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Because Template:If must prepare the parameters for #if, #ifeq, #ifexpr, (etc.) there is a slight overhead when using it. Each nested use adds 5 levels to the template expansion depth, so 7 nested if-templates would use 35 levels (5*7) of the 41-level limit.
Templates used for "if-then-else" (i.e. conditional) types of queries within Wikipedia code. Take care! These templates can be tricky to manipulate and can produce unexpected results, especially if their use is introduced or amended without testing.
See also: the {{}} template. The #if function selects one of two alternatives based on the truth value of a test string. {{#if: test string | value if true | value if false}} As explained above, a string is considered true if it contains at least one non-whitespace character.
Because Template:If must prepare the parameters for #if, #ifeq, #ifexpr, (etc.) there is a slight overhead when using it. Each nested use adds 5 levels to the template expansion depth, so 7 nested if-templates would use 35 levels (5*7) of the 41-level limit.
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.
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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.