SyntaxFix.com - Programming Questions & Answers Hub For Beginners

In my case, it caused by application physical path point to a non-existent folder in IIS.

This should do the trick

df = data.frame(date=c("2012-02-01", "2012-02-01", "2012-02-02")) 
dow <- function(x) format(as.Date(x), "%A")
df$day <- dow(df$date)
df

#Returns:
        date       day
1 2012-02-01 Wednesday
2 2012-02-01 Wednesday
3 2012-02-02  Thursday

Thanks for enlightening us Cypawer.

I also tried this app https://play.google.com/store/apps/details?id=com.oneguyinabasement.leapwifi

and it worked flawlessly.

In Symfony 3.3 you can use

$projectRoot = $this->get('kernel')->getProjectDir();

to get the web/project root.

I see plots with the use of (.circle) but based on what you might want to do you can also try this out:

import matplotlib.pyplot as plt
import numpy as np

x = list(range(1,6))
y = list(range(10, 20, 2))

print(x, y)

for i, data in enumerate(zip(x,y)):
    j, k = data
    plt.scatter(j,k, marker = "o", s = ((i+1)**4)*50, alpha = 0.3)

centers = np.array([[5,18], [3,14], [7,6]])
m, n = make_blobs(n_samples=20, centers=[[5,18], [3,14], [7,6]], n_features=2, 
cluster_std = 0.4)
colors = ['g', 'b', 'r', 'm']

plt.figure(num=None, figsize=(7,6), facecolor='w', edgecolor='k')
plt.scatter(m[:,0], m[:,1])

for i in range(len(centers)):

    plt.scatter(centers[i,0], centers[i,1], color = colors[i], marker = 'o', s = 13000, alpha = 0.2)
    plt.scatter(centers[i,0], centers[i,1], color = 'k', marker = 'x', s = 50)

plt.savefig('plot.png')

if is not a loop structure, so you cannot "break out of it".

You can, however, break out of the foreach by simply calling break. In your example it has the desired effect:

$device = "wanted";
foreach($equipxml as $equip) {
    $current_device = $equip->xpath("name");
    if ( $current_device[0] == $device ) {
        // found a match in the file            
        $nodeid = $equip->id;

        // will leave the foreach loop and also the if statement
        break;
        some_function(); // never reached!
    }
    another_function();  // not executed after match/break
}

Just for completeness for others that stumble upon this question looking for an answer..

break takes an optional argument, which defines how many loop structures it should break. Example:

foreach (array('1','2','3') as $a) {
    echo "$a ";
    foreach (array('3','2','1') as $b) {
        echo "$b ";
        if ($a == $b) { 
            break 2;  // this will break both foreach loops
        }
    }
    echo ". ";  // never reached!
}
echo "!";

Resulting output:

1 3 2 1 !

Here is another way to format the query:

return $repository->createQueryBuilder('u')
            ->select('count(u.id)')
            ->getQuery()
            ->getSingleScalarResult();

Perhaps you were looking at the space complexity? That is O(n). The other complexities are as expected on the hash table entry. The search complexity approaches O(1) as the number of buckets increases. If at the worst case you have only one bucket in the hash table, then the search complexity is O(n).

Edit in response to comment I don't think it is correct to say O(1) is the average case. It really is (as the wikipedia page says) O(1+n/k) where K is the hash table size. If K is large enough, then the result is effectively O(1). But suppose K is 10 and N is 100. In that case each bucket will have on average 10 entries, so the search time is definitely not O(1); it is a linear search through up to 10 entries.

html, body {
    height:100%;
}
#wrapper {
    min-height:100%;
}

Borders of different colors. I used 3 items.

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape android:shape="rectangle">
            <solid android:color="@color/colorAccent" />
        </shape>
    </item>
    <item android:top="3dp">
        <shape android:shape="rectangle">
            <solid android:color="@color/light_grey" />
        </shape>
    </item>
    <item
        android:bottom="1dp"
        android:left="1dp"
        android:right="1dp"
        android:top="3dp">
        <shape android:shape="rectangle">
            <solid android:color="@color/colorPrimary" />
        </shape>
    </item>
</layer-list>

For anyone coming across this who is using Jest, because Jest does its own module caching, there's a built-in function for this - just make sure jest.resetModules runs eg. after each of your tests:

afterEach( function() {
  jest.resetModules();
});

Found this after trying to use decache like another answer suggested. Thanks to Anthony Garvan.

