In here:

    if (ValidationUtils.isNullOrEmpty(lastName)) {
        registrationErrors.add(ValidationErrors.LAST_NAME);
    }
    if (!ValidationUtils.isEmailValid(email)) {
        registrationErrors.add(ValidationErrors.EMAIL);
    }

you check for null or empty value on lastname, but in isEmailValid you don't check for empty value. Something like this should do

    if (ValidationUtils.isNullOrEmpty(email) || !ValidationUtils.isEmailValid(email)) {
        registrationErrors.add(ValidationErrors.EMAIL);
    }

or better yet, fix your ValidationUtils.isEmailValid() to cope with null email values. It shouldn't crash, it should just return false.

1.Add a another view controller in “didFinishLaunchingWithOptions”

 UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];

UINavigationController *homeNav = [storyboard instantiateViewControllerWithIdentifier:@"NavigationControllerView"];
UIViewController *viewController = [storyboard instantiateViewControllerWithIdentifier:@"SplashViewController"];

self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
self.window.rootViewController = homeNav;
[self.window makeKeyAndVisible];

[(UINavigationController *)self.window.rootViewController pushViewController:viewController animated:NO];
}

2.In view did load of SplashView Controller

  [self performSelector:@selector(removeSplashScreenAddViewController) withObject:nil afterDelay:2.0];

3.In removeSplashScreenAddViewController method you can add your main view controller for eg.-

- (void) removeSplashScreenAddViewController {`  UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
UINavigationController *homeNav = [storyboard instantiateViewControllerWithIdentifier:@"HomeNav"];
UIViewController *viewController = [storyboard instantiateViewControllerWithIdentifier:viewControllerName];

UIWindow *window =  [StaticHelper mainWindow];
window.rootViewController = homeNav;
[window makeKeyAndVisible];

[(UINavigationController *)window.rootViewController pushViewController:viewController animated:NO];`}

Very late to the game, but this is a version of Chris Pratt's answer that protects against race conditions while sacrificing performance, by using a transaction block and select_for_update()

@receiver(pre_save, sender=MyModel)
@transaction.atomic
def do_something_if_changed(sender, instance, **kwargs):
    try:
        obj = sender.objects.select_for_update().get(pk=instance.pk)
    except sender.DoesNotExist:
        pass # Object is new, so field hasn't technically changed, but you may want to do something else here.
    else:
        if not obj.some_field == instance.some_field: # Field has changed
            # do something

Most browsers support the display: table; CSS rule. This is a good trick to center a div in a container without adding extra HTML nor applying constraining styles to the container (like text-align: center; which would center all other inline content in the container), while keeping dynamic width for the contained div:

HTML:

<div class="container">
  <div class="centered">This content is centered</div>
</div>

CSS:

.centered { display: table; margin: 0 auto; }

.container {_x000D_
  background-color: green;_x000D_
}_x000D_
.centered {_x000D_
  display: table;_x000D_
  margin: 0 auto;_x000D_
  background-color: red;_x000D_
}

<div class="container">_x000D_
  <div class="centered">This content is centered</div>_x000D_
</div>

Update (2015-03-09):

The proper way to do this today is actually to use flexbox rules. Browser support is a little bit more restricted (CSS table support vs flexbox support) but this method also allows many other things, and is a dedicated CSS rule for this type of behavior:

HTML:

<div class="container">
  <div class="centered">This content is centered</div>
</div>

CSS:

.container {
  display: flex;
  flex-direction: column; /* put this if you want to stack elements vertically */
}
.centered { margin: 0 auto; }

.container {_x000D_
  display: flex;_x000D_
  flex-direction: column; /* put this if you want to stack elements vertically */_x000D_
  background-color: green;_x000D_
}_x000D_
.centered {_x000D_
  margin: 0 auto;_x000D_
  background-color: red;_x000D_
}

<div class="container">_x000D_
  <div class="centered">This content is centered</div>_x000D_
</div>

Couldn't find any official documentation (no surprise there) but according to this interesting article, those elements are injected in order to enable Word to convert the HTML back to fully compatible Word document, with everything preserved.

The relevant paragraph:

Microsoft added the special tags to Word's HTML with an eye toward backward compatibility. Microsoft wanted you to be able to save files in HTML complete with all of the tracking, comments, formatting, and other special Word features found in traditional DOC files. If you save a file in HTML and then reload it in Word, theoretically you don't loose anything at all.

This makes lots of sense.

For your specific question.. the o in the <o:p> means "Office namespace" so anything following the o: in a tag means "I'm part of Office namespace" - in case of <o:p> it just means paragraph, the equivalent of the ordinary <p> tag.

I assume that every HTML tag has its Office "equivalent" and they have more.

Use SelectTab like this:

TabPage t = tabControl1.TabPages[2];
tabControl1.SelectTab(t); //go to tab

Use SelectedTab like this:

TabPage t = tabControl1.TabPages[2];
tabControl1.SelectedTab = t; //go to tab

Thanks for this, very useful.

It would help though if the code were syntactically correct. As it is there's a { too many around line 20. Which I'm afraid means nobody actually tried this out.

I may be crazy, but after trying it on a few valid and invalid addresses, the only version of validate_ip() that worked was this:

    public function validate_ip($ip)
    {
        if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE) === false)
            return false;
        if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_RES_RANGE) === false)
            return false;
        if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4) === false && filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6) === false)
            return false;

        return true;
    }

It is purely a string:

startInfo.Arguments = "-sk server -sky exchange -pe -n CN=localhost -ir LocalMachine -is Root -ic MyCA.cer -sr LocalMachine -ss My MyAdHocTestCert.cer"

Of course, when arguments contain whitespaces you'll have to escape them using \" \", like:

"... -ss \"My MyAdHocTestCert.cer\""

See MSDN for this.

Ensure that any user-specific configs are included!

If none of the other answers on this page for you work, here's what I ran into after hours of floundering around.

I used user-specific configurations, with Sites specified as my UserDir in /private/etc/apache2/extra/httpd-userdir.conf. However, I was forbidden access to the endpoint http://localhost/~jwork/.

I could see in /var/log/apache2/error_log that access to /Users/jwork/Sites/ was being blocked. However, I was permitted to access the DocumentRoot, via http://localhost/. This suggested that I didn't have rights to view the ~jwork user. But as far as I could tell by ps aux | egrep '(apache|httpd)' and lsof -i :80, Apache was running for the jwork user, so something was clearly not write with my user configuration.

Given a user named jwork, here was my config file:

/private/etc/apache2/users/jwork.conf

<Directory "/Users/jwork/Sites/">
    Require all granted
</Directory>

This config is perfectly valid. However, I found that my user config wasn't being included:

/private/etc/apache2/extra/httpd-userdir.conf

## Note how it's commented out by default.
## Just remove the comment to enable your user conf.
#Include /private/etc/apache2/users/*.conf

Note that this is the default path to the userdir conf file, but as you'll see below, it's configurable in httpd.conf. Ensure that the following lines are enabled:

/private/etc/apache2/httpd.conf

Include /private/etc/apache2/extra/httpd-userdir.conf

# ...

LoadModule userdir_module libexec/apache2/mod_userdir.so

substr() is a built-in php function which returns part of a string. The function substr() will take a string as input, the index form where you want the string to be trimmed. and an optional parameter is the length of the substring. You can see proper documentation and example code on http://php.net/manual/en/function.substr.php

NOTE : index for a string starts with 0.

Check this answer for C++11. Basically, if you pass an lvalue the rvalue reference

From this article:

void f1(String s) {
    vector<String> v;
    v.push_back(std::move(s));
}
void f2(const String &s) {
    vector<String> v;
    v.push_back(s);
}

"For lvalue argument, ‘f1’ has one extra copy to pass the argument because it is by-value, while ‘f2’ has one extra copy to call push_back. So no difference; for rvalue argument, the compiler has to create a temporary ‘String(L“”)’ and pass the temporary to ‘f1’ or ‘f2’ anyway. Because ‘f2’ can take advantage of move ctor when the argument is a temporary (which is an rvalue), the costs to pass the argument are the same now for ‘f1’ and ‘f2’."

Continuing: " This means in C++11 we can get better performance by using pass-by-value approach when:

1. The parameter type supports move semantics - All standard library components do in C++11
2. The cost of move constructor is much cheaper than the copy constructor (both the time and stack usage).
3. Inside the function, the parameter type will be passed to another function or operation which supports both copy and move.
4. It is common to pass a temporary as the argument - You can organize you code to do this more.

"

OTOH, for C++98 it is best to pass by reference - less data gets copied around. Passing const or non const depend of whether you need to change the argument or not.

Your origin repository is ahead of your local repository. You'll need to pull down changes from the origin repository as follows before you can push. This can be executed between your commit and push.

git pull origin development

development refers to the branch you want to pull from. If you want to pull from master branch then type this one.

git pull origin master

If you've got VS2010 installed, you ought to find a .NET 4.0 gacutil at

C:\Program Files\Microsoft SDKs\Windows\v7.0A\bin\NETFX 4.0 Tools

The 7.0A Windows SDK should have been installed alongside VS2010 - 6.0A will have been installed with VS2008, and hence won't have .NET 4.0 support.

parent.children is not an array. It is HTMLCollection and it does not have forEach method. You can convert it to the array first. For example in ES6:

Array.from(parent.children).forEach(child => {
    console.log(child)
});

or using spread operator:

[...parent.children].forEach(function (child) {
    console.log(child)
});

Most of the time, when you try to assing value into object, and if the value is null, then this kind of exception occur. Please check this link.

for the sake of self learning, you can put some check condition. like

if (myObj== null)
Console.Write("myObj is NULL");

Yes, it's possible to use inline if-expressions:

{{ 'Update' if files else 'Continue' }}

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

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

You can't unless you're using some kind of extended CSS such as SASS. However it is very reasonable to apply those two extra classes to .someDiv.

If .someDiv is unique I would also choose to give it an id and referencing it in css using the id.

You can get its shape with:

print((df.count(), len(df.columns)))

You can create external command Run -> External Tools -> External Tools Configuration...

It will be available under Run -> External Tools and can be run using shortcuts.

If I may expand on user987361's answer:

From the offline access portion of the OAuth2.0 docs:

When your application receives a refresh token, it is important to store that refresh token for future use. If your application loses the refresh token, it will have to re-prompt the user for consent before obtaining another refresh token. If you need to re-prompt the user for consent, include the approval_prompt parameter in the authorization code request, and set the value to force.

So, when you have already granted access, subsequent requests for a grant_type of authorization_code will not return the refresh_token, even if access_type was set to offline in the query string of the consent page.

As stated in the quote above, in order to obtain a new refresh_token after already receiving one, you will need to send your user back through the prompt, which you can do by setting approval_prompt to force.

Cheers,

PS This change was announced in a blog post as well.

Login to virtual machine use below command to check ip address. (anyone will work)

1. ifconfig
2. ip addr show

If you used NAT for your virtual machine settings(your machine ip will be 10.0.2.15), then you have to use port forwarding to connect to machine. IP address will be 127.0.0.1

If you used bridged networking/Host only networking, then you will have separate Ip address. Use that IP address to connect virtual machine

To parse complicated types, you start at the variable, go left, and spiral outwards. If there aren't any arrays or functions to worry about (because these sit to the right of the variable name) this becomes a case of reading from right-to-left.

So with char *const a; you have a, which is a const pointer (*) to a char. In other words you can change the char which a is pointing at, but you can't make a point at anything different.

Conversely with const char* b; you have b, which is a pointer (*) to a char which is const. You can make b point at any char you like, but you cannot change the value of that char using *b = ...;.

You can also of course have both flavours of const-ness at one time: const char *const c;.

It's perfectly possible to update multiple columns in the same statement, and in fact your code is doing it. So why does it seem that "INV_TOTAL is not updating, only the inv_discount"?

Because you're updating INV_TOTAL with INV_DISCOUNT, and the database is going to use the existing value of INV_DISCOUNT and not the one you change it to. So I'm afraid what you need to do is this:

UPDATE INVOICE
   SET INV_DISCOUNT = DISC1 * INV_SUBTOTAL
     , INV_TOTAL    = INV_SUBTOTAL - (DISC1 * INV_SUBTOTAL)     
WHERE INV_ID = I_INV_ID;

        

Perhaps that seems a bit clunky to you. It is, but the problem lies in your data model. Storing derivable values in the table, rather than deriving when needed, rarely leads to elegant SQL.

First, I strongly recommend that you rename your variable list to something else. list is the name of the built-in list constructor, and you're hiding its normal function. I will rename list to a in the following.

Python names are references that are bound to objects. That means that unless you create more than one list, whenever you use a it's referring to the same actual list object as last time. So when you call

listoflists.append((a, a[0]))

you can later change a and it changes what the first element of that tuple points to. This does not happen with a[0] because the object (which is an integer) pointed to by a[0] doesn't change (although a[0] points to different objects over the run of your code).

You can create a copy of the whole list a using the list constructor:

listoflists.append((list(a), a[0]))

Or, you can use the slice notation to make a copy:

listoflists.append((a[:], a[0]))

There is an alternative solution to this problem which also deals with duplicate matches.

We start with 2 lists of equal length: emails, otherarray. The objective is to remove items from both lists for each index i where emails[i] == '[email protected]'.

This can be achieved using a list comprehension and then splitting via zip:

emails = ['[email protected]', '[email protected]', '[email protected]']
otherarray = ['some', 'other', 'details']

from operator import itemgetter

res = [(i, j) for i, j in zip(emails, otherarray) if i!= '[email protected]']
emails, otherarray = map(list, map(itemgetter(0, 1), zip(*res)))

print(emails)      # ['[email protected]', '[email protected]']
print(otherarray)  # ['some', 'details']

As mentioned, for efficiency reasons sequential spaces are consolidated into one space the browser actually displays. Remember what the ML in HTML stand for. It's a Mark-up Language, designed to control how text is displayed.. not whitespace :p

Still, you can pretend the browser respects tabs since all the TAB does is prepend 4 spaces, and that's easy with CSS. either in line like ...

 <div style="padding-left:4.00em;">Indenented text </div>

Or as a regular class in a style sheet

.tabbed {padding-left:4.00em;}

Then the HTML might look like

<p>regular paragraph regular paragraph regular paragraph</p>
<p class="tabbed">Indented text Indented text Indented text</p>
<p>regular paragraph regular paragraph regular paragraph</p>

convert data-frame to list of dictionary

list_dict = []

for index, row in list(df.iterrows()):
    list_dict.append(dict(row))

save file

with open("output.json", mode) as f:
    f.write("\n".join(str(item) for item in list_dict))

My first thought is you could use git rev-list HEAD, which lists all the revs in reverse chronological order, in combination with git tag --contains. When you find a ref where git tag --contains produces a nonempty list, you have found the most recent tag(s).

In SQL 2005, you first need to show the Database Name column in your trace. The easiest thing to do is to pick the Tuning template, which has that column added already.

