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Walmart Signer

Hello everybody, today I want to preserve at my blog piece of code that almost eaten my brain. Walmart signer.  using System; using System.Collections.Generic; using System.ComponentModel; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Globalization; using...

How To Measure Size Of Vector

Hello everybody, today  I want to share with everybody information about function that is known as norm. Here it is: ||x|| p = ( Σ(|x|i)p) p -1 For p ∈ R, p ≥ 1 Also it is named as Lp norm. On intuition level it measures distance from some beginning point to locatio of x. &nbs...

Bind9 In Centos

Hello everybody, recently I've got a task to configure Bind9 on CentOS. While doing this I have found some hardly documented features of CentOS. File locations and defaults By default bind9 is has name named. It means that you can start it with command systemctl. For example you can get status of...

One More Example Of Selectors

Hello everybody, today I want to present one more example of selectors, but the one, that has multiple fields in it.  Consider following code: using System; using System.Collections; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using...