23 lines
565 B
Markdown
23 lines
565 B
Markdown
Override a Built-in Function
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===========================
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{{#include ../links.md}}
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Any similarly-named function defined in a script _overrides_ any built-in or registered
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native Rust function of the same name and number of parameters.
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```rust
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// Override the built-in function 'to_float' when called as a method
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fn to_float() {
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print("Ha! Gotcha! " + this);
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42.0
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}
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let x = 123.to_float();
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print(x); // what happens?
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```
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A registered native Rust function, in turn, overrides any built-in function of the
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same name, number and types of parameters.
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