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Cryptocurrency Ethereum Mastering Development

Error while calling a function,

I created a Factory Contract which can create new ERC20 tokens with the parameters passed to it. Address of the contract: (Goerli Testnet) 0x482829Ba989fBC368F9A89dFf56cdF4036F39F28 I tested the contract on remix and it works fine. But when I’m calling this function using web3js. I’m getting this error: (node:10286) UnhandledPromiseRejectionWarning: Error: Returned error: The method eth_sendTransaction does […]

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Ask Biology

How to find the origin of each Single Nucleotide Variants (SNV) in child when having variant call data for both parents?

I am working with a trio (Mom, Dad, Child). I have variant call data for all three. Now I want to know each SNV in the child comes from which parent? Is there any tool that could help me to achieve this goal? Many thanks, Vahid.

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Mastering Development System & Network

Unrecognized utun# interfaces on my Mac

I noticed a bunch of unrecognized utun# virtual interfaces on my Mac OS Catalina. I don’t use any VPN so I wonder where they come from and is it safe to remove them? utun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1380 inet6 <REDACTED>%utun0 prefixlen 64 scopeid 0xb nd6 options=201<PERFORMNUD,DAD> utun1: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 2000 inet6 <REDACTED>%utun1 prefixlen 64 scopeid 0xc […]

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Mastering Development

Is there a way in ggplot2 in R to manipulate or customize the display of x axis text?

Challenge:I need to automatically (without hard coding) customize x axis text in my graph, as follows. This is exclusively for aesthetic appeal for my users: Two rows of text needed in place of x axis text. First row, displays a sub-category (Role) while the second row (breed) displays a main category. See reprex code data […]

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Development

Python pandas grouping according to a column, counting the cumulative value of its corresponding column

I have had to deal with some problems today with python. According to the sales area grouping, the corresponding shipments are accumulated and the shipment results are rounded. The value of a large area is NULL or empty, hoping to skip the statistics. The output csv file needs to have a large area + sales […]

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Development

Displaying the average next to the array

I’m new to Java, so apologies. I’ve got two arrays: int[] grades = {64,55,45,67,65,88}; String[] unitCode = {“APP:”,”BSAD:”,”CF”,”DAD:”,”N&CS:”,”POP:”}; And I need to bring each one next to each other to form: [APP:64, BSAD:55, CF45, DAD:67, N&CS:65, POP:88] I’ve managed to achieve this with this code: public String[] unitMarks(int[] grades, String[] unitCode) { double sum = […]

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Development

How can I create submatrices

I understand that I can extract submatrices from an already created matrix but I want to be able to create submatrices first then combine the created submatrices to form a bigger matrix to save space and time. For example in my example, I want to be able to create a submatrix for IDs with NAs […]