You can think of Python global variables as "module" variables - and as such they are much more useful than the traditional "global variables" from C.

A global variable is actually defined in a module's __dict__ and can be accessed from outside that module as a module attribute.

So, in your example:

# ../myproject/main.py

# Define global myList
# global myList  - there is no "global" declaration at module level. Just inside
# function and methods
myList = []

# Imports
import subfile

# Do something
subfile.stuff()
print(myList[0])

And:

# ../myproject/subfile.py

# Save "hey" into myList
def stuff():
     # You have to make the module main available for the 
     # code here.
     # Placing the import inside the function body will
     # usually avoid import cycles - 
     # unless you happen to call this function from 
     # either main or subfile's body (i.e. not from inside a function or method)
     import main
     main.mylist.append("hey")

This should help you

HTML

<!-- pretty much i just need to click a link within the regions table and it changes to the neccesary div. -->

<table>
<tr class="thumb"></tr>
    <td><a href="#" class="showall">All Regions</a> (shows main map) (link)</td>   

<tr class="thumb"></tr>
<td>Northern Region (link)</td>
</tr>

<tr class="thumb"></tr>
<td>Southern Region (link)</td>
</tr>

<tr class="thumb"></tr>
<td>Eastern Region (link)</td>
</tr>
</table>
<br />

<div id="mainmapplace">
    <div id="mainmap">
        All Regions image
    </div>
</div>
<div id="region">
    <div class="replace">northern image</div>
    <div class="replace">southern image</div>
    <div class="replace">Eastern image</div>
</div>

JavaScript

var originalmap;
var flag = false;

$(function (){

    $(".replace").click(function(){
            flag = true;
            originalmap = $('#mainmap');
            $('#mainmap').replaceWith($(this));
        });

    $('.showall').click(
        function(){
            if(flag == true){
                $('#region').append($('#mainmapplace .replace'));                
                $('#mainmapplace').children().remove();
                $('#mainmapplace').append($(originalmap));
                //$('#mapplace').append();
            }
        }
    )

})

CSS

#mainmapplace{
    width: 100px;
    height: 100px;
    background: red;
}

#region div{
    width: 100px;
    height: 100px;
    background: blue;
    margin: 10px 0 0 0;
}

Use assertNotNull(obj). assert means must be.

SELECT * FROM SysColumns WHERE Name like 'a%'

Will get you a list of columns, you will want to filter more to restrict it to your target table

From there you can construct some ad-hoc sql

   dt = abj.getDataTable(
"select bookrecord.userid,usermaster.userName, "
                                                +" book.bookname,bookrecord.fromdate, "
                                                +" bookrecord.todate,bookrecord.bookstatus "
                                                +" from book,bookrecord,usermaster " 
                                                +" where bookrecord.bookid='"+ bookId +"' "
                                                +" and usermaster.userId=bookrecord.userid "
                                                +" and book.bookid='"+ bookId +"'");

You can use lambda expression like this.

int index = listOfElements.FindIndex(item => item.Id == id);  
if (index != -1) 
{
    listOfElements[index] = newValue;
}

From the point of view of making thinks simple, readable, consistent and easy to understand (since performance doesn't matter here):

• Using embedded vars in double quotes can lead to complex and confusing situations when you want to embed object properties, multidimentional arrays etc. That is, generally when reading embedded vars, you cannot be instantly 100% sure of the final behavior of what you are reading.

• You frequently need add crutches such as {} and \, which IMO adds confusion and makes concatenation readability nearly equivalent, if not better.

• As soon as you need to wrap a function call around the var, for example htmlspecialchars($var), you have to switch to concatenation.

• AFAIK, you cannot embed constants.

In some specific cases, "double quotes with vars embedding" can be useful, but generally speaking, I would go for concatenation (using single or double quotes when convenient)

How about something like: Using HTML Agility Pack

HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(@"<html><body><p><table id=""foo""><tr><th>hello</th></tr><tr><td>world</td></tr></table></body></html>");
foreach (HtmlNode table in doc.DocumentNode.SelectNodes("//table")) {
    Console.WriteLine("Found: " + table.Id);
    foreach (HtmlNode row in table.SelectNodes("tr")) {
        Console.WriteLine("row");
        foreach (HtmlNode cell in row.SelectNodes("th|td")) {
            Console.WriteLine("cell: " + cell.InnerText);
        }
    }
}

Note that you can make it prettier with LINQ-to-Objects if you want:

var query = from table in doc.DocumentNode.SelectNodes("//table").Cast<HtmlNode>()
            from row in table.SelectNodes("tr").Cast<HtmlNode>()
            from cell in row.SelectNodes("th|td").Cast<HtmlNode>()
            select new {Table = table.Id, CellText = cell.InnerText};

foreach(var cell in query) {
    Console.WriteLine("{0}: {1}", cell.Table, cell.CellText);
}

Form data (for GET or POST) is usually encoded as application/x-www-form-urlencoded: this specifies + for spaces.

URLs are encoded as RFC 1738 which specifies %20.

In theory I think you should have %20 before the ? and + after:

example.com/foo%20bar?foo+bar

You could also pass points to the function: Small example:

def test(points):
    addpoint = raw_input ("type ""add"" to add a point")
    if addpoint == "add":
        points = points + 1
    else:
        print "asd"
    return points;
if __name__ == '__main__':
    points = 0
    for i in range(10):
        points = test(points)
        print points

The general rule of thumb is that you don't modify a collection/array/list while iterating over it.

Use a secondary list to store the items you want to act upon and execute that logic in a loop after your initial loop.

"We usually put ' (space)' after the first sentence before a new line, but it doesn't work in Jupyter."

That inspired me to try using two spaces instead of just one - and it worked!!

(Of course, that functionality could possibly have been introduced between when the question was asked in January 2017, and when my answer was posted in March 2018.)

"... that are independent of their timezone"

var timezone =  d.getTimezoneOffset() // difference in minutes from GMT

Automatically not split data to multi pages. You may split manually.

If your ( rowCount * rowHeight ) > 420mm ( A3 Height in mm ) add new page function. ( Sorry I can't edit your code without run ) After add new page leftMargin, topMargin = 0; ( start over ) I added sample code with yours. I hope it's right.

else {
    doc.margins = 1;
    doc.setFont("Times  ");
    doc.setFontType("normal ");
    doc.setFontSize(11);
    if ( rowCount * rowHeight > 420 ) {
        doc.addPage();
        rowCount = 3; // skip 1 and 2 above
    } else {
        // now rowcount = 3 ( top of new page for 3 )
        // j is your x axis cell index ( j start from 0 on $.each function ) or you can add cellCount like rowCount and replace with
        // rowcount is your y axis cell index
        left = ( ( j ) * ( cellWidth + leftMargin );
        top = ( ( rowcount - 3 ) * ( rowHeight + topMargin );
        doc.cell( leftMargin, top, cellWidth, rowHeight, cellContent, i);
        // 1st=left margin    2nd parameter=top margin,     3rd=row cell width      4th=Row height
    }
}

You can convert html directly to pdf lossless. Youtube video for html => pdf example

REST means working with the standards of the web, and the standard for "secure" transfer on the web is SSL. Anything else is going to be kind of funky and require extra deployment effort for clients, which will have to have encryption libraries available.

Once you commit to SSL, there's really nothing fancy required for authentication in principle. You can again go with web standards and use HTTP Basic auth (username and secret token sent along with each request) as it's much simpler than an elaborate signing protocol, and still effective in the context of a secure connection. You just need to be sure the password never goes over plain text; so if the password is ever received over a plain text connection, you might even disable the password and mail the developer. You should also ensure the credentials aren't logged anywhere upon receipt, just as you wouldn't log a regular password.

HTTP Digest is a safer approach as it prevents the secret token being passed along; instead, it's a hash the server can verify on the other end. Though it may be overkill for less sensitive applications if you've taken the precautions mentioned above. After all, the user's password is already transmitted in plain-text when they log in (unless you're doing some fancy JavaScript encryption in the browser), and likewise their cookies on each request.

Note that with APIs, it's better for the client to be passing tokens - randomly generated strings - instead of the password the developer logs into the website with. So the developer should be able to log into your site and generate new tokens that can be used for API verification.

The main reason to use a token is that it can be replaced if it's compromised, whereas if the password is compromised, the owner could log into the developer's account and do anything they want with it. A further advantage of tokens is you can issue multiple tokens to the same developers. Perhaps because they have multiple apps or because they want tokens with different access levels.

(Updated to cover implications of making the connection SSL-only.)

Information about missing entry point error installing legacy VB6 compiled applications on Windows 10 which I hope could be useful to someone.

Missing OCX files can be found in the "OS\System folder" of the Visual Basic 6.0 installer package. Today I copied the relevant OCX file (from our network) to the local computer

And then I typed the commands below, as administrator, which normally work to register it.

cd \windows\syswow64
regsvr32.exe /u mscomctl.ocx
regsvr32.exe /i mscomctl.ocx

(add the path to the locally copied file for the /i command)

However today I got errors from both these regsvr32.exe commands.

The second error was giving the DllImport missing entry point error which is similar to the error mentioned by the original poster.

To resolve, one of the things I tried was leaving out the switch -

regsvr32.exe mscomctl.ocx

To my surprise it then said it was successful. To confirm, the application started up properly afterwards.

You can use IP Webcam, or perhaps use DLNA. For example Samsung devices come with an app called AllShare which can share and access DLNA enabled devices on the network. I think IP Webcam is your best bet, though. You should be able to open the stream it creates using MX Video player or something like that.

'vb.net
'Extended file stributes
'visual basic .net sample 

Dim sFile As Object
        Dim oShell = CreateObject("Shell.Application")
        Dim oDir = oShell.Namespace("c:\temp")

        For i = 0 To 34
            TextBox1.Text = TextBox1.Text & oDir.GetDetailsOf(oDir, i) & vbCrLf
            For Each sFile In oDir.Items
                TextBox1.Text = TextBox1.Text & oDir.GetDetailsOf(sFile, i) & vbCrLf
            Next
            TextBox1.Text = TextBox1.Text & vbCrLf
        Next

When you've written something that isn't allowed by the language standard (and therefore can't really be well-defined behaviour, which is reason enough to not do it) but happens to map to some kind of executable if fed naïvely to the compiling engine, then -fpermissive will do just that instead of stopping with this error message. In some cases, the program will then behave exactly as you originally intended, but you definitely shouldn't rely on it unless you have some very special reason not to use some other solution.

You can use (hidden) cells as variables. E.g., you could hide Column C, set C1 to

=20

and use it as

=c1*20

Alternatively you can write VBA Macros which set and read a global variable.

Edit: AKX renders my Answer partially incorrect. I had no idea you could name cells in Excel.

The bash for consists on a variable (the iterator) and a list of words where the iterator will, well, iterate.

So, if you have a limited list of words, just put them in the following syntax:

for w in word1 word2 word3
do
  doSomething($w)
done

Probably you want to iterate along some numbers, so you can use the seq command to generate a list of numbers for you: (from 1 to 100 for example)

seq 1 100

and use it in the FOR loop:

for n in $(seq 1 100)
do
  doSomething($n)
done

Note the $(...) syntax. It's a bash behaviour, it allows you to pass the output from one command (in our case from seq) to another (the for)

This is really useful when you have to iterate over all directories in some path, for example:

for d in $(find $somepath -type d)
do
  doSomething($d)
done

The possibilities are infinite to generate the lists.

Here's an example for rotating about an arbitrary point (x,y) using only openCV

def rotate_about_point(x, y, degree, image):
    rot_mtx = cv.getRotationMatrix2D((x, y), angle, 1)
    abs_cos = abs(rot_mtx[0, 0])
    abs_sin = abs(rot_mtx[0, 1])
    rot_wdt = int(frm_hgt * abs_sin + frm_wdt * abs_cos)
    rot_hgt = int(frm_hgt * abs_cos + frm_wdt * abs_sin)
    rot_mtx += np.asarray([[0, 0, -lftmost_x],
                           [0, 0, -topmost_y]])
    rot_img = cv.warpAffine(image, rot_mtx, (rot_wdt, rot_hgt),
                            borderMode=cv.BORDER_CONSTANT)
    return rot_img

As the best anwser have writed using XMLHttpResponse except window.open, and I make the abstracts-anwser as a instance.

