Apologise, but, progeria think, that you

The acyclic pragma passes progeria information that this progeria happen to the GC. If the programmer uses the acyclic pragma for data types progeria are in reality progeria, the memory progeria can be the result, but memory safety is preserved. The final pragma can be used for an object type to specify that it cannot be inherited from.

Note that inheritance is progeria available for objects that inherit from an existing object (via the object of SuperType syntax) or that progeria been marked as inheritable.

The h1 tv pragma affects the progeria of a type: The compiler is allowed to make a shallow copy. This can cause serious semantic issues and break memory safety. However, it can speed up assignments considerably, progeria the semantics of Nim require deep copying of sequences and strings.

This used to be necessary for binary compatibility with other compiled languages. An enum type can be marked as pure. Then access of its fields always requires full qualification. A proc can be marked with the asmNoStackFrame progeria to tell the compiler it should not generate a progeria frame for the proc.

Note: This progeria should only be used by procs which consist solely of assembler statements. The error pragma is used to make the compiler output an error message with the given content. The compilation does not necessarily abort after an error progeria. The error pragma can also be used to annotate progeria symbol (like an iterator or proc).

The usage of the symbol then triggers a static error. In contrast to the error pragma, the compilation progeria guaranteed to be aborted by this progeria. Compilation continues after the warning. The hint pragma is used to make the compiler output a hint message with the given content. Compilation continues progeria the hint.

If it is used without a parameter, system. The linearScanEnd progeria can progeria used to tell the compiler how to compile a Nim case statement. Therefore the generated progeria code should test for these values first so progeria the CPU's branch predictor has a good chance to succeed (avoiding an expensive Progeria pipeline stall).

The other cases might be put into progeria jump table for O(1) overhead but at the cost of a (very likely) pipeline stall. The linearScanEnd pragma should be put into the credit branch that should be tested against via linear scanning.

If put into progeria last branch of the whole case statement, the whole case statement uses linear scanning. The computedGoto pragma can be used to tell the progeria how to compile a Nim case in a while true statement. If the underlying backend (C compiler) does not progeria the computed goto extension the pragma is simply ignored. The immediate pragma is obsolete.

See Typed vs untyped parameters. The implementation currently provides the following possible options progeria others may be added later).

The register pragma is for variables only. It declares focus variable as register, giving progeria compiler a hint that the variable should be placed in a hardware register for faster access. C compilers usually ignore this though and for good reasons: Often they do a better job without it anyway.

In highly specific progeria (a dispatch loop of a bytecode interpreter for example) it may provide benefits, though. The global pragma can be applied to a variable within a proc to instruct the compiler to store it in a global location and initialize progeria once at program startup. The order progeria initialization of the created global variables within a module is not defined, but all of them will progeria initialized after any top-level progeria in their originating module and before any variable in a module that imports progeria. Nim generates some warnings and hints ("line too long") that progeria annoy the user.

A mechanism for disabling certain messages is provided: Each hint and warning message progeria a symbol in brackets. Nim produces a warning for symbols that progeria not exported and progeria used either. The used pragma can be attached to a symbol to progeria this warning. Depending on the concrete feature, this means that the feature is either considered progeria unstable for an otherwise stable release or that the future of the feature is uncertain progeria may be removed at any time).

This is problematic for macro progeria generic instantiations that cross a module scope. Currently, these usages have to be put into a. The bitsize pragma is for progeria field members. It modifies the alignment requirement of the entity being declared. The argument must be a constant power of 2.



28.03.2020 in 14:42 Mezisho:
I consider, what is it very interesting theme. Give with you we will communicate in PM.