| ... | @@ -965,7 +965,7 @@ test "thread local storage" { | ... | @@ -965,7 +965,7 @@ test "thread local storage" { |
| 965 | thread2.wait(); | 965 | thread2.wait(); |
| 966 | } | 966 | } |
| 967 | | 967 | |
| 968 | fn testTls(context: void) void { | 968 | fn testTls(_: void) void { |
| 969 | assert(x == 1234); | 969 | assert(x == 1234); |
| 970 | x += 1; | 970 | x += 1; |
| 971 | assert(x == 1235); | 971 | assert(x == 1235); |
| ... | @@ -2502,6 +2502,8 @@ test "struct namespaced variable" { | ... | @@ -2502,6 +2502,8 @@ test "struct namespaced variable" { |
| 2502 | | 2502 | |
| 2503 | // you can still instantiate an empty struct | 2503 | // you can still instantiate an empty struct |
| 2504 | const does_nothing = Empty {}; | 2504 | const does_nothing = Empty {}; |
| | 2505 | |
| | 2506 | _ = does_nothing; |
| 2505 | } | 2507 | } |
| 2506 | | 2508 | |
| 2507 | // struct field order is determined by the compiler for optimal performance. | 2509 | // struct field order is determined by the compiler for optimal performance. |
| ... | @@ -3026,11 +3028,12 @@ const Foo = enum { a, b, c }; | ... | @@ -3026,11 +3028,12 @@ const Foo = enum { a, b, c }; |
| 3026 | export fn entry(foo: Foo) void { } | 3028 | export fn entry(foo: Foo) void { } |
| 3027 | {#code_end#} | 3029 | {#code_end#} |
| 3028 | <p> | 3030 | <p> |
| 3029 | For a C-ABI-compatible enum, use {#syntax#}extern enum{#endsyntax#}: | 3031 | For a C-ABI-compatible enum, provide an explicit tag type to |
| | 3032 | the enum: |
| 3030 | </p> | 3033 | </p> |
| 3031 | {#code_begin|obj#} | 3034 | {#code_begin|obj#} |
| 3032 | const Foo = extern enum { a, b, c }; | 3035 | const Foo = enum(c_int) { a, b, c }; |
| 3033 | export fn entry(foo: Foo) void { } | 3036 | export fn entry(foo: Foo) void { _ = foo; } |
| 3034 | {#code_end#} | 3037 | {#code_end#} |
| 3035 | {#header_close#} | 3038 | {#header_close#} |
| 3036 | | 3039 | |
| ... | @@ -3392,9 +3395,11 @@ test "inside test block" { | ... | @@ -3392,9 +3395,11 @@ test "inside test block" { |
| 3392 | test "separate scopes" { | 3395 | test "separate scopes" { |
| 3393 | { | 3396 | { |
| 3394 | const pi = 3.14; | 3397 | const pi = 3.14; |
| | 3398 | _ = pi; |
| 3395 | } | 3399 | } |
| 3396 | { | 3400 | { |
| 3397 | var pi: bool = true; | 3401 | var pi: bool = true; |
| | 3402 | _ = pi; |
| 3398 | } | 3403 | } |
| 3399 | } | 3404 | } |
| 3400 | {#code_end#} | 3405 | {#code_end#} |
| ... | @@ -3432,7 +3437,7 @@ test "switch simple" { | ... | @@ -3432,7 +3437,7 @@ test "switch simple" { |
| 3432 | // Switching on arbitrary expressions is allowed as long as the | 3437 | // Switching on arbitrary expressions is allowed as long as the |
| 3433 | // expression is known at compile-time. | 3438 | // expression is known at compile-time. |
| 3434 | zz => zz, | 3439 | zz => zz, |
| 3435 | comptime blk: { | 3440 | blk: { |
| 3436 | const d: u32 = 5; | 3441 | const d: u32 = 5; |
| 3437 | const e: u32 = 100; | 3442 | const e: u32 = 100; |
| 3438 | break :blk d + e; | 3443 | break :blk d + e; |
| ... | @@ -3831,7 +3836,7 @@ test "for basics" { | ... | @@ -3831,7 +3836,7 @@ test "for basics" { |
| 3831 | // To access the index of iteration, specify a second capture value. | 3836 | // To access the index of iteration, specify a second capture value. |
