Just curious, is a Go string a C string inside (rune array + nil) or a proper class array?
In other words, in
a:="b"+"c"
IOW, does it implement the Slemiel's painting algorithm or not?
Reversing Go Binaries Like a Pro
11–20 of 28 posts
Re: Reversing Go Binaries Like a Pro
#12Just curious, is a Go string a C string inside (rune array + nil) or a proper class array? In other words, in a:="b"+"c" IOW, does it implement the Slemiel's painting algorithm or not?
I'm not sure I 100% understand your question, but in Go a string is a two-word struct.
type string struct {
data unsafe.Pointer
len int
}
typedef struct string {
const *char data;
int len;
} string;
Re: Reversing Go Binaries Like a Pro
#13Glad to see the code still looks like crap, beautiful assembly, so using any of that is not going to make sense. Which is good news for distributing a Go binary.
Re: Reversing Go Binaries Like a Pro
#14Just curious, is a Go string a C string inside (rune array + nil) or a proper class array? In other words, in a:="b"+"c" IOW, does it implement the Slemiel's painting algorithm or not?
>Just curious, is a Go string a C string inside (rune array + nil) or a proper class array?
I can't imagine how you would even implement a string as anything other than a rune array.
Even a Pascal string is just the string length followed by characters.
Re: Reversing Go Binaries Like a Pro
#15Re: Reversing Go Binaries Like a Pro
#16Just curious, is a Go string a C string inside (rune array + nil) or a proper class array? In other words, in a:="b"+"c" IOW, does it implement the Slemiel's painting algorithm or not?
>Just curious, is a Go string a C string inside (rune array + nil) or a proper class array? I can't imagine how you would even implement a string as anything other than a rune array. Even a Pascal string is just the string length followed by characters.
as C does: with a \00 end marker.
Re: Reversing Go Binaries Like a Pro
#17Just curious, is a Go string a C string inside (rune array + nil) or a proper class array? In other words, in a:="b"+"c" IOW, does it implement the Slemiel's painting algorithm or not?
>Just curious, is a Go string a C string inside (rune array + nil) or a proper class array? I can't imagine how you would even implement a string as anything other than a rune array. Even a Pascal string is just the string length followed by characters.
> I can't imagine how you would even implement a string as anything other than a rune array.
You can also implement strings using a tree data structure. We do this in an implementation of Ruby that I work on because it can make concatenation faster.
Re: Reversing Go Binaries Like a Pro
#18Just curious, is a Go string a C string inside (rune array + nil) or a proper class array? In other words, in a:="b"+"c" IOW, does it implement the Slemiel's painting algorithm or not?
>Just curious, is a Go string a C string inside (rune array + nil) or a proper class array? I can't imagine how you would even implement a string as anything other than a rune array. Even a Pascal string is just the string length followed by characters.
A text editor edits a (potentially very long) string, but apart from, possibly, the likes of Notepad, none of them store that string as a single byte array.
So, look at text editor data structures for other representations. Examples:
- https://en.wikipedia.org/wiki/Gap_buffer
Re: Reversing Go Binaries Like a Pro
#19Just curious, is a Go string a C string inside (rune array + nil) or a proper class array? In other words, in a:="b"+"c" IOW, does it implement the Slemiel's painting algorithm or not?
I'm not sure I 100% understand your question, but in Go a string is a two-word struct. type string struct { data unsafe.Pointer len int } The C version would be typedef struct string { const *char data; int len; } string; Edit: oh, ok. I Googled the "painting algorithm" reference. I swear I had read that before :-)
If you consider googling it too: http://wiki.c2.com/?ShlemielThePainter
Re: Reversing Go Binaries Like a Pro
#20Just curious, is a Go string a C string inside (rune array + nil) or a proper class array? In other words, in a:="b"+"c" IOW, does it implement the Slemiel's painting algorithm or not?
>Just curious, is a Go string a C string inside (rune array + nil) or a proper class array? I can't imagine how you would even implement a string as anything other than a rune array. Even a Pascal string is just the string length followed by characters.
In Haskell strings are lists of characters (https://hackage.haskell.org/package/base-4.9.0.0/docs/Data-S...). I hear not everyone is thrilled with the performance implications. :)
Also not a Haskell programmer, and really not meaning to criticize. Haskell seems awesome and I should learn it some day.