Programs & Examples On #Taglist

You can now use a very simple API https://wa.me/ to perform this task where you can provide a valid whatsapp contact number like 15555555555 ( add country code, remove all '+', '-', brackets, spaces or leading zeros). You can also provide a urlencoded text as a predefined msg which user can send directly or change before sending.

Chat with me link : <a href="https://wa.me/15555555555">Contact me by whatsapp</a>

Chat with me link with predefined text : <a href="https://wa.me/15555555555?text=I%27d%20like%20to%20chat%20with%20you">Contact me on whatsapp</a>

Beauty of this wa.me url is you don't need to check user agent as it works on both mobile and desktop (opens web.whatsapp.com)

Source : https://faq.whatsapp.com/en/general/26000030

More details in my answer on a similar question https://stackoverflow.com/a/51854282/2485420

I had removed files from Compile Sources in Build Phases in Targets. I added main.m and it worked.

1) if list1 is a member of a class, create the list in the constructor so it's there and non-null though empty.

2) for (Object obj : list1 != null ? list1 : new ArrayList())

Found this while Googling. The second post makes a point about the different phases of JSF, which might be causing your error message to become lost. Also, try null in place of "newPassword" because you do not have any object with the id newPassword.

The issue HttpServletRequest.login does not set authentication state in session has been fixed in 3.0.1. Update glassfish to the latest version and you're done.

Updating is quite straightforward:

glassfishv3/bin/pkg set-authority -P dev.glassfish.org
glassfishv3/bin/pkg image-update

SELECT datetime(CURRENT_TIMESTAMP, 'localtime')

Most common AD default design is to have a container, cn=users just after the root of the domain. Thus a DN might be:

cn=admin,cn=users,DC=domain,DC=company,DC=com

Also, you might have sufficient rights in an LDAP bind to connect anonymously, and query for (cn=admin). If so, you should get the full DN back in that query.

It for example happens in this case here:

void initializeJSP(unknownType Experiment);

Try using std::string instead of just string (and include the <string> header). C++ Standard library classes are within the namespace std::.

There is a boolean contains(Object obj) method within the List interface.

You should be able to say:

if (list.contains("a")) {
    System.out.println("It's there");
}

According to the javadoc:

boolean contains(Object o)

Returns true if this list contains the specified element.
More formally, returns true if and only if this list contains at
least one element e such that (o==null ? e==null : o.equals(e)).

Use DECIMAL(8,6) for latitude (90 to -90 degrees) and DECIMAL(9,6) for longitude (180 to -180 degrees). 6 decimal places is fine for most applications. Both should be "signed" to allow for negative values.

I found this more useful for getting the absolute file location.

File file = new File("\\TestHello\\test.txt");
System.out.println(file.getAbsoluteFile());

You have your slash backwards, it should be "\n"

Well.. I'm not sure how portable os.chdir('..') would actually be. Under Unix those are real filenames. I would prefer the following:

import os
os.chdir(os.path.dirname(os.getcwd()))

That gets the current working directory, steps up one directory, and then changes to that directory.

I ran Visual Studio in Administrator mode and it worked for me :) Also, ensure that the app.config file which you are using for writing WCF configuration must be in the project where "ServiceHost" class is used, and not in actual WCF service project.

You've got the right idea, so here's how to go ahead: the onclick handlers run on the client side, in the browser, so you cannot call a PHP function directly. Instead, you need to add a JavaScript function that (as you mentioned) uses AJAX to call a PHP script and retrieve the data. Using jQuery, you can do something like this:

<script type="text/javascript">
function recp(id) {
  $('#myStyle').load('data.php?id=' + id);
}
</script>

<a href="#" onClick="recp('1')" > One   </a>
<a href="#" onClick="recp('2')" > Two   </a>
<a href="#" onClick="recp('3')" > Three </a>

<div id='myStyle'>
</div>

Then you put your PHP code into a separate file: (I've called it data.php in the above example)

<?php
  require ('myConnect.php');     
  $id = $_GET['id'];
  $results = mysql_query("SELECT para FROM content WHERE  para_ID='$id'");   
  if( mysql_num_rows($results) > 0 )
  {
   $row = mysql_fetch_array( $results );
   echo $row['para'];
  }
?>

See Samples Environment for Microsoft Chart Controls:

The samples environment for Microsoft Chart Controls for .NET Framework contains over 200 samples for both ASP.NET and Windows Forms. The samples cover every major feature in Chart Controls for .NET Framework. They enable you to see the Chart controls in action as well as use the code as templates for your own web and windows applications.

Seems to be more business oriented, but may be of some value to science students and scientists.

if you commit a wrong file in your last commits follow the instruction :

1. open source tree, change to this commit

2. change the lines and find your commit that the wrong file sent as commit

3. you can see the list of your changes in that commit
4. select it and then click on ... buttons right-hand side ... click reverse file
5. then you can see it on file status tab at the bottom left-hand side then click unstage:

6. open your visual studio code and revert back by committing your removed files
7. after them all, you can see results in your last commit in the source tree

• .NET Core will install and run on macOS - and just about any other desktop OS.
  IDEs are available for the mac, including:

  • Visual Studio for Mac
  • VS Code (free, but not as professional/focused as VS)
  • JetBrains Rider (paid)

• Mono is a good option that I've used in the past. But with Core 3.0 out now, I would go that route.

You can simply write:

char c = (char) 2;

or

char c = Convert.ToChar(2);

or more complex option for ASCII encoding only

char[] characters = System.Text.Encoding.ASCII.GetChars(new byte[]{2});
char c = characters[0];

Python Standard Library Pathlib module does what you looking for:

Path('pagehead.section.htm').read_text()

Don't forget to import Path:

jsk@dev1:~$ python3
Python 3.5.2 (default, Sep 10 2016, 08:21:44)
[GCC 5.4.0 20160609] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from pathlib import Path
>>> (Path("/etc") / "hostname").read_text()
'dev1.example\n'

On Python 27 install backported pathlib or pathlib2

I am using php 5.6 on window 10 with zend 1.12 version for me adding

require_once 'PHPUnit/Autoload.php';

before

abstract class Zend_Test_PHPUnit_ControllerTestCase extends PHPUnit_Framework_TestCase

worked. We need to add this above statement in ControllerTestCase.php file

You can also use START WITH to start a sequence from a particular point, although setval accomplishes the same thing, as in Euler's answer, eg,

SELECT MAX(a) + 1 FROM foo;
CREATE SEQUENCE foo_a_seq START WITH 12345; -- replace 12345 with max above
ALTER TABLE foo ALTER COLUMN a SET DEFAULT nextval('foo_a_seq');

If I understood the question correctly, you can use the slicing notation to keep everything except the last item:

record = record[:-1]

But a better way is to delete the item directly:

del record[-1]

Note 1: Note that using record = record[:-1] does not really remove the last element, but assign the sublist to record. This makes a difference if you run it inside a function and record is a parameter. With record = record[:-1] the original list (outside the function) is unchanged, with del record[-1] or record.pop() the list is changed. (as stated by @pltrdy in the comments)

Note 2: The code could use some Python idioms. I highly recommend reading this:
Code Like a Pythonista: Idiomatic Python (via wayback machine archive).

be careful using isinstance

isinstance(True, bool)
True
>>> isinstance(True, int)
True

but type

type(True) == bool
True
>>> type(True) == int
False

Have you tried the built in method to convert a stream to a string? It's part of the Apache Commons library (org.apache.commons.io.IOUtils).

Then your code would be this one line:

String total = IOUtils.toString(inputStream);

The documentation for it can be found here: http://commons.apache.org/io/api-1.4/org/apache/commons/io/IOUtils.html#toString%28java.io.InputStream%29

The Apache Commons IO library can be downloaded from here: http://commons.apache.org/io/download_io.cgi

The line starting ALREADYEXISTS uses ’ as the closing quote, it should be using '. The open quote on the next line (where the error is reported) is seen as the closing quote, and this mix up is causing the error.

I had this problem and it turned out the issue was that I had named my repository with CamelCase. Bitbucket automatically changes the URL of your repository to be all lower case and that gets sent to Jenkins in the webhook. Jenkins then searches for projects with a matching repository. If you, like me, have CamelCase in your repository URL in your project configuration you will be able to check out code, but the pattern matching on the webhook request will fail.

Just change your repo URL to be all lower case instead of CamelCase and the pattern match should find your project.

CSS

@media print {
  .pagebreak { 
     page-break-before: always; 
  }
}

HTML

<div class="pagebreak"></div>

Like you I also faced many problems implementing OCR in Android, but after much Googling I found the solution, and it surely is the best example of OCR.

Let me explain using step-by-step guidance.

First, download the source code from https://github.com/rmtheis/tess-two.

Import all three projects. After importing you will get an error. To solve the error you have to create a res folder in the tess-two project

First, just create res folder in tess-two by tess-two->RightClick->new Folder->Name it "res"

After doing this in all three project the error should be gone.

Now download the source code from https://github.com/rmtheis/android-ocr, here you will get best example.

Now you just need to import it into your workspace, but first you have to download android-ndk from this site:

http://developer.android.com/tools/sdk/ndk/index.html i have windows 7 - 32 bit PC so I have download http://dl.google.com/android/ndk/android-ndk-r9-windows-x86.zip this file

Now extract it suppose I have extract it into E:\Software\android-ndk-r9 so I will set this path on Environment Variable

Right Click on MyComputer->Property->Advance-System-Settings->Advance->Environment Variable-> find PATH on second below Box and set like path like below picture

done it

Now open cmd and go to on D:\Android Workspace\tess-two like below

If you have successfully set up environment variable of NDK then just type ndk-build just like above picture than enter you will not get any kind of error and all file will be compiled successfully:

Now download other source code also from https://github.com/rmtheis/tess-two , and extract and import it and give it name OCRTest, like in my PC which is in D:\Android Workspace\OCRTest

Import test-two in this and run OCRTest and run it; you will get the best example of OCR.

Answer for a slightly different problem:

You have a sequence of raw unicode that was saved into a str variable:

s_str: str = "\x00\x01\x00\xc0\x01\x00\x00\x00\x04"

You need to be able to get the byte literal of that unicode (for struct.unpack(), etc.)

s_bytes: bytes = b'\x00\x01\x00\xc0\x01\x00\x00\x00\x04'

Solution:

s_new: bytes = bytes(s, encoding="raw_unicode_escape")

Reference (scroll up for standard encodings):

Python Specific Encodings

You need run visudo and in the editor that it opens write:

igor    ALL=(ALL) ALL

That line grants all permissions to user igor.

If you want permit to run only some commands, you need to list them in the line:

igor    ALL=(ALL) /bin/kill, /bin/ps

if x is a vector with raw scores then scale(x) is a vector with standardized scores.

Or manually: (x-mean(x))/sd(x)

Added some more logic to solution provided by @Andrew Burgess. Here is the full solution:

Created a action filter to get errors for ajax request:

public class ValidateAjaxAttribute : ActionFilterAttribute
    {
        public override void OnActionExecuting(ActionExecutingContext filterContext)
        {
            if (!filterContext.HttpContext.Request.IsAjaxRequest())
                return;

            var modelState = filterContext.Controller.ViewData.ModelState;
            if (!modelState.IsValid)
            {
                var errorModel =
                        from x in modelState.Keys
                        where modelState[x].Errors.Count > 0
                        select new
                        {
                            key = x,
                            errors = modelState[x].Errors.
                                                          Select(y => y.ErrorMessage).
                                                          ToArray()
                        };
                filterContext.Result = new JsonResult()
                {
                    Data = errorModel
                };
                filterContext.HttpContext.Response.StatusCode =
                                                      (int)HttpStatusCode.BadRequest;
            }
        }
    }

Added the filter to my controller method as:

[HttpPost]
// this line is important
[ValidateAjax]
public ActionResult AddUpdateData(MyModel model)
{
    return Json(new { status = (result == 1 ? true : false), message = message }, JsonRequestBehavior.AllowGet);
}

Added a common script for jquery validation:

function onAjaxFormError(data) {
    var form = this;
    var errorResponse = data.responseJSON;
    $.each(errorResponse, function (index, value) {
        // Element highlight
        var element = $(form).find('#' + value.key);
        element = element[0];
        highLightError(element, 'input-validation-error');

        // Error message
        var validationMessageElement = $('span[data-valmsg-for="' + value.key + '"]');
        validationMessageElement.removeClass('field-validation-valid');
        validationMessageElement.addClass('field-validation-error');
        validationMessageElement.text(value.errors[0]);
    });
}

$.validator.setDefaults({
            ignore: [],
            highlight: highLightError,
            unhighlight: unhighlightError
        });

var highLightError = function(element, errorClass) {
    element = $(element);
    element.addClass(errorClass);
}

var unhighLightError = function(element, errorClass) {
    element = $(element);
    element.removeClass(errorClass);
}

Finally added the error javascript method to my Ajax Begin form:

@model My.Model.MyModel
@using (Ajax.BeginForm("AddUpdateData", "Home", new AjaxOptions { HttpMethod = "POST", OnFailure="onAjaxFormError" }))
{
}

You should use variables to store the names.

