Programs & Examples On #Generalpasteboard

As it does not answer your question but searching vm arguments I stumbled on this page and there seem to be no other. So if you want to pass vm arguments its like so

{
  "version": "0.2.0",
  "configurations": [
    {
      "type": "java",
      "name": "ddtBatch",
      "request": "launch",
      "mainClass": "com.something.MyApplication",
      "projectName": "MyProject",
      "args": "Hello",
      "vmArgs": "-Dspring.config.location=./application.properties"
    }
  ]
}

One thing you may be able to do is get the address of the dynamic named range, and use that as the input in your SQL string. Something like:

Sheets("shtName").range("namedRangeName").Address

Which will spit out an address string, something like $A$1:$A$8

Edit:

As I said in my comment below, you can dynamically get the full address (including sheet name) and either use it directly or parse the sheet name for later use:

ActiveWorkbook.Names.Item("namedRangeName").RefersToLocal

Which results in a string like =Sheet1!$C$1:$C$4. So for your code example above, your SQL statement could be

strRangeAddress = Mid(ActiveWorkbook.Names.Item("namedRangeName").RefersToLocal,2)

strSQL = "SELECT * FROM [strRangeAddress]"

You are comparing strings. If an arguments are omitted, %1 expands to a blank so the commands become IF =="-b" GOTO SPECIFIC for example (which is a syntax error). Wrap your strings in quotes (or square brackets).

REM this is ok
IF [%1]==[/?] GOTO BLANK

REM I'd recommend using quotes exclusively
IF "%1"=="-b" GOTO SPECIFIC

IF NOT "%1"=="-b" GOTO UNKNOWN

You can get value of key like this...

var obj = {
   a: "A",
   b: "B",
   c: "C"
};

console.log(obj.a);

console.log(obj['a']);

name = "a";
console.log(obj[name])

It's like copy semantics, but instead of having to duplicate all of the data you get to steal the data from the object being "moved" from.

When you are building a basic asp.net website using webcontrols is a good idea when you want to be able to use your controls at more then one location in your website. Separating code from the layout ascx files will be holding the controls that are used to display the layout, the cs files that belong to the ascx files will be holding the code that fills those controls.

For some basic understanding of usercontrols you can try this website

If you are confused what to do, just refer to the manual of session_destroy() function:

http://php.net/manual/en/function.session-destroy.php

There you can find some more features of session_destroy().

In addition to the above, WAMP supports 64 bit PHP on Windows systems while XAMPP only offers 32 bit versions. This actually made me switch to WAMP on my Windows machine since you need 64 bit PHP 7 to get bigint numbers correctly from MySQL

void transfer(double x) {
unsigned long long* p = (unsigned long long*)&x;
for (int i = sizeof(unsigned long long) * 8 - 1; i >= 0; i--) {cout<< ((*p) >>i & 1);}}

Try to use
for today:

SELECT * FROM `tbl_name` where DATE(column_name) = CURDATE()

for selected date:

SELECT * FROM `tbl_name` where DATE(column_name) = DATE('2016-01-14')

Traits are simply for code reuse.

Interface just provides the signature of the functions that is to be defined in the class where it can be used depending on the programmer's discretion. Thus giving us a prototype for a group of classes.

For reference- http://www.php.net/manual/en/language.oop5.traits.php

Maybe you can use this properties:

ActiveCell.Interior.ColorIndex - one of 56 preset colors

and

ActiveCell.Interior.Color - RGB color, used like that:

ActiveCell.Interior.Color = RGB(255,255,255)

1. Change the Package Name in Manifest.
2. A warning box will be said to change into workspace ,press "yes"
3. then right click on src-> refactor -> rename paste your package name

4. select package name and sub package name both

5. press "save" a warning pop ups , press "continue"

name changed successfully

just posting in case anyone else has the same error...

I was using 'await' outside of an 'async' function and for whatever reason that results in a 'missing ) after argument list' error.

The solution was to make the function asynchronous

function functionName(args) {}

becomes

async function functionName(args) {}

Both Promises and Observables provide us with abstractions that help us deal with the asynchronous nature of our applications. The difference between them was pointed out clearly by @Günter and @Relu.

Since a code snippet is worth a thousand words, let go through the below example to understand them easier.

Thanks @Christoph Burgdorf for the awesome article

Angular uses Rx.js Observables instead of promises for dealing with HTTP.

Suppose that you are building a search function that should instantly show you results as you type. Sound familiar but there are a lot of challenges that come with that task.

• We don't want to hit the server endpoint every time user presses a key, it should flood them with a storm of HTTP requests. Basically, we only want to hit it once the user has stopped typing instead of with every keystroke.
• Don’t hit the search endpoint with the same query params for subsequent requests.
• Deal with out-of-order responses. When we have multiple requests in-flight at the same time we must account for cases where they come back in unexpected order. Imagine we first type computer, stop, a request goes out, we type car, stop, a request goes out. Now we have two requests in-flight. Unfortunately, the request that carries the results for computer comes back after the request that carries the results for car.

The demo will simply consist of two files: app.ts and wikipedia-service.ts. In a real world scenario, we would most likely split things further up, though.

Below is Promise-based implementation that doesn’t handle any of the described edge cases.

wikipedia-service.ts

import { Injectable } from '@angular/core';
import { URLSearchParams, Jsonp } from '@angular/http';

@Injectable()
export class WikipediaService {
  constructor(private jsonp: Jsonp) {}

  search (term: string) {
    var search = new URLSearchParams()
    search.set('action', 'opensearch');
    search.set('search', term);
    search.set('format', 'json');
    return this.jsonp
                .get('http://en.wikipedia.org/w/api.php?callback=JSONP_CALLBACK', { search })
                .toPromise()
                .then((response) => response.json()[1]);
  }
}

We are injecting the Jsonp service to make a GET request against the Wikipedia API with a given search term. Notice that we call toPromise in order to get from an Observable<Response> to a Promise<Response>. Eventually end up with a Promise<Array<string>> as the return type of our search method.

app.ts

// check the plnkr for the full list of imports
import {...} from '...';

@Component({
  selector: 'my-app',
  template: `
    <div>
      <h2>Wikipedia Search</h2>
      <input #term type="text" (keyup)="search(term.value)">
      <ul>
        <li *ngFor="let item of items">{{item}}</li>
      </ul>
    </div>
  `
})
export class AppComponent {
  items: Array<string>;

  constructor(private wikipediaService: WikipediaService) {}

  search(term) {
    this.wikipediaService.search(term)
                         .then(items => this.items = items);
  }
}

Not much of a surprise here either. We inject our WikipediaService and expose it’s functionality via a search method to the template. The template simply binds to keyup and calls search(term.value).

We unwrap the result of the Promise that the search method of the WikipediaService returns and expose it as a simple Array of strings to the template so that we can have *ngFor loop through it and build up a list for us.

See the example of Promise-based implementation on Plunker

Where Observables really shine

Let’s change our code to not hammer the endpoint with every keystroke but instead only send a request when the user stopped typing for 400 ms

To unveil such super powers we first need to get an Observable<string> that carries the search term that the user types in. Instead of manually binding to the keyup event, we can take advantage of Angular’s formControl directive. To use this directive, we first need to import the ReactiveFormsModule into our application module.

app.ts

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { JsonpModule } from '@angular/http';
import { ReactiveFormsModule } from '@angular/forms';

@NgModule({
  imports: [BrowserModule, JsonpModule, ReactiveFormsModule]
  declarations: [AppComponent],
  bootstrap: [AppComponent]
})
export class AppModule {}

Once imported, we can use formControl from within our template and set it to the name "term".

<input type="text" [formControl]="term"/>

In our component, we create an instance of FormControl from @angular/form and expose it as a field under the name term on our component.

Behind the scenes, term automatically exposes an Observable<string> as property valueChanges that we can subscribe to. Now that we have an Observable<string>, overcoming the user input is as easy as calling debounceTime(400) on our Observable. This will return a new Observable<string> that will only emit a new value when there haven’t been coming new values for 400ms.

export class App {
  items: Array<string>;
  term = new FormControl();
  constructor(private wikipediaService: WikipediaService) {
    this.term.valueChanges
              .debounceTime(400)        // wait for 400ms pause in events
              .distinctUntilChanged()   // ignore if next search term is same as previous
              .subscribe(term => this.wikipediaService.search(term).then(items => this.items = items));
  }
}

It would be a waste of resources to send out another request for a search term that our app already shows the results for. All we have to do to achieve the desired behavior is to call the distinctUntilChanged operator right after we called debounceTime(400)

See the example of Observable implementation on Plunker

For dealing with out-of-order responses, please check the full article http://blog.thoughtram.io/angular/2016/01/06/taking-advantage-of-observables-in-angular2.html

As far as I am using Http in Angular, I agree that in the normal use cases there is not much difference when using Observable over Promise. None of the advantages are really relevant here in practice. Hope I can see some advanced use case in the future :)

Learn more

• https://angular-2-training-book.rangle.io/handout/observables/
• https://angular.io/tutorial/toh-pt6#observables

You have a couple of options here, I think.

One would be to use a BackgroundWorker. This is a common helper for multithreading in applications. It exposes a DoWork event which is handled on a background thread from the Thread Pool and a RunWorkerCompleted event which is invoked back on the main thread when the background thread completes. It also has the benefit of try/catching the code running on the background thread so that an unhandled exception doesn't kill the application.

If you don't want to go that route, you can use the WPF dispatcher object to invoke an action to update the GUI back onto the main thread. Random reference:

http://www.switchonthecode.com/tutorials/working-with-the-wpf-dispatcher

There are many other options around too, but these are the two most common that come to mind.

In general, when "Bad File Descriptor" is encountered, it means that the socket file descriptor you passed into the API is not valid, which has multiple possible reasons:

1. The fd is already closed somewhere.
2. The fd has a wrong value, which is inconsistent with the value obtained from socket() api

Your problem is often due to looking in the wrong place for the image, or if your classes and images are in a jar file, then looking for files where files don't exist. I suggest that you use resources to get rid of the second problem.

e.g.,

// the path must be relative to your *class* files
String imagePath = "res/Image.png";
InputStream imgStream = Game.class.getResourceAsStream(imagePath );
BufferedImage myImg = ImageIO.read(imgStream);
// ImageIcon icon = new ImageIcon(myImg);

// use icon here
game.frame.setIconImage(myImg);

In order to verify a client certificate is being sent to the server, you need to analyze the output from the combination of the -state and -debug flags.

First as a baseline, try running

$ openssl s_client -connect host:443 -state -debug

You'll get a ton of output, but the lines we are interested in look like this:

SSL_connect:SSLv3 read server done A
write to 0x211efb0 [0x21ced50] (12 bytes => 12 (0xC))
0000 - 16 03 01 00 07 0b 00 00-03                        .........
000c - <SPACES/NULS>
SSL_connect:SSLv3 write client certificate A

What's happening here:

• The -state flag is responsible for displaying the end of the previous section:

  SSL_connect:SSLv3 read server done A  
  

  This is only important for helping you find your place in the output.

• Then the -debug flag is showing the raw bytes being sent in the next step:

  write to 0x211efb0 [0x21ced50] (12 bytes => 12 (0xC))
  0000 - 16 03 01 00 07 0b 00 00-03                        .........
  000c - <SPACES/NULS>
  

• Finally, the -state flag is once again reporting the result of the step that -debug just echoed:

  SSL_connect:SSLv3 write client certificate A
  

So in other words: s_client finished reading data sent from the server, and sent 12 bytes to the server as (what I assume is) a "no client certificate" message.

If you repeat the test, but this time include the -cert and -key flags like this:

$ openssl s_client -connect host:443 \
   -cert cert_and_key.pem \
   -key cert_and_key.pem  \
   -state -debug

your output between the "read server done" line and the "write client certificate" line will be much longer, representing the binary form of your client certificate:

SSL_connect:SSLv3 read server done A
write to 0x7bd970 [0x86d890] (1576 bytes => 1576 (0x628))
0000 - 16 03 01 06 23 0b 00 06-1f 00 06 1c 00 06 19 31   ....#..........1
(*SNIP*)
0620 - 95 ca 5e f4 2f 6c 43 11-                          ..^%/lC.
SSL_connect:SSLv3 write client certificate A

The 1576 bytes is an excellent indication on its own that the cert was transmitted, but on top of that, the right-hand column will show parts of the certificate that are human-readable: You should be able to recognize the CN and issuer strings of your cert in there.

This method seems ok in all browsers, if you set the onclick with a jQuery event:

<a href="javascript:;">Click me!</a>

As said before, href="#" with change the url hash and can trigger data re/load if you use a History (or ba-bbq) JS plugin.

#include <iostream>

//////////////
// C++ code //
//////////////
struct A
{
  int i;
  int j;

  A() {i=1; j=2; std::cout << "class A created\n";}
  void dump() {std::cout << "class A dumped: " << i << ":" << j << std::endl;}
  ~A() {std::cout << "class A destroyed\n";}
};

extern "C" {
  // this is the C code interface to the class A
  static void *createA (void)
  {
    // create a handle to the A class
    return (void *)(new A);
  }
  static void dumpA (void *thisPtr)
  {
    // call A->dump ()
    if (thisPtr != NULL) // I'm an anal retentive programmer
    {
      A *classPtr = static_cast<A *>(thisPtr);
      classPtr->dump ();
    }
  }
  static void *deleteA (void *thisPtr)
  {
    // destroy the A class
    if (thisPtr != NULL)
    {
      delete (static_cast<A *>(thisPtr));
    }
  }
}

////////////////////////////////////
// this can be compiled as C code //
////////////////////////////////////
int main (int argc, char **argv)
{
  void *handle = createA();

  dumpA (handle);
  deleteA (handle);

  return 0;
}

Two things. First, you must base64 decode the mykey.pem file yourself. Second, the openssl private key format is specified in PKCS#1 as the RSAPrivateKey ASN.1 structure. It is not compatible with java's PKCS8EncodedKeySpec, which is based on the SubjectPublicKeyInfo ASN.1 structure. If you are willing to use the bouncycastle library you can use a few classes in the bouncycastle provider and bouncycastle PKIX libraries to make quick work of this.

import java.io.BufferedReader;
import java.io.FileReader;
import java.security.KeyPair;
import java.security.Security;

import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.bouncycastle.openssl.PEMKeyPair;
import org.bouncycastle.openssl.PEMParser;
import org.bouncycastle.openssl.jcajce.JcaPEMKeyConverter;

// ...   

String keyPath = "mykey.pem";
BufferedReader br = new BufferedReader(new FileReader(keyPath));
Security.addProvider(new BouncyCastleProvider());
PEMParser pp = new PEMParser(br);
PEMKeyPair pemKeyPair = (PEMKeyPair) pp.readObject();
KeyPair kp = new JcaPEMKeyConverter().getKeyPair(pemKeyPair);
pp.close();
samlResponse.sign(Signature.getInstance("SHA1withRSA").toString(), kp.getPrivate(), certs);

Summary of all answers (Advantages & Disadvantages)

For single recyclerview

you can use it inside Coordinator layout.

Advantage - it will not load entire recyclerview items. So smooth loading.

Disadvantage - you can't load two recyclerview inside Coordinator layout - it produce scrolling problems

reference - https://stackoverflow.com/a/33143512/3879847

For multiple recylerview with minimum rows

you can load inside NestedScrollView

Advantage - it will scroll smoothly

Disadvantage - It load all rows of recyclerview so your activity open with delay

reference - https://stackoverflow.com/a/33143512/3879847

For multiple recylerview with large rows(more than 100)

You must go with recyclerview.

Advantage - Scroll smoothly, load smoothly

Disadvantage - You need to write more code and logic

Load each recylerview inside main recyclerview with help of multi-viewholders

ex:

MainRecyclerview

-ChildRecyclerview1 (ViewHolder1)

-ChildRecyclerview2 (ViewHolder2)

-ChildRecyclerview3 (ViewHolder3) 

-Any other layout   (ViewHolder4)

Reference for multi-viewHolder - https://stackoverflow.com/a/26245463/3879847

If you don't have the source code and API documentation, the machine code is all there is, you need to disassemble the dll library using something like IDA Pro , another option is use the trial version of PE Explorer.