Assuming you have the Tuning template selected, to filter:

• Click the "Events Selection" tab
• Click the "Column Filters" button
• Check Show all Columns (Right Side Down)
• Select "DatabaseName", click the plus next to Like in the right-hand pane, and type your database name.

I always save the trace to a table too so I can do LIKE queries on the trace data after the fact.

The receiver must set port of receiver to match port set in sender DatagramPacket. For debugging try listening on port > 1024 (e.g. 8000 or 9000). Ports < 1024 are typically used by system services and need admin access to bind on such a port.

If the receiver sends packet to the hard-coded port it's listening to (e.g. port 57) and the sender is on the same machine then you would create a loopback to the receiver itself. Always use the port specified from the packet and in case of production software would need a check in any case to prevent such a case.

Another reason a packet won't get to destination is the wrong IP address specified in the sender. UDP unlike TCP will attempt to send out a packet even if the address is unreachable and the sender will not receive an error indication. You can check this by printing the address in the receiver as a precaution for debugging.

In the sender you set:

 byte [] IP= { (byte)192, (byte)168, 1, 106 };
 InetAddress address = InetAddress.getByAddress(IP);

but might be simpler to use the address in string form:

 InetAddress address = InetAddress.getByName("192.168.1.106");

In other words, you set target as 192.168.1.106. If this is not the receiver then you won't get the packet.

Here's a simple UDP Receiver that works :

import java.io.IOException;
import java.net.*;

public class Receiver {

    public static void main(String[] args) {
        int port = args.length == 0 ? 57 : Integer.parseInt(args[0]);
        new Receiver().run(port);
    }

    public void run(int port) {    
      try {
        DatagramSocket serverSocket = new DatagramSocket(port);
        byte[] receiveData = new byte[8];
        String sendString = "polo";
        byte[] sendData = sendString.getBytes("UTF-8");

        System.out.printf("Listening on udp:%s:%d%n",
                InetAddress.getLocalHost().getHostAddress(), port);     
        DatagramPacket receivePacket = new DatagramPacket(receiveData,
                           receiveData.length);

        while(true)
        {
              serverSocket.receive(receivePacket);
              String sentence = new String( receivePacket.getData(), 0,
                                 receivePacket.getLength() );
              System.out.println("RECEIVED: " + sentence);
              // now send acknowledgement packet back to sender     
              DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length,
                   receivePacket.getAddress(), receivePacket.getPort());
              serverSocket.send(sendPacket);
        }
      } catch (IOException e) {
              System.out.println(e);
      }
      // should close serverSocket in finally block
    }
}

According to Javascript Date Documentation, you can easily do this way:

var twoHoursBefore = new Date();
twoHoursBefore.setHours(twoHoursBefore.getHours() - 2);

And don't worry about if hours you set will be out of 0..23 range. Date() object will update the date accordingly.

Have you tried ALTER SYSTEM KILL SESSION? Get the SID and SERIAL# from V$SESSION for each session in the given schema, then do

ALTER SCHEMA KILL SESSION sid,serial#;

Here is example of taking XML file from raw folder:

 InputStream XmlFileInputStream = getResources().openRawResource(R.raw.taskslists5items); // getting XML

Then you can:

 String sxml = readTextFile(XmlFileInputStream);

when:

 public String readTextFile(InputStream inputStream) {
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();

        byte buf[] = new byte[1024];
        int len;
        try {
            while ((len = inputStream.read(buf)) != -1) {
                outputStream.write(buf, 0, len);
            }
            outputStream.close();
            inputStream.close();
        } catch (IOException e) {

        }
        return outputStream.toString();
    }

You could have just changed your query to:

SELECT ename, empno, (SELECT ename FROM EMP WHERE empno = e.mgr)AS MANAGER, mgr 
from emp e 
order by empno;

This would tell the engine that for the inner emp table, empno should be matched with mgr column from the outer table.

Just put the following code on the top of the page

@{
    Layout = "";
}

Git Stash Pop vs apply Working

If you want to apply your top stashed changes to current non-staged change and delete that stash as well, then you should go for git stash pop.

# apply the top stashed changes and delete it from git stash area.
git stash pop  

But if you are want to apply your top stashed changes to current non-staged change without deleting it, then you should go for git stash apply.

Note : You can relate this case with Stack class pop() and peek() methods, where pop change the top by decrements (top = top-1) but peek() only able to get the top element.

Linalg code that relies heavily on Pentiums and later processors' vector computing capabilities (starting with the MMX extensions, like LAPACK and now Atlas BLAS) is not "fantastically optimized", but simply industry-standard. To replicate that perfomance in Java you are going to need native libraries. I have had the same performance problem as you describe (mainly, to be able to compute Choleski decompositions) and have found nothing really efficient: Jama is pure Java, since it is supposed to be just a template and reference kit for implementers to follow... which never happened. You know Apache math commons... As for COLT, I have still to test it but it seems to rely heavily on Ninja improvements, most of which were reached by building an ad-hoc Java compiler, so I doubt it's going to help. At that point, I think we "just" need a collective effort to build a native Jama implementation...

ByteArrayOutputStream buffer = (ByteArrayOutputStream) aOutputStream;
byte[] bytes = buffer.toByteArray();
InputStream inputStream = new ByteArrayInputStream(bytes);

Bootstrap select has an noneSelectedText option. You can set it via data-none-selected-text attribute. Documentation.

Try the solutions here: http://techdem.centerkey.com/2009/05/javahome-command-script.html

These are much more robust to change -- like when you upgrade the JDK or JRE, since there is no hard coded path.

The quick solution (if you don't want to read the blog) is

C:\>for /d %i in ("\Program Files\Java\jdk*") do set JAVA_HOME=%i
C:\>set PATH=%PATH%;%JAVA_HOME%

You can then add these lines to a startup/login script.

The code finally used is the following from:

http://www.java2s.com/Code/Java/File-Input-Output/ConvertInputStreamtoString.htm

public static String convertStreamToString(InputStream is) throws Exception {
    BufferedReader reader = new BufferedReader(new InputStreamReader(is));
    StringBuilder sb = new StringBuilder();
    String line = null;
    while ((line = reader.readLine()) != null) {
      sb.append(line).append("\n");
    }
    reader.close();
    return sb.toString();
}

public static String getStringFromFile (String filePath) throws Exception {
    File fl = new File(filePath);
    FileInputStream fin = new FileInputStream(fl);
    String ret = convertStreamToString(fin);
    //Make sure you close all streams.
    fin.close();        
    return ret;
}

Maybe you could add a static class with your custom namespace and the same class name:

using CLRConsole = System.Console;

namespace ExtensionMethodsDemo
{
    public static class Console
    {
        public static void WriteLine(string value)
        {
            CLRConsole.WriteLine(value);
        }

        public static void WriteBlueLine(string value)
        {
            System.ConsoleColor currentColor = CLRConsole.ForegroundColor;

            CLRConsole.ForegroundColor = System.ConsoleColor.Blue;
            CLRConsole.WriteLine(value);

            CLRConsole.ForegroundColor = currentColor;
        }

        public static System.ConsoleKeyInfo ReadKey(bool intercept)
        {
            return CLRConsole.ReadKey(intercept);
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                Console.WriteBlueLine("This text is blue");   
            }
            catch (System.Exception ex)
            {
                Console.WriteLine(ex.Message);
                Console.WriteLine(ex.StackTrace);
            }

            Console.WriteLine("Press any key to continue...");
            Console.ReadKey(true);
        }
    }
}

The AngularJS Bootstrap website hasn't been updated with the latest documentation. About 3 months ago pkozlowski-opensource authored a change to separate out $modal from $dialog commit is below:

https://github.com/angular-ui/bootstrap/commit/d7a48523e437b0a94615350a59be1588dbdd86bd

In that commit he added new documentation for $modal, which can be found below:

https://github.com/angular-ui/bootstrap/blob/d7a48523e437b0a94615350a59be1588dbdd86bd/src/modal/docs/readme.md.

Hope this helps!

I encountered this problem while executing the "npm publish" command.

Then I checked the error log, and solved this by executing "npm config set registry http://registry.npmjs.org" command. The obvious reason for this problem is that I set up another registry.

So, if you are in the same situation as mine, try setting the registry to official one.

You can just do

print()

to get an empty line.

I know this topic is old, but there are no correct answers.

rotation transform rotates the element from its center, so, a wider element will rotate this way:

Applying overflow: hidden hides the longest dimension as you can see here:

img{_x000D_
  border: 1px solid #000;_x000D_
  transform:          rotate(270deg);_x000D_
  -ms-transform:      rotate(270deg);_x000D_
  -moz-transform:     rotate(270deg);_x000D_
  -webkit-transform:  rotate(270deg);_x000D_
  -o-transform:       rotate(270deg);_x000D_
}_x000D_
.imagetest{_x000D_
  overflow: hidden_x000D_
}

<article>_x000D_
<section class="photo">_x000D_
<div></div>_x000D_
<div class="imagetest">_x000D_
<img src="https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcSqVNRUwpfOwZ5n4kvVXea2VHd6QZGACVVaBOl5aJ2EGSG-WAIF" width=100%/>_x000D_
</div>_x000D_
</section>_x000D_
</article>

So, what I do is some calculations, in my example the picture is 455px width and 111px height and we have to add some margins based on these dimensions:

• left margin: (width - height)/2
• top margin: (height - width)/2

in CSS:

margin: calc((455px - 111px)/2) calc((111px - 455px)/2);

Result:

img{_x000D_
  border: 1px solid #000;_x000D_
  transform:          rotate(270deg);_x000D_
  -ms-transform:      rotate(270deg);_x000D_
  -moz-transform:     rotate(270deg);_x000D_
  -webkit-transform:  rotate(270deg);_x000D_
  -o-transform:       rotate(270deg);_x000D_
  /* 455 * 111 */_x000D_
  margin: calc((455px - 111px)/2) calc((111px - 455px)/2);_x000D_
}

<article>_x000D_
<section class="photo">_x000D_
<div></div>_x000D_
<div class="imagetest">_x000D_
<img src="https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcSqVNRUwpfOwZ5n4kvVXea2VHd6QZGACVVaBOl5aJ2EGSG-WAIF" />_x000D_
</div>_x000D_
</section>_x000D_
</article>

I hope it helps someone!

#div-name

{

  background-image: url('../images/background-art-main.jpg');
  background-position: top right 50px;
  background-repeat: no-repeat;
}

Here is the same solution (with some extra bonus code) in just one XML file:

<?xml version="1.0" encoding="utf-8"?>
<!--  res/drawable/edittext_rounded_corners.xml -->
<selector xmlns:android="http://schemas.android.com/apk/res/android">

<item android:state_pressed="true" android:state_focused="true">
    <shape>
        <solid android:color="#FF8000"/>
        <stroke
            android:width="2.3dp"
            android:color="#FF8000" />
         <corners
            android:radius="15dp" />
    </shape>
</item>

<item android:state_pressed="true" android:state_focused="false">
    <shape>
        <solid android:color="#FF8000"/>
        <stroke
            android:width="2.3dp"
            android:color="#FF8000" />      
        <corners
            android:radius="15dp" />       
    </shape>
</item>

<item android:state_pressed="false" android:state_focused="true">
    <shape>
        <solid android:color="#FFFFFF"/>
        <stroke
            android:width="2.3dp"
            android:color="#FF8000" />  
        <corners
            android:radius="15dp" />                          
    </shape>
</item>

<item android:state_pressed="false" android:state_focused="false">
    <shape>
        <gradient 
            android:startColor="#F2F2F2"
            android:centerColor="#FFFFFF"
            android:endColor="#FFFFFF"
            android:angle="270"
        />
        <stroke
            android:width="0.7dp"                
            android:color="#BDBDBD" /> 
        <corners
            android:radius="15dp" />            
    </shape>
</item>

<item android:state_enabled="true">
    <shape>
        <padding 
                android:left="4dp"
                android:top="4dp"
                android:right="4dp"
                android:bottom="4dp"
            />
    </shape>
</item>

</selector>

You then just set the background attribute to edittext_rounded_corners.xml file:

<EditText  android:id="@+id/editText_name"
      android:background="@drawable/edittext_rounded_corners"/>

So far, looking all the solution, none of them worked for me.

So I did it, with the help of alias in Linux

You set the alias as,

alias flutter='~/your/path/to/flutter/bin/./flutter'

Now, just type flutter doctor to see if it works.

To create alias permanently, See

just for clarification, for those wondering why rm and del.

rm .git/index.lock - on a unix/linux system
del .git/index.lock - on a windows cmd prompt

you could add -f to force the operation that works.

You may have made some new commits in the detached HEAD state. I believe if you do as other answers advise:

git checkout master
# or
git checkout -

then you may lose your commits!! Instead, you may want to do this:

# you are currently in detached HEAD state
git checkout -b commits-from-detached-head

and then merge commits-from-detached-head into whatever branch you want, so you don't lose the commits.

$('<input>').attr('type','hidden').appendTo('form');

To answer your second question:

$('<input>').attr({
    type: 'hidden',
    id: 'foo',
    name: 'bar'
}).appendTo('form');

You should use one of the System.Diagnostics.Process.Start() overloads. It's quite simple!

If you don't place the filename of the process you want to run (explorer.exe), the system will recognize it as a valid folder path and try to attach it to the already running Explorer process. In this case, if the folder is already open, Explorer will do nothing.

If you place the filename of the process (as you did), the system will try to run a new instance of the process, passing the second string as a parameter. If the string is a valid folder, it is opened on the newly created process, if not, the new process will do nothing.

I don't know how invalid folder paths are treated by the process in any case. Using System.IO.Directory.Exists() should be enough to ensure that.

favicon.ico is the icon of a website on the title bar of your website. Netbeans couldnt find the favicon.ico file in your website folder

if you dont want it, you can remove the line that is similar to this in your head section

 <link rel="shortcut icon" href="favicon.ico">

or if you want to use an icon for the title bar, you can use icon convertor to generate a .ico image and keep it in your website folder and use the above line in the head section

The Internationalization API supports getting the user timezone, and is supported in all current browsers.

console.log(Intl.DateTimeFormat().resolvedOptions().timeZone)

Keep in mind that on some older browser versions that support the Internationalization API, the timeZone property is set to undefined rather than the user’s timezone string. As best as I can tell, at the time of writing (July 2017) all current browsers except for IE11 will return the user timezone as a string.

If I want to drop a row which has let's say index x, I would do the following:

df = df[df.index != x]

If I would want to drop multiple indices (say these indices are in the list unwanted_indices), I would do:

desired_indices = [i for i in len(df.index) if i not in unwanted_indices]
desired_df = df.iloc[desired_indices]

After a lot of digging around I finally ended up downloading the source code of the recovery section of Android. Turns out you can actually send commands to the recovery.

 * The arguments which may be supplied in the recovery.command file:
 *   --send_intent=anystring - write the text out to recovery.intent
 *   --update_package=path - verify install an OTA package file
 *   --wipe_data - erase user data (and cache), then reboot
 *   --wipe_cache - wipe cache (but not user data), then reboot
 *   --set_encrypted_filesystem=on|off - enables / diasables encrypted fs

Those are the commands you can use according to the one I found but that might be different for modded files. So using adb you can do this:

adb shell
recovery --wipe_data

Using --wipe_data seemed to do what I was looking for which was handy although I have not fully tested this as of yet.

