Concerning the folders you mentioned:

• /libs is usually used for custom classes/functions/modules
• /vendor or /support contains 3rd party libraries (added as git sub-module when using git as source control)
• /spec contains specifications for BDD tests.
• /tests contains the unit-tests for an application (using a testing framework, see here)

NOTE: both /vendor and /support are deprecated since NPM introduced a clean package management. It's recommended to handle all 3rd-party dependencies using NPM and a package.json file

When building a rather large application, I recommend the following additional folders (especially if you are using some kind of MVC- / ORM-Framework like express or mongoose):

• /models contains all your ORM models (called Schemas in mongoose)
• /views contains your view-templates (using any templating language supported in express)
• /public contains all static content (images, style-sheets, client-side JavaScript)
  • /assets/images contains image files
  • /assets/pdf contains static pdf files
  • /css contains style sheets (or compiled output by a css engine)
  • /js contains client side JavaScript
• /controllers contain all your express routes, separated by module/area of your application (note: when using the bootstrapping functionality of express, this folder is called /routes)

I got used to organize my projects this way and i think it works out pretty well.

Update for CoffeeScript-based Express applications (using connect-assets):

• /app contains your compiled JavaScript
• /assets/ contains all client-side assets that require compilation
  • /assets/js contains your client-side CoffeeScript files
  • /assets/css contains all your LESS/Stylus style-sheets
• /public/(js|css|img) contains your static files that are not handled by any compilers
• /src contains all your server-side specific CoffeeScript files
• /test contains all unit testing scripts (implemented using a testing-framework of your choice)
• /views contains all your express views (be it jade, ejs or any other templating engine)

You need to use <br> instead of \r\n . For this you can use built in function call nl2br So your code should be like this

 $message = nl2br("CCCC\r\nCCCC CCCC \r CCC \n CCC \r\n CCC \n\r CCCC");

char **orderIds;

orderIds = malloc(variableNumberOfElements * sizeof(char*));

for(int i = 0; i < variableNumberOfElements; i++) {
  orderIds[i] = malloc((ID_LEN + 1) * sizeof(char));
  strcpy(orderIds[i], your_string[i]);
}

This worked for me, none of the above worked.

.modal-dialog{
    position: relative;
    display: table; /* This is important */ 
    overflow-y: auto;    
    overflow-x: auto;
    width: auto;
    min-width: 300px;   
}

You can also try Word Extractor tool. Word Extractor can be used with any file in your computer to separate the strings that contain human text / words from binary code (exe applications, DLLs).

See the crypto.createHash() function and the associated hash.update() and hash.digest() functions:

var crypto = require('crypto')
var shasum = crypto.createHash('sha1')
shasum.update('foo')
shasum.digest('hex') // => "0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33"

Left alinged triangle- * **

from above pattern we come to know that-
1)we need to print pattern containing n rows (for above pattern n is 4).
2)each  row contains star and no of stars i each row is incremented by 1.
So for Left alinged triangle we need to use 2 for loop.
1st "for loop" for printing n row.
2nd  "for loop for printing stars in each rows. 


 Code for  Left alinged triangle-

 public static void leftTriangle()
{
       /// here  no of rows is 4
 for (int a=1;a<=4;a++)// for loop for row
 {   
 for (int b=1;b<=a;b++)for loop for column
 {
 System.out.print("*");
 }

System.out.println();}
}

Right alinged triangle- *
**

from above pattern we come to know that-
1)we need to print pattern containing n rows (for above pattern n is 4).
 2)In each  row we need to print spaces followed by a star & no of spaces            in each row is decremented by 1.
 So for Right alinged triangle we need to use 3 for loop.
 1st "for loop" for printing n row.
 2nd  "for loop for printing spaces.
 3rd "for loop" for printing stars.

Code for Right alinged triangle -

public void rightTriangle()
{
    // here 1st print space and then print star
  for (int a=1;a<=4;a++)// for loop for row
 { 
 for (int c =3;c>=a;c--)// for loop fr space
 {  
 System.out.print(" ");
 }
 for (int d=1;d<=a;d++)// for loop for column
 { 
 System.out.print("*");   
 }
 System.out.println(); 
 }
 }

Center Triangle- *
* *

from above pattern we come to know that- 1)we need to print pattern containing n rows (for above pattern n is 4). 2)Intially in each row we need to print spaces followed by a star & then again a space . NO of spaces in each row at start is decremented by 1. So for Right alinged triangle we need to use 3 for loop. 1st "for loop" for printing n row. 2nd "for loop for printing spaces. 3rd "for loop" for printing stars.

Code for center Triangle-

public  void centerTriangle()
{   
for (int a=1;a<=4;a++)// for lop for row
{   
for (int c =4;c>=a;c--)// for loop for space
{  
System.out.print(" ");
}
for (int b=1;b<=a;b++)// for loop for column
{
System.out.print("*"+" ");
}
System.out.println();}
}

CODE FOR PRINTING ALL 3 PATTERNS - public class space4 { public static void leftTriangle() { /// here no of rows is 4 for (int a=1;a<=4;a++)// for loop for row {
for (int b=1;b<=a;b++)for loop for column { System.out.print("*"); }

System.out.println();}
}

public static void rightTriangle()
{
    // here 1st print space and then print star
  for (int a=1;a<=4;a++)// for loop for row
 { 
 for (int c =3;c>=a;c--)// for loop for space
 {  
 System.out.print(" ");
 }
 for (int d=1;d<=a;d++)// for loop for column
 { 
 System.out.print("*");   
 }
 System.out.println(); 
 }
 }

public static void centerTriangle()
{   
for (int a=1;a<=4;a++)// for lop for row
{   
for (int c =4;c>=a;c--)// for loop for space
{  
System.out.print(" ");
}
for (int b=1;b<=a;b++)// for loop for column
{
System.out.print("*"+" ");
}
System.out.println();}
}
public static void main (String args [])
{
space4 s=new space4();
s.leftTriangle();
s.rightTriangle();
s.centerTriangle();
}
}

I think docker recently added the --add-host flag to docker build which is really great.

[Edit] So this feature was updated on 17.04.0-ce

For more detail on how to use docker build with the --add-host flag please visit: https://docs.docker.com/edge/engine/reference/commandline/build/

Preferences >> General >> Editors >> Text editors >> Spelling: Enconding

P.S.: Eclipse Indigo and Juno.

Basically, you're not allowed to request JSON data from another domain via AJAX due to same-origin policy. AJAX allows you to fetch data after a page has already loaded, and then execute some code/call a function once it returns. We can't use AJAX but we are allowed to inject <script> tags into our own page and those are allowed to reference scripts hosted at other domains.

Usually you would use this to include libraries from a CDN such as jQuery. However, we can abuse this and use it to fetch data instead! JSON is already valid JavaScript (for the most part), but we can't just return JSON in our script file, because we have no way of knowing when the script/data has finished loading and we have no way of accessing it unless it's assigned to a variable or passed to a function. So what we do instead is tell the web service to call a function on our behalf when it's ready.

For example, we might request some data from a stock exchange API, and along with our usual API parameters, we give it a callback, like ?callback=callThisWhenReady. The web service then wraps the data with our function and returns it like this: callThisWhenReady({...data...}). Now as soon as the script loads, your browser will try to execute it (as normal), which in turns calls our arbitrary function and feeds us the data we wanted.

It works much like a normal AJAX request except instead of calling an anonymous function, we have to use named functions.

jQuery actually supports this seamlessly for you by creating a uniquely named function for you and passing that off, which will then in turn run the code you wanted.

There are 2 real ways to represent sizes when related to bytes, they are SI units (10^3) or IEC units (2^10). There is also JEDEC but their method is ambiguous and confusing. I noticed the other examples have errors such as using KB instead of kB to represent a kilobyte so I decided to write a function that will solve each of these cases using the range of currently accepted units of measure.

There is a formatting bit at the end that will make the number look a bit better (at least to my eye) feel free to remove that formatting if it doesn't suit your purpose.

Enjoy.

// pBytes: the size in bytes to be converted.
// pUnits: 'si'|'iec' si units means the order of magnitude is 10^3, iec uses 2^10

function prettyNumber(pBytes, pUnits) {
    // Handle some special cases
    if(pBytes == 0) return '0 Bytes';
    if(pBytes == 1) return '1 Byte';
    if(pBytes == -1) return '-1 Byte';

    var bytes = Math.abs(pBytes)
    if(pUnits && pUnits.toLowerCase() && pUnits.toLowerCase() == 'si') {
        // SI units use the Metric representation based on 10^3 as a order of magnitude
        var orderOfMagnitude = Math.pow(10, 3);
        var abbreviations = ['Bytes', 'kB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];
    } else {
        // IEC units use 2^10 as an order of magnitude
        var orderOfMagnitude = Math.pow(2, 10);
        var abbreviations = ['Bytes', 'KiB', 'MiB', 'GiB', 'TiB', 'PiB', 'EiB', 'ZiB', 'YiB'];
    }
    var i = Math.floor(Math.log(bytes) / Math.log(orderOfMagnitude));
    var result = (bytes / Math.pow(orderOfMagnitude, i));

    // This will get the sign right
    if(pBytes < 0) {
        result *= -1;
    }

    // This bit here is purely for show. it drops the percision on numbers greater than 100 before the units.
    // it also always shows the full number of bytes if bytes is the unit.
    if(result >= 99.995 || i==0) {
        return result.toFixed(0) + ' ' + abbreviations[i];
    } else {
        return result.toFixed(2) + ' ' + abbreviations[i];
    }
}

Side Note: Starting at rails 5.0.0 rake has been changed to rails So perform the following

rails db:migrate VERSION=0

You can simply center the image and text in the parent tag by setting

div {
     text-align: center;
}

vertical center the img and span

img {
     vertical-align:middle;
}
span {
     vertical-align:middle;
}

You can just add second set below, and one thing to mention is that h4 has block display attribute, so you might want to set

h4 {
    display: inline-block
}

to set the h4 "inline".

The full example is shown here.

<div id="photo" style="text-align: center">_x000D_
  <img style="vertical-align:middle" src="https://via.placeholder.com/22x22" alt="">_x000D_
  <span style="vertical-align:middle">Take a photo</span>_x000D_
</div>

C++03 3.10/1 says: "Every expression is either an lvalue or an rvalue." It's important to remember that lvalueness versus rvalueness is a property of expressions, not of objects.

Lvalues name objects that persist beyond a single expression. For example, obj , *ptr , ptr[index] , and ++x are all lvalues.

Rvalues are temporaries that evaporate at the end of the full-expression in which they live ("at the semicolon"). For example, 1729 , x + y , std::string("meow") , and x++ are all rvalues.

The address-of operator requires that its "operand shall be an lvalue". if we could take the address of one expression, the expression is an lvalue, otherwise it's an rvalue.

 &obj; //  valid
 &12;  //invalid

1. Remove "Network Link Conditioner", open "System Preferences", press CTRL and click the "Network Link Conditioner" icon. Select "Remove".
2. Restart your computer
3. Download the dmg "Hardware IO tools" for your XCode version from https://developer.apple.com/download/, you need to be logged in to do this.
4. Open it and install "Network Link Conditioner"
5. Restart your computer one last time.

This works for me in Java 1.5 - I stripped out specific exceptions for readability.

import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.DocumentBuilder;
import org.w3c.dom.Document;
import java.io.ByteArrayInputStream;

public Document loadXMLFromString(String xml) throws Exception
{
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();

    factory.setNamespaceAware(true);
    DocumentBuilder builder = factory.newDocumentBuilder();

    return builder.parse(new ByteArrayInputStream(xml.getBytes()));
}

Try this:

return Redirect("http://www.website.com");

The difference between starting an Activity from a Fragment and an Activity is how you get the context, because in both cases it has to be an activity.

From an activity: The context is the current activity (this)

Intent intent = new Intent(this, NewActivity.class);
startActivity(intent);

From a fragment: The context is the parent activity (getActivity()). Notice, that the fragment itself can start the activity via startActivity(), this is not necessary to be done from the activity.

Intent intent = new Intent(getActivity(), NewActivity.class);
startActivity(intent);

You can have the program create an .ics (iCal) version of the calendar and then you can import this .ics into whichever calendar program you'd like: Google, Outlook, etc.

I know this post is quite old, so I won't bother inputting any code. But please comment on this if you'd like me to provide an outline of how to do this.

To add to Reed Copsey's answer about using Task.FromResult, you can improve performance even more if you cache the already completed task since all instances of completed tasks are the same:

public static class TaskExtensions
{
    public static readonly Task CompletedTask = Task.FromResult(false);
}

With TaskExtensions.CompletedTask you can use the same instance throughout the entire app domain.

The latest version of the .Net Framework (v4.6) adds just that with the Task.CompletedTask static property

Task completedTask = Task.CompletedTask;

The trick for me was to add double quotes around keys and values. If you use a PHP function like json_encode will give you a JSON encoded string and an idea how to properly encode yours.

jQuery('#elm-id').data('datakey') will return an object of the string, if the string is properly encoded as json.

As per jQuery documentation: (http://api.jquery.com/jquery.parsejson/)

Passing in a malformed JSON string results in a JavaScript exception being thrown. For example, the following are all invalid JSON strings:

1. "{test: 1}" (test does not have double quotes around it).
2. "{'test': 1}" ('test' is using single quotes instead of double quotes).
3. "'test'" ('test' is using single quotes instead of double quotes).
4. ".1" (a number must start with a digit; "0.1" would be valid).
5. "undefined" (undefined cannot be represented in a JSON string; null, however, can be).
6. "NaN" (NaN cannot be represented in a JSON string; direct representation of Infinity is also n

You can do it as following:

class ProjectInfo
{
    public string Name {get; set; }
    public long Id {get; set; }

    ProjectInfo(string n, long id)
    {
        name = n;   Id = id;
    }
}

public List<ProjectInfo> GetProjectForCombo()
{
    using (MyDataContext db = new MyDataContext (DBHelper.GetConnectionString()))
    {
         var query = from pro in db.Projects
                    select new ProjectInfo(pro.ProjectName,pro.ProjectId);

         return query.ToList<ProjectInfo>();
    }
}

function update() {
  $("#notice_div").html('Loading..'); 
  $.ajax({
    type: 'GET',
    url: 'jbede.php',
    timeout: 2000,
    success: function(data) {
      $("#some_div").html(data);
      $("#notice_div").html(''); 
      window.setTimeout(update, 10000);
    },
    error: function (XMLHttpRequest, textStatus, errorThrown) {
      $("#notice_div").html('Timeout contacting server..');
      window.setTimeout(update, 60000);
    }
});
}
$(document).ready(function() {
    update();
});

This is Better Code

Introduction

This can have a lot of causes which are broken down in following sections:

• Put servlet class in a package
• Set servlet URL in url-pattern
• @WebServlet works only on Servlet 3.0 or newer
• javax.servlet.* doesn't work anymore in Servlet 5.0 or newer
• Make sure compiled *.class file is present in built WAR
• Test the servlet individually without any JSP/HTML page
• Use domain-relative URL to reference servlet from HTML
• Use straight quotes in HTML attributes

Put servlet class in a package

First of all, put the servlet class in a Java package. You should always put publicly reuseable Java classes in a package, otherwise they are invisible to classes which are in a package, such as the server itself. This way you eliminiate potential environment-specific problems. Packageless servlets work only in specific Tomcat+JDK combinations and this should never be relied upon.

In case of a "plain" IDE project, the class needs to be placed in its package structure inside "Java Resources" folder and thus not "WebContent", this is for web files such as JSP. Below is an example of the folder structure of a default Eclipse Dynamic Web Project as seen in Navigator view:

EclipseProjectName
 |-- src
 |    `-- com
 |         `-- example
 |              `-- YourServlet.java
 |-- WebContent
 |    |-- WEB-INF
 |    |    `-- web.xml
 |    `-- jsps
 |         `-- page.jsp
 :

In case of a Maven project, the class needs to be placed in its package structure inside main/java and thus not main/resources, this is for non-class files and absolutely also not main/webapp, this is for web files. Below is an example of the folder structure of a default Maven webapp project as seen in Eclipse's Navigator view:

MavenProjectName
 |-- src
 |    `-- main
 |         |-- java
 |         |    `-- com
 |         |         `-- example
 |         |              `-- YourServlet.java
 |         |-- resources
 |         `-- webapp
 |              |-- WEB-INF
 |              |    `-- web.xml
 |              `-- jsps
 |                   `-- page.jsp
 :

Note that the /jsps subfolder is not strictly necessary. You can even do without it and put the JSP file directly in webcontent/webapp root, but I'm just taking over this from your question.

