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How to update a value, given a key in a hashmap?
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17 Answers
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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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Ruby optional parameters
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This isn't possible with ruby currently. You can't pass 'empty' attributes to methods. The cl...
Why do people say there is modulo bias when using a random number generator?
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Reshaping data.frame from wide to long format
... idvar = c("Code", "Country"),
timevar = "Year",
times = 1950:1954)
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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 ...
How are multi-dimensional arrays formatted in memory?
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147
A static two-dimensional array looks like an array of arrays - it's just laid out contiguously...
Javascript shorthand ternary operator
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var startingNumber = startingNumber || 1;
Something like that what you're looking for, where...
Drop all the tables, stored procedures, triggers, constraints and all the dependencies in one sql st
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