Utilities

• Device management
• Module Definition
• POSIX Signal
• Profiler
• Program Options
• HALMD Signal
• Timer Service
• Version Information

Functions on tables

halmd.utility.empty(t)

Test if table is empty.

halmd.utility.keys(t)

Returns table with sorted keys of table t as values.

halmd.utility.sorted(t)

Returns iterator over pairs of table t sorted by key.

halmd.utility.reverse(t)

Returns table with keys as values and values as keys.

Assertions

halmd.utility.assert_kwarg(args, key, level)

Assert keyword argument of table and return its value.

Parameters:

• args (table) – argument table
• key (string) – parameter key
• level (number) – call stack level for error message (default: 2)

Returns:

args[key]

halmd.utility.assert_type(var, name, level)

Assert type of variable.

Parameters:

• var – variable to check
• name (string) – Lua type name
• level (number) – call stack level for error message (default: 2)

Returns:

var