pkg_.contains(P;K)
Returns a boolean indicating whether package P
contains key
K
(a string).
Description
pkg_.contains
is a user-defined function (defined with
<def_ufun/>
). If you are not running your query in GUI2,
pkg_.contains
will only work if you import the
pkg_
library: <import
path="default.library.types.pkg_"/>
.
Syntax
pkg_.contains(P;K)
Input
Argument | Type | Description |
---|---|---|
P |
any | The name of a package variable |
K |
any | The name of a key |
Return Value
If packageP
contains key K
, pkg_.contains
returns a boolean value
of 1
(true). Otherwise, it returns 0
.Example
<set x="{pkg('key1' 'key2';'val1' 'val2')}"/> <signal msg="{pkg_.contains(@x;'key1')}"/>
In the example above, the package x
contains the key
'key1'
, so pkg_.contains
returns a boolean
value of 1
(true).