Function documentation here.

My approach is to scan the string and let the pointers point to every character after the deliminators(and the first character), at the same time assign the appearances of deliminator in string to '\0'.
First make a copy of original string(since it's constant), then get the number of splits by scan it pass it to pointer parameter len. After that, point the first result pointer to the copy string pointer, then scan the copy string: once encounter a deliminator, assign it to '\0' thus the previous result string is terminated, and point the next result string pointer to the next character pointer.

char** split(char* a_str, const char a_delim, int* len){
    char* s = (char*)malloc(sizeof(char) * strlen(a_str));
    strcpy(s, a_str);
    char* tmp = a_str;
    int count = 0;
    while (*tmp != '\0'){
        if (*tmp == a_delim) count += 1;
        tmp += 1;
    }
    *len = count;
    char** results = (char**)malloc(count * sizeof(char*));
    results[0] = s;
    int i = 1;
    while (*s!='\0'){
        if (*s == a_delim){
            *s = '\0';
            s += 1;
            results[i++] = s;
        }
        else s += 1;
    }
    return results;
}

You could use a literal eval:

>>> ast.literal_eval('0xdeadbeef')
3735928559

Or just specify the base as argument to int:

>>> int('deadbeef', 16)
3735928559

A trick that is not well known, if you specify the base 0 to int, then Python will attempt to determine the base from the string prefix:

>>> int("0xff", 0)
255
>>> int("0o644", 0)
420
>>> int("0b100", 0)
4
>>> int("100", 0)
100

Here is the solution , follow the below link Step by Step :

http://www.mkyong.com/webservices/jax-ws/suncertpathbuilderexception-unable-to-find-valid-certification-path-to-requested-target/

JAVA FILE : which is missing from the blog

/*
 * Copyright 2006 Sun Microsystems, Inc.  All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Sun Microsystems nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */



import java.io.*;
import java.net.URL;

import java.security.*;
import java.security.cert.*;

import javax.net.ssl.*;

public class InstallCert {

    public static void main(String[] args) throws Exception {
    String host;
    int port;
    char[] passphrase;
    if ((args.length == 1) || (args.length == 2)) {
        String[] c = args[0].split(":");
        host = c[0];
        port = (c.length == 1) ? 443 : Integer.parseInt(c[1]);
        String p = (args.length == 1) ? "changeit" : args[1];
        passphrase = p.toCharArray();
    } else {
        System.out.println("Usage: java InstallCert <host>[:port] [passphrase]");
        return;
    }

    File file = new File("jssecacerts");
    if (file.isFile() == false) {
        char SEP = File.separatorChar;
        File dir = new File(System.getProperty("java.home") + SEP
            + "lib" + SEP + "security");
        file = new File(dir, "jssecacerts");
        if (file.isFile() == false) {
        file = new File(dir, "cacerts");
        }
    }
    System.out.println("Loading KeyStore " + file + "...");
    InputStream in = new FileInputStream(file);
    KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());
    ks.load(in, passphrase);
    in.close();

    SSLContext context = SSLContext.getInstance("TLS");
    TrustManagerFactory tmf =
        TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
    tmf.init(ks);
    X509TrustManager defaultTrustManager = (X509TrustManager)tmf.getTrustManagers()[0];
    SavingTrustManager tm = new SavingTrustManager(defaultTrustManager);
    context.init(null, new TrustManager[] {tm}, null);
    SSLSocketFactory factory = context.getSocketFactory();

    System.out.println("Opening connection to " + host + ":" + port + "...");
    SSLSocket socket = (SSLSocket)factory.createSocket(host, port);
    socket.setSoTimeout(10000);
    try {
        System.out.println("Starting SSL handshake...");
        socket.startHandshake();
        socket.close();
        System.out.println();
        System.out.println("No errors, certificate is already trusted");
    } catch (SSLException e) {
        System.out.println();
        e.printStackTrace(System.out);
    }

    X509Certificate[] chain = tm.chain;
    if (chain == null) {
        System.out.println("Could not obtain server certificate chain");
        return;
    }

