I feel your pain as I, too, am starting out to get Django and React.js working together. Did a couple of Django projects, and I think, React.js is a great match for Django. However, it can be intimidating to get started. We are standing on the shoulders of giants here ;)

Here's how I think, it all works together (big picture, please someone correct me if I'm wrong).

• Django and its database (I prefer Postgres) on one side (backend)
• Django Rest-framework providing the interface to the outside world (i.e. Mobile Apps and React and such)
• Reactjs, Nodejs, Webpack, Redux (or maybe MobX?) on the other side (frontend)

Communication between Django and 'the frontend' is done via the Rest framework. Make sure you get your authorization and permissions for the Rest framework in place.

I found a good boiler template for exactly this scenario and it works out of the box. Just follow the readme https://github.com/scottwoodall/django-react-template and once you are done, you have a pretty nice Django Reactjs project running. By no means this is meant for production, but rather as a way for you to dig in and see how things are connected and working!

One tiny change I'd like to suggest is this: Follow the setup instructions BUT before you get to the 2nd step to setup the backend (Django here https://github.com/scottwoodall/django-react-template/blob/master/backend/README.md), change the requirements file for the setup.

You'll find the file in your project at /backend/requirements/common.pip Replace its content with this

appdirs==1.4.0
Django==1.10.5
django-autofixture==0.12.0
django-extensions==1.6.1
django-filter==1.0.1
djangorestframework==3.5.3
psycopg2==2.6.1

this gets you the latest stable version for Django and its Rest framework.

I hope that helps.

In .NET5, I used DisplayTextFor without needing helper or extension methods:

@Html.DisplayTextFor(m => m.SomeEnumProperty)

Where SomeEnumProperty has a value of:

public enum MyEnum
{
    [Display(Name = "Not started")]
    NotStarted = 0,
    [Display(Name = "Weird display name instead of just 'Started'")]
    Started = 1,
}

It's not a Git error message, it's the editor as git uses your default editor.

To solve this:

1. press "i" (i for insert)
2. write your merge message
3. press "esc" (escape)
4. write ":wq" (write & quit)
5. then press enter

if (in_array($id,$user_access_arr)==0)
{
    $this->Session->setFlash(__('Access Denied! You are not eligible to access this.'), 'flash_custom_success');
    return $this->redirect(array('controller'=>'Dashboard','action'=>'index'));
}

Looks like you are trying to copy to a local machine with that command.

An example scp looks more like the command below:

Copy the file "foobar.txt" from the local host to a remote host

$ scp foobar.txt [email protected]:/some/remote/directory

scp "the_file" your_username@the_remote_host:the/path/to/the/directory

to send a directory:

Copy the directory "foo" from the local host to a remote host's directory "bar"

$ scp -r foo [email protected]:/some/remote/directory/bar

scp -r "the_directory_to_copy" your_username@the_remote_host:the/path/to/the/directory/to/copy/to

and to copy from remote host to local:

Copy the file "foobar.txt" from a remote host to the local host

$ scp [email protected]:foobar.txt /your/local/directory

scp your_username@the_remote_host:the_file /your/local/directory

and to include port number:

Copy the file "foobar.txt" from a remote host with port 8080 to the local host

$ scp -P 8080 [email protected]:foobar.txt /your/local/directory

scp -P port_number your_username@the_remote_host:the_file /your/local/directory

From a windows machine to linux machine using putty

pscp -r <directory_to_copy> username@remotehost:/path/to/directory/on/remote/host

Type 1: If statement style

{props.hasImage &&

  <MyImage />

}

Type 2: If else statement style

   {props.hasImage ?

      <MyImage /> :

      <OtherElement/>

    }

    List list1 = new ArrayList();
    list1.add("one");
    list1.add("three");
    list1.add("four");

    List list2 = new ArrayList();
    list2.add("one");
    list2.add("two");
    list2.add("three");
    list2.add("four");
    list2.add("five");


    list2.stream().filter( x -> !list1.contains(x) ).forEach(x -> System.out.println(x));

The output is:

two
five

try setting the body style to:

body { position:relative;}

it worked for me

Using the Window.URL API - https://developer.mozilla.org/en-US/docs/Web/API/Window/URL

Works with http(s), ports etc.

var url = new URL('/path/to/websocket', window.location.href);

url.protocol = url.protocol.replace('http', 'ws');

url.href // => ws://www.example.com:9999/path/to/websocket

class Countries < ActiveRecord::Base
    self.table_name = "cc"
end

In Rails 3.x this is the way to specify the table name.

Use fgets() to read a line from a file handle.

First alpha of eclipse word wrap released!

Got this answer from this post: How can I get word wrap to work in Eclipse PDT for PHP files?

Did they add a runtime List<> and/or Map<> type class to typepad 1.0

No, providing a runtime is not the focus of the TypeScript team.

is there a solid library out there someone wrote that provides this functionality?

I wrote (really just ported over buckets to typescript): https://github.com/basarat/typescript-collections

Update

JavaScript / TypeScript now support this natively and you can enable them with lib.d.ts : https://basarat.gitbooks.io/typescript/docs/types/lib.d.ts.html along with a polyfill if you want

I think better answer is here because it allows you to get even cutout height too.

Take your root view, and add setOnApplyWindowInsetsListener (or you can override onApplyWindowInsets from it), and take insets.getSystemWindowInsets from it.

In my camera activity, i add padding equal to the systemWindowInsetBottom to my bottom layout. And finally, it fix cutout issue.

with appcompat it is like this

ViewCompat.setOnApplyWindowInsetsListener(mCameraSourcePreview, (v, insets) -> {
    takePictureLayout.setPadding(0,0,0,insets.getSystemWindowInsetBottom());
    return insets.consumeSystemWindowInsets();
});

without appcompat, this:

mCameraSourcePreview.setOnApplyWindowInsetsListener((v, insets) -> { ... })

I am using Sequelize ORM 6.0.0 and am using "logging": false as the rest but posted my answer for latest version of the ORM.

const sequelize = new Sequelize(
        process.env.databaseName,
        process.env.databaseUser,
        process.env.password,
        {
            host: process.env.databaseHost,
            dialect: process.env.dialect,
            "logging": false,
            define: {
                // Table names won't be pluralized.
                freezeTableName: true,
                // All tables won't have "createdAt" and "updatedAt" Auto fields.
                timestamps: false
            }
        }
    );

Note: I am storing my secretes in a configuration file .env observing the 12-factor methodology.

Create a restart.bat file like this

@echo on
set once="C:\Program Files\MyService\once.bat"
set taskname=Restart_MyService
set service=MyService
echo rem %time% >%once%
echo net stop %service% >>%once%
echo net start %service% >>%once%
echo del %once% >>%once%

schtasks /create /ru "System" /tn %taskname% /tr '%once%' /sc onstart /F /V1 /Z
schtasks /run /tn %taskname%

Then delete the task %taskname% when your %service% starts

You also need to change the build.gradle file, and add the used Android SDK version into it:

implementation 'com.android.support:appcompat-v7:28.0.0'

This worked like a charm in my case.

Just use

$location.url();

Instead of

$location.path();

Here is my solution:

Implementation

class Node:
  def __init__(self, initdata):
    self.data = initdata
    self.next = None

  def get_data(self):
    return self.data

  def set_data(self, data):
    self.data = data

  def get_next(self):
    return self.next

  def set_next(self, node):
    self.next = node


# ------------------------ Link List class ------------------------------- #
class LinkList:

  def __init__(self):
    self.head = None

  def is_empty(self):
    return self.head == None

  def traversal(self, data=None):
    node = self.head
    index = 0
    found = False
    while node is not None and not found:
      if node.get_data() == data:
        found = True
      else:
        node = node.get_next()
        index += 1
    return (node, index)

  def size(self):
    _, count = self.traversal(None)
    return count

  def search(self, data):
    node, _ = self.traversal(data)
    return node

  def add(self, data):
    node = Node(data)
    node.set_next(self.head)
    self.head = node

  def remove(self, data):
    previous_node = None
    current_node = self.head
    found = False
    while current_node is not None and not found:
      if current_node.get_data() == data:
        found = True
        if previous_node:
          previous_node.set_next(current_node.get_next())
        else:
          self.head = current_node
      else:
        previous_node = current_node
        current_node = current_node.get_next()
    return found

Usage

link_list = LinkList()
link_list.add(10)
link_list.add(20)
link_list.add(30)
link_list.add(40)
link_list.add(50)
link_list.size()
link_list.search(30)
link_list.remove(20)

Original Implementation Idea

http://interactivepython.org/runestone/static/pythonds/BasicDS/ImplementinganUnorderedListLinkedLists.html

if (!"success".equals(statusCheck))

TL;DR

You want this:

AAPL:
  - shares: -75.088
    date: 11/27/2015
  - shares: 75.088
    date: 11/26/2015

Mappings

The YAML equivalent of a JSON object is a mapping, which looks like these:

# flow style
{ foo: 1, bar: 2 }

# block style
foo: 1
bar: 2

Note that the first characters of the keys in a block mapping must be in the same column. To demonstrate:

# OK
   foo: 1
   bar: 2

# Parse error
   foo: 1
    bar: 2

Sequences

The equivalent of a JSON array in YAML is a sequence, which looks like either of these (which are equivalent):

# flow style
[ foo bar, baz ]

# block style
- foo bar
- baz

In a block sequence the -s must be in the same column.

JSON to YAML

Let's turn your JSON into YAML. Here's your JSON:

{"AAPL": [
  {
    "shares": -75.088,
    "date": "11/27/2015"
  },
  {
    "shares": 75.088,
    "date": "11/26/2015"
  },
]}

As a point of trivia, YAML is a superset of JSON, so the above is already valid YAML—but let's actually use YAML's features to make this prettier.

Starting from the inside out, we have objects that look like this:

{
  "shares": -75.088,
  "date": "11/27/2015"
}

The equivalent YAML mapping is:

shares: -75.088
date: 11/27/2015

We have two of these in an array (sequence):

- shares: -75.088
  date: 11/27/2015
- shares: 75.088
  date: 11/26/2015

Note how the -s line up and the first characters of the mapping keys line up.

Finally, this sequence is itself a value in a mapping with the key AAPL:

AAPL:
  - shares: -75.088
    date: 11/27/2015
  - shares: 75.088
    date: 11/26/2015

Parsing this and converting it back to JSON yields the expected result:

{
  "AAPL": [
    {
      "date": "11/27/2015", 
      "shares": -75.088
    }, 
    {
      "date": "11/26/2015", 
      "shares": 75.088
    }
  ]
}

You can see it (and edit it interactively) here.

If you give default values to all the fields - empty constructor is generated automatically by Kotlin.

data class User(var id: Long = -1,
                var uniqueIdentifier: String? = null)

and you can simply call:

val user = User()

$this->getDoctrine()->getRepository('MyBundle:MyTable')->findBy([], ['username' => 'ASC']);

I think the Wikipedia-article on Deprecation answers this one pretty well:

In the process of authoring computer software, its standards or documentation, deprecation is a status applied to software features to indicate that they should be avoided, typically because they have been superseded. Although deprecated features remain in the software, their use may raise warning messages recommending alternative practices, and deprecation may indicate that the feature will be removed in the future. Features are deprecated—rather than immediately removed—in order to provide backward compatibility, and give programmers who have used the feature time to bring their code into compliance with the new standard.

int Random = (int)(Math.random()*100);

if You need to generate more than one value, then just use for loop for that

 for (int i = 1; i <= 10 ; i++)
       {
        int Random = (int)(Math.random()*100);
        System.out.println(Random);
       }

If You want to specify a more decent range, like from 10 to 100 ( both are in the range )

so the code would be :

   int Random =10 +  (int)(Math.random()*(91));
   /* int Random = (min.value ) + (int)(Math.random()* ( Max - Min + 1));
  *Where min is the smallest value You want to be the smallest number possible to       
  generate and Max is the biggest possible number to generate*/

Here is a great chrome extension to bulk delete your slack channel/group/im messages - https://slackext.com/deleter , where you can filter the messages by star, time range, or users. BTW, it also supports load all messages in recent version, then you can load your ~8k messages as you need.

Yes, why not? Then CSS that applies to class "x" AND CSS that applies to ID "y" applies to the div.

First of all, You can verify this on your own by writing a simple TestCase!

empty Arraylist (with nulls as its items)

Second, If ArrayList is EMPTY that means it is really empty, it cannot have NULL or NON-NULL things as element.

Third,

 List list  = new ArrayList();
    list.add(null);
    System.out.println(list == null)

would print false.

as the official site says: "jQuery: The Write Less, Do More, JavaScript Library"

try to translate the following jQuery code without any library

$("p.neat").addClass("ohmy").show("slow");

World of Warcraft's engine seems all right, and it uses Lua. :)

Use _member_names_ for a quick easy result if it is just the names, i.e.

Color._member_names_

Also, you have _member_map_ which returns an ordered dictionary of the elements. This function returns a collections.OrderedDict, so you have Color._member_names_.items() and Color._member_names_.values() to play with. E.g.

return list(map(lambda x: x.value, Color._member_map_.values()))

will return all the valid values of Color

By default, CORS does not include cookies on cross-origin requests. This is different from other cross-origin techniques such as JSON-P. JSON-P always includes cookies with the request, and this behavior can lead to a class of vulnerabilities called cross-site request forgery, or CSRF.

In order to reduce the chance of CSRF vulnerabilities in CORS, CORS requires both the server and the client to acknowledge that it is ok to include cookies on requests. Doing this makes cookies an active decision, rather than something that happens passively without any control.

The client code must set the withCredentials property on the XMLHttpRequest to true in order to give permission.

However, this header alone is not enough. The server must respond with the Access-Control-Allow-Credentials header. Responding with this header to true means that the server allows cookies (or other user credentials) to be included on cross-origin requests.

You also need to make sure your browser isn't blocking third-party cookies if you want cross-origin credentialed requests to work.

Note that regardless of whether you are making same-origin or cross-origin requests, you need to protect your site from CSRF (especially if your request includes cookies).

Here there is an explanation: http://bytes.com/topic/python/answers/444733-why-there-no-post-pre-increment-operator-python

However the absence of this operator is in the python philosophy increases consistency and avoids implicitness.

In addition, this kind of increments are not widely used in python code because python have a strong implementation of the iterator pattern plus the function enumerate.

You can use the path module to join the path of the directory in which helper1.js lives to the relative path of foobar.json. This will give you the absolute path to foobar.json.

var fs = require('fs');
var path = require('path');

var jsonPath = path.join(__dirname, '..', 'config', 'dev', 'foobar.json');
var jsonString = fs.readFileSync(jsonPath, 'utf8');

This should work on Linux, OSX, and Windows assuming a UTF8 encoding.

It’s just <b> instead of <bold>:

Some <b>text</b> that I want bolded.

Note that <b> just changes the appearance of the text. If you want to render it bold because you want to express a strong emphasis, you should better use the <strong> element.

What @VonC says is correct, but you can put the commands to set debug directly into VM arguments on jBoss Launch.

To do that, open jBoss server inside Eclipse, go to Open launch configuration and put this in VM arguments textbox: vm args

I've found that the best way to debug is to use the microsoft tool called DTCPing

1. Copy the file to both the server (DB) and the client (Application server/client pc)
   • Start it at the server and the client
   • At the server: fill in the client netbios computer name and try to setup a DTC connection
   • Restart both applications.
   • At the client: fill in the server netbios computer name and try to setup a DTC connection

I've had my fare deal of problems in our old company network, and I've got a few tips:

• if you get the error message "Gethostbyname failed" it means the computer can not find the other computer by its netbios name. The server could for instance resolve and ping the client, but that works on a DNS level. Not on a netbios lookup level. Using WINS servers or changing the LMHOST (dirty) will solve this problem.
• if you get an error "Acces Denied", the security settings don't match. You should compare the security tab for the msdtc and get the server and client to match. One other thing to look at is the RestrictRemoteClients value. Depending on your OS version and more importantly the Service Pack, this value can be different.
• Other connection problems:
  • The firewall between the server and the client must allow communication over port 135. And more importantly the connection can be initiated from both sites (I had a lot of problems with the firewall people in my company because they assumed only the server would open an connection on to that port)
  • The protocol returns a random port to connect to for the real transaction communication. Firewall people don't like that, they like to restrict the ports to a certain range. You can restrict the RPC dynamic port generation to a certain range using the keys as described in How to configure RPC dynamic port allocation to work with firewalls.