Set servlet URL in url-pattern

The servlet URL is specified as the "URL pattern" of the servlet mapping. It's absolutely not per definition the classname/filename of the servlet class. The URL pattern is to be specified as value of @WebServlet annotation.

package com.example; // Use a package!

@WebServlet("/servlet") // This is the URL of the servlet.
public class YourServlet extends HttpServlet { // Must be public and extend HttpServlet.
    // ...
}

In case you want to support path parameters like /servlet/foo/bar, then use an URL pattern of /servlet/* instead. See also Servlet and path parameters like /xyz/{value}/test, how to map in web.xml?

@WebServlet works only on Servlet 3.0 or newer

In order to use @WebServlet, you only need to make sure that your web.xml file, if any (it's optional since Servlet 3.0), is declared conform Servlet 3.0+ version and thus not conform e.g. 2.5 version or lower. Below is a Servlet 4.0 compatible one (which matches Tomcat 9+, WildFly 11+, Payara 5+, etc).

<?xml version="1.0" encoding="UTF-8"?>
<web-app
    xmlns="http://xmlns.jcp.org/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
    version="4.0"
>
    <!-- Config here. -->
</web-app>

Or, in case you're not on Servlet 3.0+ yet (e.g. Tomcat 6 or older), then remove the @WebServlet annotation.

package com.example;

public class YourServlet extends HttpServlet {
    // ...
}

And register the servlet instead in web.xml like this:

<servlet>
    <servlet-name>yourServlet</servlet-name>
    <servlet-class>com.example.YourServlet</servlet-class>
</servlet>
<servlet-mapping>
    <servlet-name>yourServlet</servlet-name>
    <url-pattern>/servlet</url-pattern>  <!-- This is the URL of the servlet. -->
</servlet-mapping>

Note thus that you should not use both ways. Use either annotation based configuarion or XML based configuration. When you have both, then XML based configuration will override annotation based configuration.

javax.servlet.* doesn't work anymore in Servlet 5.0 or newer

Since Jakarta EE 9 / Servlet 5.0 (Tomcat 10, TomEE 9, WildFly 22 Preview, GlassFish 6, Payara 6, Liberty 22, etc), the javax.* package has been renamed to jakarta.* package.

In other words, please make absolutely sure that you don't randomly put JAR files of a different server in your WAR project such as tomcat-servlet-api-9.x.x.jar merely in order to get the javax.* package to compile. This will only cause trouble. Remove it altogether and edit the imports of your servlet class from

import javax.servlet.*;
import javax.servlet.http.*;

to

import jakarta.servlet.*;
import jakarta.servlet.http.*;

In case you're using Maven, you can find examples of proper pom.xml declarations for Tomcat 10+, Tomcat 9-, JEE 9+ and JEE 8- in this answer: Tomcat 9 casting servlets to javax.servlet.Servlet instead of jakarta.servlet.http.HttpServlet

Make sure compiled *.class file is present in built WAR

In case you're using a build tool such as Eclipse and/or Maven, then you need to make absolutely sure that the compiled servlet class file resides in its package structure in /WEB-INF/classes folder of the produced WAR file. In case of package com.example; public class YourServlet, it must be located in /WEB-INF/classes/com/example/YourServlet.class. Otherwise you will face in case of @WebServlet also a 404 error, or in case of <servlet> a HTTP 500 error like below:

HTTP Status 500

Error instantiating servlet class com.example.YourServlet

And find in the server log a java.lang.ClassNotFoundException: com.example.YourServlet, followed by a java.lang.NoClassDefFoundError: com.example.YourServlet, in turn followed by javax.servlet.ServletException: Error instantiating servlet class com.example.YourServlet.

An easy way to verify if the servlet is correctly compiled and placed in classpath is to let the build tool produce a WAR file (e.g. rightclick project, Export > WAR file in Eclipse) and then inspect its contents with a ZIP tool. If the servlet class is missing in /WEB-INF/classes, or if the export causes an error, then the project is badly configured or some IDE/project configuration defaults have been mistakenly reverted (e.g. Project > Build Automatically has been disabled in Eclipse).

You also need to make sure that the project icon has no red cross indicating a build error. You can find the exact error in Problems view (Window > Show View > Other...). Usually the error message is fine Googlable. In case you have no clue, best is to restart from scratch and do not touch any IDE/project configuration defaults. In case you're using Eclipse, you can find instructions in How do I import the javax.servlet API in my Eclipse project?

Test the servlet individually without any JSP/HTML page

Provided that the server runs on localhost:8080, and that the WAR is successfully deployed on a context path of /contextname (which defaults to the IDE project name, case sensitive!), and the servlet hasn't failed its initialization (read server logs for any deploy/servlet success/fail messages and the actual context path and servlet mapping), then a servlet with URL pattern of /servlet is available at http://localhost:8080/contextname/servlet.

You can just enter it straight in browser's address bar to test it invidivually. If its doGet() is properly overriden and implemented, then you will see its output in browser. Or if you don't have any doGet() or if it incorrectly calls super.doGet(), then a "HTTP 405: HTTP method GET is not supported by this URL" error will be shown (which is still better than a 404 as a 405 is evidence that the servlet itself is actually found).

Overriding service() is a bad practice, unless you're reinventing a MVC framework — which is very unlikely if you're just starting out with servlets and are clueless as to the problem described in the current question ;) See also Design Patterns web based applications.

Regardless, if the servlet already returns 404 when tested invidivually, then it's entirely pointless to try with a HTML form instead. Logically, it's therefore also entirely pointless to include any HTML form in questions about 404 errors from a servlet.

Use domain-relative URL to reference servlet from HTML

Once you've verified that the servlet works fine when invoked individually, then you can advance to HTML. As to your concrete problem with the HTML form, the <form action> value needs to be a valid URL. The same applies to <a href>. You need to understand how absolute/relative URLs work. You know, an URL is a web address as you can enter/see in the webbrowser's address bar. If you're specifying a relative URL as form action, i.e. without the http:// scheme, then it becomes relative to the current URL as you see in your webbrowser's address bar. It's thus absolutely not relative to the JSP/HTML file location in server's WAR folder structure as many starters seem to think.

So, assuming that the JSP page with the HTML form is opened by http://localhost:8080/contextname/jsps/page.jsp, and you need to submit to a servlet located in http://localhost:8080/contextname/servlet, here are several cases (note that you can safely substitute <form action> with <a href> here):

• Form action submits to an URL with a leading slash.

    <form action="/servlet">
  

  The leading slash / makes the URL relative to the domain, thus the form will submit to

    http://localhost:8080/servlet
  

  But this will likely result in a 404 as it's in the wrong context.

  ---

• Form action submits to an URL without a leading slash.

    <form action="servlet">
  

  This makes the URL relative to the current folder of the current URL, thus the form will submit to

    http://localhost:8080/contextname/jsps/servlet
  

  But this will likely result in a 404 as it's in the wrong folder.

  ---

• Form action submits to an URL which goes one folder up.

    <form action="../servlet">
  

  This will go one folder up (exactly like as in local disk file system paths!), thus the form will submit to

    http://localhost:8080/contextname/servlet
  

  This one must work!

  ---

• The canonical approach, however, is to make the URL domain-relative so that you don't need to fix the URLs once again when you happen to move the JSP files around into another folder.

    <form action="${pageContext.request.contextPath}/servlet">
  

  This will generate

    <form action="/contextname/servlet">
  

  Which will thus always submit to the right URL.

  ---

Use straight quotes in HTML attributes

You need to make absolutely sure you're using straight quotes in HTML attributes like action="..." or action='...' and thus not curly quotes like action=”...” or action=’...’. Curly quotes are not supported in HTML and they will simply become part of the value. Watch out when copy-pasting code snippets from blogs! Some blog engines, notably Wordpress, are known to by default use so-called "smart quotes" which thus also corrupts the quotes in code snippets this way. On the other hand, instead of copy-pasting code, try simply typing over the code yourself. Additional advantage of actually getting the code through your brain and fingers is that it will make you to remember and understand the code much better in long term and also make you a better developer.

See also:

• Our servlets wiki page - Contains some hello world examples
• How to call servlet class from HTML form
• doGet and doPost in Servlets
• How do I pass current item to Java method by clicking a hyperlink or button in JSP page?

Other cases of HTTP Status 404 error:

• HTTP Status 404 - Servlet [ServletName] is not available
• HTTP Status 404 - The requested resource (/ProjectName/) is not available
• HTTP Status 404 - The requested resource (/) is not available
• JSP in /WEB-INF returns "HTTP Status 404 The requested resource is not available"
• Referencing a resource placed in WEB-INF folder in JSP file returns HTTP 404 on resource
• Browser can't access/find relative resources like CSS, images and links when calling a Servlet which forwards to a JSP

Just to add to the other answers, the documentation gives this explanation:

• KEY is normally a synonym for INDEX. The key attribute PRIMARY KEY can also be specified as just KEY when given in a column definition. This was implemented for compatibility with other database systems.

• A UNIQUE index creates a constraint such that all values in the index must be distinct. An error occurs if you try to add a new row with a key value that matches an existing row. For all engines, a UNIQUE index permits multiple NULL values for columns that can contain NULL.

• A PRIMARY KEY is a unique index where all key columns must be defined as NOT NULL. If they are not explicitly declared as NOT NULL, MySQL declares them so implicitly (and silently). A table can have only one PRIMARY KEY. The name of a PRIMARY KEY is always PRIMARY, which thus cannot be used as the name for any other kind of index.

the only solution for me was:

click on window->close all perspective (you can try also close perspective)

after this, in the top right corner click on: open perspective->resource

done

For me this meant I was running this:

a = Mockito.mock(SomeClass.class);
b = new RealClass();
when(b.method1(a)).thenReturn(c); 
// within this method1, it calls param1.method2() -- note, b is not a spy or mock

So what was happening is that mockito was detecting that a.method2() was being called, and telling me I couldn't return c from a.method2() which is wrong.

Fix: use the doReturn(c).when(b).method1(a) style syntax (instead of when(b.method1(a)).thenReturn(c);), which will help you discover the hidden bug more concisely and quickly.

Or in this particular case, after doing that it started showing the more accurate "NotAMockException", and I changed it to not longer try to set a return value from a non-mock object.

Below code will do the job if anyone wants to load a custom View with XIB Programmatically.

let customView = UINib(nibName:"CustomView",bundle:.main).instantiate(withOwner: nil, options: nil).first as! UIView
customView.frame = self.view.bounds
self.view.addSubview(customView)

In order to move to D drive in windows use, C:\Users\Balaji>d:

In order to move to E drive use, C:\Users\Balaji>e:

same will be applicable for other drives.

You can use JPQL as well as JPA Criteria API for any kind of DTO projection(Mapping only selected columns to a DTO class) . Look at below code snippets showing how to selectively select various columns instead of selecting all columns . These example also show how to select various columns from joining multiple columns . I hope this helps .

JPQL code :

String dtoProjection = "new com.katariasoft.technologies.jpaHibernate.college.data.dto.InstructorDto"
                + "(i.id, i.name, i.fatherName, i.address, id.proofNo, "
                + " v.vehicleNumber, v.vechicleType, s.name, s.fatherName, "
                + " si.name, sv.vehicleNumber , svd.name) ";

        List<InstructorDto> instructors = queryExecutor.fetchListForJpqlQuery(
                "select " + dtoProjection + " from Instructor i " + " join i.idProof id " + " join i.vehicles v "
                        + " join i.students s " + " join s.instructors si " + " join s.vehicles sv "
                        + " join sv.documents svd " + " where i.id > :id and svd.name in (:names) "
                        + " order by i.id , id.proofNo , v.vehicleNumber , si.name , sv.vehicleNumber , svd.name ",
                CollectionUtils.mapOf("id", 2, "names", Arrays.asList("1", "2")), InstructorDto.class);

        if (Objects.nonNull(instructors))
            instructors.forEach(i -> i.setName("Latest Update"));

        DataPrinters.listDataPrinter.accept(instructors);

JPA Criteria API code :

@Test
    public void fetchFullDataWithCriteria() {
        CriteriaBuilder cb = criteriaUtils.criteriaBuilder();
        CriteriaQuery<InstructorDto> cq = cb.createQuery(InstructorDto.class);

        // prepare from expressions
        Root<Instructor> root = cq.from(Instructor.class);
        Join<Instructor, IdProof> insIdProofJoin = root.join(Instructor_.idProof);
        Join<Instructor, Vehicle> insVehicleJoin = root.join(Instructor_.vehicles);
        Join<Instructor, Student> insStudentJoin = root.join(Instructor_.students);
        Join<Student, Instructor> studentInsJoin = insStudentJoin.join(Student_.instructors);
        Join<Student, Vehicle> studentVehicleJoin = insStudentJoin.join(Student_.vehicles);
        Join<Vehicle, Document> vehicleDocumentJoin = studentVehicleJoin.join(Vehicle_.documents);

        // prepare select expressions.
        CompoundSelection<InstructorDto> selection = cb.construct(InstructorDto.class, root.get(Instructor_.id),
                root.get(Instructor_.name), root.get(Instructor_.fatherName), root.get(Instructor_.address),
                insIdProofJoin.get(IdProof_.proofNo), insVehicleJoin.get(Vehicle_.vehicleNumber),
                insVehicleJoin.get(Vehicle_.vechicleType), insStudentJoin.get(Student_.name),
                insStudentJoin.get(Student_.fatherName), studentInsJoin.get(Instructor_.name),
                studentVehicleJoin.get(Vehicle_.vehicleNumber), vehicleDocumentJoin.get(Document_.name));

        // prepare where expressions.
        Predicate instructorIdGreaterThan = cb.greaterThan(root.get(Instructor_.id), 2);
        Predicate documentNameIn = cb.in(vehicleDocumentJoin.get(Document_.name)).value("1").value("2");
        Predicate where = cb.and(instructorIdGreaterThan, documentNameIn);

        // prepare orderBy expressions.
        List<Order> orderBy = Arrays.asList(cb.asc(root.get(Instructor_.id)),
                cb.asc(insIdProofJoin.get(IdProof_.proofNo)), cb.asc(insVehicleJoin.get(Vehicle_.vehicleNumber)),
                cb.asc(studentInsJoin.get(Instructor_.name)), cb.asc(studentVehicleJoin.get(Vehicle_.vehicleNumber)),
                cb.asc(vehicleDocumentJoin.get(Document_.name)));

        // prepare query
        cq.select(selection).where(where).orderBy(orderBy);
        DataPrinters.listDataPrinter.accept(queryExecutor.fetchListForCriteriaQuery(cq));

    }

I know this is an old post however thought I'd throw my simple solution into the mix since no one has suggested it.

I use the current directory to determine the current environment then flip the connection string and environment variable. This works great so long as you have a naming convention for your site folders such as test/beta/sandbox.

    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
    {
        var dir = Environment.CurrentDirectory;
        string connectionString;

        if (dir.Contains("test", StringComparison.OrdinalIgnoreCase))
        {
            connectionString = new ConnectionStringBuilder(server: "xxx", database: "xxx").ConnectionString;
            Environment.SetEnvironmentVariable("ASPNETCORE_ENVIRONMENT", "Development");
        }
        else
        {
            connectionString = new ConnectionStringBuilder(server: "xxx", database: "xxx").ConnectionString;
            Environment.SetEnvironmentVariable("ASPNETCORE_ENVIRONMENT", "Production");
        }

        optionsBuilder.UseSqlServer(connectionString);
        optionsBuilder.UseLazyLoadingProxies();
        optionsBuilder.EnableSensitiveDataLogging();
    }

Using sed:

T=$(printf "\t")
sed "s/[[:blank:]]\+/$T/g"

or

sed "s/[[:space:]]\+/$T/g"

You can try this:

td p {word-break:break-all;}

This, however, makes it appear like this when there's enough space, unless you add a <br> tag:

aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb

So, I would then suggest adding <br> tags where there are newlines, if possible.

aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb

http://jsfiddle.net/LLyH3/3/

Also, if this doesn't solve your problem, there's a similar thread here.

