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Why functional languages? [closed]
...m in normal programming because we're getting more and more multiprocessor computers; and the languages are getting more accessible.
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How to merge dictionaries of dictionaries?
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What is this Javascript “require”?
...pository service that hosts published JavaScript modules. npm install is a command that lets you download packages from their repository.
Where did it put it, and how does Javascript find it?
The npm cli puts all the downloaded modules in a node_modules directory where you ran npm install. No...
Best way to allow plugins for a PHP application
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You could use an Observer pattern. A simple functional way to accomplish this:
<?php
/** Plugin system **/
$listeners = array();
/* Create an entry point for plugins */
function hook() {
global $listeners;
$num_args = func_num_args();
$args = func_get_args();
if($...
What techniques can be used to define a class in JavaScript, and what are their trade-offs?
.../ alerts "Howdy, my name is Bob"
Now the real answer is a whole lot more complex than that. For instance, there is no such thing as classes in JavaScript. JavaScript uses a prototype-based inheritance scheme.
In addition, there are numerous popular JavaScript libraries that have their own style...
How can I use pointers in Java?
...leo = new Lion();
Tiger tony = (Tiger)leo; // Always illegal and caught by compiler.
Animal whatever = new Lion(); // Legal.
Tiger tony = (Tiger)whatever; // Illegal, just as in previous example.
Lion leo = (Lion)whatever; // Legal, object whatever really is a Lion.
Pointers in C:
void main()...
Get last n lines of a file, similar to tail
...d version of the code above and came up with this recipe: code.activestate.com/recipes/577968-log-watcher-tail-f-log
– Giampaolo Rodolà
Nov 29 '11 at 19:32
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App Inventor 2 中的响应式设计 · App Inventor 2 中文网
...size. Making apps that have this property is called responsive design.
A common approach to responsive design is to build apps that include multiple layouts and multiple images to accommodate different screen sizes and resolutions. This gives good results, but it makes more work for developers. ...
Explain Morris inorder tree traversal without using stacks or recursion
...s with its right subtree, which is B.
B prints itself, and then current becomes X, which goes through the same checking process as Y did, also realizing that its left subtree has been traversed, continuing with the Z. The rest of the tree follows the same pattern.
No recursion is necessary, becaus...
Why is enum class preferred over plain enum?
I heard a few people recommending to use enum classes in C++ because of their type safety .
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