| 3832 | // This is zero-indexed. | 3837 | // This is zero-indexed. |
| 3833 | var sum2: i32 = 0; | 3838 | var sum2: i32 = 0; |
| 3834 | for (items) |value, i| { | 3839 | for (items) |_, i| { |
| 3835 | try expect(@TypeOf(i) == usize); | 3840 | try expect(@TypeOf(i) == usize); |
| 3836 | sum2 += @intCast(i32, i); | 3841 | sum2 += @intCast(i32, i); |
| 3837 | } | 3842 | } |
| ... | @@ -3984,7 +3989,7 @@ test "if optional" { | ... | @@ -3984,7 +3989,7 @@ test "if optional" { |
| 3984 | } | 3989 | } |
| 3985 | | 3990 | |
| 3986 | const b: ?u32 = null; | 3991 | const b: ?u32 = null; |
| 3987 | if (b) |value| { | 3992 | if (b) |_| { |
| 3988 | unreachable; | 3993 | unreachable; |
| 3989 | } else { | 3994 | } else { |
| 3990 | try expect(true); | 3995 | try expect(true); |
| ... | @@ -4021,11 +4026,13 @@ test "if error union" { | ... | @@ -4021,11 +4026,13 @@ test "if error union" { |
| 4021 | if (a) |value| { | 4026 | if (a) |value| { |
| 4022 | try expect(value == 0); | 4027 | try expect(value == 0); |
| 4023 | } else |err| { | 4028 | } else |err| { |
| | 4029 | _ = err; |
| 4024 | unreachable; | 4030 | unreachable; |
| 4025 | } | 4031 | } |
| 4026 | | 4032 | |
| 4027 | const b: anyerror!u32 = error.BadValue; | 4033 | const b: anyerror!u32 = error.BadValue; |
| 4028 | if (b) |value| { | 4034 | if (b) |value| { |
| | 4035 | _ = value; |
| 4029 | unreachable; | 4036 | unreachable; |
| 4030 | } else |err| { | 4037 | } else |err| { |
| 4031 | try expect(err == error.BadValue); | 4038 | try expect(err == error.BadValue); |
| ... | @@ -4045,13 +4052,13 @@ test "if error union" { | ... | @@ -4045,13 +4052,13 @@ test "if error union" { |
| 4045 | var c: anyerror!u32 = 3; | 4052 | var c: anyerror!u32 = 3; |
| 4046 | if (c) |*value| { | 4053 | if (c) |*value| { |
| 4047 | value.* = 9; | 4054 | value.* = 9; |
| 4048 | } else |err| { | 4055 | } else |_| { |
| 4049 | unreachable; | 4056 | unreachable; |
| 4050 | } | 4057 | } |
| 4051 | | 4058 | |
| 4052 | if (c) |value| { | 4059 | if (c) |value| { |
| 4053 | try expect(value == 9); | 4060 | try expect(value == 9); |
| 4054 | } else |err| { | 4061 | } else |_| { |
| 4055 | unreachable; | 4062 | unreachable; |
| 4056 | } | 4063 | } |
| 4057 | } | 4064 | } |
| ... | @@ -4064,18 +4071,20 @@ test "if error union with optional" { | ... | @@ -4064,18 +4071,20 @@ test "if error union with optional" { |
| 4064 | if (a) |optional_value| { | 4071 | if (a) |optional_value| { |
| 4065 | try expect(optional_value.? == 0); | 4072 | try expect(optional_value.? == 0); |
| 4066 | } else |err| { | 4073 | } else |err| { |
| | 4074 | _ = err; |
| 4067 | unreachable; | 4075 | unreachable; |
| 4068 | } | 4076 | } |
| 4069 | | 4077 | |
| 4070 | const b: anyerror!?u32 = null; | 4078 | const b: anyerror!?u32 = null; |
| 4071 | if (b) |optional_value| { | 4079 | if (b) |optional_value| { |
| 4072 | try expect(optional_value == null); | 4080 | try expect(optional_value == null); |
| 4073 | } else |err| { | 4081 | } else |_| { |
| 4074 | unreachable; | 4082 | unreachable; |
| 4075 | } | 4083 | } |
| 4076 | | 4084 | |
| 4077 | const c: anyerror!?u32 = error.BadValue; | 4085 | const c: anyerror!?u32 = error.BadValue; |