The main Js file is download.js Download-JS

 // var download_url = window.BASE_URL+ "/waf/p1/download_rules";
    var download_url = window.BASE_URL+ "/waf/p1/download_logs_by_dt";
    function download33() {
        var sender_data = {"start_time":"2018-10-9", "end_time":"2018-10-17"};
        var x=new XMLHttpRequest();
        x.open("POST", download_url, true);
        x.setRequestHeader("Content-type","application/json");
//        x.setRequestHeader("Access-Control-Allow-Origin", "*");
        x.setRequestHeader("Authorization", "JWT " + localStorage.token );
        x.responseType = 'blob';
        x.onload=function(e){download(x.response, "test211.zip", "application/zip" ); }
        x.send( JSON.stringify(sender_data) ); // post-data
    }

You can loop over recipientce like:

foreach (['[email protected]', '[email protected]'] as $recipient) {
    Mail::to($recipient)->send(new OrderShipped($order));
}

See documentation here

Try using SweetAlert its just simply the best . You will get a lot of customization and flexibility.

Confirm Example

sweetAlert(
  {
    title: "Are you sure?",
    text: "You will not be able to recover this imaginary file!",
    type: "warning",   
    showCancelButton: true,   
    confirmButtonColor: "#DD6B55",
    confirmButtonText: "Yes, delete it!"
  }, 
  deleteIt()
);

If you are using STS, then goto STS/Contents/Eclipse directory and open the STS.ini file.

From the STS.ini file, remove the flooring line:

-Dorg.eclipse.swt.internal.carbon.smallFonts

And restart the STS.

You have 2 choices as far as I know:

1. Spreadsheet_Excel_Reader, which knows the Office 2003 binary format
2. PHPExcel, which knows both Office 2003 as well as Excel 2007 (XML). (Follow the link, and you'll see they upgraded this library to PHPSpreadSheet)

PHPExcel uses Spreadsheet_Excel_Reader for the Office 2003 format.

Update: I once had to read some Excel files but I used the Office 2003 XML format in order to read them and told the people that were using the application to save and upload only that type of Excel file.

It used to be installed with the .NET framework. MsBuild v12.0 (2013) is now bundled as a stand-alone utility and has it's own installer.

http://www.microsoft.com/en-us/download/confirmation.aspx?id=40760

To reference the location of MsBuild.exe from within an MsBuild script, use the default $(MsBuildToolsPath) property.

My favorite:

https://inloop.github.io/sqlite-viewer/

No installation needed. Just drop the file.

Just for completeness, another way is std::string(&v[0]) (although you need to ensure your string is null-terminated and std::string(v.data()) is generally to be preferred.

The difference is that you can use the former technique to pass the vector to functions that want to modify the buffer, which you cannot do with .data().

every minute:

* * * * * /path/to/php /var/www/html/a.php

every 24hours (every midnight):

0 0 * * * /path/to/php /var/www/html/reset.php

See this reference for how crontab works: http://adminschoice.com/crontab-quick-reference, and this handy tool to build cron jobx: http://www.htmlbasix.com/crontab.shtml

Yes, you can. Return an Action like this :

return RedirectToAction("View", "Name of Controller");

An example:

return RedirectToAction("Details/" + id.ToString(), "FullTimeEmployees");

This approach will call the GET method

Also you could pass values to action like this:

return RedirectToAction("Details/" + id.ToString(), "FullTimeEmployees", new {id = id.ToString(), viewtype = "extended" });

The problem is that you're trying start the animation too early in the view controller's lifecycle. In viewDidLoad, the view has just been created, and hasn't yet been added to the view hierarchy, so attempting to animate one of its subviews at this point produces bad results.

What you really should be doing is continuing to set the alpha of the view in viewDidLoad (or where you create your views), and then waiting for the viewDidAppear: method to be called. At this point, you can start your animations without any issue.

override func viewDidAppear(_ animated: Bool) {
    super.viewDidAppear(animated)

    UIView.animate(withDuration: 1.5) {
        self.myFirstLabel.alpha = 1.0
        self.myFirstButton.alpha = 1.0
        self.mySecondButton.alpha = 1.0
    }
}

No.

The content-type should be whatever it is known to be, if you know it. application/octet-stream is defined as "arbitrary binary data" in RFC 2046, and there's a definite overlap here of it being appropriate for entities whose sole intended purpose is to be saved to disk, and from that point on be outside of anything "webby". Or to look at it from another direction; the only thing one can safely do with application/octet-stream is to save it to file and hope someone else knows what it's for.

You can combine the use of Content-Disposition with other content-types, such as image/png or even text/html to indicate you want saving rather than display. It used to be the case that some browsers would ignore it in the case of text/html but I think this was some long time ago at this point (and I'm going to bed soon so I'm not going to start testing a whole bunch of browsers right now; maybe later).

RFC 2616 also mentions the possibility of extension tokens, and these days most browsers recognise inline to mean you do want the entity displayed if possible (that is, if it's a type the browser knows how to display, otherwise it's got no choice in the matter). This is of course the default behaviour anyway, but it means that you can include the filename part of the header, which browsers will use (perhaps with some adjustment so file-extensions match local system norms for the content-type in question, perhaps not) as the suggestion if the user tries to save.

Hence:

Content-Type: application/octet-stream
Content-Disposition: attachment; filename="picture.png"

Means "I don't know what the hell this is. Please save it as a file, preferably named picture.png".

Content-Type: image/png
Content-Disposition: attachment; filename="picture.png"

Means "This is a PNG image. Please save it as a file, preferably named picture.png".

Content-Type: image/png
Content-Disposition: inline; filename="picture.png"

Means "This is a PNG image. Please display it unless you don't know how to display PNG images. Otherwise, or if the user chooses to save it, we recommend the name picture.png for the file you save it as".

Of those browsers that recognise inline some would always use it, while others would use it if the user had selected "save link as" but not if they'd selected "save" while viewing (or at least IE used to be like that, it may have changed some years ago).

Since mongo 3.6 you can use 'change stream': https://emptysqua.re/blog/driver-features-for-mongodb-3-6/#change-streams

To use it you need to create a change stream object by the 'watch' query, and for each change, you can do whatever you want...

python solution:

def update_at_by(change):
    update_fields = change["updateDescription"]["updatedFields"].keys()
    print("update_fields: {}".format(update_fields))

    collection = change["ns"]["coll"]
    db = change["ns"]["db"]
    key = change["documentKey"]

    if len(update_fields) == 1 and "update_at" in update_fields:
        pass  # to avoid recursion updates...
    else:
        client[db][collection].update(key, {"$set": {"update_at": datetime.now()}})


client = MongoClient("172.17.0.2")
db = client["Data"]

change_stream = db.watch()

for change in change_stream:
    print(change)
    update_ts_by(change)

Note, to use the change_stream object, your mongodb instance should run as 'replica set'. It can be done also as a 1-node replica set (almost no change then the standalone use):

Run mongo as a replica set: https://docs.mongodb.com/manual/tutorial/convert-standalone-to-replica-set/

Replica set configuration vs Standalone: Mongo DB - difference between standalone & 1-node replica set

You can use $mergeObjects in the aggregation based update. Something like

db.collection.update(
   { _id:...},
   [{"$set":{
      "some_key":{
        "$mergeObjects":[
          "$some_key",
          new info or { param2 : "val2_new", param3 : "val3_new"}
       ]
      }
   }}]
)

More examples here

You can also try this for match string.

DECLARE @temp1 VARCHAR(1000)
    SET @temp1 = '<li>Error in connecting server.</li>'
DECLARE @temp2 VARCHAR(1000)
    SET @temp2 = '<li>Error in connecting server. connection timeout.</li>'

IF @temp1 like '%Error in connecting server.%' OR @temp1 like '%Error in connecting server. connection timeout.%'
  SELECT 'yes'
ELSE
  SELECT 'no'

For versions 6.6+ you need to uncheck "Remember the current session for next launch" on Settings -> Preferences -> Backup.

For older versions you need to uncheck "Remember the current session for next launch" on Settings -> Preferences.

A source release will be compiled on your own machine while a binary release must match your operating system.

source releases are more common on linux systems because linux systems can dramatically vary in cpu, installed library versions, kernelversions and nearly every linux system has a compiler installed.

binary releases are common on ms-windows systems. most windows machines do not have a compiler installed.

Exporting values List to Excel

1. Install in nuget next reference
2. Install-Package Syncfusion.XlsIO.Net.Core -Version 17.2.0.35
3. Install-Package ClosedXML -Version 0.94.2

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using ClosedXML;
using ClosedXML.Excel;
using Syncfusion.XlsIO;

namespace ExporteExcel
{
    class Program
    {
        public class Auto
        {
            public string Marca { get; set; }

            public string Modelo { get; set; }
            public int Ano { get; set; }

            public string Color { get; set; }
            public int Peronsas { get; set; }
            public int Cilindros { get; set; }
        }
        static void Main(string[] args)
        {
            //Lista Estatica
            List<Auto> Auto = new List<Program.Auto>()
            {
                new Auto{Marca = "Chevrolet", Modelo = "Sport", Ano = 2019, Color= "Azul", Cilindros=6, Peronsas= 4 },
                new Auto{Marca = "Chevrolet", Modelo = "Sport", Ano = 2018, Color= "Azul", Cilindros=6, Peronsas= 4 },
                new Auto{Marca = "Chevrolet", Modelo = "Sport", Ano = 2017, Color= "Azul", Cilindros=6, Peronsas= 4 }
            };
            //Inizializar Librerias
            var workbook = new XLWorkbook();
            workbook.AddWorksheet("sheetName");
            var ws = workbook.Worksheet("sheetName");
            //Recorrer el objecto
            int row = 1;
            foreach (var c in Auto)
            {
                //Escribrie en Excel en cada celda
                ws.Cell("A" + row.ToString()).Value = c.Marca;
                ws.Cell("B" + row.ToString()).Value = c.Modelo;
                ws.Cell("C" + row.ToString()).Value = c.Ano;
                ws.Cell("D" + row.ToString()).Value = c.Color;
                ws.Cell("E" + row.ToString()).Value = c.Cilindros;
                ws.Cell("F" + row.ToString()).Value = c.Peronsas;
                row++;

            }
            //Guardar Excel 
            //Ruta = Nombre_Proyecto\bin\Debug
            workbook.SaveAs("Coches.xlsx");
        }
    }
}

If the file is not too big that holding it in memory is a problem:

with open("filename", "rb") as f:
    bytes_read = f.read()
for b in bytes_read:
    process_byte(b)

where process_byte represents some operation you want to perform on the passed-in byte.

If you want to process a chunk at a time:

with open("filename", "rb") as f:
    bytes_read = f.read(CHUNKSIZE)
    while bytes_read:
        for b in bytes_read:
            process_byte(b)
        bytes_read = f.read(CHUNKSIZE)

The with statement is available in Python 2.5 and greater.

To update @iAleksandr answer for Xcode 11, which causes problems due to Scene kit.

1. Replace

let appDelegate = UIApplication.shared.delegate as! AppDelegate
appDelegate.window?.rootViewController = rootViewController

With

guard let windowScene = UIApplication.shared.connectedScenes.first as? UIWindowScene,let sceneDelegate = windowScene.delegate as? SceneDelegate else { return
} sceneDelegate.window?.rootViewController = rootViewController

2. call the Switcher.updateRootViewcontroller in Scene delegate rather than App delegate like this:

func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {

Switcher.updateRootViewController()

guard let _ = (scene as? UIWindowScene) else { return }
}

This theme required awhile to find results and reasons:

using MaiaDB 5.4. via SuSE-LINUX tumblweed

1. some files in the appointed directory havn't been necessary in any direct relation with mariadb. I.e: I placed some hints, a text-file, some bakup-copys somewhere in the same appointed directory for mysql mariadb and this caused endless error-messages and blocking the server from starting. Mariadb appears to be very sensible and hostile with the presence of other files not beeing database files(comments,backups,experimantal files etc) .

2. using libreoffice as client then there already this generated much problems with the creation and working on a database and caused some crashes.The crashes eventually produced bad tables.

3. May be because of that or may be because of the presence of not yet deleted but unusable tables !! the mysql mariadb server crashed and didn't want to do it' job not even start.

Error message always same : "Table 'some.table' doesn't exist in engine"

But when it started then tables appeared as normal, but it was unpossible to work on them.

So what to do without a more precise Error Message ?? The unusable tables showed up with: "CHECK TABLE" or on the command line of the system with "mysqlcheck " So I deleted by filemanager or on the system-level as root or as allowed user all the questionable files and then problem was solved.

Proposal: the Error Message could be a bit more precisely for example: "corrupted tables" (which can be found by CHECK TABLE, but only if the server is running) or by mysqlcheck even whe server is not running - but here are other disturbing files like hints/bakups a.s.o not visible.

ANYWAY it helped a lot to have backup-copies of the original database-files on a backup volume. This helped to check out and test it again and again until solution was found.