Numbers can't store strings.

Using a subshell substitution to parse the words undoes all the work you are doing to put spaces together.

Try instead:

cat CSV_file | sed -n 1'p' | tr ',' '\n' | while read word; do
    echo $word
done

That also increases parallelism. Using a subshell as in your question forces the entire subshell process to finish before you can start iterating over the answers. Piping to a subshell (as in my answer) lets them work in parallel. This matters only if you have many lines in the file, of course.

This is the way to iterate on this array:

foreach($hotels as $row) {
       foreach($row['rooms'] as $k) {
             echo $k['boards']['board_id'];
             echo $k['boards']['price'];
       }
}

You want to iterate on the hotels and the rooms (the ones with numeric indexes), because those seem to be the "collections" in this case. The other arrays only hold and group properties.

Assuming you have access to servlet as below

http://localhost:8080/myapp/download?id=7

I need to create a servlet and register it to web.xml

web.xml

<servlet>
     <servlet-name>DownloadServlet</servlet-name>
     <servlet-class>com.myapp.servlet.DownloadServlet</servlet-class>
</servlet>
<servlet-mapping>
     <servlet-name>DownloadServlet</servlet-name>
     <url-pattern>/download</url-pattern>
</servlet-mapping>

DownloadServlet.java

public class DownloadServlet extends HttpServlet {


    protected void doGet( HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

         String id = request.getParameter("id");

         String fileName = "";
         String fileType = "";
         // Find this file id in database to get file name, and file type

         // You must tell the browser the file type you are going to send
         // for example application/pdf, text/plain, text/html, image/jpg
         response.setContentType(fileType);

         // Make sure to show the download dialog
         response.setHeader("Content-disposition","attachment; filename=yourcustomfilename.pdf");

         // Assume file name is retrieved from database
         // For example D:\\file\\test.pdf

         File my_file = new File(fileName);

         // This should send the file to browser
         OutputStream out = response.getOutputStream();
         FileInputStream in = new FileInputStream(my_file);
         byte[] buffer = new byte[4096];
         int length;
         while ((length = in.read(buffer)) > 0){
            out.write(buffer, 0, length);
         }
         in.close();
         out.flush();
    }
}

For some time, the following should work:

Dapper.DefaultTypeMap.MatchNamesWithUnderscores = true;

Run a jar file and specify a class path like this:

java -cp <jar_name.jar:libs/*> com.test.App

jar_name.jar is the full name of the JAR you want to execute

libs/* is a path to your dependency JARs

com.test.App is the fully qualified name of the class from the JAR that has the main(String[]) method

The jar and dependent jar should have execute permissions.

The database registers its service name(s) with the listener when it starts up. If it is unable to do so then it tries again periodically - so if the listener starts after the database then there can be a delay before the service is recognised.

If the database isn't running, though, nothing will have registered the service, so you shouldn't expect the listener to know about it - lsnrctl status or lsnrctl services won't report a service that isn't registered yet.

You can start the database up without the listener; from the Oracle account and with your ORACLE_HOME, ORACLE_SID and PATH set you can do:

sqlplus /nolog

Then from the SQL*Plus prompt:

connect / as sysdba
startup

Or through the Grid infrastructure, from the grid account, use the srvctl start database command:

srvctl start database -d db_unique_name [-o start_options] [-n node_name]

You might want to look at whether the database is set to auto-start in your oratab file, and depending on what you're using whether it should have started automatically. If you're expecting it to be running and it isn't, or you try to start it and it won't come up, then that's a whole different scenario - you'd need to look at the error messages, alert log, possibly trace files etc. to see exactly why it won't start, and if you can't figure it out, maybe ask on Database Adminsitrators rather than on Stack Overflow.

If the database can't see +DATA then ASM may not be running; you can see how to start that here; or using srvctl start asm. As the documentation says, make sure you do that from the grid home, not the database home.

The hash is used by dictionaries and sets to quickly look up the object. A good starting point is Wikipedia's article on hash tables.

OK, but you don`t want to open the whole realtime database! You need something like this.

{
  /* Visit https://firebase.google.com/docs/database/security to learn more about security rules. */
  "rules": {
    ".read": "auth.uid !=null",
    ".write": "auth.uid !=null"
  }
}

or

{
  "rules": {
    "users": {
      "$uid": {
        ".write": "$uid === auth.uid"
      }
    }
  }
}

a simpler solution based on this answer:

public static String prettyFormat(String input, int indent) {
    try {
        Source xmlInput = new StreamSource(new StringReader(input));
        StringWriter stringWriter = new StringWriter();
        StreamResult xmlOutput = new StreamResult(stringWriter);
        TransformerFactory transformerFactory = TransformerFactory.newInstance();
        transformerFactory.setAttribute("indent-number", indent);
        Transformer transformer = transformerFactory.newTransformer(); 
        transformer.setOutputProperty(OutputKeys.INDENT, "yes");
        transformer.transform(xmlInput, xmlOutput);
        return xmlOutput.getWriter().toString();
    } catch (Exception e) {
        throw new RuntimeException(e); // simple exception handling, please review it
    }
}

public static String prettyFormat(String input) {
    return prettyFormat(input, 2);
}

testcase:

prettyFormat("<root><child>aaa</child><child/></root>");

returns:

<?xml version="1.0" encoding="UTF-8"?>
<root>
  <child>aaa</child>
  <child/>
</root>

 $howmanyuser_query=$conn->query('SELECT COUNT(uno)  FROM userentry;');
 $howmanyuser=$howmanyuser_query->fetch_array(MYSQLI_NUM); 
 echo $howmanyuser[0];

after the so many hours excellent :)

So with the code you have provided.

var bytes = Convert.FromBase64String(resizeImage.Content);
using (var imageFile = new FileStream(filePath, FileMode.Create))
{
    imageFile.Write(bytes ,0, bytes.Length);
    imageFile.Flush();
}

There is a nicer way of getting the string version of the path from the NSURL in Swift:

let path:String = url.path

You can write that in single line, but it's not something that someone would be able to read. Keep it like you already wrote it, it's already beautiful by itself.

If you have too much if/else constructs, you may think about using of different datastructures, like Dictionaries (to look up keys) or Collection (to run conditional LINQ queries on it)

I think you are putting one too many curly brackets. Try this

 @if($user->status=='waiting')
            <td><a href="#" class="viewPopLink btn btn-default1" role="button" data-id="{!! $user->travel_id !!}" data-toggle="modal" data-target="#myModal">Approve/Reject</a> </td>
            @else
            <td>{!! $user->status !!}</td>
        @endif

Arrays.asList(array);    

Example:

 List<String> stooges = Arrays.asList("Larry", "Moe", "Curly");

See Arrays.asList class documentation.

This variable can be set using value="${val1}" inside c:set if you have used jquery in your system.

you can do something like this:

DataTable dt = new DataTable();
for (int i = 0; i < GridView1.Columns.Count; i++)
    {
        dt.Columns.Add("column"+i.ToString());
    }
foreach (GridViewRow row in GridView1.Rows)
    {
        DataRow dr = dt.NewRow();
        for(int j = 0;j<GridView1.Columns.Count;j++)
            {
                dr["column" + j.ToString()] = row.Cells[j].Text;
            }

            dt.Rows.Add(dr);
    }

And that will show that it works.

GridView6.DataSource = dt;
GridView6.DataBind();

SELECT * FROM table
WHERE exec_datetime BETWEEN DATE_SUB(NOW(), INTERVAL 30 DAY) AND NOW();

http://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html#function_date-add

I have solved mine. Its not an NPM Error its related to proxy behavior.

If you are behind proxy,

MAC
 1.  Goto System Preference (gears icon on your mac)
 2.  click your network
 3.  click advanced
 4.  click proxy
 5.  check excludes simple hostnames
 6.  add this line below (Bypass Proxy Settings...) "localhost, localhost:8080"

refer to the npm echo: "Project is running at http://localhost:8080/"

Windows
 1.  Goto your browser Proxy Settings (google it)
 2.  check Bypass local address
 3.  add this line below "localhost, localhost:8080"

If you're using Google Chrome you can use the Chrome Dev Editor: https://github.com/dart-lang/chromedeveditor

On Button click start the native video player which will open in full screen:

Intent intent = new Intent(Intent.ACTION_VIEW );
intent.setDataAndType(Uri.parse(path), "video/*");
startActivity(intent);

I would rather use plt.clf() after every plt.show() to just clear the current figure instead of closing and reopening it, keeping the window size and giving you a better performance and much better memory usage.

Similarly, you could do plt.cla() to just clear the current axes.

To clear a specific axes, useful when you have multiple axes within one figure, you could do for example:

fig, axes = plt.subplots(nrows=2, ncols=2)

axes[0, 1].clear()

variable = id if variable.to_s.empty?

cv:Mat mat;
int rows = mat.rows;
int cols = mat.cols;

cv::Size s = mat.size();
rows = s.height;
cols = s.width;

Also note that stride >= cols; this means that actual size of the row can be greater than element size x cols. This is different from the issue of continuous Mat and is related to data alignment.

I'd suggest doing this with a combination of

1. CSS overflow-y: hidden;
2. scrolling="no" (for HTML4)
3. and seamless="seamless" (for HTML5)*

^{* The seamless attribute has been removed from the standard, and no browsers support it.}

.foo {_x000D_
  width: 200px;_x000D_
  height: 200px;_x000D_
  overflow-y: hidden;_x000D_
}

<iframe src="https://bing.com" _x000D_
        class="foo" _x000D_
        scrolling="no" >_x000D_
</iframe>

Use the CheckBoxList's GetItemChecked or GetItemCheckState method to find out whether an item is checked or not by its index.

var wrapper = $(document.body);

strings = [
    "19 51 2.108997",
    "20 47 2.1089"
];

$.each(strings, function(key, value) {
    var tmp = value.split(" ");
    $.each([
        tmp[0] + " " + tmp[1],
        tmp[2]
    ], function(key, value) {
        $("<span>" + value + "</span>").appendTo(wrapper);
    }); 
});

According to your requirement

just show me a basic example of using setTimeout to loop something

we have following example which can help you

var itr = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];_x000D_
var  interval = 1000; //one second_x000D_
itr.forEach((itr, index) => {_x000D_
_x000D_
  setTimeout(() => {_x000D_
    console.log(itr)_x000D_
  }, index * interval)_x000D_
})

It's likely that the download was corrupted if you are getting an error with the disk image. Go back to the downloads page at https://developers.google.com/appengine/downloads and look at the SHA1 checksum. Then, go to your Terminal app on your mac and run the following:

openssl sha1 [put the full path to the file here without brackets] 

For example:

openssl sha1 /Users/me/Desktop/myFile.dmg 

If you get a different value than the one on the Downloads page, you know your file is not properly downloaded and you should try again.

You can use a named vector.

With base R (maybe somewhat clunky):

x = data.frame(q = 1, w = 2, e = 3) 

rename_vec <- c(q = "A", e = "B")

names(x) <- ifelse(is.na(rename_vec[names(x)]), names(x), rename_vec[names(x)])

x
#>   A w B
#> 1 1 2 3

Or a dplyr option with !!!:

library(dplyr)

rename_vec <- c(A = "q", B = "e") # the names are just the other way round than in the base R way!

x %>% rename(!!!rename_vec)
#>   A w B
#> 1 1 2 3

The latter works because the 'big-bang' operator !!! is forcing evaluation of a list or a vector.

?`!!`

!!! forces-splice a list of objects. The elements of the list are spliced in place, meaning that they each become one single argument.

Most of the time you need to create a Service to perform something in the background, and your visible Activity simply controls this Service. (I'm sure the Music player works in the same way, so the example in the docs seems a bit misleading.) If that's the case, then your Activity can finish as usual and the Service will still be running.