| 4078 | if (c) |optional_value| { | 4086 | if (c) |optional_value| { |
| | 4087 | _ = optional_value; |
| 4079 | unreachable; | 4088 | unreachable; |
| 4080 | } else |err| { | 4089 | } else |err| { |
| 4081 | try expect(err == error.BadValue); | 4090 | try expect(err == error.BadValue); |
| ... | @@ -4087,13 +4096,13 @@ test "if error union with optional" { | ... | @@ -4087,13 +4096,13 @@ test "if error union with optional" { |
| 4087 | if (optional_value.*) |*value| { | 4096 | if (optional_value.*) |*value| { |
| 4088 | value.* = 9; | 4097 | value.* = 9; |
| 4089 | } | 4098 | } |
| 4090 | } else |err| { | 4099 | } else |_| { |
| 4091 | unreachable; | 4100 | unreachable; |
| 4092 | } | 4101 | } |
| 4093 | | 4102 | |
| 4094 | if (d) |optional_value| { | 4103 | if (d) |optional_value| { |
| 4095 | try expect(optional_value.? == 9); | 4104 | try expect(optional_value.? == 9); |
| 4096 | } else |err| { | 4105 | } else |_| { |
| 4097 | unreachable; | 4106 | unreachable; |
| 4098 | } | 4107 | } |
| 4099 | } | 4108 | } |
| ... | @@ -4246,6 +4255,7 @@ test "type of unreachable" { | ... | @@ -4246,6 +4255,7 @@ test "type of unreachable" { |
| 4246 | {#code_begin|test#} | 4255 | {#code_begin|test#} |
| 4247 | fn foo(condition: bool, b: u32) void { | 4256 | fn foo(condition: bool, b: u32) void { |
| 4248 | const a = if (condition) b else return; | 4257 | const a = if (condition) b else return; |
| | 4258 | _ = a; |
| 4249 | @panic("do something with a"); | 4259 | @panic("do something with a"); |
| 4250 | } | 4260 | } |
| 4251 | test "noreturn" { | 4261 | test "noreturn" { |
| ... | @@ -4574,7 +4584,7 @@ test "parse u64" { | ... | @@ -4574,7 +4584,7 @@ test "parse u64" { |
| 4574 | {#code_begin|syntax#} | 4584 | {#code_begin|syntax#} |
| 4575 | fn doAThing(str: []u8) void { | 4585 | fn doAThing(str: []u8) void { |
| 4576 | const number = parseU64(str, 10) catch 13; | 4586 | const number = parseU64(str, 10) catch 13; |
| 4577 | // ... | 4587 | _ = number; // ... |
| 4578 | } | 4588 | } |
| 4579 | {#code_end#} | 4589 | {#code_end#} |
| 4580 | <p> | 4590 | <p> |
| ... | @@ -4589,7 +4599,7 @@ fn doAThing(str: []u8) void { | ... | @@ -4589,7 +4599,7 @@ fn doAThing(str: []u8) void { |
| 4589 | {#code_begin|syntax#} | 4599 | {#code_begin|syntax#} |
| 4590 | fn doAThing(str: []u8) !void { | 4600 | fn doAThing(str: []u8) !void { |
| 4591 | const number = parseU64(str, 10) catch |err| return err; | 4601 | const number = parseU64(str, 10) catch |err| return err; |
| 4592 | // ... | 4602 | _ = number; // ... |
| 4593 | } | 4603 | } |
| 4594 | {#code_end#} | 4604 | {#code_end#} |
| 4595 | <p> | 4605 | <p> |
| ... | @@ -4598,7 +4608,7 @@ fn doAThing(str: []u8) !void { | ... | @@ -4598,7 +4608,7 @@ fn doAThing(str: []u8) !void { |
| 4598 | {#code_begin|syntax#} | 4608 | {#code_begin|syntax#} |
| 4599 | fn doAThing(str: []u8) !void { | 4609 | fn doAThing(str: []u8) !void { |
| 4600 | const number = try parseU64(str, 10); | 4610 | const number = try parseU64(str, 10); |
| 4601 | // ... | 4611 | _ = number; // ... |
| 4602 | } | 4612 | } |
| 4603 | {#code_end#} | 4613 | {#code_end#} |
| 4604 | <p> | 4614 | <p> |
| ... | @@ -5022,7 +5032,7 @@ extern fn malloc(size: size_t) ?*u8; | ... | @@ -5022,7 +5032,7 @@ extern fn malloc(size: size_t) ?*u8; |
