Check if a key is registered in the map.

1 map.containsKey

<map.containsKey name='name'>
    <clave /> !
</map.containsKey>

Attributes
Name	Type	Required	Default	Description
Aname	string				Name of the map.

Arguments
Name	Type	Required	Unique	Nullable	Description
Eclave

Example

Check if the key 1 exist in the map.

Copy

<xsql-script name='map_contains_key'>
    <body>
        <map name='a'>
            <item>0<string>ZERO</string></item>
            <item>1<string>ONE</string></item>
            <item>2<string>TWO</string></item>
            <item>3<string>THREE</string></item>
            <item>4<string>FOUR</string></item>
        </map>

        <println>
            <map.containsKey name='a'>
                <number>1</number>
            </map.containsKey>
        </println>
    </body>
</xsql-script>