/tags/algorithm/Recent content in algorithm on Neolisk's Tech BlogHugo -- gohugo.ioenneolisk@gmail.com (Victor Zakharov)neolisk@gmail.com (Victor Zakharov)©2020-2024 Victor Zakharov. All Rights ReservedFri, 14 Aug 2015 00:00:00 +0000/posts/2015-08-14-csharp-normalize-whitespace/Fri, 14 Aug 2015 00:00:00 +0000neolisk@gmail.com (Victor Zakharov)Sat, 05 Jun 2021 11:36:56 -0400/posts/2015-08-14-csharp-normalize-whitespace/Simple task - replace all sequential whitespace (tabs, spaces, newlines) with your character of choice, usually a space. Fact - StackOverflow is on top in google results, when searching for “C# normalize whitespace”. How to replace multiple white spaces with one white space c# Fastest way to remove extra white spaces Why this article? Highest voted answers are not the best performing, and some answers are just wrong. I propose a solution which is based on this StackOverflow answer.Victor Zakharovcsharpalgorithm/posts/2015-08-13-csharp-capture-full-stacktrace/Thu, 13 Aug 2015 00:00:00 +0000neolisk@gmail.com (Victor Zakharov)Sat, 05 Jun 2021 11:36:56 -0400/posts/2015-08-13-csharp-capture-full-stacktrace/When you catch an exception, you only have stack trace relative to the catch point. The problem is very clearly described in this article on CodeProject: .NET: Exception stack trace has no frames above the catch point. Why is this important? Suppose the error occurs when sending email and this is a non-critical part of your application. Let’s say you send confirmation emails to clients as part of the ordering process.Victor Zakharovcsharpalgorithm/posts/2010-03-30-powershell-print-all-odd-even-lines/Tue, 30 Mar 2010 00:00:00 +0000neolisk@gmail.com (Victor Zakharov)Mon, 12 Oct 2020 10:25:43 -0400/posts/2010-03-30-powershell-print-all-odd-even-lines/As a little brainstormer, suppose you have a variable with the following test content: 1 2 3 4 5 6 7 8 $str = @" Line 1 Line 2 Line 3 Line 4 Line 5 Line 6 "@ Here is how you can print all odd lines from it: 1 $f=0; $str.Split("`n") | % { if($f = !$f) { $_ } } Or, if you want all even lines, change the initial $f value to 1:Victor Zakharovpowershellalgorithm/posts/2010-03-28-vbnet-thread-safe-progress-bar/Sun, 28 Mar 2010 00:00:00 +0000neolisk@gmail.com (Victor Zakharov)Mon, 12 Oct 2020 10:35:19 -0400/posts/2010-03-28-vbnet-thread-safe-progress-bar/Normally, when you are using .NET built-in progress bar in a multi-threaded application without Callback tricks, you are likely to get an exception on value assign, similar to the following: I recently wrote a fairly simple wrapper class, which solves the problem. See code below: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Public Class MyProgressBar : Inherits ProgressBar Public Delegate Sub SetRefreshCallback() Public Delegate Sub SetValueCallback(ByVal v As Integer) Public Shadows Text As String = String.Victor Zakharovvbnetalgorithm/posts/2010-02-09-powershell-get-mac-of-remote-ip/Tue, 09 Feb 2010 00:00:00 +0000neolisk@gmail.com (Victor Zakharov)Mon, 12 Oct 2020 14:40:56 -0400/posts/2010-02-09-powershell-get-mac-of-remote-ip/Here is a PowerShell one-liner: 1 2 #change/assign $hostIp to a valid IP address (gwmi -Class Win32_NetworkAdapterConfiguration | where { $_.IpAddress -eq $hostIp }).MACAddress If you need to dynamically resolve a host IP from its name: 1 2 #change/assign $Computer to a valid host identifier $hostIp = [System.Net.Dns]::GetHostByName($Computer).AddressList[0].IpAddressToString The whole script may look like the following: 1 2 3 4 5 6 7 8 9 10 11 12 param ( $Computer , $Credential ) #to make it work without parameters if($Computer -eq $null) { $Computer = $env:COMPUTERNAME } #program logic $hostIp = [System.Victor Zakharovpowershelldevopsalgorithm