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Kovid Goyal 2021-03-06 19:54:17 +05:30
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manual/template_lang.rst
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@ -325,7 +325,7 @@ Note: the last line in the template, ``new_tags``, isn't strictly necessary in t
Relational operators return '1' if they evaluate to True, otherwise the empty string (''). Relational operators return '1' if they evaluate to True, otherwise the empty string ('').
There are two forms of relational operators: string comparisons and numeric comparisons. They string comparisons do case-insensitive string comparison using lexical order. The supported string comparison operators are ``==``, ``!=``, ``<``, ``<=``, ``>``, ``>=``, and ``in``. There are two forms of relational operators: string comparisons and numeric comparisons. The string comparisons do case-insensitive string comparison using lexical order. The supported string comparison operators are ``==``, ``!=``, ``<``, ``<=``, ``>``, ``>=``, and ``in``.
For the ``in`` operator, the result of the left hand expression is interpreted as a regular expression pattern. The ``in`` operator is True if the pattern matches the result of the right hand expression. The match is case-insensitive. For the ``in`` operator, the result of the left hand expression is interpreted as a regular expression pattern. The ``in`` operator is True if the pattern matches the result of the right hand expression. The match is case-insensitive.
The numeric comparison operators are ``==#``, ``!=#``, ``<#``, ``<=#``, ``>#``, ``>=#``. The left and right expressions must evaluate to numeric values with two exceptions: the string value "None" (undefined field) and the empty string evaluate to the value zero. The numeric comparison operators are ``==#``, ``!=#``, ``<#``, ``<=#``, ``>#``, ``>=#``. The left and right expressions must evaluate to numeric values with two exceptions: the string value "None" (undefined field) and the empty string evaluate to the value zero.