I faced the same issue although i added [System.Web.Mvc.AllowHtml] to the concerning property as described in some answers.

In my case, i have an UnhandledExceptionFilter class that accesses the Request object before MVC validation takes place (and therefore AllowHtml has not effect) and this access raises a [HttpRequestValidationException] A potentially dangerous Request.Form value was detected from the client.

This means, accessing certain properties of a Request object implicitly fires validation (in my case its the Params property).

A solution to prevent validation is documented on MSDN

To disable request validation for a specific field in a request (for example, for an input element or query string value), call the Request.Unvalidated method when you get the item, as shown in the following example

Therefore, if you have code like this

var lParams = aRequestContext.HttpContext.Request.Params;
if (lParams.Count > 0)
{
  ...

change it to

var lUnvalidatedRequest = aRequestContext.HttpContext.Request.Unvalidated;

var lForm = lUnvalidatedRequest.Form;
if (lForm.Count > 0)
{
  ...

or just use the Form property which does not seem to fire validation

var lForm = aRequestContext.HttpContext.Request.Form;
if (lForm.Count > 0)
{
  ...

This works without changing the validation mode.

You have to use a System.Web.Helpers.Validation.Unvalidated helper from System.Web.WebPages.dll. It is going to return a UnvalidatedRequestValues object which allows to access the form and QueryString without validation.

For example,

var queryValue = Server.UrlDecode(Request.Unvalidated("MyQueryKey"));

Works for me for MVC3 and .NET 4.

Below is a snippet to enable you format the date to a desirable output:

var time = new Date();
var time = time.getTime();

var theyear = time.getFullYear();
var themonth = time.getMonth() + 1;
var thetoday = time.getDate();

document.write("The date is: ");
document.write(theyear + "/" + themonth + "/" + thetoday);

Update for PHP 7 (thanks shock_gone_wild)

PHP 7 introduces the so called null coalescing operator which simplifies the below statements to:

$var = $var ?? "default";

Before PHP 7

No, there is no special operator or special syntax for this. However, you could use the ternary operator:

$var = isset($var) ? $var : "default";

Or like this:

isset($var) ?: $var = 'default';

To get the currently logged in user:

System.getProperty("user.name");

To get the host name of the machine:

InetAddress.getLocalHost().getHostName();

To answer the last part of your question, the Java API says that getHostName() will return

the host name for this IP address, or if the operation is not allowed by the security check, the textual representation of the IP address.

In openCV whenever you try to display an oversized image or image bigger than your display resolution you get the cropped display. It's a default behaviour.
In order to view the image in the window of your choice openCV encourages to use named window. Please refer to namedWindow documentation

The function namedWindow creates a window that can be used as a placeholder for images and trackbars. Created windows are referred to by their names.

cv.namedWindow(name, flags=CV_WINDOW_AUTOSIZE) where each window is related to image container by the name arg, make sure to use same name

eg:

import cv2
frame = cv2.imread('1.jpg')
cv2.namedWindow("Display 1")
cv2.resizeWindow("Display 1", 300, 300)
cv2.imshow("Display 1", frame)

Android's permission system is one of the biggest security concern all along since those permissions are asked for at install time. Once installed, the application will be able to access all of things granted without any user's acknowledgement what exactly application does with the permission.

Android 6.0 Marshmallow introduces one of the largest changes to the permissions model with the addition of runtime permissions, a new permission model that replaces the existing install time permissions model when you target API 23 and the app is running on an Android 6.0+ device

Courtesy goes to Requesting Permissions at Run Time .

Example

Declare this as Global

private static final int PERMISSION_REQUEST_CODE = 1;

Add this in your onCreate() section

After setContentView(R.layout.your_xml);

 if (Build.VERSION.SDK_INT >= 23)
    {
        if (checkPermission())
        {
            // Code for above or equal 23 API Oriented Device 
            // Your Permission granted already .Do next code
        } else {
            requestPermission(); // Code for permission
        }
    }
  else
    {

       // Code for Below 23 API Oriented Device 
       // Do next code
    }

Now adding checkPermission() and requestPermission()

 private boolean checkPermission() {
    int result = ContextCompat.checkSelfPermission(Your_Activity.this, android.Manifest.permission.WRITE_EXTERNAL_STORAGE);
    if (result == PackageManager.PERMISSION_GRANTED) {
        return true;
    } else {
        return false;
    }
}

private void requestPermission() {

    if (ActivityCompat.shouldShowRequestPermissionRationale(Your_Activity.this, android.Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
        Toast.makeText(Your_Activity.this, "Write External Storage permission allows us to do store images. Please allow this permission in App Settings.", Toast.LENGTH_LONG).show();
    } else {
        ActivityCompat.requestPermissions(Your_Activity.this, new String[]{android.Manifest.permission.WRITE_EXTERNAL_STORAGE}, PERMISSION_REQUEST_CODE);
    }
}

@Override
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
    switch (requestCode) {
        case PERMISSION_REQUEST_CODE:
            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                Log.e("value", "Permission Granted, Now you can use local drive .");
            } else {
                Log.e("value", "Permission Denied, You cannot use local drive .");
            }
            break;
    }
}

FYI

onRequestPermissionsResult

This interface is the contract for receiving the results for permission requests.

This will select just the leaf elements that contain "I am a simple string".

$('*:contains("I am a simple string")').each(function(){
     if($(this).children().length < 1) 
          $(this).css("border","solid 2px red") });

Paste the following into the address bar to test it.

javascript: $('*:contains("I am a simple string")').each(function(){ if($(this).children().length < 1) $(this).css("border","solid 2px red") }); return false;

If you want to grab just "I am a simple string". First wrap the text in an element like so.

$('*:contains("I am a simple string")').each(function(){
     if($(this).children().length < 1) 
          $(this).html( 
               $(this).text().replace(
                    /"I am a simple string"/
                    ,'<span containsStringImLookingFor="true">"I am a simple string"</span>' 
               )  
           ) 
});

and then do this.

$('*[containsStringImLookingFor]').css("border","solid 2px red");

Let's just test.

Connect as superuser, and then:

SHOW VARIABLES LIKE "%version%"; 
+-------------------------+------------------------------+ 
| Variable_name           | Value                        | 
+-------------------------+------------------------------+ 
| version                 | 10.0.23-MariaDB-0+deb8u1-log | 

and then

USE mysql;

Setup

Create a user foo with password bar for testing:

CREATE USER foo@'%' IDENTIFIED BY 'bar'; FLUSH PRIVILEGES;

Connect

To connect to the Unix Domain Socket (i.e. the I/O pipe that is named by the filesystem entry /var/run/mysqld/mysqld.sock or some such), run this on the command line (use the --protocol option to make doubly sure)

mysql -pbar -ufoo
mysql -pbar -ufoo --protocol=SOCKET

One expects that the above matches "user comes from localhost" but certainly not "user comes from 127.0.0.1".

To connect to the server from "127.0.0.1" instead, run this on the command line

mysql -pbar -ufoo --bind-address=127.0.0.1 --protocol=TCP

If you leave out --protocol=TCP, the mysql command will still try to use the Unix domain socket. You can also say:

mysql -pbar -ufoo --bind-address=127.0.0.1 --host=127.0.0.1

The two connection attempts in one line:

export MYSQL_PWD=bar; \
mysql -ufoo --protocol=SOCKET --execute="SELECT 1"; \
mysql -ufoo --bind-address=127.0.0.1 --host=127.0.0.1 --execute="SELECT 1"

(the password is set in the environment so that it is passed to the mysql process)

Verification In Case Of Doubt

To really check whether the connection goes via a TCP/IP socket or a Unix Domain socket

1. get the PID of the mysql client process by examining the output of ps faux
2. run lsof -n -p<yourpid>.

You will see something like:

mysql [PID] quux 3u IPv4 [code] 0t0 TCP 127.0.0.1:[port]->127.0.0.1:mysql (ESTABLISHED)

or

mysql [PID] quux 3u unix [code] 0t0 [code] socket

So:

Case 0: Host = '10.10.10.10' (null test)

update user set host='10.10.10.10' where user='foo'; flush privileges;

• Connect using socket: FAILURE
• Connect from 127.0.0.1: FAILURE

Case 1: Host = '%'

update user set host='%' where user='foo'; flush privileges;

• Connect using socket: OK
• Connect from 127.0.0.1: OK

Case 2: Host = 'localhost'

update user set host='localhost' where user='foo';flush privileges;

Behaviour varies and this apparently depends on skip-name-resolve. If set, causes lines with localhost to be ignored according to the log. The following can be seen in the error log: "'user' entry 'root@localhost' ignored in --skip-name-resolve mode.". This means no connecting through the Unix Domain Socket. But this is empirically not the case. localhost now means ONLY the Unix Domain Socket, and no longer matched 127.0.0.1.

skip-name-resolve is off:

• Connect using socket: OK
• Connect from 127.0.0.1: OK

skip-name-resolve is on:

• Connect using socket: OK
• Connect from 127.0.0.1: FAILURE

Case 3: Host = '127.0.0.1'

update user set host='127.0.0.1' where user='foo';flush privileges;

• Connect using socket: FAILURE
• Connect from 127.0.0.1: OK

Case 4: Host = ''

update user set host='' where user='foo';flush privileges;

• Connect using socket: OK
• Connect from 127.0.0.1: OK

(According to MySQL 5.7: 6.2.4 Access Control, Stage 1: Connection Verification, The empty string '' also means “any host” but sorts after '%'. )

Case 5: Host = '192.168.0.1' (extra test)

('192.168.0.1' is one of my machine's IP addresses, change appropriately in your case)

update user set host='192.168.0.1' where user='foo';flush privileges;

• Connect using socket: FAILURE
• Connect from 127.0.0.1: FAILURE

but

• Connect using mysql -pbar -ufoo -h192.168.0.1: OK (!)

The latter because this is actually TCP connection coming from 192.168.0.1, as revealed by lsof:

TCP 192.168.0.1:37059->192.168.0.1:mysql (ESTABLISHED)

Edge Case A: Host = '0.0.0.0'

update user set host='0.0.0.0' where user='foo';flush privileges;

• Connect using socket: FAILURE
• Connect from 127.0.0.1: FAILURE

Edge Case B: Host = '255.255.255.255'

update user set host='255.255.255.255' where user='foo';flush privileges;

• Connect using socket: FAILURE
• Connect from 127.0.0.1: FAILURE

Edge Case C: Host = '127.0.0.2'

(127.0.0.2 is perfectly valid loopback address equivalent to 127.0.0.1 as defined in RFC6890)

update user set host='127.0.0.2' where user='foo';flush privileges;

• Connect using socket: FAILURE
• Connect from 127.0.0.1: FAILURE

Interestingly:

• mysql -pbar -ufoo -h127.0.0.2 connects from 127.0.0.1 and is FAILURE
• mysql -pbar -ufoo -h127.0.0.2 --bind-address=127.0.0.2 is OK

Cleanup

delete from user where user='foo';flush privileges;

Addendum

To see what is actually in the mysql.user table, which is one of the permission tables, use:

SELECT SUBSTR(password,1,6) as password, user, host,
Super_priv AS su,
Grant_priv as gr,
CONCAT(Select_priv, Lock_tables_priv) AS selock,
CONCAT(Insert_priv, Update_priv, Delete_priv, Create_priv, Drop_priv) AS modif,
CONCAT(References_priv, Index_priv, Alter_priv) AS ria,
CONCAT(Create_tmp_table_priv, Create_view_priv, Show_view_priv) AS views,
CONCAT(Create_routine_priv, Alter_routine_priv, Execute_priv, Event_priv, Trigger_priv) AS funcs,
CONCAT(Repl_slave_priv, Repl_client_priv) AS replic,
CONCAT(Shutdown_priv, Process_priv, File_priv, Show_db_priv, Reload_priv, Create_user_priv) AS admin
FROM user ORDER BY user, host;

this gives:

+----------+----------+-----------+----+----+--------+-------+-----+-------+-------+--------+--------+
    | password | user     | host      | su | gr | selock | modif | ria | views | funcs | replic | admin  |
    +----------+----------+-----------+----+----+--------+-------+-----+-------+-------+--------+--------+
    | *E8D46   | foo      |           | N  | N  | NN     | NNNNN | NNN | NNN   | NNNNN | NN     | NNNNNN |

Similarly for table mysql.db:

SELECT host,db,user, 
       Grant_priv as gr,
       CONCAT(Select_priv, Lock_tables_priv) AS selock, 
       CONCAT(Insert_priv, Update_priv, Delete_priv, Create_priv, Drop_priv) AS modif, 
       CONCAT(References_priv, Index_priv, Alter_priv) AS ria, 
       CONCAT(Create_tmp_table_priv, Create_view_priv, Show_view_priv) AS views, 
       CONCAT(Create_routine_priv, Alter_routine_priv, Execute_priv) AS funcs 
       FROM db ORDER BY user, db, host;

Working example. Notes below.

class Animal {
    constructor(public name) {
    }

    move(meters) {
        alert(this.name + " moved " + meters + "m.");
    }
}

class Snake extends Animal {
    move() {
        alert(this.name + " is Slithering...");
        super.move(5);
    }
}

class Horse extends Animal {
    move() {
        alert(this.name + " is Galloping...");
        super.move(45);
    }
}

var sam = new Snake("Sammy the Python");
var tom: Animal = new Horse("Tommy the Palomino");

sam.move();
tom.move(34);

1. You don't need to manually assign the name to a public variable. Using public name in the constructor definition does this for you.

2. You don't need to call super(name) from the specialised classes.

3. Using this.name works.

Notes on use of super.

This is covered in more detail in section 4.9.2 of the language specification.

The behaviour of the classes inheriting from Animal is not dissimilar to the behaviour in other languages. You need to specify the super keyword in order to avoid confusion between a specialised function and the base class function. For example, if you called move() or this.move() you would be dealing with the specialised Snake or Horse function, so using super.move() explicitly calls the base class function.

There is no confusion of properties, as they are the properties of the instance. There is no difference between super.name and this.name - there is simply this.name. Otherwise you could create a Horse that had different names depending on whether you were in the specialized class or the base class.

If you just want to tack something on by hand, then the sed answer will work for you. If instead the text is in file(s) (say file1.txt and file2.txt):

Using Perl:

perl -e 'open(OUT, ">>", "outfile.txt"); print OUT while (<>);' file*.txt

N.B. while the >> may look like an indication of redirection, it is just the file open mode, in this case "append".

For me when I created a file and saved it as python file, I was getting this error during importing. I had to create a filename with the type ".py" , like filename.py and then save it as a python file. post trying to import the file worked for me.

ProgressDialog is deprecated from Android Oreo. Use ProgressBar instead

ProgressDialog progress = new ProgressDialog(this);
progress.setTitle("Loading");
progress.setMessage("Wait while loading...");
progress.setCancelable(false); // disable dismiss by tapping outside of the dialog
progress.show();
// To dismiss the dialog
progress.dismiss();

OR

ProgressDialog.show(this, "Loading", "Wait while loading...");

Read more here.

By the way, Spinner has a different meaning in Android. (It's like the select dropdown in HTML)

PROCESS="process name shown in ps -ef"
START_OR_STOP=1        # 0 = start | 1 = stop

MAX=30
COUNT=0

until [ $COUNT -gt $MAX ] ; do
        echo -ne "."
        PROCESS_NUM=$(ps -ef | grep "$PROCESS" | grep -v `basename $0` | grep -v "grep" | wc -l)
        if [ $PROCESS_NUM -gt 0 ]; then
            #runs
            RET=1
        else
            #stopped
            RET=0
        fi

        if [ $RET -eq $START_OR_STOP ]; then
            sleep 5 #wait...
        else
            if [ $START_OR_STOP -eq 1 ]; then
                    echo -ne " stopped"
            else
                    echo -ne " started"
            fi
            echo
            exit 0
        fi
        let COUNT=COUNT+1
done

if [ $START_OR_STOP -eq 1 ]; then
    echo -ne " !!$PROCESS failed to stop!! "
else
    echo -ne " !!$PROCESS failed to start!! "
fi
echo
exit 1

The Heap is divided into young and old generations as follows :

Young Generation: It is a place where an object lived for a short period and it is divided into two spaces:

• Eden Space: When object created using new keyword memory allocated on this space.
• Survivor Space (S0 and S1): This is the pool which contains objects which have survived after minor java garbage collection from Eden space.