    BufferedReader reader =
        new BufferedReader(new InputStreamReader(System.in));

    System.out.println();
    System.out.println("Server sent " + chain.length + " certificate(s):");
    System.out.println();
    MessageDigest sha1 = MessageDigest.getInstance("SHA1");
    MessageDigest md5 = MessageDigest.getInstance("MD5");
    for (int i = 0; i < chain.length; i++) {
        X509Certificate cert = chain[i];
        System.out.println
            (" " + (i + 1) + " Subject " + cert.getSubjectDN());
        System.out.println("   Issuer  " + cert.getIssuerDN());
        sha1.update(cert.getEncoded());
        System.out.println("   sha1    " + toHexString(sha1.digest()));
        md5.update(cert.getEncoded());
        System.out.println("   md5     " + toHexString(md5.digest()));
        System.out.println();
    }

    System.out.println("Enter certificate to add to trusted keystore or 'q' to quit: [1]");
    String line = reader.readLine().trim();
    int k;
    try {
        k = (line.length() == 0) ? 0 : Integer.parseInt(line) - 1;
    } catch (NumberFormatException e) {
        System.out.println("KeyStore not changed");
        return;
    }

    X509Certificate cert = chain[k];
    String alias = host + "-" + (k + 1);
    ks.setCertificateEntry(alias, cert);

    OutputStream out = new FileOutputStream("jssecacerts");
    ks.store(out, passphrase);
    out.close();

    System.out.println();
    System.out.println(cert);
    System.out.println();
    System.out.println
        ("Added certificate to keystore 'jssecacerts' using alias '"
        + alias + "'");
    }

    private static final char[] HEXDIGITS = "0123456789abcdef".toCharArray();

    private static String toHexString(byte[] bytes) {
        StringBuilder sb = new StringBuilder(bytes.length * 3);
        for (int b : bytes) {
            b &= 0xff;
            sb.append(HEXDIGITS[b >> 4]);
            sb.append(HEXDIGITS[b & 15]);
            sb.append(' ');
        }
        return sb.toString();
    }

    private static class SavingTrustManager implements X509TrustManager {

    private final X509TrustManager tm;
    private X509Certificate[] chain;

    SavingTrustManager(X509TrustManager tm) {
        this.tm = tm;
    }

    public X509Certificate[] getAcceptedIssuers() {
        throw new UnsupportedOperationException();
    }

    public void checkClientTrusted(X509Certificate[] chain, String authType)
        throws CertificateException {
        throw new UnsupportedOperationException();
    }

    public void checkServerTrusted(X509Certificate[] chain, String authType)
        throws CertificateException {
        this.chain = chain;
        tm.checkServerTrusted(chain, authType);
    }
    }

}

Replace everything with the remote branch; but, only from the same commit your local branch is on:

git reset --hard origin/some-branch

OR, get the latest from the remote branch and replace everything:

git fetch origin some-branch
git reset --hard FETCH_HEAD

As an aside, if needed, you can wipe out untracked files & directories that you haven't committed yet:

git clean -fd

In my case on ubuntu 12.04 LTS, I had to change my HTC Incredible usb mode from charge to Media and then the device showed up under adb. Of course, debugging was already on in both cases.

YouTube supports a fairly easy to use iframe and url interface to embed videos, playlists and all user uploads to your channel: https://developers.google.com/youtube/player_parameters

For example this HTML will embed a player loaded with a playlist of all the videos uploaded to your channel. Replace YOURCHANNELNAME with the actual name of your channel:

<iframe src="http://www.youtube.com/embed/?listType=user_uploads&list=YOURCHANNELNAME" width="480" height="400"></iframe>

You can solve this with this simple construct:

class Program
{
    static void Main(string[] args)
    {
        Task.Run(async () =>
        {
            // Do any async anything you need here without worry
        }).GetAwaiter().GetResult();
    }
}

That will put everything you do out on the ThreadPool where you'd want it (so other Tasks you start/await don't attempt to rejoin a Thread they shouldn't), and wait until everything's done before closing the Console app. No need for special loops or outside libs.

Edit: Incorporate Andrew's solution for uncaught Exceptions.

