Closures: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
|||
| Line 7: | Line 7: | ||
=Overview= | =Overview= | ||
A closure is an instance of a function that can reference non-local variables of that function with no restrictions.[[Java_8_Lambda_Expressions#Variable_Capture| Java 8 lambda expression]] are different, in that they can only refer final local variables in the scope in which the lambda was declared. | A closure is an instance of a function that can reference non-local variables of that function with no restrictions. This is where the name comes from, a closure '''closes around''' the data accessible in the lexical scope the function is <font size='darkkhaki'>is declared</font>. The closure can access the data when it executes. [[Go_Closures#Overview|Go closures]] behave this way. [[Java_8_Lambda_Expressions#Variable_Capture| Java 8 lambda expression]] are different, in that they can only refer final local variables in the scope in which the lambda was declared. | ||
Revision as of 18:17, 3 January 2024
Internal
Overview
A closure is an instance of a function that can reference non-local variables of that function with no restrictions. This is where the name comes from, a closure closes around the data accessible in the lexical scope the function is is declared. The closure can access the data when it executes. Go closures behave this way. Java 8 lambda expression are different, in that they can only refer final local variables in the scope in which the lambda was declared.