EDIT:

For anyone still using this topic, these commands may change based on which recovery you are using. If you are using Clockword recovery, these commands should still work. You can find other commands in /cache/recovery/command

For more information please see here: https://github.com/CyanogenMod/android_bootable_recovery/blob/cm-10.2/recovery.c

Since Java 8:

List<String> myList = map.keySet().stream().collect(Collectors.toList());

For another very late answer to another very old question:

The itertools recipes have a function that does this, using the seen set technique, but:

• Handles a standard key function.
• Uses no unseemly hacks.
• Optimizes the loop by pre-binding seen.add instead of looking it up N times. (f7 also does this, but some versions don't.)
• Optimizes the loop by using ifilterfalse, so you only have to loop over the unique elements in Python, instead of all of them. (You still iterate over all of them inside ifilterfalse, of course, but that's in C, and much faster.)

Is it actually faster than f7? It depends on your data, so you'll have to test it and see. If you want a list in the end, f7 uses a listcomp, and there's no way to do that here. (You can directly append instead of yielding, or you can feed the generator into the list function, but neither one can be as fast as the LIST_APPEND inside a listcomp.) At any rate, usually, squeezing out a few microseconds is not going to be as important as having an easily-understandable, reusable, already-written function that doesn't require DSU when you want to decorate.

As with all of the recipes, it's also available in more-iterools.

If you just want the no-key case, you can simplify it as:

def unique(iterable):
    seen = set()
    seen_add = seen.add
    for element in itertools.ifilterfalse(seen.__contains__, iterable):
        seen_add(element)
        yield element

I will do like....

(!DBNull.Value.Equals(dataSet.Tables[6].Rows[0]["_id"]))

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

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

This works well:

function test(el){
  el.childNodes.item("child").style.display = "none";
}

If the argument of item() function is an integer, the function will treat it as an index. If the argument is a string, then the function searches for name or ID of element.

I have used similar code for downloading logs from servers. I debug my code and discovered that implementation of URLConnection which is returned is sun.net.www.protocol.http.HttpURLConnection.

Abstract class java.net.URLConnection have two attributes connectTimeout and readTimeout and setters are in abstract class. Believe or not implementation sun.net.www.protocol.http.HttpURLConnection have same attributes connectTimeout and readTimeout without setters and attributes from implementation class are used in getInputStream method. So there is no use of setting connectTimeout and readTimeout because they are never used in getInputStream method. In my opinion this is bug in sun.net.www.protocol.http.HttpURLConnection implementation.

My solution for this was to use HttpClient and Get request.

Without using any other libraries:

import * as axios from "axios";

// Mock out all top level functions, such as get, put, delete and post:
jest.mock("axios");

// ...

test("good response", () => {
  axios.get.mockImplementation(() => Promise.resolve({ data: {...} }));
  // ...
});

test("bad response", () => {
  axios.get.mockImplementation(() => Promise.reject({ ... }));
  // ...
});

It is possible to specify the response code:

axios.get.mockImplementation(() => Promise.resolve({ status: 200, data: {...} }));

It is possible to change the mock based on the parameters:

axios.get.mockImplementation((url) => {
    if (url === 'www.example.com') {
        return Promise.resolve({ data: {...} });
    } else {
        //...
    }
});

Jest v23 introduced some syntactic sugar for mocking Promises:

axios.get.mockImplementation(() => Promise.resolve({ data: {...} }));

It can be simplified to

axios.get.mockResolvedValue({ data: {...} });

There is also an equivalent for rejected promises: mockRejectedValue.

Further Reading:

• Jest mocking documentation
• A GitHub discussion that explains about the scope of the jest.mock("axios") line.
• Another answer of mine which addresses applying the techniques above to Axios request interceptors.

I agree with John on wrapping the sleep function. You could also use this wrapped sleep function to implement a pause function in lua (which would simply sleep then check to see if a certain condition has changed every so often). An alternative is to use hooks.

I'm not exactly sure what you mean with your third bulletpoint (don't commands usually complete before the next is executed?) but hooks may be able to help with this also.

See: Question: How can I end a Lua thread cleanly? for an example of using hooks.

You can use concat:

In [11]: pd.concat([df1['c'], df2['c']], axis=1, keys=['df1', 'df2'])
Out[11]: 
                 df1       df2
2014-01-01       NaN -0.978535
2014-01-02 -0.106510 -0.519239
2014-01-03 -0.846100 -0.313153
2014-01-04 -0.014253 -1.040702
2014-01-05  0.315156 -0.329967
2014-01-06 -0.510577 -0.940901
2014-01-07       NaN -0.024608
2014-01-08       NaN -1.791899

[8 rows x 2 columns]

The axis argument determines the way the DataFrames are stacked:

df1 = pd.DataFrame([1, 2, 3])
df2 = pd.DataFrame(['a', 'b', 'c'])

pd.concat([df1, df2], axis=0)
   0
0  1
1  2
2  3
0  a
1  b
2  c

pd.concat([df1, df2], axis=1)

   0  0
0  1  a
1  2  b
2  3  c

If you are trying to reference a commit in another repo than the issue is in, you can prefix the commit short hash with reponame@.

Suppose your commit is in the repo named dev, and the GitLab issue is in the repo named test. You can leave a comment on the issue and reference the commit by dev@e9c11f0a (where e9c11f0a is the first 8 letters of the sha hash of the commit you want to link to) if that makes sense.

It takes keyword arguments for the variables:

url_for('add', variable=foo)

You can update the value like following

   auto itr = m.find('ch'); 
     if (itr != m.end()){
           (*itr).second = 98;
     }

First navigate to below location and open it in a text editor

<TOMCAT_HOME>/conf/tomcat-users.xml

For tomcat 7, Add the following xml code somewhere between <tomcat-users>

  <role rolename="manager-gui"/>
  <user username="username" password="password" roles="manager-gui"/>

Now restart the tomcat server.

To get around the access denied issue, I started SSMS as administrator and that allowed me to attach a database from my local drive. The database was created in another SQL and windows instance.

or even more better, you can put this code in a class file

using System;
using System.IO;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Windows.Forms;

internal class OpenFolderDialog : IDisposable {

    /// <summary>
    /// Gets/sets folder in which dialog will be open.
    /// </summary>
    public string InitialFolder { get; set; }

    /// <summary>
    /// Gets/sets directory in which dialog will be open if there is no recent directory available.
    /// </summary>
    public string DefaultFolder { get; set; }

    /// <summary>
    /// Gets selected folder.
    /// </summary>
    public string Folder { get; private set; }


    internal DialogResult ShowDialog(IWin32Window owner) {
        if (Environment.OSVersion.Version.Major >= 6) {
            return ShowVistaDialog(owner);
        } else {
            return ShowLegacyDialog(owner);
        }
    }

    private DialogResult ShowVistaDialog(IWin32Window owner) {
        var frm = (NativeMethods.IFileDialog)(new NativeMethods.FileOpenDialogRCW());
        uint options;
        frm.GetOptions(out options);
        options |= NativeMethods.FOS_PICKFOLDERS | NativeMethods.FOS_FORCEFILESYSTEM | NativeMethods.FOS_NOVALIDATE | NativeMethods.FOS_NOTESTFILECREATE | NativeMethods.FOS_DONTADDTORECENT;
        frm.SetOptions(options);
        if (this.InitialFolder != null) {
            NativeMethods.IShellItem directoryShellItem;
            var riid = new Guid("43826D1E-E718-42EE-BC55-A1E261C37BFE"); //IShellItem
            if (NativeMethods.SHCreateItemFromParsingName(this.InitialFolder, IntPtr.Zero, ref riid, out directoryShellItem) == NativeMethods.S_OK) {
                frm.SetFolder(directoryShellItem);
            }
        }
        if (this.DefaultFolder != null) {
            NativeMethods.IShellItem directoryShellItem;
            var riid = new Guid("43826D1E-E718-42EE-BC55-A1E261C37BFE"); //IShellItem
            if (NativeMethods.SHCreateItemFromParsingName(this.DefaultFolder, IntPtr.Zero, ref riid, out directoryShellItem) == NativeMethods.S_OK) {
                frm.SetDefaultFolder(directoryShellItem);
            }
        }

        if (frm.Show(owner.Handle) == NativeMethods.S_OK) {
            NativeMethods.IShellItem shellItem;
            if (frm.GetResult(out shellItem) == NativeMethods.S_OK) {
                IntPtr pszString;
                if (shellItem.GetDisplayName(NativeMethods.SIGDN_FILESYSPATH, out pszString) == NativeMethods.S_OK) {
                    if (pszString != IntPtr.Zero) {
                        try {
                            this.Folder = Marshal.PtrToStringAuto(pszString);
                            return DialogResult.OK;
                        } finally {
                            Marshal.FreeCoTaskMem(pszString);
                        }
                    }
                }
            }
        }
        return DialogResult.Cancel;
    }

    private DialogResult ShowLegacyDialog(IWin32Window owner) {
        using (var frm = new SaveFileDialog()) {
            frm.CheckFileExists = false;
            frm.CheckPathExists = true;
            frm.CreatePrompt = false;
            frm.Filter = "|" + Guid.Empty.ToString();
            frm.FileName = "any";
            if (this.InitialFolder != null) { frm.InitialDirectory = this.InitialFolder; }
            frm.OverwritePrompt = false;
            frm.Title = "Select Folder";
            frm.ValidateNames = false;
            if (frm.ShowDialog(owner) == DialogResult.OK) {
                this.Folder = Path.GetDirectoryName(frm.FileName);
                return DialogResult.OK;
            } else {
                return DialogResult.Cancel;
            }
        }
    }


    public void Dispose() { } //just to have possibility of Using statement.

}

internal static class NativeMethods {

    #region Constants

    public const uint FOS_PICKFOLDERS = 0x00000020;
    public const uint FOS_FORCEFILESYSTEM = 0x00000040;
    public const uint FOS_NOVALIDATE = 0x00000100;
    public const uint FOS_NOTESTFILECREATE = 0x00010000;
    public const uint FOS_DONTADDTORECENT = 0x02000000;

    public const uint S_OK = 0x0000;

    public const uint SIGDN_FILESYSPATH = 0x80058000;

    #endregion


    #region COM

    [ComImport, ClassInterface(ClassInterfaceType.None), TypeLibType(TypeLibTypeFlags.FCanCreate), Guid("DC1C5A9C-E88A-4DDE-A5A1-60F82A20AEF7")]
    internal class FileOpenDialogRCW { }


    [ComImport(), Guid("42F85136-DB7E-439C-85F1-E4075D135FC8"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    internal interface IFileDialog {
        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
        [PreserveSig()]
        uint Show([In, Optional] IntPtr hwndOwner); //IModalWindow 


        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
        uint SetFileTypes([In] uint cFileTypes, [In, MarshalAs(UnmanagedType.LPArray)] IntPtr rgFilterSpec);

        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
        uint SetFileTypeIndex([In] uint iFileType);

        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
        uint GetFileTypeIndex(out uint piFileType);

        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
        uint Advise([In, MarshalAs(UnmanagedType.Interface)] IntPtr pfde, out uint pdwCookie);

        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
        uint Unadvise([In] uint dwCookie);

        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
        uint SetOptions([In] uint fos);

        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
        uint GetOptions(out uint fos);

        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
        void SetDefaultFolder([In, MarshalAs(UnmanagedType.Interface)] IShellItem psi);

        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
        uint SetFolder([In, MarshalAs(UnmanagedType.Interface)] IShellItem psi);

        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
        uint GetFolder([MarshalAs(UnmanagedType.Interface)] out IShellItem ppsi);

        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
        uint GetCurrentSelection([MarshalAs(UnmanagedType.Interface)] out IShellItem ppsi);

        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
        uint SetFileName([In, MarshalAs(UnmanagedType.LPWStr)] string pszName);

        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
        uint GetFileName([MarshalAs(UnmanagedType.LPWStr)] out string pszName);

        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
        uint SetTitle([In, MarshalAs(UnmanagedType.LPWStr)] string pszTitle);

        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
        uint SetOkButtonLabel([In, MarshalAs(UnmanagedType.LPWStr)] string pszText);

        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
        uint SetFileNameLabel([In, MarshalAs(UnmanagedType.LPWStr)] string pszLabel);

        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
        uint GetResult([MarshalAs(UnmanagedType.Interface)] out IShellItem ppsi);

        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
        uint AddPlace([In, MarshalAs(UnmanagedType.Interface)] IShellItem psi, uint fdap);

        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
        uint SetDefaultExtension([In, MarshalAs(UnmanagedType.LPWStr)] string pszDefaultExtension);

        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
        uint Close([MarshalAs(UnmanagedType.Error)] uint hr);

        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
        uint SetClientGuid([In] ref Guid guid);

        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
        uint ClearClientData();

        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
        uint SetFilter([MarshalAs(UnmanagedType.Interface)] IntPtr pFilter);
    }


    [ComImport, Guid("43826D1E-E718-42EE-BC55-A1E261C37BFE"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    internal interface IShellItem {
        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
        uint BindToHandler([In] IntPtr pbc, [In] ref Guid rbhid, [In] ref Guid riid, [Out, MarshalAs(UnmanagedType.Interface)] out IntPtr ppvOut);

        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
        uint GetParent([MarshalAs(UnmanagedType.Interface)] out IShellItem ppsi);

        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
        uint GetDisplayName([In] uint sigdnName, out IntPtr ppszName);

        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
        uint GetAttributes([In] uint sfgaoMask, out uint psfgaoAttribs);

        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
        uint Compare([In, MarshalAs(UnmanagedType.Interface)] IShellItem psi, [In] uint hint, out int piOrder);
    }

    #endregion


    [DllImport("shell32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
    internal static extern int SHCreateItemFromParsingName([MarshalAs(UnmanagedType.LPWStr)] string pszPath, IntPtr pbc, ref Guid riid, [MarshalAs(UnmanagedType.Interface)] out IShellItem ppv);

}

And use it like this

using (var frm = new OpenFolderDialog()) {
                if (frm.ShowDialog(this)== DialogResult.OK) {
                    MessageBox.Show(this, frm.Folder);
                }
            }

Or rather than to declare a function, simply:

setTimeout(() => {
    console.log('hello');
}, 1000);

Unless you are 100% certain of your inputs, which is rarely the case, you should use Double.TryParse.

Convert.ToDouble will throw an exception on non-numbers
Double.Parse will throw an exception on non-numbers or null
Double.TryParse will return false or 0 on any of the above without generating an exception.

The speed of the parse becomes secondary when you throw an exception because there is not much slower than an exception.

