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MathType
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Wiris Quizzes
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Learning Lemur
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CalcMe
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MathPlayer
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Store FAQ
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VPAT for the electronic documentation
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MathFlow
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BF FAQ
Substring
Reading time: 1minFinds a string in a larger string.
Syntax
substring(String, List, Integer)
substring(String, List)
Description
Given a string s, a list of strings {s1,...,sk}, and a positive integer n, searches si in s starting from the (n+1)-th char. If more than one sj appears in the original string, only the first appearance is returned. If the find ends with no matches, failed is returned. The output is a list with two elements: an integer with the position of the string and the string si.
Given a string s and a list of strings {s1,...,sk}, searches si in s. If more than one sj appears in the original string, only the first appearance is returned. If the find ends with no matches, failed is returned. The output is a list with two elements: an integer with the position of the string and the string si.
Nota
The math content is converted to MathML inside the corresponding string if there is a special character or any mathematical expression in the string. For instance, if the kernel receives s = "2 <math><mo>.</mo></math> 17", the substring function won't return the expected value. In this case, you need to include the string previously through the code editor.