Library tableaux
Auxiliary functions for table manipulation
Author:
Copyright © Same as Nmap--See https://nmap.org/book/man-legal.html
Source: https://svn.nmap.org/nmap/nselib/tableaux.lua
Functions
- contains (t, item, array)
Check for the presence of a value in a table
- invert (t)
Invert a one-to-one mapping
- keys (t)
Returns the keys of a table as an array
- shallow_tcopy (t)
Copy one level of a table.
- tcopy (t)
Recursively copy a table.
Functions
- contains (t, item, array)
-
Check for the presence of a value in a table
Parameters
- t
- the table to search into
- item
- the searched value
- array
- (optional) If true, then use ipairs to only search the array indices of the table.
Return values:
- Boolean true if the item was found, false if not
- The index or key where the value was found, or nil
- invert (t)
-
Invert a one-to-one mapping
Parameters
- t
- the table to invert
Return value:
an inverted mapping - keys (t)
-
Returns the keys of a table as an array
Parameters
- t
- The table
Return value:
A table of keys - shallow_tcopy (t)
-
Copy one level of a table.
Iterates over the keys of a table and copies their values into a new table. If any values are tables, they are copied by reference only, and modifying the copy will modify the original table value as well.
Parameters
- t
- the table to copy
Return value:
a shallow copy of the table - tcopy (t)
-
Recursively copy a table.
Uses simple assignment to copy keys and values from a table, recursing into subtables as necessary.
Parameters
- t
- the table to copy
Return value:
a deep copy of the table