In my experience, if the DTCPing is able to setup a DTC connection initiated from the client and initiated from the server, your transactions are not the problem any more.

Apple simply recommends declaring an isX getter for stylistic purposes. It doesn't matter whether you customize the getter name or not, as long as you use the dot notation or message notation with the correct name. If you're going to use the dot notation it makes no difference, you still access it by the property name:

@property (nonatomic, assign) BOOL working;

[self setWorking:YES];         // Or self.working = YES;
BOOL working = [self working]; // Or = self.working;

Or

@property (nonatomic, assign, getter=isWorking) BOOL working;

[self setWorking:YES];           // Or self.working = YES;, same as above
BOOL working = [self isWorking]; // Or = self.working;, also same as above

Something simpler and effective for anything :

function getNum(val) {
   val = +val || 0
   return val;
}

...which will convert a from any "falsey" value to 0.

The "falsey" values are:

• false
• null
• undefined
• 0
• "" ^{( empty string )}
• NaN ^{( Not a Number )}

Many timestamps have an implied timezone. To ensure that your code will work in every timezone, you should use UTC internally and attach a timezone each time a foreign object enters the system.

Python 3.2+:

>>> datetime.datetime.strptime(
...     "March 5, 2014, 20:13:50", "%B %d, %Y, %H:%M:%S"
... ).replace(tzinfo=datetime.timezone(datetime.timedelta(hours=-3)))

The default behavior is:

1. If the parameter is a primitive type (int, bool, double, ...), Web API tries to get the value from the URI of the HTTP request.

2. For complex types (your own object, for example: Person), Web API tries to read the value from the body of the HTTP request.

So, if you have:

• a primitive type in the URI, or
• a complex type in the body

...then you don't have to add any attributes (neither [FromBody] nor [FromUri]).

But, if you have a primitive type in the body, then you have to add [FromBody] in front of your primitive type parameter in your WebAPI controller method. (Because, by default, WebAPI is looking for primitive types in the URI of the HTTP request.)

Or, if you have a complex type in your URI, then you must add [FromUri]. (Because, by default, WebAPI is looking for complex types in the body of the HTTP request by default.)

Primitive types:

public class UsersController : ApiController
{
    // api/users
    public HttpResponseMessage Post([FromBody]int id)
    {

    }
    // api/users/id
    public HttpResponseMessage Post(int id)
    {

    }       
}

Complex types:

public class UsersController : ApiController
{       
    // api/users
    public HttpResponseMessage Post(User user)
    {

    }

    // api/users/user
    public HttpResponseMessage Post([FromUri]User user)
    {

    }       
}

This works as long as you send only one parameter in your HTTP request. When sending multiple, you need to create a custom model which has all your parameters like this:

public class MyModel
{
    public string MyProperty { get; set; }
    public string MyProperty2 { get; set; }
}

[Route("search")]
[HttpPost]
public async Task<dynamic> Search([FromBody] MyModel model)
{
    // model.MyProperty;
    // model.MyProperty2;
}

From Microsoft's documentation for parameter binding in ASP.NET Web API:

When a parameter has [FromBody], Web API uses the Content-Type header to select a formatter. In this example, the content type is "application/json" and the request body is a raw JSON string (not a JSON object). At most one parameter is allowed to read from the message body.

This should work:

public HttpResponseMessage Post([FromBody] string name) { ... }

This will not work:

// Caution: This won't work!    
public HttpResponseMessage Post([FromBody] int id, [FromBody] string name) { ... }

The reason for this rule is that the request body might be stored in a non-buffered stream that can only be read once.

I agree with the current answers, but in my case it does not work, I hope this code help someone in the future:

// check
$('#checkbox_id').click()

I solved the Access-Control-Allow-Origin error modifying the dataType parameter to dataType:'jsonp' and adding a crossDomain:true

$.ajax({

    url: 'https://www.googleapis.com/moderator/v1/series?key='+key,
    data: myData,
    type: 'GET',
    crossDomain: true,
    dataType: 'jsonp',
    success: function() { alert("Success"); },
    error: function() { alert('Failed!'); },
    beforeSend: setHeader
});

You have to click and hold until the other icon shows up, then slide the mouse down to the icon.

Here are a few options for changing text / label sizes

library(ggplot2)

# Example data using mtcars

a <- aggregate(mpg ~ vs + am , mtcars, function(i) round(mean(i)))

p <- ggplot(mtcars, aes(factor(vs), y=mpg, fill=factor(am))) + 
            geom_bar(stat="identity",position="dodge") + 
            geom_text(data = a, aes(label = mpg), 
                            position = position_dodge(width=0.9),  size=20)

The size in the geom_text changes the size of the geom_text labels.

p <- p + theme(axis.text = element_text(size = 15)) # changes axis labels

p <- p + theme(axis.title = element_text(size = 25)) # change axis titles

p <- p + theme(text = element_text(size = 10)) # this will change all text size 
                                                             # (except geom_text)

For this And why size of 10 in geom_text() is different from that in theme(text=element_text()) ?

Yes, they are different. I did a quick manual check and they appear to be in the ratio of ~ (14/5) for geom_text sizes to theme sizes.

So a horrible fix for uniform sizes is to scale by this ratio

geom.text.size = 7
theme.size = (14/5) * geom.text.size

ggplot(mtcars, aes(factor(vs), y=mpg, fill=factor(am))) + 
  geom_bar(stat="identity",position="dodge") + 
  geom_text(data = a, aes(label = mpg), 
            position = position_dodge(width=0.9),  size=geom.text.size) + 
  theme(axis.text = element_text(size = theme.size, colour="black")) 

This of course doesn't explain why? and is a pita (and i assume there is a more sensible way to do this)

This should work same :

SELECT MAX(salary) max_salary,
  (SELECT MAX(salary)
   FROM Employee
   WHERE salary NOT IN
       (SELECT MAX(salary)
        FROM Employee)) 2nd_max_salary
FROM Employee

(Note: although the cloning version is potentially useful, for a simple shallow copy the constructor I mention in the other post is a better option.)

How deep do you want the copy to be, and what version of .NET are you using? I suspect that a LINQ call to ToDictionary, specifying both the key and element selector, will be the easiest way to go if you're using .NET 3.5.

For instance, if you don't mind the value being a shallow clone:

var newDictionary = oldDictionary.ToDictionary(entry => entry.Key,
                                               entry => entry.Value);

If you've already constrained T to implement ICloneable:

var newDictionary = oldDictionary.ToDictionary(entry => entry.Key, 
                                               entry => (T) entry.Value.Clone());

(Those are untested, but should work.)

This should work:

for /F "tokens=*" %i in ('temperature') do prismcom.exe usb %i

If running in a batch file, you need to use %%i instead of just %i (in both places).

The way I know how to convert an integer into a string is by using the following code:

Integer.toString(int);

and

String.valueOf(int);

If you had an integer i, and a string s, then the following would apply:

int i;
String s = Integer.toString(i); or
String s = String.valueOf(i);

If you wanted to convert a string "s" into an integer "i", then the following would work:

i = Integer.valueOf(s).intValue();

Have you looked into rasdial?

Just incase anyone wanted to do this and finds this in the future, you can use rasdial.exe from command prompt to connect to a VPN network

ie rasdial "VPN NETWORK NAME" "Username" *

it will then prompt for a password, else you can use "username" "password", this is however less secure

_{http://www.msfn.org/board/topic/113128-connect-to-vpn-from-cmdexe-vista/?p=747265}

I've faced this issue a couple of times and following the below steps has resolved both the times. 1. Navigate to C:\Users\ 2. locate the ".m2" folder and delete it.

3. Now navigate to the particular project in eclipse and Right-click on the project > Maven > Update Project

wait until the project is updated and in my case following the above steps resolved both the times.

LESS has guard expressions for mixins, not individual attributes.

So you'd create a mixin like this:

.debug(@debug) when (@debug = true) {
    header {
      background-color: yellow;
      #title {
          background-color: orange;
      }
    }

    article {
      background-color: red;
    }
}

And turn it on or off by calling .debug(true); or .debug(false) (or not calling it at all).

Since C++17 you can use range-based for loops together with structured bindings for iterating over your map. This improves readability, as you reduce the amount of needed first and second members in your code:

std::map<std::string, std::pair<std::string, std::string>> myMap;
myMap["x"] = { "a", "b" };
myMap["y"] = { "c", "d" };

for (const auto &[k, v] : myMap)
    std::cout << "m[" << k << "] = (" << v.first << ", " << v.second << ") " << std::endl;

Output:

m[x] = (a, b)
m[y] = (c, d)

Code on Coliru

These appear to be seconds since epoch.

In [20]: df = DataFrame(data['values'])

In [21]: df.columns = ["date","price"]

In [22]: df
Out[22]: 
<class 'pandas.core.frame.DataFrame'>
Int64Index: 358 entries, 0 to 357
Data columns (total 2 columns):
date     358  non-null values
price    358  non-null values
dtypes: float64(1), int64(1)

In [23]: df.head()
Out[23]: 
         date  price
0  1349720105  12.08
1  1349806505  12.35
2  1349892905  12.15
3  1349979305  12.19
4  1350065705  12.15
In [25]: df['date'] = pd.to_datetime(df['date'],unit='s')

In [26]: df.head()
Out[26]: 
                 date  price
0 2012-10-08 18:15:05  12.08
1 2012-10-09 18:15:05  12.35
2 2012-10-10 18:15:05  12.15
3 2012-10-11 18:15:05  12.19
4 2012-10-12 18:15:05  12.15

In [27]: df.dtypes
Out[27]: 
date     datetime64[ns]
price           float64
dtype: object

The %d and %s string formatting "commands" are used to format strings. The %d is for numbers, and %s is for strings.

For an example:

print("%s" % "hi")

and

print("%d" % 34.6)

To pass multiple arguments:

print("%s %s %s%d" % ("hi", "there", "user", 123456)) will return hi there user123456

Here are some exchange APIs with PHP example.

[ Open Exchange Rates API ]

Provides 1,000 requests per month free. You must register and grab the App ID. The base currency USD for free account. Check the supported currencies and documentation.

// open exchange URL // valid app_id * REQUIRED *
$exchange_url = 'https://openexchangerates.org/api/latest.json';
$params = array(
    'app_id' => 'YOUR_APP_ID'
);

// make cURL request // parse JSON
$curl = curl_init();
curl_setopt_array($curl, array(
    CURLOPT_URL => $exchange_url . '?' . http_build_query($params),
    CURLOPT_RETURNTRANSFER => true
));
$response = json_decode(curl_exec($curl));
curl_close($curl);

if (!empty($response->rates)) {
    // convert 150 USD to JPY ( Japanese Yen )
    echo $response->rates->JPY * 150;
}

150 USD = 18039.09015 JPY

[ Currency Layer API ]

Provides 1,000 requests per month free. You must register and grab the Access KEY. Custom base currency is not supported in free account. Check the documentation.

$exchange_url = 'http://apilayer.net/api/live';
$params = array(
    'access_key' => 'YOUR_ACCESS_KEY',
    'source' => 'USD',
    'currencies' => 'JPY',
    'format' => 1 // 1 = JSON
);

// make cURL request // parse JSON
$curl = curl_init();
curl_setopt_array($curl, array(
    CURLOPT_URL => $exchange_url . '?' . http_build_query($params),
    CURLOPT_RETURNTRANSFER => true
));
$response = json_decode(curl_exec($curl));
curl_close($curl);

if (!empty($response->quotes)) {
    // convert 150 USD to JPY ( Japanese Yen )
    echo '150 USD = ' . $response->quotes->USDJPY * 150 . ' JPY';
}

150 USD = 18036.75045 JPY

This is how I would go about this:

1. Start a ServerSocket listening (probably on port 80).
2. Once you get a connection request, accept and pass to another thread/process (this leaves your ServerSocket available to keep listening and accept other connections).
3. Parse the request text (specifically, the headers where you will see if it is a GET or POST, and the parameters passed.
4. Answer with your own headers (Content-Type, etc.) and the HTML.

I find it useful to use Firebug (in Firefox) to see examples of headers. This is what you want to emulate.

Try this link: - Multithreaded Server in Java

Here's a pretty decent pattern.

For debugging: When an error is raised, hit Ctrl-Break (or Ctrl-Pause), drag the break marker (or whatever it's called) down to the Resume line, hit F8 and you'll step to the line that "threw" the error.

The ExitHandler is your "Finally".

Hourglass will be killed every time. Status bar text will be cleared every time.

Public Sub ErrorHandlerExample()
    Dim dbs As DAO.Database
    Dim rst As DAO.Recordset

    On Error GoTo ErrHandler
    Dim varRetVal As Variant

    Set dbs = CurrentDb
    Set rst = dbs.OpenRecordset("SomeTable", dbOpenDynaset, dbSeeChanges + dbFailOnError)

    Call DoCmd.Hourglass(True)

    'Do something with the RecordSet and close it.

    Call DoCmd.Hourglass(False)

ExitHandler:
    Set rst = Nothing
    Set dbs = Nothing
    Exit Sub

ErrHandler:
    Call DoCmd.Hourglass(False)
    Call DoCmd.SetWarnings(True)
    varRetVal = SysCmd(acSysCmdClearStatus)

    Dim errX As DAO.Error
    If Errors.Count > 1 Then
       For Each errX In DAO.Errors
          MsgBox "ODBC Error " & errX.Number & vbCrLf & errX.Description
       Next errX
    Else
        MsgBox "VBA Error " & Err.Number & ": " & vbCrLf & Err.Description & vbCrLf & "In: Form_MainForm", vbCritical
    End If

    Resume ExitHandler
    Resume

End Sub



    Select Case Err.Number
        Case 3326 'This Recordset is not updateable
            'Do something about it. Or not...
        Case Else
            MsgBox "VBA Error " & Err.Number & ": " & vbCrLf & Err.Description & vbCrLf & "In: Form_MainForm", vbCritical
    End Select

It also traps for both DAO and VBA errors. You can put a Select Case in the VBA error section if you want to trap for specific Err numbers.

Select Case Err.Number
    Case 3326 'This Recordset is not updateable
        'Do something about it. Or not...
    Case Else
        MsgBox "VBA Error " & Err.Number & ": " & vbCrLf & Err.Description & vbCrLf & "In: Form_MainForm", vbCritical
End Select

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

Here's the correct code (in Java);

package test;

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

public class GZipTest {

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

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

The two alternative you gave are semantically identical, but using make([]int, 0) will result in an internal call to runtime.makeslice (Go 1.14).

You also have the option to leave it with a nil value:

var myslice []int

As written in the Golang.org blog:

a nil slice is functionally equivalent to a zero-length slice, even though it points to nothing. It has length zero and can be appended to, with allocation.

A nil slice will however json.Marshal() into "null" whereas an empty slice will marshal into "[]", as pointed out by @farwayer.

None of the above options will cause any allocation, as pointed out by @ArmanOrdookhani.

You can use @@ROWCOUNT to check whether row should be inserted or updated:

update table1 
set name = 'val2', itemname = 'val3', itemcatName = 'val4', itemQty = 'val5'
where id = 'val1'
if @@ROWCOUNT = 0
insert into table1(id, name, itemname, itemcatName, itemQty)
values('val1', 'val2', 'val3', 'val4', 'val5')

in this case if update fails, the new row will be inserted

This would be easy to do :

<iframe width="420" height="345"
src="http://www.youtube.com/embed/XGSy3_Czz8k">
</iframe>

Is just an example.

I was struggling with this - you can style the background of the dialog using android:alertDialogStyle="@style/AlertDialog" in your theme, but it ignores any text settings you have. As @rflexor said above it cannot be done with the SDK prior to Honeycomb (well you could use Reflection).

My solution, in a nutshell, was to style the background of the dialog using the above, then set a custom title and content view (using layouts that are the same as those in the SDK).

