the wallet is injected in pages which match any of the following patterns: 
`http://localhost/*`
`https://*/*`

_This answer was originally posted on [StarkNet Discord](https://www.newton.so/view?tags=discord)_

Newton

Hi all, 

Braavos does not seem be injected when running app locally it does work when deployed is there something i should check? 

only difference i can think of is that prod version has SSL/HTTPS and local does not
and i am not using localhost for local version so that could be an issue
but it does works with Argent X on local version

upd: thank you for helping using localhost does solve my issue

_This question was originally posted on [StarkNet Discord](https://www.newton.so/view?tags=discord)_

Braavos does not seem be injected when running app locally it does work when deployed is there something i should check?

I’m having a problem where I’m trying to use a Uint256 in a hint, but I keep getting this error


Here is my code:


`%builtins output range_check`


`﻿`


`from starkware.cairo.common.uint256 import (uint256_add, Uint256,`


 `uint256_mul)`


`from starkware.cairo.common.serialize import serialize_word`


`﻿`


`func main{output_ptr : felt*, range_check_ptr}():`


 `alloc_locals`


 `let num1 = Uint256(20000, 0)`


 `%{print(ids.num1)%}`


 `let num2 = Uint256(low=0,high=7)`


 `let (local mul_low : Uint256, local mul_high : Uint256) = uint256_mul(num1, num2)`


 `serialize_word(mul_high.low)`


`﻿`


 `return ()`


`end`


ㅤ
_This question was originally posted on [Triality](https://triality.org/question/378)_

Cairo error "Expected expression of type 'starkware.cairo.common.uint256.Uint256' to have an address."

Can we deploy kakarot zkEVM on StarkEx and then run multiple solidity dapps on top of it?

Deploying kakarot evm on starkEx

Hey!
I had a question about what would be the cleanest way to imitate a `uint32` or `uint64` in cairo. Two approaches came to mind:
1. Simply use a felt and check that is less than `2**32 - 1`
2. Pass a Uint256 and check that var.high == 0 and var.low is less than `2 ** 32 -1`

First approach seems straightforward, but I wanted to know if there was a convention for this or a better way.

How to check for smaller Uints in Cairo?

Does Kakarot zkEVM have a token?

why there is no fee for deploying an account contract (creating account)?

_This question was originally posted on [StarkNet Discord](https://www.newton.so/view?tags=discord)_

Why there is no fee for deploying an account contract (creating account)?

How do I access the address 0, ie 0x0 in Cairo? Like address(0) in solidity


ㅤ
_This question was originally posted on [Triality](https://triality.org/question/656)_

Cairo: Getting the zero address

Hi, I'm using pytest for testing cairo contract. I found that a simple starknet setup and initial call for contract cost 34 seconds. Is there a way to accelerate test?

upd: yes, [this works](https://www.notion.so/Hi-I-m-using-pytest-for-testing-cairo-contract-I-found-that-a-simple-starknet-setup-and-initial-ca-db2282fc02f2463aadaf63eac655df6f). but I found that compiling contract cost 7s and deploying contract cost 25s. These two operations are the most time-consuming

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Braavos does not seem be injected when running app locally it does work when deployed is there something i should check?

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