Concatenate string to int

General
,
1

Hi all! I want to save value under the key “string_1”, where the string is a constant suffix and 1 comes from the counter. The following code:

byte "MyCounter"
app_global_get
int 1
+ // incriment
store 0

byte "string_" // suffix
load 0
itob // convert to byte
concat
int 6
btoi
app_global_put

Writes data like this:

"string_\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0001": {
    "tt": 2,
    "ui": 6
 },

itob opcode converts it to big endian bytes, that’s why it saves like this. How can it be achieved to concatenate bytes and int with readable format?

2

Hi. You can use setbyte:

cat inc.teal
#pragma version 3
//byte "MyCounter"
//app_global_get
//int 1
//+ // increment
//store 0

int 1234
int 1
+
store 0

byte "string_" // suffix


byte "0"

int 0 

load 0
store 1
load 1
int 10
%
store 2
load 2
int 48
+

setbyte	// last digit as str
store 3

byte "0"
int 0

load 1
load 2
-
int 10
/
store 1
load 1
int 10
%
store 2
load 2
int 48
+

setbyte
store 4

byte "0"
int 0

load 1
load 2
-
int 10
/
store 1
load 1
int 10
%
store 2
load 2
int 48
+

setbyte
store 5

byte "0"
int 0

load 1
load 2
-
int 10
/
store 1
load 1
int 10
%
store 2
load 2
int 48
+

setbyte
store 6

byte "0"
int 0

load 1
load 2
-
int 10
/
store 1
load 1
int 10
%
store 2
load 2
int 48
+

setbyte
store 7

byte "0"
int 0

load 1
load 2
-
int 10
/
store 1
load 1
int 10
%
store 2
load 2
int 48
+

setbyte
store 8

byte "0"
int 0

load 1
load 2
-
int 10
/
store 1
load 1
int 10
%
store 2
load 2
int 48
+

setbyte
store 9

byte "0"
int 0

load 1
load 2
-
int 10
/
store 1
load 1
int 10
%
store 2
load 2
int 48
+

setbyte
store 10

byte "0"
int 0

load 1
load 2
-
int 10
/
store 1
load 1
int 10
%
store 2
load 2
int 48
+

setbyte
store 11

byte "0"
int 0

load 1
load 2
-
int 10
/
store 1
load 1
int 10
%
store 2
load 2
int 48
+

setbyte
store 12

load 12
concat
load 11
concat
load 10
concat
load 9
concat 
load 8
concat
load 7
concat
load 6 
concat
load 5
concat
load 4 
concat
load 3
concat


//itob // convert to byte
//concat
//int 6
//btoi
//app_global_put

If you run it with tealdbg, there will be “string_0000001235” on the stack. Probably the same can be done much more efficiently, but I simply repeated a block of code, and then concatenated the ascii digits in reverse order.

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