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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.
An inline source code string. Template parameters [Edit template data] This template prefers inline formatting of parameters. Parameter Description Type Status Code 1 code The code to display. String required Language 2 lang The programming language of the source code. List of valid values is at: [[mw:Extension:SyntaxHighlight#Supported_languages]] Default text String suggested Class class no ...
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.
This helper template is designed to be used in other templates. It can help editors create template code that is more self documenting. A major advantage of using this template over using the construct {{#if:{{{1|}}}{{{2|}}} |…}} is that if the first parameter is not empty then the second parameter is not evaluated.
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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