Tutorial by Topics: co

The COBOL version of the C #include preprocessor directive. Or, more historically accurate, COBOL came first, developed some 10 years earlier. Due to some of the design decisions in COBOL (no arguments for PERFORM as the primary reason), many data structure access sequences need to break the DRY...

Rust's standard library does not contain a proper argument parser (unlike argparse in Python), instead preferring to leave this to third-party crates. These examples will show the usage of both the standard library (to form a crude argument handler) and the clap library which can parse command-l...

#![feature(associated_consts)] const ID: i32; This feature is currently available only in nightly compiler. Tracking issue #29646

What does 'const member functions' of a class really means. The simple definition seems to be that, a const member function cannot change the object. But what does 'can not change' really means here. It simply means that you cannot do an assignment for class data members. However, you can do othe...

echo %cd% - displays the current path of the directory cd "C:\path\to\some\directory" -changes the path of the directory cd "%variable_containing_directory_path%" - also changes the path of the directory cd /d E: - change to E: drive from a different drive ...

This only works with projects using Swift 3+

Copy Constructor MyClass( const MyClass& other ); MyClass( MyClass& other ); MyClass( volatile const MyClass& other ); MyClass( volatile MyClass& other ); Assignment Constructor MyClass& operator=( const MyClass& rhs ); MyClass& operator=( MyClass& rhs ); My...

if(expression){} if(expression){}else{} if(expression){}elseif(expression){} if(expression){}elseif(expression){}else{} See also Comparison Operators, which can be used in conditional expressions.