大约有 40,000 项符合查询结果(耗时:0.0579秒) [XML]

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Statistics: combinations in Python

...i Sorry for the confusion. The page displays a 404 if javascript has been (selectively) disabled. I guess that's to discourage rogue AIs from incorporating archived Google Code Project sources quite so easily? – SeldomNeedy Feb 29 '16 at 2:20 ...
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Get column index from column name in python pandas

...pecified label or are duplicates, the index with the larger index value is selected: df = pd.DataFrame( {"pear": [1, 2, 3], "apple": [2, 3, 4], "orange": [3, 4, 5]}, index=[0, .9, 1.1]) df.index.get_indexer([0, 1]) # array([ 0, -1], dtype=int64) ...
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href overrides ng-click in Angular.js

...e($index, 1)">X</a>] http://docs.angularjs.org/api/ng.directive:select share | improve this answer | follow | ...
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Can I have multiple primary keys in a single table?

...hese practices, but there is nothing in the relational model that requires selecting a primary key among the candidate keys. share | improve this answer | follow ...
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How to format a Java string with leading zero?

... your own function. That would be a much better general solution than the selected answer. docjar.com/html/api/org/apache/commons/lang/… – kaliatech Oct 29 '10 at 13:01 3 ...
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Easiest way to copy a single file from host to Vagrant guest?

...the port should be taken from the UI of the Oracle VM VirtualBox Manager - select vm on the left , settings , network , port forwarding – Yordan Georgiev May 9 '15 at 6:59 1 ...
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Is it possible to force Excel recognize UTF-8 CSV files automatically?

...el Import the data using Data-->Import External Data --> Import Data Select the file type of "csv" and browse to your file In the import wizard change the File_Origin to "65001 UTF" (or choose correct language character identifier) Change the Delimiter to comma Select where to import to and ...
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Are email addresses case sensitive?

...eudocode: if (user.paidEmailFee) { // case sensitive email query = "select * from users where email LIKE ' + user.email + '" } else { // case insensitive email query = "select * from users where email ILIKE ' + user.email + '" } This way, you are mostly enforcing case insensitivity bu...
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Cannot find JavaScriptSerializer in .Net 4.0

... click References and do Add Reference, then from Assemblies->Framework select System.Web.Extensions. Now you should be able to add the following to your class file: using System.Web.Script.Serialization; share ...
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What's the difference between OpenID and OAuth?

... service. However, since OAuth does not support discovery, it requires pre-selecting and hard-coding the providers you decide to use. A user visiting your site cannot use any identifier, only those pre-selected by you. Also, OAuth does not have a concept of identity so using it for login means eithe...