Statically vs dynamically typed languages

Float - In a dynamically-typed language, a variable's type may change during execution. Thus, x's type becomes a float, and x will hold 3.14.

In a dynamically-typed language, a variable x is declared as an integer type. Later, x is assigned with 3.14, after which x's type is _____.

will not - A programmer may wish to receive many kinds of user input, and thus may want a variable's type to adjust according to the kind of input. A dynamically-typed language allows a variable's type to change. In a statically-typed language, a programmer would need to use multiple variables, each of a different type

In a dynamically-typed language, if a programmer assigns integer variable userInput with "Hello there", an error ___ usually be reported.

Integer - In a statically-typed language, a variable's type doesn't change during execution. Thus, x's type remains integer. Type conversion rules would just assign x with 3, ignoring the .14 part.

In a statically-typed language, a variable x is declared as an integer type. Later, x is assigned with 3.14, after which x's type is _____. an integer a float

will - Assigning an integer with a string is not supported in a statically-typed language. Because no implicit conversion exists for string-to-integer, a compiler would likely report an error, failing to generate an executable.

In a statically-typed language, if a programmer assigns integer variable numPeople with "Hello there", an error ___ usually be reported.

statically typed

Most compiled languages are ______, meaning each variable's type must be declared and cannot change while the program runs. ("Static" means unchanging).

safer

Statically-typed languages are often considered ___ due to reporting errors during compilation (like if assigning an integer with a string)

dynamically typed

many interpreted languages are ____, meaning a variable's type may change while a program executes, usually based on what is assigned to the variable. ("Dynamic" means changing).

False - The programming community continues to debate which is better. For example, many people believe static typing is safer and thus yields fewer bugs, but others believe the flexibility of dynamic typing makes programs simpler and thus reduces bugs that way.

Dynamically-typed languages are better than statically-typed languages.

easier to use

dynamically-typed languages are considered ____ when types need to change, requiring less converting or fewer variables.