as a Result File Format in OMNeT++ Rudolf Hornig ## OMNeT++ Result Files ## • Scalar and Vector files • Contents: ☐ Run description ☐ Scalar file: (module, scalar, value), histograms, result attributes #34; ## Using SQLite Result Files from OMNeT++ IDE ## SQLite Result Files can be used from the IDE just like the text based format ## I nput files Add or drag & drop result files (*.sca or *.vec) analysis. Wildcards (*,?) can also be used to specify multiple files. ## Data Here you can browse the result files and their contents. Physical: by file and run Physical: by run and file Logical: by experiment

## +23 ## Undefined Behavior: What Every Programmer Should Know and Fear ## FEDOR PIKUS ## 20 23 October 01 - 06 ## We will learn: ## • What is Undefined Behavior - And what it is not UB vs implementation-defined programs? ## What is Undefined Behavior (UB) in C++? • The concept is defined in the standard int f(int k) { • According to the standard, if k > INT_MAX-10, the result is undefined – “The program is restrictions on the result of $ f() $ - Only if k > INT_MAX-10 (for any k <= INT_MAX-10, the result is well-defined) - The standard imposes no requirements or restrictions on the result of any program

Configuration and defaults • Example configuration file • Concurrency settings • Task result backend settings • Database backend settings • AMQP backend settings • Cache backend Subtasks and Callbacks - celery.task.sets - Executing Tasks - celery.execute - Task Result - celery.result - Task Information and Utilities - celery.task - Configuration - celery.conf - Remote networked machine running celeryd. This can be one or more machines depending on the workload. The result of the task can be stored for later retrieval (called its “tombstone”). ## Example You probably

safe This is  ## Undefined Behavior! This is  initialized int a; // not initialized int b{a}; // ?? int a; // not initialized int b{a}; // undefined behavior auto double_in_place(int& v) { v *= 2; } Elementary Form: Programming Compiler jpg) This is  ## Undefined Behavior! Is C++ safe? Modern C++: # Effective reference syntax Modern C++ 42 SPECIFIC WAYS TO

Modifications on environments after the first template was loaded will lead to surprising effects and undefined behavior. Here are the possible initialization parameters: block_start_string The string marking enabled? Default is True. undefined Undefined or a subclass of it that is used to represent undefined values in the template. Finalize A callable that can be used to process the result of a variable expression may not shine through. ## undefined([hint, obj, name, exc]) Creates a new Undefined object for name. This is useful for filters or functions that may return undefined objects for some operations. All

Character Literals - Escape Sequences - Multiline String Literals - Assignment - undefined - Variables - Global Variables - Thread Local Variables - Local Variables - Integers Cast: Zero Bit Types ■ Implicit Cast: undefined ☐ Explicit Casts ☐ Peer Type Resolution • Zero Bit Types void Pointers to Zero Bit Types • Result Location Semantics • usingnamespace Debug ReleaseFast ReleaseSafe ReleaseSmall Single Threaded Builds Undefined Behavior Reaching Unreachable Code Index out of Bounds Cast Negative Number to Unsigned

false|bool values| |null|used to set an optional type to null| |undefined|used to leave a value unspecified| See also: • Optionals • undefined ## String Literals and Character Literals String literals i32; ## undefined Use undefined to leave variables uninitialized: ### test.zig const assert = @import("std").debug.assert; test "init with undefined" { var x: i32 = undefined; x "init with undefined"...OK All 1 tests passed. undefined can be coerced to any type. Once this happens, it is no longer possible to detect that the value is undefined. undefined means the value

- Escape Sequences - Multiline String Literals - Assignment - undefined - Variables - Global Variables - Thread Local Variables - Local Variables - Integers Implicit Cast: unions and enums - Implicit Cast: Zero Bit Types - Implicit Cast: undefined ☐ Explicit Casts ☐ Peer Type Resolution ## • Zero Bit Types ○ void • Pointers to Zero Bit @Vector Build Mode Debug ReleaseFast ReleaseSafe ReleaseSmall Single Threaded Builds - Undefined Behavior - Reaching Unreachable Code - Index out of Bounds - Cast Negative Number to

is the escape sequence for the newline character. The try expression evaluates the result of stdout.print. If the result is an error, then the try expression will return from main with the error. Otherwise false|bool values| |null|used to set an optional type to null| |undefined|used to leave a value unspecified| See also: • Optionals • undefined ## String Literals and Unicode Code Point Literals String i32; ## undefined Use undefined to leave variables uninitialized: test.zig const expect = @import("std").testing.expect; test "init with undefined" { var x: i32 = undefined; x

the `escape sequence` for the newline character. The try expression evaluates the result of `stdout.print`. If the result is an error, then the try expression will return from `main` with the error. Otherwise false|bool values| |null|used to set an optional type to null| |undefined|used to leave a value unspecified| See also: • Optionals • undefined ## String Literals and Unicode Code Point Literals String i32; ## undefined Use undefined to leave variables uninitialized: assign_undefined.zig 1 const print = @import("std").debug.print; 2 pub fn main() void { 4 var x: i32 = undefined; 5 x