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if

Executes the block if the expression is truthy.

Syntax

if EXPR

假值包括 false0、任何 nil 指針或接口值、任何長度為零的數組、切片、映射或字符串,以及零值 time.Time

其他所有值都是真值。

{{ $var := "foo" }}
{{ if $var }}
  {{ $var }} → foo
{{ end }}

Use with the else statement:

{{ $var := "foo" }}
{{ if $var }}
  {{ $var }} → foo
{{ else }}
  {{ print "var is falsy" }}
{{ end }}

Use else if to check multiple conditions:

{{ $var := 12 }}
{{ if eq $var 6 }}
  {{ print "var is 6" }}
{{ else if eq $var 7 }}
  {{ print "var is 7" }}
{{ else if eq $var 42 }}
  {{ print "var is 42" }}
{{ else }}
  {{ print "var is something else" }}
{{ end }}

有關更多信息,請參閱 Go 的 text/template 文檔。


Last updated: January 1, 0001
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