Rename lesson2 files and update slides for consistency

go.mod

@@ -1,3 +1,11 @@
 module github.com/RedHatOfficial/GoCourse
 
-go 1.17
+go 1.23.0
+
+toolchain go1.23.5
+
+require (
+	github.com/yuin/goldmark v1.4.13 // indirect
+	golang.org/x/net v0.43.0 // indirect
+	golang.org/x/tools v0.36.0 // indirect
+)

go.sum

@@ -0,0 +1,6 @@
+github.com/yuin/goldmark v1.4.13 h1:fVcFKWvrslecOb/tg+Cc05dkeYx540o0FuFt3nUVDoE=
+github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
+golang.org/x/net v0.43.0 h1:lat02VYK2j4aLzMzecihNvTlJNQUq316m2Mr9rnM6YE=
+golang.org/x/net v0.43.0/go.mod h1:vhO1fvI4dGsIjh73sWfUVjj3N7CA9WkKJNQm2svM6Jg=
+golang.org/x/tools v0.36.0 h1:kWS0uv/zsvHEle1LbV5LE8QujrxB3wfQyxHfhOk0Qkg=
+golang.org/x/tools v0.36.0/go.mod h1:WBDiHKJK8YgLHlcQPYQzNCkUxUypCaa5ZegCVutKm+s=

go_primer.slide

@@ -138,14 +138,14 @@ Red Hat, Inc.
 - pass to functions as value or via pointer (by reference)
 
 * Structs and dot operator
-.play lesson2/11_struct.go
+.play lesson2/12_struct.go
 
 * Comparison of whole structs is possible!
 - `==` and `!=` operators
-.play lesson2/14_struct_comparison.go /^func main/,/^}/
+.play lesson2/15_struct_comparison.go /^func main/,/^}/
 
 * Comparison of whole structs is possible! (cont.)
-.play lesson2/14_struct_comparison.go /^func main/,/^}/
+.play lesson2/15_struct_comparison.go /^func main/,/^}/
 
 * Arrays
 - basic data type in the Go programming language
@@ -158,7 +158,7 @@ Red Hat, Inc.
 
 * Array copy
 - unlike slices, arrays can be copied
-.play lesson2/17_array_copy.go
+.play lesson2/18_array_copy.go
 
 * Slices
 - proper data type in the Go programming language
@@ -174,7 +174,7 @@ Red Hat, Inc.
 
 * Usage of slices
 
-.play lesson2/21_slice_append.go
+.play lesson2/22_slice_append.go
 
 
 
@@ -184,7 +184,7 @@ Red Hat, Inc.
 - but the slice does not contain any data, just a pointer to array element
 - so any modify in slice element is reflected in an array as well
 
-.play lesson2/19_slice_copy.go /package main/,/cont//
+.play lesson2/20_slice_copy.go /package main/,/cont//
 
 * Pointers
 - always points to an element of some type
@@ -198,7 +198,7 @@ Red Hat, Inc.
 * Basic usage of pointers
 - please note the usage of `*p_i++`
 
-.play lesson2/22_pointer_to_int.go
+.play lesson2/23_pointer_to_int.go
 
 * Maps
 - a.k.a. associative array or hash

lesson2.slide

@@ -194,7 +194,7 @@ Outline:
 
 
 * Defer and existing app
-.play lesson2/on_finish.go
+.play lesson2/11_on_finish.go
 
 
 
@@ -214,7 +214,7 @@ Outline:
 
 
 * Structs and dot operator
-.play lesson2/11_struct.go
+.play lesson2/12_struct.go
 
 
 
@@ -226,7 +226,7 @@ Outline:
 
 
 * Initialization of struct members (cont.)
-.play lesson2/12_struct_init.go
+.play lesson2/13_struct_init.go
 
 
 
@@ -238,30 +238,30 @@ Outline:
 
 
 * Better (more explicit) initialization of struct members (cont.)
-.play lesson2/13_better_struct_init.go
+.play lesson2/14_better_struct_init.go
 
 
 
 * Comparison of whole structs is possible!
 - `==` and `!=` operators
-.play lesson2/14_struct_comparison.go /^func main/,/^}/
+.play lesson2/15_struct_comparison.go /^func main/,/^}/
 
 
 
 * Comparison of whole structs is possible! (cont.)
-.play lesson2/14_struct_comparison.go /^func main/,/^}/
+.play lesson2/15_struct_comparison.go /^func main/,/^}/
 
 
 
 * Passing structs as values into functions
 - by value
 - by reference (via pointer)
-.play lesson2/15_print_user.go /package main/,/^func main//
+.play lesson2/16_print_user.go /package main/,/^func main//
 
 
 
 * Passing structs as values into functions (cont.)
-.play lesson2/15_print_user.go /^func main/,/^}/
+.play lesson2/16_print_user.go /^func main/,/^}/
 
 
 * Struct embedding
@@ -292,18 +292,18 @@ Outline:
 
 
 * Basic operations with arrays
-.play lesson2/16_arrays.go
+.play lesson2/17_arrays.go
 
 
 
 * Matrix (two dimensional array)
-.play lesson2/16B_arrays.go
+.play lesson2/17B_arrays.go
 
 
 
 * Array copy
 - unlike slices, arrays can be copied
-.play lesson2/17_array_copy.go
+.play lesson2/18_array_copy.go
 
 
 
@@ -323,13 +323,13 @@ Outline:
 
 * Usage of slices
 
-.play lesson2/18_slices.go /package main/,/cont//
+.play lesson2/19_slices.go /package main/,/cont//
 
 
 
 * Usage of slices (cont.)
 