A simpler approach is to capture the Back button press and call moveTaskToBack(true) as follows:

// 2.0 and above
@Override
public void onBackPressed() {
    moveTaskToBack(true);
}

// Before 2.0
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        moveTaskToBack(true);
        return true;
    }
    return super.onKeyDown(keyCode, event);
}

I think the preferred option should be for an Activity to finish normally and be able to recreate itself e.g. reading the current state from a Service if needed. But moveTaskToBack can be used as a quick alternative on occasion.

NOTE: as pointed out by Dave below Android 2.0 introduced a new onBackPressed method, and these recommendations on how to handle the Back button.

Use repr() and The difference between using repr and str

Using repr:

>>> try:
...     print(x)
... except Exception as e:
...     print(repr(e))
... 
NameError("name 'x' is not defined")

Using str:

>>> try:
...     print(x)
... except Exception as e:
...     print(str(e))
... 
name 'x' is not defined

With my mercurial background I was going to use:

git log --patch -1 $ID > $file

But I am considering using git format-patch -1 $ID now.

Not sure why it is in the module shutil, but it landed there in Python 3.3, Querying the size of the output terminal:

>>> import shutil
>>> shutil.get_terminal_size((80, 20))  # pass fallback
os.terminal_size(columns=87, lines=23)  # returns a named-tuple

A low-level implementation is in the os module. Also works in Windows.

A backport is now available for Python 3.2 and below:

• https://pypi.python.org/pypi/backports.shutil_get_terminal_size

The error happens because of you are trying to map a numeric vector to data in geom_errorbar: GVW[1:64,3]. ggplot only works with data.frame.

In general, you shouldn't subset inside ggplot calls. You are doing so because your standard errors are stored in four separate objects. Add them to your original data.frame and you will be able to plot everything in one call.

Here with a dplyr solution to summarise the data and compute the standard error beforehand.

library(dplyr)
d <- GVW %>% group_by(Genotype,variable) %>%
    summarise(mean = mean(value),se = sd(value) / sqrt(n()))

ggplot(d, aes(x = variable, y = mean, fill = Genotype)) + 
  geom_bar(position = position_dodge(), stat = "identity", 
      colour="black", size=.3) +
  geom_errorbar(aes(ymin = mean - se, ymax = mean + se), 
      size=.3, width=.2, position=position_dodge(.9)) +
  xlab("Time") +
  ylab("Weight [g]") +
  scale_fill_hue(name = "Genotype", breaks = c("KO", "WT"), 
      labels = c("Knock-out", "Wild type")) +
  ggtitle("Effect of genotype on weight-gain") +
  scale_y_continuous(breaks = 0:20*4) +
  theme_bw()

Here is very simple and short method

<?php
$time_start = microtime(true);
//the loop begin
//some code
//the loop end
$time_end = microtime(true);
$total_time = $time_end - $time_start;
echo $total_time; // or whatever u want to do with the time
?>

To reset your settings

• On the Tools menu, click Import and Export Settings.
• On the Welcome to the Import and Export Settings Wizard page, click Reset all settings and then click Next.
• If you want to delete your current settings combination, choose No, just reset settings, overwriting all current settings, and then click Next. Select the programming language(s) you want to reset the setting for.

Click Finish.

The Reset Complete page alerts you to any problems encountered during the reset.

What you could do is, a validation of the values, for example:

if the value of the input of fullanme is greater than some value length and if the value of the input of address is greater than some value length then redirect to a new page, otherwise shows an error for the input.

// We access to the inputs by their id's
let fullname = document.getElementById("fullname");
let address = document.getElementById("address");

// Error messages
let errorElement = document.getElementById("name_error");
let errorElementAddress = document.getElementById("address_error");

// Form
let contactForm = document.getElementById("form");

// Event listener
contactForm.addEventListener("submit", function (e) {
  let messageName = [];
  let messageAddress = [];
  
    if (fullname.value === "" || fullname.value === null) {
    messageName.push("* This field is required");
  }

  if (address.value === "" || address.value === null) {
    messageAddress.push("* This field is required");
  }

  // Statement to shows the errors
  if (messageName.length || messageAddress.length > 0) {
    e.preventDefault();
    errorElement.innerText = messageName;
    errorElementAddress.innerText = messageAddress;
  }
  
   // if the values length is filled and it's greater than 2 then redirect to this page
    if (
    (fullname.value.length > 2,
    address.value.length > 2)
  ) {
    e.preventDefault();
    window.location.assign("https://www.google.com");
  }

});

.error {
  color: #000;
}

.input-container {
  display: flex;
  flex-direction: column;
  margin: 1rem auto;
}

<html>
  <body>
    <form id="form" method="POST">
    <div class="input-container">
    <label>Full name:</label>
      <input type="text" id="fullname" name="fullname">
      <div class="error" id="name_error"></div>
      </div>
      
      <div class="input-container">
      <label>Address:</label>
      <input type="text" id="address" name="address">
      <div class="error" id="address_error"></div>
      </div>
      <button type="submit" id="submit_button" value="Submit request" >Submit</button>
    </form>
  </body>
</html>

Also removing the submodule and then running git submodule init and git submodule update will obviously do the trick, but may not always be appropriate or possible.

to upload a file which is submitted by user as a part of form using jquery please follow the below code :

var formData = new FormData();
formData.append("userfile", fileInputElement.files[0]);

Then send the form data object to server.

We can also append a File or Blob directly to the FormData object.

data.append("myfile", myBlob, "filename.txt");

You could use the ViewCommand design pattern. It describes a method for the MVVM design pattern to control a View from a ViewModel with commands.

I've implemented it based on King A.Majid's suggestion to use the MVVM Light Messenger class. The ViewCommandManager class handles invoking commands in connected views. It's basically the other direction of regular Commands, for these cases when a ViewModel needs to do some action in its View. It uses reflection like data-bound commands and WeakReferences to avoid memory leaks.

http://dev.unclassified.de/source/viewcommand (also published on CodeProject)

You miss the class declaration.

public class DerivativeQuiz{
   public static void derivativeQuiz(String args[]){ ... }
}

In 2019 poetry is the package and dependency manager you are looking for.

https://github.com/sdispater/poetry#why

It's modern, simple and reliable.

add this to your form:

<form  id="regform" action="insert.php" method="post">

add this to your function:

<script>
    function myFunction() {
        var pass1 = document.getElementById("pass1").value;
        var pass2 = document.getElementById("pass2").value;
        if (pass1 != pass2) {
            //alert("Passwords Do not match");
            document.getElementById("pass1").style.borderColor = "#E34234";
            document.getElementById("pass2").style.borderColor = "#E34234";
        }
        else {
            alert("Passwords Match!!!");
            document.getElementById("regForm").submit();
        }
    }
</script>

Look at the Temporarily Suppressing Warnings section of the Python docs:

If you are using code that you know will raise a warning, such as a deprecated function, but do not want to see the warning, then it is possible to suppress the warning using the catch_warnings context manager:

import warnings

def fxn():
    warnings.warn("deprecated", DeprecationWarning)

with warnings.catch_warnings():
    warnings.simplefilter("ignore")
    fxn()

I don't condone it, but you could just suppress all warnings with this:

import warnings
warnings.filterwarnings("ignore")

Ex:

>>> import warnings
>>> def f():
...     print('before')
...     warnings.warn('you are warned!')
...     print('after')
...
>>> f()
before
<stdin>:3: UserWarning: you are warned!
after
>>> warnings.filterwarnings("ignore")
>>> f()
before
after

In Angular earlier we had .angular-cli.json file which referred to favicon.ico. If you'll upgrade into one of the newer versions of Angular then you'll have angular.json instead. For these newer versions, you have to refer the favicon path in your index.html from now onwards.

I was facing this issue after pulling from remote master and adding to the appsettings on web.config. I solved it by enabling Windows Authentication:

Click on the project and press f4

Make sure Windows Auth is enabled:

I would recommend using Glazed Lists for this. It makes it very easy to map a data structure to a table model.

To react to the mouseclick on the JTable, use an ActionListener: ActionListener on JLabel or JTable cell

http://en.wikipedia.org/wiki/Binary_logarithm

def lg(x, tol=1e-13):
  res = 0.0

  # Integer part
  while x<1:
    res -= 1
    x *= 2
  while x>=2:
    res += 1
    x /= 2

  # Fractional part
  fp = 1.0
  while fp>=tol:
    fp /= 2
    x *= x
    if x >= 2:
        x /= 2
        res += fp

  return res

(Posted on behalf of the OP).

I believe I figured it out.

In my case, I added [class*="col-"] {padding: 0 7.5px;};.

Then added .row {margin: 0 -7.5px;}.

This works pretty well, except there is 1px margin on both sides. So I just make .row {margin: 0 -7.5px;} to .row {margin: 0 -8.5px;}, then it works perfectly.

I have no idea why there is a 1px margin. Maybe someone can explain it?

See the sample I created:

Demo
Code

I have tried the following config for eclipse.ini:

org.eclipse.epp.package.jee.product
--launcher.defaultAction
openFile
--launcher.XXMaxPermSize
1024M
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
1024m
--launcher.defaultAction
openFile
--launcher.appendVmargs
-vmargs
-Dosgi.requiredJavaVersion=1.6
-Xms128m
-Xmx2048m

Now eclipse performance is about 2 times faster then before.

You can also find a good help ref here: http://help.eclipse.org/indigo/index.jsp?topic=/org.eclipse.platform.doc.isv/reference/misc/runtime-options.html

HKEY_CURRENT_USER\Software\Microsoft\Command Processor

string: Autorun value: cd /d %~dp0

all bat files will run from the bat file location

The columns that needs to be converted to int can be mentioned in a dictionary also as below

df = df.astype({'col1': 'int', 'col2': 'int', 'col3': 'int'})

Make sure that all functions with non-void return type have a return statement.

While some compilers automatically provide a default return value, others will send a SIGILL or SIGTRAP at runtime when trying to leave a function without a return value.

@tux answer is great, just wanted to add that you can use go get to update a specific package:

go get -u full_package_name

for me the "workaround" solution was to remove the "_normal" from the end of the string

Check it out below:

• Low res image: https://pbs.twimg.com/profile_images/636894769742897152/frlgaWB8_normal.jpg

• Hi res image: https://pbs.twimg.com/profile_images/636894769742897152/frlgaWB8.jpg

Hi I have the most easiest code try this

    public class ImageFromUrlExample extends Activity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.main);  
            ImageView imgView =(ImageView)findViewById(R.id.ImageView01);
            Drawable drawable = LoadImageFromWebOperations("http://www.androidpeople.com/wp-content/uploads/2010/03/android.png");
            imgView.setImageDrawable(drawable);

    }

    private Drawable LoadImageFromWebOperations(String url)
    {
          try{
        InputStream is = (InputStream) new URL(url).getContent();
        Drawable d = Drawable.createFromStream(is, "src name");
        return d;
      }catch (Exception e) {
        System.out.println("Exc="+e);
        return null;
      }
    }
   }

main.xml

  <LinearLayout 
    android:id="@+id/LinearLayout01"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    xmlns:android="http://schemas.android.com/apk/res/android">
   <ImageView 
       android:id="@+id/ImageView01"
       android:layout_height="wrap_content" 
       android:layout_width="wrap_content"/>

try this

The error is:

Can not deserialize instance of java.lang.String out of START_ARRAY token at [Source: line: 1, column: 1095] (through reference chain: JsonGen["platforms"])

In JSON, platforms look like this:

"platforms": [
    {
        "platform": "iphone"
    },
    {
        "platform": "ipad"
    },
    {
        "platform": "android_phone"
    },
    {
        "platform": "android_tablet"
    }
]

So try change your pojo to something like this:

private List platforms;

public List getPlatforms(){
    return this.platforms;
}

public void setPlatforms(List platforms){
    this.platforms = platforms;
}

EDIT: you will need change mobile_networks too. Will look like this:

private List mobile_networks;

public List getMobile_networks() {
    return mobile_networks;
}

public void setMobile_networks(List mobile_networks) {
    this.mobile_networks = mobile_networks;
}

Just had a similar problem, except i needed a NodeList and not a Document, here's what I came up with. It's mostly the same solution as before, augmented to get the root element down as a NodeList and using erickson's suggestion of using an InputSource instead for character encoding issues.

private String DOC_ROOT="root";
String xml=getXmlString();
Document xmlDoc=loadXMLFrom(xml);
Element template=xmlDoc.getDocumentElement();
NodeList nodes=xmlDoc.getElementsByTagName(DOC_ROOT);

public static Document loadXMLFrom(String xml) throws Exception {
        InputSource is= new InputSource(new StringReader(xml));
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        factory.setNamespaceAware(true);
        DocumentBuilder builder = null;
        builder = factory.newDocumentBuilder();
        Document doc = builder.parse(is);
        return doc;
    }

You can use extension methods to do the same thing with less code.

public enum AccountType
{
    Retailer = 1,
    Customer = 2,
    Manager = 3,
    Employee = 4
}

static class AccountTypeMethods
{
    public static bool IsRetailer(this AccountType ac)
    {
        return ac == AccountType.Retailer;
    }
}

And to use:

if (userProfile.AccountType.isRetailer())
{
    //your code
}

I would recommend to rename the AccountType to Account. It's not a name convention.