JavaScript/jQuery doesn't support the default behavior of links "clicked" programmatically.

Instead, you can create a form and submit it. This way you don't have to use window.location or window.open, which are often blocked as unwanted popups by browsers.

This script has two different methods: one that tries to open three new tabs/windows (it opens only one in Internet Explorer and Chrome, more information is below) and one that fires a custom event on a link click.

Here is how:

HTML

<html>
<head>
    <script src="jquery-1.9.1.min.js" type="text/javascript"></script>
    <script src="script.js" type="text/javascript"></script>
</head>

<body>
    <button id="testbtn">Test</button><br><br>

    <a href="https://google.nl">Google</a><br>
    <a href="http://en.wikipedia.org/wiki/Main_Page">Wikipedia</a><br>
    <a href="https://stackoverflow.com/">Stack Overflow</a>
</body>

</html>

jQuery (file script.js)

$(function()
{
    // Try to open all three links by pressing the button
    // - Firefox opens all three links
    // - Chrome only opens one of them without a popup warning
    // - Internet Explorer only opens one of them WITH a popup warning
    $("#testbtn").on("click", function()
    {
        $("a").each(function()
        {
            var form = $("<form></form>");
            form.attr(
            {
                id     : "formform",
                action : $(this).attr("href"),
                method : "GET",
                // Open in new window/tab
                target : "_blank"
            });

            $("body").append(form);
            $("#formform").submit();
            $("#formform").remove();
        });
    });

    // Or click the link and fire a custom event
    // (open your own window without following 
    // the link itself)
    $("a").on("click", function()
    {
        var form = $("<form></form>");
        form.attr(
        {
            id     : "formform",
            // The location given in the link itself
            action : $(this).attr("href"),
            method : "GET",
            // Open in new window/tab
            target : "_blank"
        });

        $("body").append(form);
        $("#formform").submit();
        $("#formform").remove();

        // Prevent the link from opening normally
        return false;
    });
});

For each link element, it:

1. Creates a form
2. Gives it attributes
3. Appends it to the DOM so it can be submitted
4. Submits it
5. Removes the form from the DOM, removing all traces *Insert evil laugh*

Now you have a new tab/window loading "https://google.nl" (or any URL you want, just replace it). Unfortunately when you try to open more than one window this way, you get an Popup blocked messagebar when trying to open the second one (the first one is still opened).

More information on how I got to this method is found here:

• Opening new window/tab without using window.open or window.location.href

I'm using Version 4.0.2.15 with Build 15.21

For me I needed this:

UPDATE table_name SET column_name = REPLACE(column_name,"search str","replace str");

Putting t.column_name in the first argument of replace did not work.

value = value.setScale(2, RoundingMode.CEILING)

In C++, you can access any address, but it doesn't mean you should. The address you are accessing is no longer valid. It works because nothing else scrambled the memory after foo returned, but it could crash under many circumstances. Try analyzing your program with Valgrind, or even just compiling it optimized, and see...

To get the Color from Hex.

using System.Windows.Media;

Color color = (Color)ColorConverter.ConvertFromString("#FFDFD991");

and then set the foreground

textBlock.Foreground = new System.Windows.Media.SolidColorBrush(color); 

If you need that each div will have its own toggle and don't want clicks to affect other divs, do this:

Here's what I did to solve this...

<div [ngClass]="{'teaser': !teaser_1 }" (click)="teaser_1=!teaser_1">
...content...
</div>

<div [ngClass]="{'teaser': !teaser_2 }" (click)="teaser_2=!teaser_2">
...content...
</div>

<div [ngClass]="{'teaser': !teaser_3 }" (click)="teaser_3=!teaser_3">
...content...
</div>

it requires custom numbering which sucks, but it works.

Yes. Click on the object (textbox, shape, etc.) to select the object and in the Drawing Tools | Format tab, click on Selection Pane in the Arrange group. From there, you'll see names of objects - you can double click (or press F2) on any name and rename it. By deselecting it, it becomes renamed. You can also get to this from the Home tab -> Drawing group -> Arrange drop-down -> Selection pane or by pressing ALT + F10.

var day = value.Date; // a DateTime that will just be whole days
var time = value.TimeOfDay; // a TimeSpan that is the duration into the day

I usually do this and works always.

/try this/

for (i = res; i < *size-1; i++) { 

    arrb[i] = arrb[i + 1];
}

*size = *size - 1; /*in some ides size -- could give problems*/

You can use chomp to merge multiple line in single line:

perl -e 'while (<>) { if (/\$/ ) { chomp; } print ;}' bad0 >test

put line break condition in if statement.It can be special character or any delimiter.

Macro to find endiannes

#define ENDIANNES() ((1 && 1 == 0) ? printf("Big-Endian"):printf("Little-Endian"))

or

#include <stdio.h>

#define ENDIAN() { \
volatile unsigned long ul = 1;\
volatile unsigned char *p;\
p = (volatile unsigned char *)&ul;\
if (*p == 1)\
puts("Little endian.");\
else if (*(p+(sizeof(unsigned long)-1)) == 1)\
puts("Big endian.");\
else puts("Unknown endian.");\
}

int main(void) 
{
       ENDIAN();
       return 0;
}

With Project JUnion you can use structs in Java by annotating a class with @Struct annotation

@Struct
class Member {
  string FirstName; 
  string LastName;  
  int BirthYear; 
}

More info at the project's website: https://tehleo.github.io/junion/

Try this:

sudo chmod +x program_name
./program_name 

WinSCP has the command line functionality:

c:\>winscp.exe /console /script=example.txt

where scripting is done in example.txt.

See http://winscp.net/eng/docs/guide_automation

Refer to http://winscp.net/eng/docs/guide_automation_advanced for details on how to use a scripting language such as Windows command interpreter/php/perl.

FileZilla does have a command line but it is limited to only opening the GUI with a pre-defined server that is in the Site Manager.

Use npm-run.

From the readme:

npm-run

Find & run local executables from node_modules

Any executable available to an npm lifecycle script is available to npm-run.

Usage

$ npm install mocha # mocha installed in ./node_modules
$ npm-run mocha test/* # uses locally installed mocha executable 

Installation

$ npm install -g npm-run

You can not specify the password from the command line but you can do either using ssh keys or using sshpass as suggested by John C. or using a expect script.

To use sshpass, you need to install it first. Then

sshpass -f <(printf '%s\n' your_password) ssh user@hostname

instead of using sshpass -p your_password. As mentioned by Charles Duffy in the comments, it is safer to supply the password from a file or from a variable instead of from command line.

BTW, a little explanation for the <(command) syntax. The shell executes the command inside the parentheses and replaces the whole thing with a file descriptor, which is connected to the command's stdout. You can find more from this answer https://unix.stackexchange.com/questions/156084/why-does-process-substitution-result-in-a-file-called-dev-fd-63-which-is-a-pipe

This is how I did this on an existing table and column (named id):

UPDATE table SET id=ROWNUM;
DECLARE
  maxval NUMBER;
BEGIN
  SELECT MAX(id) INTO maxval FROM table;
  EXECUTE IMMEDIATE 'DROP SEQUENCE table_seq';
  EXECUTE IMMEDIATE 'CREATE SEQUENCE table_seq START WITH '|| TO_CHAR(TO_NUMBER(maxval)+1) ||' INCREMENT BY 1 NOMAXVALUE';
END;
CREATE TRIGGER table_trigger
  BEFORE INSERT ON table
  FOR EACH ROW
BEGIN
  :new.id := table_seq.NEXTVAL;
END;

@jstn's answer is good, but a bit verbose. Swift is known as a protocol-oriented language, so we can achieve the same result without having to implement boilerplate code for every class in the integer family, by adding a default implementation for the protocol extension.

public extension ExpressibleByIntegerLiteral {
    public static func arc4random() -> Self {
        var r: Self = 0
        arc4random_buf(&r, MemoryLayout<Self>.size)
        return r
    }
}

Now we can do:

let i = Int.arc4random()
let j = UInt32.arc4random()

and all other integer classes are ok.

As instance you could use it:

First(making ssh connection):

while read pass port user ip files directs; do
    sshpass -p$pass scp -o 'StrictHostKeyChecking no' -P $port $files $user@$ip:$directs
done <<____HERE
    PASS    PORT    USER    IP    FILES    DIRECTS
      .      .       .       .      .         .
      .      .       .       .      .         .
      .      .       .       .      .         .
    PASS    PORT    USER    IP    FILES    DIRECTS
____HERE

Second(executing commands):

while read pass port user ip; do
    sshpass -p$pass ssh -p $port $user@$ip <<ENDSSH1
    COMMAND 1
    .
    .
    .
    COMMAND n
ENDSSH1
done <<____HERE
    PASS    PORT    USER    IP
      .      .       .       .
      .      .       .       .
      .      .       .       .
    PASS    PORT    USER    IP    
____HERE

Third(executing commands):

Script=$'
#Your commands
'

while read pass port user ip; do
    sshpass -p$pass ssh -o 'StrictHostKeyChecking no' -p $port $user@$ip "$Script"

done <<___HERE
PASS    PORT    USER    IP
  .      .       .       .
  .      .       .       .
  .      .       .       .
PASS    PORT    USER    IP  
___HERE

Forth(using variables):

while read pass port user ip fileoutput; do
    sshpass -p$pass ssh -o 'StrictHostKeyChecking no' -p $port $user@$ip fileinput=$fileinput 'bash -s'<<ENDSSH1
    #Your command > $fileinput
    #Your command > $fileinput
ENDSSH1
done <<____HERE
    PASS    PORT    USER    IP      FILE-OUTPUT
      .      .       .       .          .
      .      .       .       .          .
      .      .       .       .          .
    PASS    PORT    USER    IP      FILE-OUTPUT
____HERE

Eclipse expects the declared package to match the directory hierarchy - so it's expecting your Java file to be in a directory called "Devices" under your source root. At the moment it looks like the file is directly in your source root. So create the appropriate directory, and move the file in there.

Note that conventionally, packages are in lower case and include your organization name in reverse DNS order, e.g.

com.foo.devices;

Wikipedia has a good article on this, and the official spec is here. From Wikipdia:

The local-part of the e-mail address may use any of these ASCII characters:

• Uppercase and lowercase English letters (a-z, A-Z)
• Digits 0 to 9
• Characters ! # $ % & ' * + - / = ? ^ _ ` { | } ~
• Character . (dot, period, full stop) provided that it is not the first or last character, and provided also that it does not appear two or more times consecutively.

Additionally, quoted-strings (ie: "John Doe"@example.com) are permitted, thus allowing characters that would otherwise be prohibited, however they do not appear in common practice. RFC 5321 also warns that "a host that expects to receive mail SHOULD avoid defining mailboxes where the Local-part requires (or uses) the Quoted-string form".

In your html :

<a href="javascript:void(0);" ng-click="go_back()">Go Back</a>

On your main controller :

$scope.go_back = function() { 
  $window.history.back();
};

When user click on Go Back link the controller function is called and it will go back to previous route.

By default, Valgrind writes its output to stderr. So you need to do something like:

valgrind a.out > log.txt 2>&1

Alternatively, you can tell Valgrind to write somewhere else; see http://valgrind.org/docs/manual/manual-core.html#manual-core.comment (but I've never tried this).

<a href="#" class="btnTest">Test</a>


.btnTest{
   background:url('images/icon.png') no-repeat left center;
   padding-left:20px;
}    

Please use --user at end of this, it is working fine for me.

pip install enum34 --user

OK, I found this post: http://msdn.microsoft.com/en-us/library/aa479319.aspx

with this very illustrative diagram:

_{(source: microsoft.com)}

in essence, to get at those exception details i need to store them myself in Global.asax, for later retrieval on my custom error page.

it seems the best way is to do the bulk of the work in Global.asax, with the custom error pages handling helpful content rather than logic.

This is another, though not necessarily "better", way:

Determining Your Current Version

To determine which Oracle client version you have installed on your pc, run sql*plus to connect to the DW. The folder names may vary somewhat based on your Oracle setup but should be similar. To run sql*plus choose start > programs > Oracle > Oracle - OUDWclient > Application Development > sqlplus. Enter your DW user name, password, and 'ordj' for the host name or service name. This should connect you to the DW via sqlplus. At this point, you could write your own sql statements to pull information from the DW (if you knew sql). The Oracle client version can be determined in the first line - 'SQL*Plus: Release 10.2.0.1.0'.

[Reference] Oracle Client Information http://www.ohio.edu/technology

on command line

 example$:python
 >>> import scipy
 >>> scipy.__version__
 '0.9.0'

how about this:

df = DataFrame({"pear": [1,2,3], "apple": [2,3,4], "orange": [3,4,5]})
out = np.argwhere(df.columns.isin(['apple', 'orange'])).ravel()
print(out)
[1 2]

Just make sure put single space before and after "and" Keyword..

Thanks all for your responses. I used HtmlRenderer external dll (library) to achieve the same and found below code for the same.

Here is the code for this

public void ConvertHtmlToImage()
{
   Bitmap m_Bitmap = new Bitmap(400, 600);
   PointF point = new PointF(0, 0);
   SizeF maxSize = new System.Drawing.SizeF(500, 500);
   HtmlRenderer.HtmlRender.Render(Graphics.FromImage(m_Bitmap),
                                           "<html><body><p>This is some html code</p>"
                                           + "<p>This is another html line</p></body>",
                                            point, maxSize);

   m_Bitmap.Save(@"C:\Test.png", ImageFormat.Png);
}

That code transforms any bootstrap table row that has data-href attribute set into a clickable element

Note: data-href attribute is a valid tr attribute (HTML5), href attributes on tr element are not.

$(function(){
    $('.table tr[data-href]').each(function(){
        $(this).css('cursor','pointer').hover(
            function(){ 
                $(this).addClass('active'); 
            },  
            function(){ 
                $(this).removeClass('active'); 
            }).click( function(){ 
                document.location = $(this).attr('data-href'); 
            }
        );
    });
});

using (StreamWriter writer = new StreamWriter(File.Open(@"E:\Sample.txt", FileMode.Append), Encoding.GetEncoding(1250)))  ////File.Create(path)
        {
            writer.Write("Sample Text");
        }

You should NOT use jQuery('selector').attr("tagName").toLowerCase(), because it only works in older versions of Jquery.

You could use $('selector').prop("tagName").toLowerCase() if you're certain that you're using a version of jQuery thats >= version 1.6.

Note :

You may think that EVERYONE is using jQuery 1.10+ or something by now (January 2016), but unfortunately that isn't really the case. For example, many people today are still using Drupal 7, and every official release of Drupal 7 to this day includes jQuery 1.4.4 by default.

So if do not know for certain if your project will be using jQuery 1.6+, consider using one of the options that work for ALL versions of jQuery :

Option 1 :

jQuery('selector')[0].tagName.toLowerCase()

Option 2

jQuery('selector')[0].nodeName.toLowerCase()

xxx.match(yyy, 'g').length

On recent versions of git on Ubuntu, you can enable diff-highlighting with:

sudo ln -s /usr/share/doc/git/contrib/diff-highlight/diff-highlight /usr/local/bin
sudo chmod a+x /usr/share/doc/git/contrib/diff-highlight/diff-highlight

And then adding this to your .gitconfig:

[pager]
    log = diff-highlight | less
    show = diff-highlight | less
    diff = diff-highlight | less

It's possible the script is located somewhere else in other distros, you can use locate diff-highlight to find out where.

Though this is an old post, I am posting how I resolved in case it helps others. Since I used sudo to do the install of the boto3 library the permissions on the boto3 directory was set to 700. Either change the permissions to be readable by others or run the python command as sudo.

I believe this would work. It takes const char*'s as a parameter.