Your syntax is pretty screwy.

Change this:

input:not(disabled)not:[type="submit"]:focus{

to:

input:not(:disabled):not([type="submit"]):focus{

Seems that many people don't realize :enabled and :disabled are valid CSS selectors...

select top 0 *
into #mytemptable
from myrealtable

Say you're dealing with some other delimiter, such as a \t tab, instead of a \n newline.

A more general approach to delimiters is the use of getc(), which grabs one character at a time.

Note that getc() returns an int, so that we can test for equality with EOF.

Secondly, we define an array line[BUFFER_MAX_LENGTH] of type char, in order to store up to BUFFER_MAX_LENGTH-1 characters on the stack (we have to save that last character for a \0 terminator character).

Use of an array avoids the need to use malloc and free to create a character pointer of the right length on the heap.

#define BUFFER_MAX_LENGTH 1024

int main(int argc, char* argv[])
{
    FILE *file = NULL;
    char line[BUFFER_MAX_LENGTH];
    int tempChar;
    unsigned int tempCharIdx = 0U;

    if (argc == 2)
         file = fopen(argv[1], "r");
    else {
         fprintf(stderr, "error: wrong number of arguments\n"
                         "usage: %s textfile\n", argv[0]);
         return EXIT_FAILURE;
    }

    if (!file) {
         fprintf(stderr, "error: could not open textfile: %s\n", argv[1]);
         return EXIT_FAILURE;
    }

    /* get a character from the file pointer */
    while(tempChar = fgetc(file))
    {
        /* avoid buffer overflow error */
        if (tempCharIdx == BUFFER_MAX_LENGTH) {
            fprintf(stderr, "error: line is too long. increase BUFFER_MAX_LENGTH.\n");
            return EXIT_FAILURE;
        }

        /* test character value */
        if (tempChar == EOF) {
            line[tempCharIdx] = '\0';
            fprintf(stdout, "%s\n", line);
            break;
        }
        else if (tempChar == '\n') {
            line[tempCharIdx] = '\0';
            tempCharIdx = 0U;
            fprintf(stdout, "%s\n", line);
            continue;
        }
        else
            line[tempCharIdx++] = (char)tempChar;
    }

    return EXIT_SUCCESS;
}

If you must use a char *, then you can still use this code, but you strdup() the line[] array, once it is filled up with a line's worth of input. You must free this duplicated string once you're done with it, or you'll get a memory leak:

#define BUFFER_MAX_LENGTH 1024

int main(int argc, char* argv[])
{
    FILE *file = NULL;
    char line[BUFFER_MAX_LENGTH];
    int tempChar;
    unsigned int tempCharIdx = 0U;
    char *dynamicLine = NULL;

    if (argc == 2)
         file = fopen(argv[1], "r");
    else {
         fprintf(stderr, "error: wrong number of arguments\n"
                         "usage: %s textfile\n", argv[0]);
         return EXIT_FAILURE;
    }

    if (!file) {
         fprintf(stderr, "error: could not open textfile: %s\n", argv[1]);
         return EXIT_FAILURE;
    }

    while(tempChar = fgetc(file))
    {
        /* avoid buffer overflow error */
        if (tempCharIdx == BUFFER_MAX_LENGTH) {
            fprintf(stderr, "error: line is too long. increase BUFFER_MAX_LENGTH.\n");
            return EXIT_FAILURE;
        }

        /* test character value */
        if (tempChar == EOF) {
            line[tempCharIdx] = '\0';
            dynamicLine = strdup(line);
            fprintf(stdout, "%s\n", dynamicLine);
            free(dynamicLine);
            dynamicLine = NULL;
            break;
        }
        else if (tempChar == '\n') {
            line[tempCharIdx] = '\0';
            tempCharIdx = 0U;
            dynamicLine = strdup(line);
            fprintf(stdout, "%s\n", dynamicLine);
            free(dynamicLine);
            dynamicLine = NULL;
            continue;
        }
        else
            line[tempCharIdx++] = (char)tempChar;
    }

    return EXIT_SUCCESS;
}

Here is an example I used to connect node.js to my Postgres database.

