data.table-package data.table %between% between %chin% chmatch %flike% like %ilike% like %inrange% between %like% like %notin% notin %plike% like . data.table .( data.table .() data.table .. data.table .BY special-symbols .EACHI special-symbols .GRP special-symbols .I special-symbols .Last.updated last.updated .N special-symbols .NGRP special-symbols .SD special-symbols := assign address address all.equal all.equal.data.table all.equal.data.table all.equal.data.table alloc.col truelength anyDuplicated duplicated anyDuplicated.data.table duplicated as.character.ITime IDateTime as.data.table as.data.table as.data.table.array as.data.table as.data.table.character as.data.table as.data.table.data.frame as.data.table as.data.table.data.table as.data.table as.data.table.Date as.data.table as.data.table.factor as.data.table as.data.table.integer as.data.table as.data.table.list as.data.table as.data.table.logical as.data.table as.data.table.matrix as.data.table as.data.table.numeric as.data.table as.data.table.ordered as.data.table as.data.table.xts as.data.table.xts as.Date.IDate IDateTime as.IDate IDateTime as.IDate.Date IDateTime as.IDate.default IDateTime as.ITime IDateTime as.ITime.character IDateTime as.ITime.default IDateTime as.ITime.POSIXlt IDateTime as.ITime.times IDateTime as.list.IDate IDateTime as.matrix as.matrix as.matrix.data.table as.matrix as.POSIXct.IDate IDateTime as.POSIXct.ITime IDateTime as.POSIXlt.ITime IDateTime as.xts.data.table as.xts.data.table auto-index datatable-optimize auto-indexing datatable-optimize autoindex datatable-optimize autoindexing datatable-optimize between between c.IDate IDateTime c.ITime IDateTime cdatatable cdt chgroup chmatch chmatch chmatch chorder chmatch CJ J class:data.table data.table-class copy copy cube groupingsets cube.data.table groupingsets data.table data.table data.table-class data.table-class data.table-optimize datatable-optimize data.table.optimize datatable-optimize datatable-optimize datatable-optimize datatable-symbols special-symbols datatable.optimize datatable-optimize dcast dcast.data.table dcast.data.table dcast.data.table droplevels fdroplevels droplevels.data.table fdroplevels duplicated duplicated duplicated.data.table duplicated except setops fastorder setorder fcase fcase fcoalesce coalesce fdroplevels fdroplevels fexcept setops fifelse fifelse fill nafill fintersect setops first last forder setorder forderv setorder format.ITime IDateTime format_col print.data.table format_col.default print.data.table format_col.expression print.data.table format_col.POSIXct print.data.table format_list_item print.data.table format_list_item.default print.data.table foverlaps foverlaps frank frank frankv frank fread fread froll froll frollapply froll frollmean froll frollsum froll fsetdiff setops fsetequal setops fsort fsort funion setops fwrite fwrite getDTthreads openmp-utils getNumericRounding setNumericRounding GForce datatable-optimize gforce datatable-optimize groupingsets groupingsets groupingsets.data.table groupingsets haskey setkey hour IDateTime I substitute2 IDate IDateTime IDate-class IDateTime IDateTime IDateTime IDateTime.default IDateTime ifelse fifelse indices setkey inrange between intersect setops is.data.table as.data.table is.na.data.table data.table isoweek IDateTime ITime IDateTime ITime-class IDateTime J J key setkey key<- deprecated lag shift last last Last.updated last.updated lead shift let assign like like locf nafill mday IDateTime mean.IDate IDateTime mean.ITime IDateTime measure measure measurev measure melt melt.data.table melt.data.table melt.data.table merge merge merge.data.table merge minute IDateTime month IDateTime moving froll na.fill nafill na.omit na.omit.data.table na.omit.data.table na.omit.data.table nafill nafill nocb nafill openMP openmp-utils openmp openmp-utils Ops.data.table data.table order setorder patterns patterns print.data.table print.data.table print.ITime IDateTime quarter IDateTime rank frank rbind rbindlist rbind.data.table rbindlist rbindlist rbindlist rep.IDate IDateTime rep.ITime IDateTime rleid rleid rleidv rleid roll froll rollapply froll rolling froll rollmean froll rollsum froll rollup groupingsets rollup.data.table groupingsets round.IDate IDateTime round.ITime IDateTime rounding datatable-optimize rowid rowid rowidv rowid second IDateTime seq.IDate IDateTime seq.ITime IDateTime set assign setalloccol truelength setattr setattr setcoalesce coalesce setcolorder setcolorder setDF setDF setdiff setops setDT setDT setDTthreads openmp-utils setequal setops setindex setkey setindexv setkey setkey setkey setkeyv setkey setnafill nafill setnames setattr setNumericRounding setNumericRounding setops setops setorder setorder setorderv setorder shift shift shouldPrint shouldPrint SJ J sliding froll special-symbols special-symbols split split split.data.table split strsplit tstrsplit subset subset.data.table subset.data.table subset.data.table substitute substitute2 substitute2 substitute2 tables tables test test test.data.table test.data.table timetaken timetaken transform transform.data.table transform.data.table transform.data.table transpose transpose truelength truelength trunc.ITime IDateTime tstrsplit tstrsplit union setops unique duplicated unique.data.table duplicated uniqueN duplicated update_dev_pkg update_dev_pkg wday IDateTime week IDateTime within transform.data.table within.data.table transform.data.table yday IDateTime year IDateTime yearmon IDateTime yearqtr IDateTime [.data.table data.table