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Posted 20 October 2013 - 04:11 AM
LINQ for Lua
LINQ (Language INtegrated Query) is a framework for processing data from an array and other sources. It uses a fluent style of method calling.
pastebin get RUZ1fbGE linq
API
Spoiler
Generators
- fromArray(collection) – Creates an Enumerable from an array
- fromDictionary(dictionary) – Creates an Enumerable from a dictionary
- fromNil – Creates a blank Enumerable
- fromIterator(iterator) – Creates an Enumerable from an iterator function
- from(auto) – Creates an Enumerable from any of the above
- concat(otherItems) – Concatenates this Enumerable with otherItems
- where(predicate) – Filters this Enumerable using the predicate function
- select(projection) – Converts items in this Enumerable using the projection
- selectMany(projection) – Flattens list of lists by using the projection on each outer item and combining the results
- skip(count) – Skips the number of items and returns the rest
- take(count) – Takes only count number of items
- toIterator() – Returns an iterator suitable for use in a for loop
- toArray() – Returns the Enumerable as an array
- dump() – Prints each item in the Enumerable
Examples
Spoiler
e = linq.from({1, 2, 3, 4, 5})
q = e:where(function(v) return v % 2 == 0 end)
q:dump()
-- Returns:
-- 2
-- 4
e:select(function(v) return v * 3 end):dump()
-- Returns:
-- 3
-- 6
-- 9
-- 12
-- 15
e:take(2):dump()
-- Returns:
-- 1
-- 2
for i in e:take(2):toIterator() do
print(i)
end
-- Equivalent to previous statement
e:skip(2):dump()
-- Returns:
-- 3
-- 4
-- 5
The code is available on GitHub.