//params find and replace cannot be NULL
void FindAndReplace( std::string& source, const char* find, const char* replace )
{
   //ASSERT(find != NULL);
   //ASSERT(replace != NULL);
   size_t findLen = strlen(find);
   size_t replaceLen = strlen(replace);
   size_t pos = 0;

   //search for the next occurrence of find within source
   while ((pos = source.find(find, pos)) != std::string::npos)
   {
      //replace the found string with the replacement
      source.replace( pos, findLen, replace );

      //the next line keeps you from searching your replace string, 
      //so your could replace "hello" with "hello world" 
      //and not have it blow chunks.
      pos += replaceLen; 
   }
}

DECLARE @LastChangeDate as date 
SET @LastChangeDate = GETDATE() 

# Make sure only root can run our script
if [ "$(id -u)" != "0" ]; then
   echo "This script must be run as root" 1>&2
   exit 1
fi

If you simply want to view the information in a convenient way, Red Gate's SQL Prompt might help.

If you hover over the object text in a query window SQL Prompt will display the MS_Description extended property text in a tooltip. Clicking on the tooltip will open a dialog displaying the column information and also the object's DDL.

http://www.red-gate.com/products/sql-development/sql-prompt/

Thought i'd add my solution that i've been using.

If you're using the System.Web.Script.Serialization.JavaScriptSerializer() then the time returned isn't going to be specific to your timezone. To fix this you'll also want to use dte.getTimezoneOffset() to get it back to your correct time.

String.prototype.toDateFromAspNet = function() {
    var dte = eval("new " + this.replace(/\//g, '') + ";");
    dte.setMinutes(dte.getMinutes() - dte.getTimezoneOffset());
    return dte;
}

now you'll just call

"/Date(1245398693390)/".toDateFromAspNet();

Fri Jun 19 2009 00:04:53 GMT-0400 (Eastern Daylight Time) {}

Try this,

$('td').click(function(){
   var row_index = $(this).parent().index();
   var col_index = $(this).index();
});

If you need the index of table contain td then you can change it to

var row_index = $(this).parent('table').index(); 

just make a function :

public Spanned fromHtml(String str){
  return Build.VERSION.SDK_INT >= 24 ? Html.fromHtml(str, Html.FROM_HTML_MODE_LEGACY) : Html.fromHtml(str);
}

Wanted to ADD to the other answers described here an additional note, in the case of custom exceptions.

In the case where you create your own custom exception, that derives from std::exception, when you catch "all possible" exceptions types, you should always start the catch clauses with the "most derived" exception type that may be caught. See the example (of what NOT to do):

#include <iostream>
#include <string>

using namespace std;

class MyException : public exception
{
public:
    MyException(const string& msg) : m_msg(msg)
    {
        cout << "MyException::MyException - set m_msg to:" << m_msg << endl;
    }

   ~MyException()
   {
        cout << "MyException::~MyException" << endl;
   }

   virtual const char* what() const throw () 
   {
        cout << "MyException - what" << endl;
        return m_msg.c_str();
   }

   const string m_msg;
};

void throwDerivedException()
{
    cout << "throwDerivedException - thrown a derived exception" << endl;
    string execptionMessage("MyException thrown");
    throw (MyException(execptionMessage));
}

void illustrateDerivedExceptionCatch()
{
    cout << "illustrateDerivedExceptionsCatch - start" << endl;
    try 
    {
        throwDerivedException();
    }
    catch (const exception& e)
    {
        cout << "illustrateDerivedExceptionsCatch - caught an std::exception, e.what:" << e.what() << endl;
        // some additional code due to the fact that std::exception was thrown...
    }
    catch(const MyException& e)
    {
        cout << "illustrateDerivedExceptionsCatch - caught an MyException, e.what::" << e.what() << endl;
        // some additional code due to the fact that MyException was thrown...
    }

    cout << "illustrateDerivedExceptionsCatch - end" << endl;
}

int main(int argc, char** argv)
{
    cout << "main - start" << endl;
    illustrateDerivedExceptionCatch();
    cout << "main - end" << endl;
    return 0;
}

NOTE:

0) The proper order should be vice-versa, i.e.- first you catch (const MyException& e) which is followed by catch (const std::exception& e).

1) As you can see, when you run the program as is, the first catch clause will be executed (which is probably what you did NOT wanted in the first place).

2) Even though the type caught in the first catch clause is of type std::exception, the "proper" version of what() will be called - cause it is caught by reference (change at least the caught argument std::exception type to be by value - and you will experience the "object slicing" phenomena in action).

3) In case that the "some code due to the fact that XXX exception was thrown..." does important stuff WITH RESPECT to the exception type, there is misbehavior of your code here.

4) This is also relevant if the caught objects were "normal" object like: class Base{}; and class Derived : public Base {}...

5) g++ 7.3.0 on Ubuntu 18.04.1 produces a warning that indicates the mentioned issue:

In function ‘void illustrateDerivedExceptionCatch()’: item12Linux.cpp:48:2: warning: exception of type ‘MyException’ will be caught catch(const MyException& e) ^~~~~

item12Linux.cpp:43:2: warning: by earlier handler for ‘std::exception’ catch (const exception& e) ^~~~~

Again, I will say, that this answer is only to ADD to the other answers described here (I thought this point is worth mention, yet could not depict it within a comment).

For me save_queries option was turned off so,

$this->db->save_queries = TRUE; //Turn ON save_queries for temporary use.
$str = $this->db->last_query();
echo $str;

Ref: Can't get result from $this->db->last_query(); codeigniter

Issue the following command,the way to run specified logrotate:

logrotate -vf /etc/logrotate.d/custom

Options:

-v :show the process

-f :forcing run

custom :user-defined log setting

eg: mongodb-log

# mongodb-log rotate

/data/var/log/mongodb/mongod.log {
    daily
    dateext
    rotate 30
    copytruncate
    missingok
}

This was apparently always possible in .net core 1.0 with Microsoft.AspNetCore.Http.Extensions, which adds extension to HttpRequest to get full URL; GetEncodedUrl.

e.g. from razor view:

@using Microsoft.AspNetCore.Http.Extensions
...
<a href="@Context.Request.GetEncodedUrl()">Link to myself</a>

Since 2.0, also have relative path and query GetEncodedPathAndQuery.

I'm using the function below at various points. Works in a div or button elements in a table as long as the right selector is used. Just ":button" would not re-enable for me.

function ToggleMenuButtons(bActivate) {
    if (bActivate == true) {
        $("#SelectorId :input[type='button']").prop("disabled", true);
    } else {
        $("#SelectorId :input[type='button']").removeProp("disabled");
    }
}

In my case, I had copied some code from another project that was using Automapper - took me ages to work that one out. Just had to add automapper nuget package to project.

I have solved this problem like.

if($_SERVER['REQUEST_METHOD'] == 'OPTIONS' && ENV == 'devel') {
    header('Access-Control-Allow-Origin: *');
    header('Access-Control-Allow-Headers: X-Requested-With');
    header("HTTP/1.1 200 OK");
    die();
}

It is only for development. With this I am waiting 9ms and 500ms and not 8s and 500ms. I can do that because production JS app will be on the same machine as production so there will be no OPTIONS but development is my local.

Couldn't find any definitive reference, but I see that the example code for os.walk uses os.path but only imports os

Unfortunately using an XML drawable and overriding the background means you have to explicitly set the colour instead of being able to use the app style colours.

Rather than hardcode the button colours for every behaviour I opted to hardcode the corner radius, which feels marginally less hacky and retains all the default button behaviour (changing colour when it's pressed and other visual effects) and uses the app style colours by default:

1. Set android:layout_height and android:layout_width to the same value

2. Set app:cornerRadius to half of the height/width

   (It actually appears that anything greater than or equal to half of the height/width works, so to avoid having to change the radius every time you update the height/width, you could instead set it to a very high value such as 1000dp, the risk being it could break if this behaviour ever changes.)

3. Set android:insetBottom and android:insetTop to 0dp to get a perfect circle

For example:

<Button
    android:insetBottom="0dp"
    android:insetTop="0dp"
    android:layout_height="150dp"
    android:layout_width="150dp"
    app:cornerRadius="75dp"
    />

I think you can try add parameter axis=1 to concat, because output of df.iloc[0,:] and df.iloc[-1,:] are Series and transpose by T:

print df.iloc[0,:]
a    1
b    a
Name: 0, dtype: object

print df.iloc[-1,:]
a    4
b    d
Name: 3, dtype: object

print pd.concat([df.iloc[0,:], df.iloc[-1,:]], axis=1)
   0  3
a  1  4
b  a  d

print pd.concat([df.iloc[0,:], df.iloc[-1,:]], axis=1).T
   a  b
0  1  a
3  4  d

The following steps install the IDE and remove the error java.lang.NullPointerException thrown while loading gnu.io.RXTXCommDriver which usually comes with arduino installed with apt-get command in Ubuntu.

Install the IDE

sudo apt-get install arduino

for removing java error in IDE

sudo add-apt-repository ppa:webupd8team/java
sudo apt update
sudo apt install oracle-java8-set-default

This also shows the Serial Port which was grayed out due to the error.

For me, this is the most useful way to understand the three property types:

Public: Use this when you are OK with this variable being directly accessed and changed from anywhere in your code.

Example usage from outside of the class:

$myObject = new MyObject()
$myObject->publicVar = 'newvalue';
$pubVar = $myObject->publicVar;

Protected: Use this when you want to force other programmers (and yourself) to use getters/setters outside of the class when accessing and setting variables (but you should be consistent and use the getters and setters inside the class as well). This or private tend to be the default way you should set up all class properties.

Why? Because if you decide at some point in the future (maybe even in like 5 minutes) that you want to manipulate the value that is returned for that property or do something with it before getting/setting, you can do that without refactoring everywhere you have used it in your project.

Example usage from outside of the class:

$myObject = new MyObject()
$myObject->setProtectedVar('newvalue');
$protectedVar = $myObject->getProtectedVar();

Private: private properties are very similar to protected properties. But the distinguishing feature/difference is that making it private also makes it inaccessible to child classes without using the parent class's getter or setter.

So basically, if you are using getters and setters for a property (or if it is used only internally by the parent class and it isn't meant to be accessible anywhere else) you might as well make it private, just to prevent anyone from trying to use it directly and introducing bugs.

Example usage inside a child class (that extends MyObject):

$this->setPrivateVar('newvalue');
$privateVar = $this->getPrivateVar();

This should do the trick:

pw_bytes.decode("utf-8")

You must return something

instead of this (this is not the right way)

const def = (props) => { <div></div> };

try

const def = (props) => ( <div></div> );

or use return statement

const def = (props) => { return  <div></div> };

For simplicity you could create an extension:-

    public static SolidColorBrush ToSolidColorBrush(this string hex_code)
    {
        return (SolidColorBrush)new BrushConverter().ConvertFromString(hex_code);
    }

And then to use:-

 SolidColorBrush accentBlue = "#3CACDC".ToSolidColorBrush();

If an Activity calls onPause with a normal broadcast, receiving the Broadcast can be missed. A sticky broadcast can be checked after it was initiated in onResume.

Update 6/23/2020

Sticky broadcasts are deprecated.

See sendStickyBroadcast documentation.

This method was deprecated in API level 21.

Sticky broadcasts should not be used. They provide no security (anyone can access them), no protection (anyone can modify them), and many other problems. The recommended pattern is to use a non-sticky broadcast to report that something has changed, with another mechanism for apps to retrieve the current value whenever desired.

Implement

Intent intent = new Intent("some.custom.action");
intent.putExtra("some_boolean", true);
sendStickyBroadcast(intent);

Resources

• Related post: What is the difference between sendStickyBroadcast and sendBroadcast in Android?

• See removeStickyBroadcast(Intent), and on API Level 5 +, isInitialStickyBroadcast() for usage in the Receiver's onReceive.

IIS7 defines a defaultDocument section in its configuration files which can be found in the %WinDir%\System32\InetSrv\Config folder. Most likely, the file index.aspx is already defined as a default document in one of IIS7's configuration files and you are adding it again in your web.config.

I suspect that removing the line <add value="index.aspx" />

from the defaultDocument/files section will fix your issue.

The defaultDocument section of your config will look like:

<defaultDocument>
  <files>
    <remove value="default.aspx" />
    <remove value="index.html" />
    <remove value="iisstart.htm" />
    <remove value="index.htm" />
    <remove value="Default.asp" />
    <remove value="Default.htm" />
  </files>
</defaultDocument>

Note that index.aspx will still appear in the list of default documents for your site in the IIS manager.

For more information about IIS7 configuration, click here.

Using a top-level function, you can achieve exactly the same call syntax as in Ruby (as you wish):

fun rand(s: Int, e: Int) = Random.nextInt(s, e + 1)

Usage:

rand(1, 3) // returns either 1, 2 or 3

You could always check out JMF (Java Media Framework). It is pretty old and abandoned, but it works and I've used it for apps before. Looks like it handles what you're asking for.

I needed a fat static lib for JsonKit so created a static lib project in Xcode and then ran this bash script in the project directory. So long as you've configured the xcode project with "Build active configuration only" turned off, you should get all architectures in one lib.

#!/bin/bash
xcodebuild -sdk iphoneos
xcodebuild -sdk iphonesimulator
lipo -create -output libJsonKit.a build/Release-iphoneos/libJsonKit.a build/Release-iphonesimulator/libJsonKit.a

I know this has been answered ages ago but I found the question while trying to incorporate an ssh login in a bash script and once logged in run a few commands and log back out and continue with the bash script. The simplest way I found which hasnt been mentioned elsewhere because it is so trivial is to do this.

#!/bin/bash

sshpass -p "password" ssh user@server 'cd /path/to/dir;somecommand;someothercommand;exit;'

That's not how it works.

This bit ('AND' and 'OR' and 'NOT') will evaluate as 'NOT'. So your code is equivalent to::

while not 'NOT' in list: print 'No boolean operator'

You could try this:

while not set('AND' and 'OR' and 'NOT').union(list): print 'No boolean operator'

 moment(dateString, 'YYYY-MM-DD', true).isValid() ||
 moment(dateString, 'YYYY-M-DD', true).isValid() ||
 moment(dateString, 'YYYY-MM-D', true).isValid();

Http GET returning 204 is perfectly fine, and so is returning 404.

The important thing is that you define the design standards/guidelines for your API, so that all your endpoints use status codes consistently.

For example:

• you may indicate that a GET endpoint that returns a collection of resources will return 204 if the collection is empty. In this case GET /complaints/year/2019/month/04 may return 204 if there are no complaints filed in April 2019. This is not an error on the client side, so we return a success status code (204). OTOH, GET /complaints/12345 may return 404 if complaint number 12345 doesn't exist.
• if your API uses HATEOAS, 204 is probably a bad idea because the response should contain links to navigate to other states.

Try this:

StreamWriter file2 = new StreamWriter(@"c:\file.txt", true);
file2.WriteLine(someString);
file2.Close();

You can use this bootstrap component:

http://jasny.github.io/bootstrap/javascript/#rowlink

Jasny Bootstrap

The missing components for your favorite front-end framework.

<table class="table table-striped table-bordered table-hover">
  <thead>
    <tr><th>Name</th><th>Description</th><th>Actions</th></tr>
  </thead>
  <tbody data-link="row" class="rowlink">
    <tr><td><a href="#inputmask">Input mask</a></td><td>Input masks can be used to force the user to enter data conform a specific format.</td><td class="rowlink-skip"><a href="#">Action</a></td></tr>
    <tr><td><a href="http://www.jasny.net/" target="_blank">jasny.net</a></td><td>Shared knowledge of Arnold Daniels aka Jasny.</td><td class="rowlink-skip"><a href="#">Action</a></td></tr>
    <tr><td><a href="#rowlinkModal" data-toggle="modal">Launch modal</a></td><td>Toggle a modal via JavaScript by clicking this row.</td><td class="rowlink-skip"><a href="#">Action</a></td></tr>
  </tbody>
</table>

Usage

Via data attributes

Add class .rowlink and attribute data-link="row" to a <table> or <tbody> element. For other options append the name to data-, as in data-target="a.mainlink" A cell can be excluded by adding the .rowlink-skip class to the <td>.