PE Explorer provides a Disassembler. There is only one way to figure out the parameters: run the disassembler and read the disassembly output. Unfortunately, this task of reverse engineering the interface cannot be automated.

PE Explorer comes bundled with descriptions for 39 various libraries, including the core Windows® operating system libraries (eg. KERNEL32, GDI32, USER32, SHELL32, WSOCK32), key graphics libraries (DDRAW, OPENGL32) and more.

_{(source: heaventools.com)}

Another simple way is to use the pivot function to format the data as you need first.

df.plot() does the rest

df = pd.DataFrame([
    ['red', 0, 0],
    ['red', 1, 1],
    ['red', 2, 2],
    ['red', 3, 3],
    ['red', 4, 4],
    ['red', 5, 5],
    ['red', 6, 6],
    ['red', 7, 7],
    ['red', 8, 8],
    ['red', 9, 9],
    ['blue', 0, 0],
    ['blue', 1, 1],
    ['blue', 2, 4],
    ['blue', 3, 9],
    ['blue', 4, 16],
    ['blue', 5, 25],
    ['blue', 6, 36],
    ['blue', 7, 49],
    ['blue', 8, 64],
    ['blue', 9, 81],
], columns=['color', 'x', 'y'])

df = df.pivot(index='x', columns='color', values='y')

df.plot()

pivot effectively turns the data into:

Actually I am preferring to use NEW_BROKER ,it is working fine on all cases:

ALTER DATABASE [dbname] SET NEW_BROKER WITH ROLLBACK IMMEDIATE;

/**
 * Loads data asynchronously via JSONP.
 */
const load = (() => {
  let index = 0;
  const timeout = 5000;

  return url => new Promise((resolve, reject) => {
    const callback = '__callback' + index++;
    const timeoutID = window.setTimeout(() => {
      reject(new Error('Request timeout.'));
    }, timeout);

    window[callback] = response => {
      window.clearTimeout(timeoutID);
      resolve(response.data);
    };

    const script = document.createElement('script');
    script.type = 'text/javascript';
    script.async = true;
    script.src = url + (url.indexOf('?') === -1 ? '?' : '&') + 'callback=' + callback;
    document.getElementsByTagName('head')[0].appendChild(script);
  });
})();

Usage sample:

const data = await load('http://api.github.com/orgs/kriasoft');

Actually this is not a duplicate question. And this how i solve my problem after several times :

   int offset = DateTimeZone.forID("anytimezone").getOffset(new DateTime());

This is the way to get offset from desired timezone.

Let's return to our code, we were getting timestamp from a result set of query, and using it with timezone to create our datetime.

   DateTime dt = new DateTime(rs.getTimestamp("anytimestampcolumn"),
                         DateTimeZone.forID("anytimezone"));

Now we will add our offset to the datetime, and get the timestamp from it.

    dt = dt.plusMillis(offset);
    Timestamp ts = new Timestamp(dt.getMillis());

May be this is not the actual way to get it, but it solves my case. I hope it helps anyone who is stuck here.

MSBuild is your friend.

msbuild "C:\path to solution\project.sln"

This should work

<option *ngFor="let title of titleArray" 
    [value]="title.Value" 
    [attr.selected]="passenger.Title==title.Text ? true : null">
  {{title.Text}}
</option>

I'm not sure the attr. part is necessary.

import time
import datetime

# use mktime to step by one day
# end - the last day, numdays - count of days to step back
def gen_dates_list(end, numdays):
  start = end - datetime.timedelta(days=numdays+1)
  end   = int(time.mktime(end.timetuple()))
  start = int(time.mktime(start.timetuple()))
  # 86400 s = 1 day
  return xrange(start, end, 86400)

# if you need reverse the list of dates
for dt in reversed(gen_dates_list(datetime.datetime.today(), 100)):
    print datetime.datetime.fromtimestamp(dt).date()

This doesn't show the filenames, but at least you get a feel of the repository.

cat .git/refs/tags/*

Each file in that directory contains a commit SHA pointing to a commit.

Here is my simple understanding.

Problem: The value 0.45 cannot be accurately be represented by a float and is rounded up to 0.450000018. Why is that?

Answer: An int value of 45 is represented by the binary value 101101. In order to make the value 0.45 it would be accurate if it you could take 45 x 10^-2 (= 45 / 10^2.) But that’s impossible because you must use the base 2 instead of 10.

So the closest to 10^2 = 100 would be 128 = 2^7. The total number of bits you need is 9 : 6 for the value 45 (101101) + 3 bits for the value 7 (111). Then the value 45 x 2^-7 = 0.3515625. Now you have a serious inaccuracy problem. 0.3515625 is not nearly close to 0.45.

How do we improve this inaccuracy? Well we could change the value 45 and 7 to something else.

How about 460 x 2^-10 = 0.44921875. You are now using 9 bits for 460 and 4 bits for 10. Then it’s a bit closer but still not that close. However if your initial desired value was 0.44921875 then you would get an exact match with no approximation.

So the formula for your value would be X = A x 2^B. Where A and B are integer values positive or negative. Obviously the higher the numbers can be the higher would your accuracy become however as you know the number of bits to represent the values A and B are limited. For float you have a total number of 32. Double has 64 and Decimal has 128.

There's a note on the ahpi.imgload.js plugin at the moment saying that it is currently broken, and to try this gist instead: https://gist.github.com/797120/7176db676f1e0e20d7c23933f9fc655c2f120c58

This is normally the case then the ID is not a natural part of the entity, but a database artifact that needs be abstracted away.

It is a design decision - to only allow setting the ID during construction or through method invocation, so it is managed internally by the class.

You can write a setter yourself, assuming you have a backing field:

private int Id = 0;
public void SetId (int id)
{
  this.Id = id;
}

Or through a constructor:

private int Id = 0;
public Person (int id)
{
  this.Id = id;
}

you can also use

.detail_container h1:nth-of-type(1)

By changing the number 1 by any other number you can select any other h1 item.

Execute this code on a good server which will provide you the complete rights for PUBLIC role. Copy the output and paste to the server with the issue. Execute. Try logging in again. It fixed our problem.

SELECT  SDP.state_desc ,
        SDP.permission_name ,
        SSU.[name] AS "Schema" ,
        SSO.[name] ,
        SSO.[type]
FROM    sys.sysobjects SSO
        INNER JOIN sys.database_permissions SDP ON SSO.id = SDP.major_id
        INNER JOIN sys.sysusers SSU ON SSO.uid = SSU.uid
ORDER BY SSU.[name] ,
        SSO.[name]

All the answers here either allow URLs with other schemes (e.g., file://, ftp://) or reject human-readable URLs that don't start with http:// or https:// (e.g., www.google.com) which is not good when dealing with user inputs.

Here's how I do it:

public static bool ValidHttpURL(string s, out Uri resultURI)
{
    if (!Regex.IsMatch(s, @"^https?:\/\/", RegexOptions.IgnoreCase))
        s = "http://" + s;

    if (Uri.TryCreate(s, UriKind.Absolute, out resultURI))
        return (resultURI.Scheme == Uri.UriSchemeHttp || 
                resultURI.Scheme == Uri.UriSchemeHttps);

    return false;
}

Usage:

string[] inputs = new[] {
                          "https://www.google.com",
                          "http://www.google.com",
                          "www.google.com",
                          "google.com",
                          "javascript:alert('Hack me!')"
                        };
foreach (string s in inputs)
{
    Uri uriResult;
    bool result = ValidHttpURL(s, out uriResult);
    Console.WriteLine(result + "\t" + uriResult?.AbsoluteUri);
}

Output:

True    https://www.google.com/
True    http://www.google.com/
True    http://www.google.com/
True    http://google.com/
False

From the link in the error message:

This occurs when the default configuration files log4j.properties and log4j.xml can not be found and the application performs no explicit configuration. log4j uses Thread.getContextClassLoader().getResource() to locate the default configuration files and does not directly check the file system. Knowing the appropriate location to place log4j.properties or log4j.xml requires understanding the search strategy of the class loader in use. log4j does not provide a default configuration since output to the console or to the file system may be prohibited in some environments. Also see FAQ: Why can't log4j find my properties in a J2EE or WAR application?.

The configuration file cannot be found. Are you using xml or a property file??

Also, use logback!

I faced a similar issue. I checked for the below:

1. if ssh is not installed on your machine, you will have to install it firstly. (You will get a message saying ssh is not recognized as a command).
2. Port 22 is open or not on the server you are trying to ssh.
3. If the control of remote server is in your hands and you have permissions, try to disable firewall on it.
4. Try to ssh again.

If port is not an issue then you would have to check for firewall settings as it is the one that is blocking your connection.

For me too it was a firewall issue between my machine and remote server.I disabled the firewall on the remote server and I was able to make a connection using ssh.

To be totally exhaustive, things are different if you're using a JPA 1.0 or a JPA 2.0 implementation.

JPA 1.0

With JPA 1.0, you'd have to use EntityManager#getDelegate(). But keep in mind that the result of this method is implementation specific i.e. non portable from application server using Hibernate to the other. For example with JBoss you would do:

org.hibernate.Session session = (Session) manager.getDelegate();

But with GlassFish, you'd have to do:

org.hibernate.Session session = ((org.hibernate.ejb.EntityManagerImpl) em.getDelegate()).getSession(); 

I agree, that's horrible, and the spec is to blame here (not clear enough).

JPA 2.0

With JPA 2.0, there is a new (and much better) EntityManager#unwrap(Class<T>) method that is to be preferred over EntityManager#getDelegate() for new applications.

So with Hibernate as JPA 2.0 implementation (see 3.15. Native Hibernate API), you would do:

Session session = entityManager.unwrap(Session.class);

I think you can also use a postgres backup container which would backup your databases within a given time duration.

  pgbackups:
    container_name: Backup
    image: prodrigestivill/postgres-backup-local
    restart: always
    volumes:
      - ./backup:/backups
    links:
      - db:db
    depends_on:
      - db
    environment:
      - POSTGRES_HOST=db
      - POSTGRES_DB=${DB_NAME} 
      - POSTGRES_USER=${DB_USER}
      - POSTGRES_PASSWORD=${DB_PASSWORD}
      - POSTGRES_EXTRA_OPTS=-Z9 --schema=public --blobs
      - SCHEDULE=@every 0h30m00s
      - BACKUP_KEEP_DAYS=7
      - BACKUP_KEEP_WEEKS=4
      - BACKUP_KEEP_MONTHS=6
      - HEALTHCHECK_PORT=81

Using PowerShell, you can use the following

Get-Service | Where-Object {$_.displayName.StartsWith("NATION-")} | Select name

This will show a list off all services which displayname starts with "NATION-".

You can also directly stop or start the services;

Get-Service | Where-Object {$_.displayName.StartsWith("NATION-")} | Stop-Service
Get-Service | Where-Object {$_.displayName.StartsWith("NATION-")} | Start-Service

or simply

Get-Service | Where-Object {$_.displayName.StartsWith("NATION-")} | Restart-Service

Count the number of digits w/o convert integer to a string:

x=123
x=abs(x)
i = 0
while x >= 10**i:
    i +=1
# i is the number of digits

left(currentdb.Name,instr(1,currentdb.Name,dir(currentdb.Name))-1)

The Dir function will return only the file portion of the full path. Currentdb.Name is used here, but it could be any full path string.

Here is an update for 2013.

Ruby

Ruby 1.9 has a default JSON gem with C extensions. You can use it with

require 'json'
JSON.parse ''{ "x": "y" }'
# => {"x"=>"y"}

The parse! variant can be used for safe sources. There are also other gems, which may be faster than the default implementation. Please refer to multi_json for the list.

Rails

Modern versions of Rails use multi_json, a gem that automatically uses the fastest JSON gem available. Thus, the recommended way is to use

object = ActiveSupport::JSON.decode json_string

Please refer to ActiveSupport::JSON for more information. In particular, the important line in the method source is

data = MultiJson.load(json, options)

Then in your Gemfile, include the gems you want to use. For example,

group :production do
  gem 'oj'
end

The best security practice is not to store the password at all (not even encrypted), but to store the salted hash (with a unique salt per password) of the encrypted password.

That way it is (practically) impossible to retrieve a plaintext password.

don't they both keep a value for another request?

Yes they do, but when the first one is void, the second one returns and object:

public void Keep(string key)
{
    _retainedKeys.Add(key); // just adds the key to the collection for retention
}

public object Peek(string key)
{
    object value;
    _data.TryGetValue(key, out value);
    return value; // returns an object without marking it for deletion
}

If you are using an executable,

• just run the executable (for example: "en_sql_server_2012_express_edition_with_advanced_services_x64.exe")
• Navigate to the "options" tab
• Copy the "Installation Media Root Directory" (should look something like the below snipping)
• Paste it into the open "Browse for SQL server Installation Media" window

Save yourself the hastle of renaming and unzipping etc.!

It's not much of an answer, but you might need to go old school and capture an image snapshot of the IIS process and debug it. You might also want to check out Tess Ferrandez's blog - she is a kick a** microsoft escalation engineer and her blog focuses on debugging windows ASP.NET, but the blog is relevant to windows debugging in general. If you select the ASP.NET tag (which is what I've linked to) then you'll see several items that are similar.

You can also try this:

data = ['itemA.ABC', 'itemB.defg', 'itemC.drug', 'itemD.ashok']
x = []
for (i, item) in enumerate(data):
      a = (i, str(item).split('.'))
      x.append(a)
for index, value in x:
     print(index, value)

The output is

0 ['itemA', 'ABC']
1 ['itemB', 'defg']
2 ['itemC', 'drug']
3 ['itemD', 'ashok']

You might need to change the line

@RequestMapping(value = "/add", method = RequestMethod.GET)

to

@RequestMapping(value = "/add", method = {RequestMethod.GET,RequestMethod.POST})

You probably mean a truth table for the boolean operators, which displays the result of the usual boolean operations (&&, ||). This table is not language-specific, but can be found e.g. here.

select * 
from blah 
where DatetimeField between '22/02/2009 09:00:00.000' and '23/05/2009 10:30:00.000'

Depending on the country setting for the login, the month/day may need to be swapped around.

For method decorator declaration with configuration "noImplicitAny": true, you can specify type of this variable explicitly depends on @tony19's answer

function logParameter(this:any, target: Object, propertyName: string) {
  //...
}

Your first formulation, image_url('logo.png'), is correct. If the image is found, it will generate the path /assets/logo.png (plus a hash in production). However, if Rails cannot find the image that you named, it will fall back to /images/logo.png.

The next question is: why isn't Rails finding your image? If you put it in app/assets/images/logo.png, then you should be able to access it by going to http://localhost:3000/assets/logo.png.

If that works, but your CSS isn't updating, you may need to clear the cache. Delete tmp/cache/assets from your project directory and restart the server (webrick, etc.).

If that fails, you can also try just using background-image: url(logo.png); That will cause your CSS to look for files with the same relative path (which in this case is /assets).

There is already an AI implementation for this game here. Excerpt from README:

The algorithm is iterative deepening depth first alpha-beta search. The evaluation function tries to keep the rows and columns monotonic (either all decreasing or increasing) while minimizing the number of tiles on the grid.

There is also a discussion on Hacker News about this algorithm that you may find useful.

You can also use ReadString with \n as a separator:

  f, err := os.Open(filename)
  if err != nil {
    fmt.Println("error opening file ", err)
    os.Exit(1)
  }
  defer f.Close()
  r := bufio.NewReader(f)
  for {
    path, err := r.ReadString(10) // 0x0A separator = newline
    if err == io.EOF {
      // do something here
      break
    } else if err != nil {
      return err // if you return error
    }
  }

Install latest java jdk and your problem will be solved.

Debug version of the vc++ library dlls are NOT meant to be redistributed!

Debug versions of an application are not redistributable, and debug versions of the Visual C++ library DLLs are not redistributable. You may deploy debug versions of applications and Visual C++ DLLs only to your other computers, for the sole purpose of debugging and testing the applications on a computer that does not have Visual Studio installed. For more information, see Redistributing Visual C++ Files.

I will provide the link as well : http://msdn.microsoft.com/en-us/library/aa985618.aspx

Marco13 already provided an excellent answer.

In case you are in search for a way to use the GPU without implementing CUDA/OpenCL kernels, I would like to add a reference to the finmath-lib-cuda-extensions (finmath-lib-gpu-extensions) http://finmath.net/finmath-lib-cuda-extensions/ (disclaimer: I am the maintainer of this project).