Created elegant Kotlin way with extension:

fun TextView.setClickableText(text: Spanned,
                              clickableText: String,
                              @ColorInt clickableColor: Int,
                              clickListener: () -> Unit) {
    val spannableString = SpannableString(text)

    val startingPosition: Int = text.indexOf(clickableText)

    if (startingPosition > -1) {
        val clickableSpan: ClickableSpan = object : ClickableSpan() {
            override fun onClick(textView: View) {
                clickListener()
            }

            override fun updateDrawState(textPaint: TextPaint) {
                super.updateDrawState(textPaint)
                textPaint.isUnderlineText = false
            }
        }

        val endingPosition: Int = startingPosition + clickableText.length
        spannableString.setSpan(clickableSpan, startingPosition,
                endingPosition, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE)
        spannableString.setSpan(ForegroundColorSpan(clickableColor), startingPosition,
                endingPosition, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE)
        movementMethod = LinkMovementMethod.getInstance()
        highlightColor = Color.TRANSPARENT
    }

    setText(spannableString)
}

function isNumberKey(evt)
{
    var charCode = (evt.which) ? evt.which : evt.keyCode;

    if(charCode==8 || charCode==13|| charCode==99|| charCode==118 || charCode==46)
    {    
        return true;  
    }

    if (charCode > 31 && (charCode < 48 || charCode > 57))
    {   
        return false; 
    }
    return true;
}

It will allow only numeric and will let you put "." for decimal.

If you want just one row, you can use a calculated offset derived from count.

select * from table_name limit 1
offset floor(random() * (select count(*) from table_name));

@ExtendWith(SpringExtension.class)    // @RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(initializers = ConfigDataApplicationContextInitializer.class)

May that could help. The key is ConfigDataApplicationContextInitializer get all props datas

You could also use DateTime.TryParseExact() as below if you are unsure of the input value.

DateTime outputDateTimeValue;
if (DateTime.TryParseExact("2009-05-08 14:40:52,531", "yyyy-MM-dd HH:mm:ss,fff", System.Globalization.CultureInfo.InvariantCulture, System.Globalization.DateTimeStyles.None, out outputDateTimeValue))
{
    return outputDateTimeValue;
}
else
{
    // Handle the fact that parse did not succeed
}

It is simpler just to run an exact copy like below to put the copy in as the last sheet

Sub Test()
Dim ws1 As Worksheet
Set ws1 = ThisWorkbook.Worksheets("Master")
ws1.Copy ThisWorkbook.Sheets(Sheets.Count)
End Sub

This is a way of doing the trick.

f = open("path_to_file", "r")
contents = f.readlines()
f.close()

contents.insert(index, value)

f = open("path_to_file", "w")
contents = "".join(contents)
f.write(contents)
f.close()

"index" and "value" are the line and value of your choice, lines starting from 0.

Such hack like "tabIndex=-1" not work for me with Chrome v53.

This is which works for chrome, and most browsers:

function removeTabIndex(element) {_x000D_
    element.removeAttribute('tabindex');_x000D_
}

<input tabIndex="1" />_x000D_
<input tabIndex="2" id="notabindex" />_x000D_
<input tabIndex="3" />_x000D_
<button tabIndex="4" onclick="removeTabIndex(document.getElementById('notabindex'))">Remove tabindex</button>

Pass cls parameter into @classmethod to resolve this problem.

@classmethod
def test(cls):
    return ''

spool "D:\test\test.txt"

select  
  a.ename  
from  
  employee a  
inner join department b  
on  
(  
  a.dept_id = b.dept_id  
)  
;  
spool off  

This query will spool the sql result in D:\test\test.txt

You can set the line height on the text, for example within the active class:

.active {
    ...
    line-height: 2em;
    ....
}

This is the syntax you need:

CASE WHEN countries LIKE '%'+@selCountry+'%' THEN 'national' ELSE 'regional' END

Although, as per your original problem, I'd solve it differently, splitting the content of @selcountry int a table form and joining to it.

Yes! This is possible.

The { } syntax of the collection initializer works on any IEnumerable type which has an Add method with the correct amount of arguments. Without bothering how that works under the covers, that means you can simply extend from List<T>, add a custom Add method to initialize your T, and you are done!

public class TupleList<T1, T2> : List<Tuple<T1, T2>>
{
    public void Add( T1 item, T2 item2 )
    {
        Add( new Tuple<T1, T2>( item, item2 ) );
    }
}

This allows you to do the following:

var groceryList = new TupleList<int, string>
{
    { 1, "kiwi" },
    { 5, "apples" },
    { 3, "potatoes" },
    { 1, "tomato" }
};

Tweak the below to suit your specific requirements:

if not exists (select
                     column_name
               from
                     INFORMATION_SCHEMA.columns
               where
                     table_name = 'MyTable'
                     and column_name = 'MyColumn')
    alter table MyTable add MyColumn int

Edit to deal with edit to question: That should work - take a careful look over your code for stupid mistakes; are you querying INFORMATION_SCHEMA on the same database as your insert is being applied to for example? Do you have a typo in your table/column name in either statement?

An alternative, you can also use fopen

$params = array('http' => array(
    'method' => 'POST',
    'content' => 'toto=1&tata=2'
));

$ctx = stream_context_create($params);
$fp = @fopen($sUrl, 'rb', false, $ctx);
if (!$fp)
{
    throw new Exception("Problem with $sUrl, $php_errormsg");
}

$response = @stream_get_contents($fp);
if ($response === false) 
{
    throw new Exception("Problem reading data from $sUrl, $php_errormsg");
}

One of the options is to use the Javascript.

Here is a quick reference where you can start from.

Javascript alert messages

Here is a nice explanation of update operation with some examples. Although it is Postgres site, but the SQL queries are valid for the other DBs, too. The following examples are intuitive to understand.

-- Update contact names in an accounts table to match the currently assigned salesmen:

UPDATE accounts SET (contact_first_name, contact_last_name) =
    (SELECT first_name, last_name FROM salesmen
     WHERE salesmen.id = accounts.sales_id);

-- A similar result could be accomplished with a join:

UPDATE accounts SET contact_first_name = first_name,
                    contact_last_name = last_name
  FROM salesmen WHERE salesmen.id = accounts.sales_id;

However, the second query may give unexpected results if salesmen.id is not a unique key, whereas the first query is guaranteed to raise an error if there are multiple id matches. Also, if there is no match for a particular accounts.sales_id entry, the first query will set the corresponding name fields to NULL, whereas the second query will not update that row at all.

Hence for the given example, the most reliable query is like the following.

UPDATE tempDataView SET (marks) =
    (SELECT marks FROM tempData
     WHERE tempDataView.Name = tempData.Name);

You can save an image as 'png' and use the python imaging library (PIL) to convert this file to 'jpg':

import Image
import matplotlib.pyplot as plt

plt.plot(range(10))
plt.savefig('testplot.png')
Image.open('testplot.png').save('testplot.jpg','JPEG')

The original:

The JPEG image:

A compact implementation using Java TreeMap and recursion:

import java.util.TreeMap;

public class RomanNumber {

    private final static TreeMap<Integer, String> map = new TreeMap<Integer, String>();

    static {

        map.put(1000, "M");
        map.put(900, "CM");
        map.put(500, "D");
        map.put(400, "CD");
        map.put(100, "C");
        map.put(90, "XC");
        map.put(50, "L");
        map.put(40, "XL");
        map.put(10, "X");
        map.put(9, "IX");
        map.put(5, "V");
        map.put(4, "IV");
        map.put(1, "I");

    }

    public final static String toRoman(int number) {
        int l =  map.floorKey(number);
        if ( number == l ) {
            return map.get(number);
        }
        return map.get(l) + toRoman(number-l);
    }

}

Testing:

public void testRomanConversion() {

    for (int i = 1; i<= 100; i++) {
        System.out.println(i+"\t =\t "+RomanNumber.toRoman(i));
    }

}

If you want the number of threads per user in a linux system then you should use:

ps -eLf | grep <USER> | awk '{ num += $6 } END { print num }'

where as <USER> use the desired user name.

This seems to work just fine:

import sys
print sys._getframe().f_back.f_code.co_name

Just in case if someone may need...

My requirement was:

• SSL enabled
• Custom domain
• Running in (default) port: 443

Setup this URL in IISExpress: http://my.customdomain.com

To setup this I used following settings:

Project Url: http://localhost:57400

Start URL: http://my.customdomain.com

/.vs/{solution-name}/config/applicationhost.config settings:

<site ...>
    <application>
        ...
    </application>
    <bindings>
        <binding protocol="http" bindingInformation="*:57400:" />
        <binding protocol="https" bindingInformation="*:443:my.customdomain.com" />
    </bindings>
</site>

Here.. Works perfectly for me

.modal-body { 
    max-height:500px; 
    overflow-y:auto;
}

Just another method to deal with this problem. Not the most short, but it is efficient and gets the job done.

/**
 * Creates a comma-separated list of values from given collection.
 * 
 * @param <T> Value type.
 * @param values Value collection.
 * @return Comma-separated String of values.
 */
public <T> String toParameterList(Collection<T> values) {
   if (values == null || values.isEmpty()) {
      return ""; // Depending on how you want to deal with this case...
   }
   StringBuilder result = new StringBuilder();
   Iterator<T> i = values.iterator();
   result.append(i.next().toString());
   while (i.hasNext()) {
      result.append(",").append(i.next().toString());
   }
   return result.toString();
}

Session_unset(); only destroys the session variables. To end the session there is another function called session_destroy(); which also destroys the session .

update :

In order to kill the session altogether, like to log the user out, the session id must also be unset. If a cookie is used to propagate the session id (default behavior), then the session cookie must be deleted. setcookie() may be used for that

alternatively you can retrieve DOM properties with .prop

here is sample code for select box

if( ctrl.prop('type') == 'select-one' ) { // for single select }

if( ctrl.prop('type') == 'select-multiple' ) { // for multi select }

for textbox

  if( ctrl.prop('type') == 'text' ) { // for text box }

I had the exact error when deleting a file. It was a Windows Service running under a Service Account which was unable to delete a .pdf document from a Shared Folder even though it had Full Control of the folder.

What worked for me was navigating to the Security tab of the Shared Folder > Advanced > Share > Add.

I then added the service account to the administrators group, applied the changes and the service account was then able to perform all operations on all files within that folder.

As an aside, an alternative way to solve this problem is to not use the filter chain and instead build your own interceptor component, perhaps using aspects, which can operate on the parsed request body. It will also likely be more efficient as you are only converting the request InputStream into your own model object once.

However, I still think it's reasonable to want to read the request body more than once particularly as the request moves through the filter chain. I would typically use filter chains for certain operations that I want to keep at the HTTP layer, decoupled from the service components.

As suggested by Will Hartung I achieved this by extending HttpServletRequestWrapper, consuming the request InputStream and essentially caching the bytes.

public class MultiReadHttpServletRequest extends HttpServletRequestWrapper {
  private ByteArrayOutputStream cachedBytes;

  public MultiReadHttpServletRequest(HttpServletRequest request) {
    super(request);
  }

  @Override
  public ServletInputStream getInputStream() throws IOException {
    if (cachedBytes == null)
      cacheInputStream();

      return new CachedServletInputStream();
  }

  @Override
  public BufferedReader getReader() throws IOException{
    return new BufferedReader(new InputStreamReader(getInputStream()));
  }

  private void cacheInputStream() throws IOException {
    /* Cache the inputstream in order to read it multiple times. For
     * convenience, I use apache.commons IOUtils
     */
    cachedBytes = new ByteArrayOutputStream();
    IOUtils.copy(super.getInputStream(), cachedBytes);
  }

  /* An inputstream which reads the cached request body */
  public class CachedServletInputStream extends ServletInputStream {
    private ByteArrayInputStream input;

    public CachedServletInputStream() {
      /* create a new input stream from the cached request body */
      input = new ByteArrayInputStream(cachedBytes.toByteArray());
    }

    @Override
    public int read() throws IOException {
      return input.read();
    }
  }
}

Now the request body can be read more than once by wrapping the original request before passing it through the filter chain:

public class MyFilter implements Filter {
  @Override
  public void doFilter(ServletRequest request, ServletResponse response,
        FilterChain chain) throws IOException, ServletException {

    /* wrap the request in order to read the inputstream multiple times */
    MultiReadHttpServletRequest multiReadRequest = new MultiReadHttpServletRequest((HttpServletRequest) request);

    /* here I read the inputstream and do my thing with it; when I pass the
     * wrapped request through the filter chain, the rest of the filters, and
     * request handlers may read the cached inputstream
     */
    doMyThing(multiReadRequest.getInputStream());
    //OR
    anotherUsage(multiReadRequest.getReader());
    chain.doFilter(multiReadRequest, response);
  }
}

This solution will also allow you to read the request body multiple times via the getParameterXXX methods because the underlying call is getInputStream(), which will of course read the cached request InputStream.

Edit

For newer version of ServletInputStream interface. You need to provide implementation of few more methods like isReady, setReadListener etc. Refer this question as provided in comment below.

Instead of

Scanner in = new Scanner(System.in);
String question;
question = in.next();

Type in

Scanner in = new Scanner(System.in);
String question;
question = in.nextLine();

This should be able to take spaces as input.

class="mb-0"

m - sets margin

b - sets bottom margin or padding

0 - sets 0 margin or padding

CSS class

.mb-0{
       margin-bottom: 0
     }

select CONCAT(Name, '(',substr(occupation, 1, 1), ')') AS f1
from OCCUPATIONS
union
select temp.str AS f1 from 
(select count(occupation) AS counts, occupation, concat('There are a total of ' ,count(occupation) ,' ', lower(occupation),'s.') As str  from OCCUPATIONS group by occupation order by counts ASC, occupation ASC
 ) As temp
 order by f1

In case someone is interested in dplyr solution, it's very intuitive:

dt <- dt %>%
  slice(1:4)

I recently run into the same problem. I solved it by implementing my own ImageView class.

Here is my Kotlin implementation:

class MyImageView(context: Context): ImageView(context) {
    private var currentDrawableId: Int? = null

    override fun setImageResource(resId: Int) {
        super.setImageResource(resId)
        currentDrawableId = resId
    }

    fun getDrawableId() {
        return currentDrawableId
    }

    fun compareCurrentDrawable(toDrawableId: Int?): Boolean {
        if (toDrawableId == null || currentDrawableId != toDrawableId) {
            return false
        }

        return true
    }

}

In my understanding you want to match a non-blank and non-empty string, so the top answer is doing the opposite. I suggest:

(.|\s)*\S(.|\s)*

- this matches any string containing at least one non-whitespace character (the \S in the middle). It can be preceded and followed by anything, any char or whitespace sequence (including new lines) - (.|\s)*.

You can try it with explanation on https://regex101.com/.

XML, or traversing anything that is a tree. Although, to be honest, I pretty much never use recursion in my job.

Well, this is really not very complicated. I have strong suspicion you didn't even try. What you do is that you pick the first value, save it in the variable, and then, within a for loop, compare all subsequent values with the first one.
I intentionally didn't share any code. Find how for is used and how variables are compared.

Make sure the files are writeable (not read-only), and that your user has write permissions on them.

Also, on most recent systems, the Program Files directory is read-only. Try to place the files in another directory.