My wrapper:

import com.mypackage.R;

import android.app.AlertDialog;
import android.content.Context;
import android.graphics.drawable.Drawable;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;

public class CustomAlertDialogBuilder extends AlertDialog.Builder {

    private final Context mContext;
    private TextView mTitle;
    private ImageView mIcon;
    private TextView mMessage;

    public CustomAlertDialogBuilder(Context context) {
        super(context);
        mContext = context; 

        View customTitle = View.inflate(mContext, R.layout.alert_dialog_title, null);
        mTitle = (TextView) customTitle.findViewById(R.id.alertTitle);
        mIcon = (ImageView) customTitle.findViewById(R.id.icon);
        setCustomTitle(customTitle);

        View customMessage = View.inflate(mContext, R.layout.alert_dialog_message, null);
        mMessage = (TextView) customMessage.findViewById(R.id.message);
        setView(customMessage);
    }

    @Override
    public CustomAlertDialogBuilder setTitle(int textResId) {
        mTitle.setText(textResId);
        return this;
    }
    @Override
    public CustomAlertDialogBuilder setTitle(CharSequence text) {
        mTitle.setText(text);
        return this;
    }

    @Override
    public CustomAlertDialogBuilder setMessage(int textResId) {
        mMessage.setText(textResId);
        return this;
    }

    @Override
    public CustomAlertDialogBuilder setMessage(CharSequence text) {
        mMessage.setText(text);
        return this;
    }

    @Override
    public CustomAlertDialogBuilder setIcon(int drawableResId) {
        mIcon.setImageResource(drawableResId);
        return this;
    }

    @Override
    public CustomAlertDialogBuilder setIcon(Drawable icon) {
        mIcon.setImageDrawable(icon);
        return this;
    }

}

alert_dialog_title.xml (taken from the SDK)

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    >
    <LinearLayout
            android:id="@+id/title_template"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
            android:gravity="center_vertical"
            android:layout_marginTop="6dip"
            android:layout_marginBottom="9dip"
            android:layout_marginLeft="10dip"
            android:layout_marginRight="10dip">

            <ImageView android:id="@+id/icon"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="top"
                android:paddingTop="6dip"
                android:paddingRight="10dip"
                android:src="@drawable/ic_dialog_alert" />
            <TextView android:id="@+id/alertTitle"
                style="@style/?android:attr/textAppearanceLarge"
                android:singleLine="true"
                android:ellipsize="end"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content" />
        </LinearLayout>
        <ImageView android:id="@+id/titleDivider"
            android:layout_width="fill_parent"
            android:layout_height="1dip"
            android:scaleType="fitXY"
            android:gravity="fill_horizontal"
            android:src="@drawable/divider_horizontal_bright" />
</LinearLayout>

alert_dialog_message.xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
            android:id="@+id/scrollView"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:paddingTop="2dip"
            android:paddingBottom="12dip"
            android:paddingLeft="14dip"
            android:paddingRight="10dip">
    <TextView android:id="@+id/message"
                style="?android:attr/textAppearanceMedium"
                android:textColor="@color/dark_grey"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:padding="5dip" />
</ScrollView>

Then just use CustomAlertDialogBuilder instead of AlertDialog.Builder to create your dialogs, and just call setTitle and setMessage as usual.

After several hours of test and research over the Internet, I've finally found how to start my PowerShell script with task scheduler, thanks to the video Scheduling a PowerShell Script using Windows Task Scheduler by Jack Fruh @sharepointjack.

Program/script -> put full path through powershell.exe

C:\WINDOWS\system32\WindowsPowerShell\v1.0\powershell.exe

Add arguments -> Full path to the script, and the script, without any " ".

Start in (optional) -> The directory where your script resides, without any " ".

Firstly I embed the console application solution into the windows service solution and reference it.

Then I make the console application Program class public

/// <summary>
/// Hybrid service/console application
/// </summary>
public class Program
{
}

I then create two functions within the console application

    /// <summary>
    /// Used to start as a service
    /// </summary>
    public void Start()
    {
        Main();
    }

    /// <summary>
    /// Used to stop the service
    /// </summary>
    public void Stop()
    {
       if (Application.MessageLoop)
            Application.Exit();   //windows app
        else
            Environment.Exit(1);  //console app
    }

Then within the windows service itself I instantiate the Program and call the Start and Stop functions added within the OnStart and OnStop. See below

class WinService : ServiceBase
{
    readonly Program _application = new Program();

    /// <summary>
    /// The main entry point for the application.
    /// </summary>
    static void Main()
    {
        ServiceBase[] servicesToRun = { new WinService() };
        Run(servicesToRun);
    }

    /// <summary>
    /// Set things in motion so your service can do its work.
    /// </summary>
    protected override void OnStart(string[] args)
    {
        Thread thread = new Thread(() => _application.Start());
        thread.Start();
    }

    /// <summary>
    /// Stop this service.
    /// </summary>
    protected override void OnStop()
    {
        Thread thread = new Thread(() => _application.Stop());
        thread.Start();
    }
}

This approach can also be used for a windows application / windows service hybrid

No need to create overload methods, just use one single method with params as shown below

// Call params method with one to four integer constant parameters.
//
int sum0 = addTwoEach();
int sum1 = addTwoEach(1);
int sum2 = addTwoEach(1, 2);
int sum3 = addTwoEach(3, 3, 3);
int sum4 = addTwoEach(2, 2, 2, 2);

Yes, encryption add some load to your cpu, but if your cpu is not ancient that should not affect as much as you say.

If you enable compression for SSH, SCP is actually faster than FTP despite the SSH encryption (if I remember, twice as fast as FTP for the files I tried). I haven't actually used SFTP, but I believe it uses SCP for the actual file transfer. So please try this and let us know :-)

It's like this:

$('.tag.clickedTag').click(function (){ 
 // this will catch with two classes
}

$('.tag.clickedTag.otherclass').click(function (){ 
 // this will catch with three classes
}

$('.tag:not(.clickedTag)').click(function (){ 
 // this will catch tag without clickedTag
}

You can apply a centering to any View, including a Layout, by using the XML attribute android:layout_gravity". You probably want to give it the value "center".

You can find a reference of possible values for this option here: http://developer.android.com/reference/android/widget/LinearLayout.LayoutParams.html#attr_android:layout_gravity

I wonder that no one used position: absolute with position: relative

So, another solution would be:

HTML

<header>
  <div id="left"><input type="text"></div>
  <div id="right">Menu1 Menu2 Menu3</div>
</header>

CSS

header { position: relative;  }
#left {
    width: 160px;
    height: 25px;
}
#right {
    position: absolute;
    top: 0px;
    left: 160px;
    right: 0px;
    height: 25px;
}

Jsfiddle example

If we need only one column to be numeric

yyz$b <- as.numeric(as.character(yyz$b))

But, if all the columns needs to changed to numeric, use lapply to loop over the columns and convert to numeric by first converting it to character class as the columns were factor.

yyz[] <- lapply(yyz, function(x) as.numeric(as.character(x)))

Both the columns in the OP's post are factor because of the string "n/a". This could be easily avoided while reading the file using na.strings = "n/a" in the read.table/read.csv or if we are using data.frame, we can have character columns with stringsAsFactors=FALSE (the default is stringsAsFactors=TRUE)

Regarding the usage of apply, it converts the dataset to matrix and matrix can hold only a single class. To check the class, we need

lapply(yyz, class)

Or

sapply(yyz, class)

Or check

str(yyz)

Promo graphic

The promo graphic is used for promotions on older versions of the Android OS (earlier than 4.0). This image is not required to submit an update for your Store Listing.

Requirements

• JPG or 24-bit PNG (no alpha)
• Dimensions: 180px by 120px

https://support.google.com/googleplay/android-developer/answer/1078870

How about something like this?

<html>
<head>
<script type="text/javascript">

var HoverListener = {
  addElem: function( elem, callback, delay )
  {
    if ( delay === undefined )
    {
      delay = 1000;
    }

    var hoverTimer;

    addEvent( elem, 'mouseover', function()
    {
      hoverTimer = setTimeout( callback, delay );
    } );

    addEvent( elem, 'mouseout', function()
    {
      clearTimeout( hoverTimer );
    } );
  }
}

function tester()
{
  alert( 'hi' );
}

//  Generic event abstractor
function addEvent( obj, evt, fn )
{
  if ( 'undefined' != typeof obj.addEventListener )
  {
    obj.addEventListener( evt, fn, false );
  }
  else if ( 'undefined' != typeof obj.attachEvent )
  {
    obj.attachEvent( "on" + evt, fn );
  }
}

addEvent( window, 'load', function()
{
  HoverListener.addElem(
      document.getElementById( 'test' )
    , tester 
  );
  HoverListener.addElem(
      document.getElementById( 'test2' )
    , function()
      {
        alert( 'Hello World!' );
      }
    , 2300
  );
} );

</script>
</head>
<body>
<div id="test">Will alert "hi" on hover after one second</div>
<div id="test2">Will alert "Hello World!" on hover 2.3 seconds</div>
</body>
</html>

Why don't you use ACL's to distinguish traffic? on top of my head:

acl go_sslwebserver path bar
use_backend sslwebserver if go_sslwebserver

This goes on top of what Matthew Brown answered.

See the ha docs , search for things like hdr_dom and below to find more ACL options. There are plenty of choices.

Try to use android:scaleType="fitXY" in i-Imagebutton xml

I too faced such scenario where I had to run a web app in nodejs with index.html being the entry point. Here is what I did:

• run node init in root of app (this will create a package.json file)
• install express in root of app : npm install --save express (save will update package.json with express dependency)
• create a public folder in root of your app and put your entry point file (index.html) and all its dependent files (this is just for simplification, in large application this might not be a good approach).
• Create a server.js file in root of app where in we will use express module of node which will serve the public folder from its current directory.

• server.js

  var express = require('express');
  var app = express();
  app.use(express.static(__dirname + '/public')); //__dir and not _dir
  var port = 8000; // you can use any port
  app.listen(port);
  console.log('server on' + port);
  

• do node server : it should output "server on 8000"

• start http://localhost:8000/ : your index.html will be called

File Structure would be something similar

The problem is this block:

using (var sr = new StreamReader(ms))
{
    Console.WriteLine(sr.ReadToEnd());                        
}

When the StreamReader is closed (after leaving the using), it closes it's underlying stream as well, so now the MemoryStream is closed. When the StreamWriter gets closed, it tries to flush everything to the MemoryStream, but it is closed.

You should consider not putting the StreamReader in a using block.

This thread provided me some insight into how instanceof differed from isAssignableFrom, so I thought I'd share something of my own.

I have found that using isAssignableFrom to be the only (probably not the only, but possibly the easiest) way to ask one's self if a reference of one class can take instances of another, when one has instances of neither class to do the comparison.

Hence, I didn't find using the instanceof operator to compare assignability to be a good idea when all I had were classes, unless I contemplated creating an instance from one of the classes; I thought this would be sloppy.

The following function will allow differentiating between empty strings and undefined cookies. Undefined cookies will correctly return undefined and not an empty string unlike some of the other answers here.

function getCookie(name) {
    return (document.cookie.match('(^|;) *'+name+'=([^;]*)')||[])[2];
}

The above worked fine for me on all browsers I checked, but as mentioned by @vanovm in comments, as per the specification the key/value may be surrounded by whitespace. Hence the following is more standard compliant.

function getCookie(name) {
    return (document.cookie.match('(?:^|;)\\s*'+name.trim()+'\\s*=\\s*([^;]*?)\\s*(?:;|$)')||[])[1];
}

There's also SSH Key - Still asking for password and passphrase

Using ssh-add ~/.ssh/id_rsa without a local keychain.

This avoids having to mess with tokens.

It's not impossible without CSS. For example as a list item:

<li style="border-bottom: 1px dashed"><!--content --></li>

to generate your key hash on your local computer, run Java's keytool utility (which should be on your console's path) against the Android debug keystore. This is, by default, in your home .android directory). On OS X, run:

keytool -exportcert -alias androiddebugkey -keystore ~/.android/debug.keystore | openssl sha1 -binary | openssl base64

On Windows, use:-

keytool -exportcert -alias androiddebugkey -keystore %HOMEPATH%\.android\debug.keystore | openssl sha1 -binary | openssl base64

hope this will help you

Ref - developer facebook site

yes block are the most used functionality , so in order to avoid the retain cycle we should avoid using the strong variable,including self inside the block, inspite use the _weak or weakself.

Take care with some of the examples; $0 may include some leading path as well as the name of the program. Eg save this two line script as ./mytry.sh and the execute it.

#!/bin/bash

echo "parameter 0 --> $0" ; exit 0

Output:

parameter 0 --> ./mytry.sh

This is on a current (year 2016) version of Bash, via Slackware 14.2

one-way Data Flow, according to https://vuejs.org/v2/guide/components.html, the component follow one-Way Data Flow, All props form a one-way-down binding between the child property and the parent one, when the parent property updates, it will flow down to the child but not the other way around, this prevents child components from accidentally mutating the parent's, which can make your app's data flow harder to understand.

In addition, every time the parent component is updates all props in the child components will be refreshed with the latest value. This means you should not attempt to mutate a prop inside a child component. If you do .vue will warn you in the console.

There are usually two cases where it’s tempting to mutate a prop: The prop is used to pass in an initial value; the child component wants to use it as a local data property afterwards. The prop is passed in as a raw value that needs to be transformed. The proper answer to these use cases are: Define a local data property that uses the prop’s initial value as its initial value:

props: ['initialCounter'],
data: function () {
  return { counter: this.initialCounter }
}

Define a computed property that is computed from the prop’s value:

props: ['size'],
computed: {
  normalizedSize: function () {
    return this.size.trim().toLowerCase()
  }
}

It seems like react-native eject is no more available. The only way I could find for recreating the ios folder was to generate it from scratch.

Take a backup of your ios folder

mv /path_to_your_old_project/ios /path_to_your_backup_dir/ios_backup

Navigate to a temporary directory and create a new project with the same name as your current project

react-native init project_name
mv project_name/ios /path_to_your_old_project/ios

Install the pod dependencies inside the ios folder within your project

cd /path_to_your_old_project/ios
pod install

This piece of code helps.

Bitmap icon = BitmapFactory.decodeResource(context.getResources(),
                                           R.drawable.icon_resource);

Here a version where the image gets downloaded.

String name = c.getString(str_url);
URL url_value = new URL(name);
ImageView profile = (ImageView)v.findViewById(R.id.vdo_icon);
if (profile != null) {
    Bitmap mIcon1 =
        BitmapFactory.decodeStream(url_value.openConnection().getInputStream());
    profile.setImageBitmap(mIcon1);
}

ALTER TABLE (Your_Table_Name) MODIFY (Your_Column_Name) DATA_TYPE();

For you problem:

ALTER TABLE (Your_Table_Name) MODIFY (Your_Column_Name) DECIMAL(Precision, Scale); 

Yes, a UIGestureRecognizer can be added to a UIImageView. As stated in the other answer, it is very important to remember to enable user interaction on the image view by setting its userInteractionEnabled property to YES. UIImageView inherits from UIView, whose user interaction property is set to YES by default, however, UIImageView's user interaction property is set to NO by default.

From the UIImageView docs:

New image view objects are configured to disregard user events by default. If you want to handle events in a custom subclass of UIImageView, you must explicitly change the value of the userInteractionEnabled property to YES after initializing the object.

Anyway, on the the bulk of the answer. Here's an example of how to create a UIImageView with a UIPinchGestureRecognizer, a UIRotationGestureRecognizer, and a UIPanGestureRecognizer.

First, in viewDidLoad, or another method of your choice, create an image view, give it an image, a frame, and enable its user interaction. Then create the three gestures as follows. Be sure to utilize their delegate property (most likely set to self). This will be required to use multiple gestures at the same time.

- (void)viewDidLoad
{
    [super viewDidLoad];

    // set up the image view
    UIImageView *imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"someImage"]];
    [imageView setBounds:CGRectMake(0.0, 0.0, 120.0, 120.0)];
    [imageView setCenter:self.view.center];
    [imageView setUserInteractionEnabled:YES]; // <--- This is very important

    // create and configure the pinch gesture
    UIPinchGestureRecognizer *pinchGestureRecognizer = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinchGestureDetected:)];
    [pinchGestureRecognizer setDelegate:self];
    [imageView addGestureRecognizer:pinchGestureRecognizer];

    // create and configure the rotation gesture
    UIRotationGestureRecognizer *rotationGestureRecognizer = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotationGestureDetected:)];
    [rotationGestureRecognizer setDelegate:self];
    [imageView addGestureRecognizer:rotationGestureRecognizer];

    // creat and configure the pan gesture
    UIPanGestureRecognizer *panGestureRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panGestureDetected:)];
    [panGestureRecognizer setDelegate:self];
    [imageView addGestureRecognizer:panGestureRecognizer];


    [self.view addSubview:imageView]; // add the image view as a subview of the view controllers view
}

Here are the three methods that will be called when the gestures on your view are detected. Inside them, we will check the current state of the gesture, and if it is in either the began or changed UIGestureRecognizerState we will read the gesture's scale/rotation/translation property, apply that data to an affine transform, apply the affine transform to the image view, and then reset the gestures scale/rotation/translation.

