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Friendly column finder for "not found" errors #2887

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MichaelChirico opened this issue May 18, 2018 · 1 comment
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Friendly column finder for "not found" errors #2887

MichaelChirico opened this issue May 18, 2018 · 1 comment
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@MichaelChirico
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enhancement
Milestone
1.11.6

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@MichaelChirico
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Consider:

DT = data.table(myname = 1, some_var = 2)
DT[somevar == 2]
#  Error in eval(.massagei(isub), x, parent.frame()) : 
#   object 'somevar' not found

Should be easy enough to run adist on names(DT) (or also ls()) to suggest some potential misspellings. Nothing too sophisticated of course, maybe just look within levensthein distance of 2 or 3. Truncated to 10 options or so in case there are numbered columns.
@MichaelChirico MichaelChirico self-assigned this May 18, 2018
@HughParsonage
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Or agrep:

 agrep("somevar", names(DT), value = TRUE)[1]
#> "some_var"

MichaelChirico pushed a commit that referenced this issue May 19, 2018
Closes #2887 -- adds a typo checker to i for convenience
9828d46
@jangorecki jangorecki added this to the 1.11.6 milestone May 19, 2018
@mattdowle mattdowle modified the milestones: 1.12.0, 1.11.6 Aug 20, 2018
@st-pasha st-pasha mentioned this issue Aug 21, 2018
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@MichaelChirico MichaelChirico

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@mattdowle @jangorecki @MichaelChirico @HughParsonage