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Get unique values from a list in python [duplicate]

...ch, 2019 And a 3rd solution, which is a neat one, but kind of slow since .index is O(n). mylist = [u'nowplaying', u'PBS', u'PBS', u'nowplaying', u'job', u'debate', u'thenandnow'] unique = [x for i, x in enumerate(mylist) if i == mylist.index(x)] UPDATE - Oct, 2016 Another solution with reduce, ...
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Why is exception.printStackTrace() considered bad practice?

...archiving the existing contents of the file/device. or the file/device actually discards all data written to it, as is the case of /dev/null. Inferring from the above, invoking Throwable.printStackTrace() constitutes valid (not good/great) exception handling behavior, only if you do not have Sy...
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How to avoid mysql 'Deadlock found when trying to get lock; try restarting transaction'

...st, then table B). Another reason for deadlock in database can be missing indexes. When a row is inserted/update/delete, the database needs to check the relational constraints, that is, make sure the relations are consistent. To do so, the database needs to check the foreign keys in the related tab...
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doGet and doPost in Servlets

...ould use doPost() when you want to intercept on HTTP POST requests. That's all. Do not port the one to the other or vice versa (such as in Netbeans' unfortunate auto-generated processRequest() method). This makes no utter sense. GET Usually, HTTP GET requests are idempotent. I.e. you get exactly t...
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Border length smaller than div width?

...iv { width : 200px; height : 50px; position: relative; z-index : 1; background: #eee; } div:before { content : ""; position: absolute; left : 0; bottom : 0; height : 1px; width : 50%; /* or 100px */ border-bottom:1px solid magenta; } <div&gt...
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Data structure for loaded dice?

...er to increase accuracy of the probability. Populate this array using the index (normalized by xN) as the cumulative value and, in each 'slot' in the array, store the would-be dice roll if this index comes up. Maybe I could explain easier with an example: Using three dice: P(1) = 0.2, P(2) = 0.5,...
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Can I use a function for a default value in MySql?

...f their DB package, and it's not as feature rich as we'd like. http://www.phpbuilder.com/board/showthread.php?t=10349169 share | improve this answer | follow ...
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Can you pass parameters to an AngularJS controller on creation?

...he vehicle for stitching the pieces together. Here's an example: <!-- index.html --> <div id="module1"> <div ng-controller="MyCtrl"> <div>{{foo}}</div> </div> </div> <div id="module2"> <div ng-controller="MyCtrl"> &l...
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How dangerous is it to access an array out of bounds?

...rts of my program or even beyond that) or I am trying to set a value to an index outside of the array. The program sometimes crashes, but sometimes just runs, only giving unexpected results. ...
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Jump to matching XML tags in Vim

... There is a vim plugin called matchit.vim . You can find it here: http://www.vim.org/scripts/script.php?script_id=39 . It was created pretty much the exact purpose you describe. Install that, place your cursor on the body of the tag (not the <&g...