Old Generation: This pool basically contains tenured and virtual (reserved) space and will be holding those objects which survived after garbage collection from the Young Generation.

• Tenured Space: This memory pool contains objects which survived after multiple garbage collection means an object which survived after garbage collection from Survivor space.

Explanation

Let's imagine our application has just started.

So at this point all three of these spaces are empty (Eden, S0, S1).

Whenever a new object is created it is placed in the Eden space.

When the Eden space gets full then the garbage collection process (minor GC) will take place on the Eden space and any surviving objects are moved into S0.

Our application then continues running add new objects are created in the Eden space the next time that the garbage collection process runs it looks at everything in the Eden space and in S0 and any objects that survive get moved into S1.

PS: Based on the configuration that how much time object should survive in Survivor space, the object may also move back and forth to S0 and S1 and then reaching the threshold objects will be moved to old generation heap space.

First off you can't have just a number for your id unless you are using the HTML5 DOCTYPE. Secondly, you need to either remove the # in each id or replace it with this:

$container.cycle(id.replace('#','')); 

Here is one way...

(Get-Process powershell | select -First 1).Path

Here is possibly a better way, as it returns the first hit on the path, just like if you had ran Powershell from a command prompt...

(Get-Command powershell.exe).Definition

To help guard against SQL injection, I normally try to use functions wherever possible. In this case, you could do:

...
SET @TableName = '<[db].><[schema].>tblEmployees'
SET @TableID   = OBJECT_ID(TableName) --won't resolve if malformed/injected.
...
SET @SQLQuery = 'SELECT * FROM ' + OBJECT_NAME(@TableID) + ' WHERE EmployeeID = @EmpID' 

For the Oracle 12.1 windows client, looking at the output from the TNSPING command seems to work:

With 32 bit installed on 64 bit OS:

C:>tnsping

TNS Ping Utility for 32-bit Windows: Version 12.1.0.2.0 - Production on 02-FEB-2 016 15:44:37

Copyright (c) 1997, 2014, Oracle. All rights reserved.

With 64 bit installed on 64 bit OS:

D:>tnsping

TNS Ping Utility for 64-bit Windows: Version 12.1.0.1.0 - Production on 02-FEB-2 016 16:00:23

Copyright (c) 1997, 2013, Oracle. All rights reserved.

An easier way is to use the material spinner library: https://github.com/jaredrummler/MaterialSpinner

first add to your project:

compile 'com.jaredrummler:material-spinner:1.2.4'

and use like this:

<com.jaredrummler.materialspinner.MaterialSpinner
    android:id="@+id/spinner"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"/>

and java code that you can add items in java so easy:

MaterialSpinner spinner = (MaterialSpinner) findViewById(R.id.spinner);
spinner.setItems("item 1", "item 2", "item 3", "item 4", "item 5");
spinner.setOnItemSelectedListener(new MaterialSpinner.OnItemSelectedListener<String>() {

  @Override public void onItemSelected(MaterialSpinner view, int position, long id, String item) {
    Snackbar.make(view, "Clicked " + item, Snackbar.LENGTH_LONG).show();
  }
});

In Oracle 12c you can also declare an identity column

CREATE TABLE identity_test_tab (
  id          NUMBER GENERATED BY DEFAULT ON NULL AS IDENTITY,
  description VARCHAR2(30)
);

examples & performance tests here ... where, is shorts, the conclusion is that the direct use of the sequence or the new identity column are much faster than the triggers.

Try this one:

echo date('m/d/Y H:i:s', 1541843467);

You can use the spring-boot-starter dependency. This will not have the web stuff.

<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter</artifactId>
</dependency>

If you try to use "ModelState.Remove" or "ModelState["Prop"].Errors.Clear()" the "ModelState.IsValid" stil returns false.

Why not just removing the default "Required" Annotation from Model and make your custom validation before the "ModelState.IsValid" on Controller 'Post' action? Like this:

if (!String.IsNullOrEmpty(yourClass.Property1) && String.IsNullOrEmpty(yourClass.dependantProperty))            
            ModelState.AddModelError("dependantProperty", "It´s necessary to select some 'dependant'.");

have a look at the below code snippet.

@RequestMapping(value = "edit.htm", method = RequestMethod.GET) 
    public ModelAndView edit(@RequestParam("id") String id) throws Exception {
        ModelMap modelMap = new ModelMap();
        modelMap.addAttribute("user", userinfoDao.findById(id));
        return new ModelAndView("edit", modelMap);      
    }

If you want the complete project to see how it works then download it from below link:-

UserInfo Project on GitLab

1. go to apple icon --> system preferences
2. open Mysql
3. in instances you will see "initialize Database"
4. click on that
5. you will be asked to set password for root --> set a strong password there
6. use that password to login in mysql from next time

Hope this helps.

I think you've got your understanding of the two properties off a little. Border affects the outside edge of the element, making the element different in size. Outline will not change the size or position of the element (takes up no space) and goes outside the border. From your description you want to use the border property.

Look at the simple example below in your browser:

<div style="height: 100px; width: 100px; background: black; color: white; outline: thick solid #00ff00">SOME TEXT HERE</div>_x000D_
_x000D_
<div style="height: 100px; width: 100px; background: black; color: white; border-left: thick solid #00ff00">SOME TEXT HERE</div>

Notice how the border pushes the bottom div over, but the outline doesn't move the top div and the outline actually overlaps the bottom div.

You can read more about it here:
Border
Outline

The Set interface itself does not stipulate any particular order. The SortedSet does however.

variable declares and call like this in a class

class X {
    var x: Int = 3

}
var y = X()
print("value of x is: ", y.x)

//value of x is:  3

now you want to program to make the default value of x more than or equal to 3. Now take the hypothetical case if x is less than 3, your program will fail. so, you want people to either put 3 or more than 3. Swift got it easy for you and it is important to understand this bit-advance way of dating the variable value because they will extensively use in iOS development. Now let's see how get and set will be used here.

class X {
    var _x: Int = 3
    var x: Int {
        get {
            return _x
        }
        set(newVal) {  //set always take 1 argument
            if newVal >= 3 {
             _x = newVal //updating _x with the input value by the user
            print("new value is: ", _x)
            }
            else {
                print("error must be greater than 3")
            }
        }
    }
}
let y = X()
y.x = 1
print(y.x) //error must be greater than 3
y.x = 8 // //new value is: 8

if you still have doubts, just remember, the use of get and set is to update any variable the way we want it to be updated. get and set will give you better control to rule your logic. Powerful tool hence not easily understandable.

Most of bootstrap datepickers as I write this answer are rather buggy when included in Bootstrap 4. In my view the least code adding solution is a jQuery plugin. I used this one https://plugins.jquery.com/datetimepicker/ - you can see its usage here: https://xdsoft.net/jqplugins/datetimepicker/ It sure is not as smooth as the whole BS interface, but it only requires its css and js files along with jQuery which is already included in bootstrap.

1 line will do all

For message queue

ipcs -q | sed "$ d; 1,2d" |  awk '{ print "Removing " $2; system("ipcrm -q " $2) }'

ipcs -q will give the records of message queues

sed "$ d; 1,2d " will remove last blank line ("$ d") and first two header lines ("1,2d")

awk will do the rest i.e. printing and removing using command "ipcrm -q" w.r.t. the value of column 2 (coz $2)

Below code can be used to search a particular string in Oracle clob column

select *  
from RLOS_BINARY_BP
where dbms_lob.instr(DED_ENQ_XML,'2003960067') > 0;

where RLOS_BINARY_BP is table name and DED_ENQ_XML is column name (with datatype as CLOB) of Oracle database.

Looking at most of the replies, they seem overly complicated. Angular has built in mechanisms to unregister.

Use the deregistration function returned by $on :

// Register and get a handle to the listener
var listener = $scope.$on('someMessage', function () {
    $log.log("Message received");
});

// Unregister
$scope.$on('$destroy', function () {
    $log.log("Unregistering listener");
    listener();
});

How to handle authentication in a RESTful Client-Server architecture is a matter of debate.

Commonly, it can be achieved, in the SOA over HTTP world via:

• HTTP basic auth over HTTPS;
• Cookies and session management;
• Token in HTTP headers (e.g. OAuth 2.0 + JWT);
• Query Authentication with additional signature parameters.

You'll have to adapt, or even better mix those techniques, to match your software architecture at best.

Each authentication scheme has its own PROs and CONs, depending on the purpose of your security policy and software architecture.

HTTP basic auth over HTTPS

This first solution, based on the standard HTTPS protocol, is used by most web services.

GET /spec.html HTTP/1.1
Host: www.example.org
Authorization: Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ==

It's easy to implement, available by default on all browsers, but has some known drawbacks, like the awful authentication window displayed on the Browser, which will persist (there is no LogOut-like feature here), some server-side additional CPU consumption, and the fact that the user-name and password are transmitted (over HTTPS) into the Server (it should be more secure to let the password stay only on the client side, during keyboard entry, and be stored as secure hash on the Server).

We may use Digest Authentication, but it requires also HTTPS, since it is vulnerable to MiM or Replay attacks, and is specific to HTTP.

Session via Cookies

To be honest, a session managed on the Server is not truly Stateless.

One possibility could be to maintain all data within the cookie content. And, by design, the cookie is handled on the Server side (Client, in fact, does even not try to interpret this cookie data: it just hands it back to the server on each successive request). But this cookie data is application state data, so the client should manage it, not the server, in a pure Stateless world.

GET /spec.html HTTP/1.1
Host: www.example.org
Cookie: theme=light; sessionToken=abc123

The cookie technique itself is HTTP-linked, so it's not truly RESTful, which should be protocol-independent, IMHO. It is vulnerable to MiM or Replay attacks.

Granted via Token (OAuth2)

An alternative is to put a token within the HTTP headers so that the request is authenticated. This is what OAuth 2.0 does, for instance. See the RFC 6749:

 GET /resource/1 HTTP/1.1
 Host: example.com
 Authorization: Bearer mF_9.B5f-4.1JqM

In short, this is very similar to a cookie and suffers to the same issues: not stateless, relying on HTTP transmission details, and subject to a lot of security weaknesses - including MiM and Replay - so is to be used only over HTTPS. Typically, a JWT is used as a token.

Query Authentication

Query Authentication consists in signing each RESTful request via some additional parameters on the URI. See this reference article.

It was defined as such in this article:

All REST queries must be authenticated by signing the query parameters sorted in lower-case, alphabetical order using the private credential as the signing token. Signing should occur before URL encoding the query string.

This technique is perhaps the more compatible with a Stateless architecture, and can also be implemented with a light session management (using in-memory sessions instead of DB persistence).

For instance, here is a generic URI sample from the link above:

GET /object?apiKey=Qwerty2010

should be transmitted as such:

GET /object?timestamp=1261496500&apiKey=Qwerty2010&signature=abcdef0123456789

The string being signed is /object?apikey=Qwerty2010&timestamp=1261496500 and the signature is the SHA256 hash of that string using the private component of the API key.

Server-side data caching can be always available. For instance, in our framework, we cache the responses at the SQL level, not at the URI level. So adding this extra parameter doesn't break the cache mechanism.

See this article for some details about RESTful authentication in our client-server ORM/SOA/MVC framework, based on JSON and REST. Since we allow communication not only over HTTP/1.1, but also named pipes or GDI messages (locally), we tried to implement a truly RESTful authentication pattern, and not rely on HTTP specificity (like header or cookies).

Later Note: adding a signature in the URI can be seen as bad practice (since for instance it will appear in the http server logs) so it has to be mitigated, e.g. by a proper TTL to avoid replays. But if your http logs are compromised, you will certainly have bigger security problems.

In practice, the upcoming MAC Tokens Authentication for OAuth 2.0 may be a huge improvement in respect to the "Granted by Token" current scheme. But this is still a work in progress and is tied to HTTP transmission.

Conclusion

It's worth concluding that REST is not only HTTP-based, even if, in practice, it's also mostly implemented over HTTP. REST can use other communication layers. So a RESTful authentication is not just a synonym of HTTP authentication, whatever Google answers. It should even not use the HTTP mechanism at all but shall be abstracted from the communication layer. And if you use HTTP communication, thanks to the Let's Encrypt initiative there is no reason not to use proper HTTPS, which is required in addition to any authentication scheme.

If you mean the type of procedure you find in SQL Server, prior to 2010, you can't. If you want a query that accepts a parameter, you can use the query design window:

 PARAMETERS SomeParam Text(10);
 SELECT Field FROM Table
 WHERE OtherField=SomeParam

You can also say:

CREATE PROCEDURE ProcedureName
   (Parameter1 datatype, Parameter2 datatype) AS
   SQLStatement

From: http://msdn.microsoft.com/en-us/library/aa139977(office.10).aspx#acadvsql_procs

Note that the procedure contains only one statement.

Under Windows only: You may try to use ini_set() function^Docs for the SMTP^Docs and smtp_port^Docs settings:

ini_set('SMTP', 'mysmtphost'); 
ini_set('smtp_port', 25); 

You're looking for any class that implements the Queue interface, excluding PriorityQueue and PriorityBlockingQueue, which do not use a FIFO algorithm.

Probably a LinkedList using add (adds one to the end) and removeFirst (removes one from the front and returns it) is the easiest one to use.

For example, here's a program that uses a LinkedList to queue and retrieve the digits of PI:

import java.util.LinkedList;

class Test {
    public static void main(String args[]) {
        char arr[] = {3,1,4,1,5,9,2,6,5,3,5,8,9};
        LinkedList<Integer> fifo = new LinkedList<Integer>();

        for (int i = 0; i < arr.length; i++)
            fifo.add (new Integer (arr[i]));

        System.out.print (fifo.removeFirst() + ".");
        while (! fifo.isEmpty())
            System.out.print (fifo.removeFirst());
        System.out.println();
    }
} 

Alternatively, if you know you only want to treat it as a queue (without the extra features of a linked list), you can just use the Queue interface itself:

import java.util.LinkedList;
import java.util.Queue;

class Test {
    public static void main(String args[]) {
        char arr[] = {3,1,4,1,5,9,2,6,5,3,5,8,9};
        Queue<Integer> fifo = new LinkedList<Integer>();

        for (int i = 0; i < arr.length; i++)
            fifo.add (new Integer (arr[i]));

        System.out.print (fifo.remove() + ".");
        while (! fifo.isEmpty())
            System.out.print (fifo.remove());
        System.out.println();
    }
}

This has the advantage of allowing you to replace the underlying concrete class with any class that provides the Queue interface, without having to change the code too much.

The basic changes are to change the type of fifo to a Queue and to use remove() instead of removeFirst(), the latter being unavailable for the Queue interface.

Calling isEmpty() is still okay since that belongs to the Collection interface of which Queue is a derivative.

This is how you get unique from an array with two or more properties. The sort is vital and the key to getting it to work correctly. Otherwise you just get one item returned.