Via JavaScript

Call the input mask via javascript:

$('tbody.rowlink').rowlink()

Page content can be displayed easily and perfectly this way:

<?php if(have_posts()) : ?>
    <?php while(have_posts())  : the_post(); ?>
      <h2><?php the_title(); ?></h2>                        
      <?php the_content(); ?>          
      <?php comments_template( '', true ); ?> 
    <?php endwhile; ?>                   
      <?php else : ?>                       
        <h3><?php _e('404 Error&#58; Not Found'); ?></h3>
<?php endif; ?>         

Note:

In terms of displaying content - i) comments_template() function is an optional use if you need to enable commenting with different functionality.

ii) _e() function is also optional but more meaningful & effective than just showing text through <p>. while preferred stylized 404.php can be created to be redirected.

Just click the button to download using following code.

in html

<a class="btn" ng-click="saveJSON()" ng-href="{{ url }}">Export to JSON</a>

In controller

$scope.saveJSON = function () {_x000D_
   $scope.toJSON = '';_x000D_
   $scope.toJSON = angular.toJson($scope.data);_x000D_
   var blob = new Blob([$scope.toJSON], { type:"application/json;charset=utf-8;" });   _x000D_
   var downloadLink = angular.element('<a></a>');_x000D_
                        downloadLink.attr('href',window.URL.createObjectURL(blob));_x000D_
                        downloadLink.attr('download', 'fileName.json');_x000D_
   downloadLink[0].click();_x000D_
  };

There is a CSS unit called viewport height / viewport width.

Example

.mainbody{height: 100vh;} similarly html,body{width: 100vw;}

or 90vh = 90% of the viewport height.

**IE9+ and most modern browsers.

I have used this:

document.onkeydown = keyboardDown;
document.onkeyup = keyboardUp;
document.oncontextmenu = function(e){
 var evt = new Object({keyCode:93});
 stopEvent(e);
 keyboardUp(evt);
}
function stopEvent(event){
 if(event.preventDefault != undefined)
  event.preventDefault();
 if(event.stopPropagation != undefined)
  event.stopPropagation();
}
function keyboardDown(e){
 ...
}
function keyboardUp(e){
 ...
}

Then I catch e.keyCode property in those two last functions - if e.keyCode == 93, I know that the user either released the right mouse button or pressed/released the Context Menu key.

Hope it helps.

Where you say you're changing the value of the first element;

x = Integer.valueOf(9);

You're changing x to point to an entirely new Integer, but never using it again. You're not changing the collection in any way.

Since you're working with ArrayList, you can use ListIterator if you want an iterator that allows you to change the elements, this is the snippet of your code that would need to be changed;

//initialize the Iterator
ListIterator<Integer> i = a.listIterator();

//changed the value of frist element in List
if(i.hasNext()) {
    i.next();
    i.set(Integer.valueOf(9));    // Change the element the iterator is currently at
}

// New iterator, and print all the elements
Iterator iter = a.iterator();
while(iter.hasNext())
    System.out.print(iter.next());

>> 912345678

Sadly the same cannot be extended to other collections like Set<T>. Implementation details (a HashSet for example being implemented as a hash table and changing the object could change the hash value and therefore the iteration order) makes Set<T> a "add new/remove only" type of data structure, and changing the content at all while iterating over it is not safe.

I kept using this all this time

Import-module .\build_functions.ps1 -Force

Having html collection of selects you can check if every select has option with specific value and filter those which don't match condition:

//get select collection:
let selects = $('select')
//reduce if select hasn't at least one option with value 1
.filter(function () { return [...this.children].some(el => el.value == 1) });

To combine bitmasks you want to use bitwise-or. In the trivial case where every value you combine has exactly 1 bit on (like your example), it's equivalent to adding them. If you have overlapping bits however, or'ing them handles the case gracefully.

To decode the bitmasks you and your value with a mask, like so:

if(val & (1<<1)) SusanIsOn();
if(val & (1<<2)) BobIsOn();
if(val & (1<<3)) KarenIsOn();

the following possible configs are located in /etc/wgetrc just uncomment and use...

# You can set the default proxies for Wget to use for http, https, and ftp.
# They will override the value in the environment.
#https_proxy = http://proxy.yoyodyne.com:18023/
#http_proxy = http://proxy.yoyodyne.com:18023/
#ftp_proxy = http://proxy.yoyodyne.com:18023/

# If you do not want to use proxy at all, set this to off.
#use_proxy = on

That's better, you can use any div count.

.col-xs-2{_x000D_
    background:#00f;_x000D_
    color:#FFF;_x000D_
}_x000D_
_x000D_
.col_item {_x000D_
    margin-left:4.166666667%_x000D_
}_x000D_
.col_item:first-child,_x000D_
.col_item:nth-child(5n+1) {_x000D_
    margin-left: 0;_x000D_
}

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" rel="stylesheet"/>_x000D_
<div class="container">_x000D_
    <div class="row" style="border: 1px solid red">_x000D_
        <div class="col-xs-2 col_item" id="p1">One</div>_x000D_
        <div class="col-xs-2 col_item" id="p2">Two</div>_x000D_
        <div class="col-xs-2 col_item" id="p3">Three</div>_x000D_
        <div class="col-xs-2 col_item" id="p4">Four</div>_x000D_
        <div class="col-xs-2 col_item" id="p5">Five</div>_x000D_
        <div class="col-xs-2 col_item" id="p5">One</div>_x000D_
    </div>_x000D_
</div>

It should run properly at cron also. Please check below things.

1- You are editing proper file to set cron.

2- You have given proper permission(execute permission) to script mean your script is executable.

It happens that I'm just starting to learn coding and I needed something similar as you have just asked in SQLite (I´m using [SQLiteStudio] (3.1.1)).

It happens that you must define the column's 'Constraint' as 'Not Null' then entering your desired definition using 'Default' 'Constraint' or it will not work (I don't know if this is an SQLite or the program requirment).

Here is the code I used:

CREATE TABLE <MY_TABLE> (
<MY_TABLE_KEY>       INTEGER    UNIQUE
                                PRIMARY KEY,
<MY_TABLE_SERIAL>    TEXT       DEFAULT (<MY_VALUE>) 
                                NOT NULL
<THE_REST_COLUMNS>
);

break will exit only the innermost loop containing it.

You can use goto to break out of any number of loops.

Of course goto is often Considered Harmful.

is it proper to use the break function[...]?

Using break and goto can make it more difficult to reason about the correctness of a program. See here for a discussion on this: Dijkstra was not insane.

Since Express 4.0, there's a dedicated sendStatus function:

res.sendStatus(404);

If you're using an earlier version of Express, use the status function instead.

res.status(404).send('Not found');

There are two solutions for it.

Solution number one: 1.Recreate the project. While creating a project ensure that precompiled header is checked(Application settings... *** Do not check empty project)

Solution Number two: 1.Create stdafx.h and stdafx.cpp in your project 2 Right click on project -> properties -> C/C++ -> Precompiled Headers 3.select precompiled header to create(/Yc) 4.Rebuild the solution

Drop me a message if you encounter any issue.

I am not really sure about your question (the meaning of "empty table" etc, or how mappedBy and JoinColumn were not working).

I think you were trying to do a bi-directional relationships.

First, you need to decide which side "owns" the relationship. Hibernate is going to setup the relationship base on that side. For example, assume I make the Post side own the relationship (I am simplifying your example, just to keep things in point), the mapping will look like:

(Wish the syntax is correct. I am writing them just by memory. However the idea should be fine)

public class User{
    @OneToMany(fetch=FetchType.LAZY, cascade = CascadeType.ALL, mappedBy="user")
    private List<Post> posts;
}


public class Post {
    @ManyToOne(fetch=FetchType.LAZY)
    @JoinColumn(name="user_id")
    private User user;
}

By doing so, the table for Post will have a column user_id which store the relationship. Hibernate is getting the relationship by the user in Post (Instead of posts in User. You will notice the difference if you have Post's user but missing User's posts).

You have mentioned mappedBy and JoinColumn is not working. However, I believe this is in fact the correct way. Please tell if this approach is not working for you, and give us a bit more info on the problem. I believe the problem is due to something else.

Edit:

Just a bit extra information on the use of mappedBy as it is usually confusing at first. In mappedBy, we put the "property name" in the opposite side of the bidirectional relationship, not table column name.

Yes, you are correct. div p will match the following example, but div > p will not.

<div><table><tr><td><p> <!...

The first one is called descendant selector and the second one is called child selector.

<?php

  class Test {
     function MethodA(){
         echo __FUNCTION__ ;
     }
 }
 $test = new Test;
 echo $test->MethodA();
?>

Result: "MethodA";

Let me explain with an example and you would be able to see how it works.

Assuming you have the following table DIM_EQUIPMENT:

VIN         MAKE    MODEL   YEAR    COLOR
-----------------------------------------
1234ASDF    Ford    Taurus  2008    White
1234JKLM    Chevy   Truck   2005    Green
5678ASDF    Ford    Mustang 2008    Yellow

Run below SQL

SELECT VIN,
  MAKE,
  MODEL,
  YEAR,
  COLOR ,
  COUNT(*) OVER (PARTITION BY YEAR) AS COUNT2
FROM DIM_EQUIPMENT

The result would be as below

VIN         MAKE    MODEL   YEAR    COLOR     COUNT2
 ----------------------------------------------  
1234JKLM    Chevy   Truck   2005    Green     1
5678ASDF    Ford    Mustang 2008    Yellow    2
1234ASDF    Ford    Taurus  2008    White     2

See what happened.

You are able to count without Group By on YEAR and Match with ROW.

Another Interesting WAY to get same result if as below using WITH Clause, WITH works as in-line VIEW and can simplify the query especially complex ones, which is not the case here though since I am just trying to show usage

 WITH EQ AS
  ( SELECT YEAR AS YEAR2, COUNT(*) AS COUNT2 FROM DIM_EQUIPMENT GROUP BY YEAR
  )
SELECT VIN,
  MAKE,
  MODEL,
  YEAR,
  COLOR,
  COUNT2
FROM DIM_EQUIPMENT,
  EQ
WHERE EQ.YEAR2=DIM_EQUIPMENT.YEAR;

Just put this code in KeyTyped event:

    if ((jtextField.getText() + evt.getKeyChar()).length() > 20) {
        evt.consume();
    }

Where "20" is the maximum number of characters that you want.

If you are developing a .Net Core WebApi or WebSite you dont not need to install newtownsoft.json to perform json serialization/deserealization

Just make sure that your controller method returns a JsonResult and call return Json(<objectoToSerialize>); like this example

namespace WebApi.Controllers
{
    [Produces("application/json")]
    [Route("api/Accounts")]
    public class AccountsController : Controller
    {
        // GET: api/Transaction
        [HttpGet]
        public JsonResult Get()
        {
            List<Account> lstAccounts;

            lstAccounts = AccountsFacade.GetAll();

            return Json(lstAccounts);
        }
    }
}

If you are developing a .Net Framework WebApi or WebSite you need to use NuGet to download and install the newtonsoft json package

"Project" -> "Manage NuGet packages" -> "Search for "newtonsoft json". -> click "install".

namespace WebApi.Controllers
{
    [Produces("application/json")]
    [Route("api/Accounts")]
    public class AccountsController : Controller
    {
        // GET: api/Transaction
        [HttpGet]
        public JsonResult Get()
        {
            List<Account> lstAccounts;

            lstAccounts = AccountsFacade.GetAll();

            //This line is different !! 
            return new JsonConvert.SerializeObject(lstAccounts);
        }
    }
}

More details can be found here - https://docs.microsoft.com/en-us/aspnet/core/web-api/advanced/formatting?view=aspnetcore-2.1

You need to encode your parameter's values before concatenating them to URL.
Backslash \ is special character which have to be escaped as %5C

Escaping example:

String paramValue = "param\\with\\backslash";
String yourURLStr = "http://host.com?param=" + java.net.URLEncoder.encode(paramValue, "UTF-8");
java.net.URL url = new java.net.URL(yourURLStr);

The result is http://host.com?param=param%5Cwith%5Cbackslash which is properly formatted url string.

This is just an es6 port of the accepted answer that I'm using in my project. Note that this also includes tablets.

export const isMobile = () => {
  const vendor = navigator.userAgent || navigator.vendor || window.opera;

  return !!(
    /(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino|android|ipad|playbook|silk/i.test(
      vendor
    ) ||
    /1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw-(n|u)|c55\/|capi|ccwa|cdm-|cell|chtm|cldc|cmd-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc-s|devi|dica|dmob|do(c|p)o|ds(12|-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(-|_)|g1 u|g560|gene|gf-5|g-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd-(m|p|t)|hei-|hi(pt|ta)|hp( i|ip)|hs-c|ht(c(-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i-(20|go|ma)|i230|iac( |-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|-[a-w])|libw|lynx|m1-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|-([1-8]|c))|phil|pire|pl(ay|uc)|pn-2|po(ck|rt|se)|prox|psio|pt-g|qa-a|qc(07|12|21|32|60|-[2-7]|i-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h-|oo|p-)|sdk\/|se(c(-|0|1)|47|mc|nd|ri)|sgh-|shar|sie(-|m)|sk-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h-|v-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl-|tdg-|tel(i|m)|tim-|t-mo|to(pl|sh)|ts(70|m-|m3|m5)|tx-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas-|your|zeto|zte-/i.test(
      vendor.substr(0, 4)
    )
  );
};

Another quicker option to call things (like DialogBoxes and MessageBoxes and creating separate threads for not-thread safe methods) would be to use the Lamba Expression

  new Thread(() -> {
                      "code here"
            }).start();

From http://www.postgresql.org/docs/current/interactive/datatype.html

Note: Prior to PostgreSQL 7.3, serial implied UNIQUE. This is no longer automatic. If you wish a serial column to be in a unique constraint or a primary key, it must now be specified, same as with any other data type.

This is simple!

RewriteEngine On
RewriteCond %{HTTP_HOST} !^www\. [NC]
RewriteRule ^(.*)$ http://www.%{HTTP_HOST}%{REQUEST_URI} [R=301,L]

In the new Pipeline flow, following image may help ..

If you paste the string in server-side into the html don't need to do nothing:

For plain java in jsp:

var jsonObj=<%=jsonStringInJavaServlet%>;

For jsp width struts:

var jsonObj=<s:property value="jsonStringInJavaServlet" escape="false" escapeHtml="false"/>;

while (rs.next())
{
  if (f.exists() && !f.isDirectory())
    continue;

  //proceed
}

An alternative would be to set a variable, and check whether it is defined:

SET ARG=%1
IF DEFINED ARG (echo "It is defined: %1") ELSE (echo "%%1 is not defined")

Unfortunately, using %1 directly with DEFINED doesn't work.

You can use built-in sorted function.

print sorted(['Stem', 'constitute', 'Sedge', 'Eflux', 'Whim', 'Intrigue'])

I suggest you use null to represent a null value.

What is the exception you get?

BTW:

There is no year called 0 or 0000. (Though some dates allow this year)

And there is no 0 month of the year or 0 day of the month. (Which may be the cause of your problem)

Credit to: curiousmind.jlion.com/exceltotextfile (Link no longer exists)

Script:

Sub MakeXML(iCaptionRow As Integer, iDataStartRow As Integer, sOutputFileName As String)
    Dim Q As String
    Q = Chr$(34)

    Dim sXML As String

    sXML = "<?xml version=" & Q & "1.0" & Q & " encoding=" & Q & "UTF-8" & Q & "?>"
    sXML = sXML & "<rows>"


    ''--determine count of columns
    Dim iColCount As Integer
    iColCount = 1
    While Trim$(Cells(iCaptionRow, iColCount)) > ""
        iColCount = iColCount + 1
    Wend

    Dim iRow As Integer
    iRow = iDataStartRow

    While Cells(iRow, 1) > ""
        sXML = sXML & "<row id=" & Q & iRow & Q & ">"

        For icol = 1 To iColCount - 1
           sXML = sXML & "<" & Trim$(Cells(iCaptionRow, icol)) & ">"
           sXML = sXML & Trim$(Cells(iRow, icol))
           sXML = sXML & "</" & Trim$(Cells(iCaptionRow, icol)) & ">"
        Next

        sXML = sXML & "</row>"
        iRow = iRow + 1
    Wend
    sXML = sXML & "</rows>"

    Dim nDestFile As Integer, sText As String

    ''Close any open text files
    Close

    ''Get the number of the next free text file
    nDestFile = FreeFile

    ''Write the entire file to sText
    Open sOutputFileName For Output As #nDestFile
    Print #nDestFile, sXML
    Close
End Sub

Sub test()
    MakeXML 1, 2, "C:\Users\jlynds\output2.xml"
End Sub

after the part of code,I can write anything just like my views.py :)

#######################################
import os,sys
sys.path.append('/home/administrator/development/store')
os.environ['DJANGO_SETTINGS_MODULE']='store.settings'
from django.core.management impor setup_environ
from store import settings
setup_environ(settings)
#######################################

from http://www.cotellese.net/2007/09/27/running-external-scripts-against-django-models/

I have seen comments in INI files, so yes. Please refer to this Wikipedia article. I could not find an official specification, but that is the correct syntax for comments, as many game INI files had this as I remember.

