Why go through the trouble of Array.apply(null, {length: N}) instead of just Array(N)? After all, both expressions would result an an N -element array of undefined elements. The difference is that …

Dec 10, 2009 · To clarify the above comment, the issue with the question is that there is no such thing as "Unix shell [scripting]". Instead, there are multiple shells, with a POSIX-compatible …

May 25, 2017 · The OP was asking 'Array.size () vs Array.length'. From the previous discussions, it was make clear, that the 'size' Function is not part of standard JavaScript but implemented …

Dec 17, 2009 · This will default-initialize an array of any type (assuming the elements allow default initialization), which means that for basic (scalar) types the entire array will be properly …

I have a JavaScript array dataArray which I want to push into a new array newArray. Except I don't want newArray[0] to be dataArray. I want to push in all the items into the new array: var …

Oct 15, 2010 · Specifically, for..in loops through the enumerable property names of an object (not the indexes of an array). Since arrays are objects, and their only enumerable properties by …

May 1, 2013 · Use a for loop and iterate over the target array. If every element is contained within the current array (use current.indexOf(elem) !== -1), then they're all in there.

If you want to remove objects from an array that have exactly the same properties and values as other objects in the array, you would need to write a custom equality checking function to …

You can request value initialization quite easily in C++11 by giving each declaration an empty initializer: int plain_int{}; int c_style_array[13]{}; std::array<int, 13> cxx_style_array{}; Which will …

Feb 26, 2013 · What are the differences between an array and a vector in C++? An example of the differences might be included libraries, symbolism, abilities, etc. Array Arrays contain a …