search for: disciminator

...ike this: > > var x:int or String. > > The variable 'x' can be either an integer or a reference to a string > object. In LLVM assembly, this data structure is represented by the > following struct: > > { i1, String * } > > The 'i1' field (the 'disciminator') is used to determine what kind of value > is currently stored in the union. If it's 0, then it's an int, and the > structure will be cast to { i8, int } before extracting the value. If it's > 1, then it's a String pointer. The compiler does not allow access to the &gt...

...ted union type, whose type declaration looks like this: var x:int or String. The variable 'x' can be either an integer or a reference to a string object. In LLVM assembly, this data structure is represented by the following struct: { i1, String * } The 'i1' field (the 'disciminator') is used to determine what kind of value is currently stored in the union. If it's 0, then it's an int, and the structure will be cast to { i8, int } before extracting the value. If it's 1, then it's a String pointer. The compiler does not allow access to the wrong type - if th...

...or String. >> >> The variable 'x' can be either an integer or a reference to a string >> object. In LLVM assembly, this data structure is represented by the >> following struct: >> >> { i1, String * } >> >> The 'i1' field (the 'disciminator') is used to determine what kind of >> value is currently stored in the union. If it's 0, then it's an int, and the >> structure will be cast to { i8, int } before extracting the value. If it's >> 1, then it's a String pointer. The compiler does not allow acces...

Hi Talin, On Sat, Sep 25, 2010 at 4:18 AM, Talin <viridia at gmail.com> wrote: > > > Many languages support the notion of a "value type". Value types are always > passed by value, unlike reference types which are always passed by > pointer. An example is the "struct" type in C#. Another example is a "tuple" > type. A value type which is a

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