You can just declare a regular array like so: var arry = []; Then when you have a pair of values to add to the array, all you need to do is: arry.push([value_1, value2]); And yes, the first time you call arry.push, the pair of values will be placed at index 0. From the nodejs … Read more
var id = “id” + Math.random().toString(16).slice(2)
UPDATE: Below answer was written in 2012, before the introduction of C# 7.3 (May 2018). In What’s new in C# 7.3, the section Improved overload candidates, item 1, it is explained how the overload resolution rules have changed so that non-static overloads are discarded early. So the below answer (and this entire question) has mostly … Read more
dynamic is a type underlying all Dart objects. You shouldn’t need to explicitly use it in most cases. var is a keyword, meaning “I don’t care to notate what the type is here.” Dart will replace the var keyword with the initializer type, or leave it dynamic by default if there is no initializer. Use … Read more
Options #1 and #2 are going to be your most immediate straight forward options, however, for both options, you’re going to feel the performance and maintenance impact by either building strings or creating DOM objects. Templating isn’t all that immature, and you’re seeing it popup in most of the major Javascript frameworks. Here’s an example … Read more
Contrary to other answers already posted you cannot modify locals() directly and expect it to work. >>> def foo(): lcl = locals() lcl[‘xyz’] = 42 print(xyz) >>> foo() Traceback (most recent call last): File “<pyshell#6>”, line 1, in <module> foo() File “<pyshell#5>”, line 4, in foo print(xyz) NameError: global name ‘xyz’ is not defined Modifying … Read more
From Python 2.7 you can use the importlib.import_module() function. You can import a module and access an object defined within it with the following code: from importlib import import_module p, m = name.rsplit(‘.’, 1) mod = import_module(p) met = getattr(mod, m) met()
What you want to do is called dynamic dispatch. It’s very easy in Ruby, just use public_send: method_name=”foobar” obj.public_send(method_name) if obj.respond_to? method_name If the method is private/protected, use send instead, but prefer public_send. This is a potential security risk if the value of method_name comes from the user. To prevent vulnerabilities, you should validate which … Read more
if the name of the property is stored in a variable, use [] foo[method]();
Yes: use ArrayList. In Java, “normal” arrays are fixed-size. You have to give them a size and can’t expand them or contract them. To change the size, you have to make a new array and copy the data you want – which is inefficient and a pain for you. Fortunately, there are all kinds of … Read more