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Update 02.2.md

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It is not possible to use vname1 := "hello" in var() declaration
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Tomas Roos
2015-09-01 13:51:28 +02:00
parent d71a2557d6
commit 5ab5fc06e1
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@@ -45,7 +45,7 @@ Well, I know this is still not simple enough for you. Let's see how we fix it.
*/
vname1, vname2, vname3 := v1, v2, v3
Now it looks much better. Use `:=` to replace `var` and `type`, this is called a brief statement. But wait, it has one limitation: this form can only be used inside of functions. You will get compile errors if you try to use it outside of function bodies. Therefore, we usually use `var` to define global variables and we can use this brief statement in `var()`.
Now it looks much better. Use `:=` to replace `var` and `type`, this is called a brief statement. But wait, it has one limitation: this form can only be used inside of functions. You will get compile errors if you try to use it outside of function bodies. Therefore, we usually use `var` to define global variables.
`_` (blank) is a special variable name. Any value that is given to it will be ignored. For example, we give `35` to `b`, and discard `34`.( ***This example just show you how it works. It looks useless here because we often use this symbol when we get function return values.*** )