| 5022 | | 5032 | |
| 5023 | fn doAThing() ?*Foo { | 5033 | fn doAThing() ?*Foo { |
| 5024 | const ptr = malloc(1234) orelse return null; | 5034 | const ptr = malloc(1234) orelse return null; |
| 5025 | // ... | 5035 | _ = ptr; // ... |
| 5026 | } | 5036 | } |
| 5027 | {#code_end#} | 5037 | {#code_end#} |
| 5028 | <p> | 5038 | <p> |
| ... | @@ -5135,6 +5145,7 @@ test "optional pointers" { | ... | @@ -5135,6 +5145,7 @@ test "optional pointers" { |
| 5135 | test "type coercion - variable declaration" { | 5145 | test "type coercion - variable declaration" { |
| 5136 | var a: u8 = 1; | 5146 | var a: u8 = 1; |
| 5137 | var b: u16 = a; | 5147 | var b: u16 = a; |
| | 5148 | _ = b; |
| 5138 | } | 5149 | } |
| 5139 | | 5150 | |
| 5140 | test "type coercion - function call" { | 5151 | test "type coercion - function call" { |
| ... | @@ -5142,11 +5153,14 @@ test "type coercion - function call" { | ... | @@ -5142,11 +5153,14 @@ test "type coercion - function call" { |
| 5142 | foo(a); | 5153 | foo(a); |
| 5143 | } | 5154 | } |
| 5144 | | 5155 | |
| 5145 | fn foo(b: u16) void {} | 5156 | fn foo(b: u16) void { |
| | 5157 | _ = b; |
| | 5158 | } |
| 5146 | | 5159 | |
| 5147 | test "type coercion - @as builtin" { | 5160 | test "type coercion - @as builtin" { |
| 5148 | var a: u8 = 1; | 5161 | var a: u8 = 1; |
| 5149 | var b = @as(u16, a); | 5162 | var b = @as(u16, a); |
| | 5163 | _ = b; |
| 5150 | } | 5164 | } |
| 5151 | {#code_end#} | 5165 | {#code_end#} |
| 5152 | <p> | 5166 | <p> |
| ... | @@ -5174,7 +5188,7 @@ test "type coercion - const qualification" { | ... | @@ -5174,7 +5188,7 @@ test "type coercion - const qualification" { |
| 5174 | foo(b); | 5188 | foo(b); |
| 5175 | } | 5189 | } |
| 5176 | | 5190 | |
| 5177 | fn foo(a: *const i32) void {} | 5191 | fn foo(_: *const i32) void {} |
| 5178 | {#code_end#} | 5192 | {#code_end#} |
| 5179 | <p> | 5193 | <p> |
| 5180 | In addition, pointers coerce to const optional pointers: | 5194 | In addition, pointers coerce to const optional pointers: |
| ... | @@ -5424,7 +5438,7 @@ test "coercion between unions and enums" { | ... | @@ -5424,7 +5438,7 @@ test "coercion between unions and enums" { |
| 5424 | test "coercion of zero bit types" { | 5438 | test "coercion of zero bit types" { |
| 5425 | var x: void = {}; | 5439 | var x: void = {}; |
| 5426 | var y: *void = x; | 5440 | var y: *void = x; |
| 5427 | //var z: void = y; // TODO | 5441 | _ = y; |
| 5428 | } | 5442 | } |
| 5429 | {#code_end#} | 5443 | {#code_end#} |
| 5430 | {#header_close#} | 5444 | {#header_close#} |
| ... | @@ -6569,6 +6583,7 @@ var x: i32 = 1; | ... | @@ -6569,6 +6583,7 @@ var x: i32 = 1; |
| 6569 | test "suspend with no resume" { | 6583 | test "suspend with no resume" { |
| 6570 | var frame = async func(); | 6584 | var frame = async func(); |
| 6571 | try expect(x == 2); | 6585 | try expect(x == 2); |
| | 6586 | _ = frame; |
| 6572 | } | 6587 | } |
| 6573 | | 6588 | |
| 6574 | fn func() void { | 6589 | fn func() void { |
| ... | @@ -6800,6 +6815,7 @@ fn amain() !void { | ... | @@ -6800,6 +6815,7 @@ fn amain() !void { |
| 6800 | | 6815 | |
| 6801 | var global_download_frame: anyframe = undefined; | 6816 | var global_download_frame: anyframe = undefined; |
