Inner loop

In computer programs, an important form of control flow is the loop which causes a block of code to be executed more than once. A common idiom is to have a loop nested inside another loop, with the contained loop being commonly referred to as the inner loop. This is significant because the block within the inner loop will be executed by far the most times, so optimizations for the inner loop will have much more effect on the overall execution than program.

Inner loop (disambiguation)

Inner loop may refer to:

Inner Loop (Washington, D.C.)

The Inner Loop was two planned freeways around downtown Washington, D.C. The innermost loop would have formed an oval centered on the White House, with a central freeway connecting the southern segment to the northern segment and then continuing on to Interstate 95. Interstate 95 would have met Interstate 66, Interstate 295, Interstate 695, and US 50 while traversing the Inner Loop. A second loop was an arc across the northern section of the city, beginning at East Capitol Street at the Anacostia River and utilizing the Missouri Avenue NW and Nebraska Avenue NW commercial corridors to terminate in Georgetown.

History and proposed loops

In 1956, federal and regional transportation planners proposed an Inner Loop Expressway composed of three circumferential beltways for the District of Columbia. The majority of the innermost loop would have been a minimum of six lanes, with the portions used by I-95 having a minimum of eight lanes. The final design for the innermost loop made heavy use of cut-and-cover tunnels in order to minimize impacts to the city; one notable example that was built is the tunnel under the National Mall, between C Street SW and D Street NW, used by the Interstate 395.