To solve this problem in Excel, usually I would just type in the literal row number of the cell above, e.g., if I'm typing in Cell A7, I would use the formula =A6. Then if I copied that formula to other cells, they would also use the row of the previous cell.

Another option is to use Indirect(), which resolves the literal statement inside to be a formula. You could use something like:

=INDIRECT("A" & ROW() - 1)

The above formula will resolve to the value of the cell in column A and the row that is one less than that of the cell which contains the formula.

#define FONT_SIZE 14.0f
#define CELL_CONTENT_WIDTH 300.0f
#define CELL_CONTENT_MARGIN 10.0f

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath      *)indexPath;
{
   /// Here you can set also height according to your section and row
   if(indexPath.section==0 && indexPath.row==0)
   {
     text=@"pass here your dynamic data";

     CGSize constraint = CGSizeMake(CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), 20000.0f);

     CGSize size = [text sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE]      constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap];

     CGFloat height = MAX(size.height, 44.0f);

     return height + (CELL_CONTENT_MARGIN * 2);
   }
   else
   {
      return 44;
   }
}

- (UITableViewCell *)tableView:(UITableView *)tv cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    UITableViewCell *cell;
    UILabel *label = nil;

    cell = [tv dequeueReusableCellWithIdentifier:@"Cell"];
    if (cell == nil)
    {
       cell = [[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:@"Cell"];
    }
    ********Here you can set also height according to your section and row*********
    if(indexPath.section==0 && indexPath.row==0)
    {
        label = [[UILabel alloc] initWithFrame:CGRectZero];
        [label setLineBreakMode:UILineBreakModeWordWrap];
        [label setMinimumFontSize:FONT_SIZE];
        [label setNumberOfLines:0];
        label.backgroundColor=[UIColor clearColor];
        [label setFont:[UIFont systemFontOfSize:FONT_SIZE]];
        [label setTag:1];

        // NSString *text1 =[NSString stringWithFormat:@"%@",text];

        CGSize constraint = CGSizeMake(CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), 20000.0f);

        CGSize size = [text sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap];

        if (!label)
        label = (UILabel*)[cell viewWithTag:1];


        label.text=[NSString stringWithFormat:@"%@",text];
        [label setFrame:CGRectMake(CELL_CONTENT_MARGIN, CELL_CONTENT_MARGIN, CELL_CONTENT_WIDTH          - (CELL_CONTENT_MARGIN * 2), MAX(size.height, 44.0f))];
        [cell.contentView addSubview:label];
    }
return cell;
}

You can use JSoup.
It's a very strong HTML parser for java

For IntelliJ 2019, JDK 13 and gRPC:

Intellij IDEA -> Preferences -> Build, Execution, Deployment -> Build Tools -> Gradle -> Gradle JVM

and Select correct version.

you might also have to adding below line in your build.gradle dependencies

compileOnly group: 'javax.annotation', name: 'javax.annotation-api', version: '1.3.2'

This problem is beacouse your proyect is named serial.py and the library imported is name serial too , change the name and thats all.

As Davide Gualano has been told. This one

$("#myDiv").load("myScript.php?var=x&var2=y&var3=z")

use GET method for sending the request, and this one

$("#myDiv").load("myScript.php", {var:x, var2:y, var3:z})

use POST method for sending the request. But any limitation that is applied to each method (post/get) is applied to the alternative usages that has been mentioned in the question.

For example: url length limits the amount of sending data in GET method.

I searched for any solution to not use the "SendKeys(CHR(13))" methode I ever used to submit stuff in Browser. In this case I was happy to see your

InvokeMember("click")

but dont know why you know that you have to write "click" in there. Anyway Thanks

(MacOS) I got this issue after getting some malware that was forcing me to use WeKnow as a search engine. To fix this on MacOs I followed these steps

1. Go to System Preferences, then check if there's an icon named Profiles.

2. Remove AdminPrefs profile

3. Change default search engine settings, Restart Chrome

The above partially helped (I still had WeKnow as my home page). After that I followed these steps:

1. Type chrome://policy/ to see the policies. You cannot change them there

2. Copy paste this into your terminal

defaults write com.google.Chrome HomepageIsNewTabPage -bool false

defaults write com.google.Chrome NewTabPageLocation -string "https://www.google.com/"

defaults write com.google.Chrome HomepageLocation -string "https://www.google.com/"

defaults delete com.google.Chrome DefaultSearchProviderSearchURL

defaults delete com.google.Chrome DefaultSearchProviderNewTabURL

defaults delete com.google.Chrome DefaultSearchProviderName

I've also ran a scan of my system with Avast antivirus that has detected some malware

I am an Android novice and came across this question trying to get rid of a title bar.

I'm using an activity and displaying it as a dialog. I was poking around with themes and came across a useful bit of default theming.

Here's the code from my AndroidManifest.xml that I was using when the title bar was showing:

<activity
    android:name=".AlertDialog"
    android:theme="@android:style/Theme.Holo.Dialog"

    >

</activity>

Here's the change that got me my desired result:

<activity
    android:name=".AlertDialog"
    android:theme="@android:style/Theme.Holo.Dialog.NoActionBar"

    >

</activity>

As I said, I'm still new to Android, so this may have undesirable side-effects, but it appears to have given me the outcome I wanted, which was just to remove the title bar from the dialog.

Taking Screen Shot in IOS Simulator is SO Simple.

When you Open Simulator In the Right Lift You See File.

Click On File And You See Option Save Screen Shot.

This Option Saves Your Screen Shot In Default Path Which is Desktop.

I found a solution that is very easy, just set an empty string into the title attribute.

<input type="file" value="" title=" " />

If you're interested in creating a new dict without using intermediary storage: (this is faster, and in my opinion, cleaner than using dict.items())

dic2 = dict(dic0, **dic1)

Or if you're happy to use one of the existing dicts:

dic0.update(dic1)

SELECT empno,
       deptno,
       sal,
       RANK() OVER (PARTITION BY deptno ORDER BY sal) "rank"
FROM   emp;

     EMPNO     DEPTNO        SAL       rank
---------- ---------- ---------- ----------
      7934         10       1300          1
      7782         10       2450          2
      7839         10       5000          3
      7369         20        800          1
      7876         20       1100          2
      7566         20       2975          3
      7788         20       3000          4
      7902         20       3000          4
      7900         30        950          1
      7654         30       1250          2
      7521         30       1250          2
      7844         30       1500          4
      7499         30       1600          5
      7698         30       2850          6


SELECT empno,
       deptno,
       sal,
       DENSE_RANK() OVER (PARTITION BY deptno ORDER BY sal) "rank"
FROM   emp;

     EMPNO     DEPTNO        SAL       rank
---------- ---------- ---------- ----------
      7934         10       1300          1
      7782         10       2450          2
      7839         10       5000          3
      7369         20        800          1
      7876         20       1100          2
      7566         20       2975          3
      7788         20       3000          4
      7902         20       3000          4
      7900         30        950          1
      7654         30       1250          2
      7521         30       1250          2
      7844         30       1500          3
      7499         30       1600          4
      7698         30       2850          5

/* Important part */
.modal-dialog{
    overflow-y: initial !important
}
.modal-body{
    max-height: calc(100vh - 200px);
    overflow-y: auto;
}

This works for Bootstrap 3 without JS code and is responsive.

Source

I just read the Javadoc 1.5 reference here, and only the code with <and > must be enclosed inside {@code ...}. Here a simple example:

 /** 
 * Bla bla bla, for example:
 *
 * <pre>
 * void X() {
 *    List{@code <String>} a = ...;
 *    ...
 * }
 * </pre>
 *
 * @param ...
 * @return ...
 */
 .... your code then goes here ...

In my case, this has been resolved by going to control panel > java > security > then add url in the exception site list. Then apply. Test again the site and it should now allow you to run the local java.

What worked for me is the following (in view of the confusion in other answers):

<td style="text-align:center;">
    <input type="radio" name="ageneral" value="male">
</td>

The proposed solution (text-align) works but must be used in a style attribute.

It's a block of code which is executed when the class gets loaded by a classloader. It is meant to do initialization of static members of the class.

It is also possible to write non-static initializers, which look even stranger:

public class Foo {
    {
        // This code will be executed before every constructor
        // but after the call to super()
    }

    Foo() {

    }
}

To convert a string to json and the sting is like json. {"phonetype":"N95","cat":"WP"}

String Data=response.getEntity().getText().toString(); // reading the string value 
JSONObject json = (JSONObject) new JSONParser().parse(Data);
String x=(String) json.get("phonetype");
System.out.println("Check Data"+x);
String y=(String) json.get("cat");
System.out.println("Check Data"+y);

insert image zh

-while we insert image in database using insert query

$Image = $_FILES['Image']['name'];
    if(!$Image)
    {
      $Image="";
    }
    else
    {
      $file_path = 'upload/';
      $file_path = $file_path . basename( $_FILES['Image']['name']);    
      if(move_uploaded_file($_FILES['Image']['tmp_name'], $file_path)) 
     { 
}
}

This should work (where enquiryId is the id you need to match against):

vehicles.RemoveAll(vehicle => vehicle.EnquiryID == enquiryId);

What this does is passes each vehicle in the list into the lambda predicate, evaluating the predicate. If the predicate returns true (ie. vehicle.EnquiryID == enquiryId), then the current vehicle will be removed from the list.

If you know the types of the objects in your collections, then using the generic collections is a better approach. It avoids casting when retrieving objects from the collections, but can also avoid boxing if the items in the collection are value types (which can cause performance issues).

You must use 2 parameters :

• android:ellipsize="none" : the text is not cut on textview width

• android:scrollHorizontally="false" the text wraps on as many lines as necessary

It looks OK apart from the space in your ID attribute, which is not valid, and the fact that you're replacing the value of your input before checking the selection.

function textbox()_x000D_
{_x000D_
        var ctl = document.getElementById('Javascript_example');_x000D_
        var startPos = ctl.selectionStart;_x000D_
        var endPos = ctl.selectionEnd;_x000D_
        alert(startPos + ", " + endPos);_x000D_
}

<input id="Javascript_example" name="one" type="text" value="Javascript example" onclick="textbox()">

Also, if you're supporting IE <= 8 you need to be aware that those browsers do not support selectionStart and selectionEnd.

Schema information which is designed to be very close to that of the SQL-92 INFORMATION_SCHEMA may be obtained for the Jet/ACE engine (which is what I assume you mean by 'access') via the OLE DB providers.

See:

OpenSchema Method (ADO)

Supported Schema Rowsets

Also you can try this:

[style.background-image]="'url(' + photo + ')'"

jww is right — you're referencing the wrong intermediate certificate.

As you have been issued with a SHA256 certificate, you will need the SHA256 intermediate. You can grab it from here: http://secure2.alphassl.com/cacert/gsalphasha2g2r1.crt

You can create a static variable in JavaScript like this below. Here count is the static variable.

var Person = function(name) {
  this.name = name;
  // first time Person.count is undefined, so it is initialized with 1
  // next time the function is called, the value of count is incremented by 1
  Person.count = Person.count ? Person.count + 1 : 1;
}

var p1 = new Person('User p1');
console.log(p1.constructor.count);   // prints 1
var p2 = new Person('User p2');
console.log(p2.constructor.count);   // prints 2

You can assign values to the static variable using either the Person function, or any of the instances:

// set static variable using instance of Person
p1.constructor.count = 10;         // this change is seen in all the instances of Person
console.log(p2.constructor.count); // prints 10

// set static variable using Person
Person.count = 20;
console.log(p1.constructor.count); // prints 20

You could try Conditional Formatting available in the tool menu "Format -> Conditional Formatting".