- (void)pinchGestureDetected:(UIPinchGestureRecognizer *)recognizer
{
    UIGestureRecognizerState state = [recognizer state];

    if (state == UIGestureRecognizerStateBegan || state == UIGestureRecognizerStateChanged)
    {
        CGFloat scale = [recognizer scale];
        [recognizer.view setTransform:CGAffineTransformScale(recognizer.view.transform, scale, scale)];
        [recognizer setScale:1.0];
    }
}

- (void)rotationGestureDetected:(UIRotationGestureRecognizer *)recognizer
{
    UIGestureRecognizerState state = [recognizer state];

    if (state == UIGestureRecognizerStateBegan || state == UIGestureRecognizerStateChanged)
    {
        CGFloat rotation = [recognizer rotation];
        [recognizer.view setTransform:CGAffineTransformRotate(recognizer.view.transform, rotation)];
        [recognizer setRotation:0];
    }
}

- (void)panGestureDetected:(UIPanGestureRecognizer *)recognizer
{
    UIGestureRecognizerState state = [recognizer state];

    if (state == UIGestureRecognizerStateBegan || state == UIGestureRecognizerStateChanged)
    {
        CGPoint translation = [recognizer translationInView:recognizer.view];
        [recognizer.view setTransform:CGAffineTransformTranslate(recognizer.view.transform, translation.x, translation.y)];
        [recognizer setTranslation:CGPointZero inView:recognizer.view];
    }
}

Finally and very importantly, you'll need to utilize the UIGestureRecognizerDelegate method gestureRecognizer: shouldRecognizeSimultaneouslyWithGestureRecognizer to allow the gestures to work at the same time. If these three gestures are the only three gestures that have this class assigned as their delegate, then you can simply return YES as shown below. However, if you have additional gestures that have this class assigned as their delegate, you may need to add logic to this method to determine which gesture is which before allowing them to all work together.

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
    return YES;
}

Don't forget to make sure that your class conforms to the UIGestureRecognizerDelegate protocol. To do so, make sure that your interface looks something like this:

@interface MyClass : MySuperClass <UIGestureRecognizerDelegate>

If you prefer to play with the code in a working sample project yourself, the sample project I've created containing this code can be found here.

For EmEditor users

To set EmEditor as the default text editor for Git, open Git Bash, and type:

git config --global core.editor "emeditor.exe -sp"

EmEditor v19.9.2 or later required.

If you want to see landscape on the screen before you print, as well as printing, then in your css, you can set the width to 900px, and the height to 612px.

OP didn't mention A4 size. I assume it's Letter size in my numbers above.

We can use hashing to our leverage if you can abstract a single pair of socks as the key itself and its other pair as value.

1. Make two imaginary sections behind you on the floor, one for you and another for your spouse.

2. Take one from the pile of socks.

3. Now place the socks on the floor, one by one, following the below rule.

   • Identify the socks as yours or hers and look at the relevant section on the floor.

   • If you can spot the pair on the floor pick it up and knot them up or clip them up or do whatever you would do after you find a pair and place it in a basket (remove it from the floor).

   • Place it in the relevant section.

4. Repeat 3 until all socks are over from the pile.

Hashing and Abstraction

Abstraction is a very powerful concept that has been used to improve user experience (UX). Examples of abstraction in real-life interactions with computers include:

• Folder icons used for navigation in a GUI (graphical user interface) to access an address instead of typing the actual address to navigate to a location.
• GUI sliders used to control various levels of volume, document scroll position, etc..

Hashing or other not-in-place solutions are not an option because I am not able to duplicate my socks (though it could be nice if I could).

I believe the asker was thinking of applying hashing such that the slot to which either pair of sock goes should be known before placing them.

That's why I suggested abstracting a single sock that is placed on the floor as the hash key itself (hence there is no need to duplicate the socks).

How to define our hash key?

The below definition for our key would also work if there are more than one pair of similar socks. That is, let's say there are two pairs of black men socks PairA and PairB, and each sock is named PairA-L, PairA-R, PairB-L, PairB-R. So PairA-L can be paired with PairB-R, but PairA-L and PairB-L cannot be paired.

Let say any sock can be uniqly identified by,

Attribute[Gender] + Attribute[Colour] + Attribute[Material] + Attribute[Type1] + Attribute[Type2] + Attribute[Left_or_Right]

This is our first hash function. Let's use a short notation for this h1(G_C_M_T1_T2_LR). h1(x) is not our location key.

Another hash function eliminating the Left_or_Right attribute would be h2(G_C_M_T1_T2). This second function h2(x) is our location key! (for the space on the floor behind you).

• To locate the slot, use h2(G_C_M_T1_T2).
• Once the slot is located then use h1(x) to check their hashes. If they don't match, you have a pair. Else throw the sock into the same slot.

NOTE: Since we remove a pair once we find one, it's safe to assume that there would only be at a maximum one slot with a unique h2(x) or h1(x) value.

In case we have each sock with exactly one matching pair then use h2(x) for finding the location and if no pair, a check is required, since it's safe to assume they are a pair.

Why is it important to lay the socks on the floor

Let's consider a scenario where the socks are stacked over one another in a pile (worst case). This means we would have no other choice but to do a linear search to find a pair.

Spreading them on the floor gives more visibility which improves the chance of spotting the matching sock (matching a hash key). When a sock was placed on the floor in step 3, our mind had subconsciously registered the location. - So in case, this location is available in our memory we can directly find the matching pair. - In case the location is not remembered, don't worry, then we can always revert back to linear search.

Why is it important to remove the pair from the floor?

• Short-term human memory works best when it has fewer items to remember. Thus increasing the probability of us resorting to hashing to spot the pair.
• It will also reduce the number of items to be searched through when linear searching for the pair is being used.

Analysis

1. Case 1: Worst case when Derpina cannot remember or spot the socks on the floor directly using the hashing technique. Derp does a linear search through the items on the floor. This is not worse than the iterating through the pile to find the pair.
   • Upper bound for comparison: O(n^2).
   • Lower bound for comparison: (n/2). (when every other sock Derpina picks up is the pair of previous one).
2. Case 2: Derp remembers each the location of every sock that he placed on the floor and each sock has exactly one pair.
   • Upper bound for comparison: O(n/2).
   • Lower bound for comparison: O(n/2).

I am talking about comparison operations, picking the socks from the pile would necessarily be n number of operations. So a practical lower bound would be n iterations with n/2 comparisons.

Speeding up things

To achieve a perfect score so Derp gets O(n/2) comparisons, I would recommend Derpina to,

• spend more time with the socks to get familiarize with it. Yes, that means spending more time with Derp's socks too.
• Playing memory games like spot the pairs in a grid can improve short-term memory performance, which can be highly beneficial.

Is this equivalent to the element distinctness problem?

The method I suggested is one of the methods used to solve element distinctness problem where you place them in the hash table and do the comparison.

Given your special case where there exists only one exact pair, it has become very much equivalent to the element distinct problem. Since we can even sort the socks and check adjacent socks for pairs (another solution for EDP).

However, if there is a possibility of more than one pair that can exist for given sock then it deviates from EDP.

You need to install Express locally into the context of your application (node_modules folder):

$ npm install express

The reason for this is that applications always look in their local context for any dependencies. The global installation is only for setting up system-wide available binaries, such as unit test runners or bootstrappers or things like that.

With Express, when you install it globally, you get an express binary that can bootstrap an application for you. For more information, type

$ express --help

So, to answer your final question: YES, you need to install it without -g.

Another solution could be:

$("#comedyclubs").next()

I'm with a similar problem, but, in filenames of a file I'm compressing with apache commons. So, i resolved it with this command:

convmv --notest -f cp1252 -t utf8 * -r

it works very well for me. Hope it help anyone ;)

Why you didn`t use

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation

?

Or you can use this

-(void) willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration

Or this

-(void) didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation

Hope it owl be useful )

By using below method you can convert java.math.BigDecimal to String.

   BigDecimal bigDecimal = new BigDecimal("10.0001");
   String bigDecimalString = String.valueOf(bigDecimal.doubleValue());
   System.out.println("bigDecimal value in String: "+bigDecimalString);

Output:
bigDecimal value in String: 10.0001

Additionally if someone have a use case where he needs group names before executing search on Regex object he can use:

var regex = new Regex(pattern); // initialized somewhere
// ...
var groupNames = regex.GetGroupNames();

public class OddEvenPrinetr {
    private static Object printOdd = new Object();

    public static void main(String[] args) {

        Runnable oddPrinter =  new Runnable() {
            int count = 1;
            @Override
            public void run() {
                while(true){
                    synchronized (printOdd) {
                        if(count >= 101){
                            printOdd.notify();
                            return;
                        }
                        System.out.println(count);
                        count = count + 2;                                              
                        try {
                            printOdd.notify();
                            printOdd.wait();
                        } catch (InterruptedException e) {
                            e.printStackTrace();
                        }
                    }
                }
            }
        };


        Runnable evenPrinter =  new Runnable() {
            int count = 0;
            @Override
            public void run() {
                while(true){
                    synchronized (printOdd) {
                        printOdd.notify();
                        if(count >= 100){                       
                            return;
                        }                                       
                        count = count + 2;
                        System.out.println(count);
                        printOdd.notify();
                        try {
                            printOdd.wait();
                        } catch (InterruptedException e) {
                            e.printStackTrace();
                        }
                    }
                }
            }
        };

        new Thread(oddPrinter).start();
        new Thread(evenPrinter).start();
    }
}

If you are using Babel then Unicode support is already available.

I also released a plugin which transforms your source code such that you can write regular expressions like /^\p{L}+$/. These will then be transformed into something that browsers understand.

Here is the project page of the plugin:

babel-plugin-utf-8-regex

If I understand correctly, a Java program starts with a copy of the current environment variables. Any changes via System.setProperty(String, String) are modifying the copy, not the original environment variables. Not that this provides a thorough reason as to why Sun chose this behavior, but perhaps it sheds a little light...

Click "view details" to find the inner exception.

replace "150x150" with 720x720 and remove /vp/ from the link.it should work.

Use reqclient: not designed for scripting purpose like request or many other libraries. Reqclient allows in the constructor specify many configurations useful when you need to reuse the same configuration again and again: base URL, headers, auth options, logging options, caching, etc. Also has useful features like query and URL parsing, automatic query encoding and JSON parsing, etc.

The best way to use the library is create a module to export the object pointing to the API and the necessary configurations to connect with:

Module client.js:

let RequestClient = require("reqclient").RequestClient

let client = new RequestClient({
  baseUrl: "https://myapp.com/api/v1",
  cache: true,
  auth: {user: "admin", pass: "secret"}
})

module.exports = client

And in the controllers where you need to consume the API use like this:

let client = require('client')
//let router = ...

router.get('/dashboard', (req, res) => {
  // Simple GET with Promise handling to https://myapp.com/api/v1/reports/clients
  client.get("reports/clients")
    .then(response => {
       console.log("Report for client", response.userId)  // REST responses are parsed as JSON objects
       res.render('clients/dashboard', {title: 'Customer Report', report: response})
    })
    .catch(err => {
      console.error("Ups!", err)
      res.status(400).render('error', {error: err})
    })
})

router.get('/orders', (req, res, next) => {
  // GET with query (https://myapp.com/api/v1/orders?state=open&limit=10)
  client.get({"uri": "orders", "query": {"state": "open", "limit": 10}})
    .then(orders => {
      res.render('clients/orders', {title: 'Customer Orders', orders: orders})
    })
    .catch(err => someErrorHandler(req, res, next))
})

router.delete('/orders', (req, res, next) => {
  // DELETE with params (https://myapp.com/api/v1/orders/1234/A987)
  client.delete({
    "uri": "orders/{client}/{id}",
    "params": {"client": "A987", "id": 1234}
  })
  .then(resp => res.status(204))
  .catch(err => someErrorHandler(req, res, next))
})

reqclient supports many features, but it has some that are not supported by other libraries: OAuth2 integration and logger integration with cURL syntax, and always returns native Promise objects.

Paint.net is a free photo-editing tool that allows for transparent backgrounds. There is a simple example on YouTube http://www.youtube.com/watch?v=cdFpS-AvNCE. If you are still on Windows XP SP2 and that's an issue, I would first recommend doing the free service pack upgrade. But if that is not an option there are older versions of Paint.net that you could download and try.

My frustration in being unable to get a plugin for Notepad++ to work came from not realizing that the DLL for the plugin had to be installed directly in the C:\Program Files (x86)\Notepad++\plugins directory, and NOT into a subfolder below that, named for the plugin.

I was misled because every OTHER plugin that comes with the clean installation of Notepad++ IS installed in its own subfolder under \plugins.

\plugins
   + DSpellCheck
   + MIME Tools
   + Converter (etc.)

I tried that with the plugin I was attempting to install (autosave), and just couldn't get it to work. But then thanks to an answer from Steve Chambers above, I tried putting the DLL directly into the \plugins folder and PRESTO! It Works.

Hope this helps save someone else similar frustrations!

Creator of the change-case extension here. I've updated the extension to support spanning lines.

To map the upper case command to a keybinding (e.g. CTRL+T+U), click File -> Preferences -> Keyboard shortcuts, and insert the following into the json config:

{
  "key": "ctrl+t ctrl+u",
  "command": "extension.changeCase.upper",
  "when": "editorTextFocus"
}

EDIT:

With the November 2016 (release notes) update of VSCode, there is built-in support for converting to upper case and lower case via the commands editor.action.transformToUppercase and editor.action.transformToLowercase. These don't have default keybindings. They also work with multi-line blocks.

The change-case extension is still useful for other text transformations, e.g. camelCase, PascalCase, snake_case, kebab-case, etc.

Try using String.replace() or String.replaceAll() instead.

String my_new_str = my_str.replace("&", "&");

(Both replace all occurrences; replaceAll allows use of regex.)

You can't do this with jQuery, visible="false" in asp.net means the control isn't rendered into the page. If you want the control to go to the client, you need to do style="display: none;" so it's actually in the HTML, otherwise there's literally nothing for the client to show, since the element wasn't in the HTML your server sent.

If you remove the visible attribute and add the style attribute you can then use jQuery to show it, like this:

$("#elementID").show();

Old Answer (before patrick's catch)

To change visibility, you need to use .css(), like this:

$("#elem").css('visibility', 'visible');

Unless you need to have the element occupy page space though, use display: none; instead of visibility: hidden; in your CSS, then just do:

$("#elem").show();

The .show() and .hide() functions deal with display instead of visibility, like most of the jQuery functions :)

Sure, for windows you can use:

$WshShell = new COM("WScript.Shell");
$oExec = $WshShell->Run("C:/path/to/php-win.exe -f C:/path/to/script.php", 0, false);

Note:

If you get a COM error, add the extension to your php.ini and restart apache:

[COM_DOT_NET]
extension=php_com_dotnet.dll

Number of a columns in the result set you can get with code (as DB is used PostgreSQL):

//load the driver for PostgreSQL
Class.forName("org.postgresql.Driver");

String url = "jdbc:postgresql://localhost/test";
Properties props = new Properties();
props.setProperty("user","mydbuser");
props.setProperty("password","mydbpass");
Connection conn = DriverManager.getConnection(url, props);

//create statement
Statement stat = conn.createStatement();

//obtain a result set
ResultSet rs = stat.executeQuery("SELECT c1, c2, c3, c4, c5 FROM MY_TABLE");

//from result set give metadata
ResultSetMetaData rsmd = rs.getMetaData();

//columns count from metadata object
int numOfCols = rsmd.getColumnCount();

But you can get more meta-informations about columns:

for(int i = 1; i <= numOfCols; i++)
{
    System.out.println(rsmd.getColumnName(i));
}

And at least but not least, you can get some info not just about table but about DB too, how to do it you can find here and here.

