What command should I use to be warned of this collision beforehand?
up vote
2
down vote
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After a hunt through several subfiles, I've narrowed down what I thought was a bug down to this MWE
documentclass{article}
usepackage{amsmath, amssymb}
newcommand{R}{mathbb{R}}
begin{document}
$R$
newdimenR
R=.4cm
$R$
end{document}
Clearly user error. Although this is what I get for copy and pasting code without paying too close attention to the variables they use. What commands should I use to be warned of this collision in compiling instead of getting the error ! Missing number... and having to scour several files for what this could be?
I feel like this is along the lines of def versus newcommand.
tex-core
asked 13 mins ago
Robert Wolfe
1109
add a comment |
up vote
2
down vote
favorite
After a hunt through several subfiles, I've narrowed down what I thought was a bug down to this MWE
documentclass{article}
usepackage{amsmath, amssymb}
newcommand{R}{mathbb{R}}
begin{document}
$R$
newdimenR
R=.4cm
$R$
end{document}
Clearly user error. Although this is what I get for copy and pasting code without paying too close attention to the variables they use. What commands should I use to be warned of this collision in compiling instead of getting the error ! Missing number... and having to scour several files for what this could be?
I feel like this is along the lines of def versus newcommand.
tex-core
asked 13 mins ago
Robert Wolfe
1109
add a comment |
up vote
2
down vote
favorite
up vote
2
down vote
favorite
After a hunt through several subfiles, I've narrowed down what I thought was a bug down to this MWE
documentclass{article}
usepackage{amsmath, amssymb}
newcommand{R}{mathbb{R}}
begin{document}
$R$
newdimenR
R=.4cm
$R$
end{document}
Clearly user error. Although this is what I get for copy and pasting code without paying too close attention to the variables they use. What commands should I use to be warned of this collision in compiling instead of getting the error ! Missing number... and having to scour several files for what this could be?
I feel like this is along the lines of def versus newcommand.
tex-core
asked 13 mins ago
Robert Wolfe
1109
After a hunt through several subfiles, I've narrowed down what I thought was a bug down to this MWE
documentclass{article}
usepackage{amsmath, amssymb}
newcommand{R}{mathbb{R}}
begin{document}
$R$
newdimenR
R=.4cm
$R$
end{document}
Clearly user error. Although this is what I get for copy and pasting code without paying too close attention to the variables they use. What commands should I use to be warned of this collision in compiling instead of getting the error ! Missing number... and having to scour several files for what this could be?
I feel like this is along the lines of def versus newcommand.
tex-core
tex-core
asked 13 mins ago
Robert Wolfe
1109
asked 13 mins ago
Robert Wolfe
1109
asked 13 mins ago
Robert Wolfe
1109
asked 13 mins ago
Robert Wolfe
1109
asked 13 mins ago
Robert Wolfe
1109
1109
add a comment |
add a comment |
1 Answer
1
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up vote
0
down vote
You can create a wrapper around newdimen that gives you an error in that case.
documentclass{article}
usepackage{etoolbox}
usepackage{amsmath, amssymb}
newcommand{R}{mathbb{R}}
newcommand{newdimension}[1]{%
ifundef{#1}
{newdimen#1}
{errmessage{command expandafterstring#1 already defined - can't create dimension}}}
begin{document}
$R$
newdimension{R}
R=.4cm
$R$
newdimension{mydim}
mydim=.4cm
showthemydim
end{document}
answered 22 secs ago
AndiW
223111
add a comment |
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1 Answer
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active
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
0
down vote
You can create a wrapper around newdimen that gives you an error in that case.
documentclass{article}
usepackage{etoolbox}
usepackage{amsmath, amssymb}
newcommand{R}{mathbb{R}}
newcommand{newdimension}[1]{%
ifundef{#1}
{newdimen#1}
{errmessage{command expandafterstring#1 already defined - can't create dimension}}}
begin{document}
$R$
newdimension{R}
R=.4cm
$R$
newdimension{mydim}
mydim=.4cm
showthemydim
end{document}
answered 22 secs ago
AndiW
223111
add a comment |
up vote
0
down vote
You can create a wrapper around newdimen that gives you an error in that case.
documentclass{article}
usepackage{etoolbox}
usepackage{amsmath, amssymb}
newcommand{R}{mathbb{R}}
newcommand{newdimension}[1]{%
ifundef{#1}
{newdimen#1}
{errmessage{command expandafterstring#1 already defined - can't create dimension}}}
begin{document}
$R$
newdimension{R}
R=.4cm
$R$
newdimension{mydim}
mydim=.4cm
showthemydim
end{document}
answered 22 secs ago
AndiW
223111
add a comment |
up vote
0
down vote
up vote
0
down vote
You can create a wrapper around newdimen that gives you an error in that case.
documentclass{article}
usepackage{etoolbox}
usepackage{amsmath, amssymb}
newcommand{R}{mathbb{R}}
newcommand{newdimension}[1]{%
ifundef{#1}
{newdimen#1}
{errmessage{command expandafterstring#1 already defined - can't create dimension}}}
begin{document}
$R$
newdimension{R}
R=.4cm
$R$
newdimension{mydim}
mydim=.4cm
showthemydim
end{document}
answered 22 secs ago
AndiW
223111
You can create a wrapper around newdimen that gives you an error in that case.
documentclass{article}
usepackage{etoolbox}
usepackage{amsmath, amssymb}
newcommand{R}{mathbb{R}}
newcommand{newdimension}[1]{%
ifundef{#1}
{newdimen#1}
{errmessage{command expandafterstring#1 already defined - can't create dimension}}}
begin{document}
$R$
newdimension{R}
R=.4cm
$R$
newdimension{mydim}
mydim=.4cm
showthemydim
end{document}
answered 22 secs ago
AndiW
223111
answered 22 secs ago
AndiW
223111
answered 22 secs ago
AndiW
223111
answered 22 secs ago
AndiW
223111
223111
add a comment |
add a comment |
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