Set the following registry value:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fusion!EnableLog] (DWORD) to 1

To disable, set to 0 or delete the value.

[edit ]:Save the following text to a file, e.g FusionEnableLog.reg, in Windows Registry Editor Format:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fusion]
"EnableLog"=dword:00000001

Then run the file from windows explorer and ignore the warning about possible damage.

The main question was to remove the CR/LF. Using the replace and char functions works for me:

Select replace(replace(Name,char(10),''),char(13),'')

For Postgres or Oracle SQL, use the CHR function instead:

       replace(replace(Name,CHR(10),''),CHR(13),'')

try this code working perfectly

int layout_parms;

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) 

    {  
         layout_parms = WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY;

    }

     else {

            layout_parms = WindowManager.LayoutParams.TYPE_PHONE;

    }

    yourparams = new WindowManager.LayoutParams(       
            WindowManager.LayoutParams.WRAP_CONTENT,
            WindowManager.LayoutParams.WRAP_CONTENT,
            layout_parms,
            WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
            PixelFormat.TRANSLUCENT);

Bootstrap 4 files do not come with the glyphicon support. But you can simply open up your bootstrap.css or bootstrap.min.css and paste this code which I came across here.

@font-face{font-family:'Glyphicons Halflings';src:url('https://netdna.bootstrapcdn.com/bootstrap/3.0.0/fonts/glyphicons-halflings-regular.eot');src:url('https://netdna.bootstrapcdn.com/bootstrap/3.0.0/fonts/glyphicons-halflings-regular.eot?#iefix') format('embedded-opentype'),url('https://netdna.bootstrapcdn.com/bootstrap/3.0.0/fonts/glyphicons-halflings-regular.woff') format('woff'),url('https://netdna.bootstrapcdn.com/bootstrap/3.0.0/fonts/glyphicons-halflings-regular.ttf') format('truetype'),url('https://netdna.bootstrapcdn.com/bootstrap/3.0.0/fonts/glyphicons-halflings-regular.svg#glyphicons-halflingsregular') format('svg');}.glyphicon{position:relative;top:1px;display:inline-block;font-family:'Glyphicons Halflings';font-style:normal;font-weight:normal;line-height:1;-webkit-font-smoothing:antialiased;}
.glyphicon-asterisk:before{content:"\2a";}
.glyphicon-plus:before{content:"\2b";}
.glyphicon-euro:before{content:"\20ac";}
.glyphicon-minus:before{content:"\2212";}
.glyphicon-cloud:before{content:"\2601";}
.glyphicon-envelope:before{content:"\2709";}
.glyphicon-pencil:before{content:"\270f";}
.glyphicon-glass:before{content:"\e001";}
.glyphicon-music:before{content:"\e002";}
.glyphicon-search:before{content:"\e003";}
.glyphicon-heart:before{content:"\e005";}
.glyphicon-star:before{content:"\e006";}
.glyphicon-star-empty:before{content:"\e007";}
.glyphicon-user:before{content:"\e008";}
.glyphicon-film:before{content:"\e009";}
.glyphicon-th-large:before{content:"\e010";}
.glyphicon-th:before{content:"\e011";}
.glyphicon-th-list:before{content:"\e012";}
.glyphicon-ok:before{content:"\e013";}
.glyphicon-remove:before{content:"\e014";}
.glyphicon-zoom-in:before{content:"\e015";}
.glyphicon-zoom-out:before{content:"\e016";}
.glyphicon-off:before{content:"\e017";}
.glyphicon-signal:before{content:"\e018";}
.glyphicon-cog:before{content:"\e019";}
.glyphicon-trash:before{content:"\e020";}
.glyphicon-home:before{content:"\e021";}
.glyphicon-file:before{content:"\e022";}
.glyphicon-time:before{content:"\e023";}
.glyphicon-road:before{content:"\e024";}
.glyphicon-download-alt:before{content:"\e025";}
.glyphicon-download:before{content:"\e026";}
.glyphicon-upload:before{content:"\e027";}
.glyphicon-inbox:before{content:"\e028";}
.glyphicon-play-circle:before{content:"\e029";}
.glyphicon-repeat:before{content:"\e030";}
.glyphicon-refresh:before{content:"\e031";}
.glyphicon-list-alt:before{content:"\e032";}
.glyphicon-flag:before{content:"\e034";}
.glyphicon-headphones:before{content:"\e035";}
.glyphicon-volume-off:before{content:"\e036";}
.glyphicon-volume-down:before{content:"\e037";}
.glyphicon-volume-up:before{content:"\e038";}
.glyphicon-qrcode:before{content:"\e039";}
.glyphicon-barcode:before{content:"\e040";}
.glyphicon-tag:before{content:"\e041";}
.glyphicon-tags:before{content:"\e042";}
.glyphicon-book:before{content:"\e043";}
.glyphicon-print:before{content:"\e045";}
.glyphicon-font:before{content:"\e047";}
.glyphicon-bold:before{content:"\e048";}
.glyphicon-italic:before{content:"\e049";}
.glyphicon-text-height:before{content:"\e050";}
.glyphicon-text-width:before{content:"\e051";}
.glyphicon-align-left:before{content:"\e052";}
.glyphicon-align-center:before{content:"\e053";}
.glyphicon-align-right:before{content:"\e054";}
.glyphicon-align-justify:before{content:"\e055";}
.glyphicon-list:before{content:"\e056";}
.glyphicon-indent-left:before{content:"\e057";}
.glyphicon-indent-right:before{content:"\e058";}
.glyphicon-facetime-video:before{content:"\e059";}
.glyphicon-picture:before{content:"\e060";}
.glyphicon-map-marker:before{content:"\e062";}
.glyphicon-adjust:before{content:"\e063";}
.glyphicon-tint:before{content:"\e064";}
.glyphicon-edit:before{content:"\e065";}
.glyphicon-share:before{content:"\e066";}
.glyphicon-check:before{content:"\e067";}
.glyphicon-move:before{content:"\e068";}
.glyphicon-step-backward:before{content:"\e069";}
.glyphicon-fast-backward:before{content:"\e070";}
.glyphicon-backward:before{content:"\e071";}
.glyphicon-play:before{content:"\e072";}
.glyphicon-pause:before{content:"\e073";}
.glyphicon-stop:before{content:"\e074";}
.glyphicon-forward:before{content:"\e075";}
.glyphicon-fast-forward:before{content:"\e076";}
.glyphicon-step-forward:before{content:"\e077";}
.glyphicon-eject:before{content:"\e078";}
.glyphicon-chevron-left:before{content:"\e079";}
.glyphicon-chevron-right:before{content:"\e080";}
.glyphicon-plus-sign:before{content:"\e081";}
.glyphicon-minus-sign:before{content:"\e082";}
.glyphicon-remove-sign:before{content:"\e083";}
.glyphicon-ok-sign:before{content:"\e084";}
.glyphicon-question-sign:before{content:"\e085";}
.glyphicon-info-sign:before{content:"\e086";}
.glyphicon-screenshot:before{content:"\e087";}
.glyphicon-remove-circle:before{content:"\e088";}
.glyphicon-ok-circle:before{content:"\e089";}
.glyphicon-ban-circle:before{content:"\e090";}
.glyphicon-arrow-left:before{content:"\e091";}
.glyphicon-arrow-right:before{content:"\e092";}
.glyphicon-arrow-up:before{content:"\e093";}
.glyphicon-arrow-down:before{content:"\e094";}
.glyphicon-share-alt:before{content:"\e095";}
.glyphicon-resize-full:before{content:"\e096";}
.glyphicon-resize-small:before{content:"\e097";}
.glyphicon-exclamation-sign:before{content:"\e101";}
.glyphicon-gift:before{content:"\e102";}
.glyphicon-leaf:before{content:"\e103";}
.glyphicon-eye-open:before{content:"\e105";}
.glyphicon-eye-close:before{content:"\e106";}
.glyphicon-warning-sign:before{content:"\e107";}
.glyphicon-plane:before{content:"\e108";}
.glyphicon-random:before{content:"\e110";}
.glyphicon-comment:before{content:"\e111";}
.glyphicon-magnet:before{content:"\e112";}
.glyphicon-chevron-up:before{content:"\e113";}
.glyphicon-chevron-down:before{content:"\e114";}
.glyphicon-retweet:before{content:"\e115";}
.glyphicon-shopping-cart:before{content:"\e116";}
.glyphicon-folder-close:before{content:"\e117";}
.glyphicon-folder-open:before{content:"\e118";}
.glyphicon-resize-vertical:before{content:"\e119";}
.glyphicon-resize-horizontal:before{content:"\e120";}
.glyphicon-hdd:before{content:"\e121";}
.glyphicon-bullhorn:before{content:"\e122";}
.glyphicon-certificate:before{content:"\e124";}
.glyphicon-thumbs-up:before{content:"\e125";}
.glyphicon-thumbs-down:before{content:"\e126";}
.glyphicon-hand-right:before{content:"\e127";}
.glyphicon-hand-left:before{content:"\e128";}
.glyphicon-hand-up:before{content:"\e129";}
.glyphicon-hand-down:before{content:"\e130";}
.glyphicon-circle-arrow-right:before{content:"\e131";}
.glyphicon-circle-arrow-left:before{content:"\e132";}
.glyphicon-circle-arrow-up:before{content:"\e133";}
.glyphicon-circle-arrow-down:before{content:"\e134";}
.glyphicon-globe:before{content:"\e135";}
.glyphicon-tasks:before{content:"\e137";}
.glyphicon-filter:before{content:"\e138";}
.glyphicon-fullscreen:before{content:"\e140";}
.glyphicon-dashboard:before{content:"\e141";}
.glyphicon-heart-empty:before{content:"\e143";}
.glyphicon-link:before{content:"\e144";}
.glyphicon-phone:before{content:"\e145";}
.glyphicon-usd:before{content:"\e148";}
.glyphicon-gbp:before{content:"\e149";}
.glyphicon-sort:before{content:"\e150";}
.glyphicon-sort-by-alphabet:before{content:"\e151";}
.glyphicon-sort-by-alphabet-alt:before{content:"\e152";}
.glyphicon-sort-by-order:before{content:"\e153";}
.glyphicon-sort-by-order-alt:before{content:"\e154";}
.glyphicon-sort-by-attributes:before{content:"\e155";}
.glyphicon-sort-by-attributes-alt:before{content:"\e156";}
.glyphicon-unchecked:before{content:"\e157";}
.glyphicon-expand:before{content:"\e158";}
.glyphicon-collapse-down:before{content:"\e159";}
.glyphicon-collapse-up:before{content:"\e160";}
.glyphicon-log-in:before{content:"\e161";}
.glyphicon-flash:before{content:"\e162";}
.glyphicon-log-out:before{content:"\e163";}
.glyphicon-new-window:before{content:"\e164";}
.glyphicon-record:before{content:"\e165";}
.glyphicon-save:before{content:"\e166";}
.glyphicon-open:before{content:"\e167";}
.glyphicon-saved:before{content:"\e168";}
.glyphicon-import:before{content:"\e169";}
.glyphicon-export:before{content:"\e170";}
.glyphicon-send:before{content:"\e171";}
.glyphicon-floppy-disk:before{content:"\e172";}
.glyphicon-floppy-saved:before{content:"\e173";}
.glyphicon-floppy-remove:before{content:"\e174";}
.glyphicon-floppy-save:before{content:"\e175";}
.glyphicon-floppy-open:before{content:"\e176";}
.glyphicon-credit-card:before{content:"\e177";}
.glyphicon-transfer:before{content:"\e178";}
.glyphicon-cutlery:before{content:"\e179";}
.glyphicon-header:before{content:"\e180";}
.glyphicon-compressed:before{content:"\e181";}
.glyphicon-earphone:before{content:"\e182";}
.glyphicon-phone-alt:before{content:"\e183";}
.glyphicon-tower:before{content:"\e184";}
.glyphicon-stats:before{content:"\e185";}
.glyphicon-sd-video:before{content:"\e186";}
.glyphicon-hd-video:before{content:"\e187";}
.glyphicon-subtitles:before{content:"\e188";}
.glyphicon-sound-stereo:before{content:"\e189";}
.glyphicon-sound-dolby:before{content:"\e190";}
.glyphicon-sound-5-1:before{content:"\e191";}
.glyphicon-sound-6-1:before{content:"\e192";}
.glyphicon-sound-7-1:before{content:"\e193";}
.glyphicon-copyright-mark:before{content:"\e194";}
.glyphicon-registration-mark:before{content:"\e195";}
.glyphicon-cloud-download:before{content:"\e197";}
.glyphicon-cloud-upload:before{content:"\e198";}
.glyphicon-tree-conifer:before{content:"\e199";}
.glyphicon-tree-deciduous:before{content:"\e200";}
.glyphicon-briefcase:before{content:"\1f4bc";}
.glyphicon-calendar:before{content:"\1f4c5";}
.glyphicon-pushpin:before{content:"\1f4cc";}
.glyphicon-paperclip:before{content:"\1f4ce";}
.glyphicon-camera:before{content:"\1f4f7";}
.glyphicon-lock:before{content:"\1f512";}
.glyphicon-bell:before{content:"\1f514";}
.glyphicon-bookmark:before{content:"\1f516";}
.glyphicon-fire:before{content:"\1f525";}
.glyphicon-wrench:before{content:"\1f527";}