The project provides an implementation of "vector classes", to be precise, an interface called RandomVariable, which provides arithmetic operations and reduction on vectors. There are implementations for the CPU and GPU. There are implementation using algorithmic differentiation or plain valuations.

The performance improvements on the GPU are currently small (but for vectors of size 100.000 you may get a factor > 10 performance improvements). This is due to the small kernel sizes. This will improve in a future version.

The GPU implementation use JCuda and JOCL and are available for Nvidia and ATI GPUs.

The library is Apache 2.0 and available via Maven Central.

Taking care of whether the array starts at zero or one. Also, when position 0 or 1 is returned by the function, making sure that the same is not confused as True or False returned by the function.

Function array_return_index(arr As Variant, val As Variant, Optional array_start_at_zero As Boolean = True) As Variant

Dim pos
pos = Application.Match(val, arr, False)

If Not IsError(pos) Then
    If array_start_at_zero = True Then
        pos = pos - 1
        'initializing array at 0
    End If
   array_return_index = pos
Else
   array_return_index = False
End If

End Function

Sub array_return_index_test()
Dim pos, arr, val

arr = Array(1, 2, 4, 5)
val = 1

'When array starts at zero
pos = array_return_index(arr, val)
If IsNumeric(pos) Then
MsgBox "Array starting at 0; Value found at : " & pos
Else
MsgBox "Not found"
End If

'When array starts at one
pos = array_return_index(arr, val, False)
If IsNumeric(pos) Then
MsgBox "Array starting at 1; Value found at : " & pos
Else
MsgBox "Not found"
End If



End Sub

Create custom style in style.xml

<style name="EditTextHint" parent="TextAppearance.AppCompat">
    <item name="colorAccent">@android:color/white</item>
    <item name="android:textColorHint">@color/BackgroundtWhiteColor</item>
    <item name="colorControlNormal">@color/BackgroundtWhiteColor</item>
    <item name="colorControlActivated">@color/your color</item>
    <item name="colorControlHighlight">@color/BackgroundtWhiteColor</item>
</style>

Then in your layout xml file, add theme attribute as below

 <android.support.design.widget.TextInputLayout
            android:theme="@style/EditTextHint"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

      <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"/>

</android.support.design.widget.TextInputLayout>

hope this works

uint16_t is unsigned 16-bit integer.

unsigned short int is unsigned short integer, but the size is implementation dependent. The standard only says it's at least 16-bit (i.e, minimum value of UINT_MAX is 65535). In practice, it usually is 16-bit, but you can't take that as guaranteed.

Note:

1. If you want a portable unsigned 16-bit integer, use uint16_t.
2. inttypes.h and stdint.h are both introduced in C99. If you are using C89, define your own type.
3. uint16_t may not be provided in certain implementation(See reference below), but unsigned short int is always available.

Reference: C11(ISO/IEC 9899:201x) §7.20 Integer types

For each type described herein that the implementation provides) shall declare that typedef name and define the associated macros. Conversely, for each type described herein that the implementation does not provide, shall not declare that typedef name nor shall it define the associated macros. An implementation shall provide those types described as ‘‘required’’, but need not provide any of the others (described as ‘optional’’).

I'm pretty mixed up on this. I am also running Excel 2010. I tried saving two sheets as a single PDF using:

    ThisWorkbook.Sheets(Array(1,2)).Select
    **Selection**.ExportAsFixedFormat xlTypePDF, FileName & ".pdf", , , False

but I got nothing but blank pages. It saved both sheets, but nothing on them. It wasn't until I used:

    ThisWorkbook.Sheets(Array(1,2)).Select
    **ActiveSheet**.ExportAsFixedFormat xlTypePDF, FileName & ".pdf", , , False

that I got a single PDF file with both sheets.

I tried manually saving these two pages using Selection in the Options dialog to save the two sheets I had selected, but got blank pages. When I tried the Active Sheet(s) option, I got what I wanted. When I recorded this as a macro, Excel used ActiveSheet when it successfully published the PDF. What gives?

Apply does the job well, but is quite slow. Using sapply and vapply could be useful. dplyr's rowwise could also be useful Let's see an example of how to do row wise product of any data frame.

a = data.frame(t(iris[1:10,1:3]))
vapply(a, prod, 0)
sapply(a, prod)

Note that assigning to variable before using vapply/sapply/ apply is good practice as it reduces time a lot. Let's see microbenchmark results

a = data.frame(t(iris[1:10,1:3]))
b = iris[1:10,1:3]
microbenchmark::microbenchmark(
    apply(b, 1 , prod),
    vapply(a, prod, 0),
    sapply(a, prod) , 
    apply(iris[1:10,1:3], 1 , prod),
    vapply(data.frame(t(iris[1:10,1:3])), prod, 0),
    sapply(data.frame(t(iris[1:10,1:3])), prod) ,
    b %>%  rowwise() %>%
        summarise(p = prod(Sepal.Length,Sepal.Width,Petal.Length))
)

Have a careful look at how t() is being used

Quick fix for the issue described by @Malachiasz

I've fixed the issue by adding custom support for this in the auto resize class:

public void setTextCompat(final CharSequence text) {
    setTextCompat(text, BufferType.NORMAL);
}

public void setTextCompat(final CharSequence text, BufferType type) {
    // Quick fix for Android Honeycomb and Ice Cream Sandwich which sets the text only on the first call
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR1 &&
        Build.VERSION.SDK_INT <= Build.VERSION_CODES.ICE_CREAM_SANDWICH_MR1) {
        super.setText(DOUBLE_BYTE_WORDJOINER + text + DOUBLE_BYTE_WORDJOINER, type);
    } else {
        super.setText(text, type);
    }
}

@Override
public CharSequence getText() {
    String originalText = super.getText().toString();
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR1 &&
        Build.VERSION.SDK_INT <= Build.VERSION_CODES.ICE_CREAM_SANDWICH_MR1) {
        // We try to remove the word joiners we added using compat method - if none found - this will do nothing.
        return originalText.replaceAll(DOUBLE_BYTE_WORDJOINER, "");
    } else {
        return originalText;
    }
}

Just call yourView.setTextCompat(newTextValue) instead of yourView.setText(newTextValue)

To remove error from eclipse for android there are few steps:-

1.open eclipse check all the error

2.In search tab open SDK manager

3.Remove all the value show as error in eclipse

4.After remove from sdk restart eclipse

Should use ngChange instead of ngClick if trigger source is not from click.

Is the below what you want ? what exactly doesn't work in your case ?

var myApp = angular.module('myApp', []);

function MyCtrl($scope) {
    $scope.value = "none" ;
    $scope.isChecked = false;
    $scope.checkStuff = function () {
        $scope.isChecked = !$scope.isChecked;
    }
}


<div ng-controller="MyCtrl">
    <input type="radio" ng-model="value" value="one" ng-change="checkStuff()" />
    <span> {{value}} isCheck:{{isChecked}} </span>
</div>   

One of the answers in the question referred to by @Z.Bagley gave me the answer. I had to import Renderer2 from @angular/core into my component. Then:

const element = this.renderer.selectRootElement('#input1');

// setTimeout(() => element.focus, 0);
setTimeout(() => element.focus(), 0);

Thank you @MrBlaise for the solution!

Use variables i.e. the .BAT variables and called %0 to %9

I resolved this problem by renaming the DLL. The DLL had been manually renamed when it was uploaded to its shared location (a version number was appended to the file name). Removing the version number from the downloaded file resolved the issue.

All you have to do is just change the hard coded value in the code provided below

DECLARE @firstDate datetime
    DECLARE @secondDate datetime
    DECLARE @totalDays  INT
    SELECT @firstDate = getDate() - 30
    SELECT @secondDate = getDate()

    DECLARE @index INT
    SELECT @index = 0
    SELECT @totalDays = datediff(day, @firstDate, @secondDate)

    CREATE TABLE #temp
    (
         ID INT NOT NULL IDENTITY(1,1)
        ,CommonDate DATETIME NULL
    )

    WHILE @index < @totalDays
        BEGIN

            INSERT INTO #temp (CommonDate) VALUES  (DATEADD(Day, @index, @firstDate))   
            SELECT @index = @index + 1
        END

    SELECT CONVERT(VARCHAR(10), CommonDate, 102) as [Date Between] FROM #temp

    DROP TABLE #temp

i tried to reproduce your findings, but when I watched 'i' in the debugger it showed up as '6.8999999999999995' not as '6.89999999999999946709' as you wrote in the question. Can you provide steps to reproduce what you saw?

To see what the debugger shows you, you can use a DoubleConverter as in the following line of code:

Console.WriteLine(TypeDescriptor.GetConverter(i).ConvertTo(i, typeof(string)));

Hope this helps!

Edit: I guess I'm more tired than I thought, of course this is the same as formatting to the roundtrip value (as mentioned before).

You can embed all dlls in you main dll. See: Embedding DLLs in a compiled executable

I not be able to find squid number in sonar 5.6, with this annotation also works:

@SuppressWarnings({"pmd:AvoidCatchingGenericException", "checkstyle:com.puppycrawl.tools.checkstyle.checks.coding.IllegalCatchCheck"})

For anyone using nativescript and facing this issue: you can add

compileSdkVersion 26
buildToolsVersion '26.0.1'

in App_Resources/Android/app.gradle (under android {)

Then run tns platform remove android and tns build android in your project root.

Above answers are in python2. So for python 3 users I am giving this answer. You can use the bellow code:

import pandas as pd
fields = ['star_name', 'ra']

df = pd.read_csv('data.csv', skipinitialspace=True, usecols=fields)
# See the keys
print(df.keys())
# See content in 'star_name'
print(df.star_name)

So here is my solution (similar to John Vance's answer):

First go here and get a function to detect mobile browsers.

http://detectmobilebrowsers.com/

They have a lot of different ways to detect if you are on mobile, so find one that works with what you are using.

Your HTML page (pseudo code):

If Mobile Then
    <input id="selling-date" type="date" placeholder="YYYY-MM-DD" max="2999-12-31" min="2010-01-01" value="2015-01-01" />
else
    <input id="selling-date" type="text" class="date-picker" readonly="readonly" placeholder="YYYY-MM-DD" max="2999-12-31" min="2010-01-01" value="2015-01-01" />

JQuery:

$( ".date-picker" ).each(function() {
    var min = $( this ).attr("min");
    var max = $( this ).attr("max");
    $( this ).datepicker({ 
        dateFormat: "yy-mm-dd",  
        minDate: min,  
        maxDate: max  
    });
});

This way you can still use native date selectors in mobile while still setting the min and max dates either way.

The field for non mobile should be read only because if a mobile browser like chrome for ios "requests desktop version" then they can get around the mobile check and you still want to prevent the keyboard from showing up.

However if the field is read only it could look to a user like they cant change the field. You could fix this by changing the CSS to make it look like it isn't read only (ie change border-color to black) but unless you are changing the CSS for all input tags you will find it hard to keep the look consistent across browsers.

To get arround that I just add a calendar image button to the date picker. Just change your JQuery code a bit:

$( ".date-picker" ).each(function() {
    var min = $( this ).attr("min");
    var max = $( this ).attr("max");
    $( this ).datepicker({ 
        dateFormat: "yy-mm-dd",  
        minDate: min,  
        maxDate: max,
        showOn: "both",
        buttonImage: "images/calendar.gif",
        buttonImageOnly: true,
        buttonText: "Select date"
    });
});

Note: you will have to find a suitable image.

The similar problem occurs in aspdotnet core with the same error The program '[xxxx] iisexpress.exe' has exited with code -1073741816 (0xc0000008).

Log file setup in web.config did not produce any info also:

<aspNetCore  stdoutLogEnabled="true" stdoutLogFile=".\logs\stdout" />

To find exact error the next step with log info in command prompt helped:

> dotnet restore
> dotnet run

In my case the problem was in dotnet core v 1.0.0 installed, while version 1.0.1 was required to be globally installed.

If you want to link, say, libapplejuice statically, but not, say, liborangejuice, you can link like this:

gcc object1.o object2.o -Wl,-Bstatic -lapplejuice -Wl,-Bdynamic -lorangejuice -o binary

There's a caveat -- if liborangejuice uses libapplejuice, then libapplejuice will be dynamically linked too.

You'll have to link liborangejuice statically alongside with libapplejuice to get libapplejuice static.

And don't forget to keep -Wl,-Bdynamic else you'll end up linking everything static, including libc (which isn't a good thing to do).

See the documentation on setting up a pipeline using subprocess: http://docs.python.org/2/library/subprocess.html#replacing-shell-pipeline

I haven't tested the following code example but it should be roughly what you want:

query = "process_name"
ps_process = Popen(["ps", "-A"], stdout=PIPE)
grep_process = Popen(["grep", query], stdin=ps_process.stdout, stdout=PIPE)
ps_process.stdout.close()  # Allow ps_process to receive a SIGPIPE if grep_process exits.
output = grep_process.communicate()[0]

Use the SimpleDateFormat class:

private Date parseDate(String date, String format) throws ParseException
{
    SimpleDateFormat formatter = new SimpleDateFormat(format);
    return formatter.parse(date);
}

Usage:

Date date = parseDate("19/05/2009", "dd/MM/yyyy");

For efficiency, you would want to store your formatters in a hashmap. The hashmap is a static member of your util class.

private static Map<String, SimpleDateFormat> hashFormatters = new HashMap<String, SimpleDateFormat>();

public static Date parseDate(String date, String format) throws ParseException
{
    SimpleDateFormat formatter = hashFormatters.get(format);

    if (formatter == null)
    {
        formatter = new SimpleDateFormat(format);
        hashFormatters.put(format, formatter);
    }

    return formatter.parse(date);
}

The problem is that you don't have a route for /. Change your definition to this:

ShopMyShopBundle_homepage:
    pattern:  /
    defaults: { _controller: ShopMyShopBundle:Main:index }
    requirements:
        _method:  GET

The version I'm using I think is the good one, since is the exact same as the Android Developer Docs, except for the name of the string, they used "view" and I used "webview", for the rest is the same

No, it is not.

The one that is new to the N Developer Preview has this method signature:

public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request)

The one that is supported by all Android versions, including N, has this method signature:

public boolean shouldOverrideUrlLoading(WebView view, String url)

So why should I do to make it work on all versions?

Override the deprecated one, the one that takes a String as the second parameter.

I was trying to solve the same problem, but found an interesting advice by Basarat Ali Syed, of TypeScript Deep Dive fame, that we should avoid the generic export default declaration for a class, and instead append the export tag to the class declaration. The imported class should be instead listed in the import command of the module.

That is: instead of

class Foo {
    // ...
}
export default Foo;

and the simple import Foo from './foo'; in the module that will import, one should use

export class Foo {
    // ...
}

and import {Foo} from './foo' in the importer.

The reason for that is difficulties in the refactoring of classes, and the added work for exportation. The original post by Basarat is in export default can lead to problems

You can select every column from that sub-query by aliasing it and adding the alias before the *:

SELECT t.*, a+b AS total_sum
FROM
(
   SELECT SUM(column1) AS a, SUM(column2) AS b
   FROM table
) t

I would use a duplex stream instead. like documented here nodejs doc duplex streams

A Transform stream is a Duplex stream where the output is computed in some way from the input.

So you want to fire Ajax calls to the servlet? For that you need the XMLHttpRequest object in JavaScript. Here's a Firefox compatible example:

<script>
    var xhr = new XMLHttpRequest();
    xhr.onreadystatechange = function() {
        if (xhr.readyState == 4) {
            var data = xhr.responseText;
            alert(data);
        }
    }
    xhr.open('GET', '${pageContext.request.contextPath}/myservlet', true);
    xhr.send(null);
</script>

This is however very verbose and not really crossbrowser compatible. For the best crossbrowser compatible way of firing ajaxical requests and traversing the HTML DOM tree, I recommend to grab jQuery. Here's a rewrite of the above in jQuery:

<script src="http://code.jquery.com/jquery-latest.min.js"></script>
<script>
    $.get('${pageContext.request.contextPath}/myservlet', function(data) {
        alert(data);
    });
</script>

Either way, the Servlet on the server should be mapped on an url-pattern of /myservlet (you can change this to your taste) and have at least doGet() implemented and write the data to the response as follows:

String data = "Hello World!";
response.setContentType("text/plain");
response.setCharacterEncoding("UTF-8");
response.getWriter().write(data);

This should show Hello World! in the JavaScript alert.