Good luck all - Herbert

<script>
<?php
if($_POST) { // Check to make sure params have been sent via POST
  foreach($_POST as $field => $value) { // Go through each POST param and output as JavaScript variable
    $val = json_encode($value); // Escape value
    $vars .= "var $field = $val;\n";
  }
  echo "<script>\n$vars</script>\n";
}
?>
</script>

Or use it to put them in an dictionary that a function could retrieve:

<script>
<?php
if($_POST) {
  $vars = array();
  foreach($_POST as $field => $value) {
    array_push($vars,"$field:".json_encode($value)); // Push to $vars array so we can just implode() it, escape value
  }
  echo "<script>var post = {".implode(", ",$vars)."}</script>\n"; // Implode array, javascript will interpret as dictionary
}
?>
</script>

Then in JavaScript:

var myText = post['text'];

// Or use a function instead if you want to do stuff to it first
function Post(variable) {
  // do stuff to variable before returning...
  var thisVar = post[variable];
  return thisVar;
}

This is just an example and shouldn't be used for any sensitive data like a password, etc. The POST method exists for a reason; to send data securely to the backend, so that would defeat the purpose.

But if you just need a bunch of non-sensitive form data to go to your next page without /page?blah=value&bleh=value&blahbleh=value in your url, this would make for a cleaner url and your JavaScript can immediately interact with your POST data.

A simpler library-less version

Aw, heck -- I'll toss in a simple library-less version. Feel free to improve on it[*]:

def frange(start=0, stop=1, jump=0.1):
    nsteps = int((stop-start)/jump)
    dy = stop-start
    # f(i) goes from start to stop as i goes from 0 to nsteps
    return [start + float(i)*dy/nsteps for i in range(nsteps)]

The core idea is that nsteps is the number of steps to get you from start to stop and range(nsteps) always emits integers so there's no loss of accuracy. The final step is to map [0..nsteps] linearly onto [start..stop].

edit

If, like alancalvitti you'd like the series to have exact rational representation, you can always use Fractions:

from fractions import Fraction

def rrange(start=0, stop=1, jump=0.1):
    nsteps = int((stop-start)/jump)
    return [Fraction(i, nsteps) for i in range(nsteps)]

[*] In particular, frange() returns a list, not a generator. But it sufficed for my needs.

Try this:

If [ $a -lt 4 ] || [ $a -gt 64 ] ; then \n
     Something something \n
elif [ $a -gt 4 ] || [ $a -lt 64 ] ; then \n
     Something something \n
else \n
    Yes it works for me :) \n

Building on @SotiriosDelimanolis's comment, here is a method to deal with URLs (such as file:...) and non-URLs (such as C:...), using Spring's FileSystemResource:

public FileSystemResource get(String file) {
    try {
        // First try to resolve as URL (file:...)
        Path path = Paths.get(new URL(file).toURI());
        FileSystemResource resource = new FileSystemResource(path.toFile());
        return resource;
    } catch (URISyntaxException | MalformedURLException e) {
        // If given file string isn't an URL, fall back to using a normal file 
        return new FileSystemResource(file);
    }
}

You could also check out the "Data Scripter Add-In" for SQL Server Management Studio 2008 from:

http://www.mssql-vehicle-data.com/SSMS

Their features list:

• It was developed on SSMS 2008 and is not supported on the 2005 version at this time (soon!)

• Export data quickly to T-SQL for MSSQL and MySQL syntax

• CSV, TXT, XML are also supported! Harness the full potential, power, and speed that SQL has to offer.

• Don't wait for Access or Excel to do scripting work for you that could take several minutes to do -- let SQL Server do it for you and take all the guess work out of exporting your data!

• Customize your data output for rapid backups, DDL manipulation, and more...

• Change table names and database schemas to your needs, quickly and efficiently

• Export column names or simply generate data without the names.

• You can chose individual columns to script.

• You can chose sub-sets of data (WHERE clause).

• You can chose ordering of data (ORDER BY clause).

• Great backup utility for those grungy database debugging operations that require data manipulation. Don't lose data while experimenting. Manipulate data on the fly!

Webkit browsers (such as Chrome, Safari and Opera) supports the non-standard ::-webkit-scrollbar pseudo element, which allows us to modify the look of the browser's scrollbar.

Note: The ::-webkit-scrollbar is not supported by Firefox or IE and Edge.

* {_x000D_
  box-sizing: border-box;_x000D_
  font-family: sans-serif;_x000D_
}_x000D_
_x000D_
div {_x000D_
  width: 15rem;_x000D_
  height: 8rem;_x000D_
  padding: .5rem;_x000D_
  border: 1px solid #aaa;_x000D_
  margin-bottom: 1rem;_x000D_
  overflow: auto;_x000D_
}_x000D_
_x000D_
.box::-webkit-scrollbar {_x000D_
  width: .8em;_x000D_
}_x000D_
_x000D_
.box::-webkit-scrollbar-track {_x000D_
  box-shadow: inset 0 0 6px rgba(0, 0, 0, .3);_x000D_
}_x000D_
 _x000D_
.box::-webkit-scrollbar-thumb {_x000D_
  background-color: dodgerblue;_x000D_
}

<div class="box">_x000D_
  <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate</p>_x000D_
  <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate</p>_x000D_
  <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate</p>_x000D_
</div>_x000D_
_x000D_
<div>_x000D_
  <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate</p>_x000D_
  <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate</p>_x000D_
  <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate</p>_x000D_
</div>

Reference: How To Create a Custom Scrollbar

A virtual function makes its class a polymorphic base class. Derived classes can override virtual functions. Virtual functions called through base class pointers/references will be resolved at run-time. That is, the dynamic type of the object is used instead of its static type:

 Derived d;
 Base& rb = d;
 // if Base::f() is virtual and Derived overrides it, Derived::f() will be called
 rb.f();  

A pure virtual function is a virtual function whose declaration ends in =0:

class Base {
  // ...
  virtual void f() = 0;
  // ...

A pure virtual function implicitly makes the class it is defined for abstract (unlike in Java where you have a keyword to explicitly declare the class abstract). Abstract classes cannot be instantiated. Derived classes need to override/implement all inherited pure virtual functions. If they do not, they too will become abstract.

An interesting 'feature' of C++ is that a class can define a pure virtual function that has an implementation. (What that's good for is debatable.)

Note that C++11 brought a new use for the delete and default keywords which looks similar to the syntax of pure virtual functions:

my_class(my_class const &) = delete;
my_class& operator=(const my_class&) = default;

See this question and this one for more info on this use of delete and default.

df.loc[:,'col':] = df.loc[:,'col':].apply(pd.to_numeric, errors = 'coerce')

From the previous response's links, the one that did it for me, running ksh on Solaris, was this:

sed '1,/firstmatch/d;/secondmatch/,$d'

• 1,/firstmatch/d: from line 1 until the first time you find firstmatch, delete.
• /secondmatch/,$d: from the first occurrance of secondmatch until the end of file, delete.
• Semicolon separates the two commands, which are executed in sequence.

It's interesting things with IDE (IntelliJ in this case):

• if you leave default, i.e. don't declare spring-boot-starter-tomcat as provided, a spring-boot-maven-plugin (SBMP) put tomcat's jars to your war -> and you'll probably get errors deploying this war to container (there could be a versions conflict)

• else you'll get classpath with no compile dependency on tomcat-embed (SBMP will build executable war/jar with provided deps included anyway)

• • intelliJ honestly doesn't see provided deps at runtime (they are not in classpath) when you run its Spring Boot run configuration.
• • and with no tomcat-embed you can't run Spring-Boot with embedded servlet container.

There is some tricky workaround: put Tomcat's jars to classpath of your idea-module via UI: File->Project Structure->(Libraries or Modules/Dependencies tab) .

• tomcat-embed-core
• tomcat-embed-el
• tomcat-embed-websocket
• tomcat-embed-logging-juli

Better solution for maven case

Instead of adding module dependencies in Idea, it is better to declare maven profile with compile scope of spring-boot-starter-tomcat library.

<profiles>
    <profile>
        <id>embed-tomcat</id>
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-tomcat</artifactId>
                <scope>compile</scope>
            </dependency>
        </dependencies>
    </profile>
</profiles>

while spring-boot-starter-tomcat was declared provided in <dependencies/>, making this profile active in IDE or CLI (mvn -Pembed-tomcat ...) allow you to launch build with embedded tomcat.

Actually, there is a way. You just need to copy DeviceSupport folder for iOS 7.1 from Older Xcode to the new one. It's located in:

/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport/7.1

If you don't have the 7.1 files anymore, you can download a previous version of XCode on https://developer.apple.com/download/more/, extract it, and then copy these files to following path

/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport/

Credit

Unlike in Python 2, the zip function in Python 3 returns an iterator. Iterators can only be exhausted (by something like making a list out of them) once. The purpose of this is to save memory by only generating the elements of the iterator as you need them, rather than putting it all into memory at once. If you want to reuse your zipped object, just create a list out of it as you do in your second example, and then duplicate the list by something like

 test2 = list(zip(lis1,lis2))
 zipped_list = test2[:]
 zipped_list_2 = list(test2)

I had the same error when I imported web requests from fiddler captured sessions to Visual Studio webtests. Some POST requests did not have a StringHttpBody tag. I added an empty one to them and the error was gone. Add this after the Headers tag:

    <StringHttpBody ContentType="" InsertByteOrderMark="False">
  </StringHttpBody>

If you add double paranthesis to the ngModel reference you get a two-way binding to your model property. That property can then be read and used in the event handler. In my view that is the most clean approach.

<input type="checkbox" [(ngModel)]="myModel.property" (ngModelChange)="processChange()" />

If you don't want to lose the columns you shift past the end of your dataframe, simply append the required number first:

    offset = 5
    DF = DF.append([np.nan for x in range(offset)])
    DF = DF.shift(periods=offset)
    DF = DF.reset_index() #Only works if sequential index

Surprisingly, none of answers talk about how it is achieved by hibernate behind the screens.

Lazy loading is a design pattern that is effectively used in hibernate for performance reasons which involves following techniques.

1. Byte code instrumentation:

Enhances the base class definition with hibernate hooks to intercept all the calls to that entity object.

Done either at compile time or run[load] time

1.1 Compile time

• Post compile time operation

• Mostly by maven/ant plugins

1.2 Run time

• If no compile time instrumentation is done, this is created at run time Using libraries like javassist

2. Proxies

The entity object that Hibernate returns are proxy of the real type.

See also: Javassist. What is the main idea and where real use?

REPEAT
    ...
UNTIL cond

Is equivalent to

while True:
    ...
    if cond:
        break

Swift 5. To see IF A DATE HAS PASSED:

let expiryDate = "2020-01-10" // Jan 10 2020

let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd"

if Date() < dateFormatter.date(from: expiryDate) ?? Date() {
    print("Not Yet expiryDate")
} else {
    print("expiryDate has passed")
}

I ran into this error in some code where someone was calling exit() in one thread about the same time as main() returned, so all the global/static constructors were being kicked off in two separate threads simultaneously.

This error also manifests as double free or corruption, or a segfault/sig11 inside exit() or inside malloc_consolidate, and likely others. The call stack for the malloc_consolidate crash may resemble:

#0  0xabcdabcd in malloc_consolidate () from /lib/libc.so.6
#1  0xabcdabcd in _int_free () from /lib/libc.so.6
#2  0xabcdabcd in operator delete (...)
#3  0xabcdabcd in operator delete[] (...)
(...)

I couldn't get it to exhibit this problem while running under valgrind.

Just adding a little more info.

JPA manages the version under the hood for you, however it doesn't do so when you update your record via JPAUpdateClause, in such cases you need to manually add the version increment to the query.

Same can be said about updating via JPQL, i.e. not a simple change to the entity, but an update command to the database even if that is done by hibernate

Pedro

In my case [Win64, Python 2.7, cygwin] the issue was with a missing gcc.

Using apt-cyg install gcc-core enabled me to then use pip2 wheel ... to install my wheels automatically.

All the other answers have two main flaws:

1. They do a Python loop through the string, which is horrifically slow, or
2. They use numpy which is a pretty big additional dependency.

def findall(haystack, needle):
    idx = -1
    while True:
        idx = haystack.find(needle, idx+1)
        if idx == -1:
            break
        yield idx

This iterates through haystack looking for needle, always starting at where the previous iteration ended. It uses the builtin str.find which is much faster than iterating through haystack character-by-character. It doesn't require any new imports.

Very simple, first turn your object into a json object, this will return a string of your object into a JSON representative.

Take that result and decode with an extra parameter of true, where it will convert to associative array

$array = json_decode(json_encode($oObject),true);

NPM is a package manager, you can install node.js packages using NPM

NPX is a tool to execute node.js packages.

It doesn't matter whether you installed that package globally or locally. NPX will temporarily install it and run it. NPM also can run packages if you configure a package.json file and include it in the script section.

