8d75920537
Primarily these changes: 1. ATX style headers. 1. `csharp` as the language identifier 1. relative link to other published proposals.
925 B
925 B
Allow digit separator after 0b or 0x
In C# 7.2, we extend the set of places that digit separators (the underscore character) can appear in integral literals. Beginning in C# 7.0, separators are permitted between the digits of a literal. Now, in C# 7.2, we also permit digit separators before the first significant digit of a binary or hexadecimal literal, after the prefix.
123 // permitted in C# 1.0 and later
1_2_3 // permitted in C# 7.0 and later
0x1_2_3 // permitted in C# 7.0 and later
0b101 // binary literals added in C# 7.0
0b1_0_1 // permitted in C# 7.0 and later
// in C# 7.2, _ is permitted after the `0x` or `0b`
0x_1_2 // permitted in C# 7.2 and later
0b_1_0_1 // permitted in C# 7.2 and later
We do not permit a decimal integer literal to have a leading underscore. A token such as _123 is an identifier.