You can of course also use doPost(), but then you should use 'POST' in xhr.open() or use $.post() instead of $.get() in jQuery.

Then, to show the data in the HTML page, you need to manipulate the HTML DOM. For example, you have a

<div id="data"></div>

in the HTML where you'd like to display the response data, then you can do so instead of alert(data) of the 1st example:

document.getElementById("data").firstChild.nodeValue = data;

In the jQuery example you could do this in a more concise and nice way:

$('#data').text(data);

To go some steps further, you'd like to have an easy accessible data format to transfer more complex data. Common formats are XML and JSON. For more elaborate examples on them, head to How to use Servlets and Ajax?

Every time you call the jQuery() function, a new object is created and returned. So even equality checks on the same selectors will fail.

<div id="a">test</div>

$('#a') == $('#a') // false

The resulting jQuery object contains an array of matching elements, which are basically native DOM objects like HTMLDivElement that always refer to the same object, so you should check those for equality using the array index as Darin suggested.

$('#a')[0] == $('#a')[0] // true

I tried a lot of these suggestions but noting seemed to work. I've wasted quite a few hours only to found out that this was my mistake:

@Scripts.Render("/bundles/foundation")

It always have me minified and bundled javascript, no matter what I tried. Instead, I should have used this:

@Scripts.Render("~/bundles/foundation")

The extra '~' did it. I've even removed it again in only one instance to see if that was really it. It was... hopefully I can save at least one person the hours I wasted on this.

I'm not 100% sure but when you cast f to an int, and subtract it from f, I believe it is getting cast back to a float. This probably won't matter in this case, but it could present problems down the line if you are expecting that to be an int for some reason.

I don't know if it's a better solution per se, but you could use modulus math instead, for example: float f = 4.5886; bool isInt; isInt = (f % 1.0 != 0) ? false : true; depending on your compiler you may or not need the .0 after the 1, again the whole implicit casts thing comes into play. In this code, the bool isInt should be true if the right of the decimal point is all zeroes, and false otherwise.

Use an array, not an object literal, if order matters.

list = ['apple', 'banana', 'carrot'];

Or something like

dict = {
 'a' : ['apple', 'awesome'],
 'b' : ['best friend']
};

Or even..

dict = [{letter:'a', list:['apple', 'awesome']},{letter:'b', list:['best friend']}];

The keys for dict are not guaranteed at all to be in order.

Well, what is the data source? Your action could take a few defaulted arguments, i.e.

ActionResult Search(string query, int startIndex, int pageSize) {...}

defaulted in the routes setup so that startIndex is 0 and pageSize is (say) 20:

        routes.MapRoute("Search", "Search/{query}/{startIndex}",
                        new
                        {
                            controller = "Home", action = "Search",
                            startIndex = 0, pageSize = 20
                        });

To split the feed, you can use LINQ quite easily:

var page = source.Skip(startIndex).Take(pageSize);

(or do a multiplication if you use "pageNumber" rather than "startIndex")

With LINQ-toSQL, EF, etc - this should "compose" down to the database, too.

You should then be able to use action-links to the next page (etc):

<%=Html.ActionLink("next page", "Search", new {
                query, startIndex = startIndex + pageSize, pageSize }) %>

Just want to add some description over @Jackpap answer:

automaticallyImplyLeading:

This checks whether we want to apply the back widget(leading widget) over the app bar or not. If the automaticallyImplyLeading is false then automatically space is given to the title and if If the leading widget is true, then this parameter has no effect.

void main() {
  runApp(
    new MaterialApp(
      home: new Scaffold(
        appBar: AppBar(
          automaticallyImplyLeading: false, // Used for removing back buttoon. 
          title: new Center(
            child: new Text("Demo App"),
          ),
        ),
        body: new Container(
          child: new Center(
            child: Text("Hello world!"),
          ),
        ),
      ),
    ),
  );
}  

For people using @akashivskyy's answer to instantiate UIViewController and are having the exception:

fatal error: use of unimplemented initializer 'init(coder:)' for class

Quick tip:

Manually implement required init?(coder aDecoder: NSCoder) at your destination UIViewController that you are trying to instantiate

required init?(coder aDecoder: NSCoder) {
    super.init(coder: aDecoder)
}

If you need more description please refer to my answer here

The function () use () {} is like closure for PHP.

Without use, function cannot access parent scope variable

$s = "hello";
$f = function () {
    echo $s;
};

$f(); // Notice: Undefined variable: s

$s = "hello";
$f = function () use ($s) {
    echo $s;
};

$f(); // hello

The use variable's value is from when the function is defined, not when called

$s = "hello";
$f = function () use ($s) {
    echo $s;
};

$s = "how are you?";
$f(); // hello

use variable by-reference with &

$s = "hello";
$f = function () use (&$s) {
    echo $s;
};

$s = "how are you?";
$f(); // how are you?

This worked for me on my MAC - 2020

Go to directory containing adb:

cd ~/Library/Android/sdk/platform-tools/

Run adb command to list all services

./adb shell dumpsys activity services

This should work:

s=json.dumps(variables)
variables2=json.loads(s)
assert(variables==variables2)

You can also use the tag, this works in divs and everything else:

<center><form></form></center>

This link will help you with the tag:

Why is the <center> tag deprecated in HTML?

You control how a row or column aligns its children using the mainAxisAlignment and crossAxisAlignment properties. For a row, the main axis runs horizontally and the cross axis runs vertically. For a column, the main axis runs vertically and the cross axis runs horizontally.

 mainAxisAlignment: MainAxisAlignment.center,
 crossAxisAlignment: CrossAxisAlignment.center,

You can write a pretty simple embedded Jetty Java server.

Embedded Jetty means that the server (Jetty) shipped together with the application as opposed of deploying the application on external Jetty server.

So if in non-embedded approach your webapp built into WAR file which deployed to some external server (Tomcat / Jetty / etc), in embedded Jetty, you write the webapp and instantiate the jetty server in the same code base.

An example for embedded Jetty Java server you can git clone and use: https://github.com/stas-slu/embedded-jetty-java-server-example

I just modified hhafez's test to include StringBuilder. StringBuilder is 33 times faster than String.format using jdk 1.6.0_10 client on XP. Using the -server switch lowers the factor to 20.

public class StringTest {

   public static void main( String[] args ) {
      test();
      test();
   }

   private static void test() {
      int i = 0;
      long prev_time = System.currentTimeMillis();
      long time;

      for ( i = 0; i < 1000000; i++ ) {
         String s = "Blah" + i + "Blah";
      }
      time = System.currentTimeMillis() - prev_time;

      System.out.println("Time after for loop " + time);

      prev_time = System.currentTimeMillis();
      for ( i = 0; i < 1000000; i++ ) {
         String s = String.format("Blah %d Blah", i);
      }
      time = System.currentTimeMillis() - prev_time;
      System.out.println("Time after for loop " + time);

      prev_time = System.currentTimeMillis();
      for ( i = 0; i < 1000000; i++ ) {
         new StringBuilder("Blah").append(i).append("Blah");
      }
      time = System.currentTimeMillis() - prev_time;
      System.out.println("Time after for loop " + time);
   }
}

While this might sound drastic, I consider it to be relevant only in rare cases, because the absolute numbers are pretty low: 4 s for 1 million simple String.format calls is sort of ok - as long as I use them for logging or the like.

Update: As pointed out by sjbotha in the comments, the StringBuilder test is invalid, since it is missing a final .toString().

The correct speed-up factor from String.format(.) to StringBuilder is 23 on my machine (16 with the -server switch).

git diff --shortstat

gives you just the number of lines changed and added. This only works with unstaged changes. To compare against a branch:

git diff --shortstat some-branch

You use the id property to the get the id, then the substr method to remove the first part of it, then optionally parseInt to turn it into a number:

var id = theElement.id.substr(5);

or:

var id = parseInt(theElement.id.substr(5));

$(this).find("select").each(function () {
    $(this).find('option:selected').text();
});

Dim regDate As Date = Date.Now.date

This should fix your problem, though it's 2 years old!

df.insert(0, 'New_ID', range(880, 880 + len(df)))
df

Save yourself some troubleshooting time and log your require call, like so:

console.log(require('dotenv').config())

You should see an error with more detailed info on the problem.

I think you want $data[$category] = $question;

Or in case you want an array that maps categories to array of questions:

$data = array();
foreach($file_data as $value) {
    list($category, $question) = explode('|', $value, 2);

    if(!isset($data[$category])) {
        $data[$category] = array();
    }
    $data[$category][] = $question;
}
print_r($data);

The normalize function from the BBMisc package was the right tool for me since it can deal with NA values.

Here is how to use it:

Given the following dataset,

    ASR_API     <- c("CV",  "F",    "IER",  "LS-c", "LS-o")
    Human       <- c(NA,    5.8,    12.7,   NA, NA)
    Google      <- c(23.2,  24.2,   16.6,   12.1,   28.8)
    GoogleCloud <- c(23.3,  26.3,   18.3,   12.3,   27.3)
    IBM     <- c(21.8,  47.6,   24.0,   9.8,    25.3)
    Microsoft   <- c(29.1,  28.1,   23.1,   18.8,   35.9)
    Speechmatics    <- c(19.1,  38.4,   21.4,   7.3,    19.4)
    Wit_ai      <- c(35.6,  54.2,   37.4,   19.2,   41.7)
    dt     <- data.table(ASR_API,Human, Google, GoogleCloud, IBM, Microsoft, Speechmatics, Wit_ai)
> dt
   ASR_API Human Google GoogleCloud  IBM Microsoft Speechmatics Wit_ai
1:      CV    NA   23.2        23.3 21.8      29.1         19.1   35.6
2:       F   5.8   24.2        26.3 47.6      28.1         38.4   54.2
3:     IER  12.7   16.6        18.3 24.0      23.1         21.4   37.4
4:    LS-c    NA   12.1        12.3  9.8      18.8          7.3   19.2
5:    LS-o    NA   28.8        27.3 25.3      35.9         19.4   41.7

normalized values can be obtained like this:

> dtn <- normalize(dt, method = "standardize", range = c(0, 1), margin = 1L, on.constant = "quiet")
> dtn
   ASR_API      Human     Google GoogleCloud         IBM  Microsoft Speechmatics      Wit_ai
1:      CV         NA  0.3361245   0.2893457 -0.28468670  0.3247336  -0.18127203 -0.16032655
2:       F -0.7071068  0.4875320   0.7715885  1.59862532  0.1700986   1.55068347  1.31594762
3:     IER  0.7071068 -0.6631646  -0.5143923 -0.12409420 -0.6030768   0.02512682 -0.01746131
4:    LS-c         NA -1.3444981  -1.4788780 -1.16064578 -1.2680075  -1.24018782 -1.46198764
5:    LS-o         NA  1.1840062   0.9323361 -0.02919864  1.3762521  -0.15435044  0.32382788

where hand calculated method just ignores colmuns containing NAs:

> dt %>% mutate(normalizedHuman = (Human - mean(Human))/sd(Human)) %>% 
+ mutate(normalizedGoogle = (Google - mean(Google))/sd(Google)) %>% 
+ mutate(normalizedGoogleCloud = (GoogleCloud - mean(GoogleCloud))/sd(GoogleCloud)) %>% 
+ mutate(normalizedIBM = (IBM - mean(IBM))/sd(IBM)) %>% 
+ mutate(normalizedMicrosoft = (Microsoft - mean(Microsoft))/sd(Microsoft)) %>% 
+ mutate(normalizedSpeechmatics = (Speechmatics - mean(Speechmatics))/sd(Speechmatics)) %>% 
+ mutate(normalizedWit_ai = (Wit_ai - mean(Wit_ai))/sd(Wit_ai))
  ASR_API Human Google GoogleCloud  IBM Microsoft Speechmatics Wit_ai normalizedHuman normalizedGoogle
1      CV    NA   23.2        23.3 21.8      29.1         19.1   35.6              NA        0.3361245
2       F   5.8   24.2        26.3 47.6      28.1         38.4   54.2              NA        0.4875320
3     IER  12.7   16.6        18.3 24.0      23.1         21.4   37.4              NA       -0.6631646
4    LS-c    NA   12.1        12.3  9.8      18.8          7.3   19.2              NA       -1.3444981
5    LS-o    NA   28.8        27.3 25.3      35.9         19.4   41.7              NA        1.1840062
  normalizedGoogleCloud normalizedIBM normalizedMicrosoft normalizedSpeechmatics normalizedWit_ai
1             0.2893457   -0.28468670           0.3247336            -0.18127203      -0.16032655
2             0.7715885    1.59862532           0.1700986             1.55068347       1.31594762
3            -0.5143923   -0.12409420          -0.6030768             0.02512682      -0.01746131
4            -1.4788780   -1.16064578          -1.2680075            -1.24018782      -1.46198764
5             0.9323361   -0.02919864           1.3762521            -0.15435044       0.32382788

(normalizedHuman is made a list of NAs ...)

regarding the selection of specific columns for calculation, a generic method can be employed like this one:

data_vars <- df_full %>% dplyr::select(-ASR_API,-otherVarNotToBeUsed)
meta_vars <- df_full %>% dplyr::select(ASR_API,otherVarNotToBeUsed)
data_varsn <- normalize(data_vars, method = "standardize", range = c(0, 1), margin = 1L, on.constant = "quiet")
dtn <- cbind(meta_vars,data_varsn)

Bootstrap 3.2 update: (current release)

Current stable Bootstrap version is 3.2.0.
With version 3.2 visible-print deprecated, so you should use like this:

Class                        Browser    Print
 -------------------------------------------------
.visible-print-block         Hidden        Visible (as block)
.visible-print-inline        Hidden        Visible (as inline)
.visible-print-inline-block  Hidden        Visible (as inline-block)
.hidden-print                Visible       Hidden

Bootstrap 3 update:

Print classes are now in documents: http://getbootstrap.com/css/#responsive-utilities-print

Similar to the regular responsive classes,
       use these for toggling content for print.

Class            Browser    Print
 ----------------------------------------
.visible-print   Hidden     Visible
.hidden-print    Visible    Hidden

Bootstrap 2.3.1 version:

After adding bootstrap.css file into your HTML,
Find the parts that you don't want to print and add hidden-print class into tags. Because css file includes this:

@media print {
  .visible-print  { display: inherit !important; }
  .hidden-print   { display: none !important; }
}

Yes, it is called Short-circuit Evaluation.

If the validity of the boolean statement can be assured after part of the statement, the rest is not evaluated.

This is very important when some of the statements have side-effects.

\ is an escape character in Python. \t gets interpreted as a tab. If you need \ character in a string, you have to use \\.

Your code should be:
test_file=open('c:\\Python27\\test.txt','r')

Update 2 (28 September 2020): This language is constantly evolving, and so if you can use Partial (introduced in v2.1) then this is now my preferred way to achieve this.

class Box {
   x: number;
   y: number;
   height: number;
   width: number;

   public constructor(b: Partial<Box> = {}) {
      Object.assign(this, b);
   }
}

// Example use
const a = new Box();
const b = new Box({x: 10, height: 99});
const c = new Box({foo: 10});          // Will fail to compile

Update (8 June 2017): guyarad and snolflake make valid points in their comments below to my answer. I would recommend readers look at the answers by Benson, Joe and snolflake who have better answers than mine.*

Original Answer (27 January 2014)

Another example of how to achieve constructor overloading:

class DateHour {

  private date: Date;
  private relativeHour: number;

  constructor(year: number, month: number, day: number, relativeHour: number);
  constructor(date: Date, relativeHour: number);
  constructor(dateOrYear: any, monthOrRelativeHour: number, day?: number, relativeHour?: number) {
    if (typeof dateOrYear === "number") {
      this.date = new Date(dateOrYear, monthOrRelativeHour, day);
      this.relativeHour = relativeHour;
    } else {
      var date = <Date> dateOrYear;
      this.date = new Date(date.getFullYear(), date.getMonth(), date.getDate());
      this.relativeHour = monthOrRelativeHour;
    }
  }
}

Source: http://mimosite.com/blog/post/2013/04/08/Overloading-in-TypeScript

Use the @Input() decorator in your child component to allow the parent to bind to this input.

