Snap render list in Hamlet

Vote count:

0

Given this little project I'm using to learn Haskell, I would like to move my request handler's code generation to a Hamlet template, but am unsure how to pass things around.

My current code generates the following error when lines are uncommented, which is the first blocker:

Couldn't match expected type String -> String' with actual typeString' In the return type of a call of renderHtml' Probable cause:renderHtml' is applied to too many arguments In the expression: renderHtml ($ (shamletFile "fileList.hamlet")) In an equation for `myTemplate': myTemplate = renderHtml ($ (shamletFile "fileList.hamlet"))

Code:

site :: Snap ()
site =
    ifTop (writeBS "hello world") <|> 
    route [ ("foo", writeBS "ba"),
            ("view_root_json_files", listRootFilesHandler)
          ] <|> 
    dir "static" (serveDirectory ".")

--myTemplate :: String -> String
--myTemplate = renderHtml ( $(shamletFile "fileList.hamlet") )

toText :: [FilePath] -> Text
toText = foldMap (flip snoc '\n' . pack)

listRootFilesHandler :: Snap ()
listRootFilesHandler = do
    filenames <- liftIO $ getDirectoryContents "data"
    let filtered_filenames = filter (not . isPrefixOf ".") filenames
    writeText $ toText filtered_filenames

asked 46 secs ago

Leon Stafford

1,533

Snap render list in Hamlet

I'm learning IntroToCS using Java and something went wrong

Vote count:

0

import java.awt.Rectangle;

public class IONS {

public static void main(String[] args) {
    Rectangle x = new Rectangle(10, 20);
    int width = x.width();
    System.out.println(width);

}

}

ERROR: The method width() is undefined for the type Rectangle IONS.java

There is an error in line 7 while compiling, where am I going wrong ?

asked 21 secs ago

Abdul Moiz Sheikh

1

I'm learning IntroToCS using Java and something went wrong

Do not show icon on the cake

Vote count:

0

echo $html->link('', array('controller'=>'deals','action'=>'deals_print_setting','deal_id' => $deal['Deal']['id'], 'city' => $city_slug,'filter_id' => $id ,'ext' => 'csv'), array('class'=>'fancybox', 'data-fancybox-type'=>'ajax'));

asked 1 min ago

M.H.K

1

Do not show icon on the cake

Image Target Vufroria Sample example

Vote count:

0

i want to make my own object of tracker like in Image Target example i want to replace the Teapot by another 3D shape , the problem is i can't understand the code very well! here is the Code: Teapot Class: have two Functions: setVerts() and setIndices() with alot of indices and vertices numbers

and the ImageTargetRender is:

// The renderer class for the ImageTargets sample. 
public class ImageTargetRenderer implements GLSurfaceView.Renderer
{
    private static final String LOGTAG = "ImageTargetRenderer";

    private SampleApplicationSession vuforiaAppSession;
    private ImageTargets mActivity;

    private Vector<Texture> mTextures;

    private int shaderProgramID;

    private int vertexHandle;

    private int normalHandle;

    private int textureCoordHandle;

    private int mvpMatrixHandle;

    private int texSampler2DHandle;

    private Teapot mTeapot;

    private float kBuildingScale = 12.0f;
    private SampleApplication3DModel mBuildingsModel;

    private Renderer mRenderer;

    boolean mIsActive = false;

    private static final float OBJECT_SCALE_FLOAT = 3.0f;


    public ImageTargetRenderer(ImageTargets activity,
        SampleApplicationSession session)
    {
        mActivity = activity;
        vuforiaAppSession = session;
    }


    // Called to draw the current frame.
    @Override
    public void onDrawFrame(GL10 gl)
    {
        if (!mIsActive)
            return;

        // Call our function to render content
        renderFrame();
    }


    // Called when the surface is created or recreated.
    @Override
    public void onSurfaceCreated(GL10 gl, EGLConfig config)
    {
        Log.d(LOGTAG, "GLRenderer.onSurfaceCreated");

        initRendering();

        // Call Vuforia function to (re)initialize rendering after first use
        // or after OpenGL ES context was lost (e.g. after onPause/onResume):
        vuforiaAppSession.onSurfaceCreated();
    }