PowerShell Script:

$objects = @(
    [PSCustomObject] @{ Message = "1"; MachineName = "1" }
    [PSCustomObject] @{ Message = "2"; MachineName = "1" }
    [PSCustomObject] @{ Message = "3"; MachineName = "1" }
    [PSCustomObject] @{ Message = "4"; MachineName = "1" }
    [PSCustomObject] @{ Message = "5"; MachineName = "1" }
    [PSCustomObject] @{ Message = "1"; MachineName = "2" }
    [PSCustomObject] @{ Message = "2"; MachineName = "2" }
    [PSCustomObject] @{ Message = "3"; MachineName = "2" }
    [PSCustomObject] @{ Message = "4"; MachineName = "2" }
    [PSCustomObject] @{ Message = "5"; MachineName = "2" }
    [PSCustomObject] @{ Message = "1"; MachineName = "1" }
    [PSCustomObject] @{ Message = "2"; MachineName = "1" }
    [PSCustomObject] @{ Message = "3"; MachineName = "1" }
    [PSCustomObject] @{ Message = "4"; MachineName = "1" }
    [PSCustomObject] @{ Message = "5"; MachineName = "1" }
    [PSCustomObject] @{ Message = "1"; MachineName = "2" }
    [PSCustomObject] @{ Message = "2"; MachineName = "2" }
    [PSCustomObject] @{ Message = "3"; MachineName = "2" }
    [PSCustomObject] @{ Message = "4"; MachineName = "2" }
    [PSCustomObject] @{ Message = "5"; MachineName = "2" }
)

Write-Host "Sorted on both properties with -Unique" -ForegroundColor Yellow
$objects | Sort-Object -Property Message,MachineName -Unique | Out-Host

Write-Host "Sorted on just Message with -Unique" -ForegroundColor Yellow
$objects | Sort-Object -Property Message -Unique | Out-Host

Write-Host "Sorted on just MachineName with -Unique" -ForegroundColor Yellow
$objects | Sort-Object -Property MachineName -Unique | Out-Host

Output:

Sorted on both properties with -Unique

Message MachineName
------- -----------
1       1          
1       2          
2       1          
2       2          
3       1          
3       2          
4       1          
4       2          
5       1          
5       2          


Sorted on just Message with -Unique

Message MachineName
------- -----------
1       1          
2       1          
3       1          
4       1          
5       2          


Sorted on just MachineName with -Unique

Message MachineName
------- -----------
1       1          
3       2  

Source: https://powershell.org/forums/topic/need-to-unique-based-on-multiple-properties/

I'm not sure that I understood your problem, but I think you can divide loop. On the part of the function and the part without it and save the two loops.

You need to use bindValue, not bindParam

bindParam takes a variable by reference, and doesn't pull in a value at the time of calling bindParam. I found this in a comment on the PHP docs:

bindValue(':param', null, PDO::PARAM_INT);

P.S. You may be tempted to do this bindValue(':param', null, PDO::PARAM_NULL); but it did not work for everybody (thank you Will Shaver for reporting.)

Just a few minutes ago i was facing the same problem. I got the problem that is after just placing your jQuery start the other jQuery scripting. After all it will work fine.

Using javascript, you can set tooltips for all the images on the page.

<!DOCTYPE html>
<html>
    <body>
    <img src="http://sushmareddy.byethost7.com/dist/img/buffet.png" alt="Food">
    <img src="http://sushmareddy.byethost7.com/dist/img/uthappizza.png" alt="Pizza">
     <script>
     //image objects
     var imageEls = document.getElementsByTagName("img");
     //Iterating
     for(var i=0;i<imageEls.length;i++){
        imageEls[i].title=imageEls[i].alt;
        //OR
        //imageEls[i].title="Title of your choice";
     }
        </script>
    </body>
</html>

Use vscode-solution-explorer extension:

This extension adds a Visual Studio Solution File explorer panel in Visual Studio Code. Now you can navigate into your solution following the original Visual Studio structure.

https://github.com/fernandoescolar/vscode-solution-explorer

Thanks @fernandoescolar

If Character.isLetter(ch) looks a bit wordy/ugly you can use a static import.

import static java.lang.Character.*;


if(isLetter(ch)) {

} else if(isDigit(ch)) {

} 

It's really simple. Let me divide this process into two simple steps.

1. On the html template you will declare name attribute for username and password like this:

<form method="POST">
<input type="text" name="user_name"></input>
<input type="text" name="password"></input>
</form>

2. Then, modify your code like this:

from flask import request

@app.route('/my-route', methods=['POST'])
# you should always parse username and 
# password in a POST method not GET
def my_route():
    username = request.form.get("user_name")
    print(username)
    password = request.form.get("password")
    print(password)
    #now manipulate the username and password variables as you wish
    #Tip: define another method instead of methods=['GET','POST'], if you want to  
    # render the same template with a GET request too

Are you using position: relative?

Try to set position: relative and then z-index because you want this div has a z-index in relation with other div.

By the way, your browser is important to check if it working or not. Neither IE or Firefox is a good one.

Bootstrap uses CSS3 transitions so progress bars are automatically animated when you set the width of .bar trough javascript / jQuery.

http://jsfiddle.net/3j5Je/ ..see?

For Spring 5.2+ this works for me:

@PostMapping("/foo")
ResponseEntity<Void> foo(@PathVariable UUID fooId) {
    return fooService.findExam(fooId)
            .map(uri -> ResponseEntity.noContent().<Void>build())
            .orElse(ResponseEntity.notFound().build());
}

Simple date example using $filter in a controller would be:

var myDate = new Date();
$scope.dateAsString = $filter('date')(myDate, "yyyy-MM-dd"); 

As explained here - https://stackoverflow.com/a/20131782/262140

With Promises you can simplify it like this. Loader function:

  const loadCDN = src =>
    new Promise((resolve, reject) => {
      if (document.querySelector(`head > script[src="${src}"]`) !== null) return resolve()
      const script = document.createElement("script")
      script.src = src
      script.async = true
      document.head.appendChild(script)
      script.onload = resolve
      script.onerror = reject
    })

Usage (async/await):

await loadCDN("https://.../script.js")

Usage (Promise):

loadCDN("https://.../script.js").then(res => {}).catch(err => {})

NOTE: there was one similar solution but it doesn't check if the script is already loaded and loads the script each time. This one checks src property.

if you want to choose upon which giant's shoulders you will stand

here is a link to generate a short list of options available to npm; it filters on the keywords unused packages

https://www.npmjs.com/search?q=unused%20packages

Another product that can handle this elegantly is SmartAssembly, at SmartAssembly.com. This product will, in addition to merging all dependencies into a single DLL, (optionally) obfuscate your code, remove extra meta-data to reduce the resulting file size, and can also actually optimize the IL to increase runtime performance.

There is also some kind of global exception handling/reporting feature it adds to your software (if desired) that could be useful. I believe it also has a command-line API so you can make it part of your build process.

Well, you can just put multiple "where" clauses in directly, but I don't think you want to. Multiple "where" clauses ends up with a more restrictive filter - I think you want a less restrictive one. I think you really want:

DataTable tempData = (DataTable)grdUsageRecords.DataSource;
var query = from r in tempData.AsEnumerable()
            where r.Field<string>("UserName") != "XXXX" &&
                  r.Field<string>("UserName") != "YYYY"
            select r;

DataTable newDT = query.CopyToDataTable();

Note the && instead of ||. You want to select the row if the username isn't XXXX and the username isn't YYYY.

EDIT: If you have a whole collection, it's even easier. Suppose the collection is called ignoredUserNames:

DataTable tempData = (DataTable)grdUsageRecords.DataSource;
var query = from r in tempData.AsEnumerable()
            where !ignoredUserNames.Contains(r.Field<string>("UserName"))
            select r;

DataTable newDT = query.CopyToDataTable();

Ideally you'd want to make this a HashSet<string> to avoid the Contains call taking a long time, but if the collection is small enough it won't make much odds.

You need to stringify the json, not calling toString

var buf = Buffer.from(JSON.stringify(obj));

And for converting string to json obj :

var temp = JSON.parse(buf.toString());

Try This

 $( "#email,#confirmEmail " ).on( "copy cut paste drop", function() {
                return false;
        });

You can use the Conditional Formatting to replace text and NOT effect any formulas. Simply go to the Rule's format where you will see Number, Font, Border and Fill.
Go to the Number tab and select CUSTOM. Then simply type where it says TYPE: what you want to say in QUOTES.

Example.. "OTHER"

One way I've found to do this is to create an img tag and set the src attribute to the file you are looking for. The onload or onerror of the img element will fire based on whether the file exists. You can't load any data using this method, but you can determine if a particular file exists or not.

The previous answers are correct but remember to use the name attribute in the input fields (html form) or you won't get anything. Example:

<input type="text" id="username" /> <!-- won't work --> <input type="text" name="username" /> <!-- will work --> <input type="text" name="username" id="username" /> <!-- will work too -->

All this code is HTML valid, but using getParameter(java.lang.String) you will need the name attribute been set in all parameters you want to receive.

So many solutions.
But I still think there is room for improvement.

Advantages:

• very compact code
• works with any font size
  (no absolute pixel values contained)
• aligns rows perfectly
  (no slight shift between first line and following lines)

ul {_x000D_
 position: relative;_x000D_
 list-style: none;_x000D_
 margin-left: 0;_x000D_
 padding-left: 1.2em;_x000D_
}_x000D_
ul li:before {_x000D_
 content: "+";_x000D_
 position: absolute;_x000D_
 left: 0;_x000D_
}

<ul>_x000D_
  <li>Curabitur non nulla sit amet nisl tempus convallis quis ac lectus. Vestibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia Curae; Donec velit neque, auctor sit amet aliquam vel, ullamcorper sit amet ligula. Pellentesque in ipsum id orci porta dapibus.</li>_x000D_
  <li>Nulla porttitor accumsan tincidunt. Mauris blandit aliquet elit, eget tincidunt nibh pulvinar a. Aliquet quam id dui posuere blandit. Curabitur non nulla sit amet nisl tempus convallis quis ac lectus.</li>_x000D_
</ul>

for completeness: if you created your own subclass of UITableViewCell you can implement the - (void)setSelected:(BOOL)selected animated:(BOOL)animated method, and set the background color of some view you added in the content view. (if that is the case) or of the contentView itself (if it is not covered by one of your own views.

- (void)setSelected:(BOOL)selected animated:(BOOL)animated
{
    if(selected) {
        self.contentView.backgroundColor = UIColor.blueColor;
    } else {
        self.contentView.backgroundColor = UIColor.whiteColor;
    }
}

(did not use ? to fit the small width of source code DIV's :)

this approach has two advantages over using selectedBackgroundView, it uses less memory, and slightly less CPU, not that u would even notice unless u display hundreds of cells.

Add semi-colons ; to the end of the function calls in order for them both to work.

 <input id="btn" type="button" value="click" onclick="pay(); cls();"/>

I don't believe the last one is required but hey, might as well add it in for good measure.

Here is a good reference from SitePoint http://reference.sitepoint.com/html/event-attributes/onclick

Although, as mentioned, you could add a second parameter here to indicate you want an array returned:

$array = json_decode($json, true);

Many people might prefer to cast the results instead:

$array = (array)json_decode($json);

It might be more clear to read.

The following seems to work for my use cases:

Examples

$ tern 1 YES NO                                                                             
YES
    
$ tern 0 YES NO                                                                             
NO
    
$ tern 52 YES NO                                                                            
YES
    
$ tern 52 YES NO 52                                                                         
NO

and can be used in a script like so:

RESULT=$(tern 1 YES NO)
echo "The result is $RESULT"

tern

function show_help()
{
  echo ""
  echo "usage: BOOLEAN VALUE_IF_TRUE VALUE_IF_FALSE {FALSE_VALUE}"
  echo ""
  echo "e.g. "
  echo ""
  echo "tern 1 YES NO                            => YES"
  echo "tern 0 YES NO                            => NO"
  echo "tern "" YES NO                           => NO"
  echo "tern "ANY STRING THAT ISNT 1" YES NO     => NO"
  echo "ME=$(tern 0 YES NO)                      => ME contains NO"
  echo ""

  exit
}

if [ "$1" == "help" ]
then
  show_help
fi
if [ -z "$3" ]
then
  show_help
fi

# Set a default value for what is "false" -> 0
FALSE_VALUE=${4:-0}

function main
{
  if [ "$1" == "$FALSE_VALUE" ]; then
    echo $3
    exit;
  fi;

  echo $2
}

main "$1" "$2" "$3"

Here's a dynamic resize of iframe include way, with some delayed rerender on resize event:

function _facebook() {

    var parent = document.getElementById('facebook');
    var width = (window.innerWidth > 540) ? 500 : window.innerWidth - 40;
    if (parent.firstChild && parent.firstChild.width == width) { return; }
    var url = 'https://www.facebook.com/plugins/page.php?href=YOUR_FACEBOOK_PAGE_URL&tabs=messages&width='+width+'&height=500&small_header=false&adapt_container_width=true&hide_cover=false&show_facepile=true&appId=YOUR_APP_ID';
    var i = document.createElement('iframe');
    i.src = url;
    i.width = width;
    i.height = 500;
    i.style = 'border:none;overflow:hidden';
    i.scrolling = "no";
    i.frameborder = "0";
    i.allowTransparency = "true";
    while (parent.firstChild) { parent.removeChild(parent.firstChild); }
    parent.appendChild(i);

}

_facebook();

$(window).resize(function() {
    clearTimeout(window.resizedFinished);
    window.resizedFinished = setTimeout(function(){
        _facebook();
    }, 250);
});

Considering user also want to edit their previous input,

<select name="title">
  @foreach ($titles as $key => $value)
    <option value="{{$value->id}}" {{(old('title', $user->title_id) == $value->id ? 'selected' : '')}} > {{$value->name}} </option>
  @endforeach
</select>

old('title', $user->title_id) returns user saved title_id first time, if validation fails it returns user-selected title_id. Then if it is match with current option id, it is being selected.

For systems without "dmesg -T" such as RHEL/CentOS 6, I liked the "dmesg_with_human_timestamps" function provided by lucas-cimon earlier. It has a bit of trouble with some of our boxes with large uptime though. Turns out that kernel timestamps in dmesg are derived from an uptime value kept by individual CPUs. Over time this gets out of sync with the real time clock. As a result, the most accurate conversion for recent dmesg entries will be based on the CPU clock rather than /proc/uptime. For example, on a particular CentOS 6.6 box here:

# grep "\.clock" /proc/sched_debug  | head -1
  .clock                         : 32103895072.444568
# uptime
 15:54:05 up 371 days, 19:09,  4 users,  load average: 3.41, 3.62, 3.57
# cat /proc/uptime
32123362.57 638648955.00

Accounting for the CPU uptime being in milliseconds, there's an offset of nearly 5 1/2 hours here. So I revised the script and converted it to native bash in the process:

dmesg_with_human_timestamps () {
    FORMAT="%a %b %d %H:%M:%S %Y"

    now=$(date +%s)
    cputime_line=$(grep -m1 "\.clock" /proc/sched_debug)

    if [[ $cputime_line =~ [^0-9]*([0-9]*).* ]]; then
        cputime=$((BASH_REMATCH[1] / 1000))
    fi

    dmesg | while IFS= read -r line; do
        if [[ $line =~ ^\[\ *([0-9]+)\.[0-9]+\]\ (.*) ]]; then
            stamp=$((now-cputime+BASH_REMATCH[1]))
            echo "[$(date +"${FORMAT}" --date=@${stamp})] ${BASH_REMATCH[2]}"
        else
            echo "$line"
        fi
    done
}

alias dmesgt=dmesg_with_human_timestamps

inspired by @SteveLazaridis's answer, which would fail, here is a POSIX shell function - just copy and paste into a file named cpx in yout $PATH and make it executible (chmod a+x cpr). [Source is now maintained in my GitLab.

