diff options
| -rw-r--r-- | doc/go_lang.txt | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/doc/go_lang.txt b/doc/go_lang.txt index ecd3edd971..e3d86ad4e5 100644 --- a/doc/go_lang.txt +++ b/doc/go_lang.txt @@ -4,7 +4,7 @@ The Go Programming Language (DRAFT) Robert Griesemer, Rob Pike, Ken Thompson ---- -(August 7, 2008) +(August 11, 2008) This document is a semi-formal specification/proposal for a new systems programming language. The document is under active @@ -321,8 +321,8 @@ Reserved words else if range var export import - -TODO: "len" is currently also a reserved word - it shouldn't be. +With the exception of structure fields and methods, reserved words may +not be declared as identifiers. Types @@ -1357,9 +1357,9 @@ pointer or interface value. var p *int; if p != nil { - print p + print(p) } else { - print "p points nowhere" + print("p points nowhere") } By default, pointers are initialized to nil. @@ -1735,9 +1735,9 @@ The value of the boolean reports true if the communication succeeded, false if it did not. These two examples are equivalent: ok := ch -< 3; - if ok { print "sent" } else { print "not sent" } + if ok { print("sent") } else { print("not sent") } - if ch -< 3 { print "sent" } else { print "not sent" } + if ch -< 3 { print("sent") } else { print("not sent") } In other words, if the program tests the value of a send operation, the send is non-blocking and the value of the expression is the @@ -1753,7 +1753,7 @@ As with send operations, in expression context this form may be used as a boolean and makes the receive non-blocking: ok := e <- ch; - if ok { print "received", e } else { print "did not receive" } + if ok { print("received", e) } else { print("did not receive") } The receive operator may also be used as a prefix unary operator on a channel. @@ -1873,8 +1873,7 @@ Switch statements Switches provide multi-way execution. SwitchStat = "switch" [ [ Simplestat ] ";" ] [ Expression ] "{" { CaseClause } "}" . - CaseClause = CaseList [ StatementList [ ";" ] ] [ "fallthrough" [ ";" ] ] . - CaseList = Case { Case } . + CaseClause = Case [ StatementList [ ";" ] ] [ "fallthrough" [ ";" ] ] . Case = ( "case" ExpressionList | "default" ) ":" . There can be at most one default case in a switch statement. |