rust/tests/ui/format_collect.stderr

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error: use of `format!` to build up a string from an iterator
--> $DIR/format_collect.rs:5:5
|
LL | bytes.iter().map(|b| format!("{b:02X}")).collect()
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
help: call `fold` instead
--> $DIR/format_collect.rs:5:18
|
LL | bytes.iter().map(|b| format!("{b:02X}")).collect()
| ^^^
help: ... and use the `write!` macro here
--> $DIR/format_collect.rs:5:26
|
LL | bytes.iter().map(|b| format!("{b:02X}")).collect()
| ^^^^^^^^^^^^^^^^^^
= note: this can be written more efficiently by appending to a `String` directly
= note: `-D clippy::format-collect` implied by `-D warnings`
error: use of `format!` to build up a string from an iterator
--> $DIR/format_collect.rs:10:5
|
LL | bytes.iter().map(|b| {{{{{ format!("{b:02X}") }}}}}).collect()
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
help: call `fold` instead
--> $DIR/format_collect.rs:10:18
|
LL | bytes.iter().map(|b| {{{{{ format!("{b:02X}") }}}}}).collect()
| ^^^
help: ... and use the `write!` macro here
--> $DIR/format_collect.rs:10:32
|
LL | bytes.iter().map(|b| {{{{{ format!("{b:02X}") }}}}}).collect()
| ^^^^^^^^^^^^^^^^^^
= note: this can be written more efficiently by appending to a `String` directly
error: use of `format!` to build up a string from an iterator
--> $DIR/format_collect.rs:24:5
|
LL | / (1..10)
LL | | .map(|s| {
LL | | let y = 1;
LL | | format!("{s} {y}")
LL | | })
LL | | .collect()
| |__________________^
|
help: call `fold` instead
--> $DIR/format_collect.rs:25:10
|
LL | .map(|s| {
| ^^^
help: ... and use the `write!` macro here
--> $DIR/format_collect.rs:27:13
|
LL | format!("{s} {y}")
| ^^^^^^^^^^^^^^^^^^
= note: this can be written more efficiently by appending to a `String` directly
error: aborting due to 3 previous errors