4 ms·

Can anyone explain the use of the "·" character?

by marcell 12y ago

hornetblack 12y ago
In go you use '.' for namespace accesses. Eg: os.NewFile. But in C '.' means access struct member. So the · is used instead so to do f = os.NewFile(3, "/dev/zero") # Go you would use f = os·NewFile(3, "/dev/zero"); # C
markuskobler 12y ago
So Russ Cox goes into more detail in this post https://groups.google.com/d/msg/golang-nuts/MdYlJbW4SAo/TrAEoCjAkMwJ https://groups.google.com/d/msg/golang-nuts/MdYlJbW4SAo/TrAE... Although Go does not compile via C, occasionally C code does need to refer to Go identifiers. Since we chose not to restrict the mangled Go names to the space of valid C names, we must add some mechanism to refer to Go names from C. That mechanism is: 1. In the assemblers and C compilers, which already accepted all non-ASCII Unicode code points in identifiers, the Unicode characters · and / rewrite to ordinary . and / in the object files. 2. A symbol with a leading . has its import path inserted before the . when being linked: inside encoding/json.a, a reference to ".Marshal" is equivalent to "encoding/json.Marshal". Because of 2, we went a long time without needing a special character for slash. Recently the introduction of race detection has made it convenient for package runtime to be able to refer to a few symbols in runtime/race, hence the new slash lookalike."
- akavel 12y ago
  For some supplementary information, see also this answer on stackoverflow: http://stackoverflow.com/a/13490787/98528 http://stackoverflow.com/a/13490787/98528
- frou_dh 12y ago
  When did statements like this sprout a So on the front? It's everywhere now!
4ad 12y ago
Some trivia: In acme or sam (the preferred editors of at least Rob Pike, Russ Cox and Ken Thompson) it is trivial to type a ·. Basically you type ALT . . In fact it's pretty easy to type a whole bunch of Unicode stuff, see keyboard(6): http://plan9.bell-labs.com/magic/man2html/6/keyboard http://plan9.bell-labs.com/magic/man2html/6/keyboard

Can anyone explain the use of the "·" character?

by marcell 12y ago

Can anyone explain the use of the "·" character?

In go you use '.' for namespace accesses. Eg: os.NewFile. But in C '.' means access struct member. So the · is used instead so to do f = os.NewFile(3, "/dev/zero") # Go you would use f = os·NewFile(3, "/dev/zero"); # C

markuskobler 12y ago

So Russ Cox goes into more detail in this post https://groups.google.com/d/msg/golang-nuts/MdYlJbW4SAo/TrAEoCjAkMwJ https://groups.google.com/d/msg/golang-nuts/MdYlJbW4SAo/TrAE... Although Go does not compile via C, occasionally C code does need to refer to Go identifiers. Since we chose not to restrict the mangled Go names to the space of valid C names, we must add some mechanism to refer to Go names from C. That mechanism is: 1. In the assemblers and C compilers, which already accepted all non-ASCII Unicode code points in identifiers, the Unicode characters · and / rewrite to ordinary . and / in the object files. 2. A symbol with a leading . has its import path inserted before the . when being linked: inside encoding/json.a, a reference to ".Marshal" is equivalent to "encoding/json.Marshal". Because of 2, we went a long time without needing a special character for slash. Recently the introduction of race detection has made it convenient for package runtime to be able to refer to a few symbols in runtime/race, hence the new slash lookalike."

akavel 12y ago
For some supplementary information, see also this answer on stackoverflow: http://stackoverflow.com/a/13490787/98528 http://stackoverflow.com/a/13490787/98528
frou_dh 12y ago
When did statements like this sprout a So on the front? It's everywhere now!

4ad 12y ago

Some trivia: In acme or sam (the preferred editors of at least Rob Pike, Russ Cox and Ken Thompson) it is trivial to type a ·. Basically you type ALT . . In fact it's pretty easy to type a whole bunch of Unicode stuff, see keyboard(6): http://plan9.bell-labs.com/magic/man2html/6/keyboard http://plan9.bell-labs.com/magic/man2html/6/keyboard