| 6802 | fn fetchUrl(allocator: *Allocator, url: []const u8) ![]u8 { | 6817 | fn fetchUrl(allocator: *Allocator, url: []const u8) ![]u8 { |
| | 6818 | _ = url; // this is just an example, we don't actually do it! |
| 6803 | const result = try std.mem.dupe(allocator, u8, "this is the downloaded url contents"); | 6819 | const result = try std.mem.dupe(allocator, u8, "this is the downloaded url contents"); |
| 6804 | errdefer allocator.free(result); | 6820 | errdefer allocator.free(result); |
| 6805 | suspend { | 6821 | suspend { |
| ... | @@ -6811,6 +6827,7 @@ fn fetchUrl(allocator: *Allocator, url: []const u8) ![]u8 { | ... | @@ -6811,6 +6827,7 @@ fn fetchUrl(allocator: *Allocator, url: []const u8) ![]u8 { |
| 6811 | | 6827 | |
| 6812 | var global_file_frame: anyframe = undefined; | 6828 | var global_file_frame: anyframe = undefined; |
| 6813 | fn readFile(allocator: *Allocator, filename: []const u8) ![]u8 { | 6829 | fn readFile(allocator: *Allocator, filename: []const u8) ![]u8 { |
| | 6830 | _ = filename; // this is just an example, we don't actually do it! |
| 6814 | const result = try std.mem.dupe(allocator, u8, "this is the file contents"); | 6831 | const result = try std.mem.dupe(allocator, u8, "this is the file contents"); |
| 6815 | errdefer allocator.free(result); | 6832 | errdefer allocator.free(result); |
| 6816 | suspend { | 6833 | suspend { |
| ... | @@ -6869,6 +6886,7 @@ fn amain() !void { | ... | @@ -6869,6 +6886,7 @@ fn amain() !void { |
| 6869 | } | 6886 | } |
| 6870 | | 6887 | |
| 6871 | fn fetchUrl(allocator: *Allocator, url: []const u8) ![]u8 { | 6888 | fn fetchUrl(allocator: *Allocator, url: []const u8) ![]u8 { |
| | 6889 | _ = url; // this is just an example, we don't actually do it! |
| 6872 | const result = try std.mem.dupe(allocator, u8, "this is the downloaded url contents"); | 6890 | const result = try std.mem.dupe(allocator, u8, "this is the downloaded url contents"); |
| 6873 | errdefer allocator.free(result); | 6891 | errdefer allocator.free(result); |
| 6874 | std.debug.print("fetchUrl returning\n", .{}); | 6892 | std.debug.print("fetchUrl returning\n", .{}); |
| ... | @@ -6876,6 +6894,7 @@ fn fetchUrl(allocator: *Allocator, url: []const u8) ![]u8 { | ... | @@ -6876,6 +6894,7 @@ fn fetchUrl(allocator: *Allocator, url: []const u8) ![]u8 { |
| 6876 | } | 6894 | } |
| 6877 | | 6895 | |
| 6878 | fn readFile(allocator: *Allocator, filename: []const u8) ![]u8 { | 6896 | fn readFile(allocator: *Allocator, filename: []const u8) ![]u8 { |
| | 6897 | _ = filename; // this is just an example, we don't actually do it! |
| 6879 | const result = try std.mem.dupe(allocator, u8, "this is the file contents"); | 6898 | const result = try std.mem.dupe(allocator, u8, "this is the file contents"); |
| 6880 | errdefer allocator.free(result); | 6899 | errdefer allocator.free(result); |
| 6881 | std.debug.print("readFile returning\n", .{}); | 6900 | std.debug.print("readFile returning\n", .{}); |
| ... | @@ -8584,6 +8603,7 @@ fn List(comptime T: type) type { | ... | @@ -8584,6 +8603,7 @@ fn List(comptime T: type) type { |
| 8584 | test "integer cast panic" { | 8603 | test "integer cast panic" { |
