duplicated block id: 1
size: 7 cleaned lines of code
in 4 files:
 - rust/ccommon-rs/src/option/boolean.rs (72:80)
 - rust/ccommon-rs/src/option/fpn.rs (72:80)
 - rust/ccommon-rs/src/option/uint.rs (72:80)
 - rust/ccommon-rs/src/option/string.rs (94:102)