    // Called when the surface changed size.
    @Override
    public void onSurfaceChanged(GL10 gl, int width, int height)
    {
        Log.d(LOGTAG, "GLRenderer.onSurfaceChanged");

        // Call Vuforia function to handle render surface size changes:
        vuforiaAppSession.onSurfaceChanged(width, height);
    }


    // Function for initializing the renderer.
    private void initRendering()
    {
        mTeapot = new Teapot();

        mRenderer = Renderer.getInstance();

        GLES20.glClearColor(0.0f, 0.0f, 0.0f, Vuforia.requiresAlpha() ? 0.0f
            : 1.0f);

        for (Texture t : mTextures)
        {
            GLES20.glGenTextures(1, t.mTextureID, 0);
            GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, t.mTextureID[0]);
            GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D,
                GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_LINEAR);
            GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D,
                GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);
            GLES20.glTexImage2D(GLES20.GL_TEXTURE_2D, 0, GLES20.GL_RGBA,
                t.mWidth, t.mHeight, 0, GLES20.GL_RGBA,
                GLES20.GL_UNSIGNED_BYTE, t.mData);
        }

        shaderProgramID = SampleUtils.createProgramFromShaderSrc(
            CubeShaders.CUBE_MESH_VERTEX_SHADER,
            CubeShaders.CUBE_MESH_FRAGMENT_SHADER);

        vertexHandle = GLES20.glGetAttribLocation(shaderProgramID,
            "vertexPosition");
        normalHandle = GLES20.glGetAttribLocation(shaderProgramID,
            "vertexNormal");
        textureCoordHandle = GLES20.glGetAttribLocation(shaderProgramID,
            "vertexTexCoord");
        mvpMatrixHandle = GLES20.glGetUniformLocation(shaderProgramID,
            "modelViewProjectionMatrix");
        texSampler2DHandle = GLES20.glGetUniformLocation(shaderProgramID,
            "texSampler2D");

        try
        {
            mBuildingsModel = new SampleApplication3DModel();
            mBuildingsModel.loadModel(mActivity.getResources().getAssets(),
                "ImageTargets/Buildings.txt");
        } catch (IOException e)
        {
            Log.e(LOGTAG, "Unable to load buildings");
        }

        // Hide the Loading Dialog
        mActivity.loadingDialogHandler
            .sendEmptyMessage(LoadingDialogHandler.HIDE_LOADING_DIALOG);

    }


    // The render function.
    private void renderFrame()
    {
        GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT | GLES20.GL_DEPTH_BUFFER_BIT);

        State state = mRenderer.begin();
        mRenderer.drawVideoBackground();

        GLES20.glEnable(GLES20.GL_DEPTH_TEST);

        // handle face culling, we need to detect if we are using reflection
        // to determine the direction of the culling
        GLES20.glEnable(GLES20.GL_CULL_FACE);
        GLES20.glCullFace(GLES20.GL_BACK);
        if (Renderer.getInstance().getVideoBackgroundConfig().getReflection() == VIDEO_BACKGROUND_REFLECTION.VIDEO_BACKGROUND_REFLECTION_ON)
            GLES20.glFrontFace(GLES20.GL_CW); // Front camera
        else
            GLES20.glFrontFace(GLES20.GL_CCW); // Back camera

        // did we find any trackables this frame?
        for (int tIdx = 0; tIdx < state.getNumTrackableResults(); tIdx++)
        {
            TrackableResult result = state.getTrackableResult(tIdx);
            Trackable trackable = result.getTrackable();
            printUserData(trackable);
            Matrix44F modelViewMatrix_Vuforia = Tool
                .convertPose2GLMatrix(result.getPose());
            float[] modelViewMatrix = modelViewMatrix_Vuforia.getData();

            int textureIndex = trackable.getName().equalsIgnoreCase("stones") ? 0
                : 1;
            textureIndex = trackable.getName().equalsIgnoreCase("tarmac") ? 2
                : textureIndex;

