Find String white spaces indices

This function return all white spaces indices as an array of Integer , and it’s work just fine with small string :

func whiteSpacesIndices(value : String) -> Array<Int> {     var indices: Array<Int> = []     for (index, char) in value.enumerated() {         if char == " " || char == "\n" || char == "\t" {             indices.append(index)         }     }     return indices } 

However when the string is too long , it could be very slow because it is looping in every character.

is there a better way for doing it?

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White shadow map

I am implementing the shadow map with OpenTK and c#, I do everything as expected but I always got a white shadow map if I render it to a quad.

First I initialize the frame buffer object

 private void initShadowBuffer()     {         FBO = GL.GenFramebuffer();         GL.BindFramebuffer(FramebufferTarget.Framebuffer, FBO);         GL.GenTextures(NUM_CASCADED, shadowMap);          //for (int i = 0; i < NUM_CASCADED; i++)         {             GL.BindTexture(TextureTarget.Texture2D, shadowMap[0]);             GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.DepthComponent, shadowSize, shadowSize, 0, PixelFormat.DepthComponent,                          PixelType.Float, IntPtr.Zero);             GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Linear);             GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMinFilter.Linear);             GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)TextureWrapMode.ClampToEdge);             GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)TextureWrapMode.ClampToEdge);              //float[] borderColor = { 1.0f, 1.0f, 1.0f, 1.0f };             //GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureBorderColor, borderColor);              GL.FramebufferTexture2D(FramebufferTarget.Framebuffer, FramebufferAttachment.DepthAttachment, TextureTarget.Texture2D, shadowMap[0], 0);         }          GL.DrawBuffer(DrawBufferMode.None);         GL.ReadBuffer(ReadBufferMode.None);         GL.BindTexture(TextureTarget.Texture2D, 0);         GL.BindFramebuffer(FramebufferTarget.Framebuffer, 0);     } 

then render to depth path

_3DShadowProgram.Use();  GL.Enable(EnableCap.DepthTest); GL.CullFace(CullFaceMode.Front); GL.Enable(EnableCap.PolygonOffsetFill); GL.PolygonOffset(1.0f, 1.0f); GL.BindFramebuffer(FramebufferTarget.DrawFramebuffer, FBO); GL.Viewport(0, 0, 1024, 1024); var lightOrthoMatrix = Matrix4.CreateOrthographicOffCenter(-50, 50, -50, 50, -1, 50); var lightViewMatrix = Matrix4.LookAt(light.Direction * -50, new Vector3(0), new Vector3(0, 1, 0)); lightProjectionView[0] = lightOrthoMatrix * lightViewMatrix;  GL.FramebufferTexture2D(FramebufferTarget.Framebuffer, FramebufferAttachment.DepthAttachment, TextureTarget.Texture2D, shadowMap[0], 0); GL.Clear(ClearBufferMask.DepthBufferBit);  GL.UniformMatrix4(GL.GetUniformLocation(_3DShadowProgramId, "lightProjectionView"), false, ref lightProjectionView[0]);             renderObjectsToDepthBuffer();  GL.BindFramebuffer(FramebufferTarget.Framebuffer, 0); GL.CullFace(CullFaceMode.Back); GL.Disable(EnableCap.PolygonOffsetFill); 

then I render and bind the shadow map. I get always no shadow when I render the shadow map to a quad I get a white map.

Mac mini 2018 hdmi white noise

I have 2018 mac mini, just bought it a few days ago, running OS X Mojave. And I have 2 monitors connected to it, 1 through usb-c and 1 through HDMI.

Whenever I wake my computer up from sleep, the monitor connected through usb-c wakes up instantly, but the other one takes a while to wake up. Like I could already be using the left screen and the right one is still black.

I tried plugging a different display to this HDMI port and it’s the same story, the monitor takes like 1 minute to start displaying the picture, after I wake my computer from sleep, but, this other monitor instead of just being a black screen displays white noise and then wakes up.

What could be the problem?

Need a picture of a white lady of around 35-40 years old for story

Hi All, we are releasing a true story to the media but the lady in the story does not want her picture taken. Its a revenge story where a mum of 3 caught her husband cheating. I need an image of a brunet/red/brown hair lady, white.

The lady should look serious. I.e not smiling. (her relationship just broke down!)

Also, this is in the UK so it needs to look like a UK picture (i.e dont take it outside a road or house which is obviously not UK)

$ 50 to the right image. Need to quickly.