Re: [go-nuts] This Makes No Sense

[Michael Jones]

uh oh. ;-)

On Tue, Jan 22, 2019 at 12:14 PM Bakul Shah  wrote:

> This is kind of like tic-tac-toe! The first player has an advantage.
> Gomoku's swap2 rule makes it fairer and more interesting!
>
> Also a good game to practice writing alpha-beta pruning search (for
> playing with a computer)!
>
> Representing the board as two sets of n^2 bitmaps would speed things up
> and allow searching more plys (turns) ahead in a given time period. Two
> because you need to represent black, white, empty states for each square.
> Sets make it easier/faster to check for "better" placements.
>
> I think Marcus is really talking about checking for valid row, column
> numbers[1]. But this valid row/column index problem can be trivially solved
> by simply doing a modulo operation! That is, if the user types 45, 45,
> treat it as if he typed 1, 1 (for a 15x15 board, rows and columns are
> numbered 0..14).
>
> [1] I suspect this is a homework problem.
>
> On Jan 22, 2019, at 11:37 AM, Michael Jones 
> wrote:
>
> I could not decode the question, so I just wrote a program to do it all.
> John, does this help?
> Change the constants for whatever board geometry and n-in-a-row victory
> rule you want.
>
> https://play.golang.org/p/JtouiOlkGCO
>
> P.S. the progression from 3 to 4 to 5 in a row is a great way to teach
> kids important mental skills.
>
> On Tue, Jan 22, 2019 at 7:39 AM Marcus Low  wrote:
>
>> I meant "constant *space* overhead", sorry.
>>
>> On Tuesday, January 22, 2019 at 11:38:02 PM UTC+8, Marcus Low wrote:
>>>
>>> As Justin Israel said, you can probably scan them to int and test them
>>> as ints.
>>>
>>> However, if you *really* need them to be parsed as string, this will
>>> help your runtime, at the cost of constant overhead:
>>> var (
>>>   valueSet = map[string]struct{}{
>>> "1":nil,
>>> "2":nil,
>>> "3":nil,
>>> 
>>> "15":nil,
>>>   }
>>> )
>>>
>>> func checkValue(s string) bool {
>>>   _, ok := valueSet[s]
>>>   return ok
>>> }
>>>
>>> func fix() {
>>>   if checkValue(x) {
>>> 
>>>   }
>>>   
>>> }
>>>
>>>
>>>
>>> On Tuesday, January 22, 2019 at 6:40:52 AM UTC+8, John wrote:

 Dear Gophers,

 I have recently made a project of Connect Five. When the imput is wrong
 it will have a goroutine problem that says something about out of index, as
 my game win function depends on if the x = b and x+1 = b and so on. But if
 the imput is not 1,2 1,3 and so on, or it is over 15, 15 it will be wrong.
 I made a solution of creating a function like this:

 func fix() {
 if x == "1"|| x == "2"|| x == "3"|| x == "4"|| x == "5"|| x == "6"|| x
 == "7"|| x == "8"|| x == "9"|| x == "10"|| x == "11"|| x == "12"|| x ==
 "13"|| x == "14"|| x == "15" {
 if y == "1"|| y == "2"|| y == "3"|| y == "4"|| y == "5"|| y == "6"|| y
 == "7"|| y == "8"|| y == "9"|| y == "10"|| y == "11"|| y == "12"|| y ==
 "13"|| y == "14"|| y == "15" {
 blwi()
 }  else {
 showBoard()
 fmt.Println("Sorry you had entered wrong please enter again")
 fmt.Scanln(,)
 fix()
 }
 }

 It for some reason won't work. So I wonder if any of you can help me
 correct the function and simplify it. (it goes right between the imput and
 the win function.)



>>>
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>
>
> --
>
> *Michael T. jonesmichael.jo...@gmail.com *
>
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-- 

*Michael T. jonesmichael.jo...@gmail.com *

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Re: [go-nuts] This Makes No Sense

[Bakul Shah]

This is kind of like tic-tac-toe! The first player has an advantage. Gomoku's 
swap2 rule makes it fairer and more interesting!

Also a good game to practice writing alpha-beta pruning search (for playing 
with a computer)!

Representing the board as two sets of n^2 bitmaps would speed things up and 
allow searching more plys (turns) ahead in a given time period. Two because you 
need to represent black, white, empty states for each square. Sets make it 
easier/faster to check for "better" placements.

I think Marcus is really talking about checking for valid row, column 
numbers[1]. But this valid row/column index problem can be trivially solved by 
simply doing a modulo operation! That is, if the user types 45, 45, treat it as 
if he typed 1, 1 (for a 15x15 board, rows and columns are numbered 0..14).

[1] I suspect this is a homework problem.

