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Merge pull request #216 from chrboesch/i215

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improving the explanation
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Chris Boesch 2023-04-05 16:30:51 +02:00 committed by GitHub
commit 8bf719e5e2
1 changed files with 6 additions and 4 deletions
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10
exercises/040_pointers2.zig
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@ -12,10 +12,12 @@
// &foo is of type "*u8" // &foo is of type "*u8"
// &bar is of type "*const u8" // &bar is of type "*const u8"
// //
// You can always make a constant pointer to a variable, but you cannot // You can always make a const pointer to a mutable value (var), but
// make a variable pointer to a constant. This sounds like a logic puzzle, // you cannot make a var pointer to an immutable value (const).
// but it just means that once data is declared immutable, you can't // This sounds like a logic puzzle, but it just means that once data
// coerce it to a mutable type. It's a safety thing (to prevent mistakes). // is declared immutable, you can't coerce it to a mutable type.
// Think of mutable data as being volatile or even dangerous. Zig
// always lets you be "more safe" and never "less safe."
// //
const std = @import("std"); const std = @import("std");