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In such case it is always possible to use a function call, but this can be cumbersome and inelegant. For example, to pass conditionally different values as an argument for a constructor of a field or a base class, it is impossible to use a plain if-else statement; in this case we can use a conditional assignment expression, or a function call ...
For each case, either side of the equals sign "=" can be a simple string, a call to a parser function (including #expr to evaulate expressions), or a template call. If any cases are not associated with a value (i.e., no equals sign is used), the next specified value will be used.
If-then-else flow diagram A nested if–then–else flow diagram. In computer science, conditionals (that is, conditional statements, conditional expressions and conditional constructs) are programming language constructs that perform different computations or actions or return different values depending on the value of a Boolean expression, called a condition.
This illustrates an alternative method of specifying the default case, which can appear first, last, or anywhere in between. If no default is specified and no case matches the supplied value, a null value is returned. For each branch of a #switch, either side of an equals-sign "=" can be a simple value, an expression, or a template call.
This template is used on approximately 6,900 pages and changes may be widely noticed. Test changes in the template's /sandbox or /testcases subpages, or in your own user subpage . Consider discussing changes on the talk page before implementing them.
In this example, because someCondition is true, this program prints "1" to the screen. Use the ?: operator instead of an if-then-else statement if it makes your code more readable; for example, when the expressions are compact and without side-effects (such as assignments).
[[Category:If-then-else templates]] to the <includeonly> section at the bottom of that page. Otherwise, add <noinclude>[[Category:If-then-else templates]]</noinclude> to the end of the template code, making sure it starts on the same line as the code's last character.
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