#!/bin/sh

# usage: cpx [-n|--dry-run] "from_path" "to_path" "newline_separated_exclude_list"
# limitations: only excludes from "from_path", not it's subdirectories

cpx() {
# run in subshell to avoid collisions
  (_CopyWithExclude "$@")
}

_CopyWithExclude() {
  case "$1" in
    -n|--dry-run) { DryRun='echo'; shift; } ;;
  esac

  from="$1"
  to="$2"
  exclude="$3"

  $DryRun mkdir -p "$to"

  if [ -z "$exclude" ]; then
      cp "$from" "$to"
      return
  fi

  ls -A1 "$from" \
    | while IFS= read -r f; do
        unset excluded
        if [ -n "$exclude" ]; then
          for x in $(printf "$exclude"); do
          if [ "$f" = "$x" ]; then
              excluded=1
              break
          fi
          done
        fi
        f="${f#$from/}"
        if [ -z "$excluded" ]; then
          $DryRun cp -R "$f" "$to"
        else
          [ -n "$DryRun" ] && echo "skip '$f'"
        fi
      done
}

# Do not execute if being sourced
[ "${0#*cpx}" != "$0" ] && cpx "$@"

Example usage

EXCLUDE="
.git
my_secret_stuff
"
cpr "$HOME/my_stuff" "/media/usb" "$EXCLUDE"

supposing you have a function:

var fetchPage(page, callback) {
   ....
   request(uri, function (error, response, body) {
        ....
        if (something_good) {
          callback(true, page+1);
        } else {
          callback(false);
        }
        .....
   });


};

you can make use of callbacks like this:

fetchPage(1, x = function(next, page) {
if (next) {
    console.log("^^^ CALLBACK -->  fetchPage: " + page);
    fetchPage(page, x);
}
});

The primary flag seems to only work for vagrant ssh for me.

In the past I have used the following method to hack around the issue.

# stage box intended for configuration closely matching production if ARGV[1] == 'stage'     config.vm.define "stage" do |stage|         box_setup stage, \         "10.9.8.31", "deploy/playbook_full_stack.yml", "deploy/hosts/vagrant_stage.yml"     end end 

To check if command line tools are installed run:

xcode-select --version

// if installed you will see the below with the version found in your system
// xcode-select version 1234.

If command line tools are not installed run:

xcode-select --install

function Do-SendKeys {
    param (
        $SENDKEYS,
        $WINDOWTITLE
    )
    $wshell = New-Object -ComObject wscript.shell;
    IF ($WINDOWTITLE) {$wshell.AppActivate($WINDOWTITLE)}
    Sleep 1
    IF ($SENDKEYS) {$wshell.SendKeys($SENDKEYS)}
}
Do-SendKeys -WINDOWTITLE Print -SENDKEYS '{TAB}{TAB}'
Do-SendKeys -WINDOWTITLE Print
Do-SendKeys -SENDKEYS '%{f4}'

See https://developer.mozilla.org/en/DOM/document.cookie for more documentation:

 setItem: function (sKey, sValue, vEnd, sPath, sDomain, bSecure) {  
     if (!sKey || /^(?:expires|max\-age|path|domain|secure)$/.test(sKey)) { return; }  
     var sExpires = "";  
     if (vEnd) {  
       switch (typeof vEnd) {  
         case "number": sExpires = "; max-age=" + vEnd; break;  
         case "string": sExpires = "; expires=" + vEnd; break;  
         case "object": if (vEnd.hasOwnProperty("toGMTString")) { sExpires = "; expires=" + vEnd.toGMTString(); } break;  
       }  
     }  
     document.cookie = escape(sKey) + "=" + escape(sValue) + sExpires + (sDomain ? "; domain=" + sDomain : "") + (sPath ? "; path=" + sPath : "") + (bSecure ? "; secure" : "");  
   }

Great anwser from Sameer and Abel Terefe. However, when you remove a view, in my option, you want to remove a view with certain id. Here is how do you do that.

1, give the view an id when you create it:

_textView.setId(index);

2, remove the view with the id:

removeView(findViewById(index));

I as well wrote my own bash script to dump the Java version required by all the jars passed at the command line... Mine is a bit rough, but works for me ;-)

example usage

$ jar_dump_version_of_jvm_required.sh *.jar
JVM VERSION REQUIRED: 46.0, /private/tmp/jars/WEB-INF/lib/json-simple-1.1.jar
JVM VERSION REQUIRED: 49.0, /private/tmp/jars/WEB-INF/lib/json-smart-1.1.1.jar
JVM VERSION REQUIRED: 50.0, /private/tmp/jars/WEB-INF/lib/jsontoken-1.0.jar
JVM VERSION REQUIRED: 50.0, /private/tmp/jars/WEB-INF/lib/jsr166y-1.7.0.jar

jar_dump_version_of_jvm_required.sh

#!/bin/bash

DIR=$(PWD)
function show_help()
{
  ME=$(basename $0)
  IT=$(cat <<EOF

  Dumps the version of the JVM required to run the classes in a jar file

  usage: $ME JAR_FILE

  e.g. 

  $ME myFile.jar    ->  VERSION: 50.0     myFile.jar

  Java versions are:
  54 = Java 10
  53 = Java 9
  52 = Java 8
  51 = Java 7
  50 = Java 6
  49 = Java 5
  48 = Java 1.4
  47 = Java 1.3
  46 = Java 1.2
  45.3 = Java 1.1

EOF
  )
  echo "$IT"
  exit
}

if [ "$1" == "help" ]
then
  show_help
fi
if [ -z "$1" ]
then
  show_help
fi

function unzipJarToTmp()
{
  JAR=$1
  CLASS_FILE=$(jar -tf "$JAR" | grep \.class$ | grep -v '\$' | head -n1 | awk '{print $NF}')
  OUT_FILE="$CLASS_FILE"
  #echo "J=$JAR C=$CLASS_FILE O=$OUT_FILE"
  jar xf "$JAR" "$CLASS_FILE"

  MAJOR=$(javap -v "$OUT_FILE" 2>&1 | grep major | awk -F' ' '{print $3'})
  MINOR=$(javap -v "$OUT_FILE" 2>&1 | grep minor | awk -F' ' '{print $3'})
  if [ -z "$MAJOR" ]
  then
    echo "JVM VERSION REQUIRED: NA as no classes in $JAR"
  else
    echo "JVM VERSION REQUIRED: $MAJOR.$MINOR, $JAR"
  fi
}

# loop over cmd line args
for JAR in "$@"
do
  cd "$DIR"
  JAR_UID=$(basename "$JAR" | sed s/.jar//g)
  TMPDIR=/tmp/jar_dump/$JAR_UID/
  mkdir -p "$TMPDIR"
  JAR_ABS_PATH=$(realpath $JAR)

  cd "$TMPDIR"

  #echo "$JAR_ABS_PATH"
  unzipJarToTmp "$JAR_ABS_PATH"
  #sleep 2
done

 Array.Resize(ref youur_array_name, your_array_name.Length + 1);
 your_array_name[your_array_name.Length - 1] = "new item";

I got this error when unbeknownst to me, someone else was connected to the database in another SSMS session. After I signed them out the restore completed successfully.

What if you proceed step by step: you first locate the global maximum, process if needed the surrounding points given their value, then set the found region to zero, and repeat for the next one.

I should this On Windows, environment variable expansion is %BUILD_NUMBER%

You copied using Cells.
If so, no need to PasteSpecial since you are copying data at exactly the same format.
Here's your code with some fixes.

Dim x As Workbook, y As Workbook
Dim ws1 As Worksheet, ws2 As Worksheet

Set x = Workbooks.Open("path to copying book")
Set y = Workbooks.Open("path to pasting book")

Set ws1 = x.Sheets("Sheet you want to copy from")
Set ws2 = y.Sheets("Sheet you want to copy to")

ws1.Cells.Copy ws2.cells
y.Close True
x.Close False

If however you really want to paste special, use a dynamic Range("Address") to copy from.
Like this:

ws1.Range("Address").Copy: ws2.Range("A1").PasteSpecial xlPasteValues
y.Close True
x.Close False

Take note of the : colon after the .Copy which is a Statement Separating character.
Using Object.PasteSpecial requires to be executed in a new line.
Hope this gets you going.

Edit: This answer is was posted during the Laravel 4 beta, when Str class did not exist. There is now a better way to do it in Laravel 4 - which is Dustin's answer below. I cannot delete this answer due to SO rules (it wont let me)

Blade itself does not have that functionality.

In Laravel 3 there was the Str class - which you could do:

{{ Str::limit($myVariable, 10) }}

At this stage I do not believe the Str class is in Laravel 4 - but here is a port of it that you can include in composer to add to your own project

This answer is late but might be helpful to anyone who arrives from Google: You might well need to declare

<item name="android:windowActionBar">true</item>

in your styles.xml. It seems false can be the default. You also need to be on API 11 or higher.

More details can be found in the documentation here. Specifically, quote:

Tip: If you have a custom activity theme in which you'd like to remove the action bar, set the android:windowActionBar style property to false. However, if you remove the action bar using a theme, then the window will not allow the action bar at all, so you cannot add it later—calling getActionBar() will return null.

I just wanted to expand on the accepted answer with support for Internet Explorer (most modern versions, anyways), and to tidy up the code using jQuery:

$(document).ready(function() {
    saveFile("Example.txt", "data:attachment/text", "Hello, world.");
});

function saveFile (name, type, data) {
    if (data !== null && navigator.msSaveBlob)
        return navigator.msSaveBlob(new Blob([data], { type: type }), name);
    var a = $("<a style='display: none;'/>");
    var url = window.URL.createObjectURL(new Blob([data], {type: type}));
    a.attr("href", url);
    a.attr("download", name);
    $("body").append(a);
    a[0].click();
    window.URL.revokeObjectURL(url);
    a.remove();
}

Here is an example Fiddle. Godspeed.

I too have had this problem but solved it without script and only using CSS. I start by following the recommended padding-top for a fixed menu by setting of 60px described on the Bootstrap website. Then I added three media tags that resize the padding at the cutoff points where my menu also resizes.

<style>      
    body{
        padding-top:60px;
    }
    /* fix padding under menu after resize */
    @media screen and (max-width: 767px) {
        body { padding-top: 60px; }
    }
    @media screen and (min-width:768px) and (max-width: 991px) {
        body { padding-top: 110px; }
    }
    @media screen and (min-width: 992px) {
        body { padding-top: 60px; }
    }
</style>

One note, when my menu width is between 768 and 991, the menu logo in my layout plus the <li> options cause the menu to wrap to two lines. Therefore, I had to adjust the padding-top to prevent the menu from covering the content, hence 110px.

Hope this helps...

Additionally to the solutions that were suggested in sibling comments, you may change your testing approach a little bit and test not the whole page all at once (with a deep children components tree), but do an isolated component testing. This will simplify testing of onClick() and similar events (see example below).

The idea is to test only one component at a time and not all of them together. In this case all children components will be mocked using the jest.mock() function.

Here is an example of how the onClick() event may be tested in an isolated SearchForm component using Jest and react-test-renderer.

import React from 'react';
import renderer from 'react-test-renderer';
import { SearchForm } from '../SearchForm';

describe('SearchForm', () => {
  it('should fire onSubmit form callback', () => {
    // Mock search form parameters.
    const searchQuery = 'kittens';
    const onSubmit = jest.fn();

    // Create test component instance.
    const testComponentInstance = renderer.create((
      <SearchForm query={searchQuery} onSearchSubmit={onSubmit} />
    )).root;

    // Try to find submit button inside the form.
    const submitButtonInstance = testComponentInstance.findByProps({
      type: 'submit',
    });
    expect(submitButtonInstance).toBeDefined();

    // Since we're not going to test the button component itself
    // we may just simulate its onClick event manually.
    const eventMock = { preventDefault: jest.fn() };
    submitButtonInstance.props.onClick(eventMock);

    expect(onSubmit).toHaveBeenCalledTimes(1);
    expect(onSubmit).toHaveBeenCalledWith(searchQuery);
  });
});

//R stands for ROW and C stands for COLUMN:

//i stands for ROW and j stands for COLUMN:

#include<stdio.h>

int main(){

    int M[100][100];

    int R,C,i,j;

    printf("Please enter how many rows you want:\n");

    scanf("%d",& R);

    printf("Please enter how column you want:\n");

    scanf("%d",& C);

    printf("Please enter your matrix:\n");

    for(i = 0; i < R; i++){

        for(j = 0; j < C; j++){

            scanf("%d", &M[i][j]);

        }

        printf("\n");

    }
    for(i = 0; i < R; i++){

        for(j = 0; j < C; j++){

            printf("%d\t", M[i][j]);

        }
        printf("\n");

   }

   getch();

   return 0;
}

Debug Diagnostics Tool (DebugDiag) can be a lifesaver. It creates and analyze IIS crash dumps. I figured out my crash in minutes once I saw the call stack. https://support.microsoft.com/en-us/kb/919789

This function trims a string from left and right. Also it removes carriage returns from the string, an action which is not done by the LTRIM and RTRIM

IF OBJECT_ID(N'dbo.TRIM', N'FN') IS NOT NULL
    DROP FUNCTION dbo.TRIM;
GO
CREATE FUNCTION dbo.TRIM (@STR NVARCHAR(MAX)) RETURNS NVARCHAR(MAX)
BEGIN
    RETURN(LTRIM(RTRIM(REPLACE(REPLACE(@STR ,CHAR(10),''),CHAR(13),''))))
END;
GO

You can do this with the GetConnectionString extension-method:

string conString = Microsoft
   .Extensions
   .Configuration
   .ConfigurationExtensions
   .GetConnectionString(this.Configuration, "DefaultConnection");

System.Console.WriteLine(conString);

or with a structured-class for DI:

public class SmtpConfig
{
    public string Server { get; set; }
    public string User { get; set; }
    public string Pass { get; set; }
    public int Port { get; set; }
}

Startup:

public IConfigurationRoot Configuration { get; }


// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
    // http://developer.telerik.com/featured/new-configuration-model-asp-net-core/
    // services.Configure<SmtpConfig>(Configuration.GetSection("Smtp"));
    Microsoft.Extensions.DependencyInjection.OptionsConfigurationServiceCollectionExtensions.Configure<SmtpConfig>(services, Configuration.GetSection("Smtp"));

And then in the home-controller:

public class HomeController : Controller
{

    public SmtpConfig SmtpConfig { get; }
    public HomeController(Microsoft.Extensions.Options.IOptions<SmtpConfig> smtpConfig)
    {
        SmtpConfig = smtpConfig.Value;
    } //Action Controller


    public IActionResult Index()
    {
        System.Console.WriteLine(SmtpConfig);
        return View();
    }

with this in appsettings.json:

"ConnectionStrings": {
"DefaultConnection": "Server=(localdb)\\mssqllocaldb;Database=aspnet-WebApplica71d622;Trusted_Connection=True;MultipleActiveResultSets=true"
},

"Smtp": {
    "Server": "0.0.0.1",
    "User": "[email protected]",
    "Pass": "123456789",
    "Port": "25"
  }

To get the current time in the local timezone as a naive datetime object:

from datetime import datetime
naive_dt = datetime.now()

If it doesn't return the expected time then it means that your computer is misconfigured. You should fix it first (it is unrelated to Python).

To get the current time in UTC as a naive datetime object:

naive_utc_dt = datetime.utcnow()

To get the current time as an aware datetime object in Python 3.3+:

from datetime import datetime, timezone

utc_dt = datetime.now(timezone.utc) # UTC time
dt = utc_dt.astimezone() # local time

To get the current time in the given time zone from the tz database:

import pytz

tz = pytz.timezone('Europe/Berlin')
berlin_now = datetime.now(tz)

It works during DST transitions. It works if the timezone had different UTC offset in the past i.e., it works even if the timezone corresponds to multiple tzinfo objects at different times.

You should not write CSS rules for a child component elements in a parent component, since an Angular component is a self-contained entity which should explicitly declare what is available for the outside world. If child layout changes in the future, your styles for that child component elements scattered across other components' SCSS files could easily break, thus making your styling very fragile. That's what ViewEncapsulation is for in the case of CSS. Otherwise, it would be the same if you could assign values to private fields of some class from any other class in Object Oriented Programming.

Therefore, what you should do is to define a set of classes you could apply to the child host element and implement how the child responds to them.

