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D / Templates

variadic templates

Learn variadic templates in D with a construct-specific explanation, unique example, engineering boundary, and mastery check.

10 min read • Intermediate

variadic templates is a focused D topic inside Templates. This lesson explains the construct itself, the state or value it operates on, and the observable result it produces.

Read the example as a small executable experiment. Identify the exact syntax that belongs to variadic templates, then change one input and predict the result before running it.

Topic-specific example

d-04-06-variadic-templates.d
d Try It Live 
auto countArgs(T...)(T args){ return T.length; }
Edge case / engineering note

variadic templates has rules that are easy to miss when the example is copied mechanically. Check the feature-specific boundary shown by this construct: scope, mutability, evaluation order, type constraints, lifetime, error behavior, compile-time restrictions, or resource cleanup where applicable.

Content source & attribution
Original Syntaxis Content · Original Syntaxis Content

Lesson quizzes

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