Displaying 3 results from an estimated 3 matches for "hijklmn".
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hijklm
2018 May 26
2
Buffering in R 3.5 connections causes incorrect data in readChar
...that readChar is not aware of the buffering,
so it reads from the end of the buffer, rather than the current position in
the file. This is a significant change of behavior from R-3.4.4.
Below is a test case that I used to home in on the problem.
---
p<-"test2.txt"
cat("abcdefg
hijklmn
opqrstu",file=p)
cat("read char after readline (h)\n")
con <- file(p,"r")
invisible(readLines(con,1))
print(readChar(con,1))
close(con)
cat("read char after readline and seek (h)\n")
con <- file(p,"r")
invisible(readLines(con,1))
invisible(seek(c...
2018 May 29
1
Buffering in R 3.5 connections causes incorrect data in readChar
...ut the example uses it on a text
> connection. Buffering and pushback are only used on (readable) text
> connections. I will check whether we could report a runtime error.
>
> Best
> Tomas
>
> ---
>>
>> p<-"test2.txt"
>> cat("abcdefg
>> hijklmn
>> opqrstu",file=p)
>>
>> cat("read char after readline (h)\n")
>> con <- file(p,"r")
>> invisible(readLines(con,1))
>> print(readChar(con,1))
>> close(con)
>>
>> cat("read char after readline and seek (h)\n"...
2018 May 29
0
Buffering in R 3.5 connections causes incorrect data in readChar
...t
only be used with binary connections, but the example uses it on a text
connection. Buffering and pushback are only used on (readable) text
connections. I will check whether we could report a runtime error.
Best
Tomas
> ---
>
> p<-"test2.txt"
> cat("abcdefg
> hijklmn
> opqrstu",file=p)
>
> cat("read char after readline (h)\n")
> con <- file(p,"r")
> invisible(readLines(con,1))
> print(readChar(con,1))
> close(con)
>
> cat("read char after readline and seek (h)\n")
> con <- file(p,"r&quo...