Edit

The API returns the Value and the Comment (forgot to mention this in my reply), just construct and example INI file and call the API on this (with comments) and you can see how this is returned.

Two ways:

1. Implement ActionListener in your class, then use jBtnSelection.addActionListener(this); Later, you'll have to define a menthod, public void actionPerformed(ActionEvent e). However, doing this for multiple buttons can be confusing, because the actionPerformed method will have to check the source of each event (e.getSource()) to see which button it came from.

2. Use anonymous inner classes:

jBtnSelection.addActionListener(new ActionListener() { 
  public void actionPerformed(ActionEvent e) { 
    selectionButtonPressed();
  } 
} );

Later, you'll have to define selectionButtonPressed(). This works better when you have multiple buttons, because your calls to individual methods for handling the actions are right next to the definition of the button.

The second method also allows you to call the selection method directly. In this case, you could call selectionButtonPressed() if some other action happens, too - like, when a timer goes off or something (but in this case, your method would be named something different, maybe selectionChanged()).

You should get your data in a specific format by melting your data (see below for how melted data looks like) before you plot. Otherwise, what you have done seems to be okay.

require(reshape2)
df <- read.csv("TestData.csv", header=T)
# melting by "Label". `melt is from the reshape2 package. 
# do ?melt to see what other things it can do (you will surely need it)
df.m <- melt(df, id.var = "Label")
> df.m # pasting some rows of the melted data.frame

#     Label variable      value
# 1    Good       F1 0.64778924
# 2    Good       F1 0.54608791
# 3    Good       F1 0.46134200
# 4    Good       F1 0.79421221
# 5    Good       F1 0.56919951
# 6    Good       F1 0.73568570
# 7    Good       F1 0.65094207
# 8    Good       F1 0.45749702
# 9    Good       F1 0.80861929
# 10   Good       F1 0.67310067
# 11   Good       F1 0.68781739
# 12   Good       F1 0.47009455
# 13   Good       F1 0.95859182
# 14   Good       F1 1.00000000
# 15   Good       F1 0.46908343
# 16    Bad       F1 0.57875528
# 17    Bad       F1 0.28938046
# 18    Bad       F1 0.68511766

require(ggplot2)
ggplot(data = df.m, aes(x=variable, y=value)) + geom_boxplot(aes(fill=Label))

Edit: I realise that you might need to facet. Here's an implementation of that as well:

p <- ggplot(data = df.m, aes(x=variable, y=value)) + 
             geom_boxplot(aes(fill=Label))
p + facet_wrap( ~ variable, scales="free")

Edit 2: How to add x-labels, y-labels, title, change legend heading, add a jitter?

p <- ggplot(data = df.m, aes(x=variable, y=value)) 
p <- p + geom_boxplot(aes(fill=Label))
p <- p + geom_jitter()
p <- p + facet_wrap( ~ variable, scales="free")
p <- p + xlab("x-axis") + ylab("y-axis") + ggtitle("Title")
p <- p + guides(fill=guide_legend(title="Legend_Title"))
p 

Edit 3: How to align geom_point() points to the center of box-plot? It could be done using position_dodge. This should work.

require(ggplot2)
p <- ggplot(data = df.m, aes(x=variable, y=value)) 
p <- p + geom_boxplot(aes(fill = Label))
# if you want color for points replace group with colour=Label
p <- p + geom_point(aes(y=value, group=Label), position = position_dodge(width=0.75))
p <- p + facet_wrap( ~ variable, scales="free")
p <- p + xlab("x-axis") + ylab("y-axis") + ggtitle("Title")
p <- p + guides(fill=guide_legend(title="Legend_Title"))
p 

EDIT: Updated for jQuery 1.8

Since jQuery 1.8 browser specific transformations will be added automatically. jsFiddle Demo

var rotation = 0;

jQuery.fn.rotate = function(degrees) {
    $(this).css({'transform' : 'rotate('+ degrees +'deg)'});
    return $(this);
};

$('.rotate').click(function() {
    rotation += 5;
    $(this).rotate(rotation);
});

EDIT: Added code to make it a jQuery function.

For those of you who don't want to read any further, here you go. For more details and examples, read on. jsFiddle Demo.

var rotation = 0;

jQuery.fn.rotate = function(degrees) {
    $(this).css({'-webkit-transform' : 'rotate('+ degrees +'deg)',
                 '-moz-transform' : 'rotate('+ degrees +'deg)',
                 '-ms-transform' : 'rotate('+ degrees +'deg)',
                 'transform' : 'rotate('+ degrees +'deg)'});
    return $(this);
};

$('.rotate').click(function() {
    rotation += 5;
    $(this).rotate(rotation);
});

EDIT: One of the comments on this post mentioned jQuery Multirotation. This plugin for jQuery essentially performs the above function with support for IE8. It may be worth using if you want maximum compatibility or more options. But for minimal overhead, I suggest the above function. It will work IE9+, Chrome, Firefox, Opera, and many others.

Bobby... This is for the people who actually want to do it in the javascript. This may be required for rotating on a javascript callback.

Here is a jsFiddle.

If you would like to rotate at custom intervals, you can use jQuery to manually set the css instead of adding a class. Like this! I have included both jQuery options at the bottom of the answer.

HTML

<div class="rotate">
    <h1>Rotatey text</h1>
</div>

CSS

/* Totally for style */
.rotate {
    background: #F02311;
    color: #FFF;
    width: 200px;
    height: 200px;
    text-align: center;
    font: normal 1em Arial;
    position: relative;
    top: 50px;
    left: 50px;
}

/* The real code */
.rotated {
    -webkit-transform: rotate(45deg);  /* Chrome, Safari 3.1+ */
    -moz-transform: rotate(45deg);  /* Firefox 3.5-15 */
    -ms-transform: rotate(45deg);  /* IE 9 */
    -o-transform: rotate(45deg);  /* Opera 10.50-12.00 */
    transform: rotate(45deg);  /* Firefox 16+, IE 10+, Opera 12.10+ */
}

jQuery

Make sure these are wrapped in $(document).ready

$('.rotate').click(function() {
    $(this).toggleClass('rotated');
});

Custom intervals

var rotation = 0;
$('.rotate').click(function() {
    rotation += 5;
    $(this).css({'-webkit-transform' : 'rotate('+ rotation +'deg)',
                 '-moz-transform' : 'rotate('+ rotation +'deg)',
                 '-ms-transform' : 'rotate('+ rotation +'deg)',
                 'transform' : 'rotate('+ rotation +'deg)'});
});

If you are using JDK 7 you can use the following code..

import java.nio.file.Files;
import java.io.File;

File fi = new File("myfile.jpg");
byte[] fileContent = Files.readAllBytes(fi.toPath())

Simplistic. So very normal looking, its almost comforting:

var userName = "Sean";

console.log(name());

function name() {
  return userName;
}

However, what if I include a really handy javascript library to my page that translates advanced characters into their base level representations?

Wait... what?

I mean, if someone types in a character with some kind of accent on it, but I only want 'English' characters A-Z in my program? Well... the Spanish 'ñ' and French 'é' characters can be translated into base characters of 'n' and 'e'.

So someone nice person has written a comprehensive character converter out there that I can include in my site... I include it.

One problem: it has a function in it called 'name' same as my function.

This is what's called collision. We've got two functions declared in the same scope with the same name. We want to avoid this.

So we need to scope our code somehow.

The only way to scope code in javascript is to wrap it in a function:

function main() {
  // We are now in our own sound-proofed room and the 
  // character-converter libarary's name() function can exist at the 
  // same time as ours. 

  var userName = "Sean";

  console.log(name());

  function name() {
    return userName;
  }
}

That might solve our problem. Everything is now enclosed and can only be accessed from within our opening and closing braces.

We have a function in a function... which is weird to look at, but totally legal.

Only one problem. Our code doesn't work. Our userName variable is never echoed into the console!

We can solve this issue by adding a call to our function after our existing code block...

function main() {
  // We are now in our own sound-proofed room and the 
  // character-converter libarary's name() function can exist at the 
  // same time as ours. 

  var userName = "Sean";

  console.log(name());

  function name() {
    return userName;
  }
}

main();

Or before!

main();

function main() {
  // We are now in our own sound-proofed room and the 
  // character-converter libarary's name() function can exist at the 
  // same time as ours. 

  var userName = "Sean";

  console.log(name());

  function name() {
    return userName;
  }
}

A secondary concern: What are the chances that the name 'main' hasn't been used yet? ...so very, very slim.

We need MORE scoping. And some way to automatically execute our main() function.

Now we come to auto-execution functions (or self-executing, self-running, whatever).

((){})();

The syntax is awkward as sin. However, it works.

When you wrap a function definition in parentheses, and include a parameter list (another set or parentheses!) it acts as a function call.

So lets look at our code again, with some self-executing syntax:

(function main() {
  var userName = "Sean";

    console.log(name());

    function name() {
      return userName;
    }
  }
)();

So, in most tutorials you read, you will now be bombard with the term 'anonymous self-executing' or something similar.

After many years of professional development, I strongly urge you to name every function you write for debugging purposes.

When something goes wrong (and it will), you will be checking the backtrace in your browser. It is always easier to narrow your code issues when the entries in the stack trace have names!

Hugely long-winded and I hope it helps!

As stated by the earlier answer you can get both mysql server and client libs by running

brew install mysql.

There is also client only installation. To install only client libraries run

brew install mysql-connector-c

In order to run these commands, you need homebrew package manager in your mac. You can install it by running

/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

First CD to where node(nodejs) is installed using windows CMD, then follow the steps below

C:...\node> git config --system http.sslcainfo /bin/curl-ca-bundle.crt
C:...\node> git clone --recursive git://github.com/isaacs/npm.git
C:...\node> cd node=modules\npm
C:...\node=modules\npm> node cli.js install npm -gf

I had the a similar problem and want to share my solution here.

I have the following HTML:

<div data-my-directive>
  <div id='sub' ng-include='includedFile.htm'></div>
</div>

Problem: In the link-function of directive of the parent div I wanted to jquery'ing the child div#sub. But it just gave me an empty object because ng-include hadn't finished when link function of directive ran. So first I made a dirty workaround with $timeout, which worked but the delay-parameter depended on client speed (nobody likes that).

Works but dirty:

app.directive('myDirective', [function () {
    var directive = {};
    directive.link = function (scope, element, attrs) {
        $timeout(function() {
            //very dirty cause of client-depending varying delay time 
            $('#sub').css(/*whatever*/);
        }, 350);
    };
    return directive;
}]);

Here's the clean solution:

app.directive('myDirective', [function () {
    var directive = {};
    directive.link = function (scope, element, attrs) {
        scope.$on('$includeContentLoaded', function() {
            //just happens in the moment when ng-included finished
            $('#sub').css(/*whatever*/);
        };
    };
    return directive;
}]);

Maybe it helps somebody.

%c

is designed for a single character a char, so it print only one element.Passing the char array as a pointer you are passing the address of the first element of the array(that is a single char) and then will be printed :

s

printf("%c\n",*name++);

will print

i

and so on ...

Pointer is not needed for the %s because it can work directly with String of characters.

You don't need to have a reportViewer control anywhere - you can create the LocalReport on the fly:

var lr = new LocalReport
{
    ReportPath = Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location) ?? @"C:\", "Reports", "PathOfMyReport.rdlc"),
    EnableExternalImages = true
};

lr.DataSources.Add(new ReportDataSource("NameOfMyDataSet", model));

string mimeType, encoding, extension;

Warning[] warnings;
string[] streams;
var renderedBytes = lr.Render
    (
        "PDF",
        @"<DeviceInfo><OutputFormat>PDF</OutputFormat><HumanReadablePDF>False</HumanReadablePDF></DeviceInfo>",
        out mimeType,
        out encoding,
        out extension,
        out streams,
        out warnings
    );

var saveAs = string.Format("{0}.pdf", Path.Combine(tempPath, "myfilename"));

var idx = 0;
while (File.Exists(saveAs))
{
    idx++;
    saveAs = string.Format("{0}.{1}.pdf", Path.Combine(tempPath, "myfilename"), idx);
}

using (var stream = new FileStream(saveAs, FileMode.Create, FileAccess.Write))
{
    stream.Write(renderedBytes, 0, renderedBytes.Length);
    stream.Close();
}

lr.Dispose();

You can also add parameters: (lr.SetParameter()), handle subreports: (lr.SubreportProcessing+=YourHandler), or pretty much anything you can think of.

I'm sure the other answers are faster, and your question asked for whether or not a folder contained files or folders... but I'd think most of the time people would consider a directory empty if it contains no files. ie It's still "empty" to me if it contains empty subdirectories... this may not fit for your usage, but may for others!

  public bool DirectoryIsEmpty(string path)
  {
    int fileCount = Directory.GetFiles(path).Length;
    if (fileCount > 0)
    {
        return false;
    }

    string[] dirs = Directory.GetDirectories(path);
    foreach (string dir in dirs)
    {
      if (! DirectoryIsEmpty(dir))
      {
        return false;
      }
    }

    return true;
  }

When using instanceof, you need to know the class of B at compile time. When using isAssignableFrom() it can be dynamic and change during runtime.

I'll provide an answer here since the ones here didn't quite click for me.

Perl's bless function associates any reference to all functions inside a package.

Why would we need this?

Let's begin by expressing an example in JavaScript:

(() => {
    'use strict';

    class Animal {
        constructor(args) {
            this.name = args.name;
            this.sound = args.sound;
        }
    }

    /* [WRONG] (global scope corruption)
     * var animal = Animal({
     *     'name': 'Jeff',
     *     'sound': 'bark'
     * }); 
     * console.log(animal.name + ', ' + animal.sound); // seems good
     * console.log(window.name); // my window's name is Jeff?
     */

    // new is important!
    var animal = new Animal(
        'name': 'Jeff',   
        'sound': 'bark'
    );

    console.log(animal.name + ', ' + animal.sound); // still fine.
    console.log(window.name); // undefined
})();

Now lets strip away the class construct and make do without it:

(() => {
    'use strict';

    var Animal = function(args) {
        this.name = args.name;
        this.sound = args.sound;
        return this; // implicit context hashmap
    };

    // the "new" causes the Animal to be unbound from global context, and 
    // rebinds it to an empty hash map before being constructed. The state is
    // now bound to animal, not the global scope.
    var animal = new Animal({
        'name': 'Jeff',
        'sound': 'bark'
    });
    console.log(animal.sound);    
})();

The function takes a hash table of unordered properties(since it makes no sense to have to write properties in a specific order in dynamic languages in 2016) and returns a hash table with those properties, or if you forgot to put the new keyword, it will return the whole global context(eg window in browser or global in nodejs).

Perl has no "this" nor "new" nor "class", but it can still have a function that behaves similarly. We won't have a constructor nor a prototype, but we will be able to create new animals at will and modify their individual properties.

# self contained scope 
(sub {
    my $Animal = (sub {
        return {
            'name' => $_[0]{'name'},
            'sound' => $_[0]{'sound'}
        };
    });

    my $animal = $Animal->({
        'name' => 'Jeff',
        'sound' => 'bark'
    });

    print $animal->{sound};
})->();

Now, we have a problem: What if we want the animal to perform the sounds by themselves instead of us printing what their voice is. That is, we want a function performSound that prints the animal's own sound.