This will search and replace all non ASCII letters:

String resultString = subjectString.replaceAll("[^\\x00-\\x7F]", "");

in our use we have to capture with host x.x.x.x. or (vlan and host x.x.x.x)

anything less will not capture? I am not sure why but that is the way it works!

For excellent code-readability, Fest Assertions has nice support for asserting lists

So in this case, something like:

Assertions.assertThat(returnedComponents).containsExactly("One", "Two", "Three");

Or make the expected list to an array, but I prefer the above approach because it's more clear.

Assertions.assertThat(returnedComponents).containsExactly(argumentComponents.toArray());

!important, after your CSS declaration.

div {
   color: blue !important; 

   /* This Is Now Working */
}

Here is a table of the different events and the levels of browser support. You need to pick an event which is supported across at least all modern browsers.

As you will see from the table, the keypress and change event do not have uniform support whereas the keyup event does.

Also make sure you attach the event handler using a cross-browser-compatible method...

Contacts.add(objt.Data(name, address, contact));

This is not a perfect way to call a constructor. The constructor is called at the time of object creation automatically. If there is no constructor java class creates its own constructor.

The correct way is:

// object creation. 
Data object1 = new Data(name, address, contact);      

// adding Data object to ArrayList object Contacts.
Contacts.add(object1);                              

You need to declare the prototype of your writeFile function, before actually using it:

int writeFile( void );

int main( void )
{
   ...

I got this same error working in Eclipse with Maven with the additional information

schema_reference.4: Failed to read schema document 'https://maven.apache.org/xsd/maven-4.0.0.xsd', because 1) could not find the document; 2) the document could not be read; 3) the root element of the document is not <xsd:schema>.

This was after copying in a new controller and it's interface from a Thymeleaf example. Honestly, no matter how careful I am I still am at a loss to understand how one is expected to figure this out. On a (lucky) guess I right clicked the project, clicked Maven and Update Project which cleared up the issue.

Here is the simplest example that has the key lines of code:

import numpy as np 
import matplotlib.pyplot as plt

H = np.array([[1, 2, 3, 4],
          [5, 6, 7, 8],
          [9, 10, 11, 12],
          [13, 14, 15, 16]])

plt.imshow(H, interpolation='none')
plt.show()

Sub HighlightSpecificValue()

'PURPOSE: Highlight all cells containing a specified values


Dim fnd As String, FirstFound As String
Dim FoundCell As Range, rng As Range
Dim myRange As Range, LastCell As Range

'What value do you want to find?
  fnd = InputBox("I want to hightlight cells containing...", "Highlight")

    'End Macro if Cancel Button is Clicked or no Text is Entered
      If fnd = vbNullString Then Exit Sub

Set myRange = ActiveSheet.UsedRange
Set LastCell = myRange.Cells(myRange.Cells.Count)

enter code here
Set FoundCell = myRange.Find(what:=fnd, after:=LastCell)

'Test to see if anything was found
  If Not FoundCell Is Nothing Then
    FirstFound = FoundCell.Address

  Else
    GoTo NothingFound
  End If

Set rng = FoundCell

'Loop until cycled through all unique finds
  Do Until FoundCell Is Nothing
    'Find next cell with fnd value
      Set FoundCell = myRange.FindNext(after:=FoundCell)







    'Add found cell to rng range variable
      Set rng = Union(rng, FoundCell)

    'Test to see if cycled through to first found cell
      If FoundCell.Address = FirstFound Then Exit Do


  Loop

'Highlight Found cells yellow

  rng.Interior.Color = RGB(255, 255, 0)

  Dim fnd1 As String
  fnd1 = "Rah"
  'Condition highlighting

  Set FoundCell = myRange.FindNext(after:=FoundCell)



  If FoundCell.Value("rah") Then
      rng.Interior.Color = RGB(255, 0, 0)

  ElseIf FoundCell.Value("Nav") Then

    rng.Interior.Color = RGB(0, 0, 255)



    End If





'Report Out Message
  MsgBox rng.Cells.Count & " cell(s) were found containing: " & fnd

Exit Sub

'Error Handler
NothingFound:
  MsgBox "No cells containing: " & fnd & " were found in this worksheet"

End Sub

This is what I'm currently using, it will list a table and it's fkey constraints [remove table clause and it will list all tables in current catalog]:

SELECT

    current_schema() AS "schema",
    current_catalog AS "database",
    "pg_constraint".conrelid::regclass::text AS "primary_table_name",
    "pg_constraint".confrelid::regclass::text AS "foreign_table_name",

    (
        string_to_array(
            (
                string_to_array(
                    pg_get_constraintdef("pg_constraint".oid),
                    '('
                )
            )[2],
            ')'
        )
    )[1] AS "foreign_column_name",

    "pg_constraint".conindid::regclass::text AS "constraint_name",

    TRIM((
        string_to_array(
            pg_get_constraintdef("pg_constraint".oid),
            '('
        )
    )[1]) AS "constraint_type",

    pg_get_constraintdef("pg_constraint".oid) AS "constraint_definition"

FROM pg_constraint AS "pg_constraint"

JOIN pg_namespace AS "pg_namespace" ON "pg_namespace".oid = "pg_constraint".connamespace

WHERE
    --fkey and pkey constraints
    "pg_constraint".contype IN ( 'f', 'p' )
    AND
    "pg_namespace".nspname = current_schema()
    AND
    "pg_constraint".conrelid::regclass::text IN ('whatever_table_name')

You can not "attach" a SASS/SCSS file to an HTML document.

SASS/SCSS is a CSS preprocessor that runs on the server and compiles to CSS code that your browser understands.

There are client-side alternatives to SASS that can be compiled in the browser using javascript such as LESS CSS, though I advise you compile to CSS for production use.

It's as simple as adding 2 lines of code to your HTML file.

<link rel="stylesheet/less" type="text/css" href="styles.less" />
<script src="less.js" type="text/javascript"></script>

If you we are doing all above steps that may be confused and our problem is just missing tools.jre so just add tools.jre by the following steps and problem is solved.

Step 1 : In eclipse go to Windows -> preferences

Step 2 : Java -> Installed JREs (Double click on it)

Step 3 : Click Edit button -> Click Add External JARs

Step 4 : Now select tools.jar path

now apply changes and it works fine.

Here is screenshoot

To verify and list the fingerprint of the key (without importing it into the keyring first), type

gpg --with-fingerprint <filename>

Edit: on Ubuntu 18.04 (gpg 2.2.4) the fingerprint isn't show with the above command. Use the --with-subkey-fingerprint option instead

gpg --with-subkey-fingerprint <filename>

I was getting an "authenticationrequired" (407) error when clicking the [Sync] button (using the MS Git Provider), and this worked for me (VS 2013):

..\Program Files\Microsoft Visual Studio 12.0\Common7\IDE\devenv.exe.config

  <system.net>
    <defaultProxy useDefaultCredentials="true" enabled="true">
      <proxy proxyaddress="http://username:password@proxyip:port" />
    </defaultProxy>
    <settings>
      <ipv6 enabled="false"/>
      <servicePointManager expect100Continue="false"/>
    </settings>
  </system.net>

I think the magic for me was setting 'ipv6' to 'false' - not sure why (perhaps only IPv4 is supported in my case). I tried other ways as shown above, but I move the "settings" section AFTER "defaultProxy", and changed "ipv6", and it worked perfectly with my login added (every other way I tried in all other answers posted just failed for me).

Edit: Just found another work around (without changing the config file). For some reason, if I disable the windows proxy (it's a URL to a PAC file in my case), try again (it will fail), and re-enable the proxy, it works. Seems to cache something internally that gets reset when I do this (at least in my case).

Here is a code-example of how you can do it:

Intent intent = getIntent(getApplicationContext(), A.class)

This will make sure that you only have one instance of an activity on the stack.

private static Intent getIntent(Context context, Class<?> cls) {
    Intent intent = new Intent(context, cls);
    intent.addFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
    return intent;
}

It might be that the code in your service somehow breaks out of Angular's zone. This breaks change detection. This should work:

import {Component, OnInit, NgZone} from 'angular2/core';

export class RecentDetectionComponent implements OnInit {

    recentDetections: Array<RecentDetection>;

    constructor(private zone:NgZone, // <== added
        private recentDetectionService: RecentDetectionService) {
        this.recentDetections = new Array<RecentDetection>();
    }

    getRecentDetections(): void {
        this.recentDetectionService.getJsonFromApi()
            .subscribe(recent => { 
                 this.zone.run(() => { // <== added
                     this.recentDetections = recent;
                     console.log(this.recentDetections[0].macAddress) 
                 });
        });
    }

    ngOnInit() {
        this.getRecentDetections();
        let timer = Observable.timer(2000, 5000);
        timer.subscribe(() => this.getRecentDetections());
    }
}

For other ways to invoke change detection see Triggering change detection manually in Angular

Alternative ways to invoke change detection are

ChangeDetectorRef.detectChanges()

to immediately run change detection for the current component and its children

ChangeDetectorRef.markForCheck()

to include the current component the next time Angular runs change detection

ApplicationRef.tick()

to run change detection for the whole application

assign is good, but I have not found a function for referring back to the variable you've created in an automated script. (as.name seems to work the opposite way). More experienced coders will doubtless have a better solution, but this solution works and is slightly humorous perhaps, in that it gets R to write code for itself to execute.

Say I have just assigned value 5 to x (var.name <- "x"; assign(var.name, 5)) and I want to change the value to 6. If I am writing a script and don't know in advance what the variable name (var.name) will be (which seems to be the point of the assign function), I can't simply put x <- 6 because var.name might have been "y". So I do:

var.name <- "x"
#some other code...
assign(var.name, 5)
#some more code...

#write a script file (1 line in this case) that works with whatever variable name
write(paste0(var.name, " <- 6"), "tmp.R")
#source that script file
source("tmp.R")
#remove the script file for tidiness
file.remove("tmp.R")

x will be changed to 6, and if the variable name was anything other than "x", that variable will similarly have been changed to 6.

As per my usage above v.4 this gonna work

$('#selectID').on("select2:select", function(e) { 
    //var value = e.params.data;  Using {id,text format}
});

And for less then v.4 this gonna work:

$('#selectID').on("change", function(e) { 
   //var value = e.params.data; Using {id,text} format
});

When you use JSON stringify then use html_entity_decode first before json_decode.

$tempData = html_entity_decode($tempData);
$cleanData = json_decode($tempData);

I tried to combine efficiency and simplicity and end up with this :

public static IEnumerable<T> TakeLast<T>(this IEnumerable<T> source, int count)
{
    if (source == null) { throw new ArgumentNullException("source"); }

    Queue<T> lastElements = new Queue<T>();
    foreach (T element in source)
    {
        lastElements.Enqueue(element);
        if (lastElements.Count > count)
        {
            lastElements.Dequeue();
        }
    }

    return lastElements;
}

About performance : In C#, Queue<T> is implemented using a circular buffer so there is no object instantiation done each loop (only when the queue is growing up). I did not set queue capacity (using dedicated constructor) because someone might call this extension with count = int.MaxValue . For extra performance you might check if source implement IList<T> and if yes, directly extract the last values using array indexes.

    public static string Serialize(object dataToSerialize)
    {
        if(dataToSerialize==null) return null;

        using (StringWriter stringwriter = new System.IO.StringWriter())
        {
            var serializer = new XmlSerializer(dataToSerialize.GetType());
            serializer.Serialize(stringwriter, dataToSerialize);
            return stringwriter.ToString();
        }
    }

    public static T Deserialize<T>(string xmlText)
    {
        if(String.IsNullOrWhiteSpace(xmlText)) return default(T);

        using (StringReader stringReader = new System.IO.StringReader(xmlText))
        {
            var serializer = new XmlSerializer(typeof(T));
            return (T)serializer.Deserialize(stringReader);
        }
    }

To add another GUI option, we use WinSCP's S3 functionality. It's very easy to connect, only requiring your access key and secret key in the UI. You can then browse and download whatever files you require from any accessible buckets, including recursive downloads of nested folders.

Since it can be a challenge to clear new software through security and WinSCP is fairly prevalent, it can be really beneficial to just use it rather than try to install a more specialized utility.

If you are not bothered about the location of the text present, then you could use Driver.PageSource property as below:

Driver.PageSource.Contains("expected message");

In Rider, this would be Ctrl +Shift+Keypad *, 2

But!, you cannot use the number 2 on keypad, only number 2 on the top row of the keyboard would work.

You should try this

 SELECT t1.*,t2.* FROM t1,t2

A canvas has 2 sizes, the dimension of the pixels in the canvas (it's backingstore or drawingBuffer) and the display size. The number of pixels is set using the the canvas attributes. In HTML

<canvas width="400" height="300"></canvas>

Or in JavaScript

someCanvasElement.width = 400;
someCanvasElement.height = 300;

Separate from that are the canvas's CSS style width and height

In CSS

canvas {  /* or some other selector */
   width: 500px;
   height: 400px;
}

Or in JavaScript

canvas.style.width = "500px";
canvas.style.height = "400px";

The arguably best way to make a canvas 1x1 pixels is to ALWAYS USE CSS to choose the size then write a tiny bit of JavaScript to make the number of pixels match that size.

function resizeCanvasToDisplaySize(canvas) {
   // look up the size the canvas is being displayed
   const width = canvas.clientWidth;
   const height = canvas.clientHeight;

   // If it's resolution does not match change it
   if (canvas.width !== width || canvas.height !== height) {
     canvas.width = width;
     canvas.height = height;
     return true;
   }

   return false;
}

Why is this the best way? Because it works in most cases without having to change any code.

Here's a full window canvas:

const ctx = document.querySelector("#c").getContext("2d");_x000D_
_x000D_
function render(time) {_x000D_
  time *= 0.001;_x000D_
  resizeCanvasToDisplaySize(ctx.canvas);_x000D_
 _x000D_
  ctx.fillStyle = "#DDE";_x000D_
  ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height);_x000D_
  ctx.save();_x000D_
 _x000D_
  const spacing = 64;_x000D_
  const size = 48;_x000D_
  const across = ctx.canvas.width / spacing + 1;_x000D_
  const down = ctx.canvas.height / spacing + 1;_x000D_
  const s = Math.sin(time);_x000D_
  const c = Math.cos(time);_x000D_
  for (let y = 0; y < down; ++y) {_x000D_
    for (let x = 0; x < across; ++x) {_x000D_
      ctx.setTransform(c, -s, s, c, x * spacing, y * spacing);_x000D_
      ctx.strokeRect(-size / 2, -size / 2, size, size);_x000D_
    }_x000D_
  }_x000D_
  _x000D_
  ctx.restore();_x000D_
  _x000D_
  requestAnimationFrame(render);_x000D_
}_x000D_
requestAnimationFrame(render);_x000D_
_x000D_
function resizeCanvasToDisplaySize(canvas) {_x000D_
   // look up the size the canvas is being displayed_x000D_
   const width = canvas.clientWidth;_x000D_
   const height = canvas.clientHeight;_x000D_
_x000D_
   // If it's resolution does not match change it_x000D_
   if (canvas.width !== width || canvas.height !== height) {_x000D_
     canvas.width = width;_x000D_
     canvas.height = height;_x000D_
     return true;_x000D_
   }_x000D_
_x000D_
   return false;_x000D_
}

body { margin: 0; }_x000D_
canvas { display: block; width: 100vw; height: 100vh; }

