When DTLforeach is used with a condition, DTLiflastrow does not work
In the following code, my dataset is {1,2,3,4}.
With no filter, DTLiffirstrow will return true at "1" and DTLiflastrow will return true at "4".
This is what I expect from these functions.
When I filter the dataset to {2,3},
DTLiffisrtrow returns true at "2". Perfect.
But DTLiflastrow is always false. I would expect it to return true for the value "3".
documentclass{article}
usepackage{datatool}
DTLnewdb{table}
DTLnewrow{table}
DTLnewdbentry{table}{C1}{1}
DTLnewrow{table}
DTLnewdbentry{table}{C1}{2}
DTLnewrow{table}
DTLnewdbentry{table}{C1}{3}
DTLnewrow{table}
DTLnewdbentry{table}{C1}{4}
begin{document}
DTLforeach*%
[DTLisclosedbetween{COne}{2}{3}]%
{table}%
{COne=C1}%
{%
COne%
DTLiffirstrow{FIRST}{}%
DTLiflastrow{LAST}{}%
\%
}%
end{document}
How could I detect the last row of a filtered set of data?
datatool
asked Mar 22 at 20:43
Joseph MarieJoseph Marie
1588
add a comment |
In the following code, my dataset is {1,2,3,4}.
With no filter, DTLiffirstrow will return true at "1" and DTLiflastrow will return true at "4".
This is what I expect from these functions.
When I filter the dataset to {2,3},
DTLiffisrtrow returns true at "2". Perfect.
But DTLiflastrow is always false. I would expect it to return true for the value "3".
documentclass{article}
usepackage{datatool}
DTLnewdb{table}
DTLnewrow{table}
DTLnewdbentry{table}{C1}{1}
DTLnewrow{table}
DTLnewdbentry{table}{C1}{2}
DTLnewrow{table}
DTLnewdbentry{table}{C1}{3}
DTLnewrow{table}
DTLnewdbentry{table}{C1}{4}
begin{document}
DTLforeach*%
[DTLisclosedbetween{COne}{2}{3}]%
{table}%
{COne=C1}%
{%
COne%
DTLiffirstrow{FIRST}{}%
DTLiflastrow{LAST}{}%
\%
}%
end{document}
How could I detect the last row of a filtered set of data?
datatool
asked Mar 22 at 20:43
Joseph MarieJoseph Marie
1588
There's no way fordatatoolto know it's on the last filtered row on a single pass. It would require two passes: first to find out which is the last row of the filtered set and the second to compare the current row with that value. (datatoolknows how many rows the database has but the last row may be filtered.DTLiflastrowcan only compare the current row index with the total number of rows.)
– Nicola Talbot
yesterday
add a comment |
In the following code, my dataset is {1,2,3,4}.
With no filter, DTLiffirstrow will return true at "1" and DTLiflastrow will return true at "4".
This is what I expect from these functions.
When I filter the dataset to {2,3},
DTLiffisrtrow returns true at "2". Perfect.
But DTLiflastrow is always false. I would expect it to return true for the value "3".
documentclass{article}
usepackage{datatool}
DTLnewdb{table}
DTLnewrow{table}
DTLnewdbentry{table}{C1}{1}
DTLnewrow{table}
DTLnewdbentry{table}{C1}{2}
DTLnewrow{table}
DTLnewdbentry{table}{C1}{3}
DTLnewrow{table}
DTLnewdbentry{table}{C1}{4}
begin{document}
DTLforeach*%
[DTLisclosedbetween{COne}{2}{3}]%
{table}%
{COne=C1}%
{%
COne%
DTLiffirstrow{FIRST}{}%
DTLiflastrow{LAST}{}%
\%
}%
end{document}
How could I detect the last row of a filtered set of data?
datatool
asked Mar 22 at 20:43
Joseph MarieJoseph Marie
1588
In the following code, my dataset is {1,2,3,4}.
With no filter, DTLiffirstrow will return true at "1" and DTLiflastrow will return true at "4".
This is what I expect from these functions.
When I filter the dataset to {2,3},
DTLiffisrtrow returns true at "2". Perfect.
But DTLiflastrow is always false. I would expect it to return true for the value "3".
documentclass{article}
usepackage{datatool}
DTLnewdb{table}
DTLnewrow{table}
DTLnewdbentry{table}{C1}{1}
DTLnewrow{table}
DTLnewdbentry{table}{C1}{2}
DTLnewrow{table}
DTLnewdbentry{table}{C1}{3}
DTLnewrow{table}
DTLnewdbentry{table}{C1}{4}
begin{document}
DTLforeach*%
[DTLisclosedbetween{COne}{2}{3}]%
{table}%
{COne=C1}%
{%
COne%
DTLiffirstrow{FIRST}{}%
DTLiflastrow{LAST}{}%
\%
}%
end{document}
How could I detect the last row of a filtered set of data?
datatool
datatool
asked Mar 22 at 20:43
Joseph MarieJoseph Marie
1588
asked Mar 22 at 20:43
Joseph MarieJoseph Marie
1588
asked Mar 22 at 20:43
Joseph MarieJoseph Marie
1588
asked Mar 22 at 20:43
Joseph MarieJoseph Marie
1588
asked Mar 22 at 20:43
Joseph MarieJoseph Marie
1588
1588
There's no way fordatatoolto know it's on the last filtered row on a single pass. It would require two passes: first to find out which is the last row of the filtered set and the second to compare the current row with that value. (datatoolknows how many rows the database has but the last row may be filtered.DTLiflastrowcan only compare the current row index with the total number of rows.)