The interface in node.js that I used can be found here https://github.com/brianc/node-postgres

var pg = require('pg');
var conString = "postgres://YourUserName:YourPassword@localhost:5432/YourDatabase";

var client = new pg.Client(conString);
client.connect();

//queries are queued and executed one after another once the connection becomes available
var x = 1000;

while (x > 0) {
    client.query("INSERT INTO junk(name, a_number) values('Ted',12)");
    client.query("INSERT INTO junk(name, a_number) values($1, $2)", ['John', x]);
    x = x - 1;
}

var query = client.query("SELECT * FROM junk");
//fired after last row is emitted

query.on('row', function(row) {
    console.log(row);
});

query.on('end', function() {
    client.end();
});



//queries can be executed either via text/parameter values passed as individual arguments
//or by passing an options object containing text, (optional) parameter values, and (optional) query name
client.query({
    name: 'insert beatle',
    text: "INSERT INTO beatles(name, height, birthday) values($1, $2, $3)",
    values: ['George', 70, new Date(1946, 02, 14)]
});

//subsequent queries with the same name will be executed without re-parsing the query plan by postgres
client.query({
    name: 'insert beatle',
    values: ['Paul', 63, new Date(1945, 04, 03)]
});
var query = client.query("SELECT * FROM beatles WHERE name = $1", ['john']);

//can stream row results back 1 at a time
query.on('row', function(row) {
    console.log(row);
    console.log("Beatle name: %s", row.name); //Beatle name: John
    console.log("Beatle birth year: %d", row.birthday.getYear()); //dates are returned as javascript dates
    console.log("Beatle height: %d' %d\"", Math.floor(row.height / 12), row.height % 12); //integers are returned as javascript ints
});

//fired after last row is emitted
query.on('end', function() {
    client.end();
});

UPDATE:- THE query.on function is now deprecated and hence the above code will not work as intended. As a solution for this look at:- query.on is not a function

A trait is essentially PHP's implementation of a mixin, and is effectively a set of extension methods which can be added to any class through the addition of the trait. The methods then become part of that class' implementation, but without using inheritance.

From the PHP Manual (emphasis mine):

Traits are a mechanism for code reuse in single inheritance languages such as PHP. ... It is an addition to traditional inheritance and enables horizontal composition of behavior; that is, the application of class members without requiring inheritance.

An example:

trait myTrait {
    function foo() { return "Foo!"; }
    function bar() { return "Bar!"; }
}

With the above trait defined, I can now do the following:

class MyClass extends SomeBaseClass {
    use myTrait; // Inclusion of the trait myTrait
}

At this point, when I create an instance of class MyClass, it has two methods, called foo() and bar() - which come from myTrait. And - notice that the trait-defined methods already have a method body - which an Interface-defined method can't.

Additionally - PHP, like many other languages, uses a single inheritance model - meaning that a class can derive from multiple interfaces, but not multiple classes. However, a PHP class can have multiple trait inclusions - which allows the programmer to include reusable pieces - as they might if including multiple base classes.

A few things to note:

                      -----------------------------------------------
                      |   Interface   |  Base Class   |    Trait    |
                      ===============================================
> 1 per class         |      Yes      |       No      |     Yes     |
---------------------------------------------------------------------
Define Method Body    |      No       |       Yes     |     Yes     |
---------------------------------------------------------------------
Polymorphism          |      Yes      |       Yes     |     No      |
---------------------------------------------------------------------

Polymorphism:

In the earlier example, where MyClass extends SomeBaseClass, MyClass is an instance of SomeBaseClass. In other words, an array such as SomeBaseClass[] bases can contain instances of MyClass. Similarly, if MyClass extended IBaseInterface, an array of IBaseInterface[] bases could contain instances of MyClass. There is no such polymorphic construct available with a trait - because a trait is essentially just code which is copied for the programmer's convenience into each class which uses it.

Precedence:

As described in the Manual:

An inherited member from a base class is overridden by a member inserted by a Trait. The precedence order is that members from the current class override Trait methods, which in return override inherited methods.