Technically, it could be done as follows:

// child.component.html:
<span class="label-1"></span>

// child.component.scss:
:host.child-color-black {
    .label-1 {
        color: black;
    }
}

:host.child-color-blue {
    .label-1 {
        color: blue ;
    }
}

// parent.component.html:
<child class="child-color-black"></child>
<child class="child-color-blue"></child>

In other words, you use :host pseudo-selector provided by Angular + set of CSS classes to define possible child styles in child component itself. You then have the ability to trigger those styles from outside by applying pre-defined classes to the <child> host element.

from celery.task.control import inspect
def key_in_list(k, l):
    return bool([True for i in l if k in i.values()])

def check_task(task_id):
    task_value_dict = inspect().active().values()
    for task_list in task_value_dict:
        if self.key_in_list(task_id, task_list):
             return True
    return False

Generally i prefer the lambda syntax with LINQ, but Join is one example where i prefer the query syntax - purely for readability.

Nonetheless, here is the equivalent of your above query (i think, untested):

var query = db.Categories         // source
   .Join(db.CategoryMaps,         // target
      c => c.CategoryId,          // FK
      cm => cm.ChildCategoryId,   // PK
      (c, cm) => new { Category = c, CategoryMaps = cm }) // project result
   .Select(x => x.Category);  // select result

You might have to fiddle with the projection depending on what you want to return, but that's the jist of it.

HTML:

<div class="container">
    <div class="box">
        <img src="http://lorempixel.com/1600/1200/" alt="">
    </div>
</div>

CSS:

.container {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: stretch;

  width: 100%;
  height: 100%;

  border-radius: 4px;
  background-color: hsl(0, 0%, 96%);
}

.box {
  border-radius: 4px;
  display: flex;
}

.box img {
  width: 100%;
  object-fit: contain;
  border-radius: 4px;
}

The C# DLL is set up with platform target x86

Which is kind of the problem, a DLL doesn't actually get to choose what the bitness of the process will be. That's entirely determined by the EXE project, that's the first assembly that gets loaded so its Platform target setting is the one that counts and sets the bitness for the process.

The DLLs have no choice, they need to be compatible with the process bitness. If they are not then you'll get a big Kaboom with a BadImageFormatException when your code tries to use them.

So a good selection for the DLLs is AnyCPU so they work either way. That makes lots of sense for C# DLLs, they do work either way. But sure, not your C++/CLI mixed mode DLL, it contains unmanaged code that can only work well when the process runs in 32-bit mode. You can get the build system to generate warnings about that. Which is exactly what you got. Just warnings, it still builds properly.

Just punt the problem. Set the EXE project's Platform target to x86, it isn't going to work with any other setting. And just keep all the DLL projects at AnyCPU.

I'd get a logic analyzer and wire it up to the serial port. I think there are probably only two lines you need (Tx/Rx), so there should be plenty of cheap logic analyzers available. You don't have a clock line handy though, so that could get tricky.

Another gotcha I recently came across is that in IE 8, "abcd".substr(-1) erroneously returns "abcd", whereas Firefox 3.6 returns "d" as it should. slice works correctly on both.

More on this topic can be found here.

The .browser call has been removed in jquery 1.9 have a look at http://jquery.com/upgrade-guide/1.9/ for more details.

If you're like me, you probably have terminal running most of the time as well. You could just create an alias in /Users//.bash_profile like this alias eclipse='open -n path_to_eclipse.app'

then all you have to do is just open the terminal and type eclipse.

system "sleep 0.1";

does the trick.

Follow the Steps:

1. Find .gitconfig from the system

   File Location For Windows : "C:\Users${USER_NAME}.gitconfig"

   File Location For Linux : "/usr/local/git/etc/gitconfig"

2. Open .gitconfig file and add below lines as per your condition

    [includeIf "gitdir:D:\ORG-A-PROJECTS\"]
   
    [user]
   
        name = John Smith
   
        email = [email protected] [includeIf "gitdir:~/organization_b/"]
   
    [user]
   
        name = John Doe
   
        email = [email protected]
   

Spring is a collection of best-practise API patterns, you can write up a shopping list of them as long as your arm. The way that the API is designed encourages you (but doesn't force you) to follow these patterns, and half the time you follow them without knowing you are doing so.

for .NET Core console apps you can do this 2 ways - from the launchsettings.json or the properties menu.

Launchsettings.json

or right click the project > properties > debug tab on left

see "Application Arguments:"

• this is " " (space) delimited, no need for any commas. just start typing. each space " " will represent a new input parameter.
• (whatever changes you make here will be reflected in the launchsettings.json file...)

You need to give a function to be called after the time delay as the second argument to after:

after(delay_ms, callback=None, *args)

Registers an alarm callback that is called after a given time.

So what you really want to do is this:

tiles_letter = ['a', 'b', 'c', 'd', 'e']

def add_letter():
    rand = random.choice(tiles_letter)
    tile_frame = Label(frame, text=rand)
    tile_frame.pack()
    root.after(500, add_letter)
    tiles_letter.remove(rand)  # remove that tile from list of tiles


root.after(0, add_letter)  # add_letter will run as soon as the mainloop starts.
root.mainloop()

You also need to schedule the function to be called again by repeating the call to after inside the callback function, since after only executes the given function once. This is also noted in the documentation:

The callback is only called once for each call to this method. To keep calling the callback, you need to reregister the callback inside itself

Note that your example will throw an exception as soon as you've exhausted all the entries in tiles_letter, so you need to change your logic to handle that case whichever way you want. The simplest thing would be to add a check at the beginning of add_letter to make sure the list isn't empty, and just return if it is:

def add_letter():
    if not tiles_letter:
        return
    rand = random.choice(tiles_letter)
    tile_frame = Label(frame, text=rand)
    tile_frame.pack()
    root.after(500, add_letter)
    tiles_letter.remove(rand)  # remove that tile from list of tiles

Live-Demo: repl.it

You may just call the onBackPressed()and if you want some activity to display after the back button you have mention the

Intent intent = new Intent(ResetPinActivity.this, MenuActivity.class);
    startActivity(intent);
    finish();

that worked for me.

When you create your Process object set StartInfo appropriately:

var proc = new Process 
{
    StartInfo = new ProcessStartInfo
    {
        FileName = "program.exe",
        Arguments = "command line arguments to your executable",
        UseShellExecute = false,
        RedirectStandardOutput = true,
        CreateNoWindow = true
    }
};

then start the process and read from it:

proc.Start();
while (!proc.StandardOutput.EndOfStream)
{
    string line = proc.StandardOutput.ReadLine();
    // do something with line
}

You can use int.Parse() or int.TryParse() to convert the strings to numeric values. You may have to do some string manipulation first if there are invalid numeric characters in the strings you read.

You can do this:

cat("File not supplied.\nUsage: ./program F=filename\n")

Notice that cat has a return value of NULL.

Use the below:

var regEx = new RegExp(pattern1+'|'+pattern2, 'gi');

str.match(regEx);

I also experienced this issue after installing Telerik Reporting. I was not able to launch any solution in Visual Studio 2013, nor could I close Visual Studio 2013.

After uninstalling the reporting package and deleting Local / Roaming AppData for Visual Studio 2012, the problem was fixed.

I fixed it writing the following:

<?xml version="1.0" encoding="UTF-8"?>
<CORSConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
<CORSRule>
    <AllowedOrigin>*</AllowedOrigin>
    <AllowedMethod>GET</AllowedMethod>
    <MaxAgeSeconds>3000</MaxAgeSeconds>
    <AllowedHeader>*</AllowedHeader>
</CORSRule>
</CORSConfiguration>

Why <AllowedHeader>*</AllowedHeader> is working and <AllowedHeader>Authorization</AllowedHeader> not?

in your css:

.selected{
    background: #F00;
}

in the jquery:

$("#data tr").click(function(){
   $(this).toggleClass('selected');
});

Basically you create a class and adds/removes it from the selected row.

Btw you could have shown more effort, there's no css or jquery/js at all in your code xD

You can use the button :

1 - make the text empty

2 - set the background for it

+3 - you can use the selector to more useful and nice button

About the imagebutton you can set the image source and the background the same picture and it must be (*.png) when you do it you can make any design for the button

and for more beauty button use the selector //just Google it ;)

If you need to organize data in columns of 1 / 2 / 4 depending of the viewport size then push and pull may be no option at all. No matter how you order your items in the first place, one of the sizes may give you a wrong order.

A solution in this case is to use nested rows and cols without any push or pull classes.

Example

In XS you want...

A
B
C
D
E
F
G
H

In SM you want...

A   E
B   F
C   G
D   H

In MD and above you want...

A   C   E   G
B   D   F   H

Solution

Use nested two-column child elements in a surrounding two-column parent element:

Here is a working snippet:

<script src="https://code.jquery.com/jquery-1.12.4.min.js" type="text/javascript" ></script>_x000D_
<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet"> _x000D_
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>_x000D_
_x000D_
<div class="row">_x000D_
  <div class="col-sm-6">_x000D_
    <div class="row">_x000D_
      <div class="col-md-6"><p>A</p><p>B</p></div>_x000D_
      <div class="col-md-6"><p>C</p><p>D</p></div>_x000D_
    </div>_x000D_
  </div>_x000D_
  <div class="col-sm-6">_x000D_
    <div class="row">_x000D_
      <div class="col-md-6"><p>E</p><p>F</p></div>_x000D_
      <div class="col-md-6"><p>G</p><p>H</p></div>_x000D_
    </div>_x000D_
  </div>_x000D_
</div>

Another beauty of this solution is, that the items appear in the code in their natural order (A, B, C, ... H) and don't have to be shuffled, which is nice for CMS generation.

in laravel 5 first we need to create migration and then run the migration

Step 1.

php artisan make:migration create_users_table --create=users

Step 2.

php artisan migrate

In my case, the error "BeanFactory not initialized or already closed - call 'refresh' before" was a consequence of a previous error that I didn't noticed in the server startup. I think that it is not always the real cause of the problem.

ASP.NET Core 3.1

This is my implementation of the feature, it works on server side as well as with jquery validation unobtrusive with a custom error message just like any other attribute:

The attribute:

  [AttributeUsage(AttributeTargets.Property, AllowMultiple = false, Inherited = false)]
    public class MustBeIntegerAttribute : ValidationAttribute, IClientModelValidator
    {
        public void AddValidation(ClientModelValidationContext context)
        {
            MergeAttribute(context.Attributes, "data-val", "true");
            var errorMsg = FormatErrorMessage(context.ModelMetadata.GetDisplayName());
            MergeAttribute(context.Attributes, "data-val-mustbeinteger", errorMsg);
        }

        public override bool IsValid(object value)
        {
            return int.TryParse(value?.ToString() ?? "", out int newVal);
        }

        private bool MergeAttribute(
              IDictionary<string, string> attributes,
              string key,
              string value)
        {
            if (attributes.ContainsKey(key))
            {
                return false;
            }
            attributes.Add(key, value);
            return true;
        }
    }

Client side logic:

$.validator.addMethod("mustbeinteger",
    function (value, element, parameters) {
        return !isNaN(parseInt(value)) && isFinite(value);
    });

$.validator.unobtrusive.adapters.add("mustbeinteger", [], function (options) {
    options.rules.mustbeinteger = {};
    options.messages["mustbeinteger"] = options.message;
});

And finally the Usage:

 [MustBeInteger(ErrorMessage = "You must provide a valid number")]
 public int SomeNumber { get; set; }

I developed this algorithm while making this game: https://mshwf.github.io/mates/

If the circle touches the square, then the distance between the centerline of the circle and the centerline of the square should equal (diameter+side)/2. So, let's have a variable named touching that holds that distance. The problem was: which centerline should I consider: the horizontal or the vertical? Consider this frame:

Each centerline gives different distances, and only one is a correct indication to a no-collision, but using our human intuition is a start to understand how the natural algorithm works.

They are not touching, which means that the distance between the two centerlines should be greater than touching, which means that the natural algorithm picks the horizontal centerlines (the vertical centerlines says there's a collision!). By noticing multiple circles, you can tell: if the circle intersects with the vertical extension of the square, then we pick the vertical distance (between the horizontal centerlines), and if the circle intersects with the horizontal extension, we pick the horizontal distance:

Another example, circle number 4: it intersects with the horizontal extension of the square, then we consider the horizontal distance which is equal to touching.

Ok, the tough part is demystified, now we know how the algorithm will work, but how we know with which extension the circle intersects? It's easy actually: we calculate the distance between the most right x and the most left x (of both the circle and the square), and the same for the y-axis, the one with greater value is the axis with the extension that intersects with the circle (if it's greater than diameter+side then the circle is outside the two square extensions, like circle #7). The code looks like:

right = Math.max(square.x+square.side, circle.x+circle.rad);
left = Math.min(square.x, circle.x-circle.rad);

bottom = Math.max(square.y+square.side, circle.y+circle.rad);
top = Math.min(square.y, circle.y-circle.rad);

if (right - left > down - top) {
 //compare with horizontal distance
}
else {
 //compare with vertical distance
}

/*These equations assume that the reference point of the square is at its top left corner, and the reference point of the circle is at its center*/

If your elements are value types, then you can just do:

List<YourType> newList = new List<YourType>(oldList);

However, if they are reference types and you want a deep copy (assuming your elements properly implement ICloneable), you could do something like this:

List<ICloneable> oldList = new List<ICloneable>();
List<ICloneable> newList = new List<ICloneable>(oldList.Count);

oldList.ForEach((item) =>
    {
        newList.Add((ICloneable)item.Clone());
    });

Obviously, replace ICloneable in the above generics and cast with whatever your element type is that implements ICloneable.

If your element type doesn't support ICloneable but does have a copy-constructor, you could do this instead:

List<YourType> oldList = new List<YourType>();
List<YourType> newList = new List<YourType>(oldList.Count);

oldList.ForEach((item)=>
    {
        newList.Add(new YourType(item));
    });

Personally, I would avoid ICloneable because of the need to guarantee a deep copy of all members. Instead, I'd suggest the copy-constructor or a factory method like YourType.CopyFrom(YourType itemToCopy) that returns a new instance of YourType.

Any of these options could be wrapped by a method (extension or otherwise).

var d1 = Date.parse("2012-11-01");
var d2 = Date.parse("2012-11-04");
if (d1 < d2) {
    alert ("Error!");
}

Demo Jsfiddle

My favourite answer so far is coloredEcho.

Just to post another option, you can check out this little tool xcol

https://ownyourbits.com/2017/01/23/colorize-your-stdout-with-xcol/

you use it just like grep, and it will colorize its stdin with a different color for each argument, for instance

sudo netstat -putan | xcol httpd sshd dnsmasq pulseaudio conky tor Telegram firefox "[[:digit:]]+\.[[:digit:]]+\.[[:digit:]]+\.[[:digit:]]+" ":[[:digit:]]+" "tcp." "udp." LISTEN ESTABLISHED TIME_WAIT

Note that it accepts any regular expression that sed will accept.

This tool uses the following definitions

#normal=$(tput sgr0)                      # normal text
normal=$'\e[0m'                           # (works better sometimes)
bold=$(tput bold)                         # make colors bold/bright
red="$bold$(tput setaf 1)"                # bright red text
green=$(tput setaf 2)                     # dim green text
fawn=$(tput setaf 3); beige="$fawn"       # dark yellow text
yellow="$bold$fawn"                       # bright yellow text
darkblue=$(tput setaf 4)                  # dim blue text
blue="$bold$darkblue"                     # bright blue text
purple=$(tput setaf 5); magenta="$purple" # magenta text
pink="$bold$purple"                       # bright magenta text
darkcyan=$(tput setaf 6)                  # dim cyan text
cyan="$bold$darkcyan"                     # bright cyan text
gray=$(tput setaf 7)                      # dim white text
darkgray="$bold"$(tput setaf 0)           # bold black = dark gray text
white="$bold$gray"                        # bright white text

I use these variables in my scripts like so

echo "${red}hello ${yellow}this is ${green}coloured${normal}"

    with open(csv_filename) as file:
        data = file.read()

    with open(xl_file_name, 'w') as file:
        file.write(data)

You can turn CSV to excel like above with inbuilt packages. CSV can be handled with an inbuilt package of dictreader and dictwriter which will work the same way as python dictionary works. which makes it a ton easy I am currently unaware of any inbuilt packages for excel but I had come across openpyxl. It was also pretty straight forward and simple You can see the code snippet below hope this helps

    import openpyxl
    book = openpyxl.load_workbook(filename)
    sheet = book.active 
    result =sheet['AP2']
    print(result.value)

This documentation suggests quoting will work:

<string name="my_str_spaces">" Before and after? "</string>

I use JuJu which basically allows to have a really tiny linux distribution (containing just the package manager) inside your $HOME/.juju directory.

