Scilab Bag Of Tricks - Claymore

a =
1.
->bar(3.5)
ans =
2.
->bar(-1)
ans =
2.
->a = 2
a =
2.
->bar(-1)
ans =
3.
Now what is the “enclosing scope”? It is the call stack, Scilab scopes dynamically!
Example 2-5. Dynamic Scoping
// scoping in Scilab
deff(’first_local()’, ’x = ""foo"", second()’);
deff(’first()’, ’second()’);
deff(’second()’, ’disp(x)’);
x = 1;
first_local() // prints ’foo’
first() // prints 1
Chapter 2. Pitfalls
Example 2-5 deserves a close look. Dynamic scoping can be confusing for people used to e.g. C’s
lexically scoped auto variables.
/* lexical scoping in C */
void first_local(void);
void first(void);
void second(void);
int x = 1;
int
main(void)
{
first_local(); /* prints 1 */
first(); /* prints 1 */
return 0;
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