大约有 43,100 项符合查询结果（耗时：0.0394秒） [XML]
Divide a number by 3 without using *, /, +, -, % operators
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What is the javascript filename naming convention? [closed]
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One possible naming convention is to use something similar to the naming scheme jQuery uses. I...
Reshaping data.frame from wide to long format
... idvar = c("Code", "Country"),
timevar = "Year",
times = 1950:1954)
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Get second child using jQuery
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grab the second child:
$(t).children().eq(1);
or, grab the second child <td>:
$(t).children('td').eq(1);
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TortoiseSVN icons not showing up under Windows 7
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How to update Ruby to 1.9.x on Mac?
... on my mac and I am trying to update to the current version of ruby on it (1.9.2) from the snow leopard default of 1.8.7. Can somebody point me to tutorial or explain the best method to update Ruby on my mac from 1.8 to 1.9.2? Thanks
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Factors in R: more than an annoyance?
... same. However, you end up with warnings in your code:
lm(Petal.Length ~ -1 + Species, data=iris)
# Call:
# lm(formula = Petal.Length ~ -1 + Species, data = iris)
# Coefficients:
# Speciessetosa Speciesversicolor Speciesvirginica
# 1.462 4.260 5.552 ...
ITunes review URL and iOS 7 (ask user to rate our app) AppStore show a blank page
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Ruby optional parameters
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This isn't possible with ruby currently. You can't pass 'empty' attributes to methods. The cl...