It allows to have your custom system inside the home directory accessible via proot and, therefore, you can install any packages without root privileges. It will run properly to all the major linux distributions, the only limitation is that JuJu can run on linux kernel with minimum reccomended version 2.6.32.

For instance, after installed JuJu to install pip just type the following:

$>juju -f
(juju)$> pacman -S python-pip
(juju)> pip

if you wish to using dplyr, for to remove row "Foo":

df %>%
 filter(!C=="Foo")

git commit -a -m "message"

-a : Includes all currently changed/deleted files in this commit. Keep in mind, however, that untracked (new) files are not included.

-m : Sets the commit's message

If you declare a DateTime, then the default value is DateTime.MinValue, and hence you have to check it like this:

DateTime dat = new DateTime();

 if (dat==DateTime.MinValue)
 {
     //unassigned
 }

If the DateTime is nullable, well that's a different story:

 DateTime? dat = null;

 if (!dat.HasValue)
 {
     //unassigned
 }

Simple Example

var request = require('request');

//Custom Header pass
var headersOpt = {  
    "content-type": "application/json",
};
request(
        {
        method:'post',
        url:'https://www.googleapis.com/urlshortener/v1/url', 
        form: {name:'hello',age:25}, 
        headers: headersOpt,
        json: true,
    }, function (error, response, body) {  
        //Print the Response
        console.log(body);  
}); 

Spring MVC will give you the HttpRequest if you just add it to your controller method signature:

For instance:

/**
 * Generate a PDF report...
 */
@RequestMapping(value = "/report/{objectId}", method = RequestMethod.GET)
public @ResponseBody void generateReport(
        @PathVariable("objectId") Long objectId, 
        HttpServletRequest request, 
        HttpServletResponse response) {

    // ...
    // Here you can use the request and response objects like:
    // response.setContentType("application/pdf");
    // response.getOutputStream().write(...);

}

As you see, simply adding the HttpServletRequest and HttpServletResponse objects to the signature makes Spring MVC to pass those objects to your controller method. You'll want the HttpSession object too.

EDIT: It seems that HttpServletRequest/Response are not working for some people under Spring 3. Try using Spring WebRequest/WebResponse objects as Eduardo Zola pointed out.

I strongly recommend you to have a look at the list of supported arguments that Spring MVC is able to auto-magically inject to your handler methods.

    public static boolean isRootAvailable(){
            Process p = null;
            try{
               p = Runtime.getRuntime().exec(new String[] {"su"});
               writeCommandToConsole(p,"exit 0");
               int result = p.waitFor();
               if(result != 0)
                   throw new Exception("Root check result with exit command " + result);
               return true;
            } catch (IOException e) {
                Log.e(LOG_TAG, "Su executable is not available ", e);
            } catch (Exception e) {
                Log.e(LOG_TAG, "Root is unavailable ", e);
            }finally {
                if(p != null)
                    p.destroy();
            }
            return false;
        }
 private static String writeCommandToConsole(Process proc, String command, boolean ignoreError) throws Exception{
            byte[] tmpArray = new byte[1024];
            proc.getOutputStream().write((command + "\n").getBytes());
            proc.getOutputStream().flush();
            int bytesRead = 0;
            if(proc.getErrorStream().available() > 0){
                if((bytesRead = proc.getErrorStream().read(tmpArray)) > 1){
                    Log.e(LOG_TAG,new String(tmpArray,0,bytesRead));
                    if(!ignoreError)
                        throw new Exception(new String(tmpArray,0,bytesRead));
                }
            }
            if(proc.getInputStream().available() > 0){
                bytesRead = proc.getInputStream().read(tmpArray);
                Log.i(LOG_TAG, new String(tmpArray,0,bytesRead));
            }
            return new String(tmpArray);
        }

I am assuming you are using java 7, thus you get a compiler warning, when you don't close the resource you should close your scanner usually in a finally block.

Scanner scanner = null;
try {
    scanner = new Scanner(System.in);
    //rest of the code
}
finally {
    if(scanner!=null)
        scanner.close();
}

Or even better: use the new Try with resource statement:

try(Scanner scanner = new Scanner(System.in)){
    //rest of your code
}

I guess this is what you need. Try this .

<form action="" method="get">
                <input name="search" type="text">
                <input type="button" value="Search" onclick="return updateTable();">
                </form>

and your javascript code is the same

function updateTable()
    {   
        var photoViewer = document.getElementById('photoViewer');
        var photo = document.getElementById('photo1').href;
        var numOfPics = 5;
        var columns = 3; 
        var rows = Math.ceil(numOfPics/columns);
        var content="";
        var count=0;

        content = "<table class='photoViewer' id='photoViewer'>";
            for (r = 0; r < rows; r++) {
                content +="<tr>";
                for (c = 0; c < columns; c++) {
                    count++;
                    if(count == numOfPics)break; // here is check if number of cells equal Number of Pictures to stop
                        content +="<td><a href='"+photo+"' id='photo1'><img class='photo' src='"+photo+"' alt='Photo'></a><p>City View</p></td>";
                }
                content +="</tr>";
            }
        content += "</table>";

        photoViewer.innerHTML = content; 
}

I hope the above answer works for elastic search <7.0 but in 7.0 we cannot specify doc type and it is no longer supported. And in that case if we specify doc type we get similar error.

I you are making use of Elastic search 7.0 and Nest C# lastest version(6.6). There are some breaking changes with ES 7.0 which is causing this issue. This is because we cannot specify doc type and in the version 6.6 of NEST they are using doctype. So in order to solve that untill NEST 7.0 is released, we need to download their beta package

Please go through this link for fixing it

https://xyzcoder.github.io/elasticsearch/nest/2019/04/12/es-70-and-nest-mapping-error.html

EDIT: NEST 7.0 is now released. NEST 7.0 works with Elastic 7.0. See the release notes here for details.

Other than the options mentioned above, there are a couple of other Solutions.

1. Modifying the project file (.CsProj) file

MSBuild supports the EnvironmentName Property which can help to set the right environment variable as per the Environment you wish to Deploy. The environment name would be added in the web.config during the Publish phase.

Simply open the project file (*.csProj) and add the following XML.

<!-- Custom Property Group added to add the Environment name during publish
  The EnvironmentName property is used during the publish for the Environment variable in web.config
  -->
  <PropertyGroup Condition=" '$(Configuration)' == '' Or '$(Configuration)' == 'Debug'">
    <EnvironmentName>Development</EnvironmentName>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)' != '' AND '$(Configuration)' != 'Debug' ">
    <EnvironmentName>Production</EnvironmentName>
  </PropertyGroup>

Above code would add the environment name as Development for Debug configuration or if no configuration is specified. For any other Configuration the Environment name would be Production in the generated web.config file. More details here

2. Adding the EnvironmentName Property in the publish profiles.

We can add the <EnvironmentName> property in the publish profile as well. Open the publish profile file which is located at the Properties/PublishProfiles/{profilename.pubxml} This will set the Environment name in web.config when the project is published. More Details here

<PropertyGroup>
  <EnvironmentName>Development</EnvironmentName>
</PropertyGroup>

3. Command line options using dotnet publish

Additionaly, we can pass the property EnvironmentName as a command line option to the dotnet publish command. Following command would include the environment variable as Development in the web.config file.

dotnet publish -c Debug -r win-x64 /p:EnvironmentName=Development

(This method works for ifs, multiple nested loops and other constructs that you can't break from easily.)

Wrap the code in its own function. Instead of break, use return.

Example:

def some_function():
    if condition_a:
        # do something and return early
        ...
        return
    ...
    if condition_b:
        # do something else and return early
        ...
        return
    ...
    return

if outer_condition:
    ...
    some_function()
    ...

The reason for this is simple. JavaScript uses refereces, so when you assign b = a you are assigning a reference to b thus when updating a you are also updating b

I found this on stackoverflow and will help prevent things like this in the future by just calling this method if you want to do a deep copy of an object.

function clone(obj) {
    // Handle the 3 simple types, and null or undefined
    if (null == obj || "object" != typeof obj) return obj;

    // Handle Date
    if (obj instanceof Date) {
        var copy = new Date();
        copy.setTime(obj.getTime());
        return copy;
    }

    // Handle Array
    if (obj instanceof Array) {
        var copy = [];
        for (var i = 0, len = obj.length; i < len; i++) {
            copy[i] = clone(obj[i]);
        }
        return copy;
    }

    // Handle Object
    if (obj instanceof Object) {
        var copy = {};
        for (var attr in obj) {
            if (obj.hasOwnProperty(attr)) copy[attr] = clone(obj[attr]);
        }
        return copy;
    }

    throw new Error("Unable to copy obj! Its type isn't supported.");
}

The TextBox has a property called ReadOnly. If you set that property to true then the TextBox will still be able to scroll but the user wont be able to change the value.

On 2013-12-03 Google launched Chrome DevTools for Mobile, which lets developers remote debug mobile web applications via emulation and screen-casting with Zero Configuration.

For all features, checkout Paul Irish's talk on YouTube.

java.util.Date class has before and after method to compare dates.

Date date1 = new Date();
Date date2 = new Date();

if(date1.before(date2)){
    //Do Something
}

if(date1.after(date2)){
    //Do Something else
}

Nvm can be used to manage various node version :

• Step1: Download nvm for Windows

• Step2: Choose nvm-setup.zip

• Step3: Unzip & click on installer.

• Step4: Check if nvm properly installed, In new command prompt type nvm

• Step5: Install node js using nvm : nvm install <version> : The version can be a node.js version or "latest" for the latest stable version

• Step6: check node version - node -v

• Step7(Optional)If you want to install another version of node js - Use STEP 5 with different version.

• Step8: Check list node js version - nvm list

• Step9: If you want to use specific node version do - nvm use <version>

A funny way to remove all spaces from a variable is to use printf:

$ myvar='a cool variable    with   lots of   spaces in it'
$ printf -v myvar '%s' $myvar
$ echo "$myvar"
acoolvariablewithlotsofspacesinit

It turns out it's slightly more efficient than myvar="${myvar// /}", but not safe regarding globs (*) that can appear in the string. So don't use it in production code.

If you really really want to use this method and are really worried about the globbing thing (and you really should), you can use set -f (which disables globbing altogether):

$ ls
file1  file2
$ myvar='  a cool variable with spaces  and  oh! no! there is  a  glob  *  in it'
$ echo "$myvar"
  a cool variable with spaces  and  oh! no! there is  a  glob  *  in it
$ printf '%s' $myvar ; echo
acoolvariablewithspacesandoh!no!thereisaglobfile1file2init
$ # See the trouble? Let's fix it with set -f:
$ set -f
$ printf '%s' $myvar ; echo
acoolvariablewithspacesandoh!no!thereisaglob*init
$ # Since we like globbing, we unset the f option:
$ set +f

I posted this answer just because it's funny, not to use it in practice.

Because you initialized the top variable to -1 in your constructor, you need to increment the top variable in your push() method before you access the array. Note that I've changed the assignment to use ++top:

public void push(int i) 
{
    if (top == stack.length)
    {
        extendStack();
    }

    stack[++top]= i;
}

That will fix the ArrayIndexOutOfBoundsException you posted about. I can see other issues in your code, but since this is a homework assignment I'll leave those as "an exercise for the reader." :)

One more solution with resolving by name:

@Resource(name="country")

It uses javax.annotation package, so it's not Spring specific, but Spring supports it.

One more plugin, to play notification sounds on websites: Ion.Sound

• Basic Demo
• Advanced Demo
• Ion.Sound GitHub Page

Advantages:

• JavaScript-plugin for playing sounds based on Web Audio API with fallback to HTML5 Audio.
• Plugin is working on most popular desktop and mobile browsers and can be used everywhere, from common web sites to browser games.
• Audio-sprites support included.
• No dependecies (jQuery not required).
• 25 free sounds included.

Set up plugin:

// set up config
ion.sound({
    sounds: [
        {
            name: "my_cool_sound"
        },
        {
            name: "notify_sound",
            volume: 0.2
        },
        {
            name: "alert_sound",
            volume: 0.3,
            preload: false
        }
    ],
    volume: 0.5,
    path: "sounds/",
    preload: true
});

// And play sound!
ion.sound.play("my_cool_sound");

Maybe a little bit off topic, but here is the solution using Scala. Make an Array of column names from your oldDataFrame and delete the columns that you want to drop ("colExclude"). Then pass the Array[Column] to select and unpack it.

val columnsToKeep: Array[Column] = oldDataFrame.columns.diff(Array("colExclude"))
                                               .map(x => oldDataFrame.col(x))
val newDataFrame: DataFrame = oldDataFrame.select(columnsToKeep: _*)

I had this error on a number of modules when I had been running different versions of PHP side by side on my server. To sort this out, I needed to install the packages it couldn't find for that specific PHP version. So, for example, if I saw:-

PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/20160303/xml.so'

I would install the library for the PHP version specifically:-

sudo apt-get install php7.1-xml

And then restart Apache. Fixed it for me. You can check your version like this:-

php -v

The simplest way to to check running processes:

ps auxwww | grep postgres

And look for a command that looks something like this (your version may not be 8.3):

/Library/PostgreSQL/8.3/bin/postgres -D /Library/PostgreSQL/8.3/data

To start the server, execute something like this:

/Library/PostgreSQL/8.3/bin/pg_ctl start -D /Library/PostgreSQL/8.3/data -l postgres.log

If you really need to use the SDK Windows 10 with Visual Studio 2015, you have to download an older version on sdk-archive. Newer version of the SDK changed the place of the rc executable and MSBuild of Visual Studio 2015 update 3 (latest version) can't locate it. At least the version 10.0.14393.795 of the SDK Windows is still compatible with Visual Studio 2015.

Loop over the file to read lines:

with open('somefile') as openfileobject:
    for line in openfileobject:
        do_something()

File objects are iterable and yield lines until EOF. Using the file object as an iterable uses a buffer to ensure performant reads.

You can do the same with the stdin (no need to use raw_input():

import sys

for line in sys.stdin:
    do_something()

To complete the picture, binary reads can be done with:

from functools import partial

with open('somefile', 'rb') as openfileobject:
    for chunk in iter(partial(openfileobject.read, 1024), b''):
        do_something()

where chunk will contain up to 1024 bytes at a time from the file, and iteration stops when openfileobject.read(1024) starts returning empty byte strings.

Get the difference of two lists using Any(). The Linq Any() function returns a boolean if a condition is met but you can use it to return the difference of two lists:

var difference = ListA.Where(a => !ListB.Any(b => b.ListItem == a.ListItem)).ToList();

The answer is neither.

Docker Compose (herein referred to as compose) will use the Dockerfile if you add the build command to your project's docker-compose.yml.

Your Docker workflow should be to build a suitable Dockerfile for each image you wish to create, then use compose to assemble the images using the build command.

You can specify the path to your individual Dockerfiles using build /path/to/dockerfiles/blah where /path/to/dockerfiles/blah is where blah's Dockerfile lives.

