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How to retrieve an element from a set without removing it?

...ent from s Or... e = next(iter(s)) But in general, sets don't support indexing or slicing. share | improve this answer | follow | ...
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How to link a Facebook app with an existing fan page

...ou will find "App Page". There you will be able to create a new page or if all went well, select your page from a list. I found the info in the little question-mark next to "App page". I hope this helps. share | ...
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OO Design in Rails: Where to put stuff

.../configurable.rb module Configurable ... end class Model include Indexable end # controllers/foo_controller.rb class FooController < ApplicationController include Indexable end # controllers/bar_controller.rb class BarController < ApplicationController include Indexable end ...
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Disable time in bootstrap date time picker

... I tried all of the solutions posted here but none of them worked for me. I managed to disable the time by using this line of code in my jQuery: $('#datetimepicker4').datetimepicker({ format: 'YYYY-MM-DD' }); This set the forma...
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CSS: How to position two elements on top of each other, without specifying a height?

... and some colors, so You can see the result. You can also easily change z-index each of descendant elements, to manipulate its visibility (which one should be on top). .container_row{ display: grid; } .layer1, .layer2{ grid-column: 1; grid-row: 1; } .layer1 span{ color: #f...
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When is each sorting algorithm used? [closed]

...s of merge- and heap sorts. http://corte.si/posts/code/visualisingsorting/index.html and http://corte.si/posts/code/timsort/index.html also have some cool images comparing various sorting algorithms. share | ...
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Datatype for storing ip address in SQL Server

...mpares, always use the binary form if you want to be able to leverage your indexes. UPDATE: I wanted to add that one way to address the inherent performance problems of scalar UDFs in SQL Server, but still retain the code-reuse of a function is to use an iTVF (inline table-valued function) inste...
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Youtube iframe wmode issue

... Just a tip!--make sure you up the z-index on the element you want to be over the embedded video. I added the wmode querystring, and it still didn't work...until I upped the z-index of the other element. :) ...
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Distributed sequence number generation?

... sequence numbers is easy to set position for bitmap index, but unique id sometimes too long (64bit or 128bit), how can unique id mapping to a bitmap index position? Thanks. – brucenan Nov 13 '15 at 6:30 ...
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Selecting pandas column by location

... The above link is deprecated because the indexing docs have since been restructured: pandas.pydata.org/pandas-docs/stable/…. As of today, in which the most recent version is 0.21.0, iloc remains the documented approach to accessing a column by position. ...