<canvas id="c"></canvas>

And Here's a canvas as a float in a paragraph

const ctx = document.querySelector("#c").getContext("2d");_x000D_
_x000D_
function render(time) {_x000D_
  time *= 0.001;_x000D_
  resizeCanvasToDisplaySize(ctx.canvas);_x000D_
 _x000D_
  ctx.fillStyle = "#DDE";_x000D_
  ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height);_x000D_
  ctx.save();_x000D_
 _x000D_
  const spacing = 64;_x000D_
  const size = 48;_x000D_
  const across = ctx.canvas.width  / spacing + 1;_x000D_
  const down   = ctx.canvas.height / spacing + 1;_x000D_
  const s = Math.sin(time);_x000D_
  const c = Math.cos(time);_x000D_
  for (let y = 0; y <= down; ++y) {_x000D_
    for (let x = 0; x <= across; ++x) {_x000D_
      ctx.setTransform(c, -s, s, c, x * spacing, y * spacing);_x000D_
      ctx.strokeRect(-size / 2, -size / 2, size, size);_x000D_
    }_x000D_
  }_x000D_
  _x000D_
  ctx.restore();_x000D_
  _x000D_
  requestAnimationFrame(render);_x000D_
}_x000D_
requestAnimationFrame(render);_x000D_
_x000D_
function resizeCanvasToDisplaySize(canvas) {_x000D_
   // look up the size the canvas is being displayed_x000D_
   const width = canvas.clientWidth;_x000D_
   const height = canvas.clientHeight;_x000D_
_x000D_
   // If it's resolution does not match change it_x000D_
   if (canvas.width !== width || canvas.height !== height) {_x000D_
     canvas.width = width;_x000D_
     canvas.height = height;_x000D_
     return true;_x000D_
   }_x000D_
_x000D_
   return false;_x000D_
}

span { _x000D_
   width: 250px; _x000D_
   height: 100px; _x000D_
   float: left; _x000D_
   padding: 1em 1em 1em 0;_x000D_
   display: inline-block;_x000D_
}_x000D_
canvas {_x000D_
   width: 100%;_x000D_
   height: 100%;_x000D_
}

<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Praesent cursus venenatis metus. Mauris ac nibh at odio scelerisque scelerisque. Donec ut enim <span class="diagram"><canvas id="c"></canvas></span>_x000D_
vel urna gravida imperdiet id ac odio. Aenean congue hendrerit eros id facilisis. In vitae leo ullamcorper, aliquet leo a, vehicula magna. Proin sollicitudin vestibulum aliquet. Sed et varius justo._x000D_
<br/><br/>_x000D_
Quisque tempor metus in porttitor placerat. Nulla vehicula sem nec ipsum commodo, at tincidunt orci porttitor. Duis porttitor egestas dui eu viverra. Sed et ipsum eget odio pharetra semper. Integer tempor orci quam, eget aliquet velit consectetur sit amet. Maecenas maximus placerat arcu in varius. Morbi semper, quam a ullamcorper interdum, augue nisl sagittis urna, sed pharetra lectus ex nec elit. Nullam viverra lacinia tellus, bibendum maximus nisl dictum id. Phasellus mauris quam, rutrum ut congue non, hendrerit sollicitudin urna._x000D_
</p>

Here's a canvas in a sizable control panel

const ctx = document.querySelector("#c").getContext("2d");_x000D_
_x000D_
function render(time) {_x000D_
  time *= 0.001;_x000D_
  resizeCanvasToDisplaySize(ctx.canvas);_x000D_
_x000D_
  ctx.fillStyle = "#DDE";_x000D_
  ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height);_x000D_
  ctx.save();_x000D_
 _x000D_
  const spacing = 64;_x000D_
  const size = 48;_x000D_
  const across = ctx.canvas.width / spacing + 1;_x000D_
  const down = ctx.canvas.height / spacing + 1;_x000D_
  const s = Math.sin(time);_x000D_
  const c = Math.cos(time);_x000D_
  for (let y = 0; y < down; ++y) {_x000D_
    for (let x = 0; x < across; ++x) {_x000D_
      ctx.setTransform(c, -s, s, c, x * spacing, y * spacing);_x000D_
      ctx.strokeRect(-size / 2, -size / 2, size, size);_x000D_
    }_x000D_
  }_x000D_
  _x000D_
  ctx.restore();_x000D_
  _x000D_
  requestAnimationFrame(render);_x000D_
}_x000D_
requestAnimationFrame(render);_x000D_
_x000D_
function resizeCanvasToDisplaySize(canvas) {_x000D_
   // look up the size the canvas is being displayed_x000D_
   const width = canvas.clientWidth;_x000D_
   const height = canvas.clientHeight;_x000D_
_x000D_
   // If it's resolution does not match change it_x000D_
   if (canvas.width !== width || canvas.height !== height) {_x000D_
     canvas.width = width;_x000D_
     canvas.height = height;_x000D_
     return true;_x000D_
   }_x000D_
_x000D_
   return false;_x000D_
}_x000D_
_x000D_
// ----- the code above related to the canvas does not change ----_x000D_
// ---- the code below is related to the slider ----_x000D_
const $ = document.querySelector.bind(document);_x000D_
const left = $(".left");_x000D_
const slider = $(".slider");_x000D_
let dragging;_x000D_
let lastX;_x000D_
let startWidth;_x000D_
_x000D_
slider.addEventListener('mousedown', e => {_x000D_
 lastX = e.pageX;_x000D_
 dragging = true;_x000D_
});_x000D_
_x000D_
window.addEventListener('mouseup', e => {_x000D_
 dragging = false;_x000D_
});_x000D_
_x000D_
window.addEventListener('mousemove', e => {_x000D_
  if (dragging) {_x000D_
    const deltaX = e.pageX - lastX;_x000D_
    left.style.width = left.clientWidth + deltaX + "px";_x000D_
    lastX = e.pageX;_x000D_
  }_x000D_
});

body { _x000D_
  margin: 0;_x000D_
}_x000D_
.frame {_x000D_
  display: flex;_x000D_
  align-items: space-between;_x000D_
  height: 100vh;_x000D_
}_x000D_
.left {_x000D_
  width: 70%;_x000D_
  left: 0;_x000D_
  top: 0;_x000D_
  right: 0;_x000D_
  bottom: 0;_x000D_
}  _x000D_
canvas {_x000D_
  width: 100%;_x000D_
  height: 100%;_x000D_
}_x000D_
pre {_x000D_
  padding: 1em;_x000D_
}_x000D_
.slider {_x000D_
  width: 10px;_x000D_
  background: #000;_x000D_
}_x000D_
.right {_x000D_
  flex 1 1 auto;_x000D_
}

<div class="frame">_x000D_
  <div class="left">_x000D_
     <canvas id="c"></canvas>_x000D_
  </div>_x000D_
  <div class="slider">_x000D_
  _x000D_
  </div>_x000D_
  <div class="right">_x000D_
     <pre>_x000D_
* controls_x000D_
* go _x000D_
* here_x000D_
_x000D_
&lt;- drag this_x000D_
     </pre>_x000D_
  </div>_x000D_
</div>

here's a canvas as a background

const ctx = document.querySelector("#c").getContext("2d");_x000D_
_x000D_
function render(time) {_x000D_
  time *= 0.001;_x000D_
  resizeCanvasToDisplaySize(ctx.canvas);_x000D_
 _x000D_
  ctx.fillStyle = "#DDE";_x000D_
  ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height);_x000D_
  ctx.save();_x000D_
 _x000D_
  const spacing = 64;_x000D_
  const size = 48;_x000D_
  const across = ctx.canvas.width / spacing + 1;_x000D_
  const down = ctx.canvas.height / spacing + 1;_x000D_
  const s = Math.sin(time);_x000D_
  const c = Math.cos(time);_x000D_
  for (let y = 0; y < down; ++y) {_x000D_
    for (let x = 0; x < across; ++x) {_x000D_
      ctx.setTransform(c, -s, s, c, x * spacing, y * spacing);_x000D_
      ctx.strokeRect(-size / 2, -size / 2, size, size);_x000D_
    }_x000D_
  }_x000D_
  _x000D_
  ctx.restore();_x000D_
  _x000D_
  requestAnimationFrame(render);_x000D_
}_x000D_
requestAnimationFrame(render);_x000D_
_x000D_
function resizeCanvasToDisplaySize(canvas) {_x000D_
   // look up the size the canvas is being displayed_x000D_
   const width = canvas.clientWidth;_x000D_
   const height = canvas.clientHeight;_x000D_
_x000D_
   // If it's resolution does not match change it_x000D_
   if (canvas.width !== width || canvas.height !== height) {_x000D_
     canvas.width = width;_x000D_
     canvas.height = height;_x000D_
     return true;_x000D_
   }_x000D_
_x000D_
   return false;_x000D_
}

body { margin: 0; }_x000D_
canvas { _x000D_
  display: block; _x000D_
  width: 100vw; _x000D_
  height: 100vh;  _x000D_
  position: fixed;_x000D_
}_x000D_
#content {_x000D_
  position: absolute;_x000D_
  margin: 0 1em;_x000D_
  font-size: xx-large;_x000D_
  font-family: sans-serif;_x000D_
  font-weight: bold;_x000D_
  text-shadow: 2px  2px 0 #FFF, _x000D_
              -2px -2px 0 #FFF,_x000D_
              -2px  2px 0 #FFF,_x000D_
               2px -2px 0 #FFF;_x000D_
}

<canvas id="c"></canvas>_x000D_
<div id="content">_x000D_
<p>_x000D_
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Praesent cursus venenatis metus. Mauris ac nibh at odio scelerisque scelerisque. Donec ut enim vel urna gravida imperdiet id ac odio. Aenean congue hendrerit eros id facilisis. In vitae leo ullamcorper, aliquet leo a, vehicula magna. Proin sollicitudin vestibulum aliquet. Sed et varius justo._x000D_
</p>_x000D_
<p>_x000D_
Quisque tempor metus in porttitor placerat. Nulla vehicula sem nec ipsum commodo, at tincidunt orci porttitor. Duis porttitor egestas dui eu viverra. Sed et ipsum eget odio pharetra semper. Integer tempor orci quam, eget aliquet velit consectetur sit amet. Maecenas maximus placerat arcu in varius. Morbi semper, quam a ullamcorper interdum, augue nisl sagittis urna, sed pharetra lectus ex nec elit. Nullam viverra lacinia tellus, bibendum maximus nisl dictum id. Phasellus mauris quam, rutrum ut congue non, hendrerit sollicitudin urna._x000D_
</p>_x000D_
</div>

Because I didn't set the attributes the only thing that changed in each sample is the CSS (as far as the canvas is concerned)

Notes:

• Don't put borders or padding on a canvas element. Computing the size to subtract from the number of dimensions of the element is troublesome

In Tomcat 8.0.44 I did this: create the JNDI on Tomcat's server.xml between the tag "GlobalNamingResources" For example:

<GlobalNamingResources>_x000D_
    <!-- Editable user database that can also be used by_x000D_
         UserDatabaseRealm to authenticate users_x000D_
    -->_x000D_
  <!-- Other previus resouces -->_x000D_
    <Resource auth="Container" driverClassName="org.postgresql.Driver" global="jdbc/your_jndi" _x000D_
    maxActive="100" maxIdle="20" maxWait="1000" minIdle="5" name="jdbc/your_jndi" password="your_password" _x000D_
    type="javax.sql.DataSource" url="jdbc:postgresql://localhost:5432/your_database?user=postgres" username="database_username"/>_x000D_
  </GlobalNamingResources>

<?xml version="1.0" encoding="UTF-8"?>_x000D_
<Context reloadable="true" >_x000D_
   <ResourceLink name="jdbc/your_jndi"_x000D_
      global="jdbc/your_jndi"_x000D_
      auth="Container"_x000D_
      type="javax.sql.DataSource" />_x000D_
</Context>

So if you're using Hiberte with spring you can tell to him to use the JNDI in your persistence.xml

<?xml version="1.0" encoding="UTF-8"?>_x000D_
<persistence xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"_x000D_
 xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"_x000D_
 version="2.0" xmlns="http://java.sun.com/xml/ns/persistence">_x000D_
 <persistence-unit name="UNIT_NAME" transaction-type="RESOURCE_LOCAL">_x000D_
  <provider>org.hibernate.ejb.HibernatePersistence</provider>_x000D_
_x000D_
  <properties>_x000D_
   <property name="javax.persistence.jdbc.driver"   value="org.postgresql.Driver" />_x000D_
   <property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQL82Dialect" />_x000D_
   _x000D_
   <!--  <property name="hibernate.jdbc.time_zone" value="UTC"/>-->_x000D_
   <property name="hibernate.hbm2ddl.auto" value="update" />_x000D_
   <property name="hibernate.show_sql" value="false" />_x000D_
   <property name="hibernate.format_sql" value="true"/>     _x000D_
  </properties>_x000D_
 </persistence-unit>_x000D_
</persistence>

So in your spring.xml you can do that:

<bean id="postGresDataSource" class="org.springframework.jndi.JndiObjectFactoryBean">_x000D_
   <property name="jndiName" value="java:comp/env/jdbc/your_jndi" />_x000D_
  </bean>_x000D_
     _x000D_
        <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">_x000D_
              <property name="persistenceUnitName" value="UNIT_NAME" />_x000D_
              <property name="dataSource" ref="postGresDataSource" />_x000D_
              <property name="jpaVendorAdapter"> _x000D_
                 <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />_x000D_
              </property>_x000D_
        </bean>

<property name="jndiName" value="java:comp/env/jdbc/your_jndi" />

In this example I used spring with xml but you can do this programmaticaly if you prefer.

That's it, I hope helped.

File.WriteAllText("path", String.Empty);

or

File.CreateText("path").Close();

I had exactly this problem with the exception that the Person class had a embedded key class. My own solution was to join them in the query AND remove

@Fetch(FetchMode.JOIN)

My embedded id class:

@Embeddable
public class MessageRecipientId implements Serializable {

    @ManyToOne(targetEntity = Message.class, fetch = FetchType.LAZY)
    @JoinColumn(name="messageId")
    private Message message;
    private String governmentId;

    public MessageRecipientId() {
    }

    public Message getMessage() {
        return message;
    }

    public void setMessage(Message message) {
        this.message = message;
    }

    public String getGovernmentId() {
        return governmentId;
    }

    public void setGovernmentId(String governmentId) {
        this.governmentId = governmentId;
    }

    public MessageRecipientId(Message message, GovernmentId governmentId) {
        this.message = message;
        this.governmentId = governmentId.getValue();
    }

}

Java doesn't support default parameters. You will need to have two constructors to do what you want.

An alternative if there are lots of possible values with defaults is to use the Builder pattern, whereby you use a helper object with setters.

e.g.

   public class Foo {
     private final String param1;
     private final String param2;

     private Foo(Builder builder) {
       this.param1 = builder.param1;
       this.param2 = builder.param2;
     }
     public static class Builder {
       private String param1 = "defaultForParam1";
       private String param2 = "defaultForParam2";

       public Builder param1(String param1) {
         this.param1 = param1;
         return this;
       }
       public Builder param2(String param1) {
         this.param2 = param2;
         return this;
       }
       public Foo build() {
         return new Foo(this);
       }
     }
   }

which allows you to say:

Foo myFoo = new Foo.Builder().param1("myvalue").build();

which will have a default value for param2.

Here's how I got it working:

In AppDelegate.swift inside the didFinishLaunchingWithOptions function I put:

NotificationCenter.default.addObserver(self, selector: #selector(AppDelegate.rotated), name: UIDevice.orientationDidChangeNotification, object: nil)

and then inside the AppDelegate class I put the following function:

func rotated() {
    if UIDeviceOrientationIsLandscape(UIDevice.current.orientation) {
        print("Landscape")
    }

    if UIDeviceOrientationIsPortrait(UIDevice.current.orientation) {
        print("Portrait")
    }
}

Hope this helps anyone else!

Thanks!

import java.io.File;

import java.nio.charset.Charset;
import java.nio.file.Files;
import java.nio.file.Path;

import java.util.List;

// ...

Path filePath = new File("fileName").toPath();
Charset charset = Charset.defaultCharset();        
List<String> stringList = Files.readAllLines(filePath, charset);
String[] stringArray = stringList.toArray(new String[]{});

I had this problem, after installing jdk7 next to Java 6. The binaries were correctly updated using update-alternatives --config java to jdk7, but the $JAVA_HOME environment variable still pointed to the old directory of Java 6.

This is what I did and it works so far in a MVC 5 application.

Controller's return type is ContentResult.

public ContentResult DoSomething()
{
    if(somethingIsTrue)
    {
        Response.StatusCode = 500 //Anything other than 2XX HTTP status codes should work
        Response.Write("My Message");
        return new ContentResult();
    }

    //Do something in here//
    string json = "whatever json goes here";

    return new ContentResult{Content = json, ContentType = "application/json"};
}

And on client side this is what ajax function looks like

$.ajax({
    type: "POST",
    url: URL,
    data: DATA,
    dataType: "json",
    success: function (json) {
        //Do something with the returned json object.
    },
    error: function (xhr, status, errorThrown) {
        //Here the status code can be retrieved like;
        xhr.status;

        //The message added to Response object in Controller can be retrieved as following.
        xhr.responseText;
    }
});

Use the following syntax:

  ALTER TABLE your_table
  MODIFY COLUMN column1 datatype,
  MODIFY COLUMN column2 datatype,
  ... ... ... ... ... 
  ... ... ... ... ...