– Nicola Talbot
yesterday
add a comment |
There's no way fordatatoolto know it's on the last filtered row on a single pass. It would require two passes: first to find out which is the last row of the filtered set and the second to compare the current row with that value. (datatoolknows how many rows the database has but the last row may be filtered.DTLiflastrowcan only compare the current row index with the total number of rows.)
– Nicola Talbot
yesterday
There's no way for
datatool to know it's on the last filtered row on a single pass. It would require two passes: first to find out which is the last row of the filtered set and the second to compare the current row with that value. (datatool knows how many rows the database has but the last row may be filtered. DTLiflastrow can only compare the current row index with the total number of rows.)– Nicola Talbot
yesterday
There's no way for
datatool to know it's on the last filtered row on a single pass. It would require two passes: first to find out which is the last row of the filtered set and the second to compare the current row with that value. (datatool knows how many rows the database has but the last row may be filtered. DTLiflastrow can only compare the current row index with the total number of rows.)– Nicola Talbot
yesterday
add a comment |
1 Answer
1
active
oldest
votes
This is not a bug, it's a feature !
See the doc (datatool-code.pdf, around page 199):
DTLiflastrow{〈true part 〉}{〈false part 〉}
Checks if the current row is the last row of the database. It doesn’t
take the condition (the optional argument of DTLforeach) into
account, so its possible it may never do 〈true part〉, as the last row
of the database may not meet the condition.
It is therefore not very
useful and is confusing since it behaves differently to DTLiffirstrow
which does take the condition ...
answered yesterday
Joseph MarieJoseph Marie
1588
add a comment |
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1 Answer
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active
oldest
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1 Answer
1
active
oldest
votes
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oldest
votes
active
oldest
votes
This is not a bug, it's a feature !
See the doc (datatool-code.pdf, around page 199):
DTLiflastrow{〈true part 〉}{〈false part 〉}
Checks if the current row is the last row of the database. It doesn’t
take the condition (the optional argument of DTLforeach) into
account, so its possible it may never do 〈true part〉, as the last row
of the database may not meet the condition.
It is therefore not very
useful and is confusing since it behaves differently to DTLiffirstrow
which does take the condition ...
answered yesterday
Joseph MarieJoseph Marie
1588
add a comment |
This is not a bug, it's a feature !
See the doc (datatool-code.pdf, around page 199):
DTLiflastrow{〈true part 〉}{〈false part 〉}
Checks if the current row is the last row of the database. It doesn’t
take the condition (the optional argument of DTLforeach) into
account, so its possible it may never do 〈true part〉, as the last row
of the database may not meet the condition.
It is therefore not very
useful and is confusing since it behaves differently to DTLiffirstrow
which does take the condition ...
answered yesterday
Joseph MarieJoseph Marie
1588
add a comment |
This is not a bug, it's a feature !
See the doc (datatool-code.pdf, around page 199):
DTLiflastrow{〈true part 〉}{〈false part 〉}
Checks if the current row is the last row of the database. It doesn’t
take the condition (the optional argument of DTLforeach) into
account, so its possible it may never do 〈true part〉, as the last row
of the database may not meet the condition.
It is therefore not very
useful and is confusing since it behaves differently to DTLiffirstrow
which does take the condition ...
answered yesterday
Joseph MarieJoseph Marie
1588
This is not a bug, it's a feature !
See the doc (datatool-code.pdf, around page 199):
DTLiflastrow{〈true part 〉}{〈false part 〉}
Checks if the current row is the last row of the database. It doesn’t
take the condition (the optional argument of DTLforeach) into
account, so its possible it may never do 〈true part〉, as the last row
of the database may not meet the condition.
It is therefore not very
useful and is confusing since it behaves differently to DTLiffirstrow
which does take the condition ...
answered yesterday
Joseph MarieJoseph Marie
1588
answered yesterday
Joseph MarieJoseph Marie
1588
answered yesterday
Joseph MarieJoseph Marie
1588
answered yesterday
Joseph MarieJoseph Marie
1588
1588
add a comment |
add a comment |
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There's no way for
datatoolto know it's on the last filtered row on a single pass. It would require two passes: first to find out which is the last row of the filtered set and the second to compare the current row with that value. (datatoolknows how many rows the database has but the last row may be filtered.DTLiflastrowcan only compare the current row index with the total number of rows.)– Nicola Talbot
yesterday