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If Then statements FASTER than Switch statements on release builds of VB.NET?

2022.01.22 08:38 KiwiGamer450 If Then statements FASTER than Switch statements on release builds of VB.NET?

Hi all, I recently did some testing out of curiosity, and my results were... interesting to say the least.
Measuring timing of 100,000 If Then statements vs 100,000 Switch statements

C# DEBUG: IF THEN: 18.75068ms average SWITCH: 10.74228ms average 42.71% improvement from using switch over if else C# RELEASE: IF THEN: 7.81288ms average SWITCH: 6.64068ms average 15% improvement from using switch over if else VB.NET DEBUG: IF THEN: 16.79742ms average SWITCH: 9.76594ms average 41.86% improvement from using switch over if else VB.NET RELEASE: IF THEN: 3.9062ms average SWITCH: 6.25016ms average 60.01% PENALTY from using switch over if else 
Can anyone explain what's going on here? both were built for "Any CPU" on framework 4.7.2, with the same UI.
Code:
C#:
private void button1_Click(object sender, EventArgs e) { { // Get ready. txtIfThen.Clear(); txtSwitch.Clear(); this.Cursor = Cursors.WaitCursor; Refresh(); int iterations = int.Parse(txtIterations.Text); DateTime start_time; TimeSpan elapsed; // If then. start_time = DateTime.Now; for (int i = 1; i <= iterations; i++) { for (int num = 0; num < 50; num++) { int value; if (num == 0) { value = num; } else if (num == 1) { value = num; } else if (num == 2) { value = num; } else if (num == 49) { value = num; } else { value = num; } if (value > 1000) Console.WriteLine(value); } } elapsed = DateTime.Now - start_time; txtIfThen.Text = elapsed.TotalMilliseconds.ToString() + " ms"; txtIfThen.Refresh(); // Switch. start_time = DateTime.Now; for (int i = 1; i <= iterations; i++) { for (int num = 0; num < 50; num++) { int value; switch (num) { case 0: value = num; break; case 1: value = num; break; case 2: value = num; break; case 49: value = num; break; default: value = num; break; } if (value > 1000) Console.WriteLine(value); } } elapsed = DateTime.Now - start_time; txtSwitch.Text = elapsed.TotalMilliseconds.ToString() + " ms"; txtSwitch.Refresh(); this.Cursor = Cursors.Default; } } 
VB.NET:
 Private Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs) Handles Button1.Click txtIfThen.Clear() txtSwitch.Clear() Me.Cursor = Cursors.WaitCursor Refresh() Dim iterations As Integer = Integer.Parse(txtIterations.Text) Dim start_time As DateTime Dim elapsed As TimeSpan start_time = DateTime.Now For i As Integer = 1 To iterations For num As Integer = 0 To 50 - 1 Dim value As Integer If num = 0 Then value = num ElseIf num = 1 Then value = num ElseIf num = 2 Then value = num End If If num = 49 Then value = num Else value = num End If If value > 1000 Then Console.WriteLine(value) Next Next elapsed = DateTime.Now - start_time txtIfThen.Text = elapsed.TotalMilliseconds & " ms" txtIfThen.Refresh() start_time = DateTime.Now For i As Integer = 1 To iterations For num As Integer = 0 To 50 - 1 Dim value As Integer Select Case num Case 0 value = num Case 1 value = num Case 2 value = num Case 49 value = num Case Else value = num End Select If value > 1000 Then Console.WriteLine(value) Next Next elapsed = DateTime.Now - start_time txtSwitch.Text = elapsed.TotalMilliseconds & " ms" txtSwitch.Refresh() Me.Cursor = Cursors.[Default] End Sub 
submitted by KiwiGamer450 to dotnet [link] [comments]


2022.01.22 08:38 TryingToMakeAMil We’ve lost more than $1tn in market cap, but this time last year we didn’t even have a $1tn market cap

To put it into perspective, we’ve lost more than $1tn in total crypto market cap since the peak of this market and now we’re down to just $1.6tn overall.
But at the same time, on January 27, 2021 the total crypto market cap was only $979bn.
So you can see how much the market can bounce up in a relatively short amount of time.
Yes, crashes happen. Bear markets happen. Panic happens.
But if you’re not going to buy at these prices I guarantee you will get hit FOMO again once the market turns the tide and starts to go up as quickly as it’s been going down.
TLDR: buy the fu*king dip (BTFD)
Source
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Her doctors cannot seem to find any major issues but she says she is still not well.
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https://preview.redd.it/b8z21tkv68d81.png?width=619&format=png&auto=webp&s=f7e31536744be31aef451de3249d507becaa3fc0
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