            // deal with the modelview and projection matrices
            float[] modelViewProjection = new float[16];

            if (!mActivity.isExtendedTrackingActive())
            {
                Matrix.translateM(modelViewMatrix, 0, 0.0f, 0.0f,
                    OBJECT_SCALE_FLOAT);
                Matrix.scaleM(modelViewMatrix, 0, OBJECT_SCALE_FLOAT,
                    OBJECT_SCALE_FLOAT, OBJECT_SCALE_FLOAT);
            } else
            {
                Matrix.rotateM(modelViewMatrix, 0, 90.0f, 1.0f, 0, 0);
                Matrix.scaleM(modelViewMatrix, 0, kBuildingScale,
                    kBuildingScale, kBuildingScale);
            }

            Matrix.multiplyMM(modelViewProjection, 0, vuforiaAppSession
                .getProjectionMatrix().getData(), 0, modelViewMatrix, 0);

            // activate the shader program and bind the vertex/normal/tex coords
            GLES20.glUseProgram(shaderProgramID);

            if (!mActivity.isExtendedTrackingActive())
            {
                GLES20.glVertexAttribPointer(vertexHandle, 3, GLES20.GL_FLOAT,
                    false, 0, mTeapot.getVertices());
                GLES20.glVertexAttribPointer(normalHandle, 3, GLES20.GL_FLOAT,
                    false, 0, mTeapot.getNormals());
                GLES20.glVertexAttribPointer(textureCoordHandle, 2,
                    GLES20.GL_FLOAT, false, 0, mTeapot.getTexCoords());

                GLES20.glEnableVertexAttribArray(vertexHandle);
                GLES20.glEnableVertexAttribArray(normalHandle);
                GLES20.glEnableVertexAttribArray(textureCoordHandle);

                // activate texture 0, bind it, and pass to shader
                GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
                GLES20.glBindTexture(GLES20.GL_TEXTURE_2D,
                    mTextures.get(textureIndex).mTextureID[0]);
                GLES20.glUniform1i(texSampler2DHandle, 0);

                // pass the model view matrix to the shader
                GLES20.glUniformMatrix4fv(mvpMatrixHandle, 1, false,
                    modelViewProjection, 0);

                // finally draw the teapot
                GLES20.glDrawElements(GLES20.GL_TRIANGLES,
                    mTeapot.getNumObjectIndex(), GLES20.GL_UNSIGNED_SHORT,
                    mTeapot.getIndices());

                // disable the enabled arrays
                GLES20.glDisableVertexAttribArray(vertexHandle);
                GLES20.glDisableVertexAttribArray(normalHandle);
                GLES20.glDisableVertexAttribArray(textureCoordHandle);
            } else
            {
                GLES20.glDisable(GLES20.GL_CULL_FACE);
                GLES20.glVertexAttribPointer(vertexHandle, 3, GLES20.GL_FLOAT,
                    false, 0, mBuildingsModel.getVertices());
                GLES20.glVertexAttribPointer(normalHandle, 3, GLES20.GL_FLOAT,
                    false, 0, mBuildingsModel.getNormals());
                GLES20.glVertexAttribPointer(textureCoordHandle, 2,
                    GLES20.GL_FLOAT, false, 0, mBuildingsModel.getTexCoords());

                GLES20.glEnableVertexAttribArray(vertexHandle);
                GLES20.glEnableVertexAttribArray(normalHandle);
                GLES20.glEnableVertexAttribArray(textureCoordHandle);

                GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
                GLES20.glBindTexture(GLES20.GL_TEXTURE_2D,
                    mTextures.get(3).mTextureID[0]);
                GLES20.glUniformMatrix4fv(mvpMatrixHandle, 1, false,
                    modelViewProjection, 0);
                GLES20.glUniform1i(texSampler2DHandle, 0);
                GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0,
                    mBuildingsModel.getNumObjectVertex());

                SampleUtils.checkGLError("Renderer DrawBuildings");
            }

            SampleUtils.checkGLError("Render Frame");

        }

        GLES20.glDisable(GLES20.GL_DEPTH_TEST);

        mRenderer.end();
    }


    private void printUserData(Trackable trackable)
    {
        String userData = (String) trackable.getUserData();
        Log.d(LOGTAG, "UserData:Retreived User Data \"" + userData + "\"");
    }


    public void setTextures(Vector<Texture> textures)
    {
        mTextures = textures;

    }

}

buiding.xml is another file with diffrent numbers of vertices and indices i'm Confused about the numbers in Building.xml and in setVertx() .setindcises() plz help.

