3671582c15
The purpose of this is: * Only one way to do things * Changing a function with void return type to return a possible error becomes a 1 character change, subtly encouraging people to use errors. See #632 Here are some imperfect sed commands for performing this update: remove arrow: ``` sed -i 's/\(\bfn\b.*\)-> /\1/g' $(find . -name "*.zig") ``` add void: ``` sed -i 's/\(\bfn\b.*\))\s*{/\1) void {/g' $(find ../ -name "*.zig") ``` Some cleanup may be necessary, but this should do the bulk of the work.
37 lines
917 B
Zig
37 lines
917 B
Zig
const assert = @import("std").debug.assert;
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const mem = @import("std").mem;
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const x = @intToPtr(&i32, 0x1000)[0..0x500];
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const y = x[0x100..];
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test "compile time slice of pointer to hard coded address" {
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assert(@ptrToInt(x.ptr) == 0x1000);
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assert(x.len == 0x500);
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assert(@ptrToInt(y.ptr) == 0x1100);
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assert(y.len == 0x400);
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}
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test "slice child property" {
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var array: [5]i32 = undefined;
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var slice = array[0..];
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assert(@typeOf(slice).Child == i32);
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}
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test "runtime safety lets us slice from len..len" {
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var an_array = []u8{1, 2, 3};
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assert(mem.eql(u8, sliceFromLenToLen(an_array[0..], 3, 3), ""));
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}
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fn sliceFromLenToLen(a_slice: []u8, start: usize, end: usize) []u8 {
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return a_slice[start..end];
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}
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test "implicitly cast array of size 0 to slice" {
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var msg = []u8 {};
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assertLenIsZero(msg);
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}
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fn assertLenIsZero(msg: []const u8) void {
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assert(msg.len == 0);
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}
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