colon-equals

This question already has answers here : Closed 8 years ago . Possible Duplicate: What is the use of the := syntax? I've tried hunting down the MDSN documentation for := in VB.NET as well as scoured Google only to be linked to a dead MSDN page... What would the purpose of := be? Alex K. It strongly names arguments, allowing you to call a method with arguments in an order other than that specified in the method definition. For example: sub foo (byval x As Long, byval y As Long) debug.print (String.Format("{0}, {1}", x.ToString, y.ToString)) end Function can be called with the order of the

What's the difference between :- and := in Bash parameter substitution? They seem to both set the default? Quoting Bash Reference Manual : ${parameter:-word} If parameter is unset or null, the expansion of word is substituted. Otherwise, the value of parameter is substituted. ${parameter:=word} If parameter is unset or null, the expansion of word is assigned to parameter . The value of parameter is then substituted. Positional parameters and special parameters may not be assigned to in this way. The difference is that := doesn't only substitute the word , it also assigns it to the parameter :

In Go, what is the difference between the = and := operator? They both seem to be for assignment? This might be obvious but I can't seem to find it in the docs. zzzz Only = is the assignment operator. := is a part of the syntax of the Short variable declarations clause. Chaos In Go, := is for declaration + assignment, whereas = is for assignment only. For example, var foo int = 10 is the same as foo := 10 . As others have explained already, := is for both declaration, assignment, and also for redeclaration; and it guesses ( infer ) the variable's type automatically. It's a short-hand form of:

I am new to Go programming language. I noticed something strange in Go: I thought that it used := and substitutes = in Python, but when I use = in Go it is also works. What is the difference between := and = ? simon_xia = is assignment. more about assignment in Go: Assignments the subtly difference between = and := is when = used in variable declarations. General form of variable declaration in Go is: var name type = expression the above declaration creates a variable of a particular type, attaches a name to it, and sets its initial value. Either the type or the = expression can be omitted,

I see this from time to time and want to know what it is. I did try google, but its filtering out the characters from the search. I have a few books that don't reference it either. FWIW, I remember in pascal that is was the assignment operator. Can anybody point me to the MSDN or similar page? You can use the := syntax to assign the parameters to a Sub or Function by name, rather than strictly by position. For example: Public Class Form1 Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load TestRoutine(Y:="TestString", X:=12) End Sub Private Sub