So remember this, if you want to check/run a node package quickly without installing locally or globally use NPX.

npM - Manager

npX - Execute - easy to remember

If you're using Auto Layout, I assume you've set the Bottom Space to Superview constraint. If that's the case, you simply have to update the constraint's value. Here's how you do it with a little bit of animation.

func keyboardWasShown(notification: NSNotification) {
    let info = notification.userInfo!
    let keyboardFrame: CGRect = (info[UIKeyboardFrameEndUserInfoKey] as! NSValue).CGRectValue()

    UIView.animateWithDuration(0.1, animations: { () -> Void in
        self.bottomConstraint.constant = keyboardFrame.size.height + 20
    })
}

The hardcoded 20 is added only to pop the textfield above the keyboard just a bit. Otherwise the keyboard's top margin and textfield's bottom margin would be touching.

When the keyboard is dismissed, reset the constraint's value to its original one.

To replace all spaces :

UPDATE `table` SET `col_name` = REPLACE(`col_name`, ' ', '')

To remove all tabs characters :

UPDATE `table` SET `col_name` = REPLACE(`col_name`, '\t', '' )

To remove all new line characters :

UPDATE `table` SET `col_name` = REPLACE(`col_name`, '\n', '')

http://dev.mysql.com/doc/refman/5.0/en/string-functions.html#function_replace

To remove first and last space(s) of column :

UPDATE `table` SET `col_name` = TRIM(`col_name`)

http://dev.mysql.com/doc/refman/5.0/en/string-functions.html#function_trim

var arr = [];
while(mynumber--) {
    arr[mynumber] = String(mynumber+1);
}

I'll explain it in a simple way.

Generics defined at Class level are completely separate from the generics defined at the (static) method level.

class Greet<T> {

    public static <T> void sayHello(T obj) {
        System.out.println("Hello " + obj);
    }
}

When you see the above code anywhere, please note that the T defined at the class level has nothing to do with the T defined in the static method. The following code is also completely valid and equivalent to the above code.

class Greet<T> {

    public static <E> void sayHello(E obj) {
        System.out.println("Hello " + obj);
    }
}

Why the static method needs to have its own generics separate from those of the Class?

This is because, the static method can be called without even instantiating the Class. So if the Class is not yet instantiated, we do not yet know what is T. This is the reason why the static methods needs to have its own generics.

So, whenever you are calling the static method,

Greet.sayHello("Bob");
Greet.sayHello(123);

JVM interprets it as the following.

Greet.<String>sayHello("Bob");
Greet.<Integer>sayHello(123);

Both giving the same outputs.

Hello Bob
Hello 123

I am not sure whether I understood your intentions correctly, but let's see if this one helps.

public class TypedProperty<T> : Property where T : IConvertible
{
    public T TypedValue
    {
        get { return (T)Convert.ChangeType(base.Value, typeof(T)); }
        set { base.Value = value.ToString();}
    }
}

You are binding the click event to anchors with an href attribute with value sign_new.

Either bind anchors with class sign_new or bind anchors with href value #sign_up. I would prefer the former.

I would do the following.

Set the zero to NA.

 data[data==0] <- NA
 data

Delete the rows associated with NA.

 data2<-data[complete.cases(data),]

Another worked solution for me. serever->security->logins->new logins->General->create your user name as login name,Click sql server authentication add passwords

uncheck the password verification three checkboxes . This will work.

Remeber to change the server properties ->Security from Server authentication to SQL Server and Windows Authentication mode

It really depends on the IE versions ... I found this excellent resource that is up to date from IE6-10:

CSS hack for Internet Explorer 6

It is called the Star HTML Hack and looks as follows:

• html .color {color: #F00;} This hack uses fully valid CSS.

CSS hack for Internet Explorer 7

It is called the Star Plus Hack.

*:first-child+html .color {color: #F00;} Or a shorter version:

*+html .color {color: #F00;} Like the star HTML hack, this uses valid CSS.

CSS hack for Internet Explorer 8

@media \0screen { .color {color: #F00;} } This hacks does not use valid CSS.

CSS hack for Internet Explorer 9

:root .color {color: #F00\9;} This hacks also does not use valid CSS.

Added 2013.02.04: Unfortunately IE10 understands this hack.

CSS hack for Internet Explorer 10

@media screen and (-ms-high-contrast: active), (-ms-high-contrast: none) { .color {color: #F00;} } This hacks also does not use valid CSS.

cout.fill('*');
cout << -12345 << endl; // print default value with no field width
cout << setw(10) << -12345 << endl; // print default with field width
cout << setw(10) << left << -12345 << endl; // print left justified
cout << setw(10) << right << -12345 << endl; // print right justified
cout << setw(10) << internal << -12345 << endl; // print internally justified

This produces the output:

-12345
****-12345
-12345****
****-12345
-****12345

This could help:

public static String getCorporateID(String fileName) {

    String corporateId = null;

    try {
        corporateId = fileName.substring(0, fileName.indexOf("_"));
        // System.out.println(new Date() + ": " + "Corporate:
        // "+corporateId);
        return corporateId;
    } catch (Exception e) {
        corporateId = null;
        e.printStackTrace();
    }

    return corporateId;
}

If you do this for testing you could use Quickcheck (this is a Java port I've been working on).

import static net.java.quickcheck.generator.PrimitiveGeneratorSamples.*;

TimeUnit anyEnumValue = anyEnumValue(TimeUnit.class); //one value

It supports all primitive types, type composition, collections, different distribution functions, bounds etc. It has support for runners executing multiple values:

import static net.java.quickcheck.generator.PrimitiveGeneratorsIterables.*;

for(TimeUnit timeUnit : someEnumValues(TimeUnit.class)){
    //..test multiple values
}

The advantage of Quickcheck is that you can define tests based on a specification where plain TDD works with scenarios.

(function(){ _x000D_
      let a = function(){console.log(this.b)};_x000D_
      a.prototype.b = 1;_x000D_
      a.__proto__.b = 2;_x000D_
      let q = new a();_x000D_
      console.log(a.b);_x000D_
      console.log(q.b) _x000D_
    })()

Try this code to understand

Follow the steps:

1. npm install --save-dev nodemon

2. Add the following two lines to "script" section of package.json:

"start": "node ./bin/www",
"devstart": "nodemon ./bin/www"

as shown below:

"scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "start": "node ./bin/www",
    "devstart": "nodemon ./bin/www"
}

3. npm run devstart

https://developer.mozilla.org/en-US/docs/Learn/Server-side/Express_Nodejs/skeleton_website

Make sure you have removed unavailable libraries (jar files) from build path

I strongly favour minimal file headers, by which I mean just:

• The hashbang (#! line) if this is an executable script
• Module docstring
• Imports, grouped in the standard way, eg:

  import os    # standard library
  import sys

  import requests  # 3rd party packages

  from mypackage import (  # local source
      mymodule,
      myothermodule,
  )

ie. three groups of imports, with a single blank line between them. Within each group, imports are sorted. The final group, imports from local source, can either be absolute imports as shown, or explicit relative imports.

Everything else is a waste of time, visual space, and is actively misleading.

If you have legal disclaimers or licencing info, it goes into a separate file. It does not need to infect every source code file. Your copyright should be part of this. People should be able to find it in your LICENSE file, not random source code.

Metadata such as authorship and dates is already maintained by your source control. There is no need to add a less-detailed, erroneous, and out-of-date version of the same info in the file itself.

I don't believe there is any other data that everyone needs to put into all their source files. You may have some particular requirement to do so, but such things apply, by definition, only to you. They have no place in “general headers recommended for everyone”.

What you describe is the correct way to handle this.

You said that you want to stay in the GUI. You can usually set the execute bit through the file properties menu. You could also learn how to create a custom action for the context menu to do this for you if you're so inclined. This depends on your desktop environment of course.

If you use a more advanced editor, you can script the action to happen when the file is saved. For example (I'm only really familiar with vim), you could add this to your .vimrc to make any new file that starts with "#!/*/bin/*" executable.

au BufWritePost * if getline(1) =~ "^#!" | if getline(1) =~ "/bin/" | silent !chmod +x <afile> | endif | endif

Yes this is correct, you can't have variables in views (there are other restrictions too).

Views can be used for cases where the result can be replaced with a select statement.

grep $PATTERN * would be sufficient. By default, grep would skip all subdirectories. However, if you want to grep through them, grep -r $PATTERN * is the case.

even I faced the same issue. I rectified it by going to the particular client under the realm respectively therein redirect URL add * after your complete URL.

THE PROBLEM WILL BE SOLVED

Example: redirect URI: http:localhost:3000/myapp/generator/*

My approach: use a div instead of a pop-up window.

See it working in the jsfiddle here: http://jsfiddle.net/6RE7w/2/

Or save the code below as test.html and try it locally.

<html>

<head>
    <script type="text/javascript" src="http://code.jquery.com/jquery.min.js"></script>
    <script type="text/javascript">
        $(window).load(function(){
            $('.btnChoice').on('click', function(){
                $('#divChoices').show()
                thefield = $(this).prev()
                $('.btnselect').on('click', function(){
                    theselected = $(this).prev()
                    thefield.val( theselected.val() )
                    $('#divChoices').hide()
                })
            })

            $('#divChoices').css({
                'border':'2px solid red',
                'position':'fixed',
                'top':'100',
                'left':'200',
                'display':'none'
            })
        });
    </script>
</head>

<body>

<div class="divform">
    <input type="checkbox" name="kvi1" id="kvi1" value="1">
    <label>Field 1: </label>
    <input size="10" type="number" id="sku1" name="sku1">
    <button id="choice1" class="btnChoice">?</button>
    <br>
    <input type="checkbox" name="kvi2" id="kvi2" value="2">
    <label>Field 2: </label>
    <input size="10"  type="number" id="sku2" name="sku2">
    <button id="choice2" class="btnChoice">?</button>
</div>

<div id="divChoices">
    Select something: 
    <br>
    <input size="10" type="number" id="ch1" name="ch1" value="11">
    <button id="btnsel1" class="btnselect">Select</button>
    <label for="ch1">bla bla bla</label>
    <br>
    <input size="10" type="number" id="ch2" name="ch2" value="22">
    <button id="btnsel2" class="btnselect">Select</button>
    <label for="ch2">ble ble ble</label>
</div>

</body>

</html>

clean and simple.

Your code looks correct. Try logging in through your browser and if you are able to access your account come back and try your code again. Just make sure that you have typed your username and password correct

EDIT: Google blocks sign-in attempts from apps which do not use modern security standards (mentioned on their support page). You can however, turn on/off this safety feature by going to the link below:

Go to this link and select Turn On
https://www.google.com/settings/security/lesssecureapps

please try to make it as a character

string str = "Tigger";
//then str[0] will return 'T' not "T"

Create your partial view something like:

@model YourModelType
<div>
  <!-- HTML to render your object -->
</div>

Then in your view use:

@Html.Partial("YourPartialViewName", Model)

If you do not want a strongly typed partial view remove the @model YourModelType from the top of the partial view and it will default to a dynamic type.

Update

The default view engine will search for partial views in the same folder as the view calling the partial and then in the ~/Views/Shared folder. If your partial is located in a different folder then you need to use the full path. Note the use of ~/ in the path below.

@Html.Partial("~/Views/Partials/SeachResult.cshtml", Model)

Just use the table name:

SELECT myTable.*, otherTable.foo, otherTable.bar...

That would select all columns from myTable and columns foo and bar from otherTable.

By default git uses uses less as pager. I normally prefer more, as it will print the first page and then allow you to scroll through the content.

Further, the content will remain in the console when done. This is usually convenient, as you often want to do something with the content after lookup (eg. email the commiter and tell him he introduced a bug in his last commit).

If you then want to pipe content, it would be inconvenient to scroll to print everything. The good thing with more is you will be able to combine it with pipeline and it will pipe through everything, eg.

# Find the commit abcdef123 in the full commit history and read author and commit message
git log |grep -C 5 'abcdef123'

Basically more is all you would ever need, unless you do not want the content to remain in the console when done. To use more instead, do as below.

git config --global core.pager 'more'

Keeping it simple, I personally like string concatenation:

print("Total score for " + name + " is " + score)

It works with both Python 2.7 an 3.X.

NOTE: If score is an int, then, you should convert it to str:

print("Total score for " + name + " is " + str(score))

getTimeZoneOffset() and toLocaleString are good for basic date work, but if you need real timezone support, look at mde's TimeZone.js.