> On Jan 22, 2019, at 11:37 AM, Michael Jones  wrote:
> 
> I could not decode the question, so I just wrote a program to do it all. 
> John, does this help? 
> Change the constants for whatever board geometry and n-in-a-row victory rule 
> you want.
> 
> https://play.golang.org/p/JtouiOlkGCO 
> 
> P.S. the progression from 3 to 4 to 5 in a row is a great way to teach kids 
> important mental skills. 
> 
> On Tue, Jan 22, 2019 at 7:39 AM Marcus Low  > wrote:
> I meant "constant space overhead", sorry.
> 
> On Tuesday, January 22, 2019 at 11:38:02 PM UTC+8, Marcus Low wrote:
> As Justin Israel said, you can probably scan them to int and test them as 
> ints.
> 
> However, if you really need them to be parsed as string, this will help your 
> runtime, at the cost of constant overhead:
> var (
>   valueSet = map[string]struct{}{
> "1":nil,
> "2":nil,
> "3":nil,
> 
> "15":nil,
>   }
> )
> 
> func checkValue(s string) bool {
>   _, ok := valueSet[s]
>   return ok
> }
> 
> func fix() {
>   if checkValue(x) {
> 
>   }
>   
> }
> 
> 
> 
> On Tuesday, January 22, 2019 at 6:40:52 AM UTC+8, John wrote:
> Dear Gophers,
> 
> I have recently made a project of Connect Five. When the imput is wrong it 
> will have a goroutine problem that says something about out of index, as my 
> game win function depends on if the x = b and x+1 = b and so on. But if the 
> imput is not 1,2 1,3 and so on, or it is over 15, 15 it will be wrong. I made 
> a solution of creating a function like this: 
> 
> func fix() {
>   if x == "1"|| x == "2"|| x == "3"|| x == "4"|| x == "5"|| x == "6"|| x 
> == "7"|| x == "8"|| x == "9"|| x == "10"|| x == "11"|| x == "12"|| x == 
> "13"|| x == "14"|| x == "15" {
>   if y == "1"|| y == "2"|| y == "3"|| y == "4"|| y == "5"|| y == 
> "6"|| y == "7"|| y == "8"|| y == "9"|| y == "10"|| y == "11"|| y == "12"|| y 
> == "13"|| y == "14"|| y == "15" {
>   blwi()
>   }  else {
>   showBoard()
>   fmt.Println("Sorry you had entered wrong please enter 
> again")
>   fmt.Scanln(,)
>   fix()
>   }
> }
> 
> It for some reason won't work. So I wonder if any of you can help me correct 
> the function and simplify it. (it goes right between the imput and the win 
> function.)
>   
>  
> 
> -- 
> You received this message because you are subscribed to the Google Groups 
> "golang-nuts" group.
> To unsubscribe from this group and stop receiving emails from it, send an 
> email to golang-nuts+unsubscr...@googlegroups.com 
> .
> For more options, visit https://groups.google.com/d/optout 
> .
> 
> 
> -- 
> Michael T. Jones
> michael.jo...@gmail.com 
> 
> -- 
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Re: [go-nuts] This Makes No Sense

[Justin Israel]

On Tue, Jan 22, 2019 at 11:40 AM John  wrote:

> Dear Gophers,
>
> I have recently made a project of Connect Five. When the imput is wrong it
> will have a goroutine problem that says something about out of index, as my
> game win function depends on if the x = b and x+1 = b and so on. But if the
> imput is not 1,2 1,3 and so on, or it is over 15, 15 it will be wrong. I
> made a solution of creating a function like this:
>
> func fix() {
> if x == "1"|| x == "2"|| x == "3"|| x == "4"|| x == "5"|| x == "6"|| x ==
> "7"|| x == "8"|| x == "9"|| x == "10"|| x == "11"|| x == "12"|| x == "13"||
> x == "14"|| x == "15" {
> if y == "1"|| y == "2"|| y == "3"|| y == "4"|| y == "5"|| y == "6"|| y ==
> "7"|| y == "8"|| y == "9"|| y == "10"|| y == "11"|| y == "12"|| y == "13"||
> y == "14"|| y == "15" {
> blwi()
> }  else {
> showBoard()
> fmt.Println("Sorry you had entered wrong please enter again")
> fmt.Scanln(,)
> fix()
> }
> }
>
> It for some reason won't work. So I wonder if any of you can help me
> correct the function and simplify it. (it goes right between the imput and
> the win function.)
>

You don't have an "else" case if the x value is out of bounds; it only
handles the y value error condition.

Also, it would be a lot more simple if you were dealing with ints instead
of strings:

func fix(x, y int) {
if 1 > x || x > 15 {
handleError()
}
if 1 > y || y > 15 {
handleError()
}
proceed()
}

You could always scan them to ints and test them as ints, and then convert
to string if your app logic needs it.


>
>
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[go-nuts] This Makes No Sense

[John]

Dear Gophers,

I have recently made a project of Connect Five. When the imput is wrong it 
will have a goroutine problem that says something about out of index, as my 
game win function depends on if the x = b and x+1 = b and so on. But if the 
imput is not 1,2 1,3 and so on, or it is over 15, 15 it will be wrong. I 
made a solution of creating a function like this: 

func fix() {
if x == "1"|| x == "2"|| x == "3"|| x == "4"|| x == "5"|| x == "6"|| x == 
"7"|| x == "8"|| x == "9"|| x == "10"|| x == "11"|| x == "12"|| x == "13"|| 
x == "14"|| x == "15" {
if y == "1"|| y == "2"|| y == "3"|| y == "4"|| y == "5"|| y == "6"|| y == 
"7"|| y == "8"|| y == "9"|| y == "10"|| y == "11"|| y == "12"|| y == "13"|| 
y == "14"|| y == "15" {
blwi()
}  else {
showBoard()
fmt.Println("Sorry you had entered wrong please enter again")
fmt.Scanln(,)
fix()
}
}

It for some reason won't work. So I wonder if any of you can help me 
correct the function and simplify it. (it goes right between the imput and 
the win function.)
  
 

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