Since stop is boolean you can change that part to:

//...
if(stop) // Or to: if (stop == true)
{
   sb.append("y");
   getWhoozitYs();
}
return sb.toString();
//...

The first answer you gave uses what is known as ANSI join syntax, the other is valid and will work in any relational database.

I agree with grom that you should use ANSI join syntax. As they said, the main reason is for clarity. Rather than having a where clause with lots of predicates, some of which join tables and others restricting the rows returned with the ANSI join syntax you are making it blindingly clear which conditions are being used to join your tables and which are being used to restrict the results.

As of 30Jul, 2018 to fix the above issue, one can configure the java version used within maven to any up to JDK/11 and make use of the maven-compiler-plugin:3.8.0 to specify a release of either 9,10,11 without any explicit dependencies.

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <version>3.8.0</version>
    <configuration>
        <release>11</release>  <!--or <release>10</release>-->
    </configuration>
</plugin>

Note:- The default value for source/target has been lifted from 1.5 to 1.6 with this version. -- release notes.

Edit [30.12.2018]

In fact, you can make use of the same version of maven-compiler-plugin while compiling the code against JDK/12 as well.

More details and a sample configuration in how to Compile and execute a JDK preview feature with Maven.

You have to use value attribute to get its value

<input type="text" name="FirstName" value="First Name" />

try -

var text = $('#DynamicValueAssignedHere').find('input[name="FirstName"]').val();

Make sure you have added your module to the settings.gradle file:

include ':app'
include ':your-module'

Just use That.Its Easy.

<script language="javascript" type="text/javascript">
     var images = new Array()
     images[0] = "img1.jpg";
     images[1] = "img2.jpg";
     images[2] = "img3.jpg";
     setInterval("changeImage()", 30000);
     var x=0;

     function changeImage()
     {
                document.getElementById("img").src=images[x]
                x++;
                if (images.length == x) 
                {
                    x = 0;
                }
     }
</script>

And in Body Write this Code:-

<img id="img" src="imgstart.jpg">

Here is some code I wrote to flatten an object I was working with. It creates a new class that takes every nested field and brings it into the first layer. You could modify it to unflatten by remembering the original placement of the keys. It also assumes the keys are unique even across nested objects. Hope it helps.

class JSONFlattener {
    ojson = {}
    flattenedjson = {}

    constructor(original_json) {
        this.ojson = original_json
        this.flattenedjson = {}
        this.flatten()
    }

    flatten() {
        Object.keys(this.ojson).forEach(function(key){
            if (this.ojson[key] == null) {

            } else if (this.ojson[key].constructor == ({}).constructor) {
                this.combine(new JSONFlattener(this.ojson[key]).returnJSON())
            } else {
                this.flattenedjson[key] = this.ojson[key]
            }
        }, this)        
    }

    combine(new_json) {
        //assumes new_json is a flat array
        Object.keys(new_json).forEach(function(key){
            if (!this.flattenedjson.hasOwnProperty(key)) {
                this.flattenedjson[key] = new_json[key]
            } else {
                console.log(key+" is a duplicate key")
            }
        }, this)
    }

    returnJSON() {
        return this.flattenedjson
    }
}

console.log(new JSONFlattener(dad_dictionary).returnJSON())

As an example, it converts

nested_json = {
    "a": {
        "b": {
            "c": {
                "d": {
                    "a": 0
                }
            }
        }
    },
    "z": {
        "b":1
    },
    "d": {
        "c": {
            "c": 2
        }
    }
}

into

{ a: 0, b: 1, c: 2 }

sudo apt-get remove docker docker-engine docker.io containerd runc
sudo rm -rf /var/lib/docker
sudo apt-get autoclean
sudo apt-get update

There is an error in the example.... if you use it as written, the following error occurs:

< type 'exceptions.Exception' >: 'dict' object has no attribute 'render_context'

You will need to add the following import:

from django.template import Context

and change the dictionary to be:

d = Context({ 'username': username })

See http://docs.djangoproject.com/en/1.2/ref/templates/api/#rendering-a-context

This PYTHONPATH variable needs to be set for ArcPY when ArcGIS Desktop is installed.

PYTHONPATH=C:\arcgis\bin (your ArcGIS home bin)

For some reason it never was set when I used the installer on a Windows 7 32-bit system.

Walk of shame:

The connection string was pointing at the live database. The error message was completely accurate - the stored procedure was only present in the dev DB. Thanks to all who provided excellent answers, and my apologies for wasting your time.

Yes you can use the ?GetValue???s method:

var values = Enum.GetValues(typeof(Foos));

Or the typed version:

var values = Enum.GetValues(typeof(Foos)).Cast<Foos>();

I long ago added a helper function to my private library for just such an occasion:

public static class EnumUtil {
    public static IEnumerable<T> GetValues<T>() {
        return Enum.GetValues(typeof(T)).Cast<T>();
    }
}

Usage:

var values = EnumUtil.GetValues<Foos>();

Other way it's execute this one:

echo 'execfile("/path_to/myscript.py")' | python manage.py shell --settings=config.base

This is working on Python2.7 and Django1.9

import { Route, Redirect } from "react-router-dom";

class App extends Component {
  render() {
    return (
      <div>
        <Route path='/'>
          <Redirect to="/something" />
        </Route>
//rest of code here

this will make it so that when you load up the server on local host it will re direct you to /something

Warning: mysql_* extension is deprecated as of PHP 5.5.0, and has been removed as of PHP 7.0.0. Instead, either the mysqli or PDO_MySQL extension should be used. See also the MySQL API Overview for further help while choosing a MySQL API.
Whenever possible, importing a file to MySQL should be delegated to MySQL client.

I have got another way to do this, try this

<?php

// Name of the file
$filename = 'churc.sql';
// MySQL host
$mysql_host = 'localhost';
// MySQL username
$mysql_username = 'root';
// MySQL password
$mysql_password = '';
// Database name
$mysql_database = 'dump';

// Connect to MySQL server
mysql_connect($mysql_host, $mysql_username, $mysql_password) or die('Error connecting to MySQL server: ' . mysql_error());
// Select database
mysql_select_db($mysql_database) or die('Error selecting MySQL database: ' . mysql_error());

// Temporary variable, used to store current query
$templine = '';
// Read in entire file
$lines = file($filename);
// Loop through each line
foreach ($lines as $line)
{
// Skip it if it's a comment
if (substr($line, 0, 2) == '--' || $line == '')
    continue;

// Add this line to the current segment
$templine .= $line;
// If it has a semicolon at the end, it's the end of the query
if (substr(trim($line), -1, 1) == ';')
{
    // Perform the query
    mysql_query($templine) or print('Error performing query \'<strong>' . $templine . '\': ' . mysql_error() . '<br /><br />');
    // Reset temp variable to empty
    $templine = '';
}
}
 echo "Tables imported successfully";
?>

This is working for me

Using moment.js, you can use keepOffset parameter of toISOString:

toISOString(keepOffset?: boolean): string;

moment().toISOString(true)

After five years, I can see this is still a very relevant subject. Somewhat mirroring leucos's answer which I find the best in my case, using ansible tools only (without any centralised authentication, tokens or whatever). This assumes you have the same username and the same public key on all servers. If you don't, of course you'd need to be more specific and add the corresponding variables next to the hosts:

[all:vars]
ansible_ssh_user=ansible
ansible_ssh_private_key_file=home/user/.ssh/mykey
[group]
192.168.0.50 ansible_sudo_pass='{{ myserver_sudo }}'

ansible-vault create mypasswd.yml
ansible-vault edit mypasswd.yml

Add:

myserver_sudo: mysecretpassword

Then:

ansible-playbook -i inv.ini my_role.yml --ask-vault --extra-vars '@passwd.yml'

At least this way you don't have to write more the variables which point to the passwords.

At some point, I suppose you will add your programatically created LinearLayout to some root layout that you defined in .xml. This is just a suggestion of mine and probably one of many solutions, but it works: Simply set an ID for the programatically created layout, and add it to the root layout that you defined in .xml, and then use the set ID to add the Fragment.

It could look like this:

LinearLayout rowLayout = new LinearLayout();
rowLayout.setId(whateveryouwantasid);
// add rowLayout to the root layout somewhere here

FragmentManager fragMan = getFragmentManager();
FragmentTransaction fragTransaction = fragMan.beginTransaction();   

Fragment myFrag = new ImageFragment();
fragTransaction.add(rowLayout.getId(), myFrag , "fragment" + fragCount);
fragTransaction.commit();

Simply choose whatever Integer value you want for the ID:

rowLayout.setId(12345);

If you are using the above line of code not just once, it would probably be smart to figure out a way to create unique-IDs, in order to avoid duplicates.

UPDATE:

Here is the full code of how it should be done: (this code is tested and works) I am adding two Fragments to a LinearLayout with horizontal orientation, resulting in the Fragments being aligned next to each other. Please also be aware, that I used a fixed height and width of 200dp, so that one Fragment does not use the full screen as it would with "match_parent".

MainActivity.java:

public class MainActivity extends Activity {

    @SuppressLint("NewApi")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);     

        LinearLayout fragContainer = (LinearLayout) findViewById(R.id.llFragmentContainer);

        LinearLayout ll = new LinearLayout(this);
        ll.setOrientation(LinearLayout.HORIZONTAL);

        ll.setId(12345);

        getFragmentManager().beginTransaction().add(ll.getId(), TestFragment.newInstance("I am frag 1"), "someTag1").commit();
        getFragmentManager().beginTransaction().add(ll.getId(), TestFragment.newInstance("I am frag 2"), "someTag2").commit();

        fragContainer.addView(ll);
    }
}

TestFragment.java:

public class TestFragment extends Fragment {

    public static TestFragment newInstance(String text) {

        TestFragment f = new TestFragment();

        Bundle b = new Bundle();
        b.putString("text", text);
        f.setArguments(b);
        return f;
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

        View v =  inflater.inflate(R.layout.fragment, container, false);

        ((TextView) v.findViewById(R.id.tvFragText)).setText(getArguments().getString("text"));     
        return v;
    }
}

activity_main.xml:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/rlMain"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="5dp"
    tools:context=".MainActivity" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world" />

    <LinearLayout
        android:id="@+id/llFragmentContainer"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_alignLeft="@+id/textView1"
        android:layout_below="@+id/textView1"
        android:layout_marginTop="19dp"
        android:orientation="vertical" >
    </LinearLayout>
</RelativeLayout>

fragment.xml:

  <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="200dp"
    android:layout_height="200dp" >

    <TextView
        android:id="@+id/tvFragText"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:text="" />

</RelativeLayout>

And this is the result of the above code: (the two Fragments are aligned next to each other)

I had the same problem. I solve it when I convert string to factor. In your case, check the class of variable and check if they are numeric and 'train and test' should be factor.

Per RVM's troubleshooting documentation "How do I completely clean out all traces of RVM from my system, including for system wide installs?":

Here is a custom script which we name as 'cleanout-rvm'. While you can definitely use rvm implode as a regular user or rvmsudo rvm implode for a system wide install, this script is useful as it steps completely outside of RVM and cleans out RVM without using RVM itself, leaving no traces.

#!/bin/bash
/usr/bin/sudo rm -rf $HOME/.rvm $HOME/.rvmrc /etc/rvmrc /etc/profile.d/rvm.sh /usr/local/rvm /usr/local/bin/rvm
/usr/bin/sudo /usr/sbin/groupdel rvm
/bin/echo "RVM is removed. Please check all .bashrc|.bash_profile|.profile|.zshrc for RVM source lines and delete or comment out if this was a Per-User installation."

After reading many articles I decided to put all the attributes information together:

1. atomic //default
2. nonatomic
3. strong=retain //default
4. weak= unsafe_unretained
5. retain
6. assign //default
7. unsafe_unretained
8. copy
9. readonly
10. readwrite //default

Below is a link to the detailed article where you can find these attributes.

Many thanks to all the people who give best answers here!!

Variable property attributes or Modifiers in iOS

Here is the Sample Description from Article

1. atomic -Atomic means only one thread access the variable(static type). -Atomic is thread safe. -but it is slow in performance -atomic is default behavior -Atomic accessors in a non garbage collected environment (i.e. when using retain/release/autorelease) will use a lock to ensure that another thread doesn't interfere with the correct setting/getting of the value. -it is not actually a keyword.

Example :

@property (retain) NSString *name;

@synthesize name;

2. nonatomic -Nonatomic means multiple thread access the variable(dynamic type). -Nonatomic is thread unsafe. -but it is fast in performance -Nonatomic is NOT default behavior,we need to add nonatomic keyword in property attribute. -it may result in unexpected behavior, when two different process (threads) access the same variable at the same time.

Example:

@property (nonatomic, retain) NSString *name;

@synthesize name;

Explain:

Suppose there is an atomic string property called "name", and if you call [self setName:@"A"] from thread A, call [self setName:@"B"] from thread B, and call [self name] from thread C, then all operation on different thread will be performed serially which means if one thread is executing setter or getter, then other threads will wait. This makes property "name" read/write safe but if another thread D calls [name release] simultaneously then this operation might produce a crash because there is no setter/getter call involved here. Which means an object is read/write safe (ATOMIC) but not thread safe as another threads can simultaneously send any type of messages to the object. Developer should ensure thread safety for such objects.

If the property "name" was nonatomic, then all threads in above example - A,B, C and D will execute simultaneously producing any unpredictable result. In case of atomic, Either one of A, B or C will execute first but D can still execute in parallel.

3. strong (iOS4 = retain ) -it says "keep this in the heap until I don't point to it anymore" -in other words " I'am the owner, you cannot dealloc this before aim fine with that same as retain" -You use strong only if you need to retain the object. -By default all instance variables and local variables are strong pointers. -We generally use strong for UIViewControllers (UI item's parents) -strong is used with ARC and it basically helps you , by not having to worry about the retain count of an object. ARC automatically releases it for you when you are done with it.Using the keyword strong means that you own the object.

Example:

@property (strong, nonatomic) ViewController *viewController;

@synthesize viewController;

4. weak (iOS4 = unsafe_unretained ) -it says "keep this as long as someone else points to it strongly" -the same thing as assign, no retain or release -A "weak" reference is a reference that you do not retain. -We generally use weak for IBOutlets (UIViewController's Childs).This works because the child object only needs to exist as long as the parent object does. -a weak reference is a reference that does not protect the referenced object from collection by a garbage collector. -Weak is essentially assign, a unretained property. Except the when the object is deallocated the weak pointer is automatically set to nil

Example :

@property (weak, nonatomic) IBOutlet UIButton *myButton;

@synthesize myButton;

Strong & Weak Explanation, Thanks to BJ Homer:

Imagine our object is a dog, and that the dog wants to run away (be deallocated). Strong pointers are like a leash on the dog. As long as you have the leash attached to the dog, the dog will not run away. If five people attach their leash to one dog, (five strong pointers to one object), then the dog will not run away until all five leashes are detached. Weak pointers, on the other hand, are like little kids pointing at the dog and saying "Look! A dog!" As long as the dog is still on the leash, the little kids can still see the dog, and they'll still point to it. As soon as all the leashes are detached, though, the dog runs away no matter how many little kids are pointing to it. As soon as the last strong pointer (leash) no longer points to an object, the object will be deallocated, and all weak pointers will be zeroed out. When we use weak? The only time you would want to use weak, is if you wanted to avoid retain cycles (e.g. the parent retains the child and the child retains the parent so neither is ever released).

