StendhalScripting/Lua: Difference between revisions
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imported>AntumDeluge →Stendhal Application: update for changes to Lua engine |
imported>AntumDeluge →Tables: accessing table values |
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''(<span style="color:red;">IMPORTANT NOTE: Lua table indexes begin at 1, not 0</span>)''
==== Creating Tables ====
An empty table is initialized with a pair of curly braces (<code>{}</code>):
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<pre>
-- create a table with values
local mytable = {"foo"}
-- add value
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To create a key=value table, any of the following methods can be used to add values:
<pre>
-- all of these do the same thing, that is, assigning "bar" to mytable.foo
local mytable {
foo = "bar",
["foo"] = "bar",
}
mytable.foo = "bar"
mytable["foo"] = "bar"
</pre>
==== Accessing Table Values ====
Square brackets (<code>[]</code>) enclosing an index number are used to access values in indexed tables (''remember that Lua table indexes start at "1" not "0"''):
<pre>
local mytable = {"foo", "bar"}
print(mytable[1]) -- prints "foo"
print(mytable[2]) -- prints "bar"
</pre>
In a key=value table, values can be accessed by either enclosing the key string in square brackets or concatenating the key member using a <code>.</code>:
<pre>
local mytable = {foo="bar"}
-- using square brackets
print(mytable["foo"]) -- prints "bar"
-- using concatenated member
print(mytable.foo) -- prints "bar"
</pre>
==== Iterating Tables ====
Tables can be iterated in a
<pre>
local mytable = {"foo", "bar"}
print("indexes:")
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