Module util
Returns whether a table includes a certain element.
Functions
| util.table.is (t) | Returns whether or not its argument is a table |
| util.table.map (t, fn) | Applies a function to every element of a table and collects the results in a new table. |
| util.table.for_each (t, fn) | Applies a function to each element of a tabla and throws away the results. |
| is_instance_of (instance, class) | Returns whether an object is an instance of a certain class. |
| util.deco.if_condition (condition) | Given a condition, returns a function that returns either its first argument (if condition is true) or its second argument (if condition is false) |
| util.value.not_nil (value, default) | Checks whether a value is nil and returns a default value if so. |
Functions
- util.table.is (t)
-
Returns whether or not its argument is a table
Parameters:
- t Any value
Returns:
-
boolean
Whether t is a table
- util.table.map (t, fn)
-
Applies a function to every element of a table and collects the results in a new table.
Arguments passed to the function are Value, Key and the Table.
Parameters:
- t table A table of values
- fn function A function to apply to every value
Returns:
-
table
The return values of each call to fn
- util.table.for_each (t, fn)
-
Applies a function to each element of a tabla and throws away the results.
Arguments passed to the function are Value, Key and the Table.
Parameters:
- t table A table of values
- fn function A function to apply to every value
- is_instance_of (instance, class)
-
Returns whether an object is an instance of a certain class.
Parameters:
Returns:
-
boolean
Whether the object is an instance of the class
- util.deco.if_condition (condition)
-
Given a condition, returns a function that returns
either its first argument (if condition is true)
or its second argument (if condition is false)
Parameters:
- condition Any Lua value
Returns:
-
function
One of the two functions described above
- util.value.not_nil (value, default)
-
Checks whether a value is nil and returns a default value if so.
Parameters:
- value Value to check if is nil
- default Value to return if value param is nil
Returns:
-
default if value is nil, value otherwise