Static vs Dynamic Typing

Which type of language requires explicit definition of a data type when creating a piece of data?

At which stage is type information acquired in static typing?

Which type of typing checks the types of values during execution and might cause an error at run time?

Which type of typing requires explicit definition of a data type when creating a piece of data?

Which type of typing checks the types of values during execution and might cause an error at run time?

In which type of typing is the type information acquired at compile time?

Which type of typing allows the type to be changed with the value associated rather than the variable?

Which type of typing is used in languages like Java, C, C++, and C#?

Which type of typing is used in languages like PERL, PHP, Python, JavaScript, and Ruby?

What is the primary reason for static typing?

What happens when a variable is set to a type in a statically typed language?

In Python, what happens when a variable is assigned different values?

Types of Typing in Programming

Static Typing: Requires explicit definition of a data type when creating a piece of data. Example languages: Java, C, C++, C#.
Dynamic Typing: Does not require explicit data type declaration; types are inferred at runtime. Example languages: PERL, PHP, Python, JavaScript, Ruby.

Stages of Type Information Acquisition

In Static Typing, type information is acquired at compile time, allowing for early error detection.
Dynamic Typing acquires type information at runtime, which can lead to runtime errors if types do not match expected values.

Timing of Type Checks

Dynamic Typing checks types of values during execution, potentially leading to runtime errors if type mismatches occur.
Static Typing checks types at compile time, ensuring type correctness before the program runs.

Modifiability of Types

In Dynamic Typing, the type can change with the value associated rather than being fixed to the variable.

Reasons for Using Static Typing

Primary reason for static typing is to catch type-related errors during the compilation process, enhancing code reliability and optimizing performance.

Variable Behavior in Typed Languages

In statically typed languages, when a variable is set to a type, its type remains associated with the variable throughout its scope.
In dynamically typed languages like Python, when a variable is assigned different values, it can change types seamlessly, allowing for greater flexibility in coding.

Test your knowledge of static and dynamic data typing with this quiz! Learn about the differences between static and dynamic typed languages and how they handle data types.