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Generate array of all letters and digits
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145
[*('a'..'z'), *('0'..'9')] # doesn't work in Ruby 1.8
or
('a'..'z').to_a + ('0'..'9').to_a ...
How to validate date with format “mm/dd/yyyy” in JavaScript?
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19 Answers
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What is the difference between return and return()?
I tested the above code in Chrome's console, and both returned 1 .
9 Answers
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Can you supply arguments to the map(&:method) syntax in Ruby?
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141
You can create a simple patch on Symbol like this:
class Symbol
def with(*args, &block)...
Why number 9 in kill -9 command in unix? [closed]
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13 Answers
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How to find the length of a string in R
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See ?nchar. For example:
> nchar("foo")
[1] 3
> set.seed(10)
> strn <- paste(sample(LETTERS, 10), collapse = "")
> strn
[1] "NHKPBEFTLY"
> nchar(strn)
[1] 10
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How can I use a file in a command and redirect output to the same file without truncating it?
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14 Answers
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The 'json' native gem requires installed build tools
I have ruby 1.9.2p180 (2011-02-18) [i386-mingw32] installed on my windows 7 machine. Now I tried to install the JSON gem using the command, "gem install json" and got the following error.
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Is there a way to access method arguments in Ruby?
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11 Answers
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