Linked Questions

94
votes
4answers
34k views

LaTeX conditional expression

I would like to be able to set a flag at the beginning of the main flag (say output) that tells if I want to produce a paper document or an electronic document. Then I should check this flag to ...
64
votes
6answers
3k views

How to keep up with packages and know which ones are obsolete?

I'm an on and off user of LaTeX so I'm not familiar with every package out there. Having said that, whenever I use LaTeX and need to accomplish a certain goal (i.e. generate a list of appendices), I ...
29
votes
7answers
6k views

Conditional typesetting / build

Let's say I have .tex file which is a set of problems and solutions, of which I want to make two pdf files, one which includes the solutions and one which doesn't. so I need to build the .tex file ...
11
votes
4answers
1k views

Does LaTeX have a built-in scripting language?

Say I want to draw a simple graph in LaTeX. I'm interested to know if you can write a for loop or something to create things like lines or squares programmatically in LaTeX.
11
votes
4answers
1k views

How to make a “condition” in a macro?

I would like to make a macro with two parameters which return a text. For instance, I want \M{1}{5} to return [1,5], and \M{2}{2} to return [2] (because the two arguments are the same). So I need to ...
13
votes
3answers
423 views

Making a “For Loop”

I am trying to make a "for loop" that will iterate the variable reaches 1. However, none of the "for loops" I have found in the Internet works. These files will be distributed to other people and ...
7
votes
4answers
776 views

Logical String Length

How do I do a conditional 'if then else' statement, based on length of string being greater than (or less than, or equal) a specified value. For example, something Like \def\mystring{XYZ} ...
7
votes
4answers
1k views

Undefined control sequence \equal in section title while using packages hyperref and ifthen

I have a command that uses package ifthen. I use the command in section titles. I have to protect the command because otherwise I obtained the error Undefined control sequence \equal. So far, so ...
6
votes
2answers
1k views

Expand away empty macros within ifthenelse

I want to test whether a string, when it is finally printed, is empty. The following illustrates my problem, \documentclass{article} \usepackage{ifthen} \newcommand{\isempty}[1]% { ...
6
votes
2answers
150 views

Is “conditionals” name of package?

In some package I have seen construct like this one: \if\blank{\myMacro}% %do something \else %do something else \fi I like it and I want to use it to test if call to a macro has empty result. ...
1
vote
3answers
1k views

Using predefined constants with TikZ

I can't seem to get definitions of constants working in TikZ. I looked at this related question question and that too did not work for me. This example works, but not if the swap the \coordinate ...
4
votes
1answer
539 views

Algorithmicx — How to use latex maths delimiters

Today, I decided to migrate from using TeX [$..$] to LaTeX [\(..\)] delimiters for inline maths, and, as usual, fell off the cliff of my somewhat precarious understanding of TeXian gastroenterology, ...
6
votes
2answers
133 views

Use of a macro to set counter value in another macro

I am trying to simply set the value of the counter try which I defined previously to the value of the output of the \foo command. However this does not work. I guess that the problem is coming from ...
5
votes
3answers
275 views

Correct way of test blank element in array

I'm trying to test whether an element in a defined list (array) is "empty." I tried using the \empty macro, or putting white spaces inside the quote, but nothing seems to work. I'm testing the ...
8
votes
2answers
76 views

Check equality between colors

Consider the following: \colorlet{mycolour1}{black} AND \colorlet{mycolour2}{black} How do I use a command like \ifthenelse{\equal{mycolour1}{mycolour2}}{TRUE}{FALSE} In other words, how can I ...

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