So - consider the following scenario:

class BaseClass {
    function SomeMethod() { /* Do stuff here */ }
}

interface IBase {
    function SomeMethod();
}

trait myTrait {
    function SomeMethod() { /* Do different stuff here */ }
}

class MyClass extends BaseClass implements IBase {
    use myTrait;

    function SomeMethod() { /* Do a third thing */ }
}

When creating an instance of MyClass, above, the following occurs:

1. The Interface IBase requires a parameterless function called SomeMethod() to be provided.
2. The base class BaseClass provides an implementation of this method - satisfying the need.
3. The trait myTrait provides a parameterless function called SomeMethod() as well, which takes precedence over the BaseClass-version
4. The class MyClass provides its own version of SomeMethod() - which takes precedence over the trait-version.

Conclusion

1. An Interface can not provide a default implementation of a method body, while a trait can.
2. An Interface is a polymorphic, inherited construct - while a trait is not.
3. Multiple Interfaces can be used in the same class, and so can multiple traits.

I'm not convinced its a good idea to return image data in a REST service. It ties up your application server's memory and IO bandwidth. Much better to delegate that task to a proper web server that is optimized for this kind of transfer. You can accomplish this by sending a redirect to the image resource (as a HTTP 302 response with the URI of the image). This assumes of course that your images are arranged as web content.

Having said that, if you decide you really need to transfer image data from a web service you can do so with the following (pseudo) code:

@Path("/whatever")
@Produces("image/png")
public Response getFullImage(...) {

    BufferedImage image = ...;

    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    ImageIO.write(image, "png", baos);
    byte[] imageData = baos.toByteArray();

    // uncomment line below to send non-streamed
    // return Response.ok(imageData).build();

    // uncomment line below to send streamed
    // return Response.ok(new ByteArrayInputStream(imageData)).build();
}

Add in exception handling, etc etc.

Here is a way when you want to set a # of columns to NULL given their column names a function for your usage :)

deleteColsFromDataTable <- function (train, toDeleteColNames) {

       for (myNm in toDeleteColNames)

       train <- train [,(myNm):=NULL]

       return (train)
}

I have pulled my hair out with this error a few time. I have managed to make it sometime disappear by restarting Apache/Nginx.

So I fixed it the same way as above, by adding the following to the GEM file:

gem 'execjs'
gem 'therubyracer', :platforms => :ruby

and then I DELETED my gemfile.lock file and then reran "bundle install". I found only then did "bundle install" actually install the correct libraries etc.

This code will print an asterisk instead of every letter.

import sys
import msvcrt

passwor = ''
while True:
    x = msvcrt.getch()
    if x == '\r':
        break
    sys.stdout.write('*')
    passwor +=x

print '\n'+passwor

From version 4.2, the copyDatabase is deprecated. From now on we should use: mongodump and mongorestore.

Let's say we have a database named: old_name and we want to rename it to new_name.

First we have to dump the database:

mongodump --archive="old_name_dump.db" --db=old_name

If you have to authenticate as a user then use:

mongodump -u username --authenticationDatabase admin \
          --archive="old_name_dump.db" --db=old_name

Now we have our db dumped as a file named: old_name_dump.db.

To restore with a new name:

mongorestore --archive="old_name_dump.db" --nsFrom="old_name.*" --nsTo="new_name.*"

Again, if you need to be authenticated add this parameters to the command:

-u username --authenticationDatabase admin 

Reference: https://docs.mongodb.com/manual/release-notes/4.2-compatibility/#remove-support-for-the-copydb-and-clone-commands

Images have display: inline by default.
You might want to put the image inside the paragraph.
<p><img /></p>

Trust store generally (actually should only contain root CAs but this rule is violated in general) contains the certificates that of the root CAs (public CAs or private CAs). You can verify the list of certs in trust store using

keytool -list -v -keystore truststore.jks

This answer features:

• Using 'using' whenever possible (IDisposable interfaces)
• Using Object initializers
• Async Programming
• Extract SmtpConfig to external class (adjust it to your needs)

Here's the extracted code:

    public async Task SendAsync(string subject, string body, string to)
    {
        using (var message = new MailMessage(smtpConfig.FromAddress, to)
        {
            Subject = subject,
            Body = body,
            IsBodyHtml = true
        })
        {
            using (var client = new SmtpClient()
            {
                Port = smtpConfig.Port,
                DeliveryMethod = SmtpDeliveryMethod.Network,
                UseDefaultCredentials = false,
                Host = smtpConfig.Host,
                Credentials = new NetworkCredential(smtpConfig.User, smtpConfig.Password),
            })
            {
                await client.SendMailAsync(message);
            }
        }                                     
    }

Class SmtpConfig:

public class SmtpConfig
{
    public string Host { get; set; }
    public string User { get; set; }
    public string Password { get; set; }
    public int Port { get; set; }
    public string FromAddress { get; set; }
}

Memory management in Linux is a bit tricky to understand, and I can't say I fully understand it yet, but I'll try to share a little bit of my experience and knowledge.

