...no run-time checks for common errors such as null-pointer dereferencing or array bounds overflow. Strictly speaking, most dynamically-typed languages — such as Perl, Python, PHP and Ruby — are also managed code. However, they are not commonly described as such, which shows that managed code is ...

...'string'.charAt(0) or 'string'.split('')[0] noting that accessing items in arrays is significantly faster than using charAt with strings in IE (though there's some initial overhead when split is first called.) Commas before the end of objects: e.g. {'foo': 'bar',} aren't allowed in IE. Element-s...

...lled, because it can return and the function could theoretically assign an array of food items from anywhere. We need to make sure that it is called; share | improve this answer | ...

...good when you always need the same initial value (like in your example, an array of given size, or integer of specific value), but it can work in your favour or against you: If you have many constructors that initialise variables differently (i.e. with different values), then initialisers are usele...

... @NeilN Python's array.sort(key=f) is stable, which means (for example) that simply sorting an alphabetical word list by length would keep all the 8-letter words alphabetically sorted. – Lynn Apr 12 '19 ...

...ading the constructor one: Does the standard mandate that each item in the array be constructed in sequence? It would matter if the constructor had side effects. I'm sure every sane compiler implements it as a 0->1000 loop but I wonder if you could still be compliant and loop backwards... ...

...ts parts of the CLR spec that even Microsoft does not support (like 64 bit arrays). One of the most exciting new pieces of technology in the .NET world is Rosylyn. Mono has offered the C# compiler as a service for many years. Some of what Rosylyn offers is available via NRefractory as well. An examp...

...n, i) => n * i); console.log(b.join(", ")); // 0, 2, 6 (Remember that Array#map passes the entry as the first argument, and the index as the second.) In both cases, the body of the function is just an expression; the function's return value will automatically be the result of that expression (...

...typeof cats.getAllCats ).toEqual("function"); }); it(' returns an array of Cats, where each cat has a NAME, TITLE and SCORE', function() { cats.getAllCats().then(function(data) { var names = _.map(data, function(cat) { return cat.name; }) var titles = _.map(data, funct...

...mber of zeroes and ones, not the count of ones (which could be given as an array, like [1,5,9,15]). Checking if a set has an arithmetic progression, terms of number of 1's, is hard, and according to that paper as of 1999 no faster algorithm than O(n2) is known, and is conjectured that it doesn't exi...