One way to do this is by teaching each individual Animal how to do it's sound. This means that each Cat has its own duplicate function to performSound.

# self contained scope 
(sub {
    my $Animal = (sub {
        $name = $_[0]{'name'};
        $sound = $_[0]{'sound'};

        return {
            'name' => $name,
            'sound' => $sound,
            'performSound' => sub {
                print $sound . "\n";
            }
        };
    });

    my $animal = $Animal->({
        'name' => 'Jeff',
        'sound' => 'bark'
    });

    $animal->{'performSound'}();
})->();

This is bad because performSound is put as a completely new function object each time an animal is constructed. 10000 animals means 10000 performSounds. We want to have a single function performSound that is used by all animals that looks up their own sound and prints it.

(() => {
    'use strict';

    /* a function that creates an Animal constructor which can be used to create animals */
    var Animal = (() => {
        /* function is important, as fat arrow does not have "this" and will not be bound to Animal. */
        var InnerAnimal = function(args) {
            this.name = args.name;
            this.sound = args.sound;
        };
        /* defined once and all animals use the same single function call */
        InnerAnimal.prototype.performSound = function() {
            console.log(this.name);
        };

        return InnerAnimal;
    })();

    /* we're gonna create an animal with arguments in different order
       because we want to be edgy. */
    var animal = new Animal({
        'sound': 'bark',
        'name': 'Jeff'
    });
    animal.performSound(); // Jeff
})();

Here is where the parallel to Perl kinda stops.

JavaScript's new operator is not optional, without it, "this" inside object methods corrupts global scope:

(() => {
    // 'use strict'; // uncommenting this prevents corruption and raises an error instead.

    var Person = function() {
        this.name = "Sam";
    };
//    var wrong = Person(); // oops! we have overwritten window.name or global.main.
//    console.log(window.name); // my window's name is Sam?
    var correct = new Person; // person's name is actually stored in the person now.

})();

We want to have one function for each Animal that looks up that animal's own sound rather than hardcoding it at construction.

Blessing lets us use a package as the prototype of objects. This way, the object is aware of the "package" it is "referenced to", and in turn can have the functions in the package "reach into" the specific instances that were created from the constructor of that "package object":

package Animal;
sub new {
    my $packageRef = $_[0];
    my $name = $_[1]->{'name'};
    my $sound = $_[1]->{'sound'};

    my $this = {
        'name' => $name,
        'sound' => $sound
    };   

    bless($this, $packageRef);
    return $this;
}

# all animals use the same performSound to look up their sound.
sub performSound {
    my $this = shift;
    my $sound = $this->{'sound'};
    print $sound . "\n";
}

package main;
my $animal = Animal->new({
    'name' => 'Cat',
    'sound' => 'meow'
});
$animal->performSound();

Summary/TL;DR:

Perl has no "this", "class", nor "new". blessing an object to a package gives that object a reference to the package, and when it calls functions in the package, their arguments will be offset by 1 slot, and the first argument($_[0] or shift) will be equivalent to javascript's "this". In turn, you can somewhat simulate JavaScript's prototype model.

Unfortunately it makes it impossible(to my understanding) to create "new classes" at runtime, as you need each "class" to have its own package, whereas in javascript, you don't need packages at all, as "new" keyword makes up an anonymous hashmap for you to use as a package at runtime to which you can add new functions and remove functions on the fly.

There are some Perl libraries creating their own ways of bridging this limitation in expressiveness, such as Moose.

Why the confusion?:

Because of packages. Our intuition tells us to bind the object to a hashmap containing its' prototype. This lets us create "packages" at runtime like JavaScript can. Perl does not have such flexibility(at least not built in, you have to invent it or get it from other modules), and in turn your runtime expressiveness is hindered. Calling it "bless" doesn't do it much favors neither.

What we want to do:

Something like this, but have binding to the prototype map recursive, and be implicitly bound to the prototype rather than having to explicitly do it.

Here is a naive attempt at it: the issue is that "call" does not know "what called it", so it may as well be a universal perl function "objectInvokeMethod(object, method)" which checks whether the object has the method, or its prototype has it, or its prototype has it, until it reaches the end and finds it or not (prototypical inheritence). Perl has nice eval magic to do it but I'll leave that for something I can try doing later.

Anyway here is the idea:

(sub {

    my $Animal = (sub {
        my $AnimalPrototype = {
            'performSound' => sub {
                return $_[0]->{'sound'};
            }
        };

        my $call = sub {
            my $this = $_[0];
            my $proc = $_[1];

            if (exists $this->{$proc}) {
                return $this->{$proc}->();
            } else {
                return $this->{prototype}->{$proc}->($this, $proc);
            }
        };

        return sub {
            my $name = $_[0]->{name};
            my $sound = $_[0]->{sound};

            my $this = { 
                'this' => $this,
                'name' => $name,
                'sound' => $sound,
                'prototype' => $AnimalPrototype,
                'call' => $call                
            };
        };
    })->();

    my $animal = $Animal->({
        'name' => 'Jeff',
        'sound'=> 'bark'
    });
    print($animal->{call}($animal, 'performSound'));
})->();

Anyway hopefully somebody will find this post useful.

Hiding the overflow and fixing the position does the trick however with my fluid design it would fix it past the browsers width, so a width:100% fixed that.

body.modal-open{overflow:hidden;position:fixed;width:100%}

Your time string is similar to the time format in rfc 2822 (date format in email, http headers). You could parse it using only stdlib:

>>> from email.utils import parsedate_tz
>>> parsedate_tz('Tue Jun 22 07:46:22 EST 2010')
(2010, 6, 22, 7, 46, 22, 0, 1, -1, -18000)

See solutions that yield timezone-aware datetime objects for various Python versions: parsing date with timezone from an email.

In this format, EST is semantically equivalent to -0500. Though, in general, a timezone abbreviation is not enough, to identify a timezone uniquely.

A variable cannot be both null and undefined at the same time. However, the direct answer to your question is:

if (variable != null)

One =, not two.

There are two special clauses in the "abstract equality comparison algorithm" in the JavaScript spec devoted to the case of one operand being null and the other being undefined, and the result is true for == and false for !=. Thus if the value of the variable is undefined, it's not != null, and if it's not null, it's obviously not != null.

Now, the case of an identifier not being defined at all, either as a var or let, as a function parameter, or as a property of the global context is different. A reference to such an identifier is treated as an error at runtime. You could attempt a reference and catch the error:

var isDefined = false;
try {
  (variable);
  isDefined = true;
}
catch (x) {}

I would personally consider that a questionable practice however. For global symbols that may or may be there based on the presence or absence of some other library, or some similar situation, you can test for a window property (in browser JavaScript):

var isJqueryAvailable = window.jQuery != null;

or

var isJqueryAvailable = "jQuery" in window;

You have to call close() on the GZIPOutputStream before you attempt to read it. The final bytes of the file will only be written when the file is actually closed. (This is irrespective of any explicit buffering in the output stack. The stream only knows to compress and write the last bytes when you tell it to close. A flush() probably won't help ... though calling finish() instead of close() should work. Look at the javadocs.)

Here's the correct code (in Java);

package test;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;

public class GZipTest {

    public static void main(String[] args) throws
                FileNotFoundException, IOException {
        String name = "/tmp/test";
        GZIPOutputStream gz = new GZIPOutputStream(new FileOutputStream(name));
        gz.write(10);
        gz.close();       // Remove this to reproduce the reported bug
        System.out.println(new GZIPInputStream(new FileInputStream(name)).read());
    }
}

(I've not implemented resource management or exception handling / reporting properly as they are not relevant to the purpose of this code. Don't treat this as an example of "good code".)

Consider a task that inputs data from the serial port. When new data arrives the serial port triggers an event. When the software services that event, it reads and processes the new data. The serial port has a hardware to store incoming data (2 on the MSP432, 16 on the TM4C123) such that if the buffer is full and more data arrives, the new data is lost. Is this system hard, firm, or soft real time?

It is hard real time because if the response is late, data may be lost.

Consider a hearing aid that inputs sounds from a microphone, manipulates the sound data, and then outputs the data to a speaker. The system usually has small and bounded jitter, but occasionally other tasks in the hearing aid cause some data to be late, causing a noise pulse on the speaker. Is this system hard, firm or soft real time?

It is firm real time because it causes an error that can be perceived but the effect is harmless and does not significantly alter the quality of the experience.

Consider a task that outputs data to a printer. When the printer is idle the printer triggers an event. When the software services that event, it sends more data to the printer. Is this system hard, firm or soft real time?

It is soft real time because the faster it responses the better, but the value of the system (bandwidth is amount of data printed per second) diminishes with latency.

UTAustinX: UT.RTBN.12.01x Realtime Bluetooth Networks

Adrian's answer threw "fatal: This operation must be run in a work tree." The following is what worked for us.

git worktree add <new-dir> --no-checkout --detach
cd <new-dir>
git checkout <some-ref> -- <existing-dir>

Notes:

• --no-checkout Do not checkout anything into the new worktree.
• --detach Do not create a new branch for the new worktree.
• <some-ref> works with any ref, for instance, it works with HEAD~1.
• Cleanup with git worktree prune.

Based on comments below, it no longer works in modern browsers
This question demonstrates an approach that might be helpful to you: Silent print an embedded PDF

It uses the <embed> tag to embed the PDF in the document:

<embed
    type="application/pdf"
    src="path_to_pdf_document.pdf"
    id="pdfDocument"
    width="100%"
    height="100%" />

Then you call the .print() method on the element in Javascript when the PDF is loaded:

function printDocument(documentId) {
    var doc = document.getElementById(documentId);

    //Wait until PDF is ready to print    
    if (typeof doc.print === 'undefined') {    
        setTimeout(function(){printDocument(documentId);}, 1000);
    } else {
        doc.print();
    }
}

You could place the embed in a hidden iframe and print it from there, giving you a seamless experience.

You can create your own lock with GET_LOCK(lockName,timeOut)

If you do a GET_LOCK(lockName, 0) with a 0 time out before you lock the tables and then follow that with a RELEASE_LOCK(lockName) then all other threads performing a GET_LOCK() will get a value of 0 which will tell them that the lock is being held by another thread.

However this won't work if you don't have all threads calling GET_LOCK() before locking tables. The documentation for locking tables is here

Hope that helps!

1. That is correct. When you do that you are casting it it into an employee object, so that means you cannot access anything manager specific.

2. Downcasting is where you take a base class and then try and turn it into a more specific class. This can be accomplished with using is and an explicit cast like this:

   if (employee is Manager)
   {
       Manager m = (Manager)employee;
       //do something with it
   }
   

or with the as operator like this:

Manager m = (employee as Manager);
if (m != null)
{
    //do something with it
}

If anything is unclear I'll be happy to correct it!

floating divs to center "works" with the combination of display:inline-block and text-align:center.

Try changing width of the outer div by resizing the window of this jsfiddle

<div class="outer">
    <div class="block">one</div>
    <div class="block">two</div>
    <div class="block">three</div>
    <div class="block">four</div>
    <div class="block">five</div>
</div>

and the css:

.outer {
    text-align:center;
    width: 50%;
    background-color:lightgray;
}

.block {
    width: 50px;
    height: 50px;
    border: 1px solid lime;
    display: inline-block;
    margin: .2rem;
    background-color: white;
}

CharSequence = interface
String = concrete implementation

• CharSequence is an interface.
• Several classes implement this interface.
  • String is one such class, a concrete implementation of CharSequence.

You said:

converting from one to another

There is no converting from String.

• Every String object is a CharSequence.
• Every CharSequence can produce a String. Call CharSequence::toString. If the CharSequence happens to be a String, then the method returns a reference to its own object.

In other words, every String is a CharSequence, but not every CharSequence is a String.

Programming to an interface

Programming in Android, most of the text values are expected in CharSequence.

Why is that? What is the benefit, and what are the main impacts of using CharSequence over String?

Generally, programming to an interface is better than programming to concrete classes. This yields flexibility, so we can switch between concrete implementations of a particular interface without breaking other code.

When developing an API to be used by various programmers in various situations, write your code to give and take the most general interfaces possible. This gives the calling programmer the freedom to use various implementations of that interface, whichever implementation is best for their particular context.

For example, look at the Java Collections Framework. If your API gives or takes an ordered collection of objects, declare your methods as using List rather than ArrayList, LinkedList, or any other 3rd-party implementation of List.

When writing a quick-and-dirty little method to be used only by your code in one specific place, as opposed to writing an API to be used in multiple places, you need not bother with using the more general interface rather than a specific concrete class. But even then, it does to hurt to use the most general interface you can.

What are the main differences, and what issues are expected, while using them,

• With a String you know you have a single piece of text, entirely in memory, and is immutable.
• With a CharSequence, you do not know what the particular features of the concrete implementation might be.

The CharSequence object might represent an enormous chunk of text, and therefore has memory implications. Or may be many chunks of text tracked separately that will need to be stitched together when you call toString, and therefore has performance issues. The implementation may even be retrieving text from a remote service, and therefore has latency implications.

and converting from one to another?

You generally won't be converting back and forth. A String is a CharSequence. If your method declares that it takes a CharSequence, the calling programmer may pass a String object, or may pass something else such as a StringBuffer or StringBuilder. Your method's code will simply use whatever is passed, calling any of the CharSequence methods.

The closest you would get to converting is if your code receives a CharSequence and you know you need a String. Perhaps your are interfacing with old code written to String class rather than written to the CharSequence interface. Or perhaps your code will work intensively with the text, such as looping repeatedly or otherwise analyzing. In that case, you want to take any possible performance hit only once, so you call toString up front. Then proceed with your work using what you know to be a single piece of text entirely in memory.

Twisted history

Note the comments made on the accepted Answer. The CharSequence interface was retrofitted onto existing class structures, so there are some important subtleties (equals() & hashCode()). Notice the various versions of Java (1, 2, 4 & 5) tagged on the classes/interfaces—quite a bit of churn over the years. Ideally CharSequence would have been in place from the beginning, but such is life.

My class diagram below may help you see the big picture of string types in Java 7/8. I'm not sure if all of these are present in Android, but the overall context may still prove useful to you.

this worked for me:

URL u = new URL ( "http://www.example.com/");
HttpURLConnection huc =  ( HttpURLConnection )  u.openConnection (); 
huc.setRequestMethod ("GET");  //OR  huc.setRequestMethod ("HEAD"); 
huc.connect () ; 
int code = huc.getResponseCode() ;
System.out.println(code);

thanks for the suggestions above.

This may also happen when you have a submodule pointing to a repository that was rebased and the given commit is "gone". While the commit may still be in the remote repository, it is not in a branch. If you can't create a new branch (e.g. not your repository), you're stuck with having to update the super project to point to a new commit. Alternatively you can push one of your copies of the submodules elsewhere and then update the super-project to point to that repository instead.

For those looking a more modern approach, you can use the fetch API. The following example shows how to download a spreadsheet file. It is easily done with the following code.

fetch(url, {
    body: JSON.stringify(data),
    method: 'POST',
    headers: {
        'Content-Type': 'application/json; charset=utf-8'
    },
})
.then(response => response.blob())
.then(response => {
    const blob = new Blob([response], {type: 'application/application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'});
    const downloadUrl = URL.createObjectURL(blob);
    const a = document.createElement("a");
    a.href = downloadUrl;
    a.download = "file.xlsx";
    document.body.appendChild(a);
    a.click();
})

I believe this approach to be much easier to understand than other XMLHttpRequest solutions. Also, it has a similar syntax to the jQuery approach, without the need to add any additional libraries.

Of course, I would advise checking to which browser you are developing, since this new approach won't work on IE. You can find the full browser compatibility list on the following [link][1].

Important: In this example I am sending a JSON request to a server listening on the given url. This url must be set, on my example I am assuming you know this part. Also, consider the headers needed for your request to work. Since I am sending a JSON, I must add the Content-Type header and set it to application/json; charset=utf-8, as to let the server know the type of request it will receive.