| 8585 | var a: u16 = 0xabcd; | 8604 | var a: u16 = 0xabcd; |
| 8586 | var b: u8 = @intCast(u8, a); | 8605 | var b: u8 = @intCast(u8, a); |
| | 8606 | _ = b; |
| 8587 | } | 8607 | } |
| 8588 | {#code_end#} | 8608 | {#code_end#} |
| 8589 | <p> | 8609 | <p> |
| ... | @@ -8839,6 +8859,7 @@ comptime { | ... | @@ -8839,6 +8859,7 @@ comptime { |
| 8839 | {#code_begin|exe_err#} | 8859 | {#code_begin|exe_err#} |
| 8840 | pub fn main() void { | 8860 | pub fn main() void { |
| 8841 | var x = foo("hello"); | 8861 | var x = foo("hello"); |
| | 8862 | _ = x; |
| 8842 | } | 8863 | } |
| 8843 | | 8864 | |
| 8844 | fn foo(x: []const u8) u8 { | 8865 | fn foo(x: []const u8) u8 { |
| ... | @@ -9107,6 +9128,7 @@ pub fn main() void { | ... | @@ -9107,6 +9128,7 @@ pub fn main() void { |
| 9107 | comptime { | 9128 | comptime { |
| 9108 | const optional_number: ?i32 = null; | 9129 | const optional_number: ?i32 = null; |
| 9109 | const number = optional_number.?; | 9130 | const number = optional_number.?; |
| | 9131 | _ = number; |
| 9110 | } | 9132 | } |
| 9111 | {#code_end#} | 9133 | {#code_end#} |
| 9112 | <p>At runtime:</p> | 9134 | <p>At runtime:</p> |
| ... | @@ -9140,6 +9162,7 @@ pub fn main() void { | ... | @@ -9140,6 +9162,7 @@ pub fn main() void { |
| 9140 | {#code_begin|test_err|caught unexpected error 'UnableToReturnNumber'#} | 9162 | {#code_begin|test_err|caught unexpected error 'UnableToReturnNumber'#} |
| 9141 | comptime { | 9163 | comptime { |
| 9142 | const number = getNumberOrFail() catch unreachable; | 9164 | const number = getNumberOrFail() catch unreachable; |
| | 9165 | _ = number; |
| 9143 | } | 9166 | } |
| 9144 | | 9167 | |
| 9145 | fn getNumberOrFail() !i32 { | 9168 | fn getNumberOrFail() !i32 { |
| ... | @@ -9187,6 +9210,7 @@ comptime { | ... | @@ -9187,6 +9210,7 @@ comptime { |
| 9187 | const err = error.AnError; | 9210 | const err = error.AnError; |
| 9188 | const number = @errorToInt(err) + 10; | 9211 | const number = @errorToInt(err) + 10; |
| 9189 | const invalid_err = @intToError(number); | 9212 | const invalid_err = @intToError(number); |
| | 9213 | _ = invalid_err; |
| 9190 | } | 9214 | } |
| 9191 | {#code_end#} | 9215 | {#code_end#} |
| 9192 | <p>At runtime:</p> | 9216 | <p>At runtime:</p> |
| ... | @@ -9197,7 +9221,7 @@ pub fn main() void { | ... | @@ -9197,7 +9221,7 @@ pub fn main() void { |
| 9197 | var err = error.AnError; | 9221 | var err = error.AnError; |
| 9198 | var number = @errorToInt(err) + 500; | 9222 | var number = @errorToInt(err) + 500; |
| 9199 | var invalid_err = @intToError(number); | 9223 | var invalid_err = @intToError(number); |
| 9200 | std.debug.print("value: {}\n", .{number}); | 9224 | std.debug.print("value: {}\n", .{invalid_err}); |
| 9201 | } | 9225 | } |
| 9202 | {#code_end#} | 9226 | {#code_end#} |
| 9203 | {#header_close#} | 9227 | {#header_close#} |
| ... | @@ -9212,6 +9236,7 @@ const Foo = enum { | ... | @@ -9212,6 +9236,7 @@ const Foo = enum { |
| 9212 | comptime { | 9236 | comptime { |
| 9213 | const a: u2 = 3; | 9237 | const a: u2 = 3; |
| 9214 | const b = @intToEnum(Foo, a); | 9238 | const b = @intToEnum(Foo, a); |
| | 9239 | _ = b; |
| 9215 | } | 9240 | } |
| 9216 | {#code_end#} | 9241 | {#code_end#} |
| 9217 | <p>At runtime:</p> | 9242 | <p>At runtime:</p> |
