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The Science of Programming/SwayPresentations/Objects/Examples4
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Examples
How about try blocks? Using the Sway proximal block style:
var error;
try (error)
{
a / b;
}
else if (error . type == :undefinedVariable)
{
println("try block has an undefined variable");
}
else
{
println("try block has a divide error");
}
Here's the implementation:
function try($store,$code,$)
{
var result = catch(force($code));
if (error?(result))
{
$store = result;
if ($ != :null,force(car($)));
}
else
{
result;
}
}
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