I have tested the suggested solutions, they should all work:

select * from dual where (105 = to_number('105'))

=> delivers one dummy row

select * from dual where (10 = to_number('105'))

=> empty result

select * from dual where ('105' = to_char(105))

=> delivers one dummy row

select * from dual where ('105' = to_char(10))

=> empty result

boto3 offers a resource model that makes tasks like iterating through objects easier. Unfortunately, StreamingBody doesn't provide readline or readlines.

s3 = boto3.resource('s3')
bucket = s3.Bucket('test-bucket')
# Iterates through all the objects, doing the pagination for you. Each obj
# is an ObjectSummary, so it doesn't contain the body. You'll need to call
# get to get the whole body.
for obj in bucket.objects.all():
    key = obj.key
    body = obj.get()['Body'].read()

The {glue} package offers string interpolation. In the example, {wd} is substituted with the contents of the variable. Complex expressions are also supported.

library(glue)

wd <- getwd()
glue("Current working dir: {wd}")
#> Current working dir: /tmp/RtmpteMv88/reprex46156826ee8c

^{Created on 2019-05-13 by the reprex package (v0.2.1)}

Note how the printed output doesn't contain the [1] artifacts and the " quotes, for which other answers use cat().

The correlation matrix is the standard way to express correlations between an arbitrary finite number of variables. The correlation matrix of N data vectors is a symmetric N × N matrix with unity diagonal. Only in the case N = 2 does this matrix have one free parameter.

a.getClass().getName()

While the json begins with "[" and ends with "]" that means this is the Json Array, use JSONArray instead:

JSONArray jsonArray = new JSONArray(JSON);

And then you can map it with the List Test Object if you need:

ObjectMapper mapper = new ObjectMapper();
List<TestExample> listTest = mapper.readValue(String.valueOf(jsonArray), List.class);

You can try the below example. Do use '-' before the width to ensure left indentation. By default they will be right indented; which may not suit your purpose.

System.out.printf("%2d. %-20s $%.2f%n",  i + 1, BOOK_TYPE[i], COST[i]);

Format String Syntax: http://docs.oracle.com/javase/7/docs/api/java/util/Formatter.html#syntax

Formatting Numeric Print Output: https://docs.oracle.com/javase/tutorial/java/data/numberformat.html

PS: This could go as a comment to DwB's answer, but i still don't have permissions to comment and so answering it.

I found a better solution, maybe it can help somebody replace "watch?v=" by "v/" and it will work

var url = url.replace("watch?v=", "v/");

I assume you want lowercase the text. Solution is pretty simple:

ggVGu

Explanation:

1. gg - goes to first line of text
2. V - turns on Visual selection, in line mode
3. G - goes to end of file (at the moment you have whole text selected)
4. u - lowercase selected area

I have created a snippet - inspired by the actual View source - that reliably detects long clicks/presses with a custom delay. But it's in Kotlin:

val LONG_PRESS_DELAY = 500

val handler = Handler()
var boundaries: Rect? = null

var onTap = Runnable {
    handler.postDelayed(onLongPress, LONG_PRESS_DELAY - ViewConfiguration.getTapTimeout().toLong())
}

var onLongPress = Runnable {

    // Long Press
}

override fun onTouch(view: View, event: MotionEvent): Boolean {
    when (event.action) {
        MotionEvent.ACTION_DOWN -> {
            boundaries = Rect(view.left, view.top, view.right, view.bottom)
            handler.postDelayed(onTap, ViewConfiguration.getTapTimeout().toLong())
        }
        MotionEvent.ACTION_UP, MotionEvent.ACTION_CANCEL -> {
            handler.removeCallbacks(onLongPress)
            handler.removeCallbacks(onTap)
        }
        MotionEvent.ACTION_MOVE -> {
            if (!boundaries!!.contains(view.left + event.x.toInt(), view.top + event.y.toInt())) {
                handler.removeCallbacks(onLongPress)
                handler.removeCallbacks(onTap)
            }
        }
    }
    return true
}

a much more practical way for those who do not want to use regex:

$data = filter_var($data, FILTER_SANITIZE_NUMBER_INT);

note: it works with phone numbers too.

Contrary to some of the other answers here, I say that you can use tabs however you want. vim was designed to be versatile and customizable, rather than forcing you to work according to predefined parameters. We all know how us programmers love to impose our "ethics" on everyone else, so this achievement is certainly a primary feature.

<C-w>gf is the tab equivalent of buffers' gf command. <C-PageUp> and <C-PageDown> will switch between tabs. (In Byobu, these two commands never work for me, but they work outside of Byobu/tmux. Alternatives are gt and gT.) <C-w>T will move the current window to a new tab page.

If you'd prefer that vim use an existing tab if possible, rather than creating a duplicate tab, add :set switchbuf=usetab to your .vimrc file. You can add newtab to the list (:set switchbuf=usetab,newtab) to force QuickFix commands that display compile errors to open in separate tabs. I prefer split instead, which opens the compile errors in a split window.

If you have mouse support enabled with :set mouse=a, you can interact with the tabs by clicking on them. There's also a + button by default that will create a new tab.

For the documentation on tabs, type :help tab-page in normal mode. (After you do that, you can practice moving a window to a tab using <C-w>T.) There's a long list of commands. Some of the window commands have to do with tabs, so you might want to look at that documentation as well via :help windows.

Addition: 2013-12-19

To open multiple files in vim with each file in a separate tab, use vim -p file1 file2 .... If you're like me and always forget to add -p, you can add it at the end, as vim follows the normal command line option parsing rules. Alternatively, you can add a bash alias mapping vim to vim -p.

The solution I found was to use the New-Object cmdlet to initialize an array of the proper size.

$array = new-object object[] 5 
for($i=0; $i -lt $array.Length;$i++)
{
    $array[$i] = $FALSE
}

I had a VC++ project that was always compiling all files and had been previously upgraded from VS2005 to VS2010 (by other people). I found that all cpp files in the project except StdAfx.cpp were set to Create (/Yc) the precompiled header. I changed this so that only StdAfx.cpp was set to create the precompiled header and the rest were set to Use (/Yu) the precompiled header and this fixed the problem for me.

VERY SIMPLE FIX

1. Go to your app directory
2. Start SimpleHTTPServer

In the terminal

$ cd yourAngularApp
~/yourAngularApp $ python -m SimpleHTTPServer

Now, go to localhost:8000 in your browser and the page will show

The thing you are missing is that T and interface{} which holds a value of T have different representations in memory so can't be trivially converted.

A variable of type T is just its value in memory. There is no associated type information (in Go every variable has a single type known at compile time not at run time). It is represented in memory like this:

• value

An interface{} holding a variable of type T is represented in memory like this

• pointer to type T
• value

So coming back to your original question: why go does't implicitly convert []T to []interface{}?

Converting []T to []interface{} would involve creating a new slice of interface {} values which is a non-trivial operation since the in-memory layout is completely different.

Just execute, to clean gems obsolete and remove print warningns after bundle.

bundle clean --force

Frank Heikens answer will only update database ownership. Often, you also want to update ownership of contained objects (including tables). Starting with Postgres 8.2, REASSIGN OWNED is available to simplify this task.

IMPORTANT EDIT!

Never use REASSIGN OWNED when the original role is postgres, this could damage your entire DB instance. The command will update all objects with a new owner, including system resources (postgres0, postgres1, etc.)

First, connect to admin database and update DB ownership:

psql
postgres=# REASSIGN OWNED BY old_name TO new_name;

This is a global equivalent of ALTER DATABASE command provided in Frank's answer, but instead of updating a particular DB, it change ownership of all DBs owned by 'old_name'.

The next step is to update tables ownership for each database:

psql old_name_db
old_name_db=# REASSIGN OWNED BY old_name TO new_name;

This must be performed on each DB owned by 'old_name'. The command will update ownership of all tables in the DB.

I wrote a simple program that solved the easy ones. It took its input from a file which was just a matrix with spaces and numbers. The datastructure to solve it was just a 9 by 9 matrix of a bit mask. The bit mask would specify which numbers were still possible on a certain position. Filling in the numbers from the file would reduce the numbers in all rows/columns next to each known location. When that is done you keep iterating over the matrix and reducing possible numbers. If each location has only one option left you're done. But there are some sudokus that need more work. For these ones you can just use brute force: try all remaining possible combinations until you find one that works.

Finally, A PHP 7.1+ answer with constants that cannot be overridden.

/**
 * An interface that groups HTTP Accept: header Media Types in one place.
 */
interface MediaTypes
{
    /**
    * Now, if you have to use these same constants with another class, you can
    * without creating funky inheritance / is-a relationships.
    * Also, this gets around the single inheritance limitation.
    */

    public const HTML = 'text/html';
    public const JSON = 'application/json';
    public const XML = 'application/xml';
    public const TEXT = 'text/plain';
}

/**
 * An generic request class.
 */
abstract class Request
{
    // Why not put the constants here?
    // 1) The logical reuse issue.
    // 2) Single Inheritance. 
    // 3) Overriding is possible.

    // Why put class constants here?
    // 1) The constant value will not be necessary in other class families.
}

/**
 * An incoming / server-side HTTP request class.
 */
class HttpRequest extends Request implements MediaTypes
{
    // This class can implement groups of constants as necessary.
}

If you are using namespaces, code completion should work.

However, in doing this, you loose the ability to hide the constants within the class family (protected) or class alone (private). By definition, everything in an Interface is public.

PHP Manual: Interfaces

Since you tagged it with javascript, I would go with a timer control since your function names are 3, 5, and 8 seconds. So start your timer, 3 seconds in, call the first, 5 seconds in call the second, 8 seconds in call the third, then when it's done, stop the timer.

Normally in Javascript what you have is correct for the functions are running one after another, but since it looks like you're trying to do timed animation, a timer would be your best bet.

You may want to use something like this:

NSDateComponents *components;
NSInteger days;

components = [[NSCalendar currentCalendar] components: NSDayCalendarUnit 
        fromDate: startDate toDate: endDate options: 0];
days = [components day];

I believe this method accounts for situations such as dates that span a change in daylight savings.

Messa's answer only works if the server isn't bothering to check the content-type header. You'll need to specify a content-type header if you want it to really work. Here's Messa's answer modified to include a content-type header:

import json
import urllib2
data = json.dumps([1, 2, 3])
req = urllib2.Request(url, data, {'Content-Type': 'application/json'})
f = urllib2.urlopen(req)
response = f.read()
f.close()

The following works for me:

class Fruits: pass

banana = Fruits()

banana.color = 'yellow'
banana.value = 30

import pickle

filehandler = open("Fruits.obj","wb")
pickle.dump(banana,filehandler)
filehandler.close()

file = open("Fruits.obj",'rb')
object_file = pickle.load(file)
file.close()

print(object_file.color, object_file.value, sep=', ')
# yellow, 30

editTextObject.setText(CharSequence)

http://developer.android.com/reference/android/widget/TextView.html#setText(java.lang.CharSequence)

On Windows, the only sure way is to use CtrlBreak. Stops every python script instantly!

(Note that on some keyboards, "Break" is labeled as "Pause".)

Michael Kropats solution in VB.net

Private Function RandomString(ByVal length As Integer, Optional ByVal allowedChars As String = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789") As String
    If length < 0 Then Throw New ArgumentOutOfRangeException("length", "length cannot be less than zero.")
    If String.IsNullOrEmpty(allowedChars) Then Throw New ArgumentException("allowedChars may not be empty.")


    Dim byteSize As Integer = 256
    Dim hash As HashSet(Of Char) = New HashSet(Of Char)(allowedChars)
    'Dim hash As HashSet(Of String) = New HashSet(Of String)(allowedChars)
    Dim allowedCharSet() = hash.ToArray

    If byteSize < allowedCharSet.Length Then Throw New ArgumentException(String.Format("allowedChars may contain no more than {0} characters.", byteSize))


    ' Guid.NewGuid and System.Random are not particularly random. By using a
    ' cryptographically-secure random number generator, the caller is always
    ' protected, regardless of use.
    Dim rng = New System.Security.Cryptography.RNGCryptoServiceProvider()
    Dim result = New System.Text.StringBuilder()
    Dim buf = New Byte(128) {}
    While result.Length < length
        rng.GetBytes(buf)
        Dim i
        For i = 0 To buf.Length - 1 Step +1
            If result.Length >= length Then Exit For
            ' Divide the byte into allowedCharSet-sized groups. If the
            ' random value falls into the last group and the last group is
            ' too small to choose from the entire allowedCharSet, ignore
            ' the value in order to avoid biasing the result.
            Dim outOfRangeStart = byteSize - (byteSize Mod allowedCharSet.Length)
            If outOfRangeStart <= buf(i) Then
                Continue For
            End If
            result.Append(allowedCharSet(buf(i) Mod allowedCharSet.Length))
        Next
    End While
    Return result.ToString()
End Function

This can also be due to missing __init__.py file from the directory. Say if you create a new directory in django for seperating the unit tests into multiple files and place them in one directory then you also have to create the __init__.py file beside all the other files in new created test directory. otherwise it can give error like Traceback (most recent call last): File "C:\Users\USERNAME\AppData\Local\Programs\Python\Python35\Lib\unittest\loader.py",line 153, in loadTestsFromName module = __import__(module_name) ImportError: bad magic number in 'APPNAME.tests': b'\x03\xf3\r\n'

You did the right thing by checking from query plans. But I have 100% confidence in version 2. It is faster when the number off records are on the very high side.

My database has around 1,000,000 records and this is exactly the scenario where the query plan shows the difference between both the queries. Further, instead of using a where clause, if you use it in the join itself, it makes the query faster :
SELECT p.Name, s.OrderQty
FROM Product p
INNER JOIN (SELECT ProductID, OrderQty FROM SalesOrderDetail) s on p.ProductID = s.ProductID WHERE p.isactive = 1

The better version of this query is :

SELECT p.Name, s.OrderQty
FROM Product p
INNER JOIN (SELECT ProductID, OrderQty FROM SalesOrderDetail) s on p.ProductID = s.ProductID AND p.isactive = 1

(Assuming isactive is a field in product table which represents the active/inactive products).

