大约有 40,000 项符合查询结果(耗时:0.0518秒) [XML]

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How to read the database table name of a Model instance?

... Found the answer myself: the _meta attribute of an instance has the information: model_instance._meta.db_table share | improve this answer | ...
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Linear Regression and group by in R

... fits <- lmList(response ~ year | state, data=d) fits #------------ Call: lmList(formula = response ~ year | state, data = d) Coefficients: (Intercept) year CA -1.34420990 0.17139963 NY 0.00196176 -0.01852429 Degrees of freedom: 20 total; 16 residual Residual standard error: 0.820...
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JavaScript object: access variable property by name as string [duplicate]

...racket notation. If you NEED a function for it, here it is: function read_prop(obj, prop) { return obj[prop]; } To answer some of the comments below that aren't directly related to the original question, nested objects can be referenced through multiple brackets. If you have a nested objec...
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How to check if a file exists in Documents folder?

... Or just [0] via index accessing – temporary_user_name Dec 16 '14 at 0:09 firstObject is more safe than [0] a...
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Converting numpy dtypes to native python types

If I have a numpy dtype, how do I automatically convert it to its closest python data type? For example, 12 Answers ...
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How useful/important is REST HATEOAS ( maturity level 3)?

... members believe that a REST API has to be HATEOAS compliant and implement all Richardson's maturity levels ( http://martinfowler.com/articles/richardsonMaturityModel.html )! ...
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How to programmatically set drawableLeft on Android button?

I'm dynamically creating buttons. I styled them using XML first, and I'm trying to take the XML below and make it programattic. ...
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How to find and return a duplicate value in array

...ou're writing this code for some huge scaling data (and if so, you can actually just use C or Python), the provided answer is far more elegant/readable, and isnt' going to run that much slower compared to a linear time solution. furthermore, in theory, the linear time solution requires linear space,...
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SQL Case Sensitive String Compare

... Select * from a_table where attribute = 'k' COLLATE Latin1_General_CS_AS Did the trick. share | improve this answer | ...
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Registry Key '…' has value '1.7', but '1.6' is required. Java 1.7 is Installed and the Registry is P

... one of the server admins "updated" our Java to an older version and uninstalled the one we were using. Don't ask me why, I don't know. I re-installed Java 1.7 and uninstalled 1.6 along with the JREs. ...