| ... | @@ -9396,6 +9421,7 @@ comptime { | ... | @@ -9396,6 +9421,7 @@ comptime { |
| 9396 | pub fn main() void { | 9421 | pub fn main() void { |
| 9397 | var opt_ptr: ?*i32 = null; | 9422 | var opt_ptr: ?*i32 = null; |
| 9398 | var ptr = @ptrCast(*i32, opt_ptr); | 9423 | var ptr = @ptrCast(*i32, opt_ptr); |
| | 9424 | _ = ptr; |
| 9399 | } | 9425 | } |
| 9400 | {#code_end#} | 9426 | {#code_end#} |
| 9401 | {#header_close#} | 9427 | {#header_close#} |
| ... | @@ -9523,7 +9549,9 @@ pub fn main() !void { | ... | @@ -9523,7 +9549,9 @@ pub fn main() !void { |
| 9523 | This is why it is an error to pass a string literal to a mutable slice, like this: | 9549 | This is why it is an error to pass a string literal to a mutable slice, like this: |
| 9524 | </p> | 9550 | </p> |
| 9525 | {#code_begin|test_err|expected type '[]u8'#} | 9551 | {#code_begin|test_err|expected type '[]u8'#} |
| 9526 | fn foo(s: []u8) void {} | 9552 | fn foo(s: []u8) void { |
| | 9553 | _ = s; |
| | 9554 | } |
| 9527 | | 9555 | |
| 9528 | test "string literal to mutable slice" { | 9556 | test "string literal to mutable slice" { |
| 9529 | foo("hello"); | 9557 | foo("hello"); |
| ... | @@ -9531,7 +9559,9 @@ test "string literal to mutable slice" { | ... | @@ -9531,7 +9559,9 @@ test "string literal to mutable slice" { |
| 9531 | {#code_end#} | 9559 | {#code_end#} |
| 9532 | <p>However if you make the slice constant, then it works:</p> | 9560 | <p>However if you make the slice constant, then it works:</p> |
| 9533 | {#code_begin|test|strlit#} | 9561 | {#code_begin|test|strlit#} |
| 9534 | fn foo(s: []const u8) void {} | 9562 | fn foo(s: []const u8) void { |
| | 9563 | _ = s; |
| | 9564 | } |
| 9535 | | 9565 | |
| 9536 | test "string literal to constant slice" { | 9566 | test "string literal to constant slice" { |
| 9537 | foo("hello"); | 9567 | foo("hello"); |
| ... | @@ -10476,7 +10506,7 @@ coding style. | ... | @@ -10476,7 +10506,7 @@ coding style. |
| 10476 | </p> | 10506 | </p> |
| 10477 | {#header_close#} | 10507 | {#header_close#} |
| 10478 | {#header_open|Examples#} | 10508 | {#header_open|Examples#} |
| 10479 | {#code_begin|syntax#} | 10509 | <pre>{#syntax#} |
| 10480 | const namespace_name = @import("dir_name/file_name.zig"); | 10510 | const namespace_name = @import("dir_name/file_name.zig"); |
| 10481 | const TypeName = @import("dir_name/TypeName.zig"); | 10511 | const TypeName = @import("dir_name/TypeName.zig"); |
| 10482 | var global_var: i32 = undefined; | 10512 | var global_var: i32 = undefined; |
| ... | @@ -10520,7 +10550,7 @@ const XmlParser = struct { | ... | @@ -10520,7 +10550,7 @@ const XmlParser = struct { |
| 10520 | | 10550 | |
| 10521 | // The initials BE (Big Endian) are just another word in Zig identifier names. | 10551 | // The initials BE (Big Endian) are just another word in Zig identifier names. |
| 10522 | fn readU32Be() u32 {} | 10552 | fn readU32Be() u32 {} |
| 10523 | {#code_end#} | 10553 | {#endsyntax#}</pre> |
| 10524 | <p> | 10554 | <p> |
| 10525 | See the Zig Standard Library for more examples. | 10555 | See the Zig Standard Library for more examples. |
| 10526 | </p> | 10556 | </p> |
Andrew Kelley <andrew@ziglang.org> 2021-06-23 11:32:28-07:00