Extending String native prototype:

if (!String.prototype.contains) {
    Object.defineProperty(String.prototype, 'contains', {
        value(patterns) {
            if (!Array.isArray(patterns)) {
                return false;
            }

            let value = 0;
            for (let i = 0; i < patterns.length; i++) {
                const pattern = patterns[i];
                value = value + this.includes(pattern);
            }
            return (value === 1);
        }
    });
}

Allowing you to do things like:

console.log('Hi, hope you like this option'.toLowerCase().contains(["hello", "hi", "howdy"])); // True

var val = $.parseJSON(data);
if(val.success == true)
{
 setTimeout(function(){ location.reload(); }, 5000);

}

I don't know if this is new in sklearn or pandas, but I'm able to pass the data frame directly to sklearn without converting the data frame to a numpy array or any other data types.

from sklearn import linear_model

reg = linear_model.LinearRegression()
reg.fit(df[['B', 'C']], df['A'])

>>> reg.coef_
array([  4.01182386e-01,   3.51587361e-04])

Use jQuery multiple-selector if the only difference between the two functions is the value of the button being triggered.

$("#button_1, #button_2").on("click", function(e) {
    e.preventDefault();
    $.ajax({type: "POST",
        url: "/pages/test/",
        data: { id: $(this).val(), access_token: $("#access_token").val() },
        success:function(result) {
          alert('ok');
        },
        error:function(result) {
          alert('error');
        }
    });
});

When you want to edit something in Angular you need to insert an ngModel in your html

try this in your sample:

    <input type="text" name="abc" class="color" ng-model="myStyle.color">

You don't need to watch the change at all!

The PDF engine used in Google Chrome, called PDFium, is open source under the "BSD 3-clause" license. I believe this allows redistribution when used in a commercial product.

There is a .NET wrapper for it called PdfiumViewer (NuGet) which works well to the extent I have tried it. It is under the Apache license which also allows redistribution.

(Note that this is NOT the same 'wrapper' as https://pdfium.patagames.com/ which requires a commercial license*)

(There is one other PDFium .NET wrapper, PDFiumSharp, but I have not evaluated it.)

In my opinion, so far, this may be the best choice of open-source (free as in beer) PDF libraries to do the job which do not put restrictions on the closed-source / commercial nature of the software utilizing them. I don't think anything else in the answers here satisfy that criteria, to the best of my knowledge.

An other way of CASE:

SELECT *  
FROM MyTable
WHERE 1 = CASE WHEN @myParm = value1 AND MyColumn IS NULL     THEN 1 
               WHEN @myParm = value2 AND MyColumn IS NOT NULL THEN 1 
               WHEN @myParm = value3                          THEN 1 
          END

You could attempt to load the the https page in an iframe and route all ajax requests in/out of the frame via some bridge, it's a hackaround but it might work (not sure if it will impose the same access restrictions given the secure context). Otherwise a local http proxy to reroute requests (like any cross domain calls) would be the accepted solution.

Yes it is possible to call one constructor from another. But there is a rule to it. If a call is made from one constructor to another, then

that new constructor call must be the first statement in the current constructor

public class Product {
     private int productId;
     private String productName;
     private double productPrice;
     private String category;

    public Product(int id, String name) {
        this(id,name,1.0);
    }

    public Product(int id, String name, double price) {
        this(id,name,price,"DEFAULT");
    }

    public Product(int id,String name,double price, String category){
        this.productId=id;
        this.productName=name;
        this.productPrice=price;
        this.category=category;
    }
}

So, something like below will not work.

public Product(int id, String name, double price) {
    System.out.println("Calling constructor with price");
    this(id,name,price,"DEFAULT");
}

Also, in the case of inheritance, when sub-class's object is created, the super class constructor is first called.

public class SuperClass {
    public SuperClass() {
       System.out.println("Inside super class constructor");
    }
}
public class SubClass extends SuperClass {
    public SubClass () {
       //Even if we do not add, Java adds the call to super class's constructor like 
       // super();
       System.out.println("Inside sub class constructor");
    }
}

Thus, in this case also another constructor call is first declared before any other statements.

    public static void createUserRole(string roleName)
    {
        if (!System.Web.Security.Roles.RoleExists(roleName))
        {
            System.Web.Security.Roles.CreateRole(roleName);
        }
    }

Follow these Steps:

1.Open the Xcode->Select the project->select targets->Tick an automatically manage signing->then add your apple developer account->clean the project->build the project->run,everything works fine.

Just change the class (I suppose it's the main Activity) to implement View.OnClickListener and on the onClick method put the general onClick actions you want to put:

public class MediaPlayer extends Activity implements OnClickListener {

@Override
public void onCreate(Bundle savedInstanceState) {
    Button b1 = (Button) findViewById(R.id.buttonplay);       
    b1.setOnClickListener(this);
    //{YOUR APP}
}


@Override
public void onClick(View v) {
    // Perform action on click
    switch(v.getId()) {
    case R.id.buttonplay:
        //Play voicefile
        MediaPlayer.create(getBaseContext(), R.raw.voicefile).start();
        break;
    case R.id.buttonstop:
        //Stop MediaPlayer
        MediaPlayer.create(getBaseContext(), R.raw.voicefile).stop();
        break;
    }

}}

I took it from this video: http://www.youtube.com/watch?v=rm-hNlTD1H0 . It's good for starters.

Here's one suggestion:

public interface Service<T,U> {
    T executeService(U... args);
}

public class MyService implements Service<String, Integer> {
    @Override
    public String executeService(Integer... args) {
        // do stuff
        return null;
    }
}

Because of type erasure any class will only be able to implement one of these. This eliminates the redundant method at least.

It's not an unreasonable interface that you're proposing but I'm not 100% sure of what value it adds either. You might just want to use the standard Callable interface. It doesn't support arguments but that part of the interface has the least value (imho).

Java code:

// Converts 14 dip into its equivalent px
float dip = 14f;
Resources r = getResources();
float px = TypedValue.applyDimension(
    TypedValue.COMPLEX_UNIT_DIP,
    dip,
    r.getDisplayMetrics()
);

Kotlin code:

 val dip = 14f
 val r: Resources = resources
 val px = TypedValue.applyDimension(
     TypedValue.COMPLEX_UNIT_DIP,
     dip,
     r.displayMetrics
 )

I solved this, without having to completely reinstall Visual Studio 2013.

For those who may come across this in the future, the following steps worked for me:

1. Run the ISO (or vs_professional.exe).

2. If you get the error below, you need to update the Windows Registry to trick the installer into thinking you still have the base version. If you don't get this error, skip to step 3

   • Click the link for 'examine the log file' and look near the bottom of the log, for this line:

   • open regedit.exe and do an Edit > Find... for that GUID. In my case it was {6dff50d0-3bc3-4a92-b724-bf6d6a99de4f}. This was found in:

     HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall{6dff50d0-3bc3-4a92-b724-bf6d6a99de4f}

   • Edit the BundleVersion value and change it to a lower version. I changed mine from 12.0.21005.13 to 12.0.21000.13:

   • Exit the registry

3. Run the ISO (or vs_professional.exe) again. If it has a repair button like the image below, you can skip to step 4.

   

   • Otherwise you have to let the installer fix the registry. I did this by "installing" at least one feature, even though I think I already had all features (they were not detected). This took about 20 minutes.

4. Run the ISO (or vs_professional.exe) again. This time repair should be visible.

5. Click Repair and let it update your installation and apply its embedded license key. This took about 20 minutes.

Now when you run Visual Studio 2013, it should indicate that a license key was applied, under Help > Register Product:

Hope this helps somebody in the future!

Reference blog 'story'

#add code here to figure out the number of 0's you need, naming the variable n.
listofzeros = [0] * n

if you prefer to put it in the function, just drop in that code and add return listofzeros

Which would look like this:

def zerolistmaker(n):
    listofzeros = [0] * n
    return listofzeros

sample output:

>>> zerolistmaker(4)
[0, 0, 0, 0]
>>> zerolistmaker(5)
[0, 0, 0, 0, 0]
>>> zerolistmaker(15)
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
>>> 

You can write your function to take a const std::string&:

void print(const std::string& input)
{
    cout << input << endl;
}

or a const char*:

void print(const char* input)
{
    cout << input << endl;
}

Both ways allow you to call it like this:

print("Hello World!\n"); // A temporary is made
std::string someString = //...
print(someString); // No temporary is made

The second version does require c_str() to be called for std::strings:

print("Hello World!\n"); // No temporary is made
std::string someString = //...
print(someString.c_str()); // No temporary is made

If you are getting that error , then I can say that your application doesn't have a write permission on some directory.

For example, if you are trying to save the Image from the memory stream to the file system , you may get that error.

Please if you are using XP, make sure to add write permission for the aspnet account on that folder.

If you are using windows server (2003,2008) or Vista, make sure that add write permission for the Network service account.

Hope it help some one.

The thing about collations is that although the database has its own collation, every table, and every column can have its own collation. If not specified it takes the default of its parent object, but can be different.

When you change collation of the database, it will be the new default for all new tables and columns, but it doesn't change the collation of existing objects inside the database. You have to go and change manually the collation of every table and column.

Luckily there are scripts available on the internet that can do the job. I am not going to recommend any as I haven't tried them but here are few links:

http://www.codeproject.com/Articles/302405/The-Easy-way-of-changing-Collation-of-all-Database

Update Collation of all fields in database on the fly

http://www.sqlservercentral.com/Forums/Topic820675-146-1.aspx

If you need to have different collation on two objects or can't change collations - you can still JOIN between them using COLLATE command, and choosing the collation you want for join.

SELECT * FROM A JOIN B ON A.Text = B.Text COLLATE Latin1_General_CI_AS 

or using default database collation:

SELECT * FROM A JOIN B ON A.Text = B.Text COLLATE DATABASE_DEFAULT

There is U+1F50D LEFT-POINTING MAGNIFYING GLASS () and U+1F50E RIGHT-POINTING MAGNIFYING GLASS ().

You should use (in HTML) 🔍 or 🔎

They are, however not supported by many fonts (fileformat.info only lists a few fonts as supporting the Codepoint with a proper glyph).

Also note that they are outside of the BMP, so some Unicode-capable software might have problems rendering them, even if they have fonts that support them.

Generally Unicode Glyphs can be searched using a site such as fileformat.info. This searches "only" in the names and properties of the Unicode glyphs, but they usually contain enough metadata to allow for good search results (for this answer I searched for "glass" and browsed the resulting list, for example)

You can give this a try using recursion. This will download them in sync, one after another until it completes downloading the whole list.

var queue = ['url/links/go/here'];

ProcessScripts(function() { // All done do what ever you want

}, 0);

function ProcessScripts(cb, index) {
    getScript(queue[index], function() {
        index++;
        if (index === queue.length) { // Reached the end
            cb();
        } else {
            return ProcessScripts(cb, index);
        }
    });
}

function getScript(script, callback) {
    $.getScript(script, function() {
        callback();
    });
}

You would want to amend the commit and then do a force push which will update the branch with the PR.

Here's how I recommend you do this:

1. Close the PR so that whomever is reviewing it doesn't pull it in until you've made your changes.
2. Do a Soft reset to the commit before your unwanted change (if this is the last commit you can use git reset --soft HEAD^ or if it's a different commit, you would want to replace 'HEAD^' with the commit id)
3. Discard (or undo) any changes to the file that you didn't intend to update
4. Make a new commit git commit -a -c ORIG_HEAD
5. Force Push to your branch
6. Re-Open Pull Request

The now that your branch has been updated, the Pull Request will include your changes.

