diff options
Diffstat (limited to 'chapel.html.markdown')
| -rw-r--r-- | chapel.html.markdown | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/chapel.html.markdown b/chapel.html.markdown index b124f54a..520f959d 100644 --- a/chapel.html.markdown +++ b/chapel.html.markdown @@ -32,7 +32,7 @@ stderr.writeln( "This goes to standard error" ); var myVar = 10; // 10 is an int, so myVar is implicitly an int myVar = -10; var mySecondVar = myVar; -// var anError; // this would be a compile time error. +// var anError; // this would be a compile-time error. // We can (and should) explicitly type things var myThirdVar: real; @@ -57,11 +57,11 @@ var my64Real: real(64) = 1.516; // 64 bit (8 bytes) sized real var intFromReal = myReal : int; var intFromReal2: int = myReal : int; -// consts are constants, they cannot be changed after set in runtime +// consts are constants, they cannot be changed after set in runtime. const almostPi: real = 22.0/7.0; -// params are constants whose value must be known statically at compile time -// Like consts, they cannot be changed during runtime +// params are constants whose value must be known statically at compile-time +// Their value cannot be changed. param compileTimeConst: int = 16; // The config modifier allows values to be set at the command line @@ -71,10 +71,10 @@ config var varCmdLineArg: int = -123; config const constCmdLineArg: int = 777; // Set with --VarName=Value or --VarName Value at run time -// config params can be set at compile time +// config params can be set/changed at compile-time config param paramCmdLineArg: bool = false; +// Set config with --set paramCmdLineArg=value at compile-time writeln( varCmdLineArg, ", ", constCmdLineArg, ", ", paramCmdLineArg ); -// Set config with --set paramCmdLineArg=value at compile time // refs operate much like a reference in C++ var actual = 10; @@ -465,7 +465,7 @@ genericProc( 1.0+2.0i, 3.0+4.0i ); // We can also enforce a form of polymorphism with the 'where' clause // This allows the compiler to decide which function to use. -// Note: that means that all information needs to be known at compile time. +// Note: that means that all information needs to be known at compile-time. // The param modifier on the arg is used to enforce this constraint. proc whereProc( param N : int ): void where ( N > 0 ) { @@ -896,6 +896,7 @@ Builds like other compilers: ```chpl myFile.chpl -o myExe``` -A notable argument: +Notable arguments: * ``--fast``: enables a number of optimizations and disables array bounds checks. Should only enable when application is stable. + * ```--set <Symbol Name>=<Value>```: set config param <Symbol Name> to <Value> at compile-time |