Short answer to your question: Yes there are other stuff included than whats in the list.

What's being shown in your list is applications run in userspace. The kernel uses memory for itself and modules, on top of that it also has a lower limit of free memory that you can't go under. When you've reached that level it will try to free up resources, and when it can't do that anymore, you end up with an OOM problem.

From the last line of your list you can read that the kernel reports a total-vm usage of: 1498536kB (1,5GB), where the total-vm includes both your physical RAM and swap space. You stated you don't have any swap but the kernel seems to think otherwise since your swap space is reported to be full (Total swap = 524284kB, Free swap = 0kB) and it reports a total vmem size of 1,5GB.

Another thing that can complicate things further is memory fragmentation. You can hit the OOM killer when the kernel tries to allocate lets say 4096kB of continous memory, but there are no free ones availible.

Now that alone probably won't help you solve the actual problem. I don't know if it's normal for your program to require that amount of memory, but I would recommend to try a static code analyzer like cppcheck to check for memory leaks or file descriptor leaks. You could also try to run it through Valgrind to get a bit more information out about memory usage.

day1= (int)ClockInfoFromSystem.DayOfWeek;

You use

#main_text .title {
  /* Properties */
}

If you just put a space between the selectors, styles will apply to all children (and children of children) of the first. So in this case, any child element of #main_text with the class name title. If you use > instead of a space, it will only select the direct child of the element, and not children of children, e.g.:

#main_text > .title {
  /* Properties */
}

Either will work in this case, but the first is more typically used.

Windows CMD -> set NODE_ENV=production

Windows Powershell -> $env:NODE_ENV="production"

MAC -> export NODE_ENV=production

In languages like C curly braces ({}) are used to create program blocks used in flow control. In Python, curly braces are used to define a data structure called a dictionary (a key/value mapping), while white space indentation is used to define program blocks.

I faced exactly the same issue in a Spring web app. In fact, I had removed spring-security by commenting the config annotation:

// @ImportResource({"/WEB-INF/spring-security.xml"})

but I had forgotten to remove the corresponding filters in web.xml:

<!-- Filters --> 
<filter>
    <filter-name>springSecurityFilterChain</filter-name>
    <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
</filter>

<filter-mapping>
    <filter-name>springSecurityFilterChain</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

Commenting filters solved the issue.

Try this.

var lines = $('textarea').val().split('\n');
for(var i = 0;i < lines.length;i++){
    //code here using lines[i] which will give you each line
}

Based on my experience, the numpy docstring conventions (PEP257 superset) are the most widely-spread followed conventions that are also supported by tools, such as Sphinx.

One example:

Parameters
----------
x : type
    Description of parameter `x`.

With recent browsers you can use the HTML5 download attribute as well:

<a download="quot.pdf" href="../doc/quot.pdf">Click here to Download quotation</a>

It is supported by most of the recent browsers except MSIE11. You can use a polyfill, something like this (note that this is for data uri only, but it is a good start):

(function (){

    addEvent(window, "load", function (){
        if (isInternetExplorer())
            polyfillDataUriDownload();
    });

    function polyfillDataUriDownload(){
        var links = document.querySelectorAll('a[download], area[download]');
        for (var index = 0, length = links.length; index<length; ++index) {
            (function (link){
                var dataUri = link.getAttribute("href");
                var fileName = link.getAttribute("download");
                if (dataUri.slice(0,5) != "data:")
                    throw new Error("The XHR part is not implemented here.");
                addEvent(link, "click", function (event){
                    cancelEvent(event);
                    try {
                        var dataBlob = dataUriToBlob(dataUri);
                        forceBlobDownload(dataBlob, fileName);
                    } catch (e) {
                        alert(e)
                    }
                });
            })(links[index]);
        }
    }

