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19 lines
544 B
Plaintext
19 lines
544 B
Plaintext
// Functions input in leo are pass-by-value.
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//
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// Program execution:
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// line 15: variable `a` is defined with value `1`.
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// line 16: value `1` is copied and passed into function `bad_mutate()`.
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// line 10: variable `x` is defined with value `1`.
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// line 11: variable `x` is set to value `0`.
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// line 18: program returns the value of `a`.
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function bad_mutate(mut x: u32) {
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x = 0; // <- does not change `a`
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}
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function main() {
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let a = 1u32;
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bad_mutate(a);
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console.assert(a == 1u32); // <- value `a` is still `1u32`
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} |