5. retain = strong -it is retained, old value is released and it is assigned -retain specifies the new value should be sent -retain on assignment and the old value sent -release -retain is the same as strong. -apple says if you write retain it will auto converted/work like strong only. -methods like "alloc" include an implicit "retain"

Example:

@property (nonatomic, retain) NSString *name;

@synthesize name;

6. assign -assign is the default and simply performs a variable assignment -assign is a property attribute that tells the compiler how to synthesize the property's setter implementation -I would use assign for C primitive properties and weak for weak references to Objective-C objects.

Example:

@property (nonatomic, assign) NSString *address;

@synthesize address;

7. unsafe_unretained

   -unsafe_unretained is an ownership qualifier that tells ARC how to insert retain/release calls -unsafe_unretained is the ARC version of assign.

Example:

@property (nonatomic, unsafe_unretained) NSString *nickName;

@synthesize nickName;

8. copy -copy is required when the object is mutable. -copy specifies the new value should be sent -copy on assignment and the old value sent -release. -copy is like retain returns an object which you must explicitly release (e.g., in dealloc) in non-garbage collected environments. -if you use copy then you still need to release that in dealloc. -Use this if you need the value of the object as it is at this moment, and you don't want that value to reflect any changes made by other owners of the object. You will need to release the object when you are finished with it because you are retaining the copy.

Example:

@property (nonatomic, copy) NSArray *myArray;

@synthesize myArray;

Like JavaScript you can also use multiple statements on one line in python a = 1; b = "Hello World"; c += 3

var seconds = 0;
setInterval(function () {
  seconds++;
}, 1000);

There you go, now you have a variable counting seconds elapsed. Since I don't know the context, you'll have to decide whether you want to attach that variable to an object or make it global.

Set interval is simply a function that takes a function as it's first parameter and a number of milliseconds to repeat the function as it's second parameter.

You could also solve this by saving and comparing times.

EDIT: This answer will provide very inconsistent results due to things such as the event loop and the way browsers may choose to pause or delay processing when a page is in a background tab. I strongly recommend using the accepted answer.

As it appears you have the values as text, and not the numeric True/False, then you can use either COUNTIF or SUMPRODUCT

=IF(SUMPRODUCT(--(A2:D2="False")),"False","True")
=IF(COUNTIF(A3:D3,"False*"),"False","True")

Here is a version similar to Daniel's but replacing multiple matches:

public static string ReplaceGroup(string input, string pattern, RegexOptions options, string groupName, string replacement)
{
    Match match;
    while ((match = Regex.Match(input, pattern, options)).Success)
    {
        var group = match.Groups[groupName];

        var sb = new StringBuilder();

        // Anything before the match
        if (match.Index > 0)
            sb.Append(input.Substring(0, match.Index));

        // The match itself
        var startIndex = group.Index - match.Index;
        var length = group.Length;
        var original = match.Value;
        var prior = original.Substring(0, startIndex);
        var trailing = original.Substring(startIndex + length);
        sb.Append(prior);
        sb.Append(replacement);
        sb.Append(trailing);

        // Anything after the match
        if (match.Index + match.Length < input.Length)
            sb.Append(input.Substring(match.Index + match.Length));

        input = sb.ToString();
    }

    return input;

Nothing compares to extjs in terms of community size and presence on StackOverflow. Despite previous controversy, Ext JS now has a GPLv3 open source license. Its learning curve is long, but it can be quite rewarding once learned. Ext JS lacks a Material Design theme, and the team has repeatedly refused to release the source code on GitHub. For mobile, one must use the separate Sencha Touch library.

Have in mind also that,

large JavaScript libraries, such as YUI, have been receiving less attention from the community. Many developers today look at large JavaScript libraries as walled gardens they don’t want to be locked into.

-- Announcement of YUI development being ceased

That said, below are a number of Ext JS alternatives currently available.

Leading client widget libraries

1. Blueprint is a React-based UI toolkit developed by big data analytics company Palantir in TypeScript, and "optimized for building complex data-dense interfaces for desktop applications". Actively developed on GitHub as of May 2019, with comprehensive documentation. Components range from simple (chips, toast, icons) to complex (tree, data table, tag input with autocomplete, date range picker. No accordion or resizer.

   Blueprint targets modern browsers (Chrome, Firefox, Safari, IE 11, and Microsoft Edge) and is licensed under a modified Apache license.

   Sandbox / demo • GitHub • Docs

2. Webix - an advanced, easy to learn, mobile-friendly, responsive and rich free&open source JavaScript UI components library. Webix spun off from DHTMLX Touch (a project with 8 years of development behind it - see below) and went on to become a standalone UI components framework. The GPL3 edition allows commercial use and lets non-GPL applications using Webix keep their license, e.g. MIT, via a license exemption for FLOSS. Webix has 55 UI widgets, including trees, grids, treegrids and charts. Funding comes from a commercial edition with some advanced widgets (Pivot, Scheduler, Kanban, org chart etc.). Webix has an extensive list of free and commercial widgets, and integrates with most popular frameworks (React, Vue, Meteor, etc) and UI components.

   

   Skins look modern, and include a Material Design theme. The Touch theme also looks quite Material Design-ish. See also the Skin Builder.

   Minimal GitHub presence, but includes the library code, and the documentation (which still needs major improvements). Webix suffers from a having a small team and a lack of marketing. However, they have been responsive to user feedback, both on GitHub and on their forum.

   The library was lean (128Kb gzip+minified for all 55 widgets as of ~2015), faster than ExtJS, dojo and others, and the design is pleasant-looking. The current version of Webix (v6, as of Nov 2018) got heavier (400 - 676kB minified but NOT gzipped).

   The demos on Webix.com look and function great. The developer, XB Software, uses Webix in solutions they build for paying customers, so there's likely a good, funded future ahead of it.

   Webix aims for backwards compatibility down to IE8, and as a result carries some technical debt.

   Wikipedia • GitHub • Playground/sandbox • Admin dashboard demo • Demos • Widget samples

3. react-md - MIT-licensed Material Design UI components library for React. Responsive, accessible. Implements components from simple (buttons, cards) to complex (sortable tables, autocomplete, tags input, calendars). One lead author, ~1900 GitHub stars.

4. kendo - jQuery-based UI toolkit with 40+ basic open-source widgets, plus commercial professional widgets (grids, trees, charts etc.). Responsive&mobile support. Works with Bootstrap and AngularJS. Modern, with Material Design themes. The documentation is available on GitHub, which has enabled numerous contributions from users (4500+ commits, 500+ PRs as of Jan 2015).

   

   Well-supported commercially, claiming millions of developers, and part of a large family of developer tools. Telerik has received many accolades, is a multi-national company (Bulgaria, US), was acquired by Progress Software, and is a thought leader.

   A Kendo UI Professional developer license costs $700 and posting access to most forums is conditioned upon having a license or being in the trial period.

   [Wikipedia] • GitHub/Telerik • Demos • Playground • Tools

5. OpenUI5 - jQuery-based UI framework with 180 widgets, Apache 2.0-licensed and fully-open sourced and funded by German software giant SAP SE.

   

   The community is much larger than that of Webix, SAP is hiring developers to grow OpenUI5, and they presented OpenUI5 at OSCON 2014.

   The desktop themes are rather lackluster, but the Fiori design for web and mobile looks clean and neat.

   Wikipedia • GitHub • Mobile-first controls demos • Desktop controls demos • SO

6. DHTMLX - JavaScript library for building rich Web and Mobile apps. Looks most like ExtJS - check the demos. Has been developed since 2005 but still looks modern. All components except TreeGrid are available under GPLv2 but advanced features for many components are only available in the commercial PRO edition - see for example the tree. Claims to be used by many Fortune 500 companies.

   

   Minimal presence on GitHub (the main library code is missing) and StackOverflow but active forum. The documentation is not available on GitHub, which makes it difficult to improve by the community.

7. Polymer, a Web Components polyfill, plus Polymer Paper, Google's implementation of the Material design. Aimed at web and mobile apps. Doesn't have advanced widgets like trees or even grids but the controls it provides are mobile-first and responsive. Used by many big players, e.g. IBM or USA Today.

   

8. Ant Design claims it is "a design language for background applications", influenced by "nature" and helping designers "create low-entropy atmosphere for developer team". That's probably a poor translation from Chinese for "UI components for enterprise web applications". It's a React UI library written in TypeScript, with many components, from simple (buttons, cards) to advanced (autocomplete, calendar, tag input, table).

   The project was born in China, is popular with Chinese companies, and parts of the documentation are available only in Chinese. Quite popular on GitHub, yet it makes the mistake of splitting the community into Chinese and English chat rooms. The design looks Material-ish, but fonts are small and the information looks lost in a see of whitespace.

9. PrimeUI - collection of 45+ rich widgets based on jQuery UI. Apache 2.0 license. Small GitHub community. 35 premium themes available.

10. qooxdoo - "a universal JavaScript framework with a coherent set of individual components", developed and funded by German hosting provider 1&1 (see the contributors, one of the world's largest hosting companies. GPL/EPL (a business-friendly license).

    Mobile themes look modern but desktop themes look old (gradients).

    

    Wikipedia • GitHub • Web/Mobile/Desktop demos • Widgets Demo browser • Widget browser • SO • Playground • Community

11. jQuery UI - easy to pick up; looks a bit dated; lacks advanced widgets. Of course, you can combine it with independent widgets for particular needs, e.g. trees or other UI components, but the same can be said for any other framework.

12. angular + Angular UI. While Angular is backed by Google, it's being radically revamped in the upcoming 2.0 version, and "users will need to get to grips with a new kind of architecture. It's also been confirmed that there will be no migration path from Angular 1.X to 2.0". Moreover, the consensus seems to be that Angular 2 won't really be ready for use until a year or two from now. Angular UI has relatively few widgets (no trees, for example).

13. DojoToolkit and their powerful Dijit set of widgets. Completely open-sourced and actively developed on GitHub, but development is now (Nov 2018) focused on the new dojo.io framework, which has very few basic widgets. BSD/AFL license. Development started in 2004 and the Dojo Foundation is being sponsored by IBM, Google, and others - see Wikipedia. 7500 questions here on SO.

    

    Themes look desktop-oriented and dated - see the theme tester in dijit. The official theme previewer is broken and only shows "Claro". A Bootstrap theme exists, which looks a lot like Bootstrap, but doesn't use Bootstrap classes. In Jan 2015, I started a thread on building a Material Design theme for Dojo, which got quite popular within the first hours. However, there are questions regarding building that theme for the current Dojo 1.10 vs. the next Dojo 2.0. The response to that thread shows an active and wide community, covering many time zones.

    Unfortunately, Dojo has fallen out of popularity and fewer companies appear to use it, despite having (had?) a strong foothold in the enterprise world. In 2009-2012, its learning curve was steep and the documentation needed improvements; while the documentation has substantially improved, it's unclear how easy it is to pick up Dojo nowadays.

    With a Material Design theme, Dojo (2.0?) might be the killer UI components framework.

    Wikipedia • GitHub • Themes • Demos • Desktop widgets • SO

14. Enyo - front-end library aimed at mobile and TV apps (e.g. large touch-friendly controls). Developed by LG Electronix and Apache-licensed on GitHub.

15. The radical Cappuccino - Objective-J (a superset of JavaScript) instead of HTML+CSS+DOM

16. Mochaui, MooTools UI Library User Interface Library. <300 GitHub stars.

17. CrossUI - cross-browser JS framework to develop and package the exactly same code and UI into Web Apps, Native Desktop Apps (Windows, OS X, Linux) and Mobile Apps (iOS, Android, Windows Phone, BlackBerry). Open sourced LGPL3. Featured RAD tool (form builder etc.). The UI looks desktop-, not web-oriented. Actively developed, small community. No presence on GitHub.

18. ZinoUI - simple widgets. The DataTable, for instance, doesn't even support sorting.

19. Wijmo - good-looking commercial widgets, with old (jQuery UI) widgets open-sourced on GitHub (their development stopped in 2013). Developed by ComponentOne, a division of GrapeCity. See Wijmo Complete vs. Open.

20. CxJS - commercial JS framework based on React, Babel and webpack offering form elements, form validation, advanced grid control, navigational elements, tooltips, overlays, charts, routing, layout support, themes, culture dependent formatting and more.

Widgets - Demo Apps - Examples - GitHub

Full-stack frameworks

1. SproutCore - developed by Apple for web applications with native performance, handling large data sets on the client. Powers iCloud.com. Not intended for widgets.

2. Wakanda: aimed at business/enterprise web apps - see What is Wakanda?. Architecture:

   • Wakanda Server (server-side JavaScript (custom engine) + open-source NoSQL database)
   • desktop IDE and WYSIWYG editor for tables, forms, reports

   • Wakanda Application Framework (datasource layer + browser-based interface widgets) that helps with browser and device compatibility across desktop and mobile

     Wakanda is highly integrated, includes a ton of features out of the box, but has a very small GitHub community and SO presence.

3. Servoy - "a cross platform frontend development and deployment environment for SQL databases". Boasts a "full WYSIWIG (What You See Is What You Get) UI designer for HTML5 with built-in data-binding to back-end services", responsive design, support for HTML6 Web Components, Websockets and mobile platforms. Written in Java and generates JavaScript code using various JavaBeans.

4. SmartClient/SmartGWT - mobile and cross-browser HTML5 UI components combined with a Java server. Aimed at building powerful business apps - see demos.

5. Vaadin - full-stack Java/GWT + JavaScript/HTML3 web app framework

6. Backbase - portal software

7. Shiny - front-end library on top R, with visualization, layout and control widgets

8. ZKOSS: Java+jQuery+Bootstrap framework for building enterprise web and mobile apps.

CSS libraries + minimal widgets

These libraries don't implement complex widgets such as tables with sorting/filtering, autocompletes, or trees.

1. Bootstrap

2. Foundation for Apps - responsive front-end framework on top of AngularJS; more of a grid/layout/navigation library

3. UI Kit - similar to Bootstrap, with fewer widgets, but with official off-canvas.

Libraries using HTML Canvas

Using the canvas elements allows for complete control over the UI, and great cross-browser compatibility, but comes at the cost of missing native browser functionality, e.g. page search via Ctrl/Cmd+F.

