Associative array/Creation: Difference between revisions
Add Ecstasy example
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(Add Ecstasy example) |
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</syntaxhighlight>
=={{header|Ecstasy}}==
Defining the Map:
<syntaxhighlight lang="java">Map<String, Int> map = new HashMap();
map["foo"] = 5; // or: map.put("foo", 5)
map["bar"] = 10;
map["baz"] = 15;
map["foo"] = 6; // replaces previous value of 5</syntaxhighlight>
Literal map notation:
<syntaxhighlight lang="java">Map<String, Int> map = ["foo"=6, "bar"=10, "baz"=15];</syntaxhighlight>
Retrieving a value:
<syntaxhighlight lang="java">Int? mightBeNull = map["foo"];
Int neverNull = map.getOrDefault("foo", 0);
if (Int n := map.get("foo"))
{
// if "foo" is in the map, then the variable "n" is set to its value
}
else
{
// if "foo" is not in the map, then the variable "n" is not defined
}</syntaxhighlight>
Iterate over keys:
<syntaxhighlight lang="java">for (String key : map)
{
// the variable "key" is defined here
}</syntaxhighlight>
Iterate over values:
<syntaxhighlight lang="java">for (Int value : map.values)
{
// the variable "value" is defined here
}</syntaxhighlight>
Iterate over key, value pairs:
<syntaxhighlight lang="java">for ((String s, Int i) : map)
{
// the variables "key" and "value" are defined here
}</syntaxhighlight>
=={{header|Elena}}==
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