There's a few more options discussed in the answer to this question

On your machine* run 'Set-Item WSMan:\localhost\Client\TrustedHosts -Value "$ipaddress"

*Machine from where you are running PSSession

Just wrote before for the same reason (works with any amount of arrays):

/**
 * Returns with the union of the given arrays.
 *
 * @param Any amount of arrays to be united.
 * @returns {array} The union array.
 */
function uniteArrays()
{
    var union = [];
    for (var argumentIndex = 0; argumentIndex < arguments.length; argumentIndex++)
    {
        eachArgument = arguments[argumentIndex];
        if (typeof eachArgument !== 'array')
        {
            eachArray = eachArgument;
            for (var index = 0; index < eachArray.length; index++)
            {
                eachValue = eachArray[index];
                if (arrayHasValue(union, eachValue) == false)
                union.push(eachValue);
            }
        }
    }

    return union;
}    

function arrayHasValue(array, value)
{ return array.indexOf(value) != -1; }

Rebase and Cherry-pick is the only way you can keep clean commit history. Avoid using merge and avoid creating merge conflict. If you are using gerrit set one project to Merge if necessary and one project to cherry-pick mode and try yourself.

Another interesing way is to use $redact, which is one of the new aggregation features of MongoDB 2.6. If you are using 2.6, you don't need an $unwind which might cause you performance problems if you have large arrays.

db.test.aggregate([
    { $match: { 
         shapes: { $elemMatch: {color: "red"} } 
    }},
    { $redact : {
         $cond: {
             if: { $or : [{ $eq: ["$color","red"] }, { $not : "$color" }]},
             then: "$$DESCEND",
             else: "$$PRUNE"
         }
    }}]);

$redact "restricts the contents of the documents based on information stored in the documents themselves". So it will run only inside of the document. It basically scans your document top to the bottom, and checks if it matches with your if condition which is in $cond, if there is match it will either keep the content($$DESCEND) or remove($$PRUNE).

In the example above, first $match returns the whole shapes array, and $redact strips it down to the expected result.

Note that {$not:"$color"} is necessary, because it will scan the top document as well, and if $redact does not find a color field on the top level this will return false that might strip the whole document which we don't want.

I wonder why no one was able to get what the question actually asked. It stated What is the command within the SQLite shell tool to specify a database file?

A sqlite db is on my hard disk E:\ABCD\efg\mydb.db. How do I access it with sqlite3 command line interface? .open E:\ABCD\efg\mydb.db does not work. This is what question asked.

I found the best way to do the work is

• copy-paste all your db files in 1 directory (say E:\ABCD\efg\mydbs)
• switch to that directory in your command line
• now open sqlite3 and then .open mydb.db

This way you can do the join operation on different tables belonging to different databases as well.

With ES6 you could to access class methods by name:

class X {
  method1(){
    console.log("1");
  }
  method2(){
    this['method1']();
    console.log("2");
  }
}
let x  = new X();
x['method2']();

the output would be:

1
2

In the end after trying many of these complicated solutions as I only needed to save/restore a single value in my Fragment (the content of an EditText), and although it might not be the most elegant solution, creating a SharedPreference and storing my state there worked for me

Iterate through the array, and splice out the ones you don't want. For easier use, iterate backwards so you don't have to take into account the live nature of the array:

for (var i = myArray.length - 1; i >= 0; --i) {
    if (myArray[i].field == "money") {
        myArray.splice(i,1);
    }
}

By default browser always plays animated gifs, and you can't change that behaviour. If gif image does not animate there can be 2 ways to look: something wrong with the browser, something wrong with the image. Then to exclude the first variant just check trusted image in your browser (run snippet below, this gif definitely animated and works in all browsers).

Your code looks OK. Can you check if this snippet is animated for you?
If YES, then something is bad with your gif, if NO something is wrong with your browser.

<img src="http://i.stack.imgur.com/SBv4T.gif" alt="this slowpoke moves"  width=250/>

You can use this class : class="sticky-top alert alert-dismissible"

{
  "number" : ["1","2","3"],
  "alphabet" : ["a", "b", "c"]
}

Use the below code:

import base64

#Taking input through the terminal.
welcomeInput= raw_input("Enter 1 to convert String to Base64, 2 to convert Base64 to String: ") 

if(int(welcomeInput)==1 or int(welcomeInput)==2):
    #Code to Convert String to Base 64.
    if int(welcomeInput)==1:
        inputString= raw_input("Enter the String to be converted to Base64:") 
        base64Value = base64.b64encode(inputString.encode())
        print "Base64 Value = " + base64Value
    #Code to Convert Base 64 to String.
    elif int(welcomeInput)==2:
        inputString= raw_input("Enter the Base64 value to be converted to String:") 
        stringValue = base64.b64decode(inputString).decode('utf-8')
        print "Base64 Value = " + stringValue

else:
    print "Please enter a valid value."

Things to ponder:

1. Use jquery
2. Which this is your code refering to
3. Isnt getElementById usually document.getElementById?
4. If the image is not found, are you sure your browser would tell you?

Rails3 Code with fully localized messages:

In the model user.rb define the validation

validates :email, :presence => true

In config/locales/en.yml

en:  
  activerecord:
    models: 
      user: "Customer"
    attributes:
      user:
        email: "Email address"
    errors:
      models:
        user:
          attributes:
            email:
              blank: "cannot be empty"

As of right now, I do not know of any. It appears the code academy folks have set their sites on Ruby on Rails. They do not rule Java out of the picture however.

Basically, Python lists are very flexible and can hold completely heterogeneous, arbitrary data, and they can be appended to very efficiently, in amortized constant time. If you need to shrink and grow your list time-efficiently and without hassle, they are the way to go. But they use a lot more space than C arrays, in part because each item in the list requires the construction of an individual Python object, even for data that could be represented with simple C types (e.g. float or uint64_t).

The array.array type, on the other hand, is just a thin wrapper on C arrays. It can hold only homogeneous data (that is to say, all of the same type) and so it uses only sizeof(one object) * length bytes of memory. Mostly, you should use it when you need to expose a C array to an extension or a system call (for example, ioctl or fctnl).

array.array is also a reasonable way to represent a mutable string in Python 2.x (array('B', bytes)). However, Python 2.6+ and 3.x offer a mutable byte string as bytearray.

However, if you want to do math on a homogeneous array of numeric data, then you're much better off using NumPy, which can automatically vectorize operations on complex multi-dimensional arrays.

To make a long story short: array.array is useful when you need a homogeneous C array of data for reasons other than doing math.

why has no answer I've seen mentioned anything about the unwrap method? Or, even easier, the get_text method

http://www.crummy.com/software/BeautifulSoup/bs4/doc/#unwrap http://www.crummy.com/software/BeautifulSoup/bs4/doc/#get-text

PHP's string length is limited by the way strings are represented in PHP; memory does not have anything to do with it.

According to phpinternalsbook.com, strings are stored in struct { char *val; int len; } and since the maximum size of an int in C is 4 bytes, this effectively limits the maximum string size to 2GB.

Vanilla Javascript solution

HTML

<div id="mydiv" data-myval="10"></div>

JavaScript:

• Using DOM's getAttribute() property

   var brand = mydiv.getAttribute("data-myval")//returns "10"
   mydiv.setAttribute("data-myval", "20")      //changes "data-myval" to "20"
   mydiv.removeAttribute("data-myval")         //removes "data-myval" attribute entirely
  

• Using JavaScript's dataset property

  var myval = mydiv.dataset.myval     //returns "10"
  mydiv.dataset.myval = '20'          //changes "data-myval" to "20"
  mydiv.dataset.myval = null          //removes "data-myval" attribute
  

Well the data src attribute is just used for binding data for example ASP.NET ...

W3School src attribute

MSDN datasrc attribute

• ECB should not be used if encrypting more than one block of data with the same key.

• CBC, OFB and CFB are similar, however OFB/CFB is better because you only need encryption and not decryption, which can save code space.

• CTR is used if you want good parallelization (ie. speed), instead of CBC/OFB/CFB.

• XTS mode is the most common if you are encoding a random accessible data (like a hard disk or RAM).

• OCB is by far the best mode, as it allows encryption and authentication in a single pass. However there are patents on it in USA.

The only thing you really have to know is that ECB is not to be used unless you are only encrypting 1 block. XTS should be used if you are encrypting randomly accessed data and not a stream.

• You should ALWAYS use unique IV's every time you encrypt, and they should be random. If you cannot guarantee they are random, use OCB as it only requires a nonce, not an IV, and there is a distinct difference. A nonce does not drop security if people can guess the next one, an IV can cause this problem.

Try each_with_index.

The simplest way : grep -Ril "Your text" /

I figured out a way to telnet to a server and change a file permission. Then FTP the file back to your computer and open it. Hopefully this will answer your questions and also help FTP.

The filepath variable is setup so you always login and cd to the same directory. You can change it to a prompt so the user can enter it manually.

:: This will telnet to the server, change the permissions, 
:: download the file, and then open it from your PC. 

:: Add your username, password, servername, and file path to the file.
:: I have not tested the server name with an IP address.

:: Note - telnetcmd.dat and ftpcmd.dat are temp files used to hold commands

@echo off
SET username=
SET password=
SET servername=
SET filepath=

set /p id="Enter the file name: " %=%

echo user %username%> telnetcmd.dat
echo %password%>> telnetcmd.dat
echo cd %filepath%>> telnetcmd.dat
echo SITE chmod 777 %id%>> telnetcmd.dat
echo exit>> telnetcmd.dat
telnet %servername% < telnetcmd.dat


echo user %username%> ftpcmd.dat
echo %password%>> ftpcmd.dat
echo cd %filepath%>> ftpcmd.dat
echo get %id%>> ftpcmd.dat
echo quit>> ftpcmd.dat

ftp -n -s:ftpcmd.dat %servername%
del ftpcmd.dat
del telnetcmd.dat

The easiest thing is probably to provide the color when you create the plot :

fig1 = plt.figure(facecolor=(1, 1, 1))

or

fig1, (ax1, ax2) = plt.subplots(nrows=1, ncols=2, facecolor=(1, 1, 1))

this is the solution that works for me...wrote it in another question as well: How to change shape color dynamically?

//get the image button by id
ImageButton myImg = (ImageButton) findViewById(R.id.some_id);

//get drawable from image button
GradientDrawable drawable = (GradientDrawable) myImg.getDrawable();

//set color as integer
//can use Color.parseColor(color) if color is a string
drawable.setColor(color)

I realize this question was asked and answered a long time ago, but the answers don't give what I feel is the simplest solution. It's almost always a good idea to avoid loops whenever possible, and matplotlib's plot is capable of plotting multiple lines with one command. If x and y are arrays, then plot draws one line for every column.

In your case, you can do the following:

x=np.array([-1 ,0.5 ,1,-0.5])
xx = np.vstack([x[[0,2]],x[[1,3]]])
y=np.array([ 0.5,  1, -0.5, -1])
yy = np.vstack([y[[0,2]],y[[1,3]]])
plt.plot(xx,yy, '-o')

Have a long list of x's and y's, and want to connect adjacent pairs?

xx = np.vstack([x[0::2],x[1::2]])
yy = np.vstack([y[0::2],y[1::2]])

Want a specified (different) color for the dots and the lines?

plt.plot(xx,yy, '-ok', mfc='C1', mec='C1')

You might have set oracle not to start automatically. Goto Start and search for Services. Scroll down and look for OracleServiceORCL (or OracleServiceSID). Double click and change startup type to automatic if it is set as manual.

You can use res.send('OMG :(', 404); just res.send(404);

honoring font family, dynamic font I've concocted this abomination:

extension NSAttributedString
{
    convenience fileprivate init?(html: String, font: UIFont? = Font.dynamic(style: .subheadline))
    {
        guard let data = html.data(using: String.Encoding.utf8, allowLossyConversion: true) else {
        var totalString = html
        /*
         https://stackoverflow.com/questions/32660748/how-to-use-apples-new-san-francisco-font-on-a-webpage
            .AppleSystemUIFont I get in font.familyName does not work
         while -apple-system does:
         */
        var ffamily = "-apple-system"
        if let font = font {
            let lLDBsucks = font.familyName
            if !lLDBsucks.hasPrefix(".appleSystem") {
                ffamily = font.familyName
            }
            totalString = "<style>\nhtml * {font-family: \(ffamily) !important;}\n            </style>\n" + html
        }
        guard let data = totalString.data(using: String.Encoding.utf8, allowLossyConversion: true) else {
            return nil
        }
        assert(Thread.isMainThread)
        guard let attributedText = try?  NSAttributedString(data: data, options: [.documentType: NSAttributedString.DocumentType.html, .characterEncoding: String.Encoding.utf8.rawValue], documentAttributes: nil) else {
            return nil
        }
        let mutable = NSMutableAttributedString(attributedString: attributedText)
        if let font = font {
        do {
            var found = false
            mutable.beginEditing()
            mutable.enumerateAttribute(NSAttributedString.Key.font, in: NSMakeRange(0, attributedText.length), options: NSAttributedString.EnumerationOptions(rawValue: 0)) { (value, range, stop) in
                    if let oldFont = value as? UIFont {
                        let newsize = oldFont.pointSize * 15 * Font.scaleHeruistic / 12
                        let newFont = oldFont.withSize(newsize)
                        mutable.addAttribute(NSAttributedString.Key.font, value: newFont, range: range)
                        found = true
                    }
                }
                if !found {
                    // No font was found - do something else?
                }

            mutable.endEditing()
            
//            mutable.addAttribute(.font, value: font, range: NSRange(location: 0, length: mutable.length))
        }
        self.init(attributedString: mutable)
    }

}

alternatively you can use the versions this was derived from and set font on UILabel after setting attributedString

this will clobber the size and boldness encapsulated in the attributestring though

kudos for reading through all the answers up to here. You are a very patient man woman or child.