1. Zebra - demos

No longer developed as of Dec 2014

1. Yahoo! User Interface - YUI, launched in 2005, but no longer maintained by the core contributors - see the announcement, which highlights reasons why large UI widget libraries are perceived as walled gardens that developers don't want to be locked into.
2. echo3, GitHub. Supports writing either server-side Java applications that don't require developer knowledge of HTML, HTTP, or JavaScript, or client-side JavaScript-based applications do not require a server, but can communicate with one via AJAX. Last update: July 2013.
3. ampleSDK
4. Simpler widgets livepipe.net
5. JxLib
6. rialto
7. Simple UI kit
8. Prototype-ui

Other lists

• Best of JS - component toolkits
• Wikipedia's Comparison of JavaScript frameworks
• Wikipedia's list of GUI-related JavaScript libraries
• jqueryuiwidgets.com - detailed jQuery widgets feature comparison

This might be a little more clear:

double width = MediaQuery.of(context).size.width;

double yourWidth = width * 0.65;

Hope this solved your problem.

In Oracle query

select a.x
            ,(select b.y || ',' || b.z
                from   b
                where  b.v = a.v
                and    rownum = 1) as multple_columns
from   a

can be transformed to:

select a.x, b1.y, b1.z
from   a, b b1
where  b1.rowid = (
       select b.rowid
       from   b
       where  b.v = a.v
       and    rownum = 1
)

Is useful when we want to prevent duplication for table A. Similarly, we can increase the number of tables:

.... where (b1.rowid,c1.rowid) = (select b.rowid,c.rowid ....

You may want to look into Maven release plugin's release:update-versions goal. It will update the parent's version as well as all the modules under it.

Update: Please note that the above is the release plugin. If you are not releasing, you may want to use versions:set

mvn versions:set -DnewVersion=1.2.3-SNAPSHOT

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {

    if #available(iOS 10, *) {

        //Notifications get posted to the function (delegate):  func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: () -> Void)"


        UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .badge, .sound]) { (granted, error) in

            guard error == nil else {
                //Display Error.. Handle Error.. etc..
                return
            }

            if granted {
                //Do stuff here..

                //Register for RemoteNotifications. Your Remote Notifications can display alerts now :)
                DispatchQueue.main.async {
                    application.registerForRemoteNotifications()
                }
            }
            else {
                //Handle user denying permissions..
            }
        }

        //Register for remote notifications.. If permission above is NOT granted, all notifications are delivered silently to AppDelegate.
        application.registerForRemoteNotifications()
    }
    else {
        let settings = UIUserNotificationSettings(types: [.alert, .badge, .sound], categories: nil)
        application.registerUserNotificationSettings(settings)
        application.registerForRemoteNotifications()
    }

    return true
}

I like the solution from

http://www.nautsch.net/2008/10/28/class-von-type-parameter-java-generics/

public class Dada<T> {

    private Class<T> typeOfT;

    @SuppressWarnings("unchecked")
    public Dada() {
        this.typeOfT = (Class<T>)
                ((ParameterizedType)getClass()
                .getGenericSuperclass())
                .getActualTypeArguments()[0];
    }
...

The React Native Button is very limited in what you can do, see; Button

It does not have a style prop, and you don't set text the "web-way" like <Button>txt</Button> but via the title property <Button title="txt" />

If you want to have more control over the appearance you should use one of the TouchableXXXX' components like TouchableOpacity They are really easy to use :-)

Even though, I have been using 400 to represent logical errors also, I have to say that returning 400 is wrong in this case because of the way the spec reads. Here is why i think so, the logical error could be that a relationship with another entity was failing or not satisfied and making changes to the other entity could cause the same exact to pass later. Like trying to (completely hypothetical) add an employee as a member of a department when that employee does not exist (logical error). Adding employee as member request could fail because employee does not exist. But the same exact request could pass after the employee has been added to the system.

Just my 2 cents ... We need lawyers & judges to interpret the language in the RFC these days :)

Thank You, Vish

You could use this command:

ffmpeg -i input.wav -vn -ar 44100 -ac 2 -b:a 192k output.mp3

Explanation of the used arguments in this example:

• -i - input file

• -vn - Disable video, to make sure no video (including album cover image) is included if the source would be a video file

• -ar - Set the audio sampling frequency. For output streams it is set by default to the frequency of the corresponding input stream. For input streams this option only makes sense for audio grabbing devices and raw demuxers and is mapped to the corresponding demuxer options.

• -ac - Set the number of audio channels. For output streams it is set by default to the number of input audio channels. For input streams this option only makes sense for audio grabbing devices and raw demuxers and is mapped to the corresponding demuxer options. So used here to make sure it is stereo (2 channels)

• -b:a - Converts the audio bitrate to be exact 192kbit per second

This Worked for me. i implemented this solution in reactJS

const requestOptions = {`enter code here`
method: 'GET',
headers: { 'Content-Type': 'application/json' }
};

fetch(`${url}`, requestOptions)
.then((res) => {
    return res.blob();
})
.then((blob) => {
    const href = window.URL.createObjectURL(blob);
    const link = document.createElement('a');
    link.href = href;
    link.setAttribute('download', 'config.json'); //or any other extension
    document.body.appendChild(link);
    link.click();
})
.catch((err) => {
    return Promise.reject({ Error: 'Something Went Wrong', err });
})

Okay, here's a list of things to look into:

1) If you're not running a webserver of any kind and just testing with file://index.html, then you're probably running into same-origin policy issues. See:

https://code.google.com/archive/p/browsersec/wikis/Part2.wiki#Same-origin_policy

Many browsers don't allow locally hosted files to access other locally hosted files. Firefox does allow it, but only if the file you're loading is contained in the same folder as the html file (or a subfolder).

2) The success function returned from $http.get() already splits up the result object for you:

$http({method: 'GET', url: '/someUrl'}).success(function(data, status, headers, config) {

So it's redundant to call success with function(response) and return response.data.

3) The success function does not return the result of the function you pass it, so this does not do what you think it does:

var mainInfo = $http.get('content.json').success(function(response) {
        return response.data;
    });

This is closer to what you intended:

var mainInfo = null;
$http.get('content.json').success(function(data) {
    mainInfo = data;
});

4) But what you really want to do is return a reference to an object with a property that will be populated when the data loads, so something like this:

theApp.factory('mainInfo', function($http) { 

    var obj = {content:null};

    $http.get('content.json').success(function(data) {
        // you can do some processing here
        obj.content = data;
    });    

    return obj;    
});

mainInfo.content will start off null, and when the data loads, it will point at it.

Alternatively you can return the actual promise the $http.get returns and use that:

theApp.factory('mainInfo', function($http) { 
    return $http.get('content.json');
});

And then you can use the value asynchronously in calculations in a controller:

$scope.foo = "Hello World";
mainInfo.success(function(data) { 
    $scope.foo = "Hello "+data.contentItem[0].username;
});

You can use np.clip() to achieve the same:

a = [1, 3, 5, 6, 9, 10, 14, 15, 56]  
np.clip(a,6,10)

However, it holds the values less than and greater than 6 and 10 respectively.

Personally i prefer the format function, allows you to simply change the date part very easily.

     declare @format varchar(100) = 'yyyy/MM/dd'
     select 
        format(the_date,@format), 
        sum(myfield) 
     from mytable 
     group by format(the_date,@format) 
     order by format(the_date,@format) desc;

Here is a way to call controller's function from outside of it:

angular.element(document.getElementById('yourControllerElementID')).scope().get();

where get() is a function from your controller.

You can switch

document.getElementById('yourControllerElementID')` 

to

$('#yourControllerElementID')

If you are using jQuery.

Also, if your function means changing anything on your View, you should call

angular.element(document.getElementById('yourControllerElementID')).scope().$apply();

to apply the changes.

One more thing, you should note is that scopes are initialized after the page is loaded, so calling methods from outside of scope should always be done after the page is loaded. Else you will not get to the scope at all.

UPDATE:

With the latest versions of angular, you should use

angular.element(document.getElementById('yourControllerElementID')).injector().??get('$rootScope')

And yes, this is, in fact, a bad practice, but sometimes you just need things done quick and dirty.

The method is implemented in "native" code. That is, code that does not run in the JVM. It's typically written in C or C++.

Native methods are usually used to interface with system calls or libraries written in other programming languages.

setTimeout() function it's use to delay a process in JavaScript.

w3schools has an easy tutorial about this function.

Please use DateTimeFormatter ISO_DATE_TIME = DateTimeFormatter.ISO_DATE_TIME; instead of DateTimeFormatter.ofPattern("dd-MM-yyyy HH:mm:ss") or any pattern

This fixed my problem Below

java.time.format.DateTimeParseException: Text '2019-12-18T19:00:00.000Z' could not be parsed at index 10

Another approach is keep that element, change the text, then append that element back

const star_icon = $(li).find('.stars svg')
$(li).find('.stars').text(repo.stargazers_count).append(star_icon)

If the same error occurs in ADT/Eclipse

Add Action Bar Sherlock library in your project.

Now, to remove the "import The import android.support.v7 cannot be resolved" error download a jar file named as android-support-v7-appcompat.jar and add it in your project lib folder.

This will surely removes your both errors.

Try the following:

boolean isDebuggable =  ( 0 != ( getApplicationInfo().flags & ApplicationInfo.FLAG_DEBUGGABLE ) );

Kotlin:

val isDebuggable = 0 != applicationInfo.flags and ApplicationInfo.FLAG_DEBUGGABLE

It is taken from bundells post from here

It seems to me there is value in considering some rewrites to your SQL code before attempting to translate it.

Personally, I'd write such a query as a union (although I'd avoid nulls entirely!):

SELECT f.value
  FROM period as p JOIN facts AS f ON p.id = f.periodid
WHERE p.companyid = 100
      AND f.otherid = 17
UNION
SELECT NULL AS value
  FROM period as p
WHERE p.companyid = 100
      AND NOT EXISTS ( 
                      SELECT * 
                        FROM facts AS f
                       WHERE p.id = f.periodid
                             AND f.otherid = 17
                     );

So I guess I agree with the spirit of @MAbraham1's answer (though their code seems to be unrelated to the question).

However, it seems the query is expressly designed to produce a single column result comprising duplicate rows -- indeed duplicate nulls! It's hard not to come to the conclusion that this approach is flawed.

You can use dangerouslySetInnerHTML

Just send the html as a normal string

<MyComponent text="This is <strong>not</strong> working." />

And render in in the JSX code like this:

<h2 className="header-title-right wow fadeInRight"
    dangerouslySetInnerHTML={{__html: props.text}} />

Just be careful if you are rendering data entered by the user. You can be victim of a XSS attack

Here's the documentation: https://facebook.github.io/react/tips/dangerously-set-inner-html.html

I was facing the problem in passing string value to string parameters in Ajax. After so much googling, i have come up with a custom solution as below.

var bar = 'xyz';
var calibri = 'no$libri';

$.ajax({
   type: "POST",
   dataType: "json",
   contentType: "application/json; charset=utf-8",
   url: "http://nakolesah.ru/",
   data: '{ foo: \'' + bar + '\', zoo: \'' + calibri + '\'}',
   success: function(msg){
       alert('wow'+msg);
   },
});

Here, bar and calibri are two string variables and you can pass whatever string value to respective string parameters in web method.

There are other ways to parse it rather than the first answer. To parse it:

(1) If you want to grab information about date and time, you can parse it to a ZonedDatetime(since Java 8) or Date(old) object:

// ZonedDateTime's default format requires a zone ID(like [Australia/Sydney]) in the end.
// Here, we provide a format which can parse the string correctly.
DateTimeFormatter dtf = DateTimeFormatter.ISO_DATE_TIME;
ZonedDateTime zdt = ZonedDateTime.parse("2011-08-12T20:17:46.384Z", dtf);

or

// 'T' is a literal.
// 'X' is ISO Zone Offset[like +01, -08]; For UTC, it is interpreted as 'Z'(Zero) literal.
String pattern = "yyyy-MM-dd'T'HH:mm:ss.SSSX";

// since no built-in format, we provides pattern directly.
DateFormat df = new SimpleDateFormat(pattern);

Date myDate = df.parse("2011-08-12T20:17:46.384Z");

(2) If you don't care the date and time and just want to treat the information as a moment in nanoseconds, then you can use Instant:

// The ISO format without zone ID is Instant's default.
// There is no need to pass any format.
Instant ins = Instant.parse("2011-08-12T20:17:46.384Z");

This worked for me, saving to child dir(temp_pdf) under the root:

$sFilePath = $_SERVER['DOCUMENT_ROOT'] . '//temp_pdf/file.pdf' ;
$pdf->Output( $sFilePath , 'F');

Remember to make the dir writeable.

Is JavaScript object-oriented?

Answer : Yes

It has objects which can contain data and methods that act upon that data. Objects can contain other objects.

• It does not have classes, but it does have constructors which do what classes do, including acting as containers for class variables and methods.
• It does not have class-oriented inheritance, but it does have prototype-oriented inheritance.

The two main ways of building up object systems are by inheritance (is-a) and by aggregation (has-a). JavaScript does both, but its dynamic nature allows it to excel at aggregation.

Some argue that JavaScript is not truly object oriented because it does not provide information hiding. That is, objects cannot have private variables and private methods: All members are public.

But it turns out that JavaScript objects can have private variables and private methods. (Click here now to find out how.) Of course, few understand this because JavaScript is the world's most misunderstood programming language.

Some argue that JavaScript is not truly object oriented because it does not provide inheritance. But it turns out that JavaScript supports not only classical inheritance, but other code reuse patterns as well.

Sources : http://javascript.crockford.com/javascript.html

The Extended WPF Toolkit has one: NumericUpDown

Presuming that you have installed: bash, pwd, dirname, echo; then relpath is

#!/bin/bash
s=$(cd ${1%%/};pwd); d=$(cd $2;pwd); b=; while [ "${d#$s/}" == "${d}" ]
do s=$(dirname $s);b="../${b}"; done; echo ${b}${d#$s/}

I've golfed the answer from pini and a few other ideas

Note: This requires both paths to be existing folders. Files will not work.

Do it this way (make necessary changes in code)..

            SqlConnection con = new SqlConnection(GetConnectionString());
            con.Open();
            SqlCommand cmd = new SqlCommand("CheckUser", con);
            cmd.CommandType = CommandType.StoredProcedure;
            SqlParameter p1 = new SqlParameter("username", username.Text);
            SqlParameter p2 = new SqlParameter("password", password.Text);
            cmd.Parameters.Add(p1);
            cmd.Parameters.Add(p2);
            SqlDataReader rd = cmd.ExecuteReader();
            if(rd.HasRows)
            {
                //do the things
            }
            else
            {
                lblinfo.Text = "abc";
            }

You do not need {{}} in when conditions. What you are searching for is:

- fail: msg="unsupported version"
  when: version not in acceptable_versions

Ya Mahdi aj---for RelativeLayout

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape android:shape="rectangle">
            <gradient
                android:startColor="#7d000000"
                android:endColor="@android:color/transparent"
                android:angle="90" >
            </gradient>
            <corners android:radius="2dp" />
        </shape>
    </item>

    <item
        android:left="0dp"
        android:right="3dp"
        android:top="0dp"
        android:bottom="3dp">
        <shape android:shape="rectangle">
            <padding
                android:bottom="40dp"
                android:top="40dp"
                android:right="10dp"
                android:left="10dp"
                >
            </padding>
            <solid android:color="@color/Whitetransparent"/>
            <corners android:radius="2dp" />
        </shape>
    </item>
</layer-list>

try this

Object.keys(data).length

If IE < 9, you can loop through the object yourself with a for loop

var len = 0;
var i;

for (i in data) {
    if (data.hasOwnProperty(i)) {
        len++;
    }
}

The best way is not to write any initializing statements. This is because if you write int a[]=new int[3] then by default, in Java all the values of array i.e. a[0], a[1] and a[2] are initialized to 0! Regarding the local variable hiding a field, post your entire code for us to come to conclusion.

