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Howto:Start using vectors and hashes in Nasal: Difference between revisions
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Howto:Start using vectors and hashes in Nasal (view source)
Revision as of 10:59, 4 June 2014
, 4 June 2014→A generic constructor
m (→A hash based version (recommended): remove untested brain fart ... as per: http://forum.flightgear.org/viewtopic.php?f=71&t=23204&p=211657#p211638) |
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Sometimes, you'll work with classes that do not have any custom constructor functions - but you can easily create a generic constructor, too: | Sometimes, you'll work with classes that do not have any custom constructor functions - but you can easily create a generic constructor, too: | ||
<syntaxhighlight lang="php"> | |||
var new = func(obj) { | |||
return {parents:obj}; | |||
} | |||
</syntaxhighlight> | |||
As long as '''obj''' is a vector of hashes, it can be simply invoked like this: | |||
<syntaxhighlight lang="php"> | |||
var p = new( Position3D ); | |||
</syntaxhighlight> | |||
Now, once you remember that Nasal implicitly has an '''arg''' vector for its arguments, the whole thing can be simplified like this: | |||
<syntaxhighlight lang="php"> | <syntaxhighlight lang="php"> | ||