In the child component you declare it as is :

@Input() myInputName: myType

To bind a property from parent to a child you must add in you template the binding brackets and the name of your input between them.

Example :

<my-child-component [myChildInputName]="myParentVar"></my-child-component>

But beware, objects are passed as a reference, so if the object is updated in the child the parent's var will be too updated. This might lead to some unwanted behaviour sometime. With primary types the value is copied.

To go further read this :

Docs : https://angular.io/docs/ts/latest/cookbook/component-communication.html

Despite this being against the general SO policy on these matters, this seems to be what the OP genuinely wants:

http://www.google.com/search?btnG=1&pws=0&q=java+executable+wrapper

If you'd like, you could also try creating the appropriate batch or script file containing the single line:

java -jar MyJar.jar

Or in many cases on windows just double clicking the executable jar.

Just few more details:

• Add mysql field

`image` blob

• Get data from image

$image = addslashes(file_get_contents($_FILES['image']['tmp_name']));

• Insert image data into db

$sql = "INSERT INTO `product_images` (`id`, `image`) VALUES ('1', '{$image}')";

• Show image to the web

<img src="data:image/png;base64,'.base64_encode($row['image']).'">

• End

This is because pushd is a builtin function in bash. So it is not related to the PATH variable and also it is not supported by /bin/sh (which is used by default by make. You can change that by setting SHELL (although it will not work directly (test1)).

You can instead run all the commands through bash -c "...". That will make the commands, including pushd/popd, run in a bash environment (test2).

SHELL = /bin/bash

test1:
        @echo before
        @pwd
        @pushd /tmp
        @echo in /tmp
        @pwd
        @popd
        @echo after
        @pwd

test2:
        @/bin/bash -c "echo before;\
        pwd; \
        pushd /tmp; \
        echo in /tmp; \
        pwd; \
        popd; \
        echo after; \
        pwd;"

When running make test1 and make test2 it gives the following:

prompt>make test1
before
/download/2011/03_mar
make: pushd: Command not found
make: *** [test1] Error 127
prompt>make test2
before
/download/2011/03_mar
/tmp /download/2011/03_mar
in /tmp
/tmp
/download/2011/03_mar
after
/download/2011/03_mar
prompt>

For test1, even though bash is used as a shell, each command/line in the rule is run by itself, so the pushd command is run in a different shell than the popd.

You only need ng-model when you need to access the model's $viewValue or $modelValue. See NgModelController. And in that case, you would use require: '^ngModel'.

For the rest, see Roys answer.

In my case, this causes error:

return response->json(["message" => "Model status successfully updated!", "data" => $model], 200);

but this not:

return response->json(["message" => "Model status successfully updated!", "data" => $model->toJson()], 200);

This was tested on Windows XP SP3 and Windows 7 and uses CScript. I put in some safe guards to avoid del "" prompting. (/q would be dangerous)

Wait one second:

sleepOrDelayExecution 1000

Wait 500 ms and then run stuff after:

sleepOrDelayExecution 500 dir \ /s

sleepOrDelayExecution.bat:

@echo off
if "%1" == "" goto end
if NOT %1 GTR 0 goto end
setlocal
set sleepfn="%temp%\sleep%random%.vbs"
echo WScript.Sleep(%1) >%sleepfn%
if NOT %sleepfn% == "" if NOT EXIST %sleepfn% goto end
cscript %sleepfn% >nul
if NOT %sleepfn% == "" if EXIST %sleepfn% del %sleepfn%
for /f "usebackq tokens=1*" %%i in (`echo %*`) DO @ set params=%%j
%params%
:end

Try this code it work fine

assign the post variable to the variable

   $username = $_POST['uname'];

   $password = $_POST['pass'];

  $result = mysql_query('SELECT * FROM userData WHERE UserName LIKE $username');

if(!empty($result)){

    while($row = mysql_fetch_array($result)){
        echo $row['FirstName'];
     }
}

Is that your private IP address? If so you'll need to use your public one. Go to ipchicken to find out what it is. I know you are in the same LAN, but try this to see if it resolves any issues.

Here's a solution that doesn't use negative margins or calc. Run the snippet below to see the final result.

Explanation

We give the header and the footer a fixed height of 30px and position them absolutely at the top and bottom, respectively. To prevent the content from falling underneath, we use two classes: below-header and above-footer to pad the div above and below with 30px.

All of the content is wrapped in a position: relative div so that the header and footer are at the top/bottom of the content and not the window.

We use the classes fit-to-parent and min-fit-to-parent to make the content fill out the page. This gives us a sticky footer which is at least as low as the window, but hidden if the content is longer than the window.

Inside the header and footer, we use the display: table and display: table-cell styles to give the header and footer some vertical padding without disrupting the shrink-wrap quality of the page. (Giving them real padding can cause the total height of the page to be more than 100%, which causes a scroll bar to appear when it isn't really needed.)

.fit-parent {_x000D_
    height: 100%;_x000D_
    margin: 0;_x000D_
    padding: 0;_x000D_
}_x000D_
.min-fit-parent {_x000D_
    min-height: 100%;_x000D_
    margin: 0;_x000D_
    padding: 0;_x000D_
}_x000D_
.below-header {_x000D_
    padding-top: 30px;_x000D_
}_x000D_
.above-footer {_x000D_
    padding-bottom: 30px;_x000D_
}_x000D_
.header {_x000D_
    position: absolute;_x000D_
    top: 0;_x000D_
    height: 30px;_x000D_
    width: 100%;_x000D_
}_x000D_
.footer {_x000D_
    position: absolute;_x000D_
    bottom: 0;_x000D_
    height: 30px;_x000D_
    width: 100%;_x000D_
}_x000D_
_x000D_
/* helper classes */_x000D_
_x000D_
.padding-lr-small {_x000D_
    padding: 0 5px;_x000D_
}_x000D_
.relative {_x000D_
    position: relative;_x000D_
}_x000D_
.auto-scroll {_x000D_
  overflow: auto;_x000D_
}_x000D_
/* these two classes work together to create vertical centering */_x000D_
.valign-outer {_x000D_
    display: table;_x000D_
}_x000D_
.valign-inner {_x000D_
    display: table-cell;_x000D_
    vertical-align: middle;_x000D_
}

<html class='fit-parent'>_x000D_
  <body class='fit-parent'>_x000D_
<div class='min-fit-parent auto-scroll relative' style='background-color: lightblue'>_x000D_
<div class='header valign-outer' style='background-color: black; color: white;'>_x000D_
        <div class='valign-inner padding-lr-small'>_x000D_
            My webpage_x000D_
        </div>_x000D_
    </div>_x000D_
    <div class='fit-parent above-footer below-header'>_x000D_
        <div class='fit-parent' id='main-inner'>_x000D_
          Lorem ipsum doloris finding dory Lorem ipsum doloris finding_x000D_
          dory Lorem ipsum doloris finding dory Lorem ipsum doloris_x000D_
          finding dory Lorem ipsum doloris finding dory Lorem ipsum_x000D_
          doloris finding dory Lorem ipsum doloris finding dory Lorem_x000D_
          ipsum doloris finding dory Lorem ipsum doloris finding dory_x000D_
          Lorem ipsum doloris finding dory Lorem ipsum doloris finding_x000D_
          dory Lorem ipsum doloris finding dory Lorem ipsum doloris_x000D_
          finding dory Lorem ipsum doloris finding dory Lorem ipsum_x000D_
          doloris finding dory Lorem ipsum doloris finding dory Lorem_x000D_
          ipsum doloris finding dory Lorem ipsum doloris finding dory_x000D_
          Lorem ipsum doloris finding dory Lorem ipsum doloris finding_x000D_
          dory Lorem ipsum doloris finding dory Lorem ipsum doloris_x000D_
          finding dory Lorem ipsum doloris finding dory Lorem ipsum_x000D_
          doloris finding dory Lorem ipsum doloris finding dory Lorem_x000D_
          ipsum doloris finding dory Lorem ipsum doloris finding dory_x000D_
          Lorem ipsum doloris finding dory Lorem ipsum doloris finding_x000D_
          dory Lorem ipsum doloris finding dory Lorem ipsum doloris_x000D_
          finding dory Lorem ipsum doloris finding dory Lorem ipsum_x000D_
          doloris finding dory Lorem ipsum doloris finding dory Lorem_x000D_
          ipsum doloris finding dory Lorem ipsum doloris finding dory_x000D_
          Lorem ipsum doloris finding dory Lorem ipsum doloris finding_x000D_
          dory Lorem ipsum doloris finding dory Lorem ipsum doloris_x000D_
          finding dory Lorem ipsum doloris finding dory Lorem ipsum_x000D_
          doloris finding dory Lorem ipsum doloris finding dory Lorem_x000D_
          ipsum doloris finding dory Lorem ipsum doloris finding dory_x000D_
          Lorem ipsum doloris finding dory Lorem ipsum doloris finding_x000D_
          dory Lorem ipsum doloris finding dory Lorem ipsum doloris_x000D_
          finding dory Lorem ipsum doloris finding dory Lorem ipsum_x000D_
          doloris finding dory Lorem ipsum doloris finding dory Lorem_x000D_
          ipsum doloris finding dory Lorem ipsum doloris finding dory_x000D_
          Lorem ipsum doloris finding dory Lorem ipsum doloris finding_x000D_
          dory Lorem ipsum doloris finding dory Lorem ipsum doloris_x000D_
          finding dory Lorem ipsum doloris finding dory Lorem ipsum_x000D_
          doloris finding dory Lorem ipsum doloris finding dory Lorem_x000D_
          ipsum doloris finding dory Lorem ipsum doloris finding dory_x000D_
        </div>_x000D_
    </div>_x000D_
    <div class='footer valign-outer' style='background-color: white'>_x000D_
        <div class='valign-inner padding-lr-small'>_x000D_
            &copy; 2005 Old Web Design_x000D_
        </div>_x000D_
    </div>_x000D_
</div>_x000D_
    </body>_x000D_
  </html>

After finding answers around, I think this page might be helpful. https://www.typescriptlang.org/docs/handbook/declaration-merging.html#global-augmentation Not sure about the history of declaration merging, but it explains why the following could work.

declare global {
    interface Window { MyNamespace: any; }
}

window.MyNamespace = window.MyNamespace || {};

The problem was the box "open new connection" that was checked. So I couldn't use my temporary table.

ES6

const [first] = Object.keys(obj)

A better way: custom template filter: https://docs.djangoproject.com/en/dev/howto/custom-template-tags/

such as get my_list[x] in templates:

in template

{% load index %}
{{ my_list|index:x }}

templatetags/index.py

from django import template
register = template.Library()

@register.filter
def index(indexable, i):
    return indexable[i]

if my_list = [['a','b','c'], ['d','e','f']], you can use {{ my_list|index:x|index:y }} in template to get my_list[x][y]

It works fine with "for"

{{ my_list|index:forloop.counter0 }}

Tested and works well ^_^

If the project is maven placed it in src/main/resources, in the package phase it will copy it in ../WEB-INF/classes/hibernate.cfg.xml

My two cents:

from itertools import repeat 

list(repeat(f(), x))  # for pure f
[f() for f in repeat(f, x)]  # for impure f

There is no difference.

COUNT(1) is basically just counting a constant value 1 column for each row. As other users here have said, it's the same as COUNT(0) or COUNT(42). Any non-NULL value will suffice.

http://asktom.oracle.com/pls/asktom/f?p=100:11:2603224624843292::::P11_QUESTION_ID:1156151916789

The Oracle optimizer did apparently use to have bugs in it, which caused the count to be affected by which column you picked and whether it was in an index, so the COUNT(1) convention came into being.

It's advisable to qualify the styling of the <li> so it does not affect <ol> list items. So:

ul {
    list-style: none;
    margin-left: 0;
    padding-left: 0;
}

ul li {
    padding-left: 1em;
    text-indent: -1em;
}

ul li:before {
    content: "+";
    padding-right: 5px;
}

I think you need the btn class.
It would be like this:

<a class="btn disabled" href="#">Disabled link</a>

RTSP (actually RTP) can be used for streaming video, but also many other types of media including live presentations. Rtsp is just the protocol used to setup the RTP session.

For all the details you can check out my open source RTSP Server implementation on the following address: https://net7mma.codeplex.com/

Or my article @ http://www.codeproject.com/Articles/507218/Managed-Media-Aggregation-using-Rtsp-and-Rtp

It supports re-sourcing streams as well as the dynamic creation of streams, various RFC's are implemented and the library achieves better performance and less memory then FFMPEG and just about any other solutions in the transport layer and thus makes it a good candidate to use as a centralized point of access for most scenarios.

I'm pretty sure you can't simply add on delete cascade to an existing foreign key constraint. You have to drop the constraint first, then add the correct version. In standard SQL, I believe the easiest way to do this is to

• start a transaction,
• drop the foreign key,
• add a foreign key with on delete cascade, and finally
• commit the transaction

Repeat for each foreign key you want to change.

But PostgreSQL has a non-standard extension that lets you use multiple constraint clauses in a single SQL statement. For example

alter table public.scores
drop constraint scores_gid_fkey,
add constraint scores_gid_fkey
   foreign key (gid)
   references games(gid)
   on delete cascade;

If you don't know the name of the foreign key constraint you want to drop, you can either look it up in pgAdminIII (just click the table name and look at the DDL, or expand the hierarchy until you see "Constraints"), or you can query the information schema.

select *
from information_schema.key_column_usage
where position_in_unique_constraint is not null

the issue happened with me, I resolved by removing the scope tag only and built successfully.

Normaly you can GET and POST parameters in a servlet the same way:

request.getParameter("cmd");

But only if the POST data is encoded as key-value pairs of content type: "application/x-www-form-urlencoded" like when you use a standard HTML form.

If you use a different encoding schema for your post data, as in your case when you post a json data stream, you need to use a custom decoder that can process the raw datastream from:

BufferedReader reader = request.getReader();

Json post processing example (uses org.json package )

public void doPost(HttpServletRequest request, HttpServletResponse response)
  throws ServletException, IOException {

  StringBuffer jb = new StringBuffer();
  String line = null;
  try {
    BufferedReader reader = request.getReader();
    while ((line = reader.readLine()) != null)
      jb.append(line);
  } catch (Exception e) { /*report an error*/ }

  try {
    JSONObject jsonObject =  HTTP.toJSONObject(jb.toString());
  } catch (JSONException e) {
    // crash and burn
    throw new IOException("Error parsing JSON request string");
  }

  // Work with the data using methods like...
  // int someInt = jsonObject.getInt("intParamName");
  // String someString = jsonObject.getString("stringParamName");
  // JSONObject nestedObj = jsonObject.getJSONObject("nestedObjName");
  // JSONArray arr = jsonObject.getJSONArray("arrayParamName");
  // etc...
}

Oddly enough I found that if you parse from a string it works.

 int i = 0;
 Long l = Long.parseLong(String.valueOf(i));
 int back = Integer.parseInt(String.valueOf(l));

Win.

Have a look at: Greybox

It's an awesome version of lightbox that supports forms, external web pages as well as the traditional images and slideshows. It works perfectly from a link on a webpage.

You will find many information on how to use Greybox and also some great examples. Cheers Kara

In Windows-Pycharm: If File Location|Path contains any string like \t then need to escape that with additional \ like \\t

You update core-js with the following command:

npm install --save core-js@^3

If you read the React Docs you will find that the command is derived from when you need to upgrade React itself.

The solucion that work for me is the following

$filter('filter')(data, {'id':10}) 

This worked for me:

list.stream().distinct().collect(Collectors.toList());

You need to implement equals, of course

Try this function, which also displays variable names for the correlation matrix:

def plot_corr(df,size=10):
    '''Function plots a graphical correlation matrix for each pair of columns in the dataframe.

    Input:
        df: pandas DataFrame
        size: vertical and horizontal size of the plot'''

    corr = df.corr()
    fig, ax = plt.subplots(figsize=(size, size))
    ax.matshow(corr)
    plt.xticks(range(len(corr.columns)), corr.columns);
    plt.yticks(range(len(corr.columns)), corr.columns);

I solved it by changing "classpath" in "dependencies" in build.gradles.