asked 54 secs ago

Marcel

4

Image Target Vufroria Sample example

form validation in PHP using preg_match

Vote count:

0

Hi I am trying to validate a simple HTML form. Here is my HTML code-

<HTML>
    <body>
        <form method="get" action="password.php">
        User ID<input type="text" name="user" id="user" required/><br/>
        Password<input type="password" name="pass" id="pass" required/><br/>
        <input type="submit" value"Login Here">
        </form>
    </body>
    </html>

The password must contain only digits. My password.php is-

<?php
    $name=$_GET['user'];
    $pass=$_GET['pass'];

    $strlen1= strlen($name);
    $strlen2= strlen($pass);

    $regex= "/^[789][0-9]{9}$/";   // my password should contain digits only.

    if($strlen1==0 | $strlen2==0)   
        {
            echo 'Username or password field is empty'.'<br/>';
        }

    else if($name==$pass)
        {
            echo 'Go for a better password'.'<br/>';
        }

    else if(!preg_match($regex,$pass))
        {
            echo 'password is invalid'.'<br/>';
        }

    else
        {
            echo 'You have successfully logged in'.'<br/>';
        }

    ?>

On running the script even when I enter the valid password like-"123456" the message says- "password is invalid". Please let me know the mistake in above code. Thanks!!!

asked 1 min ago

user3788040

27

form validation in PHP using preg_match

how to stream output as it happens C#

Vote count:

0

I got this code from microsoft support site and it allows you to run a external process from your application it give output after the execution of program but i would like to stream output as it happens on screen how do i do it?

using System;
using System.Diagnostics;
using System.IO;

namespace Way_Back_Downloader
{

internal class RunWget
{
    internal static string Run(string exeName, string argsLine, int timeoutSeconds)
    {
        StreamReader outputStream = StreamReader.Null;
        string output = "";
        bool success = false;

        try
        {
            Process newProcess = new Process();
            newProcess.StartInfo.FileName = exeName;
            newProcess.StartInfo.Arguments = argsLine;
            newProcess.StartInfo.UseShellExecute = false;
            newProcess.StartInfo.CreateNoWindow = true;
            newProcess.StartInfo.RedirectStandardOutput = true;
            newProcess.Start();



            if (0 == timeoutSeconds)
            {
                outputStream = newProcess.StandardOutput;
                output = outputStream.ReadToEnd();

                newProcess.WaitForExit();
            }
            else
            {
                success = newProcess.WaitForExit(timeoutSeconds * 1000);

                if (success)
                {
                    outputStream = newProcess.StandardOutput;
                    output = outputStream.ReadToEnd();
                }

                else
                {
                    output = "Timed out at " + timeoutSeconds + " seconds waiting for " + exeName + " to exit.";
                }

            }
        }
        catch (Exception exception)
        {
            throw (new Exception("An error occurred running " + exeName + ".", exception));
        }
        finally
        {
            outputStream.Close();
        }
        return "\t" + output;
    }
}
}

asked 9 secs ago

user3155632

153

how to stream output as it happens C#

Rotate around alternate axis

Vote count:

0

I am struggling with bitmap rotations. I wish to rotate a graphic around an alternate axis but I can only ever get it to rotate around the center point no matter what I do, putting in postTranlate. preTranslate, set Translate in any order doesnt work I have also tried the postRotate(45,0,0) but it always rotates around the center. Code below taken of internet what would I do to alter its rotation point, the code below uses the launcher icon which is square I am using a long thin graphic like an arrow. Thanks

// Rotate image to 45 degrees.

public void RotateImage(){
    ImageView image;
    Bitmap bMap;
    Matrix matrix;

    //Get ImageView from layout xml file
    image = (ImageView) findViewById(R.id.imageView1);

    //Decode Image using Bitmap factory.
    bMap = BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);

    //Create object of new Matrix.
    matrix = new Matrix();

    //set image rotation value to 45 degrees in matrix.
    matrix.postRotate(45);

    //Create bitmap with new values.
    Bitmap bMapRotate = Bitmap.createBitmap(bMap, 0, 0,
            bMap.getWidth(), bMap.getHeight(), matrix, true);

    //put rotated image in ImageView.
    image.setImageBitmap(bMapRotate);
}

asked 28 secs ago

user3129787

1

Rotate around alternate axis