Math & Logic Functions
Functions for calculations and logical operations.
Math Functions
add
Returns the sum of two integers.
go
{{ add 2 3 }} // Output: 5
{{ add .Count 1 }}sub
Returns the difference of two integers.
go
{{ sub 5 2 }} // Output: 3
{{ sub .Total .Used }}Logic Functions
and
Logical AND of two booleans.
go
{{ and true false }} // Output: false
{{ if and .IsPublished .IsFeatured }}
<span>Featured</span>
{{ end }}or
Logical OR of two booleans.
go
{{ or true false }} // Output: true
{{ if or .IsDraft .IsPrivate }}
<span>Not Public</span>
{{ end }}eq
Checks equality.
go
{{ eq .Type "post" }}
{{ if eq .Status "published" }}
<span>Live</span>
{{ end }}ne
Checks inequality.
go
{{ ne .A .B }}
{{ if ne .Type "page" }}
<time>{{ .Date }}</time>
{{ end }}default
Returns the second argument if non-empty, otherwise the first.
go
{{ default "N/A" .Value }}
{{ default "Untitled" .Title }}Examples
Pagination Math
go
{{ $totalPages := add (sub .TotalItems 1) .ItemsPerPage | div .ItemsPerPage }}
{{ $nextPage := add .CurrentPage 1 }}
{{ $prevPage := sub .CurrentPage 1 }}Conditional Rendering
go
{{ if and (eq .Type "post") (ne .Status "draft") }}
<article>{{ .Content }}</article>
{{ end }}