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Since 2010, Emirates is the largest Boeing 777 operator, with 152 aircraft; [17] the carrier began phasing out older −200s, −200ERs and −300s in February 2011. [18] Other primary operators are United Airlines (96), Qatar Airways (81), Air France (70), American Airlines (67), and Cathay Pacific (65). As of November 2011, 62 airline ...
Python sets are very much like mathematical sets, and support operations like set intersection and union. Python also features a frozenset class for immutable sets, see Collection types. Dictionaries (class dict) are mutable mappings tying keys and corresponding values. Python has special syntax to create dictionaries ({key: value})
A 777F of FedEx Express, the largest operator of the type. The 777 Freighter (777F) is an all-cargo version of the twinjet, and shares features with the -200LR; these include its airframe, engines, [201] and fuel capacity. [148] The 777F is unofficially referred to as 777-200LRF by some cargo airlines. [202]
The title of largest 777 operator has changed hands during the aircraft's history. Singapore Airlines' order for up to 77 aircraft on November 15, 1995 constituted the largest-ever wide-body aircraft purchase at the time. [1]
For example, a function that tests for greater-than could be named gt, but many languages provide an infix symbolic operator so that code looks more familiar. For example, this: if gt(x, y) then return. Can be: if x > y then return. Some languages allow a language-defined operator to be overridden with user-defined behavior and some allow for ...
The first mention of an operator is the third paragraph, but only to tell us who ordered one of the planes first. Some information may be necessary, but most seems like it belongs at Boeing 777. Focus instead on some of the operators. Why did they chose this aircraft over the A330? Do they have long-standing purchase orders with Boeing over Airbus?
A block is a grouping of code that is treated collectively. Many block syntaxes can consist of any number of items (statements, expressions or other units of code) – including one or zero. Languages delimit a block in a variety of ways – some via marking text and others by relative formatting such as levels of indentation.
Calling f with a regular function argument first applies this function to the value 2, then returns 3. However, when f is passed to call/cc (as in the last line of the example), applying the parameter (the continuation) to 2 forces execution of the program to jump to the point where call/cc was called, and causes call/cc to return the value 2.