EPScript/Operators: Difference between revisions
Tidied up logical operators section |
Tidied up comparison operators section |
||
| Line 32: | Line 32: | ||
===lt=== | ===lt=== | ||
Returns true if the left-hand expression is less than the right-hand expression. This is only applicable to expressions that return numeric values. | Returns true if the left-hand expression is less than the right-hand expression. This is only applicable to expressions that return numeric values. | ||
{{codesample|<pre> | |||
{{codesample| | <if test="length(editors) lt 6"> | ||
<pre> | ... | ||
<if test="length(editors) lt 6"> | </if> | ||
... | </pre>}} | ||
</if> | |||
</pre> | |||
}} | |||
===gt=== | ===gt=== | ||
Returns true if the left-hand expression is greater than the right-hand expression. This is only applicable to expressions that return numeric values. | Returns true if the left-hand expression is greater than the right-hand expression. This is only applicable to expressions that return numeric values. | ||
{{codesample|<pre> | |||
{{codesample| | <if test="length(editors) gt 1"> | ||
<pre> | ... | ||
<if test="length(editors) gt 1"> | </if> | ||
... | </pre>}} | ||
</if> | |||
</pre> | |||
}} | |||
===equals=== | ===equals=== | ||
Returns true if the left-hand expression is equal to the right-hand expression. This applies to numeric, boolean, and string values. | Returns true if the left-hand expression is equal to the right-hand expression. This applies to numeric, boolean, and string values. | ||
{{codesample|<pre> | |||
{{codesample| | <if test="type = 'patent'"> | ||
<pre> | ... | ||
<if test="type = 'patent'"> | </if> | ||
... | </pre>}} | ||
</if> | |||
</pre> | |||
}} | |||
===not equals=== | ===not equals=== | ||
The inverse of the equals operator, this returns true if the expressions are not equal. | The inverse of the equals operator, this returns true if the expressions are not equal. | ||
{{codesample|<pre> | |||
{{codesample| | <if test="type != 'book'"> | ||
<pre> | ... | ||
<if test="type != 'book'"> | </if> | ||
... | </pre>}} | ||
</if> | |||
</pre> | |||
}} | |||
Revision as of 15:44, 20 February 2022
| EPScript | ||
Operators
Logical Operators
and
Returns true if both the left-hand and the right-hand expressions return true.
<if test="type = 'book' and is_set( creators )"> ... </if>
or
Returns true if at least one of the expressions returns true.
<if test="type = 'book' or type = 'patent'"> ... </if>
not
Returns true if the expression is false and false if the expression is true.
<if test="!is_set( creators )"> ... </if>
Comparison Operators
lt
Returns true if the left-hand expression is less than the right-hand expression. This is only applicable to expressions that return numeric values.
<if test="length(editors) lt 6"> ... </if>
gt
Returns true if the left-hand expression is greater than the right-hand expression. This is only applicable to expressions that return numeric values.
<if test="length(editors) gt 1"> ... </if>
equals
Returns true if the left-hand expression is equal to the right-hand expression. This applies to numeric, boolean, and string values.
<if test="type = 'patent'"> ... </if>
not equals
The inverse of the equals operator, this returns true if the expressions are not equal.
<if test="type != 'book'"> ... </if>