-.play lesson2/18_slices.go /cont/,/^}//
+.play lesson2/19_slices.go /cont/,/^}//
 
 
 
@@ -339,33 +339,33 @@ Outline:
 - but the slice does not contain any data, just a pointer to array element
 - so any modify in slice element is reflected in an array as well
 
-.play lesson2/19_slice_copy.go /package main/,/cont//
+.play lesson2/20_slice_copy.go /package main/,/cont//
 
 
 
 * Slices and arrays as data source for them (cont.)
 - modify array elements
 - then modify the same elements, but via slice
 
-.play lesson2/19_slice_copy.go /cont/,/^}//
+.play lesson2/20_slice_copy.go /cont/,/^}//
 
 
 
 * Slice from slice
 - "slicing" of another slice is possible
-.play lesson2/20_slice_from_slice.go /package main/,/cont//
+.play lesson2/21_slice_from_slice.go /package main/,/cont//
 
 
 
 * Slice from slice (cont.)
-.play lesson2/20_slice_from_slice.go /cont/,/^}//
+.play lesson2/21_slice_from_slice.go /cont/,/^}//
 
 
 
 * Append function
 - the function `append` returns a new slice
 - the capacity of new slice can be increased (realloc magic inside!)
-.play lesson2/21_slice_append.go
+.play lesson2/22_slice_append.go
 
 
 
@@ -383,49 +383,49 @@ Outline:
 * Basic usage of pointers
 - please note the usage of `*p_i++`
 
-.play lesson2/22_pointer_to_int.go
+.play lesson2/23_pointer_to_int.go
 
 
 
 * Pointer to structure
 
-.play lesson2/23_pointer_to_struct.go /package main/,/func main//
+.play lesson2/24_pointer_to_struct.go /package main/,/func main//
 
 
 
 * Pointer to structure (cont.)
 - please note the possibility to write `p_u.id` instead of `(*p_u).id`
-.play lesson2/23_pointer_to_struct.go /func main/,/^}//
+.play lesson2/24_pointer_to_struct.go /func main/,/^}//
 
 
 
 * Pointer to structure item/member
-.play lesson2/24_pointer_to_struct_item.go /package main/,/func main//
+.play lesson2/26_pointer_to_struct_item.go /package main/,/func main//
 
 
 
 * Pointer to structure item/member (cont.)
-.play lesson2/24_pointer_to_struct_item.go /func main/,/^}//
+.play lesson2/26_pointer_to_struct_item.go /func main/,/^}//
 
 
 
 * Pointer to array item
-.play lesson2/25_pointer_to_array.go /package main/,/cont//
+.play lesson2/26_pointer_to_array.go /package main/,/cont//
 
 
 
 * Pointer to array item (cont.)
-.play lesson2/25_pointer_to_array.go /cont/,/^}//
+.play lesson2/26_pointer_to_array.go /cont/,/^}//
 
 
 
 * Return pointer to local variable from C function
-.code lesson2/25_B_return_pointer.c
+.code lesson2/26_B_return_pointer.c
 
 
 
 * Return pointer to local variable from Go function
-.play lesson2/25_B_return_pointer.go
+.play lesson2/26_B_return_pointer.go
 
 
 
@@ -461,7 +461,7 @@ Outline:
 
 
 * Uninitialized map ("nil map")
-.play lesson2/26_uninitialized_map.go
+.play lesson2/27_uninitialized_map.go
 
 
 
@@ -471,27 +471,27 @@ Outline:
 
 
 * Empty map (int -> string)
-.play lesson2/27_initialized_map.go
+.play lesson2/28_initialized_map.go
 
 
 
 * Empty map (string -> int)
-.play lesson2/27_B_initialized_map.go
+.play lesson2/28_B_initialized_map.go
 
 
 
 * Empty map (shorter idiom)
-.play lesson2/28_initialized_map.go
+.play lesson2/29_initialized_map.go
 
 
 
 * Maps and struct
-.play lesson2/29_map_and_struct.go /^package main/,/^func main/
+.play lesson2/30_map_and_struct.go /^package main/,/^func main/
 
 
 
 * Maps and struct (cont.)
-.play lesson2/29_map_and_struct.go /^func main/,/^}/
+.play lesson2/30_map_and_struct.go /^func main/,/^}/
 
 
 

lesson2/28_initialized_map.go

@@ -3,7 +3,7 @@ package main
 import "fmt"
 
 func main() {
-	m1 := make(map[int]string)
+	var m1 map[int]string = make(map[int]string)
 	fmt.Println(m1)
 
 	m1[1] = "one"

lesson2/27_initialized_map.go → lesson2/29_initialized_map.go

@@ -3,7 +3,7 @@ package main
 import "fmt"
 
 func main() {
-	var m1 map[int]string = make(map[int]string)
+	m1 := make(map[int]string)
 	fmt.Println(m1)
 
 	m1[1] = "one"