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Feb
10
comment How should I parse an ISO date in expl3?
@Manuel Probably so; here I added a validation step that allows to be sure about scanning the given date with delimited parameters.
Feb
10
comment How should I parse an ISO date in expl3?
@JosephWright I added a validation with a regular expression, which in this case seems the best tool.
Feb
10
revised How should I parse an ISO date in expl3?
Version with validation of the date
Feb
10
answered How should I parse an ISO date in expl3?
Feb
10
comment Size of a vertical bar symbol
You need amsmath for \lvert. But recall that amsmath redefines \big.
Feb
10
awarded  Enlightened
Feb
10
reviewed Leave Closed How can I prevent spaces in file names from causing the file name from appearing in the output when using graphicx?
Feb
10
revised Size of a vertical bar symbol
Good version
Feb
10
awarded  Nice Answer
Feb
10
comment Size of a vertical bar symbol
@yarchik No, it doesn't really work; I'm working on it.
Feb
10
comment Size of a vertical bar symbol
Never ever use eqnarray.
Feb
10
answered Size of a vertical bar symbol
Feb
10
comment Remove section titles from text, but not table of contents — interaction with columns
@AndrewJaffe From what I saw, this is a problem of timing with respect to the annotation made by \addcontentsline in the .aux file. The note is written only at shipout time, probably the switches make the note to be written at the wrong time. And, no, switching between one and two column should not be done in this way.
Feb
10
answered Importing text file into Latex by character
Feb
10
revised equation: what are the problems?
Simpler approach
Feb
10
answered equation: what are the problems?
Feb
10
comment Remove section titles from text, but not table of contents — interaction with columns
No, I won't. This switching between one and two columns is wrong to begin with. You probably want to use the multicol package.
Feb
10
comment Remove section titles from text, but not table of contents — interaction with columns
Please, make a sensible example: \onecolumn immediately followed by \twocolumn means nothing.
Feb
10
comment equation: what are the problems?
As said in the answer to your previous question, \stackrel{\mathclap}{\rightarrow} makes no sense and produces lots of errors. What should that construction produce in your intentions?
Feb
10
comment mathclap: undefined control sequence
I'm not sure what you want to accomplish with \stackrel{\mathclap}{\rightarrow}; you probably want something like \xrightarrow{f} to have a label over an (extensible) arrow.