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Assume that i have a function like this below It takes 3 parameters and 2 have optional values
private void myfunc (int a, int b=2, int c=3) { //do some stuff here related to a,b,c } now i want to call this function like below how possible ?
myfunc(3,,5) So i want it to use default parameter b=2
But it is giving error that way.
Here the error message
Argument missing C# 4.5
272
One more ways we can implement optional parameters is using method overloading. Method overloading allows us to create multiple definitions of same method with different parameters. If you're new to method overloading, read Method Overloading In C#.
To omit one optional parameter, while providing another in a TypeScript function, pass an undefined value for the optional parameter you want to omit and provide the value for the next, e.g. logArguments(100, undefined, ['a', 'b', 'c']) . Copied!
To declare optional function parameters in JavaScript, there are two approaches: Using the Logical OR operator ('||'): In this approach, the optional parameter is Logically ORed with the default value within the body of the function. Note: The optional parameters should always come at the end on the parameter list.
The thing with optional parameters is, they are BAD because they are unintuitive - meaning they do NOT behave the way you would expect it. Here's why: They break ABI compatibility ! so you can change the default-arguments at one place.
You need to use named parameters, like so:
myfunc(a, c:5); If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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