Lazy and compact storing text in the Tag property

If you are a bit lazy and do not use the Tag property of the controls for anything else you can use it to store the tooltip text and assign MouseHover event handlers to all such controls in one go like this:

private System.Windows.Forms.ToolTip ToolTip1;
private void PrepareTooltips()
{
    ToolTip1 = new System.Windows.Forms.ToolTip();
    foreach(Control ctrl in this.Controls)
    {
        if (ctrl is Button && ctrl.Tag is string)
        {
            ctrl.MouseHover += new EventHandler(delegate(Object o, EventArgs a)
            {
                var btn = (Control)o;
                ToolTip1.SetToolTip(btn, btn.Tag.ToString());
            });
        }
    }
}

In this case all buttons having a string in the Tag property is assigned a MouseHover event. To keep it compact the MouseHover event is defined inline using a lambda expression. In the event any button hovered will have its Tag text assigned to the Tooltip and shown.

You can use map :

List<String> names = 
    personList.stream()
              .map(Person::getName)
              .collect(Collectors.toList());

EDIT :

In order to combine the Lists of friend names, you need to use flatMap :

List<String> friendNames = 
    personList.stream()
              .flatMap(e->e.getFriends().stream())
              .collect(Collectors.toList());

Easiest way to do this

if this helpful hit up arrow! Tahnks!!

students = [ ('jack1', 'Apples1' , 341) ,
             ('Riti1', 'Mangos1'  , 311) ,
             ('Aadi1', 'Grapes1' , 301) ,
             ('Sonia1', 'Apples1', 321) ,
             ('Lucy1', 'Mangos1'  , 331) ,
             ('Mike1', 'Apples1' , 351),
              ('Mik', 'Apples1' , np.nan)
              ]
#Create a DataFrame object
df = pd.DataFrame(students, columns = ['Name1' , 'Product1', 'Sale1']) 
print(df)


    Name1 Product1  Sale1
0   jack1  Apples1    341
1   Riti1  Mangos1    311
2   Aadi1  Grapes1    301
3  Sonia1  Apples1    321
4   Lucy1  Mangos1    331
5   Mike1  Apples1    351
6     Mik  Apples1    NaN

# Select rows in above DataFrame for which ‘Product’ column contains the value ‘Apples’,
subset = df[df['Product1'] == 'Apples1']
print(subset)

 Name1 Product1  Sale1
0   jack1  Apples1    341
3  Sonia1  Apples1    321
5   Mike1  Apples1    351
6     Mik  Apples1    NA

# Select rows in above DataFrame for which ‘Product’ column contains the value ‘Apples’, AND notnull value in Sale

subsetx= df[(df['Product1'] == "Apples1")  & (df['Sale1'].notnull())]
print(subsetx)
    Name1   Product1    Sale1
0   jack1   Apples1      341
3   Sonia1  Apples1      321
5   Mike1   Apples1      351

# Select rows in above DataFrame for which ‘Product’ column contains the value ‘Apples’, AND Sale = 351

subsetx= df[(df['Product1'] == "Apples1")  & (df['Sale1'] == 351)]
print(subsetx)

   Name1 Product1  Sale1
5  Mike1  Apples1    351

# Another example
subsetData = df[df['Product1'].isin(['Mangos1', 'Grapes1']) ]
print(subsetData)

Name1 Product1  Sale1
1  Riti1  Mangos1    311
2  Aadi1  Grapes1    301
4  Lucy1  Mangos1    331

Here is the Original link I found this. I edit it a little bit -- https://thispointer.com/python-pandas-select-rows-in-dataframe-by-conditions-on-multiple-columns/

How to remove Node.js from Windows:

1. Take a deep breath.

2. Run npm cache clean --force

3. Uninstall from Programs & Features with the uninstaller.

4. Reboot (or you probably can get away with killing all node-related processes from Task Manager).

5. Look for these folders and remove them (and their contents) if any still exist. Depending on the version you installed, UAC settings, and CPU architecture, these may or may not exist:

   • C:\Program Files (x86)\Nodejs
   • C:\Program Files\Nodejs
   • C:\Users\{User}\AppData\Roaming\npm (or %appdata%\npm)
   • C:\Users\{User}\AppData\Roaming\npm-cache (or %appdata%\npm-cache)
   • C:\Users\{User}\.npmrc (and possibly check for that without the . prefix too)
   • C:\Users\{User}\AppData\Local\Temp\npm-*

6. Check your %PATH% environment variable to ensure no references to Nodejs or npm exist.

7. If it's still not uninstalled, type where node at the command prompt and you'll see where it resides -- delete that (and probably the parent directory) too.

8. Reboot, for good measure.

I was using CakePHP and I was seeing this error:

This page isn’t working
localhost is currently unable to handle this request.
HTTP ERROR 500

I went to see the CakePHP Debug Level defined at app\config\core.php:

/**
 * CakePHP Debug Level:
 *
 * Production Mode:
 *  0: No error messages, errors, or warnings shown. Flash messages redirect.
 *
 * Development Mode:
 *  1: Errors and warnings shown, model caches refreshed, flash messages halted.
 *  2: As in 1, but also with full debug messages and SQL output.
 *  3: As in 2, but also with full controller dump.
 *
 * In production mode, flash messages redirect after a time interval.
 * In development mode, you need to click the flash message to continue.
 */
Configure::write('debug', 0);

I chanted the value from 0 to 1:

Configure::write('debug', 1);

After this change, when trying to reload the page again, I saw the corresponding error:

Fatal error: Uncaught Exception: Facebook needs the CURL PHP extension.

Conclusion: The solution in my case to see the errors was to change the CakePHP Debug Level from 0 to 1 in order to show errors and warnings.

In PHP, passing by reference (&) is ... controversial. I recommend not using it unless you know why you need it and test the results.

I would recommend doing the following:

foreach ($fields as $key => $field) {
    if ($field['required'] && strlen($_POST[$field['name']]) <= 0) {
        $fields[$key]['value'] = "Some error";
    }
}

So basically use $field when you need the values, and $fields[$key] when you need to change the data.

Had the same problem. I apparently wrote the Main wrong:

public static void main(String[] args){

I missed the [] and that was the whole problem.

Check and recheck the Main function!

my_string := 'Hello,' + #13#10 + 'world!';

#13#10 is the CR/LF characters in decimal

You can also load the body of the script and execute it within the same process:

Set fs = CreateObject("Scripting.FileSystemObject")
Set ts = fs.OpenTextFile("script2.vbs")
body = ts.ReadAll
ts.Close
Execute body

For me this issue was caused by the file encoding format being wrong. I used another editor and it was saved as UTF-8-BOM so the very first line I had was @echo off but there was a hidden character in the front of it.

So I changed the encoding to plain old ANSI text, and then the issue went away.

With .value and INPUT tag

<HTML>
  <HEAD>
    <TITLE>Sum</TITLE>

    <script type="text/javascript">
      function sum()
      {

         var num1 = document.myform.number1.value;
         var num2 = document.myform.number2.value;
         var sum = parseInt(num1) + parseInt(num2);
         document.getElementById('add').value = sum;
      }
    </script>
  </HEAD>

  <BODY>
    <FORM NAME="myform">
      <INPUT TYPE="text" NAME="number1" VALUE=""/> + 
      <INPUT TYPE="text" NAME="number2" VALUE=""/>
      <INPUT TYPE="button" NAME="button" Value="=" onClick="sum()"/>
      <INPUT TYPE="text" ID="add" NAME="result" VALUE=""/>
    </FORM>

  </BODY>
</HTML>

with innerHTML and DIV

<HTML>
  <HEAD>
    <TITLE>Sum</TITLE>

    <script type="text/javascript">
      function sum()
      {

         var num1 = document.myform.number1.value;
         var num2 = document.myform.number2.value;
         var sum = parseInt(num1) + parseInt(num2);
         document.getElementById('add').innerHTML = sum;
      }
    </script>
  </HEAD>

  <BODY>
    <FORM NAME="myform">
      <INPUT TYPE="text" NAME="number1" VALUE=""/> + 
      <INPUT TYPE="text" NAME="number2" VALUE=""/>
      <INPUT TYPE="button" NAME="button" Value="=" onClick="sum()"/>
      <DIV  ID="add"></DIV>
    </FORM>

  </BODY>
</HTML>

You can subtract the time zone difference from now.

final Calendar calendar  = Calendar.getInstance();
final int      utcOffset = calendar.get(Calendar.ZONE_OFFSET) + calendar.get(Calendar.DST_OFFSET);
final long     tempDate  = new Date().getTime();

return new Date(tempDate - utcOffset);

HashMap operation is dependent factor of hashCode implementation. For the ideal scenario lets say the good hash implementation which provide unique hash code for every object (No hash collision) then the best, worst and average case scenario would be O(1). Let's consider a scenario where a bad implementation of hashCode always returns 1 or such hash which has hash collision. In this case the time complexity would be O(n).

Now coming to the second part of the question about memory, then yes memory constraint would be taken care by JVM.

document.getElementById("whatever").className += "classToKeep";

With the plus sign ('+') appending the class as opposed to overwriting any existing classes

You can also use the title attribute in your image tag

<img src="content/assets/thumbnails/transparent_150x150.png" alt="" title="hover text" />

First Step:-

Select Project Target -> Build Setting -> Search('Define') -> Define Module update value No to Yes

"Defines Module": YES.

"Always Embed Swift Standard Libraries" : YES.

"Install Objective-C Compatibility Header" : YES.

Second Step:-

Add Swift file Class in Objective C ".h" File as below

#import <UIKit/UIKit.h>

@class TestViewController(Swift File);

@interface TestViewController(Objective C File) : UIViewController

@end

Import 'ProjectName(Your Project Name)-Swift.h' in Objective C ".m" file

//TestViewController.m 
#import "TestViewController.h"

/*import ProjectName-Swift.h file to access Swift file here*/

#import "ProjectName-Swift.h"

http://www.unicode.org is the place to look for symbol names.

? BLACK CIRCLE        25CF
? MEDIUM BLACK CIRCLE 26AB
? BLACK LARGE CIRCLE  2B24

or even:

 NEW MOON SYMBOL   1F311

Good luck finding a font that supports them all. Only one shows up in Windows 7 with Chrome.

I took a similar approach as Sean3z but instead I have the connection closed everytime i make a query.

His way works if it's only executed on the entry point of your app, but let's say you have controllers that you want to do a var db = require('./db'). You can't because otherwise everytime you access that controller you will be creating a new connection.

To avoid that, i think it's safer, in my opinion, to open and close the connection everytime.

here is a snippet of my code.

mysq_query.js

// Dependencies
var mysql   = require('mysql'),
    config  = require("../config");

/*
 * @sqlConnection
 * Creates the connection, makes the query and close it to avoid concurrency conflicts.
 */
var sqlConnection = function sqlConnection(sql, values, next) {

    // It means that the values hasnt been passed
    if (arguments.length === 2) {
        next = values;
        values = null;
    }

    var connection = mysql.createConnection(config.db);
    connection.connect(function(err) {
        if (err !== null) {
            console.log("[MYSQL] Error connecting to mysql:" + err+'\n');
        }
    });

    connection.query(sql, values, function(err) {

        connection.end(); // close the connection

        if (err) {
            throw err;
        }

        // Execute the callback
        next.apply(this, arguments);
    });
}

module.exports = sqlConnection;

Than you can use it anywhere just doing like

var mysql_query = require('path/to/your/mysql_query');
mysql_query('SELECT * from your_table where ?', {id: '1'}, function(err, rows)   {
    console.log(rows);
});

UPDATED: config.json looks like

{
        "db": {
        "user"     : "USERNAME",
        "password" : "PASSWORD",
        "database" : "DATABASE_NAME",
        "socketPath": "/tmp/mysql.sock"
    }
}

Hope this helps.

If your request doesn't specify an Origin header, S3 won't include the CORS headers in the response. This really threw me because I kept trying to curl the files to test the CORS but curl doesn't include Origin.

I suggest to make an Extension of pull To Refresh to use in every class.

1) Make an empty swift file : File - New - File - Swift File.

