| finally |
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grammar |
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A
finally
statement asks the Yoix interpreter to execute some code right
before the current block ends.
Its usage description can be summarized as follows:
Statement:
finally Compound
The Yoix implementation of
finally,
unlike the Java version, is not tied to
try
and there are no restrictions on the number of
finally
statements in any block - the last one executed by the
interpreter is the only one that gets kicked off when the block ends.
In other words, the interpreter has to reach and execute the finally statement
before you can be sure it will get kicked off at the end of a block;
just because you can see a finally statement somewhere inside a block doesn't
mean anything special will happen when the block ends.
When a block is about to end, the Yoix interpreter executes the code
associated with the last finally statement that it encountered in the block
and then it restores saved variables in the opposite order that they were saved.
Even though
finally
can restore variables,
save
is more efficient and is the only way to reset access permissions.
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| Example: |
The program
import yoix.stdio.*;
int n = -100;
{
int n = 100;
finally {
printf("this will not execute\n");
}
n++;
finally {
printf("local n=%d\n", n);
}
n++;
}
n--;
finally {
printf("global n=%d\n", n);
}
n--;
prints
local n=102
global n=-102
on standard output.
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| See Also: |
reference,
save
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