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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 to add default value for html ? [closed]

...swered Jun 2 '14 at 16:54 bhavya_wbhavya_w 6,06455 gold badges2525 silver badges3636 bronze badges ...
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How to deep watch an array in angularjs?

There is an array of objects in my scope, I want to watch all the values of each object. 10 Answers ...
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Globally override key binding in Emacs

How can I set a key binding that globally overrides and takes precedence over all other bindings for that key? I want to override all major/minor mode maps and make sure my binding is always in effect. ...
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reformat in vim for a nice column layout

...ion for this. Locate to the longest word and place cursor after it. Remove all the extra whitespace using dw and vertical movement. Example of this technique demonstrated below: I don't find myself needing to align things often enough to install another plugin, so this was my preferred way of a...
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Turning off some legends in a ggplot

... You can use guide=FALSE in scale_..._...() to suppress legend. For your example you should use scale_colour_continuous() because length is continuous variable (not discrete). (p3 <- ggplot(mov, aes(year, rating, colour = length, shape = mpaa)) + sca...
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Rails: FATAL - Peer authentication failed for user (PG::Error)

... If you installed postresql on your server then just host: localhost to database.yml, I usually throw it in around where it says pool: 5. Otherwise if it's not localhost definitely tell that app where to find its database. development:...
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Access-Control-Allow-Origin Multiple Origin Domains?

Is there a way to allow multiple cross-domains using the Access-Control-Allow-Origin header? 31 Answers ...
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Find object by id in an array of JavaScript objects

... Basically I always use === because it works exactly like == in other programming languages. I consider == to be non-existent in JavaScript. – Vicky Chijwani Dec 11 '12 at 13:27 ...
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How do you get the index of the current iteration of a foreach loop?

...or iterating over collections that implement IEnumerable. It does this by calling GetEnumerator on the collection, which will return an Enumerator. This Enumerator has a method and a property: MoveNext() Current Current returns the object that Enumerator is currently on, MoveNext updates Current t...