Golang variables: Difference between revisions
From wikinotes
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</blockquote><!-- Immutable --> | </blockquote><!-- Immutable --> | ||
</blockquote><!-- Mutability --> | </blockquote><!-- Mutability --> | ||
= Scope = | |||
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</blockquote><!-- Scope --> |
Revision as of 18:02, 29 May 2022
Assignment
// declare and assign variable var name string name = "foo" // declare and assign var in one step var name string = "foo" // declare and assign variable, inferring type name := "foo"
Type Conversion
float32(123) == 123. // cast int as float32 string(107) == "k" // retrieve char for 107 in ascii chart strconv.Itoa(107) == "107" // represent 107 as string
Introspection
fmt.Prinf("%T\n", myVar) // print type of myVar
Mutability
Mutable
- Arrays - Maps - Channels - StructsImmutable
- Interfaces - Booleans - Numeric Types - Strings - Pointers