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fread breaks with reading numeric fields as integer via colClasses #2863
Description
The following examples breaks in the latest release:
library(data.table)
csv <- "
a,b,c
1,2,3.0
2,3,4.5
"
fread(csv, colClasses = c("integer", "integer", "integer")) a b c
1: 1 2 4.658976e-310
2: 2 3 4.658976e-310
It does not work even if c is purely integer but with decimal points:
a,b,c
1,2,3.0
2,3,4.0
My session info:
R version 3.4.4 (2018-03-15)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 18.04 LTS
Matrix products: default
BLAS: /usr/lib/x86_64-linux-gnu/openblas/libblas.so.3
LAPACK: /usr/lib/x86_64-linux-gnu/libopenblasp-r0.2.20.so
locale:
[1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8 LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8 LC_PAPER=en_US.UTF-8
[8] LC_NAME=C LC_ADDRESS=C LC_TELEPHONE=C LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] data.table_1.11.2
loaded via a namespace (and not attached):
[1] compiler_3.4.4 tools_3.4.4
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