When a treatment of text must be done to just extract data from it, I always think first to the regexes, because:

• as far as I know, regexes have been invented for that

• iterating over lines appears clumsy to me: it essentially consists to search the newlines then to search the data to extract in each line; that makes two searches instead of a direct unique one with a regex

• way of bringing regexes into play is easy; only the writing of a regex string to be compiled into a regex object is sometimes hard, but in this case the treatment with an iteration over lines will be complicated too

For the problem discussed here, a regex solution is fast and easy to write:

import re
names = re.findall('\S+',open(filename).read())

I compared the speeds of several solutions:

import re
from time import clock

A,AA,B1,B2,BS,reg = [],[],[],[],[],[]
D,Dsh,C1,C2 = [],[],[],[]
F1,F2,F3  = [],[],[]

def nonblank_lines(f):
    for l in f:
        line = l.rstrip()
        if line:  yield line

def short_nonblank_lines(f):
    for l in f:
        line = l[0:-1]
        if line:  yield line

for essays in xrange(50):

    te = clock()
    with open('raa.txt') as f:
        names_listA = [line.strip() for line in f if line.strip()] # Felix Kling
    A.append(clock()-te)

    te = clock()
    with open('raa.txt') as f:
        names_listAA = [line[0:-1] for line in f if line[0:-1]] # Felix Kling with line[0:-1]
    AA.append(clock()-te)

    #-------------------------------------------------------
    te = clock()
    with open('raa.txt') as f_in:
        namesB1 = [ name for name in (l.strip() for l in f_in) if name ] # aaronasterling without list()
    B1.append(clock()-te)

    te = clock()
    with open('raa.txt') as f_in:
        namesB2 = [ name for name in (l[0:-1] for l in f_in) if name ] # aaronasterling without list() and with line[0:-1]
    B2.append(clock()-te)

    te = clock()
    with open('raa.txt') as f_in:
        namesBS = [ name for name in f_in.read().splitlines() if name ] # a list comprehension with read().splitlines()
    BS.append(clock()-te)

    #-------------------------------------------------------
    te = clock()
    with open('raa.txt') as f:
        xreg = re.findall('\S+',f.read()) #  eyquem
    reg.append(clock()-te)

    #-------------------------------------------------------
    te = clock()
    with open('raa.txt') as f_in:
        linesC1 = list(line for line in (l.strip() for l in f_in) if line) # aaronasterling
    C1.append(clock()-te)

    te = clock()
    with open('raa.txt') as f_in:
        linesC2 = list(line for line in (l[0:-1] for l in f_in) if line) # aaronasterling  with line[0:-1]
    C2.append(clock()-te)

    #-------------------------------------------------------
    te = clock()
    with open('raa.txt') as f_in:
        yD = [ line for line in nonblank_lines(f_in)  ] # aaronasterling  update
    D.append(clock()-te)

    te = clock()
    with open('raa.txt') as f_in:
        yDsh = [ name for name in short_nonblank_lines(f_in)  ] # nonblank_lines with line[0:-1]
    Dsh.append(clock()-te)

    #-------------------------------------------------------
    te = clock()
    with open('raa.txt') as f_in:
        linesF1 = filter(None, (line.rstrip() for line in f_in)) # aaronasterling update 2
    F1.append(clock()-te)

    te = clock()
    with open('raa.txt') as f_in:
        linesF2 = filter(None, (line[0:-1] for line in f_in)) # aaronasterling update 2 with line[0:-1]
    F2.append(clock()-te)

    te = clock()
    with open('raa.txt') as f_in:
        linesF3 =  filter(None, f_in.read().splitlines()) # aaronasterling update 2 with read().splitlines()
    F3.append(clock()-te)


print 'names_listA == names_listAA==namesB1==namesB2==namesBS==xreg\n  is ',\
       names_listA == names_listAA==namesB1==namesB2==namesBS==xreg
print 'names_listA == yD==yDsh==linesC1==linesC2==linesF1==linesF2==linesF3\n  is ',\
       names_listA == yD==yDsh==linesC1==linesC2==linesF1==linesF2==linesF3,'\n\n\n'


def displ((fr,it,what)):  print fr + str( min(it) )[0:7] + '   ' + what

map(displ,(('* ', A,    '[line.strip() for line in f if line.strip()]               * Felix Kling\n'),

           ('  ', B1,   '    [name for name in (l.strip() for l in f_in) if name ]    aaronasterling without list()'),
           ('* ', C1,   'list(line for line in (l.strip() for l in f_in) if line)   * aaronasterling\n'),          

           ('* ', reg,  're.findall("\S+",f.read())                                 * eyquem\n'),

           ('* ', D,    '[ line for line in       nonblank_lines(f_in)  ]           * aaronasterling  update'),
           ('  ', Dsh,  '[ line for line in short_nonblank_lines(f_in)  ]             nonblank_lines with line[0:-1]\n'),

           ('* ', F1 ,  'filter(None, (line.rstrip() for line in f_in))             * aaronasterling update 2\n'),

           ('  ', B2,   '    [name for name in (l[0:-1]   for l in f_in) if name ]    aaronasterling without list() and with line[0:-1]'),
           ('  ', C2,   'list(line for line in (l[0:-1]   for l in f_in) if line)     aaronasterling  with line[0:-1]\n'),

           ('  ', AA,   '[line[0:-1] for line in f if line[0:-1]  ]                   Felix Kling with line[0:-1]\n'),

           ('  ', BS,   '[name for name in f_in.read().splitlines() if name ]        a list comprehension with read().splitlines()\n'),

           ('  ', F2 ,  'filter(None, (line[0:-1] for line in f_in))                  aaronasterling update 2 with line[0:-1]'),

           ('  ', F3 ,  'filter(None, f_in.read().splitlines()                        aaronasterling update 2 with read().splitlines()'))
    )

Solution with regex is straightforward and neat. Though, it isn't among the fastest ones. The solution of aaronasterling with filter() is surprisigly fast for me (I wasn't aware of this particular filter()'s speed) and times of optimized solutions go down until 27 % of the biggest time. I wonder what makes the miracle of the filter-splitlines association:

names_listA == names_listAA==namesB1==namesB2==namesBS==xreg
  is  True
names_listA == yD==yDsh==linesC1==linesC2==linesF1==linesF2==linesF3
  is  True 



* 0.08266   [line.strip() for line in f if line.strip()]               * Felix Kling

  0.07535       [name for name in (l.strip() for l in f_in) if name ]    aaronasterling without list()
* 0.06912   list(line for line in (l.strip() for l in f_in) if line)   * aaronasterling

* 0.06612   re.findall("\S+",f.read())                                 * eyquem

* 0.06486   [ line for line in       nonblank_lines(f_in)  ]           * aaronasterling  update
  0.05264   [ line for line in short_nonblank_lines(f_in)  ]             nonblank_lines with line[0:-1]

* 0.05451   filter(None, (line.rstrip() for line in f_in))             * aaronasterling update 2

  0.04689       [name for name in (l[0:-1]   for l in f_in) if name ]    aaronasterling without list() and with line[0:-1]
  0.04582   list(line for line in (l[0:-1]   for l in f_in) if line)     aaronasterling  with line[0:-1]

  0.04171   [line[0:-1] for line in f if line[0:-1]  ]                   Felix Kling with line[0:-1]

  0.03265   [name for name in f_in.read().splitlines() if name ]        a list comprehension with read().splitlines()

  0.03638   filter(None, (line[0:-1] for line in f_in))                  aaronasterling update 2 with line[0:-1]
  0.02198   filter(None, f_in.read().splitlines()                        aaronasterling update 2 with read().splitlines()

But this problem is particular, the most simple of all: only one name in each line. So the solutions are only games with lines, splitings and [0:-1] cuts.

On the contrary, regex doesn't matter with lines, it straightforwardly finds the desired data: I consider it is a more natural way of resolution, applying from the simplest to the more complex cases, and hence is often the way to be prefered in treatments of texts.

EDIT

I forgot to say that I use Python 2.7 and I measured the above times with a file containing 500 times the following chain

SMITH
JONES
WILLIAMS
TAYLOR
BROWN
DAVIES
EVANS
WILSON
THOMAS
JOHNSON

ROBERTS
ROBINSON
THOMPSON
WRIGHT
WALKER
WHITE
EDWARDS
HUGHES
GREEN
HALL

LEWIS
HARRIS
CLARKE
PATEL
JACKSON
WOOD
TURNER
MARTIN
COOPER
HILL

WARD
MORRIS
MOORE
CLARK
LEE
KING
BAKER
HARRISON
MORGAN
ALLEN

JAMES
SCOTT
PHILLIPS
WATSON
DAVIS
PARKER
PRICE
BENNETT
YOUNG
GRIFFITHS

MITCHELL
KELLY
COOK
CARTER
RICHARDSON
BAILEY
COLLINS
BELL
SHAW
MURPHY

MILLER
COX
RICHARDS
KHAN
MARSHALL
ANDERSON
SIMPSON
ELLIS
ADAMS
SINGH

BEGUM
WILKINSON
FOSTER
CHAPMAN
POWELL
WEBB
ROGERS
GRAY
MASON
ALI

HUNT
HUSSAIN
CAMPBELL
MATTHEWS
OWEN
PALMER
HOLMES
MILLS
BARNES
KNIGHT

LLOYD
BUTLER
RUSSELL
BARKER
FISHER
STEVENS
JENKINS
MURRAY
DIXON
HARVEY

package main
import "fmt"
func main() {
  var x float64 = 5.7
  var y int = int(x)
  fmt.Println(y)  // outputs "5"
}

This solved my similar problem. I used it to revert the changes, then I added everything and commited changes in the terminal with

svn add folder_path/*
svn commit -m "message"

If you don't want duplicates in a Collection, you should consider why you're using a Collection that allows duplicates. The easiest way to remove repeated elements is to add the contents to a Set (which will not allow duplicates) and then add the Set back to the ArrayList:

Set<String> set = new HashSet<>(yourList);
yourList.clear();
yourList.addAll(set);

Of course, this destroys the ordering of the elements in the ArrayList.

@bku_drytt's solution didn't do it for me.

I solved it by additionally changing every occurence of 14.0 to 12.0 and v140 to v120 manually in the .vcxproj files.

Then it compiled!

Just for completeness, this also works

from IPython.core.pylabtools import figsize
figsize(14, 7)

It is a wrapper aroung the rcParams solution

var i2 = JsonConvert.DeserializeObject(obj["id"].ToString(), type);

throws a parsing exception due to missing quotes around the first argument (I think). I got it to work by adding the quotes:

var i2 = JsonConvert.DeserializeObject("\"" + obj["id"].ToString() + "\"", type);

Compare is unnecessary, Days / TotalDays are unnecessary.

All you need is

if (expireDate < DateTime.Now) {
    // has expired
} else {
    // not expired
}

note this will work if you decide to use minutes or months or even years as your expiry criteria.

You set the style per element and not by its content:

function init() { 
  document.getElementById("about").style.color = 'blue';
}

With innerHTML you get/set the content of an element. So if you would want to modify your title, innerHTML would be the way to go.

In your case, however, you just want to modify a property of the element (change the color of the text inside it), so you address the style property of the element itself.

It may also happen in the following case:

eg. if we consider the push function of a stack:

typedef struct stack
{
    int a[20];
    int head;
}stack;

void push(stack **s)
{
    int data;
    printf("Enter data:");
    scanf("%d",&(*s->a[++*s->head])); /* this is where the error is*/
}

main()
{
    stack *s;
    s=(stack *)calloc(1,sizeof(stack));
    s->head=-1;
    push(&s);
    return 0;
}

The error is in the push function and in the commented line. The pointer s has to be included within the parentheses. The correct code:

scanf("%d",&( (*s)->a[++(*s)->head]));

Once you’ve decided to change vim color scheme that you like, you’ll need to configure vim configuration file ~/.vimrc.

For e.g. to use the elflord color scheme just add these lines to your ~/.vimrc file:

colo elflord

For other names of color schemes you can look in /usr/share/vim/vimNN/colors where NN - version of VIM.

Convert using Jackson :

JSONObject obj = new JSONObject().put("abc", "pqr").put("xyz", 5);

Map<String, Object> map = new ObjectMapper().readValue(obj.toString(), new TypeReference<Map<String, Object>>() {});

Use -t on ls. e.g:.

ls -tr

or

ls -ltr

Official FAQ ( https://reactjs.org/docs/hooks-faq.html#is-there-something-like-forceupdate ) now recommends this way if you really need to do it:

  const [ignored, forceUpdate] = useReducer(x => x + 1, 0);

  function handleClick() {
    forceUpdate();
  }

Or you can use temporary array and then delete the real one if you want to change it while in cycle:

$array = array(0 => 'a', 1 => 'b', 2 => 'c');
$temp_array = $array[1];

unset($array[1]);
array_unshift($array , $temp_array);

the output will be:

array(0 => 'b', 1 => 'a', 2 => 'c')

and when are doing it while in cycle, you should clean $temp_array after appending item to array.

Actually only setTimeout is fine for that job and normally you cannot set exact delays with non determined methods as busy loops.

You can get the desired result with the code below. Two'H' in HH is for 24-hour format.

return fechaHora.Value.ToString("HH:mm");

The Host Header tells the webserver which virtual host to use (if set up). You can even have the same virtual host using several aliases (= domains and wildcard-domains). In this case, you still have the possibility to read that header manually in your web app if you want to provide different behavior based on different domains addressed. This is possible because in your webserver you can (and if I'm not mistaken you must) set up one vhost to be the default host. This default vhost is used whenever the host header does not match any of the configured virtual hosts.

That means: You get it right, although saying "multiple hosts" may be somewhat misleading: The host (the addressed machine) is the same, what really gets resolved to the IP address are different domain names (including subdomains) that are also referred to as hostnames (but not hosts!).

Although not part of the question, a fun fact: This specification led to problems with SSL in early days because the web server has to deliver the certificate that corresponds to the domain the client has addressed. However, in order to know what certificate to use, the webserver should have known the addressed hostname in advance. But because the client sends that information only over the encrypted channel (which means: after the certificate has already been sent), the server had to assume you browsed the default host. That meant one ssl-secured domain per IP address / port-combination.

This has been overcome with Server Name Indication; however, that again breaks some privacy, as the server name is now transferred in plain text again, so every man-in-the-middle would see which hostname you are trying to connect to.

Although the webserver would know the hostname from Server Name Indication, the Host header is not obsolete, because the Server Name Indication information is only used within the TLS handshake. With an unsecured connection, there is no Server Name Indication at all, so the Host header is still valid (and necessary).

Another fun fact: Most webservers (if not all) reject your HTTP request if it does not contain exactly one Host header, even if it could be omitted because there is only the default vhost configured. That means the minimum required information in an http-(get-)request is the first line containing METHOD RESOURCE and PROTOCOL VERSION and at least the Host header, like this:

GET /someresource.html HTTP/1.1
Host: www.example.com

In the MDN Documentation on the "Host" header they actually phrase it like this:

A Host header field must be sent in all HTTP/1.1 request messages. A 400 (Bad Request) status code will be sent to any HTTP/1.1 request message that lacks a Host header field or contains more than one.

As mentioned by Darrel Miller, the complete specs can be found in RFC7230.

You can create it manually but the default location of application.properties is here

If you are on a Windows machine and have the Git installed, you can try the below steps:

1. Go to the folder of Git installation, ex: C:\Program Files (x86)\Git\etc
2. Edit the file: gitconfig

3. Under the [http] section, add the line: sslVerify = false

   [http]
     sslVerify = false
   

Modern browsers

Plain JavaScript

If a DOM element which is removed is reference-free (no references pointing to it) then yes - the element itself is picked up by the garbage collector as well as any event handlers/listeners associated with it.

var a = document.createElement('div');
var b = document.createElement('p');
// Add event listeners to b etc...
a.appendChild(b);
a.removeChild(b);
b = null; 
// A reference to 'b' no longer exists 
// Therefore the element and any event listeners attached to it are removed.

However; if there are references that still point to said element, the element and its event listeners are retained in memory.

var a = document.createElement('div');
var b = document.createElement('p'); 
// Add event listeners to b etc...
a.appendChild(b);
a.removeChild(b); 
// A reference to 'b' still exists 
// Therefore the element and any associated event listeners are still retained.

jQuery

It would be fair to assume that the relevant methods in jQuery (such as remove()) would function in the exact same way (considering remove() was written using removeChild() for example).

However, this isn't true; the jQuery library actually has an internal method (which is undocumented and in theory could be changed at any time) called cleanData() (here is what this method looks like) which automatically cleans up all the data/events associated with an element upon removal from the DOM (be this via. remove(), empty(), html("") etc).

Older browsers

Older browsers - specifically older versions of IE - are known to have memory leak issues due to event listeners keeping hold of references to the elements they were attached to.

If you want a more in-depth explanation of the causes, patterns and solutions used to fix legacy IE version memory leaks, I fully recommend you read this MSDN article on Understanding and Solving Internet Explorer Leak Patterns.

A few more articles relevant to this:

• JScript memory leaks
• Memory leaks in IE8
• JavaScript Memory Leaks

Manually removing the listeners yourself would probably be a good habit to get into in this case (only if the memory is that vital to your application and you are actually targeting such browsers).

Jon's answer didn't work for me as I got a compiler error CS0453 C# The type must be a non-nullable value type in order to use it as parameter 'T' in the generic type or method

This worked for me though:

protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
    modelBuilder.Entity<SomeObject>().HasOptional(m => m.somefield);
    base.OnModelCreating(modelBuilder);
}

You are mixing the 1.5.6 version of the jcl bridge with the 1.6.0 version of the slf4j-api; this won't work because of a few changes in 1.6.0. Use the same versions for both, i.e. 1.6.1 (the latest). I use the jcl-over-slf4j bridge all the time and it works fine.