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To find whether a column exists in data frame or not
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To get the grepl a bit more precise, you could use grepl("^d$",names(dat)), to ensure that a column with name dd does not return TRUE.
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Is there any difference between __DIR__ and dirname(__FILE__) in PHP?
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d-_-b
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answered May 1 '10 at 9:28
Pascal MARTINPascal MARTIN
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iPhone - Get Position of UIView within entire UIWindow
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answered Sep 23 '09 at 11:32
Nikolai RuheNikolai Ruhe
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brew install gcc too time consuming
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Tim SmithTim Smith
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In Go's http package, how do I get the query string on a POST request?
...kouton
– Aditya Varma
Sep 25 '17 at 11:09
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Use of undeclared identifier 'kUTTypeMovie'
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The dudeThe dude
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Correct way to use _viewstart.cshtml and partial Razor views?
...indmarcind
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'Specified condition “$(PackageAsSingleFile)” evaluates to “” instead of a boolean?
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Rusty DivineRusty Divine
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Permanently Set Postgresql Schema Path
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nhahtdh
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answered Feb 14 '14 at 22:57
joshperryjoshperry
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How do I get a string format of the current date time, in python?
...-14_16:40:52.txt
2a: March 04, 2018
2b: March 04, 2018
3: Today is 2018-11-11 yay
Description:
Using the new string format to inject value into a string at placeholder {}, value is the current time.
Then rather than just displaying the raw value as {}, use formatting to obtain the correct da...