You can use order() to sort date data.

# Sort date ascending order
d[order(as.Date(d$V3, format = "%d/%m/%Y")),]

# Sort date descending order
d[rev(order(as.Date(d$V3, format = "%d/%m/%y"))),]

Hope this helps,

Link to my quora answer https://qr.ae/TWngCe

Thanks

Maybe too late, but I'd cast 0/1 as bit to make the datatype eventually becomes True/False when consumed by .NET framework:

SELECT   EntityId, 
         EntityName, 
         CASE 
            WHEN EntityProfileIs IS NULL 
            THEN CAST(0 as bit) 
            ELSE CAST(1 as bit) END AS HasProfile
FROM      Entities
LEFT JOIN EntityProfiles ON EntityProfiles.EntityId = Entities.EntityId`

This work for me, after that I could convert put my picture in a bytea field in my database.

using (MemoryStream s = new MemoryStream(DirEntry.Properties["thumbnailphoto"].Value as byte[]))
{
    return s.ToArray();
}

Based on @seb's solution, I created a subclass of RecyclerView.Adapter that supports an arbitrary number of headers and footers.

https://gist.github.com/mheras/0908873267def75dc746

Although it seems to be a solution, I also think this thing should be managed by the LayoutManager. Unfortunately, I need it now and I don't have time to implement a StaggeredGridLayoutManager from scratch (nor even extend from it).

I'm still testing it, but you can try it out if you want. Please let me know if you find any issues with it.

Following works out for me.

    #!/usr/bin/env python
    a = [{ 'main_color': 'red', 'second_color':'blue'},
    { 'main_color': 'yellow', 'second_color':'green'},
    { 'main_color': 'yellow', 'second_color':'blue'}]

    found_event = next(
            filter(
                lambda x: x['main_color'] == 'red',
                a
            ),
      #return this dict when not found
            dict(
                name='red',
                value='{}'
            )
        )

    if found_event:
        print(found_event)

    $python  /tmp/x
    {'main_color': 'red', 'second_color': 'blue'}

.form-group .required .control-label:after should probably be .form-group.required .control-label:after. The removal of the space between .form-group and .required is the change.

Perfect answer for your question can be found on MYSQL site itself.refer their manual(without using PHP)

http://forums.mysql.com/read.php?20,17671,27914

According to them use LONGBLOB datatype. with that you can only store images less than 1MB only by default,although it can be changed by editing server config file.i would also recommend using MySQL workBench for ease of database management

In perl:

if($testString =~ /\d/) 
{
    print "This string contains at least one digit"
}

where \d matches to a digit.

There is no maximum since Ruby 2.4, as Bignum and Fixnum got unified into Integer. see Feature #12005

> (2 << 1000).is_a? Fixnum
(irb):322: warning: constant ::Fixnum is deprecated
=> true

> 1.is_a? Bignum
(irb):314: warning: constant ::Bignum is deprecated
=> true

> (2 << 1000).class
=> Integer

There won't be any overflow, what would happen is an out of memory.

Just for those interested you can avoid writing custom function by passing NULL as last parameter (if you do not intend to do extra processing of returned data).
In this case default internal function is used.

Details
http://curl.haxx.se/libcurl/c/curl_easy_setopt.html#CURLOPTWRITEDATA

Example

#include <stdio.h>
#include <curl/curl.h>

int main(void)
{
    CURL *curl;
    FILE *fp;
    CURLcode res;
    char *url = "http://stackoverflow.com";
    char outfilename[FILENAME_MAX] = "page.html";
    curl = curl_easy_init();                                                                                                                                                                                                                                                           
    if (curl)
    {   
        fp = fopen(outfilename,"wb");
        curl_easy_setopt(curl, CURLOPT_URL, url);
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, NULL);
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, fp);
        res = curl_easy_perform(curl);
        curl_easy_cleanup(curl);
        fclose(fp);
    }   
    return 0;
}

You are definitely searching for this

Yii::app()->request->pathInfo

Simply use RelativeLayout or FrameLayout. The last child view will overlay everything else.

Android supports a pattern which Cocoa Touch SDK doesn't: Layout management.
Layout for iPhone means to position everything absolute (besides some strech factors). Layout in android means that children will be placed in relation to eachother.

Example (second EditText will completely cover the first one):

<FrameLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:id="@+id/root_view">

    <EditText
        android:layout_width="fill_parent"
        android:id="@+id/editText1"
        android:layout_height="fill_parent">
    </EditText>

    <EditText
        android:layout_width="fill_parent"
        android:id="@+id/editText2"
        android:layout_height="fill_parent">
        <requestFocus></requestFocus>
    </EditText>

</FrameLayout>

FrameLayout is some kind of view stack. Made for special cases.

RelativeLayout is pretty powerful. You can define rules like View A has to align parent layout bottom, View B has to align A bottom to top, etc

Update based on comment

Usually you set the content with setContentView(R.layout.your_layout) in onCreate (it will inflate the layout for you). You can do that manually and call setContentView(inflatedView), there's no difference.

The view itself might be a single view (like TextView) or a complex layout hierarchy (nested layouts, since all layouts are views themselves).

After calling setContentView your activity knows what its content looks like and you can use (FrameLayout) findViewById(R.id.root_view) to retrieve any view int this hierarchy (General pattern (ClassOfTheViewWithThisId) findViewById(R.id.declared_id_of_view)).

I found this to be the simplest way:

myInteger.ToString("N0")

I know this was already answered as to what the actual problem is, however I want to offer a simple workaround.

I wanted to use the get_results() method however I didn't have the driver, and I'm not somewhere I can get that added. So, before I called

$stmt->bind_results($var1,$var2,$var3,$var4...etc);

I created an empty array, and then just bound the results as keys in that array:

$result = array();
$stmt->bind_results($result['var1'],$result['var2'],$result['var3'],$result['var4']...etc);

so that those results could easily be passed into methods or cast to an object for further use.

Hope this helps anyone who's looking to do something similar.

I got this error resolved by doing 2 things in chrome browser:

1. Pressed Ctrl + Shift + Delete and cleared all browsing data from beginning.
2. Go to Chrome's : Settings ->Advanced Settings -> Open proxy settings -> Internet Properties then Go to the Content window and click on the Clear SSL State Button.

This site has this information and other options as well : https://www.thesslstore.com/blog/fix-err-ssl-protocol-error/

This is ugly as all hell, but always produces correct arithmetic rounding.

public double ArithRound(double number,int places){

  string numberFormat = "###.";

  numberFormat = numberFormat.PadRight(numberFormat.Length + places, '#');

  return double.Parse(number.ToString(numberFormat));

}

If your code is already running in a background thread, pause the thread using this method in Foundation: Thread.sleep(forTimeInterval:)

For example:

DispatchQueue.global(qos: .userInitiated).async {

    // Code is running in a background thread already so it is safe to sleep
    Thread.sleep(forTimeInterval: 4.0)
}

(See other answers for suggestions when your code is running on the main thread.)

You can use COPY table TO ... WITH BINARY which is "somewhat faster than the text and CSV formats." Only do this if you have millions of rows to insert, and if you are comfortable with binary data.

Here is an example recipe in Python, using psycopg2 with binary input.

Reduce text-indent to a negative number to decrease the space between the list item's bullet and its text.

li {
  text-indent: -4px;
}

You can also use margin-left to adjust any space between the list-item's bullet and the edge of its surrounding element.

li {
  margin-left: 24px;
}

Both text-indent and padding-left can add space between the bullet and text, but only text-indent can reduce space to negative.

To me it looks like everyone is trying way too hard to accomplish this task. All we are concerned about is that it copies 1 copy of each letter if it repeats. Then because we are only concerned if those characters repeat one after the other the nested loops become arbitrary as you can just simply compare position n to position n + 1. Then because this only copies things down when they're different, to solve for the last character you can either append white space to the end of the original string, or just get it to copy the last character of the string to your result.

String removeDuplicate(String s){

    String result = "";

    for (int i = 0; i < s.length(); i++){
        if (i + 1 < s.length() && s.charAt(i) != s.charAt(i+1)){
            result = result + s.charAt(i);
        }
        if (i + 1 == s.length()){
            result = result + s.charAt(i);
        }
    }

    return result;

}

Similar to paxdiablo above. This code, inserted in a wider app, works fine with STM32 NUCLEO-F446RE.

#include <stdio.h>
#include <math.h>
#include <string.h>
void IntegFract(char *pcIntegStr, char *pcFractStr, double dbValue, int iPrecis);

main()
{
   char acIntegStr[9], acFractStr[9], char counter_buff[30];
   double seconds_passed = 123.0567;
   IntegFract(acIntegStr, acFractStr, seconds_passed, 3);
   sprintf(counter_buff, "Time: %s.%s Sec", acIntegStr, acFractStr);
}

void IntegFract(char *pcIntegStr, char *pcFractStr, double dbValue, int 
iPrecis)
{
    int iIntegValue = dbValue;
    int iFractValue = (dbValue - iIntegValue) * pow(10, iPrecis);
    itoa(iIntegValue, pcIntegStr, 10);
    itoa(iFractValue, pcFractStr, 10);
    size_t length = strlen(pcFractStr);
    char acTemp[9] = "";
    while (length < iPrecis)
    {
        strcat(acTemp, "0");
        length++;
    }
    strcat(acTemp, pcFractStr);
    strcpy(pcFractStr, acTemp);
}

counter_buff would contain 123.056 .

Here's what I use:

<logger name="org.hibernate">
    <level value="warn"/>
</logger>

<logger name="org.hibernate.SQL">
    <level value="warn"/>
</logger>

<logger name="org.hibernate.type">
    <level value="warn"/>
</logger>

<root>
    <priority value="info"/>
    <appender-ref ref="C1"/>
</root> 

Obviously, I don't like to see Hibernate messages ;) -- set the level to "debug" to get the output.

You might find your code is more maintainable if you keep all your styles, etc. in CSS and just set / unset class names in JavaScript.

Your CSS would obviously be something like:

.highlight {
    background:#ff00aa;
}

Then in JavaScript:

element.className = element.className === 'highlight' ? '' : 'highlight';

The second one causes a new char array to be created, and all chars from the String to be copied to this new char array, so I would guess that the first one is faster (and less memory-hungry).

Simple CASE expression:

CASE input_expression 
     WHEN when_expression THEN result_expression [ ...n ] 
     [ ELSE else_result_expression ] 
END

Searched CASE expression:

CASE
     WHEN Boolean_expression THEN result_expression [ ...n ] 
     [ ELSE else_result_expression ] 
END

Reference: http://msdn.microsoft.com/en-us/library/ms181765.aspx

As @PavelAnossov answered, the canonical answer, use the word_tokenize function in nltk:

from nltk import word_tokenize
sent = "This is my text, this is a nice way to input text."
word_tokenize(sent)

If your sentence is truly simple enough:

Using the string.punctuation set, remove punctuation then split using the whitespace delimiter:

import string
x = "This is my text, this is a nice way to input text."
y = "".join([i for i in x if not in string.punctuation]).split(" ")
print y

You can use querySelectorAll:

    document.querySelectorAll('span[property=name]');

You can also use this direct command line to open the Advanced System Properties:

sysdm.cpl

Then go to the Advanced Tab -> Environment Variables

Create CustomerDTO Object every time inside while loop

Check the below code

    while (rs.next()) {

    Customer customer = new Customer();

    customer.setId(rs.getInt("id"));
    customer.setName(rs.getString("name"));
    customer.setAddress(rs.getString("address"));
    customer.setPhone(rs.getString("phone"));
    customer.setEmail(rs.getString("email"));
    customer.setBountPoints(rs.getInt("bonuspoint"));
    customer.setTotalsale(rs.getInt("totalsale"));

    customers.add(customer);
}

Use like this (source):

function setCookie(c_name,value,exdays)
{

var exdate=new Date();
exdate.setDate(exdate.getDate() + exdays);
var c_value=escape(value) + ((exdays==null) ? "" : "; expires="+exdate.toUTCString());
document.cookie = c_name+"="+c_value+"; path=/";
}

You may use bash functions in commands/pipelines as you would otherwise use regular programs. The functions are also available to subshells and transitively, Command Substitution:

VAR=$(scan)

Is the straighforward way to achieve the result you want in most cases. I will outline special cases below.

Preserving trailing Newlines:

One of the (usually helpful) side effects of Command Substitution is that it will strip any number of trailing newlines. If one wishes to preserve trailing newlines, one can append a dummy character to output of the subshell, and subsequently strip it with parameter expansion.

function scan2 () {
    local nl=$'\x0a';  # that's just \n
    echo "output${nl}${nl}" # 2 in the string + 1 by echo
}

# append a character to the total output.
# and strip it with %% parameter expansion.
VAR=$(scan2; echo "x"); VAR="${VAR%%x}"

echo "${VAR}---"

prints (3 newlines kept):

output


---

Use an output parameter: avoiding the subshell (and preserving newlines)

If what the function tries to achieve is to "return" a string into a variable , with bash v4.3 and up, one can use what's called a nameref. Namerefs allows a function to take the name of one or more variables output parameters. You can assign things to a nameref variable, and it is as if you changed the variable it 'points to/references'.

function scan3() {
    local -n outvar=$1    # -n makes it a nameref.
    local nl=$'\x0a'
    outvar="output${nl}${nl}"  # two total. quotes preserve newlines
}

VAR="some prior value which will get overwritten"

# you pass the name of the variable. VAR will be modified.
scan3 VAR

# newlines are also preserved.
echo "${VAR}==="

prints:

output

===

This form has a few advantages. Namely, it allows your function to modify the environment of the caller without using global variables everywhere.

Note: using namerefs can improve the performance of your program greatly if your functions rely heavily on bash builtins, because it avoids the creation of a subshell that is thrown away just after. This generally makes more sense for small functions reused often, e.g. functions ending in echo "$returnstring"

This is relevant. https://stackoverflow.com/a/38997681/5556676

I had this problem as well on two different Windows computers when communicating with a Arduino Leonardo. The reliable solution was:

• Find the COM port in device manager and open the device properties.
• Open the "Port Settings" tab, and click the advanced button.
• There, uncheck the box "Use FIFO buffers (required 16550 compatible UART), and press OK.

Unfortunately, I don't know what this feature does, or how it affects this issue. After several PC restarts and a dozen device connection cycles, this is the only thing that reliably fixed the issue.

The internals of the GUI system call that method, and they pass in the Graphics parameter as a graphics context onto which you can draw.