大约有 47,000 项符合查询结果(耗时:0.0459秒) [XML]

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What is the difference between a database and a data warehouse?

...e acount that how they say over, OLTP Tables they have to be normalized in order not to have inconsistences . the normalization is not so complicated to do in a E-R schema but it´s much more complicate for Star-Schema or Snow-Flow thats. These Schemas are made to ease a read in the Database and no...
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Calling parent class __init__ with multiple inheritance, what's the right way?

...he other hand, it's easier to make mistakes. For example if you change the order of Foo and Bar (like class FooBar(Bar, Foo)), you'd have to update the super calls to match. Without super you don't have to worry about this, and the code is much more readable. One of the classes is a mixin. A mixin...
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How to change theme for AlertDialog

... someone could help me out. I am trying to create a custom AlertDialog. In order to do this, I added the following line of code in styles.xml ...
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Using tags in the with other HTML

...t to have embedded CSS that only applies to a particular chunk of HTML, in order to develop encapsulated, modular components with specific stylings. Update as of Feb 2019, according to the Mozilla documentation, the scoped attribute is deprecated. Chrome stopped supporting it in version 36 (2014...
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Difference between Lookup() and Dictionary(Of list())

...ogically can hold data organized in a similar way and both are of the same order of efficiency. The main difference is a Lookup is immutable: it has no Add() methods and no public constructor (and as Jon mentioned you can query a non-existent key without an exception and have the key as part of the...
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Why JSF calls getters multiple times

...public Boolean getGmapsAutoComplete() { switch (page) { case "/orders/pf_Add.xhtml": case "/orders/pf_Edit.xhtml": case "/orders/pf_EditDriverVehicles.xhtml": gmapsAutoComplete = true; break; default: gmapsAutoComplete = false; ...
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Defining Z order of views of RelativeLayout in Android

I would like to define the z order of the views of a RelativeLayout in Android. 13 Answers ...
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Disable ONLY_FULL_GROUP_BY

...ution): you have to put the description of sql_mode inside a my.cnf file (/etc/my.cnf for instance) and restart the server. For instance, insert (below the [mysqld] section) sql_mode = "STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITU...
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What is the point of a private pure virtual function?

...lass. That is the OOP rules and it applies on all language that is OOP. In order for a derived class to implement its base class private virtual method, it has to be a friend of the base class. Qt has taken the same approach when they implemented their XML DOM document model. –...
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Convert Mercurial project to Git [duplicate]

... are probably better off not doing the conversion. I did the following in order to get the repo ready for a second conversion attempt: hg update -C stable hg merge stable/hotfix-feature hg ci -m "Merge with stable branch" hg push git+ssh://git@bitbucket.org:myaccount/myrepo.git After this I had ...