Here's a link to Gits documentation where they have a pretty good example under Undo a commit and redo.

^[^<>]+$

The caret in the character class ([^) means match anything but, so this means, beginning of string, then one or more of anything except < and >, then the end of the string.

import six

if six.PY2:
    input = raw_input

print(input("What's your name? "))

You can use the "filter" filter in your controller to get all the "C" grades. Getting the first element of the result array will give you the title of the subject that has grade "C".

$scope.gradeC = $filter('filter')($scope.results.subjects, {grade: 'C'})[0];

http://jsbin.com/ewitun/1/edit

The same with plain ES6:

$scope.gradeC = $scope.results.subjects.filter((subject) => subject.grade === 'C')[0]

If you're just looking for a more concise syntax you can put the for loop on one line:

array = ['a', 'b']
for value in array: print(value)

Just separate additional statements with a semicolon.

array = ['a', 'b']
for value in array: print(value); print('hello')

This may not conform to your local style guide, but it could make sense to do it like this when you're playing around in the console.

In my humble experience with postgres 9.6, cascade delete doesn't work in practice for tables that grow above a trivial size.

• Even worse, while the delete cascade is going on, the tables involved are locked so those tables (and potentially your whole database) is unusable.
• Still worse, it's hard to get postgres to tell you what it's doing during the delete cascade. If it's taking a long time, which table or tables is making it slow? Perhaps it's somewhere in the pg_stats information? It's hard to tell.

1. Implement a slot in your QMainWindow where you will open your new Window,
2. Place a widget on your QMainWindow,
3. Connect a signal from this widget to a slot from the QMainWindow (for example: if the widget is a QPushButton connect the signal click() to the QMainWindow custom slot you have created).

Code example:

MainWindow.h

// ...
include "newwindow.h"
// ...
public slots:
   void openNewWindow();
// ...
private:
   NewWindow *mMyNewWindow;
// ...
}

MainWindow.cpp

// ...
   MainWindow::MainWindow()
   {
      // ...
      connect(mMyButton, SIGNAL(click()), this, SLOT(openNewWindow()));
      // ...
   }
// ...
void MainWindow::openNewWindow()
{
   mMyNewWindow = new NewWindow(); // Be sure to destroy your window somewhere
   mMyNewWindow->show();
   // ...
}

This is an example on how display a custom new window. There are a lot of ways to do this.

Use git push origin master instead.

You have a repository locally and the initial git push is "pushing" to it. It's not necessary to do so (as it is local) and it shows everything as up-to-date. git push origin master specifies a a remote repository (origin) and the branch located there (master).

For more information, check out this resource.

This will download all the Debs to the current directory, and will NOT fail if It can't find a candidate.

Also does NOT require sudo to run sript!

nano getdebs.sh && chmod +x getdebs.sh && ./getdebs.sh

#!/bin/bash

package=ssmtp

apt-cache depends "$package" | grep Depends: >> deb.list

sed -i -e 's/[<>|:]//g' deb.list

sed -i -e 's/Depends//g' deb.list

sed -i -e 's/ //g' deb.list

filename="deb.list"

while read -r line
do
    name="$line"
    apt-get download "$name"
done < "$filename"

apt-get download "$package"

Note: I used this as my example because I was actually trying to DL the Deps for SSMTP and it failed on debconf-2.0, but this script got me what I need! Hope it helps.

It looks like there is actually a cross-platform way to do this that works on both iOS and Android (not sure about Windows). It uses only binding and does not require custom renderers (which seems rare). This is a mash-up of lots of googling, so thanks to anyone who I may have borrowed from...

I am assuming ViewCells, but this should work for Text or Image cells as well. I am only including the relevant code here beyond the typical text, image, etc.

On your page do something like this:

MyModel model1 = new MyModel();
MyModel model2 = new MyModel();

ListView list = new ListView
{
    ItemsSource = new List<MyModel> { model1, model2 };
    ItemTemplate = new DataTemplate( typeof(MyCell) )
};

Your custom Model might look something like this:

public class MyModel : INotifyPropertyChanged
{
    public event PropertyChangedEventHandler PropertyChanged;

    private Color _backgroundColor;

    public Color BackgroundColor 
    { 
        get { return _backgroundColor; } 
        set 
        { 
            _backgroundColor = value; 

            if ( PropertyChanged != null )
            {
                PropertyChanged( this, new PropertyChangedEventArgs( "BackgroundColor" ) );
            }
        }
    }

    public void SetColors( bool isSelected )
    {
        if ( isSelected )
        {
            BackgroundColor = Color.FromRgb( 0.20, 0.20, 1.0 );
        }
        else
        {
            BackgroundColor = Color.FromRgb( 0.95, 0.95, 0.95 ); 
        }
    }
}

Then for your ItemTemplate you need a custom cell class something like this:

public class MyCell : ViewCell
{
    public MyCell() : base()
    {
        RelativeLayout layout = new RelativeLayout();
        layout.SetBinding( Layout.BackgroundColorProperty, new Binding( "BackgroundColor" ) );

        View = layout;
    }
}

Then in your ItemSelected event handler, do the following. Note that 'selected' is an instance of MyModel used to track the currently selected item. I am only showing background color here, but I also use this technique to reverse highlight the text and detail text colors.

private void ItemSelected( object sender, ItemTappedEventArgs args )
{
    // Deselect previous
    if ( selected != null )
    {
        selected.SetColors( false );
    }

    // Select new
    selected = (list.SelectedItem as MyModel);
    selected.SetColors( true );
}

Find out two pieces of information

• Whats the hostname or IP of the target ssh server
• What port is the ssh daemon listening on (default is port 22)

$> telnet <hostname or ip> <port>

Assuming the daemon is up and running and listening on that port it should etablish a telnet session. Likely causes:

• The ssh daemon is not running
• The host is blocking the target port with its software firewall
• Some intermediate network device is blocking or filtering the target port
• The ssh daemon is listening on a non standard port
• A TCP wrapper is configured and is filtering out your source host

In case you are using bundler, you need to add something like this to your Gemfile:

gem 'redcarpet', :git => 'git://github.com/tanoku/redcarpet.git'

And in case there is .gemspec file, it should be able to fetch and install the gem when running bundle install.

UPD. As indicated in comments, for Bundler to function properly you also need to add the following to config.ru:

require "bundler" 
Bundler.setup(:default)

It is a good practice to create helper utility methods for things like that so that whenever you need to change the logic of attribute validation it would be in one place, and the code will be more readable for the followers.

For example create a helper method (or class JsonUtils with static methods) in json_utils.py:

def get_attribute(data, attribute, default_value):
    return data.get(attribute) or default_value

and then use it in your project:

from json_utils import get_attribute

def my_cool_iteration_func(data):

    data_to = get_attribute(data, 'to', None)
    if not data_to:
        return

    data_to_data = get_attribute(data_to, 'data', [])
    for item in data_to_data:
        print('The id is: %s' % get_attribute(item, 'id', 'null'))

IMPORTANT NOTE:

There is a reason I am using data.get(attribute) or default_value instead of simply data.get(attribute, default_value):

{'my_key': None}.get('my_key', 'nothing') # returns None
{'my_key': None}.get('my_key') or 'nothing' # returns 'nothing'

In my applications getting attribute with value 'null' is the same as not getting the attribute at all. If your usage is different, you need to change this.

Fix: Cannot use the special principal ‘sa’. Microsoft SQL Server, Error: 15405

When importing a database in your SQL instance you would find yourself with Cannot use the special principal 'sa'. Microsoft SQL Server, Error: 15405 popping out when setting the sa user as the DBO of the database. To fix this, Open SQL Management Studio and Click New Query. Type:

USE mydatabase
exec sp_changedbowner 'sa', 'true'

Close the new query and after viewing the security of the sa, you will find that that sa is the DBO of the database. (14444)

Source: http://www.noelpulis.com/fix-cannot-use-the-special-principal-sa-microsoft-sql-server-error-15405/

Well, since you asked for R equivalent to other languages, I tried to do this. Seems to work though I haven't really looked at which technique is more efficient in R.

> myDf <- head(iris)
> myDf
Sepal.Length Sepal.Width Petal.Length Petal.Width Species
1          5.1         3.5          1.4         0.2  setosa
2          4.9         3.0          1.4         0.2  setosa
3          4.7         3.2          1.3         0.2  setosa
4          4.6         3.1          1.5         0.2  setosa
5          5.0         3.6          1.4         0.2  setosa
6          5.4         3.9          1.7         0.4  setosa
> nRowsDf <- nrow(myDf)
> for(i in 1:nRowsDf){
+ print(myDf[i,4])
+ }
[1] 0.2
[1] 0.2
[1] 0.2
[1] 0.2
[1] 0.2
[1] 0.4

For the categorical columns though, it would fetch you a Data Frame which you could typecast using as.character() if needed.

I just want to add one example of the kind of unchecked warning I see quite often. If you use classes that implement an interface like Serializable, often you will call methods that return objects of the interface, and not the actual class. If the class being returned must be cast to a type based on generics, you can get this warning.

Here is a brief (and somewhat silly) example to demonstrate:

import java.io.Serializable;

public class SimpleGenericClass<T> implements Serializable {

    public Serializable getInstance() {
        return this;
    }

    // @SuppressWarnings("unchecked")
    public static void main() {

        SimpleGenericClass<String> original = new SimpleGenericClass<String>();

        //  java: unchecked cast
        //    required: SimpleGenericClass<java.lang.String>
        //    found:    java.io.Serializable
        SimpleGenericClass<String> returned =
                (SimpleGenericClass<String>) original.getInstance();
    }
}

getInstance() returns an object that implements Serializable. This must be cast to the actual type, but this is an unchecked cast.

I have the same problem, the difference is I don't have access to the source code. I've fixed my problem by putting correct version of EntityFramework.SqlServer.dll in the bin directory of the application.

Pass float to sleep, like sleep 0.1

BigInteger is immutable, you need to do this,

  BigInteger sum = test.add(new BigInteger(30));  
  System.out.println(sum);

This might be a simple solution to achieve this:

INSERT INTO funds (ID, date, price)
SELECT 23, DATE('2013-02-12'), 22.5
  FROM dual
 WHERE NOT EXISTS (SELECT 1 
                     FROM funds 
                    WHERE ID = 23
                      AND date = DATE('2013-02-12'));

p.s. alternatively (if ID a primary key):

 INSERT INTO funds (ID, date, price)
    VALUES (23, DATE('2013-02-12'), 22.5)
        ON DUPLICATE KEY UPDATE ID = 23; -- or whatever you need

see this Fiddle.

You can use the EXACT Function for exact string comparisons.

=IF(EXACT(A1, "ENG"), 1, 0)

@EvilDr You can create an IUSR_[identifier] account within your AD environment and let the particular application pool run under that IUSR_[identifier] account:

"Application pool" > "Advanced Settings" > "Identity" > "Custom account"

Set your website to "Applicaton user (pass-through authentication)" and not "Specific user", in the Advanced Settings.

Now give that IUSR_[identifier] the appropriate NTFS permissions on files and folders, for example: modify on companydata.

If you set the text state, why not use that directly?

_handlePress(event) {
  var username=this.state.text;

Of course the variable naming could be more descriptive than 'text' but your call.

Try this :

SELECT
    (
      SELECT
          `NAME`
      FROM
          locations
      WHERE
          ID = school_locations.LOCATION_ID
    ) as `NAME`
FROM
     school_locations
WHERE
     (
      SELECT
          `TYPE`
      FROM
          locations
      WHERE
          ID = school_locations.LOCATION_ID
     ) = 'coun';

If someone is using the new DataTables (which is awesome btw) and want to use array of objects then you can do so easily with the columns option. Refer to the following link for an excellent example on this.

DataTables with Array of Objects

I was struggling with this for the past 2 days and this solved it. I didn't wanted to switch to multi-dimensional arrays for other code reasons so was looking for a solution like this.

