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Cryptocurrency Ethereum Mastering Development

how to crerte hierarchical blockchin using Geth, ethereum?

As of my plan (in the attached figure) there will be 2 levels of blockchain. The top level blockchain (yellow circles) consist of 4 participant, admin top & admins middle. The bottom levels blockchain (green circle) consists of a middle admin and some child in it. So middle admins have to participate in two blockchains. […]

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Cryptocurrency Ethereum Mastering Development

How to check if a particular address is already present in an array

I know a similar question has been asked before but I want to understand where am I going wrong in terms of logic for the code below. I am building a lottery contract where if an address has been added once then that address can no longer play again. I am using a for loop […]

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Linux Mastering Development

Html parse to space-separated fields [duplicate]

<tr bgcolor=#98FB98><td class=centerText><a href=https://srini.raju.cloud.com/em/ target=’_blank’>KLCS</a></td><td>DA_L2T-ABCD-MC-ABCD-TEST-MC.092417.242115</td><td class=centerText><a href=https://srini.raju.cloud.com/em/faces/core-jobs-procedureExecutionTracking?instanceGUID=B014311F8087DCCCE0530C546B0AA125&showProcActLink=yes&executionGUID=B014311F89A6DCCCE0530C546B0AA125 target=’_blank’>Completed</a></td><td>02-SEP-2019 21:15:07</td><td>02-SEP-2019 01:36:51</td><td>25-SEP-2020 01:36:51</td></tr> That is HTML format I need to parse that to a file with space-separated fields, like this KLCS ABCD ABCD-TEST Completed

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Linux Mastering Development

Ubuntu – running headless with VNC, also NetworkManager slowly ‘locking down’ (grey buttons)

I have a Raspberry Pi 4 8GB – so an 8GB quad-core ARM system. I have installed Ubuntu-Mate 64-bit on this; the installation is done with the ‘official’ Ubuntu-Mate 64-bit image. I am having problems with the networking; I managed to mess up the configuration files, resulting in a clean re-install. But the problem is […]

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CMS Magento Mastering Development

Magento 2 – How to solve the issue after import image from backend replaced by placeholder image

I just import images from the backend, save after upload replaced by placeholder image, my uploaded image does not save instead of placeholder image available, how to solve this issue?

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CMS Magento Mastering Development

Currency Switcher – Magento 2.4

I am using multiple currency like (USD, AED, INR, PKR and CAD etc). But I have single store website in Magento 2.4.0. But My issue is i want to add all prices to these currency through products, fox example i have created simple product but there are only 1 option for Base price, i can […]

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CMS Magento Mastering Development

Google Analytics Shopping Behavior Analysis Missing Data Ask

I’ve created an eCommerce store and created the analytics for this store, On Magento2 backend I’ve placed the Tracking Code and I start to check that the data is being sent into GA. The enhanced eCommerce is already enabled and collecting order data. The issue is the Shopping Analysis Behavior that is missing data on […]

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Mastering Development

Oracle puzzle: Selecting from a non-existing table

I have a table named "libisatz" in my database, and there is no table, nor view with name "libiSatz" (with capital S instead of s) and I don’t find any kind of object in my schema having name "libiSatz". But, surprisingly selecting from "libiSatz" results in the same result as if I had written "libisatz". […]

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CMS Magento Mastering Development

how change the top left logo in admin back-end (dashboard) by code

i am using Magento 2.2 and i want to change thee default Magento admin panel logo on the top left in admin backend, i have change the default for admin login page but it’s not applicable for the admin top left logo can anyone give me any idea please?

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CMS Magento Mastering Development

Add caption or helper text to admin filter in magento 2

I added a filter in my admin panel. But i want to add a helper text before or after the input field. Like the ‘more information about…’ in this screenshot: Right now the field config i have is this, but neither caption or placeholder are showing: I cant find any config options for adding a […]