Based on that, your ALTER command should be:

  ALTER TABLE webstore.Store
  MODIFY COLUMN ShortName VARCHAR(100),
  MODIFY COLUMN UrlShort VARCHAR(100)

Note that:

1. There are no second brackets around the MODIFY statements.
2. I used two separate MODIFY statements for two separate columns.

This is the standard format of the MODIFY statement for an ALTER command on multiple columns in a MySQL table.

Take a look at the following: http://dev.mysql.com/doc/refman/5.1/en/alter-table.html and Alter multiple columns in a single statement

The solution proposed by Jens is correct. However, it turns out that if you initialize your ModelForm with an instance (example below) django will not populate the data:

def your_view(request):   
    if request.method == 'POST':
        form = UserDetailsForm(request.POST)
        if form.is_valid():
          # some code here   
        else:
          form = UserDetailsForm(instance=request.user)

So, I made my own ModelForm base class that populates the initial data:

from django import forms 
class BaseModelForm(forms.ModelForm):
    """
    Subclass of `forms.ModelForm` that makes sure the initial values
    are present in the form data, so you don't have to send all old values
    for the form to actually validate.
    """
    def merge_from_initial(self):
        filt = lambda v: v not in self.data.keys()
        for field in filter(filt, getattr(self.Meta, 'fields', ())):
            self.data[field] = self.initial.get(field, None)

Then, the simple view example looks like this:

def your_view(request):   if request.method == 'POST':
    form = UserDetailsForm(request.POST)
    if form.is_valid():
      # some code here   
    else:
      form = UserDetailsForm(instance=request.user)
      form.merge_from_initial()

Don't delete it: for just one commit git cherry-pick is enough.

But if you had several commits on the wrong branch, that is where git rebase --onto shines:

Suppose you have this:

 x--x--x--x <-- master
           \
            -y--y--m--m <- y branch, with commits which should have been on master

, then you can mark master and move it where you would want to be:

 git checkout master
 git branch tmp
 git checkout y
 git branch -f master

 x--x--x--x <-- tmp
           \
            -y--y--m--m <- y branch, master branch

, reset y branch where it should have been:

 git checkout y
 git reset --hard HEAD~2 # ~1 in your case, 
                         # or ~n, n = number of commits to cancel

 x--x--x--x <-- tmp
           \
            -y--y--m--m <- master branch
                ^
                |
                -- y branch

, and finally move your commits (reapply them, making actually new commits)

 git rebase --onto tmp y master
 git branch -D tmp


 x--x--x--x--m'--m' <-- master
           \
            -y--y <- y branch

For anyone stumbling across this question that is not on a Mac: assuming you know that your server is running on port 3000, you can do this in one shot by executing the following:

fuser -k 3000/tcp

But as Toby has mentioned, the implementation of fuser in Mac OS is rather primitive and this command will not work on mac.

Copy the .rpm file in a separate folder then run the following command $ yourfile.rpm | cpio -idmv

In hadoop1.0:

hadoop fs -rmr /PATH/ON/HDFS

In hadoop2.0:

hdfs dfs -rm -R /PATH/ON/HDFS

Use \ to escape , in path

http://pinvoke.net/default.aspx/user32.EnumDesktopWindows

There is an example of using user.dll's EnumWindow in C# to list all open windows.

Docker images are pretty minimal, But you can install ping in your official ubuntu docker image via:

apt-get update
apt-get install iputils-ping

Chances are you dont need ping your image, and just want to use it for testing purposes. Above example will help you out.

But if you need ping to exist on your image, you can create a Dockerfile or commit the container you ran the above commands in to a new image.

Commit:

docker commit -m "Installed iputils-ping" --author "Your Name <[email protected]>" ContainerNameOrId yourrepository/imagename:tag

Dockerfile:

FROM ubuntu
RUN apt-get update && apt-get install -y iputils-ping
CMD bash

Please note there are best practices on creating docker images, Like clearing apt cache files after and etc.

I found this arrow(start, end) function on MATLAB Central which is perfect for this purpose of drawing vectors with true magnitude and direction.

To remove the first and last characters, and in each case do the removal only if the character in question is a double quote:

import re

s = re.sub(r'^"|"$', '', s)

Note that the RE pattern is different than the one you had given, and the operation is sub ("substitute") with an empty replacement string (strip is a string method but does something pretty different from your requirements, as other answers have indicated).

There is a build-in base-R solution for title case as well:

tools::toTitleCase("demonstrating the title case")
## [1] "Demonstrating the Title Case"

or

library(tools)
toTitleCase("demonstrating the title case")
## [1] "Demonstrating the Title Case"

At the VS code

press Ctrl+Shift+P

then type Format Document With...

At the end of the list click on Configure Default Formatter...

Now you can choose your favorite beautifier from the list.

Update 2021

if "Format Document With..." didn't exist any more, go to file => preferences => settings then navigate to Extensions => Vetur scroll a little bit then you will see format > defaultFormatter:css, now you can pick any document formatter that you installed bofer for different file type extensions.

you can use jquery dialog widget

http://jqueryui.com/demos/dialog/

My bible for JPA work is the Java Persistence wikibook. It has a section on unidirectional OneToMany which explains how to do this with a @JoinColumn annotation. In your case, i think you would want:

@OneToMany
@JoinColumn(name="TXTHEAD_CODE")
private Set<Text> text;

I've used a Set rather than a List, because the data itself is not ordered.

The above is using a defaulted referencedColumnName, unlike the example in the wikibook. If that doesn't work, try an explicit one:

@OneToMany
@JoinColumn(name="TXTHEAD_CODE", referencedColumnName="DATREG_META_CODE")
private Set<Text> text;

for MySQL all (and 5.7)

SELECT LOWER(TRIM(BOTH 0x22 FROM TRIM(BOTH 0x20 FROM SUBSTRING(SUBSTRING(json_filed,LOCATE('\"ArrayItem\"',json_filed)+LENGTH('\"ArrayItem\"'),LOCATE(0x2C,SUBSTRING(json_filed,LOCATE('\"ArrayItem\"',json_filed)+LENGTH('\"ArrayItem\"')+1,LENGTH(json_filed)))),LOCATE(0x22,SUBSTRING(json_filed,LOCATE('\"ArrayItem\"',json_filed)+LENGTH('\"ArrayItem\"'),LOCATE(0x2C,SUBSTRING(json_filed,LOCATE('\"ArrayItem\"',json_filed)+LENGTH('\"ArrayItem\"')+1,LENGTH(json_filed))))),LENGTH(json_filed))))) AS result FROM `table`;

window.scrollTo(0,1);

this will help you but this javascript is may not work in all browsers

In your case, breaking the hash algorithm is equivalent to finding a collision in the hash algorithm. That means you don't need to find the password itself (which would be a preimage attack), you just need to find an output of the hash function that is equal to the hash of a valid password (thus "collision"). Finding a collision using a birthday attack takes O(2^(n/2)) time, where n is the output length of the hash function in bits.

SHA-2 has an output size of 512 bits, so finding a collision would take O(2^256) time. Given there are no clever attacks on the algorithm itself (currently none are known for the SHA-2 hash family) this is what it takes to break the algorithm.

To get a feeling for what 2^256 actually means: currently it is believed that the number of atoms in the (entire!!!) universe is roughly 10^80 which is roughly 2^266. Assuming 32 byte input (which is reasonable for your case - 20 bytes salt + 12 bytes password) my machine takes ~0,22s (~2^-2s) for 65536 (=2^16) computations. So 2^256 computations would be done in 2^240 * 2^16 computations which would take

2^240 * 2^-2 = 2^238 ~ 10^72s ~ 3,17 * 10^64 years

Even calling this millions of years is ridiculous. And it doesn't get much better with the fastest hardware on the planet computing thousands of hashes in parallel. No human technology will be able to crunch this number into something acceptable.

So forget brute-forcing SHA-256 here. Your next question was about dictionary words. To retrieve such weak passwords rainbow tables were used traditionally. A rainbow table is generally just a table of precomputed hash values, the idea is if you were able to precompute and store every possible hash along with its input, then it would take you O(1) to look up a given hash and retrieve a valid preimage for it. Of course this is not possible in practice since there's no storage device that could store such enormous amounts of data. This dilemma is known as memory-time tradeoff. As you are only able to store so many values typical rainbow tables include some form of hash chaining with intermediary reduction functions (this is explained in detail in the Wikipedia article) to save on space by giving up a bit of savings in time.

Salts were a countermeasure to make such rainbow tables infeasible. To discourage attackers from precomputing a table for a specific salt it is recommended to apply per-user salt values. However, since users do not use secure, completely random passwords, it is still surprising how successful you can get if the salt is known and you just iterate over a large dictionary of common passwords in a simple trial and error scheme. The relationship between natural language and randomness is expressed as entropy. Typical password choices are generally of low entropy, whereas completely random values would contain a maximum of entropy.

The low entropy of typical passwords makes it possible that there is a relatively high chance of one of your users using a password from a relatively small database of common passwords. If you google for them, you will end up finding torrent links for such password databases, often in the gigabyte size category. Being successful with such a tool is usually in the range of minutes to days if the attacker is not restricted in any way.

That's why generally hashing and salting alone is not enough, you need to install other safety mechanisms as well. You should use an artificially slowed down entropy-enducing method such as PBKDF2 described in PKCS#5 and you should enforce a waiting period for a given user before they may retry entering their password. A good scheme is to start with 0.5s and then doubling that time for each failed attempt. In most cases users don't notice this and don't fail much more often than three times on average. But it will significantly slow down any malicious outsider trying to attack your application.

To add a vertical line you need to style an hr.

Now when you make a vertical line it will appear in the middle of the page:

<hr style="width:0.5px;height:500px;"/>

Now to put it where you want you can use this code:

<hr style="width:0.5px;height:500px;margin-left:-500px;margin-right:500px;"/>

This will position it to the left, you can inverse it to position it to the right.

Everything about scope aside, they can be used differently.

console.out(var myObj=1);
//SyntaxError: Unexpected token var
console.out(myObj=1);
//1

Something something statement vs expression

None of the answers worked with me, but after reading all of them, I figured out what was the issue in my case I have 1 Html page that I want to print but it was printing with it an extra white blank page. I am using AdminLTE a bootstrap 3 theme for the page of the report to print and in it the footer tag I wanted to place this text to the bottom right of the page:

Printed by Mr. Someone

I used jquery to put that text instead of the previous "Copy Rights" footer with

$("footer").html("Printed by Mr. Someone");

and by default in the theme the tag footer uses the class .main-footer which has the attributes

padding: 15px;
border-top: 1px solid 

that caused an extra white space, so after knowing the issue, I had different options, and the best option was to use

$( "footer" ).removeClass( "main-footer" );

Just in that specific page

Be aware to use constant HTTPS or HTTP for all requests. I had the same error msg: "No 'Access-Control-Allow-Origin' header is present on the requested resource."

In case you're using postgres, you can use something like this:

class ChessBoard(models.Model):

    board = ArrayField(
        ArrayField(
            models.CharField(max_length=10, blank=True),
            size=8,
        ),
        size=8,
    )

if you need more details you can read in the link below: https://docs.djangoproject.com/pt-br/1.9/ref/contrib/postgres/fields/

if you use the "global" command, you can repeat what you can do on one online an any number of lines.

:g/<search>/.<your ex command>

example:

:g/foo/.s/bar/baz/g

The above command finds all lines that have foo, and replace all occurrences of bar on that line with baz.

:g/.*/

will do on every line

On chrome (V.35.0.1916.153 m) Try this:

function loadPrint() {
    window.print();
    setTimeout(function () { window.close(); }, 100);
}

Works great for me. It will close window after user finished working on printing dialog.

You can substitute in HTML entitiy:

$FileName = preg_replace("/'/", "\'", $UserInput);

Most of the answers here are to do the obvious check, that the length of the column as defined in the database isn't smaller than the data you are trying to pass into it.

Several times I have been bitten by going to SQL Management Studio, doing a quick:

sp_help 'mytable'

and be confused for a few minutes until I realize the column in question is an nvarchar, which means the length reported by sp_help is really double the real length supported because it's a double byte (unicode) datatype.

i.e. if sp_help reports nvarchar Length 40, you can store 20 characters max.

Here's a possible solution:

public class NumInput {
  public static void main(String [] args) {
    int min = Integer.MAX_VALUE;
    int max = Integer.MIN_VALUE;

    Scanner s = new Scanner(System.in);
    while (true) {
      System.out.print("Enter a Value: ");
      int val = s.nextInt();

      if (val == 0) {
          break;
      }
      if (val < min) {
          min = val;
      }
      if (val > max) {
         max = val;
      }
    }

    System.out.println("min: " + min);
    System.out.println("max: " + max);
  }
}

(not sure about using int or double thought)

The first problem encountered with your code is the message

Local variable OrdersPerHour might not be initialized before accessing.

It happens because in the case where your database query would throw an exception, the value might not be set to something (you have an empty catch clause).

To fix this, set the value to what you'd want to have if the query fails, which is probably 0 :

int? OrdersPerHour = 0;

Once this is fixed, now there's the error you're posting about. This happens because your method signature declares you are returning an int, but you are in fact returning a nullable int, int?, variable.

So to get the int part of your int?, you can use the .Value property:

return OrdersPerHour.Value;

However, if you declared your OrdersPerHour to be null at start instead of 0, the value can be null so a proper validation before returning is probably needed (Throw a more specific exception, for example).

To do so, you can use the HasValue property to be sure you're having a value before returning it:

if (OrdersPerHour.HasValue){
    return OrdersPerHour.Value;
}
else{
    // Handle the case here
}

As a side note, since you're coding in C# it would be better if you followed C#'s conventions. Your parameter and variables should be in camelCase, not PascalCase. So User and OrdersPerHour would be user and ordersPerHour.

I started experiment with "display" and I found that: border-radius, border, margin, padding, in a table are displayed with:

display: inline-table;

For example

table tbody tr {
  display: inline-table;
  width: 960px; 
  -webkit-border-radius: 5px;
  -moz-border-radius: 5px;
  border-radius: 5px;
}

But we need set a width of every column

tr td.first-column {
  width: 100px;
}
tr td.second-column {
  width: 860px;
}

Query Builder:

DB::table(..)->select(..)->whereNotIn('book_price', [100,200])->get();

Eloquent:

SomeModel::select(..)->whereNotIn('book_price', [100,200])->get();

Console cons = System.console();

The above code line creates cons as a null reference. The code and output are given below:

Console cons = System.console();
if (cons != null) {
    System.out.println("Enter single character: ");
    char c = (char) cons.reader().read();
    System.out.println(c);
}else{
    System.out.println(cons);
}

Output :

null

The code was tested on macbook pro with java version "1.6.0_37"

The maven dependency plugin saved me a lot of time fondling with ant tasks:

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-dependency-plugin</artifactId>
    <executions>
        <execution>
            <id>install-jar</id>
            <phase>install</phase>
            <goals>
                <goal>copy</goal>
            </goals>
            <configuration>
                <artifactItems>
                    <artifactItem>
                        <groupId>...</groupId>
                        <artifactId>...</artifactId>
                        <version>...</version>
                    </artifactItem>
                </artifactItems>
                <outputDirectory>...</outputDirectory>
                <stripVersion>true</stripVersion>
            </configuration>
        </execution>
    </executions>
</plugin>

The dependency:copy is documentend, and has more useful goals like unpack.

add target='_blank' after check validation :

    <asp:button id="_ButPrint"  ValidationGroup="print" OnClientClick="if (Page_ClientValidate()){$('form').attr('target','_blank');}"  runat="server" onclick="ButPrint_Click" Text="print" />
                                                                 

I think you need OpenSessionInViewFilter to keep your session open during view rendering (but it is not too good practice).

height:500px;
min-width:100%;
-webkit-background-size: 100% 100%;
-moz-background-size: 100% 100%;
-o-background-size: 100% 100%;
background-size:100% 100%;
object-fit:cover;

-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size:cover;

As of Jan 2018 the latest URL is:

https://google.com/maps/search/your search string (address, landmark, city, etc. Spaces are ok)

Examples:

https://google.com/maps/search/empire state building

https://google.com/maps/search/1600 Pennsylvania Ave NW, Washington, DC 20500

If you use T instead of t there is no need to jump back because the new tab will be opened, but vim's focus will simply remain within NERDTree.

