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Merge pull request #3888 from dtolnay-contrib/syn2
Update syn dependencies in Chapter 19 to 2.0
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‎Cargo.lock‎

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‎listings/ch19-advanced-features/listing-19-31/hello_macro/hello_macro_derive/Cargo.lock‎

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‎listings/ch19-advanced-features/listing-19-31/hello_macro/hello_macro_derive/src/lib.rs‎

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use proc_macro::TokenStream;
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use quote::quote;
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use syn;
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#[proc_macro_derive(HelloMacro)]
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pub fn hello_macro_derive(input: TokenStream) -> TokenStream {

‎listings/ch19-advanced-features/listing-19-33/hello_macro/hello_macro_derive/Cargo.lock‎

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‎listings/ch19-advanced-features/listing-19-33/hello_macro/hello_macro_derive/Cargo.toml‎

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proc-macro = true
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[dependencies]
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syn = "1.0"
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syn = "2.0"
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quote = "1.0"

‎listings/ch19-advanced-features/listing-19-33/hello_macro/hello_macro_derive/src/lib.rs‎

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use proc_macro::TokenStream;
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use quote::quote;
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use syn;
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#[proc_macro_derive(HelloMacro)]
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pub fn hello_macro_derive(input: TokenStream) -> TokenStream {

‎listings/ch19-advanced-features/no-listing-21-pancakes/hello_macro/hello_macro_derive/Cargo.lock‎

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‎listings/ch19-advanced-features/no-listing-21-pancakes/hello_macro/hello_macro_derive/Cargo.toml‎

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proc-macro = true
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[dependencies]
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syn = "1.0"
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syn = "2.0"
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quote = "1.0"

‎listings/ch19-advanced-features/no-listing-21-pancakes/hello_macro/hello_macro_derive/src/lib.rs‎

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use proc_macro::TokenStream;
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use quote::quote;
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use syn;
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#[proc_macro_derive(HelloMacro)]
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pub fn hello_macro_derive(input: TokenStream) -> TokenStream {

‎listings/ch19-advanced-features/no-listing-21-pancakes/pancakes/Cargo.lock‎

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