Questions tagged [string]
The string tag has no usage guidance.
13
questions
0
votes
1
answer
79
views
Concat Address to String in smartpy
My use case is, I need to concat address with string this way,
"ab" + sp.self_address + "cd" .
How to achieve this in smartpy ?
- 13
0
votes
0
answers
31
views
Manipulation of string in smartpy
Hey I have a string "Hello World ".
I want to change it to helloworld.
Is there any efficient way to do it on smartpy without looping over each characters ?
- 184
1
vote
1
answer
97
views
Which hash function is used when converting an address from raw bytes?
With the raw address 0x0000861299624c9a3b52be10762c64bac282b1c02316 the first 4 characters (0000 in this case) represent tz1 and the rest of the string is the raw Tezos address.
From my research it ...
- 359
1
vote
1
answer
64
views
Why does calling sp.address() with a dynamic value inside an entrypoint fail?
Is there some way to call sp.address inside an entrypoint and pass in a dynamic String?
I have created an example contract showing the failing state:
import smartpy as sp
class ...
- 359
2
votes
1
answer
127
views
How to use internal hacks to convert from String to Address (or from Address to String) in SmartPy
There is a similar question but it does not fully answer this question.
In the answer for that question posted here there is mention that while it is officially not possible it is actually technically ...
- 359
2
votes
2
answers
58
views
Smartpy restrict entrypoint for originated addresses (KT1)
I would like to know if the entrypoint of my smart contract is called from an implicit(tz1) or an originated address(KT1). How can i do the check in smartpy?
Looking at the Smartpy documentation, it's ...
- 23
2
votes
2
answers
167
views
How do you convert a string sent to an entrypoint into its byte representation?
I want to turn a string into the 0x byte format inside an entrypoint.
If I try to use sp.pack() the actual value I want gets prepended with pack instructions as detailed here
I'm looking for a runtime ...
- 359
3
votes
1
answer
189
views
How to convert hex string/bytes to ASCII characters
Using Taquito I can load the storage from a smart contract. This storage contains a map called token_info. If I call token_info.get('symbol'), I get a hex string of "4d494e". How do I ...
- 729
0
votes
2
answers
178
views
How can I do string interpolation on smartpy?
I'm trying to provide better error messages. I've tried several things already that don't work such as regular python fstrings, regular string concatenation. I'm tried to using the sp.string function ...
- 557
2
votes
1
answer
128
views
How do you read and store a UTF-8 value in Michelson
The Michelson document from the Tezos Developers Resources page states the following about the string type:
Strings, with some usual escape sequences: \n, \, ". Unescaped
line-breaks (both \n ...
- 680
2
votes
1
answer
195
views
1
vote
1
answer
93
views
How are strings serialized in Tezos?
How are strings serialized to byte arrays? I understand that they are treated like strings, and that ASCII (or utf8) encoding is used. But what about the rest of the bytes, what do they mean?
Running ...
- 729
0
votes
1
answer
47
views
Can I use escape characters in LIGO strings?
I would like to insert some special ASCII characters that I only know how to express as numbers. In Python I would for example be able to write the SYN control character as \x16 since 0x16 is SYN in ...
- 729