Here are the possible ways to take a unique pointer as an argument, as well as their associated meaning. (A) By Value Base(std::unique_ptr<Base> n) : next(std::move(n)) {} In order for the user to call this, they must do one of the following: Base newBase(std::move(nextBase)); Base fromTemp(std::unique_ptr<Base>(new Base(…)); To take a unique pointer by value means … Read more
Sure, just use the arguments object. function foo() { for (var i = 0; i < arguments.length; i++) { console.log(arguments[i]); } }
You could use the default-value syntax: somecommand ${1:-foo} The above will, as described in Bash Reference Manual – 3.5.3 Shell Parameter Expansion [emphasis mine]: If parameter is unset or null, the expansion of word is substituted. Otherwise, the value of parameter is substituted. If you only want to substitute a default value if the parameter … Read more
A parameter is the variable which is part of the method’s signature (method declaration). An argument is an expression used when calling the method. Consider the following code: void Foo(int i, float f) { // Do things } void Bar() { int anInt = 1; Foo(anInt, 2.0); } Here i and f are the parameters, … Read more
I would just raise ValueError, unless you need a more specific exception.. def import_to_orm(name, save=False, recurse=False): if recurse and not save: raise ValueError(“save must be True if recurse is True”) There’s really no point in doing class BadValueError(ValueError):pass – your custom class is identical in use to ValueError, so why not use that?
Your logic fails if optionalArg is passed, but evaluates as false – try this as an alternative if (typeof optionalArg === ‘undefined’) { optionalArg = ‘default’; } Or an alternative idiom: optionalArg = (typeof optionalArg === ‘undefined’) ? ‘default’ : optionalArg; Use whichever idiom communicates the intent best to you!
A parameter is a variable in a method definition. When a method is called, the arguments are the data you pass into the method’s parameters. public void MyMethod(string myParam) { } … string myArg1 = “this is my argument”; myClass.MyMethod(myArg1);
There are two typical ways of declaring a function. I prefer the second approach. function function_name { command… } or function_name () { command… } To call a function with arguments: function_name “$arg1” “$arg2” The function refers to passed arguments by their position (not by name), that is $1, $2, and so forth. $0 is … Read more
Another useful tip is to use %* to mean “all”. For example: echo off set arg1=%1 set arg2=%2 shift shift fake-command /u %arg1% /p %arg2% %* When you run: test-command admin password foo bar The above batch file will run: fake-command /u admin /p password admin password foo bar I may have the syntax slightly … Read more
Bash Space-Separated (e.g., –option argument) cat >/tmp/demo-space-separated.sh <<‘EOF’ #!/bin/bash POSITIONAL_ARGS=() while [[ $# -gt 0 ]]; do case $1 in -e|–extension) EXTENSION=”$2″ shift # past argument shift # past value ;; -s|–searchpath) SEARCHPATH=”$2″ shift # past argument shift # past value ;; –default) DEFAULT=YES shift # past argument ;; -*|–*) echo “Unknown option $1” exit … Read more