Returns a list with the first lines of a file. The number of lines should be indicated in the attribute lines.

1 file.head

<file.head lines='lines'>
    <file /> !
</file.head>

Attributes
Name	Type	Required	Default	Description
Alines	number				Number of lines which must be obtained from the beginnning of the file including the first line.

Arguments
Name	Type	Required	Unique	Nullable	Description
Efile	file

Returns
Type	Description
Array	An array with the first n lines of the file.

Example

get the first 10 lines of a file.

Copy

<xsql-script name='file_head_sample1'>
    <body>
        <set name='m_srcfile'>
            <string>c:<file.separator />source<file.separator />deister.txt</string>
        </set>
        <println>

        <set name='arr'>
            <file.head lines='10'>
                <file  name='#m_srcfile' type='absolute' />
            </file.head>
        </set>

        <println>
            <arr/>
        </println>

        <iterator name='line' index='idx'>
            <in>
                <arr/>
            </in>
            <do>
                <println><idx/>: <line /></println>
            </do>
        </iterator>

        <println>
    </body>
</xsql-script>