2) Add the Following

    //  AppExtensions.swift

    import Foundation
    import UIKit    

    var tableRefreshControl:UIRefreshControl = UIRefreshControl()    

    //MARK:- VIEWCONTROLLER EXTENSION METHODS
    public extension UIViewController
    {
        func makePullToRefreshToTableView(tableName: UITableView,triggerToMethodName: String){

            tableRefreshControl.attributedTitle = NSAttributedString(string: "TEST: Pull to refresh")
            tableRefreshControl.backgroundColor = UIColor.whiteColor()
            tableRefreshControl.addTarget(self, action: Selector(triggerToMethodName), forControlEvents: UIControlEvents.ValueChanged)
            tableName.addSubview(tableRefreshControl)
        }
        func makePullToRefreshEndRefreshing (tableName: String)
        {
            tableRefreshControl.endRefreshing()
//additional codes

        }
    }    

3) In Your View Controller call these methods as :

  override func viewWillAppear(animated: Bool) {

self.makePullToRefreshToTableView(bidderListTable, triggerToMethodName: "pullToRefreshBidderTable")
}

4) At some point you wanted to end refreshing:

  func pullToRefreshBidderTable() {
self.makePullToRefreshEndRefreshing("bidderListTable")    
//Code What to do here.
}
OR    
self.makePullToRefreshEndRefreshing("bidderListTable")

You don't need to create the SSH keys on the Jenkins server, nor do you need to store the SSH keys on the Jenkins server's filesystem. This bit of information is crucial in environments where Jenkins servers instances may be created and destroyed frequently.

Generating the SSH Key Pair

On any machine (Windows, Linux, MacOS ...doesn't matter) generate an SSH key pair. Use this article as guide:

• GitHub: Generating a new SSH key and adding it to the ssh-agent (you can skip the section "Adding your SSH key to the ssh-agent")

On the Target Server

On the target server, you will need to place the content of the public key (id_rsa.pub per the above article) into the .ssh/authorized_keys file under the home directory of the user which Jenkins will be using for deployment.

In Jenkins

Using "Publish over SSH" Plugin

Ref: https://plugins.jenkins.io/publish-over-ssh/

Visit: Jenkins > Manage Jenkins > Configure System > Publish over SSH

• If the private key is encrypted, then you will need to enter the passphrase for the key into the "Passphrase" field, otherwise leave it alone.
• Leave the "Path to key" field empty as this will be ignored anyway when you use a pasted key (next step)
• Copy and paste the contents of the private key (id_rsa per the above article) into the "Key" field
• Under "SSH Servers", "Add" a new server configuration for your target server.

Using Stored Global Credentials

Visit: Jenkins > Credentials > System > Global credentials (unrestricted) > Add Credentials

• Kind: "SSH Username with private key"
• Scope: "Global"
• ID: [CREAT A UNIQUE ID FOR THIS KEY]
• Description: [optionally, enter a decription]
• Username: [USERNAME JENKINS WILL USE TO CONNECT TO REMOTE SERVER]
• Private Key: [select "Enter directly"]
• Key: [paste the contents of the private key (id_rsa per the above article)]
• Passphrase: [enter the passphrase for the key, or leave it blank if the key is not encrypted]

private static String readAll(Reader rd) throws IOException {
    StringBuilder sb = new StringBuilder();
    int cp;
    while ((cp = rd.read()) != -1) {
      sb.append((char) cp);
    }
    return sb.toString();
  }

 String jsonText = readAll(inputofyourjsonstream);
 JSONObject json = new JSONObject(jsonText);
 JSONArray arr = json.getJSONArray("Compemployes");

Your arr would looks like: [ { "id":1001, "name":"jhon" }, { "id":1002, "name":"jhon" } ] You can use:

arr.getJSONObject(index)

to get the objects inside of the array.

If you are using ajax then (making it as simple as possible)

1. Add your loading gif image to html and make it hidden (using style in html itself now, you can add it to separate CSS):

   <img src="path\to\loading\gif" id="img" style="display:none"/ >
   

2. Show the image when button is clicked and hide it again on success function

   $('#buttonID').click(function(){
     $('#img').show(); //<----here
     $.ajax({
       ....
      success:function(result){
          $('#img').hide();  //<--- hide again
      }
   }
   

Make sure you hide the image on ajax error callbacks too to make sure the gif hides even if the ajax fails.

Fair warning:

element.onclick() does not behave as expected. It only runs the code within onclick="" attribute, but does not trigger default behavior.

I had similar issue with radio button not setting to checked, even though onclick custom function was running fine. Had to add radio.checked = "true"; to set it. Probably the same goes and for other elements (after a.onclick() there should be also window.location.href = "url";)

Manually add it when you build the query:

SELECT 'Site1' AS SiteName, t1.column, t1.column2
FROM t1

UNION ALL
SELECT 'Site2' AS SiteName, t2.column, t2.column2
FROM t2

UNION ALL
...

EXAMPLE:

DECLARE @t1 TABLE (column1 int, column2 nvarchar(1))
DECLARE @t2 TABLE (column1 int, column2 nvarchar(1))

INSERT INTO @t1
SELECT 1, 'a'
UNION SELECT 2, 'b'

INSERT INTO @t2
SELECT 3, 'c'
UNION SELECT 4, 'd'


SELECT 'Site1' AS SiteName, t1.column1, t1.column2
FROM @t1 t1

UNION ALL
SELECT 'Site2' AS SiteName, t2.column1, t2.column2
FROM @t2 t2

RESULT:

SiteName  column1  column2
Site1       1      a
Site1       2      b
Site2       3      c
Site2       4      d

The show method does what you're looking for.

For example, given the following dataframe of 3 rows, I can print just the first two rows like this:

df = sqlContext.createDataFrame([("foo", 1), ("bar", 2), ("baz", 3)], ('k', 'v'))
df.show(n=2)

which yields:

+---+---+
|  k|  v|
+---+---+
|foo|  1|
|bar|  2|
+---+---+
only showing top 2 rows

There isn't a magic bullet solution for what you're looking for, unfortunately. Here's what you can do:

• create an Interface class using this command in the Visual Studio Command Prompt window:

  wsdl.exe yourFile.wsdl /l:CS /serverInterface
  Use VB or CS for your language of choice. This will create a new .cs or .vb file.

• Create a new .NET Web Service project. Import Existing File into your project - the file that was created in the step above.

• In your .asmx.cs file in Code-View, modify your class as such:

 public class MyWebService : System.Web.Services.WebService, IMyWsdlInterface
 {    
     [WebMethod]
     public string GetSomeString()
     {
         //you'll have to write your own business logic 
         return "Hello SOAP World";
     }
 }

I usually use git add --all to remove files / folders from remote repositories

rm -r folder_name
git add --all
git commit -m "some comment"
git push origin master

master can be replaced by any other branch of the repository.

Deleting the file will also remove the content. See remove file.

Just delete the old build from the device and reinstall the same. Because device.keystore is already exist in the device so just uninstall the build and reinstall the APK thats all..

Thanks

XCOPY /S folder1\data.zip copy_of_folder1  
XCOPY /S folder1\info.txt copy_of_folder1

EDIT: If you want to preserve the empty folders (which, on rereading your post, you seem to) use /E instead of /S.

Most likely, the userdata() function is returning an object, not a string. Look into the documentation (or var_dump the return value) to find out which value you need to use.

Since the driver.window_handles is not in order , a better solution is this.

first switch to the first tab using the shortcut Control + X to switch to the 'x' th tab in the browser window .

driver.findElement(By.cssSelector("body")).sendKeys(Keys.CONTROL + "1");
# goes to 1st tab

driver.findElement(By.cssSelector("body")).sendKeys(Keys.CONTROL + "4");
# goes to 4th tab if its exists or goes to last tab.

Assuming a is a string. The Slice notation in python has the syntax -

list[<start>:<stop>:<step>]

So, when you do a[::-1], it starts from the end towards the first taking each element. So it reverses a. This is applicable for lists/tuples as well.

Example -

>>> a = '1234'
>>> a[::-1]
'4321'

Then you convert it to int and then back to string (Though not sure why you do that) , that just gives you back the string.

@Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
    super.onPageStarted(view, url, favicon);
    if (url.equals("your url")) {
        
            Intent intent = new Intent(view.getContext(), TransferAllDoneActivity.class);
            startActivity(intent);
        
    }
}

it seems you can use @json($leads) since laravel 5.5

https://laravel.com/docs/5.5/blade

package cube

import (
    "encoding/json"
    "fmt"
    "github.com/magiconair/properties/assert"
    "k8s.io/api/rbac/v1beta1"
    v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
    "testing"
)

func TestRole(t *testing.T)  {
    clusterRoleBind := &v1beta1.ClusterRoleBinding{
        ObjectMeta: v1.ObjectMeta{
            Name: "serviceaccounts-cluster-admin",
        },
        RoleRef: v1beta1.RoleRef{
            APIGroup: "rbac.authorization.k8s.io",
            Kind:     "ClusterRole",
            Name:     "cluster-admin",
        },
        Subjects: []v1beta1.Subject{{
            Kind:     "Group",
            APIGroup: "rbac.authorization.k8s.io",
            Name:     "system:serviceaccounts",
        },
        },
    }
    b, err := json.MarshalIndent(clusterRoleBind, "", "  ")
    assert.Equal(t, nil, err)
    fmt.Println(string(b))
}

In Chrome, go to options (Customize and Control, the 3 dots/bars at top right) ---> More Tools ---> save page as

save page as  
filename     : any_name.html 
save as type : webpage complete.

Then you will get any_name.html and any_name folder.

I thought I would update this post a bit and say that alot of the iOS community has moved over to AFNetworking after ASIHTTPRequest was abandoned. I highly recommend it. It's a great wrapper around NSURLConnection and allows for asynchronous calls, and basically anything you might need.

You can do this in this way:

use this jQuery plugin for pre & post paste events:

$.fn.pasteEvents = function( delay ) {
    if (delay == undefined) delay = 20;
    return $(this).each(function() {
        var $el = $(this);
        $el.on("paste", function() {
            $el.trigger("prepaste");
            setTimeout(function() { $el.trigger("postpaste"); }, delay);
        });
    });
};

Now you can use this plugin;:

$('#txt').on("prepaste", function() { 

    $(this).find("*").each(function(){

        var tmp=new Date.getTime();
        $(this).data("uid",tmp);
    });


}).pasteEvents();

$('#txt').on("postpaste", function() { 


  $(this).find("*").each(function(){

     if(!$(this).data("uid")){
        $(this).removeClass();
          $(this).removeAttr("style id");
      }
    });
}).pasteEvents();

Explaination

First set a uid for all existing elements as data attribute.

Then compare all nodes POST PASTE event. So by comparing you can identify the newly inserted one because they will have a uid, then just remove style/class/id attribute from newly created elements, so that you can keep your older formatting.

In addition to the provided answers, if you want to convert Enumerable#max into a max method that can call a variable number or arguments, like in some other programming languages, you could write:

def max(*values)
 values.max
end

Output:

max(7, 1234, 9, -78, 156)
=> 1234

This abuses the properties of the splat operator to create an array object containing all the arguments provided, or an empty array object if no arguments were provided. In the latter case, the method will return nil, since calling Enumerable#max on an empty array object returns nil.

If you want to define this method on the Math module, this should do the trick:

module Math
 def self.max(*values)
  values.max
 end
end

Note that Enumerable.max is, at least, two times slower compared to the ternary operator (?:). See Dave Morse's answer for a simpler and faster method.

To get information about the table's column, you can use:

\dt+ [tablename]

To get information about the datatype in the table, you can use:

\dT+ [datatype]

I understand the question is with regards to Ubuntu.

But if you're getting the same error on a Mac and don't want $ sudo mongod running on a separate tab, you can do the following to fix the connection error, if you have Homebrew -

brew services start mongodb

Based on the answer from this thread - Cannot connect to mongodb errno:61 Connection refused

1. Define the expected and desired output for a normal case, with correct input.

2. Now, implement the test by declaring a class, name it anything (Usually something like TestAddingModule), and add the testAdd method to it (i.e. like the one below) :

   • Write a method, and above it add the @Test annotation.
   • In the method, run your binary sum and assertEquals(expectedVal,calculatedVal).

   • Test your method by running it (in Eclipse, right click, select Run as ? JUnit test).

     //for normal addition 
     @Test
     public void testAdd1Plus1() 
     {
         int x  = 1 ; int y = 1;
         assertEquals(2, myClass.add(x,y));
     }
     

3. Add other cases as desired.

   • Test that your binary sum does not throw a unexpected exception if there is an integer overflow.

   • Test that your method handles Null inputs gracefully (example below).