Just change:

dependencies {
    classpath 'com.android.tools.build:gradle:2.3.0-alpha2'

or something like that to:

dependencies {
    classpath 'com.android.tools.build:gradle:2.2.3'

I have a similar scenario, and had no problem connecting after setting the JNLP port as you describe, and adding a single firewall rule allowing a connection on the server using that port. Granted it is a randomly selected client port going to a known server port (a host:ANY -> server:1 rule is needed).

From my reading of the source code, I don't see a way to set the local port to use when making the request from the slave. It's unfortunate, it would be a nice feature to have.

Alternatives:

Use a simple proxy on your client that listens on port N and then does forward all data to the actual Jenkins server on the remote host using a constant local port. Connect your slave to this local proxy instead of the real Jenkins server.

Create a custom Jenkins slave build that allows an option to specify the local port to use.

Remember also if you are using HTTPS via a self-signed certificate, you must alter the configuration jenkins-slave.xml file on the slave to specify the -noCertificateCheck option on the command line.

You should really use .test():

if (!re16digit.test(document.myform.CreditCardNumber.value)) {
  alert("Please ... ");
}

You should also look around for implementations of (one or more of) the card number checksum algorithms. They're very simple.

$("#mydiv").toggle(500,"swing");

more https://api.jquery.com/toggle/

As far as I know it’s usually a placeholder for links that have some JavaScript attached to them. The main point of the link is served by executing the JavaScript code; browsers with JS support then ignore the real link target. If the browser does not support JS, the hash mark essentially turns the link into a no-op. See also unobtrusive JavaScript.

It is useful to know that enums are just like the other classes with Constant fields and a private constructor.

For example,

public enum Weekday
{
  MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY, SUNDAY
} 

The compiler compiles it as follows;

class Weekday extends Enum
{
  public static final Weekday MONDAY  = new Weekday( "MONDAY",   0 );
  public static final Weekday TUESDAY = new Weekday( "TUESDAY ", 1 );
  public static final Weekday WEDNESDAY= new Weekday( "WEDNESDAY", 2 );
  public static final Weekday THURSDAY= new Weekday( "THURSDAY", 3 );
  public static final Weekday FRIDAY= new Weekday( "FRIDAY", 4 );
  public static final Weekday SATURDAY= new Weekday( "SATURDAY", 5 );
  public static final Weekday SUNDAY= new Weekday( "SUNDAY", 6 );

  private Weekday( String s, int i )
  {
    super( s, i );
  }

  // other methods...
}

sed 's/$/\n/' states

Besides redefining console._commandLineAPI, there are some other ways to break into InjectedScriptHost on WebKit browsers, to prevent or alter the evaluation of expressions entered into the developer's console.

Edit:

Chrome has fixed this in a past release. - which must have been before February 2015, as I created the gist at that time

So here's another possibility. This time we hook in, a level above, directly into InjectedScript rather than InjectedScriptHost as opposed to the prior version.

Which is kind of nice, as you can directly monkey patch InjectedScript._evaluateAndWrap instead of having to rely on InjectedScriptHost.evaluate as that gives you more fine-grained control over what should happen.

Another pretty interesting thing is, that we can intercept the internal result when an expression is evaluated and return that to the user instead of the normal behavior.

Here is the code, that does exactly that, return the internal result when a user evaluates something in the console.

var is;
Object.defineProperty(Object.prototype,"_lastResult",{
   get:function(){
       return this._lR;
   },
   set:function(v){
       if (typeof this._commandLineAPIImpl=="object") is=this;
       this._lR=v;
   }
});
setTimeout(function(){
   var ev=is._evaluateAndWrap;
   is._evaluateAndWrap=function(){
       var res=ev.apply(is,arguments);
       console.log();
       if (arguments[2]==="completion") {
           //This is the path you end up when a user types in the console and autocompletion get's evaluated

           //Chrome expects a wrapped result to be returned from evaluateAndWrap.
           //You can use `ev` to generate an object yourself.
           //In case of the autocompletion chrome exptects an wrapped object with the properties that can be autocompleted. e.g.;
           //{iGetAutoCompleted: true}
           //You would then go and return that object wrapped, like
           //return ev.call (is, '', '({test:true})', 'completion', true, false, true);
           //Would make `test` pop up for every autocompletion.
           //Note that syntax as well as every Object.prototype property get's added to that list later,
           //so you won't be able to exclude things like `while` from the autocompletion list,
           //unless you wou'd find a way to rewrite the getCompletions function.
           //
           return res; //Return the autocompletion result. If you want to break that, return nothing or an empty object
       } else {
           //This is the path where you end up when a user actually presses enter to evaluate an expression.
           //In order to return anything as normal evaluation output, you have to return a wrapped object.

           //In this case, we want to return the generated remote object. 
           //Since this is already a wrapped object it would be converted if we directly return it. Hence,
           //`return result` would actually replicate the very normal behaviour as the result is converted.
           //to output what's actually in the remote object, we have to stringify it and `evaluateAndWrap` that object again.`
           //This is quite interesting;
           return ev.call (is, null, '(' + JSON.stringify (res) + ')', "console", true, false, true)
       }
   };
},0);

It's a bit verbose, but I thought I put some comments into it

So normally, if a user, for example, evaluates [1,2,3,4] you'd expect the following output:

After monkeypatching InjectedScript._evaluateAndWrap evaluating the very same expression, gives the following output:

As you see the little-left arrow, indicating output, is still there, but this time we get an object. Where the result of the expression, the array [1,2,3,4] is represented as an object with all its properties described.

I recommend trying to evaluate this and that expression, including those that generate errors. It's quite interesting.

Additionally, take a look at the is - InjectedScriptHost - object. It provides some methods to play with and get a bit of insight into the internals of the inspector.

Of course, you could intercept all that information and still return the original result to the user.

Just replace the return statement in the else path by a console.log (res) following a return res. Then you'd end up with the following.

End of Edit

This is the prior version which was fixed by Google. Hence not a possible way anymore.

One of it is hooking into Function.prototype.call

Chrome evaluates the entered expression by calling its eval function with InjectedScriptHost as thisArg

var result = evalFunction.call(object, expression);

Given this, you can listen for the thisArg of call being evaluate and get a reference to the first argument (InjectedScriptHost)

if (window.URL) {
    var ish, _call = Function.prototype.call;
    Function.prototype.call = function () { //Could be wrapped in a setter for _commandLineAPI, to redefine only when the user started typing.
        if (arguments.length > 0 && this.name === "evaluate" && arguments [0].constructor.name === "InjectedScriptHost") { //If thisArg is the evaluate function and the arg0 is the ISH
            ish = arguments[0];
            ish.evaluate = function (e) { //Redefine the evaluation behaviour
                throw new Error ('Rejected evaluation of: \n\'' + e.split ('\n').slice(1,-1).join ("\n") + '\'');
            };
            Function.prototype.call = _call; //Reset the Function.prototype.call
            return _call.apply(this, arguments);  
        }
    };
}

You could e.g. throw an error, that the evaluation was rejected.

_{Here is an example where the entered expression gets passed to a CoffeeScript compiler before passing it to the evaluate function.}

Here's a clear picture:

Assuming we have branch-A and branch-B

We want to merge branch-B into branch-A

on branch-B -> A: switch to branch-A

on branch-A: git merge branch-B

Does nobody use pointers anymore?

void inplace_rev( char * s ) {
  char t, *e = s + strlen(s);
  while ( --e > s ) { t = *s;*s++=*e;*e=t; }
}

EDIT: Sorry, just noticed the above XOR example...

If you use Less you can directly use the following mixin:

.@{fa-css-prefix}-rotate-90  { .fa-icon-rotate(90deg, 1);  }

Go to Settings -> Style Configurator

Select Theme: Choose whichever you like best (the top two are easiest to read by most people's preference)

You can write your php file to the action attr of form element.
At the php side you can get the form value by $_POST['element_name'].

If you're using .NET 4.0, you could use string.Concat together with Enumerable.Repeat.

int N = 5; // or whatever
Console.WriteLine(string.Concat(Enumerable.Repeat(indent, N)));

Otherwise I'd go with something like Adam's answer.

The reason I generally wouldn't advise using Andrey's answer is simply that the ToArray() call introduces superfluous overhead that is avoided with the StringBuilder approach suggested by Adam. That said, at least it works without requiring .NET 4.0; and it's quick and easy (and isn't going to kill you if efficiency isn't too much of a concern).

It's just a variable name, and it's conventional in python to use _ for throwaway variables. It just indicates that the loop variable isn't actually used.

Try this

$("[id*='type']").click(
function () {
var isCheckboxChecked = this.checked;
$("[id*='type']").attr('checked', false);
this.checked = isCheckboxChecked;
});

To make it even more generic you can also find checkboxes by the common class implemented on them.

Modified...

There are 2 possibilities. In either case PyGame has to be initialized by pygame.init.

import pygame
pygame.init()

Use either the pygame.font module and create a pygame.font.SysFont or pygame.font.Font object. render() a pygame.Surface with the text and blit the Surface to the screen:

my_font = pygame.font.SysFont(None, 50)
text_surface = myfont.render("Hello world!", True, (255, 0, 0))
screen.blit(text_surface, (10, 10))

Or use the pygame.freetype module. Create a pygame.freetype.SysFont() or pygame.freetype.Font object. render() a pygame.Surface with the text or directly render_to() the text to the screen:

my_ft_font = pygame.freetype.SysFont('Times New Roman', 50)
my_ft_font.render_to(screen, (10, 10), "Hello world!", (255, 0, 0))

See also Text and font

Minimal pygame.font example: repl.it/@Rabbid76/PyGame-Text

import pygame

pygame.init()
window = pygame.display.set_mode((500, 150))
clock = pygame.time.Clock()

font = pygame.font.SysFont(None, 100)
text = font.render('Hello World', True, (255, 0, 0))

background = pygame.Surface(window.get_size())
ts, w, h, c1, c2 = 50, *window.get_size(), (128, 128, 128), (64, 64, 64)
tiles = [((x*ts, y*ts, ts, ts), c1 if (x+y) % 2 == 0 else c2) for x in range((w+ts-1)//ts) for y in range((h+ts-1)//ts)]
for rect, color in tiles:
    pygame.draw.rect(background, color, rect)

run = True
while run:
    clock.tick(60)
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            run = False

    window.blit(background, (0, 0))
    window.blit(text, text.get_rect(center = window.get_rect().center))
    pygame.display.flip()

pygame.quit()
exit()

Minimal pygame.freetype example: repl.it/@Rabbid76/PyGame-FreeTypeText

import pygame
import pygame.freetype

pygame.init()
window = pygame.display.set_mode((500, 150))
clock = pygame.time.Clock()

ft_font = pygame.freetype.SysFont('Times New Roman', 80)

background = pygame.Surface(window.get_size())
ts, w, h, c1, c2 = 50, *window.get_size(), (128, 128, 128), (64, 64, 64)
tiles = [((x*ts, y*ts, ts, ts), c1 if (x+y) % 2 == 0 else c2) for x in range((w+ts-1)//ts) for y in range((h+ts-1)//ts)]
for rect, color in tiles:
    pygame.draw.rect(background, color, rect)

run = True
while run:
    clock.tick(60)
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            run = False

    window.blit(background, (0, 0))
    text_rect = ft_font.get_rect('Hello World')
    text_rect.center = window.get_rect().center
    ft_font.render_to(window, text_rect.topleft, 'Hello World', (255, 0, 0))
    pygame.display.flip()

pygame.quit()
exit()

This is my solution:

su root
su postgres
psql

A slightly more efficient version of the bytes2String method is

private static final char[] hex = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
private static String byteArray2Hex(byte[] bytes) {
    StringBuilder sb = new StringBuilder(bytes.length * 2);
    for (final byte b : bytes) {
        sb.append(hex[(b & 0xF0) >> 4]);
        sb.append(hex[b & 0x0F]);
    }
    return sb.toString();
}

It might help you! Please see below steps.

sqlcmd -S server-name -d database-name -i script.sql

• Open cmd.exe as Administrator.
• Create Documents directory.
• Put your SQL Script file(script.sql) in the documents folder.
• Type query with sqlcmd, server-name, database-name and script-file-name as like above highlighted query or below command line screen.

For Linux (I am using Fedora 30) the Shortcut is (Window/Start + Space) Try that and tell me. That works for me

a = 0.000006;
b = 6;
c = a/b;

textbox.Text = c.ToString("0.000000");

As you requested:

textbox.Text = c.ToString("0.######");

This will only display out to the 6th decimal place if there are 6 decimals to display.

You can change the array type without converting like this:

a.dtype = numpy.float32

but first you have to change all the integers to something that will be interpreted as the corresponding float. A very slow way to do this would be to use python's struct module like this:

def toi(i):
    return struct.unpack('i',struct.pack('f',float(i)))[0]

...applied to each member of your array.

But perhaps a faster way would be to utilize numpy's ctypeslib tools (which I am unfamiliar with)

- edit -

Since ctypeslib doesnt seem to work, then I would proceed with the conversion with the typical numpy.astype method, but proceed in block sizes that are within your memory limits:

a[0:10000] = a[0:10000].astype('float32').view('int32')

...then change the dtype when done.

Here is a function that accomplishes the task for any compatible dtypes (only works for dtypes with same-sized items) and handles arbitrarily-shaped arrays with user-control over block size:

import numpy

def astype_inplace(a, dtype, blocksize=10000):
    oldtype = a.dtype
    newtype = numpy.dtype(dtype)
    assert oldtype.itemsize is newtype.itemsize
    for idx in xrange(0, a.size, blocksize):
        a.flat[idx:idx + blocksize] = \
            a.flat[idx:idx + blocksize].astype(newtype).view(oldtype)
    a.dtype = newtype

a = numpy.random.randint(100,size=100).reshape((10,10))
print a
astype_inplace(a, 'float32')
print a

(np.where(np.isnan(A)))[0].shape[0] will be greater than 0 if A contains at least one element of nan, A could be an n x m matrix.

Example:

import numpy as np

A = np.array([1,2,4,np.nan])

if (np.where(np.isnan(A)))[0].shape[0]: 
    print "A contains nan"
else:
    print "A does not contain nan"

Most likely the path you are trying to access does not exist. It seems you are trying to save to a relative location and you do not have an file extension in that string. If you need to use relative paths you can parse the path from ActiveWorkbook.FullName

EDIT: Better syntax would also be

ActiveWorkbook.SaveAs Filename:=myFileName, FileFormat:=xlWorkbookNormal

Grouped Array of Object in typescript with this:

groupBy (list: any[], key: string): Map<string, Array<any>> {
    let map = new Map();
    list.map(val=> {
        if(!map.has(val[key])){
            map.set(val[key],list.filter(data => data[key] == val[key]));
        }
    });
    return map;
});

public class SmsListener extends BroadcastReceiver{

    private SharedPreferences preferences;

    @Override
    public void onReceive(Context context, Intent intent) {
        // TODO Auto-generated method stub

        if(intent.getAction().equals("android.provider.Telephony.SMS_RECEIVED")){
            Bundle bundle = intent.getExtras();           //---get the SMS message passed in---
            SmsMessage[] msgs = null;
            String msg_from;
            if (bundle != null){
                //---retrieve the SMS message received---
                try{
                    Object[] pdus = (Object[]) bundle.get("pdus");
                    msgs = new SmsMessage[pdus.length];
                    for(int i=0; i<msgs.length; i++){
                        msgs[i] = SmsMessage.createFromPdu((byte[])pdus[i]);
                        msg_from = msgs[i].getOriginatingAddress();
                        String msgBody = msgs[i].getMessageBody();
                    }
                }catch(Exception e){
//                            Log.d("Exception caught",e.getMessage());
                }
            }
        }
    }
}

Note: In your manifest file add the BroadcastReceiver-

<receiver android:name=".listener.SmsListener">
    <intent-filter>
        <action android:name="android.provider.Telephony.SMS_RECEIVED" />
    </intent-filter>
</receiver>

Add this permission:

<uses-permission android:name="android.permission.RECEIVE_SMS" />

Don't have access to VisualStudio (I'm on my Mac), but using the information from http://bhaidar.net/cs/archive/2007/08/01/left-outer-join-in-linq-to-sql.aspx it looks like you may be able to do something like this:

var query = from o in dc.Orders
            join v in dc.Vendors on o.VendorId equals v.Id into ov
            from x in ov.DefaultIfEmpty()
            join s in dc.Status on o.StatusId equals s.Id into os
            from y in os.DefaultIfEmpty()
            select new { o.OrderNumber, x.VendorName, y.StatusName }

Try this Method

dataGridView1.DataSource = dt;
dt.Rows.Clear();

select s.id, s.age, c.count
from students s
inner join (
    select age, count(*) as count
    from students
    group by age
) c on s.age = c.age
order by id

Another possibility is too many threads. We just ran into this error message when running a test harness against an app that uses a thread pool. We used

watch -n 5 -d "ps -eL <java_pid> | wc -l"

to watch the ongoing count of Linux native threads running within the given Java process ID. After this hit about 1,000 (for us--YMMV), we started getting the error message you mention.