PHP HAS multithreading, its just not enabled by default, there is an extension called pthreads which does exactly that. You'll need php compiled with ZTS though. (Thread Safe) Links:

Examples

Another tutorial

pthreads PECL Extension

Recently when working on a web app for a client, I noticed that any click events added to a non-anchor element didn't work on the iPad or iPhone. All desktop and other mobile devices worked fine - but as the Apple products are the most popular mobile devices, it was important to get it fixed.

Turns out that any non-anchor element assigned a click handler in jQuery must either have an onClick attribute (can be empty like below):

onClick=""

OR

The element css needs to have the following declaration:

cursor:pointer

Strange, but that's what it took to get things working again!
source:http://www.mitch-solutions.com/blog/17-ipad-jquery-live-click-events-not-working

@Daniel B, thanks for the suggestion to write my own version of this function. It has the same behavior as Directory.GetFiles, but supports regex filtering.

string[] FindFiles(FolderBrowserDialog dialog, string pattern)
    {
        Regex regex = new Regex(pattern);

        List<string> files = new List<string>();
        var files=Directory.GetFiles(dialog.SelectedPath);
        for(int i = 0; i < files.Count(); i++)
        {
            bool found = regex.IsMatch(files[i]);
            if(found)
            {
                files.Add(files[i]);
            }
        }

        return files.ToArray();
    }

I found it useful, so I thought I'd share.

If you want a lighter footprint, but a longer script, get the elements innerHTML and only create and clone the empty parent-

function getHTML(who,lines){
    if(!who || !who.tagName) return '';

    var txt, ax, str, el= document.createElement('div');
    el.appendChild(who.cloneNode(false));
    txt= el.innerHTML;
    ax= txt.indexOf('>')+1;
    str= txt.substring(0, ax)+who.innerHTML+ txt.substring(ax);

    el= null;
    return lines? str.replace(/> *</g,'>\n<'): str;
    //easier to read if elements are separated
}

Since it appears you are using jQuery, here is a jQuery solution.

$(function() {
    $('#Eframe').on("mousewheel", function() {
        alert($(document).scrollTop());
    });
});

Not much to explain here. If you want, here is the jQuery documentation.

To clarify one point in @EdChum's answer, per the documentation, you can include the object columns by using df.describe(include='all'). It won't provide many statistics, but will provide a few pieces of info, including count, number of unique values, top value. This may be a new feature, I don't know as I am a relatively new user.

Use @media queries. They serve this exact purpose. Here's an example how they work:

@media (max-width: 800px) {
  /* CSS that should be displayed if width is equal to or less than 800px goes here */
}

This would work only on devices whose width is equal to or less than 800px.

Read up more about media queries on the Mozilla Developer Network.

I know this is old, but maybe this will help someone else.

Do not log "new" values. Your existing table, GUESTS, has the new values. You'll have double entry of data, plus your DB size will grow way too fast that way.

I cleaned this up and minimized it for this example, but here is the tables you'd need for logging off changes:

CREATE TABLE GUESTS (
      GuestID INT IDENTITY(1,1) PRIMARY KEY, 
      GuestName VARCHAR(50), 
      ModifiedBy INT, 
      ModifiedOn DATETIME
)

CREATE TABLE GUESTS_LOG (
      GuestLogID INT IDENTITY(1,1) PRIMARY KEY, 
      GuestID INT, 
      GuestName VARCHAR(50), 
      ModifiedBy INT, 
      ModifiedOn DATETIME
)

When a value changes in the GUESTS table (ex: Guest name), simply log off that entire row of data, as-is, to your Log/Audit table using the Trigger. Your GUESTS table has current data, the Log/Audit table has the old data.

Then use a select statement to get data from both tables:

SELECT 0 AS 'GuestLogID', GuestID, GuestName, ModifiedBy, ModifiedOn FROM [GUESTS] WHERE GuestID = 1
UNION
SELECT GuestLogID, GuestID, GuestName, ModifiedBy, ModifiedOn FROM [GUESTS_LOG] WHERE GuestID = 1
ORDER BY ModifiedOn ASC

Your data will come out with what the table looked like, from Oldest to Newest, with the first row being what was created & the last row being the current data. You can see exactly what changed, who changed it, and when they changed it.

Optionally, I used to have a function that looped through the RecordSet (in Classic ASP), and only displayed what values had changed on the web page. It made for a GREAT audit trail so that users could see what had changed over time.

Add one unique session or cookie in button click event then redirect page on same URL using Request.RawUrl Now add code in Page_Load event to grab that session or coockie. If session/cookie matches then you can knows that page redirected using refresh button. So decrease hit counter by 1 to keep it on same number do hitcountr -= hitconter

Else increase the hit counter.

For completeness with os.scandir (2x faster over pathlib):

import os
sorted(os.scandir('/tmp/test'), key=lambda d: d.stat().st_mtime)

We came across many situation where we need to check error and error logs to figure out issue we are facing we can check by possibly following method:

1.) On blank screen Some time we got nothing but blank screen instead of our site or message written The website encountered an unexpected error. Please try again later , so we can Print Errors to the Screen by adding

error_reporting(E_ALL);

ini_set('display_errors', TRUE); 

ini_set('display_startup_errors', TRUE); 

in index.php at top.;

2.) We should enable optional core module for Database Logging at /admin/build/modules, and then we can check logs your_domain_name/admin/reports/dblog

3.) We can use drush command also to check logs drush watchdog-show it will show recent ten message

or if we want to continue showing logs with more information we can user
drush watchdog-show --tail --full.

4.) Also we can enable core Syslog module this module logs events of operating system of any web server.

I have the same question but cannot ask it because it would be a duplicate.

The accepted answer, using exit, does not work when the script is a bit more complicated. If you use a background process to check for the condition, exit only exits that process, as it runs in a sub-shell. To kill the script, you have to explicitly kill it (at least that is the only way I know).

Here is a little script on how to do it:

#!/bin/bash

boom() {
    while true; do sleep 1.2; echo boom; done
}

f() {
    echo Hello
    N=0
    while
        ((N++ <10))
    do
        sleep 1
        echo $N
        #        ((N > 5)) && exit 4 # does not work
        ((N > 5)) && { kill -9 $$; exit 5; } # works 
    done
}

boom &
f &

while true; do sleep 0.5; echo beep; done

This is a better answer but still incomplete a I really don't know how to get rid of the boom part.

The string you're trying to parse as a JSON is not encoded in UTF-8. Most likely it is encoded in ISO-8859-1. Try the following:

json.loads(unicode(opener.open(...), "ISO-8859-1"))

That will handle any umlauts that might get in the JSON message.

You should read Joel Spolsky's The Absolute Minimum Every Software Developer Absolutely, Positively Must Know About Unicode and Character Sets (No Excuses!). I hope that it will clarify some issues you're having around Unicode.

You can use jQuery to do that for you.

 $(document).ready(function() {
   // put Ajax here.
 });

Check it here:

http://docs.jquery.com/Tutorials:Introducing_%24%28document%29.ready%28%29

The ErrorDocument directive, when supplied a local URL path, expects the path to be fully qualified from the DocumentRoot. In your case, this means that the actual path to the ErrorDocument is

ErrorDocument 404 /hellothere/error/404page.html

This problem is usually caused by writing to a connection that had already been closed by the peer. In this case it could indicate that the user cancelled the download for example.

No, you can just write the function as:

$(document).ready(function() {
    MyBlah("hello");
});

function MyBlah(blah) {
    alert(blah);
}

This calls the function MyBlah on content ready.

Also there is

aRange.EntireColumn.AutoFit();

See What is the difference between Range.Columns and Range.EntireColumn.

$query_ids = $this->getEntityManager()
      ->createQuery(
        "SELECT e_.id
        FROM MuzichCoreBundle:Element e_
        WHERE [...]
        GROUP BY e_.id")
     ->setMaxResults(5)
     ->setMaxResults($limit) 
    ;

HERE in the second query the result of the first query should be passed ..

$query_select = "SELECT e
      FROM MuzichCoreBundle:Element e 
      WHERE e.id IN (".$query_ids->getResult().")
      ORDER BY e.created DESC, e.name DESC"
    ;


$query = $this->getEntityManager()
      ->createQuery($query_select)
      ->setParameters($params)
      ->setMaxResults($limit);
    ;

$resultCollection = $query->getResult();

I'm not sure if I understand your question properly, but it shouldn't matter if this div is a child of some other div. You can simply get text from all divs with class bgHeaderH2 by using following code:

$(".bgHeaderH2").text();

private static Scanner in;

I fixed it by declaring in as a private static Scanner class variable. Not sure why that fixed it but that is what eclipse recommended I do.

chart.js supports this by defaul check the link. chartjs

you can set the label in the options attribute.

options object looks like this.

options = {
            scales: {
                yAxes: [
                    {
                        id: 'y-axis-1',
                        display: true,
                        position: 'left',
                        ticks: {
                            callback: function(value, index, values) {
                                return value + "%";
                            }
                        },
                        scaleLabel:{
                            display: true,
                            labelString: 'Average Personal Income',
                            fontColor: "#546372"
                        }
                    }   
                ]
            }
        };

The nabvar will collapse on small devices. The point of collapsing is defined by @grid-float-breakpoint in variables. By default this will by before 768px. For screens below the 768 pixels screen width, the navbar will look like:

It's possible to change the @grid-float-breakpoint in variables.less and recompile Bootstrap. When doing this you also will have to change @screen-xs-max in navbar.less. You will have to set this value to your new @grid-float-breakpoint -1. See also: https://github.com/twbs/bootstrap/pull/10465. This is needed to change navbar forms and dropdowns at the @grid-float-breakpoint to their mobile version too.

Since I needed this too, I was curious as to which alternative was the fastest.

I found that -- if all you want is a file count -- Baba's solution is a lot faster than the others. I was quite surprised.

Try it out for yourself:

<?php
define('MYDIR', '...');

foreach (array(1, 2, 3) as $i)
{
    $t = microtime(true);
    $count = run($i);
    echo "$i: $count (".(microtime(true) - $t)." s)\n";
}

function run ($n)
{
    $func = "countFiles$n";
    $x = 0;
    for ($f = 0; $f < 5000; $f++)
        $x = $func();
    return $x;
}

function countFiles1 ()
{
    $dir = opendir(MYDIR);
    $c = 0;
    while (($file = readdir($dir)) !== false)
        if (!in_array($file, array('.', '..')))
            $c++;
    closedir($dir);
    return $c;
}

function countFiles2 ()
{
    chdir(MYDIR);
    return count(glob("*"));
}

function countFiles3 () // Fastest method
{
    $f = new FilesystemIterator(MYDIR, FilesystemIterator::SKIP_DOTS);
    return iterator_count($f);
}
?>

Test run: (obviously, glob() doesn't count dot-files)

1: 99 (0.4815571308136 s)
2: 98 (0.96104407310486 s)
3: 99 (0.26513481140137 s)

I found a reference to this in condas issues. The following should now work.

name: sample_env
channels:
dependencies:
   - requests
   - bokeh>=0.10.0
   - pip:
     - git+https://github.com/pythonforfacebook/facebook-sdk.git

When you have many HTML inputs named C[] what you get in the POST array on the other end is an array of these values in $_POST['C']. So when you echo that, you are trying to print an array, so all it does is print Array and a notice.

To print properly an array, you either loop through it and echo each element, or you can use print_r.

Alternatively, if you don't know if it's an array or a string or whatever, you can use var_dump($var) which will tell you what type it is and what it's content is. Use that for debugging purposes only.

specify the main class location in pom under plugins

<build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <version>2.4</version>
                <configuration>
                    <archive>
                        <index>true</index>
                        <manifest>
                            <mainClass>com.example.hadoop.wordCount.WordCountApp</mainClass>
                        </manifest>
                    </archive>
                </configuration>
            </plugin>
        </plugins>
    </build>

In Visual Studio 2008 it is Ctrl + E + W.

if (android.os.Build.VERSION.SDK_INT >= 21) {
            storeViewHolder.storeNameTextView.setImageDrawable(context.getResources().getDrawable(array[position], context.getTheme()));
} else {
            storeViewHolder.storeNameTextView.setImageDrawable(context.getResources().getDrawable(array[position]));
}

def total_subsets_matching_sum(numbers, sum):
    array = [1] + [0] * (sum)
    for current_number in numbers:
        for num in xrange(sum - current_number, -1, -1):
            if array[num]:
                array[num + current_number] += array[num]
    return array[sum]

assert(total_subsets_matching_sum(range(1, 10), 9)       == 8)
assert(total_subsets_matching_sum({1, 3, 2, 5, 4, 9}, 9) == 4)

Explanation

This is one of the classic problems. The idea is to find the number of possible sums with the current number. And its true that, there is exactly one way to bring sum to 0. At the beginning, we have only one number. We start from our target (variable Maximum in the solution) and subtract that number. If it is possible to get a sum of that number (array element corresponding to that number is not zero) then add it to the array element corresponding to the current number. The program would be easier to understand this way

for current_number in numbers:
    for num in xrange(sum, current_number - 1, -1):
        if array[num - current_number]:
            array[num] += array[num - current_number]

When the number is 1, there is only one way in which you can come up with the sum of 1 (1-1 becomes 0 and the element corresponding to 0 is 1). So the array would be like this (remember element zero will have 1)

[1, 1, 0, 0, 0, 0, 0, 0, 0, 0]

Now, the second number is 2. We start subtracting 2 from 9 and its not valid (since array element of 7 is zero we skip that) we keep doing this till 3. When its 3, 3 - 2 is 1 and the array element corresponding to 1 is 1 and we add it to the array element of 3. and when its 2, 2 - 2 becomes 0 and we the value corresponding to 0 to array element of 2. After this iteration the array looks like this

[1, 1, 1, 1, 0, 0, 0, 0, 0, 0]

We keep doing this till we process all the numbers and the array after every iteration looks like this

[1, 1, 0, 0, 0, 0, 0, 0, 0, 0]
[1, 1, 1, 1, 0, 0, 0, 0, 0, 0]
[1, 1, 1, 2, 1, 1, 1, 0, 0, 0]
[1, 1, 1, 2, 2, 2, 2, 2, 1, 1]
[1, 1, 1, 2, 2, 3, 3, 3, 3, 3]
[1, 1, 1, 2, 2, 3, 4, 4, 4, 5]
[1, 1, 1, 2, 2, 3, 4, 5, 5, 6]
[1, 1, 1, 2, 2, 3, 4, 5, 6, 7]
[1, 1, 1, 2, 2, 3, 4, 5, 6, 8]

After the last iteration, we would have considered all the numbers and the number of ways to get the target would be the array element corresponding to the target value. In our case, Array[9] after the last iteration is 8.

You can use element.getBoundingClientRect() to retrieve element position relative to the viewport.

Then use document.documentElement.scrollTop to calculate the viewport offset.

The sum of the two will give the element position relative to the document:

element.getBoundingClientRect().top + document.documentElement.scrollTop

I also struggled with HOME button for awhile. I wanted to stop/skip a background service (which polls location) when user clicks HOME button.

here is what I implemented as "hack-like" solution;

keep the state of the app on SharedPreferences using boolean value

on each activity

onResume() -> set appactive=true

onPause() -> set appactive=false

and the background service checks the appstate in each loop, skips the action

IF appactive=false

it works well for me, at least not draining the battery anymore, hope this helps....

client.py

import socket

s = socket.socket()
s.connect(('127.0.0.1',12345))
while True:
    str = raw_input("S: ")
    s.send(str.encode());
    if(str == "Bye" or str == "bye"):
        break
    print "N:",s.recv(1024).decode()
s.close()

server.py

import socket

s = socket.socket()
port = 12345
s.bind(('', port))
s.listen(5)
c, addr = s.accept()
print "Socket Up and running with a connection from",addr
while True:
    rcvdData = c.recv(1024).decode()
    print "S:",rcvdData
    sendData = raw_input("N: ")
    c.send(sendData.encode())
    if(sendData == "Bye" or sendData == "bye"):
        break
c.close()

This should be the code for a small prototype for the chatting app you wanted. Run both of them in separate terminals but then just check for the ports.