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Tag data-table - This is page 12 - GeneraCodice
R: Checking if a set of variables forms a unique index
https://www.generacodice.com/en/articolo/13044508/r-checking-if-a-set-of-variables-forms-a-unique-index
r
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data.table
StackOverflow
Fastest way to extract hour from time (HH:MM)
https://www.generacodice.com/en/articolo/13020436/fastest-way-to-extract-hour-from-time-hh-mm
time
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r
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hour
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data.table
StackOverflow
Calculation on subset of data without first saving subset as new data.frame
https://www.generacodice.com/en/articolo/13018051/calculation-on-subset-of-data-without-first-saving-subset-as-new-data-frame
r
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dataframe
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subset
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plyr
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data.table
StackOverflow
Is a copy made when function returns a data.table?
https://www.generacodice.com/en/articolo/13011919/is-a-copy-made-when-function-returns-a-data-table
r
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data.table
StackOverflow
Conditionally remove duplicate elements from a data.table
https://www.generacodice.com/en/articolo/13005559/conditionally-remove-duplicate-elements-from-a-data-table
merge
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duplicates
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r
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conditional-statements
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data.table
StackOverflow
sort data.table by a column within each key
https://www.generacodice.com/en/articolo/12989890/sort-data-table-by-a-column-within-each-key
r
-
data.table
StackOverflow
R data.table speed up SI / Metric Conversion
https://www.generacodice.com/en/articolo/12971152/r-data-table-speed-up-si-metric-conversion
performance
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metric
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r
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data.table
StackOverflow
In R data.table multiplication by column name based on values of another column
https://www.generacodice.com/en/articolo/12963052/in-r-data-table-multiplication-by-column-name-based-on-values-of-another-column
r
-
data.table
StackOverflow
How keep vector-length and positions despite NULLs
https://www.generacodice.com/en/articolo/12955705/how-keep-vector-length-and-positions-despite-nulls
r
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data.table
StackOverflow
Join of two data.tables fails
https://www.generacodice.com/en/articolo/12937108/join-of-two-data-tables-fails
lookup
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join
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r
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data.table
StackOverflow
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