This is what's killing you:

task.Wait();

That's blocking the UI thread until the task has completed - but the task is an async method which is going to try to get back to the UI thread after it "pauses" and awaits an async result. It can't do that, because you're blocking the UI thread...

There's nothing in your code which really looks like it needs to be on the UI thread anyway, but assuming you really do want it there, you should use:

private async void Button_Click(object sender, RoutedEventArgs 
{
    Task<List<MyObject>> task = GetResponse<MyObject>("my url");
    var items = await task;
    // Presumably use items here
}

Or just:

private async void Button_Click(object sender, RoutedEventArgs 
{
    var items = await GetResponse<MyObject>("my url");
    // Presumably use items here
}

Now instead of blocking until the task has completed, the Button_Click method will return after scheduling a continuation to fire when the task has completed. (That's how async/await works, basically.)

Note that I would also rename GetResponse to GetResponseAsync for clarity.

Using a regex as you described is the simple way (as far as I am aware). If you want a range you could use [^a-f].

To launch facebook page from your app, let urlString = "fb://page/your_fb_page_id"

To launch facebook messenger let urlString = "fb-messenger://user/your_fb_page_id"

FB page id is usually numeric. To get it, goto Find My FB ID input your profile url, something like www.facebook.com/edgedevstudio then click "Find Numberic ID".

Voila, you now have your fb numeric id. replace "your_fb_page_id" with the generated Numeric ID

 val intent = Intent(Intent.ACTION_VIEW, Uri.parse(urlString))
 if (intent.resolveActivity(packageManager) != null) //check if app is available to handle the implicit intent
 startActivity(intent)

select owner, table_name, num_rows, sample_size, last_analyzed from all_tables;

This is the fastest way to retrieve the row counts but there are a few important caveats:

1. NUM_ROWS is only 100% accurate if statistics were gathered in 11g and above with ESTIMATE_PERCENT => DBMS_STATS.AUTO_SAMPLE_SIZE (the default), or in earlier versions with ESTIMATE_PERCENT => 100. See this post for an explanation of how the AUTO_SAMPLE_SIZE algorithm works in 11g.
2. Results were generated as of LAST_ANALYZED, the current results may be different.

use coalesce

COALESCE(value [, ...])

The COALESCE function returns the first of its arguments that is not null.  
Null is returned only if all arguments are null. It is often
used to substitute a default value for null values when data is
retrieved for display.

Edit

Here's an example of COALESCE with your query:

SELECT AVG( price )
FROM(
      SELECT *, cume_dist() OVER ( ORDER BY price DESC ) FROM web_price_scan
      WHERE listing_Type = 'AARM'
        AND u_kbalikepartnumbers_id = 1000307
        AND ( EXTRACT( DAY FROM ( NOW() - dateEnded ) ) ) * 24 < 48
        AND COALESCE( price, 0 ) > ( SELECT AVG( COALESCE( price, 0 ) )* 0.50
                                     FROM ( SELECT *, cume_dist() OVER ( ORDER BY price DESC )
                                           FROM web_price_scan
                                           WHERE listing_Type='AARM'
                                             AND u_kbalikepartnumbers_id = 1000307
                                             AND ( EXTRACT( DAY FROM ( NOW() - dateEnded ) ) ) * 24 < 48
                                         ) g
                                    WHERE cume_dist < 0.50
                                  )
        AND COALESCE( price, 0 ) < ( SELECT AVG( COALESCE( price, 0 ) ) *2
                                     FROM( SELECT *, cume_dist() OVER ( ORDER BY price desc )
                                           FROM web_price_scan
                                           WHERE listing_Type='AARM'
                                             AND u_kbalikepartnumbers_id = 1000307
                                             AND ( EXTRACT( DAY FROM ( NOW() - dateEnded ) ) ) * 24 < 48
                                         ) d
                                     WHERE cume_dist < 0.50)
     )s
HAVING COUNT(*) > 5

IMHO COALESCE should not be use with AVG because it modifies the value. NULL means unknown and nothing else. It's not like using it in SUM. In this example, if we replace AVG by SUM, the result is not distorted. Adding 0 to a sum doesn't hurt anyone but calculating an average with 0 for the unknown values, you don't get the real average.

In that case, I would add price IS NOT NULL in WHERE clause to avoid these unknown values.

function saveAs(uri, filename) {
    var link = document.createElement('a');
    if (typeof link.download === 'string') {
        document.body.appendChild(link); // Firefox requires the link to be in the body
        link.download = filename;
        link.href = uri;
        link.click();
        document.body.removeChild(link); // remove the link when done
    } else {
        location.replace(uri);
    }
}

I have same problem in android os version 4.1.2

add below line to your AndroidManifest.xml below android:label="@string/app_name" in application tag

android:name="android.support.multidex.MultiDexApplication"

This may help some one with same problem.

If you are using an array data source you can do something like below -

$(".select").select2({
    data: data_names
});
data_names.forEach(function(name) {
    if (name.selected) {
        $(".select").select2('val', name.id);
    }
});

This assumes that out of your data set the one item which you want to set as default has an additional attribute called selected and we use that to set the value.

Netbeans 8.0 (beta at the time of this post) has Angular support as well as HTML5 support.

Check out this Oracle article: https://blogs.oracle.com/geertjan/entry/integrated_angularjs_development

This is a small program to get different color on terminal.

#include <stdio.h>

#define KNRM  "\x1B[0m"
#define KRED  "\x1B[31m"
#define KGRN  "\x1B[32m"
#define KYEL  "\x1B[33m"
#define KBLU  "\x1B[34m"
#define KMAG  "\x1B[35m"
#define KCYN  "\x1B[36m"
#define KWHT  "\x1B[37m"

int main()
{
    printf("%sred\n", KRED);
    printf("%sgreen\n", KGRN);
    printf("%syellow\n", KYEL);
    printf("%sblue\n", KBLU);
    printf("%smagenta\n", KMAG);
    printf("%scyan\n", KCYN);
    printf("%swhite\n", KWHT);
    printf("%snormal\n", KNRM);

    return 0;
}

One candidate key is chosen as the primary key. Other candidate keys are called alternate keys.

TypeScript has Map. You can use like:

public myMap = new Map<K,V>([
[k1, v1],
[k2, v2]
]);

myMap.get(key); // returns value
myMap.set(key, value); // import a new data
myMap.has(key); // check data

This library seems to work well: https://code.google.com/p/jsontoken/ .

It depends on Google Guava. Here are the Maven artifacts:

<dependency>
    <groupId>com.googlecode.jsontoken</groupId>
    <artifactId>jsontoken</artifactId>
    <version>1.0</version>
</dependency>
<dependency>
    <groupId>com.google.guava</groupId>
    <artifactId>guava</artifactId>
    <version>18.0</version>
</dependency>

The library is in fact used by Google Wallet.

Here is how to create a jwt, and to verify it and deserialize it:

import java.security.InvalidKeyException;
import java.security.SignatureException;
import java.util.Calendar;
import java.util.List;

import net.oauth.jsontoken.JsonToken;
import net.oauth.jsontoken.JsonTokenParser;
import net.oauth.jsontoken.crypto.HmacSHA256Signer;
import net.oauth.jsontoken.crypto.HmacSHA256Verifier;
import net.oauth.jsontoken.crypto.SignatureAlgorithm;
import net.oauth.jsontoken.crypto.Verifier;
import net.oauth.jsontoken.discovery.VerifierProvider;
import net.oauth.jsontoken.discovery.VerifierProviders;

import org.apache.commons.lang3.StringUtils;
import org.bson.types.ObjectId;
import org.joda.time.DateTime;

import com.google.common.collect.Lists;
import com.google.gson.JsonObject;


/**
 * Provides static methods for creating and verifying access tokens and such. 
 * @author davidm
 *
 */
public class AuthHelper {

    private static final String AUDIENCE = "NotReallyImportant";

    private static final String ISSUER = "YourCompanyOrAppNameHere";

    private static final String SIGNING_KEY = "LongAndHardToGuessValueWithSpecialCharacters@^($%*$%";

    /**
     * Creates a json web token which is a digitally signed token that contains a payload (e.g. userId to identify 
     * the user). The signing key is secret. That ensures that the token is authentic and has not been modified.
     * Using a jwt eliminates the need to store authentication session information in a database.
     * @param userId
     * @param durationDays
     * @return
     */
    public static String createJsonWebToken(String userId, Long durationDays)    {
        //Current time and signing algorithm
        Calendar cal = Calendar.getInstance();
        HmacSHA256Signer signer;
        try {
            signer = new HmacSHA256Signer(ISSUER, null, SIGNING_KEY.getBytes());
        } catch (InvalidKeyException e) {
            throw new RuntimeException(e);
        }

        //Configure JSON token
        JsonToken token = new net.oauth.jsontoken.JsonToken(signer);
        token.setAudience(AUDIENCE);
        token.setIssuedAt(new org.joda.time.Instant(cal.getTimeInMillis()));
        token.setExpiration(new org.joda.time.Instant(cal.getTimeInMillis() + 1000L * 60L * 60L * 24L * durationDays));

        //Configure request object, which provides information of the item
        JsonObject request = new JsonObject();
        request.addProperty("userId", userId);

        JsonObject payload = token.getPayloadAsJsonObject();
        payload.add("info", request);

        try {
            return token.serializeAndSign();
        } catch (SignatureException e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * Verifies a json web token's validity and extracts the user id and other information from it. 
     * @param token
     * @return
     * @throws SignatureException
     * @throws InvalidKeyException
     */
    public static TokenInfo verifyToken(String token)  
    {
        try {
            final Verifier hmacVerifier = new HmacSHA256Verifier(SIGNING_KEY.getBytes());

            VerifierProvider hmacLocator = new VerifierProvider() {

                @Override
                public List<Verifier> findVerifier(String id, String key){
                    return Lists.newArrayList(hmacVerifier);
                }
            };
            VerifierProviders locators = new VerifierProviders();
            locators.setVerifierProvider(SignatureAlgorithm.HS256, hmacLocator);
            net.oauth.jsontoken.Checker checker = new net.oauth.jsontoken.Checker(){

                @Override
                public void check(JsonObject payload) throws SignatureException {
                    // don't throw - allow anything
                }

            };
            //Ignore Audience does not mean that the Signature is ignored
            JsonTokenParser parser = new JsonTokenParser(locators,
                    checker);
            JsonToken jt;
            try {
                jt = parser.verifyAndDeserialize(token);
            } catch (SignatureException e) {
                throw new RuntimeException(e);
            }
            JsonObject payload = jt.getPayloadAsJsonObject();
            TokenInfo t = new TokenInfo();
            String issuer = payload.getAsJsonPrimitive("iss").getAsString();
            String userIdString =  payload.getAsJsonObject("info").getAsJsonPrimitive("userId").getAsString();
            if (issuer.equals(ISSUER) && !StringUtils.isBlank(userIdString))
            {
                t.setUserId(new ObjectId(userIdString));
                t.setIssued(new DateTime(payload.getAsJsonPrimitive("iat").getAsLong()));
                t.setExpires(new DateTime(payload.getAsJsonPrimitive("exp").getAsLong()));
                return t;
            }
            else
            {
                return null;
            }
        } catch (InvalidKeyException e1) {
            throw new RuntimeException(e1);
        }
    }


}

public class TokenInfo {
    private ObjectId userId;
    private DateTime issued;
    private DateTime expires;
    public ObjectId getUserId() {
        return userId;
    }
    public void setUserId(ObjectId userId) {
        this.userId = userId;
    }
    public DateTime getIssued() {
        return issued;
    }
    public void setIssued(DateTime issued) {
        this.issued = issued;
    }
    public DateTime getExpires() {
        return expires;
    }
    public void setExpires(DateTime expires) {
        this.expires = expires;
    }
}

This is based on code here: https://developers.google.com/wallet/instant-buy/about-jwts And Here: https://code.google.com/p/wallet-online-sample-java/source/browse/src/com/google/wallet/online/jwt/util/WalletOnlineService.java?r=08b3333bd7260b20846d7d96d3cf15be8a128dfa

This might give you some ideas

.NET C# View Model

public class DepartmentViewModel
{
    public int Id { get; set; }
    public string Name { get; set; }
}

.NET C# Web Api Controller

public class DepartmentController : BaseApiController
{
    [HttpGet]
    public HttpResponseMessage Get()
    {
        var sms = Ctx.Departments;

        var vms = new List<DepartmentViewModel>();

        foreach (var sm in sms)
        {
            var vm = new DepartmentViewModel()
            {
                Id = sm.Id,
                Name = sm.DepartmentName
            };
            vms.Add(vm);
        }

        return Request.CreateResponse(HttpStatusCode.OK, vms);
    }

}

Angular Controller:

$http.get('/api/department').then(
    function (response) {
        $scope.departments = response.data;
    },
    function (response) {
        toaster.pop('error', "Error", "An unexpected error occurred.");
    }
);

$http.get('/api/getTravelerInformation', { params: { id: $routeParams.userKey } }).then(
   function (response) {
       $scope.request = response.data;
       $scope.travelerDepartment = underscoreService.findWhere($scope.departments, { Id: $scope.request.TravelerDepartmentId });
   },
    function (response) {
        toaster.pop('error', "Error", "An unexpected error occurred.");
    }
);

Angular Template:

<div class="form-group">
    <label>Department</label>
    <div class="left-inner-addon">
        <i class="glyphicon glyphicon-hand-up"></i>
        <select ng-model="travelerDepartment"
                ng-options="department.Name for department in departments track by department.Id"
                ng-init="request.TravelerDepartmentId = travelerDepartment.Id"
                ng-change="request.TravelerDepartmentId = travelerDepartment.Id"
                class="form-control">
            <option value=""></option>
        </select>
    </div>
</div>

$('#submit').click(function(){
   if($('#myMessage').val() == ''){
      alert('Input can not be left blank');
   }
});

Update

If you don't want whitespace also u can remove them using jQuery.trim()

Description: Remove the whitespace from the beginning and end of a string.

$('#submit').click(function(){
   if($.trim($('#myMessage').val()) == ''){
      alert('Input can not be left blank');
   }
});

Look in HTML output for actual client ID

You need to look in the generated HTML output to find out the right client ID. Open the page in browser, do a rightclick and View Source. Locate the HTML representation of the JSF component of interest and take its id as client ID. You can use it in an absolute or relative way depending on the current naming container. See following chapter.

Note: if it happens to contain iteration index like :0:, :1:, etc (because it's inside an iterating component), then you need to realize that updating a specific iteration round is not always supported. See bottom of answer for more detail on that.

Memorize NamingContainer components and always give them a fixed ID

If a component which you'd like to reference by ajax process/execute/update/render is inside the same NamingContainer parent, then just reference its own ID.

<h:form id="form">
    <p:commandLink update="result"> <!-- OK! -->
    <h:panelGroup id="result" />
</h:form>

If it's not inside the same NamingContainer, then you need to reference it using an absolute client ID. An absolute client ID starts with the NamingContainer separator character, which is by default :.