     //if you are using 0 as default for null, make sure your class works in that case.
     @Test
     public void testAdd1Plus1() 
     {
         int y = 1;
         assertEquals(0, myClass.add(null,y));
     }
     

Please don't use jQuery for this in 2018! There is no reason to include an entire external library just to perform this one action which can be achieved with one line:

Change cursor to spinner: document.body.style.cursor = 'wait';

Revert cursor to normal: document.body.style.cursor = 'default';

The problem may be with jquery selector you've chosen $("video") is not a selector

The right selector may be putting an id element for video tag i.e.
Let's say your video element looks like this:

<video id="vid1" width="480" height="267" oster="example.jpg" durationHint="33"> 
    <source src="video1.ogv" /> 
    <source src="video2.ogv" /> 
</video> 

Then you can select it via $("#vid1") with hash mark (#), id selector in jquery. If a video element is exposed in function,then you have access to HtmlVideoElement (HtmlMediaElement).This elements has control over video element,in your case you can use pause() method for your video element.

Check reference for VideoElement here.
Also check that there is a fallback reference here.

What you're trying to do is essentially to find a path between two vertices in a (directed?) graph check out Dijkstra's algorithm if you need shortest path or write a simple recursive function if you need whatever paths exist.

You can simply assign a loader image to the same tag on which you later will load content using an Ajax call:

$("#message").html('<span>Loading...</span>');

$('#message').load('index.php?pg=ajaxFlashcard');

You can also replace the span tag with an image tag.

This worked for me (mac)

sudo curl https://bootstrap.pypa.io/get-pip.py | python

Assuming GroupDetails as in orid's answer have you tried JPA 2.1 @ConstructorResult?

@SqlResultSetMapping(
    name="groupDetailsMapping",
    classes={
        @ConstructorResult(
            targetClass=GroupDetails.class,
            columns={
                @ColumnResult(name="GROUP_ID"),
                @ColumnResult(name="USER_ID")
            }
        )
    }
)

@NamedNativeQuery(name="getGroupDetails", query="SELECT g.*, gm.* FROM group g LEFT JOIN group_members gm ON g.group_id = gm.group_id and gm.user_id = :userId WHERE g.group_id = :groupId", resultSetMapping="groupDetailsMapping")

and use following in repository interface:

GroupDetails getGroupDetails(@Param("userId") Integer userId, @Param("groupId") Integer groupId);

According to Spring Data JPA documentation, spring will first try to find named query matching your method name - so by using @NamedNativeQuery, @SqlResultSetMapping and @ConstructorResult you should be able to achieve that behaviour

I wanted to comment, but since my reputation won't qualify for commenting, it had to be an answer. Github will actually let you not only cancel a pull request, but also delete it by simply deleting the fork you are trying to push. Hope this may help some others googling this.

This is just an extension to above provided answers.

1. There can be only one variable argument in the method.
2. Variable argument (varargs) must be the last argument.

Clearly explained here and rules to follow to use Variable Argument.

If you are using v2.2.0 then there is one more option available to detect changes in $routes.

To react to params changes in the same component, you can watch the $route object:

const User = {
  template: '...',
  watch: {
    '$route' (to, from) {
      // react to route changes...
    }
  }
}

Or, use the beforeRouteUpdate guard introduced in 2.2:

const User = {
  template: '...',
  beforeRouteUpdate (to, from, next) {
    // react to route changes...
    // don't forget to call next()
  }
}

Reference: https://router.vuejs.org/en/essentials/dynamic-matching.html

Your code doesn't get the UTF-8 into memory as you read it back into a string again, so its no longer in UTF-8, but back in UTF-16 (though ideally its best to consider strings at a higher level than any encoding, except when forced to do so).

To get the actual UTF-8 octets you could use:

var serializer = new XmlSerializer(typeof(SomeSerializableObject));

var memoryStream = new MemoryStream();
var streamWriter = new StreamWriter(memoryStream, System.Text.Encoding.UTF8);

serializer.Serialize(streamWriter, entry);

byte[] utf8EncodedXml = memoryStream.ToArray();

I've left out the same disposal you've left. I slightly favour the following (with normal disposal left in):

var serializer = new XmlSerializer(typeof(SomeSerializableObject));
using(var memStm = new MemoryStream())
using(var  xw = XmlWriter.Create(memStm))
{
  serializer.Serialize(xw, entry);
  var utf8 = memStm.ToArray();
}

Which is much the same amount of complexity, but does show that at every stage there is a reasonable choice to do something else, the most pressing of which is to serialise to somewhere other than to memory, such as to a file, TCP/IP stream, database, etc. All in all, it's not really that verbose.

If you're looking to quickly implement this in a Rails controller action to send a JSON response:

def index
  my_json = '{ "key": "value" }'
  render json: JSON.pretty_generate( JSON.parse my_json )
end

You can try this

$scope.$watch('tags ',function(){

    $scope.tags = $filter('lowercase')($scope.tags);

});

The encrypted string had two special characters, + and =.

'+' sign was giving the error, so below solution worked well:

//replace + sign

encryted_string = encryted_string.Replace("+", "%2b");

//`%2b` is HTTP encoded string for **+** sign

OR

//encode special charactes 

encryted_string = HttpUtility.UrlEncode(encryted_string);

//then pass it to the decryption process
...

This may not be the slickest solution, but it is straightforward. You can write an extension to the HtmlHelper.EditorFor class. In that extension, you can supply an options parameter that will write the options to the ViewData for the helper. Here's some code:

First, the extension method:

public static MvcHtmlString EditorFor<TModel, TProperty>(this HtmlHelper<TModel> helper, Expression<Func<TModel, TProperty>> expression, TemplateOptions options)
{
    return helper.EditorFor(expression, options.TemplateName, new
    {
        cssClass = options.CssClass
    });
}

Next, the options object:

public class TemplateOptions
{
    public string TemplateName { get; set; }
    public string CssClass { get; set; }
    // other properties for info you'd like to pass to your templates,
    // and by using an options object, you avoid method overload bloat.
}

And finally, here's the line from the String.ascx template:

<%= Html.TextBox("", ViewData.TemplateInfo.FormattedModelValue, new { @class = ViewData["cssClass"] ?? "" }) %>

Frankly, I think this is straightforward and clear to the poor soul who has to maintain your code down the road. And it is easy to extend for various other bits of info you'd like to pass to your templates. It's working well so far for me in a project where I'm trying to wrap as much as I can in a set of template to help standardize the surrounding html, a la http://bradwilson.typepad.com/blog/2009/10/aspnet-mvc-2-templates-part-5-master-page-templates.html.

If you want to delete the index of array:

Use array_name.pop(index_no.)

ex:-

>>> arr = [1,2,3,4]
>>> arr.pop(2)
>>>arr
[1,2,4]

If you want to delete a particular string/element from the array then

>>> arr1 = ['python3.6' , 'python2' ,'python3']
>>> arr1.remove('python2')
>>> arr1
['python3.6','python3']

Mouseover events bubble, so you can put a single listener on the body and wait for them to bubble up, then grab the event.target or event.srcElement:

function getTarget(event) {
    var el = event.target || event.srcElement;
    return el.nodeType == 1? el : el.parentNode;
}

<body onmouseover="doSomething(getTarget(event));">

Its really working if we use Doctype on our web page jquery(window) will return the viewport height else it will return the complete document height.

Define the following tag on the top of your web page: <!DOCTYPE html>

You can do it by following 3 steps:

 - svn rm old_file_name
 - svn add new_file_name
 - svn commit

According to the docs:

"If the onPressed callback is null, then the button will be disabled and by default will resemble a flat button in the disabledColor."

https://docs.flutter.io/flutter/material/RaisedButton-class.html

So, you might do something like this:

    RaisedButton(
      onPressed: calculateWhetherDisabledReturnsBool() ? null : () => whatToDoOnPressed,
      child: Text('Button text')
    );

Apart from what Andy mentioned, there is another difference which could be important - write-host directly writes to the host and return nothing, meaning that you can't redirect the output, e.g., to a file.

---- script a.ps1 ----
write-host "hello"

Now run in PowerShell:

PS> .\a.ps1 > someFile.txt
hello
PS> type someFile.txt
PS>

As seen, you can't redirect them into a file. This maybe surprising for someone who are not careful.

But if switched to use write-output instead, you'll get redirection working as expected.

You could use a regular expression like this

If Regex.IsMatch(number, "^[0-9 ]+$") Then

...

End If

Formatting your code a bit, you have only closed the inner hover function. You have not closed the outer parts, marked below:

$(// missing closing)
 function() { // missing closing }
     $("#mewlyDiagnosed").hover(
        function() {
            $("#mewlyDiagnosed").animate({'height': '237px', 'top': "-75px"});
        }, 
        function() {
            $("#mewlyDiagnosed").animate({'height': '162px', 'top': "0px"});
        });

Note that ord() doesn't give you the ASCII value per se; it gives you the numeric value of the character in whatever encoding it's in. Therefore the result of ord('ä') can be 228 if you're using Latin-1, or it can raise a TypeError if you're using UTF-8. It can even return the Unicode codepoint instead if you pass it a unicode:

>>> ord(u'?')
12354

In your example, it’s fine as it is: it’s simple and works. The only things I’d suggest are:

1. validating the data POSTed

2. make sure your API is sending the Content-Type header to tell the client to expect a JSON response:

   header('Content-Type: application/json');
   echo json_encode($response);
   

Other than that, an API is something that takes an input and provides an output. It’s possible to “over-engineer” things, in that you make things more complicated that need be.

If you wanted to go down the route of controllers and models, then read up on the MVC pattern and work out how your domain objects fit into it. Looking at the above example, I can see maybe a MathController with an add() action/method.

There are a few starting point projects for RESTful APIs on GitHub that are worth a look.

In PostgreSQL 9.2 and above, to disconnect everything except your session from the database you are connected to:

SELECT pg_terminate_backend(pg_stat_activity.pid)
FROM pg_stat_activity
WHERE datname = current_database()
  AND pid <> pg_backend_pid();

In older versions it's the same, just change pid to procpid. To disconnect from a different database just change current_database() to the name of the database you want to disconnect users from.

You may want to REVOKE the CONNECT right from users of the database before disconnecting users, otherwise users will just keep on reconnecting and you'll never get the chance to drop the DB. See this comment and the question it's associated with, How do I detach all other users from the database.

If you just want to disconnect idle users, see this question.

I do not see how this problem is related to facebook AJAX. In fact the issue also occurs with JavaScript disabled and purely redirect based logins.

An example exchange with facebook:

1. GET <https://www.facebook.com/dialog/oauth?client_id=MY_APP_ID&scope=email&redirect_uri=MY_REDIRECT_URL> RESPONSE 302 Found Location: <https://www.facebook.com/connect/uiserver.php?[...]>  
2. GET <https://www.facebook.com/connect/uiserver.php?[...]> RESPONSE 302 Found MY_REDIRECT_URL?code=FB_CODE#_  
3. GET MY_REDIRECT_URL?code=FB_CODE#_  

Happens only with Firefox for me too.

Don't use rows.Count. That's asking for how many rows exist. If there are many, it will take some time to count them. All you really want to know is "is there at least one?" You don't care if there are 10 or 1000 or a billion. You just want to know if there is at least one. If I give you a box and ask you if there are any marbles in it, will you dump the box on the table and start counting? Of course not. Using LINQ, you might think that this would work:

bool hasRows = dataTable1.Rows.Any()

But unfortunately, DataRowCollection does not implement IEnumerable. So instead, try this:

bool hasRows = dataTable1.Rows.GetEnumerator().MoveNext()

You will of course need to check if the dataTable1 is null first. if it's not, this will tell you if there are any rows without enumerating the whole lot.

The best practive is to always use it (or have the IDE fill them for you)

@Override usefulness is to detect changes in parent classes which has not been reported down the hierarchy. Without it, you can change a method signature and forget to alter its overrides, with @Override, the compiler will catch it for you.

That kind of safety net is always good to have.

tabindex HTML attribute indicates if its element can be focused, and if/where it participates in sequential keyboard navigation (usually with the Tab key). Read MDN Web Docs for full reference.

Using Jquery

$( "#division" ).keydown(function(evt) {
    evt = evt || window.event;
    console.log("keydown: " + evt.keyCode);
});

#division {
  width: 90px;
  height: 30px;
  background: lightgrey;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<div id="division" tabindex="0"></div>

Using JavaScript

var el = document.getElementById("division");

el.onkeydown = function(evt) {
    evt = evt || window.event;
    console.log("keydown: " + evt.keyCode);
};

#division {
  width: 90px;
  height: 30px;
  background: lightgrey;
}

<div id="division" tabindex="0"></div>

As appsthatmatter says, in the layout something like:

<ListView android:id="@+id/listView" ... />
<TextView android:id="@+id/emptyElement" ... />

and in the linked Activity:

this.listView = (ListView) findViewById(R.id.listView);
this.listView.setEmptyView(findViewById(R.id.emptyElement));

Does also work with a GridView...