method to ensure the...
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Detecting when user has dismissed the soft keyboard

... Wait wait wait, I just looked at this a third time - shouldn't the super call be to onKeyPreIme? Or is there a particular reason for it not to be so? – Erhannis Jul 3 '14 at 0:55 ...
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What is Linux’s native GUI API?

...heir own APIs to handle windows, events and other OS stuff. I have never really got a clear answer as to what Linux’s equivalent is? ...
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How do I save a String to a text file using Java?

In Java, I have text from a text field in a String variable called "text". 24 Answers ...
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Is there any way to hide “-” (Delete) button while editing UITableView

... equivalent to accepted answer with just the needed funcs: func tableView(_ tableView: UITableView, shouldIndentWhileEditingRowAt indexPath: IndexPath) -> Bool { return false } func tableView(_ tableView: UITableView, editingStyleForRowAt indexPath: IndexPath) -> UITableViewCellEditingSt...
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Add an element to an array in Swift

...red Jun 2 '14 at 20:33 Mick MacCallumMick MacCallum 122k4040 gold badges273273 silver badges274274 bronze badges ...