It exists, but it’s hard to search for. I think most people call it the “splat” operator. It’s in the documentation as “Unpacking argument lists”. You’d use it like this for positional arguments: values = [1, 2] foo(*values) There’s also one for dictionaries to call with named arguments: d = {‘a’: 1, ‘b’: 2} def … Read more
Two more ways to do it (see my comment on the previous answer by @Tomasz Nurkiewicz): The first relies on the fact that the compiler simply won’t let you pass in something of the wrong type: when(a.method(any(Class.class))).thenReturn(b); You lose the exact typing (the Class<? extends A>) but it probably works as you need it to. … Read more
Like many of the others, I often prefer passing an options object to a function instead of passing a long list of parameters, but it really depends on the exact context. I use code readability as the litmus test. For instance, if I have this function call: checkStringLength(inputStr, 10); I think that code is quite … Read more
Parameters are the things defined by functions as input, arguments are the things passed as parameters. void foo(int bar) { … } foo(baz); In this example, bar is a parameter for foo. baz is an argument passed to foo.
The number of arguments is $# Search for it on this page to learn more: http://tldp.org/LDP/abs/html/internalvariables.html#ARGLIST
I would propose changing the function declaration as follows so you can do what you want: function foo($blah, $x = null, $y = null) { if (null === $x) { $x = “some value”; } if (null === $y) { $y = “some other value”; } code here! } This way, you can make a … Read more
Windows, Linux, some Macs: ALT+SHIFT+F10, Right, E, Enter, Tab, enter your command line parameters, Enter. 😉 Mac with “OS X 10.5” key schema: CTRL+ALT+R, Right, E, Enter, Tab, enter your command line parameters, Enter.
You cannot overload PHP functions. Function signatures are based only on their names and do not include argument lists, so you cannot have two functions with the same name. Class method overloading is different in PHP than in many other languages. PHP uses the same word but it describes a different pattern. You can, however, … Read more
In javascript you can call a function (even if it has parameters) without parameters. So you can add default values like this: function func(a, b){ if (typeof(a)===’undefined’) a = 10; if (typeof(b)===’undefined’) b = 20; //your code } and then you can call it like func(); to use default parameters. Here’s a test: function func(a, … Read more
_tmain does not exist in C++. main does. _tmain is a Microsoft extension. main is, according to the C++ standard, the program’s entry point. It has one of these two signatures: int main(); int main(int argc, char* argv[]); Microsoft has added a wmain which replaces the second signature with this: int wmain(int argc, wchar_t* argv[]); … Read more