<h:form id="form">
    <p:commandLink update="result"> <!-- FAIL! -->
</h:form>
<h:panelGroup id="result" />

<h:form id="form">
    <p:commandLink update=":result"> <!-- OK! -->
</h:form>
<h:panelGroup id="result" />

<h:form id="form">
    <p:commandLink update=":result"> <!-- FAIL! -->
</h:form>
<h:form id="otherform">
    <h:panelGroup id="result" />
</h:form>

<h:form id="form">
    <p:commandLink update=":otherform:result"> <!-- OK! -->
</h:form>
<h:form id="otherform">
    <h:panelGroup id="result" />
</h:form>

NamingContainer components are for example <h:form>, <h:dataTable>, <p:tabView>, <cc:implementation> (thus, all composite components), etc. You recognize them easily by looking at the generated HTML output, their ID will be prepended to the generated client ID of all child components. Note that when they don't have a fixed ID, then JSF will use an autogenerated ID in j_idXXX format. You should absolutely avoid that by giving them a fixed ID. The OmniFaces NoAutoGeneratedIdViewHandler may be helpful in this during development.

If you know to find the javadoc of the UIComponent in question, then you can also just check in there whether it implements the NamingContainer interface or not. For example, the HtmlForm (the UIComponent behind <h:form> tag) shows it implements NamingContainer, but the HtmlPanelGroup (the UIComponent behind <h:panelGroup> tag) does not show it, so it does not implement NamingContainer. Here is the javadoc of all standard components and here is the javadoc of PrimeFaces.

Solving your problem

So in your case of:

<p:tabView id="tabs"><!-- This is a NamingContainer -->
    <p:tab id="search"><!-- This is NOT a NamingContainer -->
        <h:form id="insTable"><!-- This is a NamingContainer -->
            <p:dialog id="dlg"><!-- This is NOT a NamingContainer -->
                <h:panelGrid id="display">

The generated HTML output of <h:panelGrid id="display"> looks like this:

<table id="tabs:insTable:display">

You need to take exactly that id as client ID and then prefix with : for usage in update:

<p:commandLink update=":tabs:insTable:display">

Referencing outside include/tagfile/composite

If this command link is inside an include/tagfile, and the target is outside it, and thus you don't necessarily know the ID of the naming container parent of the current naming container, then you can dynamically reference it via UIComponent#getNamingContainer() like so:

<p:commandLink update=":#{component.namingContainer.parent.namingContainer.clientId}:display">

Or, if this command link is inside a composite component and the target is outside it:

<p:commandLink update=":#{cc.parent.namingContainer.clientId}:display">

Or, if both the command link and target are inside same composite component:

<p:commandLink update=":#{cc.clientId}:display">

See also Get id of parent naming container in template for in render / update attribute

How does it work under the covers

This all is specified as "search expression" in the UIComponent#findComponent() javadoc:

A search expression consists of either an identifier (which is matched exactly against the id property of a UIComponent, or a series of such identifiers linked by the UINamingContainer#getSeparatorChar character value. The search algorithm should operates as follows, though alternate alogrithms may be used as long as the end result is the same:

• Identify the UIComponent that will be the base for searching, by stopping as soon as one of the following conditions is met:
  • If the search expression begins with the the separator character (called an "absolute" search expression), the base will be the root UIComponent of the component tree. The leading separator character will be stripped off, and the remainder of the search expression will be treated as a "relative" search expression as described below.
  • Otherwise, if this UIComponent is a NamingContainer it will serve as the basis.
  • Otherwise, search up the parents of this component. If a NamingContainer is encountered, it will be the base.
  • Otherwise (if no NamingContainer is encountered) the root UIComponent will be the base.
• The search expression (possibly modified in the previous step) is now a "relative" search expression that will be used to locate the component (if any) that has an id that matches, within the scope of the base component. The match is performed as follows:
  • If the search expression is a simple identifier, this value is compared to the id property, and then recursively through the facets and children of the base UIComponent (except that if a descendant NamingContainer is found, its own facets and children are not searched).
  • If the search expression includes more than one identifier separated by the separator character, the first identifier is used to locate a NamingContainer by the rules in the previous bullet point. Then, the findComponent() method of this NamingContainer will be called, passing the remainder of the search expression.

Note that PrimeFaces also adheres the JSF spec, but RichFaces uses "some additional exceptions".

"reRender" uses UIComponent.findComponent() algorithm (with some additional exceptions) to find the component in the component tree.

Those additional exceptions are nowhere in detail described, but it's known that relative component IDs (i.e. those not starting with :) are not only searched in the context of the closest parent NamingContainer, but also in all other NamingContainer components in the same view (which is a relatively expensive job by the way).

Never use prependId="false"

If this all still doesn't work, then verify if you aren't using <h:form prependId="false">. This will fail during processing the ajax submit and render. See also this related question: UIForm with prependId="false" breaks <f:ajax render>.

Referencing specific iteration round of iterating components

It was for long time not possible to reference a specific iterated item in iterating components like <ui:repeat> and <h:dataTable> like so:

<h:form id="form">
    <ui:repeat id="list" value="#{['one','two','three']}" var="item">
        <h:outputText id="item" value="#{item}" /><br/>
    </ui:repeat>

    <h:commandButton value="Update second item">
        <f:ajax render=":form:list:1:item" />
    </h:commandButton>
</h:form>

However, since Mojarra 2.2.5 the <f:ajax> started to support it (it simply stopped validating it; thus you would never face the in the question mentioned exception anymore; another enhancement fix is planned for that later).

This only doesn't work yet in current MyFaces 2.2.7 and PrimeFaces 5.2 versions. The support might come in the future versions. In the meanwhile, your best bet is to update the iterating component itself, or a parent in case it doesn't render HTML, like <ui:repeat>.

When using PrimeFaces, consider Search Expressions or Selectors

PrimeFaces Search Expressions allows you to reference components via JSF component tree search expressions. JSF has several builtin:

• @this: current component
• @form: parent UIForm
• @all: entire document
• @none: nothing

PrimeFaces has enhanced this with new keywords and composite expression support:

• @parent: parent component
• @namingcontainer: parent UINamingContainer
• @widgetVar(name): component as identified by given widgetVar

You can also mix those keywords in composite expressions such as @form:@parent, @this:@parent:@parent, etc.

PrimeFaces Selectors (PFS) as in @(.someclass) allows you to reference components via jQuery CSS selector syntax. E.g. referencing components having all a common style class in the HTML output. This is particularly helpful in case you need to reference "a lot of" components. This only prerequires that the target components have all a client ID in the HTML output (fixed or autogenerated, doesn't matter). See also How do PrimeFaces Selectors as in update="@(.myClass)" work?

Either the main httpd.conf or the .htaccess file in this directory or a nearby parent directory probably includes:

Options -Indexes

Your host may have to set it to +Indexes if you don't have access in .htaccess and want to list & browse the directory contents, absent a default index.html, index.php, etc. If the directory should not have a default file and you don't enable Indexes, you may only directly target the filenames of contents within it.

The Indexes option is commonly disabled by default on many Apache installations.

Full details are available in the Apache core documentation on Options

CONTAINS is for a Full Text Indexed field - if not, then use LIKE

I usually use selectors in my main stylesheet, then make an ie6 specific .js (jquery) file that adds a class to all of the input types. Example:

$(document).ready(function(){
  $("input[type='text']").addClass('text');
)};

And then just duplicate my styles in the ie6 specific stylesheet using the classes. That way the actual markup is a little bit cleaner.

I use this:

 public String SEG2HOR( long lnValue) {     //OK
        String lcStr = "00:00:00";
        String lcSign = (lnValue>=0 ? " " : "-");
        lnValue = lnValue * (lnValue>=0 ? 1 : -1); 

        if (lnValue>0) {                
            long lnHor  = (lnValue/3600);
            long lnHor1 = (lnValue % 3600);
            long lnMin  = (lnHor1/60);
            long lnSec  = (lnHor1 % 60);            

                        lcStr = lcSign + ( lnHor < 10 ? "0": "") + String.valueOf(lnHor) +":"+
                              ( lnMin < 10 ? "0": "") + String.valueOf(lnMin) +":"+
                              ( lnSec < 10 ? "0": "") + String.valueOf(lnSec) ;
        }

        return lcStr;           
    }

The use of scriptlets (those <% %> things) in JSP is indeed highly discouraged since the birth of taglibs (like JSTL) and EL (Expression Language, those ${} things) way back in 2001.

The major disadvantages of scriptlets are:

1. Reusability: you can't reuse scriptlets.
2. Replaceability: you can't make scriptlets abstract.
3. OO-ability: you can't make use of inheritance/composition.
4. Debuggability: if scriptlet throws an exception halfway, all you get is a blank page.
5. Testability: scriptlets are not unit-testable.
6. Maintainability: per saldo more time is needed to maintain mingled/cluttered/duplicated code logic.

Sun Oracle itself also recommends in the JSP coding conventions to avoid use of scriptlets whenever the same functionality is possible by (tag) classes. Here are several cites of relevance:

From JSP 1.2 Specification, it is highly recommended that the JSP Standard Tag Library (JSTL) be used in your web application to help reduce the need for JSP scriptlets in your pages. Pages that use JSTL are, in general, easier to read and maintain.

...

Where possible, avoid JSP scriptlets whenever tag libraries provide equivalent functionality. This makes pages easier to read and maintain, helps to separate business logic from presentation logic, and will make your pages easier to evolve into JSP 2.0-style pages (JSP 2.0 Specification supports but de-emphasizes the use of scriptlets).

...

In the spirit of adopting the model-view-controller (MVC) design pattern to reduce coupling between the presentation tier from the business logic, JSP scriptlets should not be used for writing business logic. Rather, JSP scriptlets are used if necessary to transform data (also called "value objects") returned from processing the client's requests into a proper client-ready format. Even then, this would be better done with a front controller servlet or a custom tag.

How to replace scriptlets entirely depends on the sole purpose of the code/logic. More than often this code is to be placed in a fullworthy Java class:

• If you want to invoke the same Java code on every request, less-or-more regardless of the requested page, e.g. checking if a user is logged in, then implement a filter and write code accordingly in doFilter() method. E.g.:

  public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws ServletException, IOException {
      if (((HttpServletRequest) request).getSession().getAttribute("user") == null) {
          ((HttpServletResponse) response).sendRedirect("login"); // Not logged in, redirect to login page.
      } else {
          chain.doFilter(request, response); // Logged in, just continue request.
      }
  }
  

  When mapped on an appropriate <url-pattern> covering the JSP pages of interest, then you don't need to copypaste the same piece of code overall JSP pages.

  ---

• If you want to invoke some Java code to preprocess a request, e.g. preloading some list from a database to display in some table, if necessary based on some query parameters, then implement a servlet and write code accordingly in doGet() method. E.g.:

  protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
      try {
          List<Product> products = productService.list(); // Obtain all products.
          request.setAttribute("products", products); // Store products in request scope.
          request.getRequestDispatcher("/WEB-INF/products.jsp").forward(request, response); // Forward to JSP page to display them in a HTML table.
      } catch (SQLException e) {
          throw new ServletException("Retrieving products failed!", e);
      }
  }
  

  This way dealing with exceptions is easier. The DB is not accessed in the midst of JSP rendering, but far before the JSP is been displayed. You still have the possibility to change the response whenever the DB access throws an exception. In the above example, the default error 500 page will be displayed which you can anyway customize by an <error-page> in web.xml.

  ---

• If you want to invoke some Java code to postprocess a request, e.g. processing a form submit, then implement a servlet and write code accordingly in doPost() method. E.g.:

  protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
      String username = request.getParameter("username");
      String password = request.getParameter("password");
      User user = userService.find(username, password);
  
      if (user != null) {
          request.getSession().setAttribute("user", user); // Login user.
          response.sendRedirect("home"); // Redirect to home page.
      } else {
          request.setAttribute("message", "Unknown username/password. Please retry."); // Store error message in request scope.
          request.getRequestDispatcher("/WEB-INF/login.jsp").forward(request, response); // Forward to JSP page to redisplay login form with error.
      }
  }
  

  This way dealing with different result page destinations is easier: redisplaying the form with validation errors in case of an error (in this particular example you can redisplay it using ${message} in EL), or just taking to the desired target page in case of success.

  ---

• If you want to invoke some Java code to control the execution plan and/or the destination of the request and the response, then implement a servlet according to the MVC's Front Controller Pattern. E.g.:

  protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
      try {
          Action action = ActionFactory.getAction(request);
          String view = action.execute(request, response);
  
          if (view.equals(request.getPathInfo().substring(1)) {
              request.getRequestDispatcher("/WEB-INF/" + view + ".jsp").forward(request, response);
          } else {
              response.sendRedirect(view);
          }
      } catch (Exception e) {
          throw new ServletException("Executing action failed.", e);
      }
  }
  

  Or just adopt an MVC framework like JSF, Spring MVC, Wicket, etc so that you end up with just a JSP/Facelets page and a JavaBean class without the need for a custom servlet.

  ---

• If you want to invoke some Java code to control the flow inside a JSP page, then you need to grab an (existing) flow control taglib like JSTL core. E.g. displaying List<Product> in a table:

  <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
  ...
  <table>
      <c:forEach items="${products}" var="product">
          <tr>
              <td>${product.name}</td>
              <td>${product.description}</td>
              <td>${product.price}</td>
          </tr>
      </c:forEach>
  </table>
  

  With XML-style tags which fit nicely among all that HTML, the code is better readable (and thus better maintainable) than a bunch of scriptlets with various opening and closing braces ("Where the heck does this closing brace belong to?"). An easy aid is to configure your web application to throw an exception whenever scriptlets are still been used by adding the following piece to web.xml:

  <jsp-config>
      <jsp-property-group>
          <url-pattern>*.jsp</url-pattern>
          <scripting-invalid>true</scripting-invalid>
      </jsp-property-group>
  </jsp-config>
  

  In Facelets, the successor of JSP, which is part of the Java EE provided MVC framework JSF, it is already not possible to use scriptlets. This way you're automatically forced to do things "the right way".

  ---

• If you want to invoke some Java code to access and display "backend" data inside a JSP page, then you need to use EL (Expression Language), those ${} things. E.g. redisplaying submitted input values:

  <input type="text" name="foo" value="${param.foo}" />
  

  The ${param.foo} displays the outcome of request.getParameter("foo").

  ---

• If you want to invoke some utility Java code directly in the JSP page (typically public static methods), then you need to define them as EL functions. There's a standard functions taglib in JSTL, but you can also easily create functions yourself. Here's an example how JSTL fn:escapeXml is useful to prevent XSS attacks.

  <%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn" %>
  ...
  <input type="text" name="foo" value="${fn:escapeXml(param.foo)}" />
  

  Note that the XSS sensitivity is in no way specifically related to Java/JSP/JSTL/EL/whatever, this problem needs to be taken into account in every web application you develop. The problem of scriptlets is that it provides no way of builtin preventions, at least not using the standard Java API. JSP's successor Facelets has already implicit HTML escaping, so you don't need to worry about XSS holes in Facelets.

See also:

• What's the difference between JSP, Servlet and JSF?
• How does Servlet, ServletContext, HttpSession and HttpServletRequest/Response work?
• Basic MVC example with JSP, Servlet and JDBC
• Design patterns in Java web applications
• Hidden features of JSP/Servlet

Use Html.Raw(). Phil Haack posted a nice syntax guide at http://haacked.com/archive/2011/01/06/razor-syntax-quick-reference.aspx.

<div class='content'>
    @Html.Raw( Model.Content )
</div>

I really need to instantiate a T in Foo using a parameter-less constructor

Simple answer is "you cant do that" java uses type erasure to implment generics which would prevent you from doing this.

How can one work around Java's limitation?

One way (there could be others) is to pass the object that you would pass the instance of T to the constructor of Foo<T>. Or you could have a method setBar(T theInstanceofT); to get your T instead of instantiating in the class it self.

Use something like this:

var myVar = null;

And then inside your function:

myVar = fldID;

And then:

setTimeout(setFocus,1000)

And then:

function setFocus(){ document.getElementById(fldID).focus(); }

Final code:

<html>
<head>
    <script type="text/javascript">
        function somefunction(){
            var myVar = null;

            myVar = document.getElementById('myInput');

            if(myVar.value=='')
                setTimeout(setFocusOnJobTitle,1000);
            else
                myVar.value='Success';
        }
        function setFocusOnJobTitle(){
            document.getElementById('myInput').focus();
        }
    </script>
</head>
<body>
<label id="jobTitleId" for="myInput">Job Title</label>
<input id="myInput" onblur="somefunction();"></input>
</body>
</html>