You can insert arbitrary PowerShell script code in a double-quoted string by using a subexpression, for example, $() like so:

"C:\temp\mybackup $(get-date -f yyyy-MM-dd).zip"

And if you are getting the path from somewhere else - already as a string:

$dirName  = [io.path]::GetDirectoryName($path)
$filename = [io.path]::GetFileNameWithoutExtension($path)
$ext      = [io.path]::GetExtension($path)
$newPath  = "$dirName\$filename $(get-date -f yyyy-MM-dd)$ext"

And if the path happens to be coming from the output of Get-ChildItem:

Get-ChildItem *.zip | Foreach {
  "$($_.DirectoryName)\$($_.BaseName) $(get-date -f yyyy-MM-dd)$($_.extension)"}

It depends, if your function only consists of the switch statement, then I think that its fine. However, if you want to perform any other operations within that function, its probably not a great idea. You also may have to consider your requirements right now versus in the future. If you want to change your function from option one to option two, more refactoring will be needed.

However, given that within if/else statements it is best practice to do the following:

var foo = "bar";

if(foo == "bar") {
    return 0;
}
else {
    return 100;
}

Based on this, the argument could be made that option one is better practice.

In short, there's no clear answer, so as long as your code adheres to a consistent, readable, maintainable standard - that is to say don't mix and match options one and two throughout your application, that is the best practice you should be following.

Essentially, you check the length of the given string. If it's longer than a given length n, clip it to length n (substr or slice) and add html entity … (…) to the clipped string.

Such a method looks like

function truncate(str, n){
  return (str.length > n) ? str.substr(0, n-1) + '…' : str;
};

If by 'more sophisticated' you mean truncating at the last word boundary of a string then you need an extra check. First you clip the string to the desired length, next you clip the result of that to its last word boundary

function truncate( str, n, useWordBoundary ){
  if (str.length <= n) { return str; }
  const subString = str.substr(0, n-1); // the original check
  return (useWordBoundary 
    ? subString.substr(0, subString.lastIndexOf(" ")) 
    : subString) + "&hellip;";
};

You can extend the native String prototype with your function. In that case the str parameter should be removed and str within the function should be replaced with this:

String.prototype.truncate = String.prototype.truncate || 
function ( n, useWordBoundary ){
  if (this.length <= n) { return this; }
  const subString = this.substr(0, n-1); // the original check
  return (useWordBoundary 
    ? subString.substr(0, subString.lastIndexOf(" ")) 
    : subString) + "&hellip;";
};

More dogmatic developers may chide you strongly for that ("Don't modify objects you don't own". I wouldn't mind though).

An approach without extending the String prototype is to create your own helper object, containing the (long) string you provide and the beforementioned method to truncate it. That's what the snippet below does.

const LongstringHelper = str => {
  const sliceBoundary = str => str.substr(0, str.lastIndexOf(" "));
  const truncate = (n, useWordBoundary) => 
        str.length <= n ? str : `${ useWordBoundary 
          ? sliceBoundary(str.slice(0, n - 1))
          : str.substr(0, n - 1)}&hellip;`;
  return { full: str,  truncate };
}; 
const longStr = LongstringHelper(`Lorem ipsum dolor sit amet, consectetur 
adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore 
magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation 
ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute 
irure dolor in reprehenderit in voluptate velit esse cillum dolore 
eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non 
proident, sunt in culpa qui officia deserunt mollit anim id est laborum`);

const plain = document.querySelector("#resultTruncatedPlain");
const lastWord = document.querySelector("#resultTruncatedBoundary");
plain.innerHTML = 
  longStr.truncate(+plain.dataset.truncateat, !!+plain.dataset.onword);
lastWord.innerHTML = 
  longStr.truncate(+lastWord.dataset.truncateat, !!+lastWord.dataset.onword);
document.querySelector("#resultFull").innerHTML = longStr.full;

body {
  font: normal 12px/15px verdana, arial;
}

p {
  width: 450px;
}

#resultTruncatedPlain:before {
  content: 'Truncated (plain) n='attr(data-truncateat)': ';
  color: green;
}

#resultTruncatedBoundary:before {
  content: 'Truncated (last whole word) n='attr(data-truncateat)': ';
  color: green;
}

#resultFull:before {
  content: 'Full: ';
  color: green;
}

<p id="resultTruncatedPlain" data-truncateat="120" data-onword="0"></p>
<p id="resultTruncatedBoundary" data-truncateat="120" data-onword="1"></p>
<p id="resultFull"></p>

Finally, you can use css only to truncate long strings in HTML nodes. It gives you less control, but may well be viable solution.

body {
  font: normal 12px/15px verdana, arial;
  margin: 2rem;
}

.truncate {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  width: 30vw;
}

.truncate:before{
  content: attr(data-longstring);
}

.truncate:hover::before {
  content: attr(data-longstring);
  width: auto;
  height: auto;
  overflow: initial;
  text-overflow: initial;
  white-space: initial;
  background-color: white;
  display: inline-block;
}

<div class="truncate" data-longstring="Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."></div>

Use function.call:

var f = function () { console.log(this); }
f.call(that, arg1, arg2, etc);

Where that is the object which you want this in the function to be.

In order to completely override the bootstrap button styles, you need to override a list of properties. See the below example.

    .btn-primary, .btn-primary:hover, .btn-primary:focus, .btn-primary.focus, 
    .btn-primary:active, .btn-primary.active, .btn-primary:visited,
    .btn-primary:active:hover, .btn-primary.active:hover{
        background-color: #F19425;
        color:#fff;
        border: none;
        outline: none;
    }

If you don't use all the listed styles then you will see the default styles at performing actions on button. For example once you click the button and remove mouse pointer from button, you will see the default color visible. Or keep the button pressed you will see default colors. So, I have listed all the pseudo-styles that are to be overridden.

You can negate an expression with "!":

#!/bin/bash
FILE=$1

if [ ! -f "$FILE" ]
then
    echo "File $FILE does not exist"
fi

The relevant man page is man test or, equivalently, man [ -- or help test or help [ for the built-in bash command.

See What is the maximum length of a URL in different browsers?

The length of the url can't be changed in PHP. The linked question is about the URL size limit, you will find what you want.

Please also consider "salting" your hash (not a culinary concept!). Basically, that means appending some random text to the password before you hash it.

"The salt value helps to slow an attacker perform a dictionary attack should your credential store be compromised, giving you additional time to detect and react to the compromise."

To store password hashes:

a) Generate a random salt value:

byte[] salt = new byte[32];
System.Security.Cryptography.RNGCryptoServiceProvider.Create().GetBytes(salt);

b) Append the salt to the password.

// Convert the plain string pwd into bytes
byte[] plainTextBytes = System.Text UnicodeEncoding.Unicode.GetBytes(plainText);
// Append salt to pwd before hashing
byte[] combinedBytes = new byte[plainTextBytes.Length + salt.Length];
System.Buffer.BlockCopy(plainTextBytes, 0, combinedBytes, 0, plainTextBytes.Length);
System.Buffer.BlockCopy(salt, 0, combinedBytes, plainTextBytes.Length, salt.Length);

c) Hash the combined password & salt:

// Create hash for the pwd+salt
System.Security.Cryptography.HashAlgorithm hashAlgo = new System.Security.Cryptography.SHA256Managed();
byte[] hash = hashAlgo.ComputeHash(combinedBytes);

d) Append the salt to the resultant hash.

// Append the salt to the hash
byte[] hashPlusSalt = new byte[hash.Length + salt.Length];
System.Buffer.BlockCopy(hash, 0, hashPlusSalt, 0, hash.Length);
System.Buffer.BlockCopy(salt, 0, hashPlusSalt, hash.Length, salt.Length);

e) Store the result in your user store database.

This approach means you don't need to store the salt separately and then recompute the hash using the salt value and the plaintext password value obtained from the user.

Edit: As raw computing power becomes cheaper and faster, the value of hashing -- or salting hashes -- has declined. Jeff Atwood has an excellent 2012 update too lengthy to repeat in its entirety here which states:

This (using salted hashes) will provide the illusion of security more than any actual security. Since you need both the salt and the choice of hash algorithm to generate the hash, and to check the hash, it's unlikely an attacker would have one but not the other. If you've been compromised to the point that an attacker has your password database, it's reasonable to assume they either have or can get your secret, hidden salt.

The first rule of security is to always assume and plan for the worst. Should you use a salt, ideally a random salt for each user? Sure, it's definitely a good practice, and at the very least it lets you disambiguate two users who have the same password. But these days, salts alone can no longer save you from a person willing to spend a few thousand dollars on video card hardware, and if you think they can, you're in trouble.

If you bind your datasource to a datatable for example, you need to set the properties after the binding is done:

        private void dgv_DataBindingComplete(object sender, DataGridViewBindingCompleteEventArgs e)
        {
            dgv.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.None;
            dgv.AutoResizeColumns();
            dgv.AllowUserToResizeColumns = true;
        }

In my case, this error was due to incorrect paths used to specify intents in my preferences xml file after I renamed the project. For instance, where I had:

<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
    <Preference
        android:key="pref_edit_recipe_key"
        android:title="Add/Edit Recipe">
        <intent
            android:action="android.intent.action.VIEW"
            android:targetPackage="com.ssimon.olddirectory"
            android:targetClass="com.ssimon.olddirectory.RecipeEditActivity"/>
    </Preference>
</PreferenceScreen> 

I needed the following instead:

<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
    <Preference
        android:key="pref_edit_recipe_key"
        android:title="Add/Edit Recipe">
        <intent
            android:action="android.intent.action.VIEW"
            android:targetPackage="com.ssimon.newdirectory"
            android:targetClass="com.ssimon.newdirectory.RecipeEditActivity"/>
</Preference>

Correcting the path names fixed the problem.

Slight improvement on @arun-p-johny answer:

In html,

<pre id="log"></pre>

In js,

(function () {
    var old = console.log;
    var logger = document.getElementById('log');
    console.log = function () {
      for (var i = 0; i < arguments.length; i++) {
        if (typeof arguments[i] == 'object') {
            logger.innerHTML += (JSON && JSON.stringify ? JSON.stringify(arguments[i], undefined, 2) : arguments[i]) + '<br />';
        } else {
            logger.innerHTML += arguments[i] + '<br />';
        }
      }
    }
})();

Start using:

console.log('How', true, new Date());

First of all, check out my post on retained Fragments. It might help.

Now to answer your questions:

Does the fragment also retain its view state, or will this be recreated on configuration change - what exactly is "retained"?

Yes, the Fragment's state will be retained across the configuration change. Specifically, "retained" means that the fragment will not be destroyed on configuration changes. That is, the Fragment will be retained even if the configuration change causes the underlying Activity to be destroyed.

Will the fragment be destroyed when the user leaves the activity?

Just like Activitys, Fragments may be destroyed by the system when memory resources are low. Whether you have your fragments retain their instance state across configuration changes will have no effect on whether or not the system will destroy the Fragments once you leave the Activity. If you leave the Activity (i.e. by pressing the home button), the Fragments may or may not be destroyed. If you leave the Activity by pressing the back button (thus, calling finish() and effectively destroying the Activity), all of the Activitys attached Fragments will also be destroyed.

Why doesn't it work with fragments on the back stack?

There are probably multiple reasons why it's not supported, but the most obvious reason to me is that the Activity holds a reference to the FragmentManager, and the FragmentManager manages the backstack. That is, no matter if you choose to retain your Fragments or not, the Activity (and thus the FragmentManager's backstack) will be destroyed on a configuration change. Another reason why it might not work is because things might get tricky if both retained fragments and non-retained fragments were allowed to exist on the same backstack.

Which are the use cases where it makes sense to use this method?

Retained fragments can be quite useful for propagating state information — especially thread management — across activity instances. For example, a fragment can serve as a host for an instance of Thread or AsyncTask, managing its operation. See my blog post on this topic for more information.

In general, I would treat it similarly to using onConfigurationChanged with an Activity... don't use it as a bandaid just because you are too lazy to implement/handle an orientation change correctly. Only use it when you need to.

.

Usage:

CountDownTimer timer = new CountDownTimer();


//set to 30 mins
timer.SetTime(30,0);     

timer.Start();

//update label text
timer.TimeChanged += () => Label1.Text = timer.TimeLeftMsStr; 

// show messageBox on timer = 00:00.000
timer.CountDownFinished += () => MessageBox.Show("Timer finished the work!"); 

//timer step. By default is 1 second
timer.StepMs = 77; // for nice milliseconds time switch

and don't forget to Dispose(); when timer is useless for you;

Source code:

using System;
using System.Diagnostics;
using System.Windows.Forms;

public class CountDownTimer : IDisposable
{
    public Stopwatch _stpWatch = new Stopwatch();

    public Action TimeChanged;
    public Action CountDownFinished;

    public bool IsRunnign => timer.Enabled;

    public int StepMs
    {
        get => timer.Interval;
        set => timer.Interval = value;
    }

    private Timer timer = new Timer();

    private TimeSpan _max = TimeSpan.FromMilliseconds(30000);

    public TimeSpan TimeLeft => (_max.TotalMilliseconds - _stpWatch.ElapsedMilliseconds) > 0 ? TimeSpan.FromMilliseconds(_max.TotalMilliseconds - _stpWatch.ElapsedMilliseconds) : TimeSpan.FromMilliseconds(0);

    private bool _mustStop => (_max.TotalMilliseconds - _stpWatch.ElapsedMilliseconds) < 0;

    public string TimeLeftStr => TimeLeft.ToString(@"\mm\:ss");

    public string TimeLeftMsStr => TimeLeft.ToString(@"mm\:ss\.fff");

    private void TimerTick(object sender, EventArgs e)
    {
        TimeChanged?.Invoke();

        if (_mustStop)
        {
            CountDownFinished?.Invoke();
            _stpWatch.Stop();
            timer.Enabled = false;
        }
    }

    public CountDownTimer(int min, int sec)
    {
        SetTime(min, sec);
        Init();
    }

    public CountDownTimer(TimeSpan ts)
    {
        SetTime(ts);
        Init();
    }

    public CountDownTimer()
    {
        Init();
    }

    private void Init()
    {
        StepMs = 1000;
        timer.Tick += new EventHandler(TimerTick);
    }

    public void SetTime(TimeSpan ts)
    {
        _max = ts;
        TimeChanged?.Invoke();
    }

    public void SetTime(int min, int sec = 0) => SetTime(TimeSpan.FromSeconds(min * 60 + sec));

    public void Start() {
        timer.Start();
        _stpWatch.Start();
    }

    public void Pause()
    {
        timer.Stop();
        _stpWatch.Stop();
    }

    public void Stop()
    {
        Reset();
        Pause();
    }

    public void Reset()
    {
        _stpWatch.Reset();
    }

    public void Restart()
    {
        _stpWatch.Reset();
        timer.Start();
    }

    public void Dispose() => timer.Dispose();
}

(updated 6.6.2020, because of problems with time calculation)

You should do it like this:

function getResults(str) {
  $.ajax({
        url:'suggest.html',
        type:'POST',
        data: 'q=' + str,
        dataType: 'json',
        success: function( json ) {
           $.each(json, function(i, optionHtml){
              $('#myselect').append(optionHtml);
           });
        }
    });
};

Cheers

Here's a generic helper function with assumption checking:

func assumeNoError(value interface{}, err error) interface{} {
    if err != nil {
        panic("error encountered when none assumed:" + err.Error())
    }
    return value
}

Since this returns as an interface{}, you'll generally need to cast it back to your function's return type.

For example, the OP's example called Get(1), which returns (Item, error).

item := assumeNoError(Get(1)).(Item)

The trick that makes this possible: Multi-values returned from one function call can be passed in as multi-variable arguments to another function.

As a special case, if the return values of a function or method g are equal in number and individually assignable to the parameters of another function or method f, then the call f(g(parameters_of_g)) will invoke f after binding the return values of g to the parameters of f in order.

This answer borrows heavily from existing answers, but none had provided a simple, generic solution of this form.

If your test project is set to target a 64bit platform, the tests won't show up in the NUnit Test Adapter.