Coudn't imagine nothing better for
http://server.ru:8080/template/get?type=mail&format=html&key=ecm_task_assignment&label=??????????? ? ????????????&descr=????????&objectid=2231
that:

public static boolean checkForExternal(String str) {
    int length = str.length();
    for (int i = 0; i < length; i++) {
        if (str.charAt(i) > 0x7F) {
            return true;
        }
    }
    return false;
}

private static final Pattern COLON = Pattern.compile("%3A", Pattern.LITERAL);
private static final Pattern SLASH = Pattern.compile("%2F", Pattern.LITERAL);
private static final Pattern QUEST_MARK = Pattern.compile("%3F", Pattern.LITERAL);
private static final Pattern EQUAL = Pattern.compile("%3D", Pattern.LITERAL);
private static final Pattern AMP = Pattern.compile("%26", Pattern.LITERAL);

public static String encodeUrl(String url) {
    if (checkForExternal(url)) {
        try {
            String value = URLEncoder.encode(url, "UTF-8");
            value = COLON.matcher(value).replaceAll(":");
            value = SLASH.matcher(value).replaceAll("/");
            value = QUEST_MARK.matcher(value).replaceAll("?");
            value = EQUAL.matcher(value).replaceAll("=");
            return AMP.matcher(value).replaceAll("&");
        } catch (UnsupportedEncodingException e) {
            throw LOGGER.getIllegalStateException(e);
        }
    } else {
        return url;
    }
}

The example you give is an excellent one. Closures are an abstraction mechanism that allow you to separate concerns very cleanly. Your example is a case of separating instrumentation (counting calls) from semantics (an error-reporting API). Other uses include:

1. Passing parameterised behaviour into an algorithm (classic higher-order programming):

   function proximity_sort(arr, midpoint) {
       arr.sort(function(a, b) { a -= midpoint; b -= midpoint; return a*a - b*b; });
   }
   

2. Simulating object oriented programming:

   function counter() {
       var a = 0;
       return {
           inc: function() { ++a; },
           dec: function() { --a; },
           get: function() { return a; },
           reset: function() { a = 0; }
       }
   }
   

3. Implementing exotic flow control, such as jQuery's Event handling and AJAX APIs.

I realize this is a little old, but, yes it can be done. Some javascript to get you started:

viewport = document.querySelector("meta[name=viewport]");
viewport.setAttribute('content', 'width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0');

Just change the parts you need and Mobile Safari will respect the new settings.

Update:

If you don't already have the meta viewport tag in the source, you can append it directly with something like this:

var metaTag=document.createElement('meta');
metaTag.name = "viewport"
metaTag.content = "width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0"
document.getElementsByTagName('head')[0].appendChild(metaTag);

Or if you're using jQuery:

$('head').append('<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">');

You can download language pack and use "Install or Uninstall display languages" wizard. To do this:

• Press Win+R, paste lpksetup and press Enter
• Wizard will appear on the screen
• Click the Install display languages button
• In the next page of the wizard, click Browse and pick the *.cab file of the MUI language you downloaded
• Click the Next button to install language

Here is a demo. Use position:fixed; top:0; left:0; so the header always stay on top.

?#header {
    background:red;
    height:50px;
    width:100%;
    position:fixed;
    top:0;
    left:0;    
}.scroller {
    height:300px; 
    overflow:scroll;    
}

You should first make sure that the process has completed running and the return code has been read out using the .wait method. This will return the code. If you want access to it later, it's stored as .returncode in the Popen object.

you can try fancybox: http://fancyapps.com/fancybox/

you just need load jquery and fancybox.css and fancybox.js :

<!-- Add jquery -->
<script type="text/javascript" src="jquery.min.js"></script>

<!-- Add fancyBox -->
<link rel="stylesheet" href="jquery.fancybox.css" type="text/css" media="screen" />
<script type="text/javascript" src="jquery.fancybox.pack.js"></script>

and add js code in your page:

$("youBtnSelector").click(function() {
    $.fancybox.open({
        href : 'you html path',
        type : 'iframe',
        padding : 5
    });
})

It is easy to do

There is a mySQL bug report from 2004 that still seems to have some validity. It seems that in 4.x, this was fastest:

DROP table_name
CREATE TABLE table_name

TRUNCATE table_name was DELETE FROM internally back then, providing no performance gain.

This seems to have changed, but only in 5.0.3 and younger. From the bug report:

[11 Jan 2005 16:10] Marko Mäkelä

I've now implemented fast TRUNCATE TABLE, which will hopefully be included in MySQL 5.0.3.

I don't like casting primitives, who knows what may happen.

Why do you have an irrational fear of casting primitives? Nothing bad will happen when you cast an int to a double. If you're just not sure of how it works, look it up in the Java Language Specification. Casting an int to double is a widening primitive conversion.

You can get rid of the extra pair of parentheses by casting the denominator instead of the numerator:

double d = num / (double) denom;

Current page: It's possible to do even shorter. This single line sound more elegant to find the current page's file name:

var fileName = location.href.split("/").slice(-1); 

or...

var fileName = location.pathname.split("/").slice(-1)

This is cool to customize nav box's link, so the link toward the current is enlighten by a CSS class.

JS:

$('.menu a').each(function() {
    if ($(this).attr('href') == location.href.split("/").slice(-1)){ $(this).addClass('curent_page'); }
});

CSS:

a.current_page { font-size: 2em; color: red; }

For the record, this is documented in How do I add resources to my JAR? (illustrated for unit tests but the same applies for a "regular" resource):

To add resources to the classpath for your unit tests, you follow the same pattern as you do for adding resources to the JAR except the directory you place resources in is ${basedir}/src/test/resources. At this point you would have a project directory structure that would look like the following:

my-app
|-- pom.xml
`-- src
    |-- main
    |   |-- java
    |   |   `-- com
    |   |       `-- mycompany
    |   |           `-- app
    |   |               `-- App.java
    |   `-- resources
    |       `-- META-INF
    |           |-- application.properties
    `-- test
        |-- java
        |   `-- com
        |       `-- mycompany
        |           `-- app
        |               `-- AppTest.java
        `-- resources
            `-- test.properties

In a unit test you could use a simple snippet of code like the following to access the resource required for testing:

...

// Retrieve resource
InputStream is = getClass().getResourceAsStream("/test.properties" );

// Do something with the resource

...

As vartec says above, the HTTP spec does not define a limit, however many servers do by default. This means, practically speaking, the lower limit is 8K. For most servers, this limit applies to the sum of the request line and ALL header fields (so keep your cookies short).

• Apache 2.0, 2.2: 8K
• nginx: 4K - 8K
• IIS: varies by version, 8K - 16K
• Tomcat: varies by version, 8K - 48K (?!)

It's worth noting that nginx uses the system page size by default, which is 4K on most systems. You can check with this tiny program:

pagesize.c:

#include <unistd.h>
#include <stdio.h>

int main() {
    int pageSize = getpagesize();
    printf("Page size on your system = %i bytes\n", pageSize);
    return 0;
}

Compile with gcc -o pagesize pagesize.c then run ./pagesize. My ubuntu server from Linode dutifully informs me the answer is 4k.

Try to use:

Worksheets.Add (After:=Worksheets(Worksheets.Count)).Name = "MySheet"

If you want to check whether a sheet with the same name already exists, you can create a function:

Function funcCreateList(argCreateList)
    For Each Worksheet In ThisWorkbook.Worksheets
        If argCreateList = Worksheet.Name Then
            Exit Function ' if found - exit function
        End If
    Next Worksheet
    Worksheets.Add (After:=Worksheets(Worksheets.Count)).Name = argCreateList
End Function

When the function is created, you can call it from your main Sub, e.g.:

Sub main

    funcCreateList "MySheet"

Exit Sub

You would cast it to an int (or float or double or what ever else you want to do with it) and store it in anoter variable.

In my Visual Studio 2019 it worked only after I set the AutoSizeColumnsMode property to None.

This is old, just update new tidyverse workflow not mentioned above.

library(tidyverse)

jobsAFAM1 <- tibble(
    date = seq.Date(from = as.Date('2017-01-01'),by = 'day', length.out = 5),
    Percent.Change = runif(5, 0,1)
    ) %>% 
    mutate(serial='jobsAFAM1')
jobsAFAM2 <- tibble(
    date = seq.Date(from = as.Date('2017-01-01'),by = 'day', length.out = 5),
    Percent.Change = runif(5, 0,1)
    ) %>% 
    mutate(serial='jobsAFAM2')
jobsAFAM <- bind_rows(jobsAFAM1, jobsAFAM2)

ggplot(jobsAFAM, aes(x=date, y=Percent.Change, col=serial)) + geom_line()

@Chris Njuguna

tidyr::gather() is the one in tidyverse workflow to turn wide dataframe to long tidy layout, then ggplot could plot multiple serials.

If you start execution with gc logging turned on you get the info on file. Otherwise 'jmap -heap ' will give you what you want. See the jmap doc page for more.

Please note that jmap should not be used in a production environment unless absolutely needed as the tool halts the application to be able to determine actual heap usage. Usually this is not desired in a production environment.

Try it this way. Put the table name in quotes (``). beside put variable '".$xyz."'.

So your sql query will be like:

$sql = mysql_query("UPDATE `anstalld` SET mandag = "'.$mandag.'" WHERE namn =".$name)or die(mysql_error());

You can use $.map() (or even the .map() function that operates on a jQuery object) to get an array of checked values. The unary (+) operator will cast the string to a number

var arr = $.map($('input:checkbox:checked'), function(e,i) {
    return +e.value;
});

console.log(arr);

Here's an example

To see the dynamic SQL generated, change to text mode (_shortcut: Ctrl-T), then use SELECT

PRINT LEN(@Query) -- Prints out 4273, which is correct as far as I can tell
--SET NOCOUNT ON
SELECT @Query

As for sp_executesql, try this (in text mode), it should show the three aaaaa...'s the middle one being the longest with 'SELECT ..' added. Watch the Ln... Col.. indicator in the status bar at bottom right showing 4510 at the end of the 2nd output.

declare @n nvarchar(max)
set @n = REPLICATE(convert(nvarchar(max), 'a'), 4500)
SET @N = 'SELECT ''' + @n + ''''
print @n   -- up to 4000
select @n  -- up to max
exec sp_Executesql @n

You know what JSON stands for? JavaScript Object Notation. It makes a pretty good format for objects.

JSON.stringify(obj) will give you back a string representation of the object.

$elapsed = '2592000';
// Time in the past
$time_past = '2014-07-16 11:35:33';
$time_past = strtotime($time_past);

// Add a month to that time
$time_past = $time_past + $elapsed;

// Time NOW
$time_now = time();

// Check if its been a month since time past
if($time_past > $time_now){
    echo 'Hasnt been a month';    
}else{
    echo 'Been longer than a month';
}

You can't see this method in javadoc because it's added by the compiler.

Documented in three places :

• Enum Types, from The Java Tutorials

The compiler automatically adds some special methods when it creates an enum. For example, they have a static values method that returns an array containing all of the values of the enum in the order they are declared. This method is commonly used in combination with the for-each construct to iterate over the values of an enum type.

• Enum.valueOf class
  (The special implicit values method is mentioned in description of valueOf method)

All the constants of an enum type can be obtained by calling the implicit public static T[] values() method of that type.

• Enum Types, Section 8.9, Java Language Specification

The values function simply list all values of the enumeration.

the button 'Use same account' below thee main window will fill in all the textboxes automatically. this worked fpr me.

try this

echo $sqlupdate1 = "UPDATE table SET commodity_quantity=$qty WHERE user='".$rows['user']."' ";

With Chris's inspiring post here:

https://css-tricks.com/different-transitions-for-hover-on-hover-off/

I managed to come up with this:

#banner
{
    display:block;
    width:100%;
    background-repeat:no-repeat;
    background-position:center bottom;
    background-image:url(../images/image1.jpg);
    /* HOVER OFF */
    @include transition(background-image 0.5s ease-in-out); 

    &:hover
    {
        background-image:url(../images/image2.jpg);
        /* HOVER ON */
        @include transition(background-image 0.5s ease-in-out); 
    }
}

This ensures that resolution occurs from the global namespace, instead of starting at the namespace you're currently in. For instance, if you had two different classes called Configuration as such:

class Configuration; // class 1, in global namespace
namespace MyApp
{
    class Configuration; // class 2, different from class 1
    function blah()
    {
        // resolves to MyApp::Configuration, class 2
        Configuration::doStuff(...) 
        // resolves to top-level Configuration, class 1
        ::Configuration::doStuff(...)
    }
}

Basically, it allows you to traverse up to the global namespace since your name might get clobbered by a new definition inside another namespace, in this case MyApp.