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Uninitialized constant ActiveSupport::Dependencies::Mutex (NameError)
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This is an incompatibility between Rails 2.3.8 and recent versions of RubyGems. Upgrade to the latest 2.3 version (2.3.11 as of today).
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Find the most common element in a list
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21 Answers
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Sublime text 2 - find and replace globally ( all files and in all directories )
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2 Answers
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Convert decimal to hexadecimal in UNIX shell script
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edited Dec 19 '08 at 2:31
answered Dec 18 '08 at 21:46
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How do you increase the max number of concurrent connections in Apache?
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Value of i for (i == -i && i != 0) to return true in Java
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126
The only int value for which it works is Integer.MIN_VALUE.
It's because integers are negated...
Does JavaScript have a method like “range()” to generate a range within the supplied bounds?
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mysql :: insert into table, data from another table?
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INSERT INTO action_2_members (campaign_id, mobile, vote, vote_date)
SELECT campaign_id, from_number, received_msg, date_received
FROM `received_txts`
WHERE `campaign_id` = '8'
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filter for complete cases in data.frame using dplyr (case-wise deletion)
...e other solutions above do not.
str(df %>% na.omit)
## 'data.frame': 2 obs. of 2 variables:
## $ x1: num 1 2
## $ x2: num 1 2
## - attr(*, "na.action")= 'omit' Named int 3 4
## ..- attr(*, "names")= chr "3" "4"
ADDED Have updated to reflect latest version of dplyr and comments.
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How do I concatenate two lists in Python?
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24 Answers
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