Shulou(Shulou.com)06/02 Report--

Declare [+ / -] option variable name

-: set type properties for variables

+: cancel the type attribute of a variable

-a: declare variables as arrays

-I: declare variables as integers

-x: declare a variable as an environment variable

-r: declare a variable as read-only

-p: displays the declared type of the specified variable

Declare-p queries the attributes of all variables

Declare-p variable name query the properties of the specified variable

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