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How to read data when some numbers contain commas as thousand separator?
..."", and then convert the string to numeric using as.numeric:
y <- c("1,200","20,000","100","12,111")
as.numeric(gsub(",", "", y))
# [1] 1200 20000 100 12111
This was also answered previously on R-Help (and in Q2 here).
Alternatively, you can pre-process the file, for instance with sed in uni...
Why would introducing useless MOV instructions speed up a tight loop in x86_64 assembly?
...ated the alias and allowed the branch to be predicted correctly
Your Core2 doesn't keep a separate history record for each conditional jump. Instead it keeps a shared history of all conditional jumps. One disadvantage of global branch prediction is that the history is diluted by irrelevant inform...
How to prevent line break at hyphens on all browsers
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I’m afraid there’s no simpler way to do it reliably than splitting the text to “words” (...
How to add elements of a Java8 stream into an existing List
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NOTE: nosid's answer shows how to add to an existing collection using forEachOrdered(). This i...
Java: Difference between the setPreferredSize() and setSize() methods in components
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Dave Jarvis
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answered Nov 23 '09 at 15:32
SboddSbodd...
CoffeeScript, When to use fat arrow (=>) over arrow (->) and vice versa
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edited Dec 21 '14 at 19:59
answered Jan 23 '12 at 0:18
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Does the join order matter in SQL?
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231
For INNER joins, no, the order doesn't matter. The queries will return same results, as long a...
Generating an MD5 checksum of a file
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edited Jan 29 at 13:51
user2653663
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What is the difference between UTF-8 and Unicode?
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520
To expand on the answers others have given:
We've got lots of languages with lots of character...