    function forceBlobDownload(dataBlob, fileName){
        window.navigator.msSaveBlob(dataBlob, fileName);
    }

    function dataUriToBlob(dataUri) {
        if  (!(/base64/).test(dataUri))
            throw new Error("Supports only base64 encoding.");
        var parts = dataUri.split(/[:;,]/),
            type = parts[1],
            binData = atob(parts.pop()),
            mx = binData.length,
            uiArr = new Uint8Array(mx);
        for(var i = 0; i<mx; ++i)
            uiArr[i] = binData.charCodeAt(i);
        return new Blob([uiArr], {type: type});
    }

    function addEvent(subject, type, listener){
        if (window.addEventListener)
            subject.addEventListener(type, listener, false);
        else if (window.attachEvent)
            subject.attachEvent("on" + type, listener);
    }

    function cancelEvent(event){
        if (event.preventDefault)
            event.preventDefault();
        else
            event.returnValue = false;
    }

    function isInternetExplorer(){
        return /*@cc_on!@*/false || !!document.documentMode;
    }
    
})();

On Linux, Unix, Git Bash, or Cygwin, try:

rm -f .git/index.lock

On Windows Command Prompt, try:

del .git\index.lock

For Windows:

• From a PowerShell console opened as administrator, try

  rm -Force ./.git/index.lock
  

• If that does not work, you must kill all git.exe processes

  taskkill /F /IM git.exe
  

  SUCCESS: The process "git.exe" with PID 20448 has been terminated.
  SUCCESS: The process "git.exe" with PID 11312 has been terminated.
  SUCCESS: The process "git.exe" with PID 23868 has been terminated.
  SUCCESS: The process "git.exe" with PID 27496 has been terminated.
  SUCCESS: The process "git.exe" with PID 33480 has been terminated.
  SUCCESS: The process "git.exe" with PID 28036 has been terminated. \

  rm -Force ./.git/index.lock
  

My full example is here, but I will provide a summary below.

Layout

Add a .swift and .xib file each with the same name to your project. The .xib file contains your custom view layout (using auto layout constraints preferably).

Make the swift file the xib file's owner.

Code

Add the following code to the .swift file and hook up the outlets and actions from the .xib file.

import UIKit
class ResuableCustomView: UIView {

    let nibName = "ReusableCustomView"
    var contentView: UIView?

    @IBOutlet weak var label: UILabel!
    @IBAction func buttonTap(_ sender: UIButton) {
        label.text = "Hi"
    }

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

        guard let view = loadViewFromNib() else { return }
        view.frame = self.bounds
        self.addSubview(view)
        contentView = view
    }

    func loadViewFromNib() -> UIView? {
        let bundle = Bundle(for: type(of: self))
        let nib = UINib(nibName: nibName, bundle: bundle)
        return nib.instantiate(withOwner: self, options: nil).first as? UIView
    }
}

Use it

Use your custom view anywhere in your storyboard. Just add a UIView and set the class name to your custom class name.

For a while Christopher Swasey's approach was the best approach I had found. I asked a couple of the senior devs on my team about it and one of them had the perfect solution! It satisfies every one of the concerns that Christopher Swasey so eloquently addressed and it doesn't require boilerplate subclass code(my main concern with his approach). There is one gotcha, but other than that it is fairly intuitive and easy to implement.

1. Create a custom UIView class in a .swift file to control your xib. i.e. MyCustomClass.swift
2. Create a .xib file and style it as you want. i.e. MyCustomClass.xib
3. Set the File's Owner of the .xib file to be your custom class (MyCustomClass)
4. GOTCHA: leave the class value (under the identity Inspector) for your custom view in the .xib file blank. So your custom view will have no specified class, but it will have a specified File's Owner.
5. Hook up your outlets as you normally would using the Assistant Editor.
   • NOTE: If you look at the Connections Inspector you will notice that your Referencing Outlets do not reference your custom class (i.e. MyCustomClass), but rather reference File's Owner. Since File's Owner is specified to be your custom class, the outlets will hook up and work propery.
6. Make sure your custom class has @IBDesignable before the class statement.
7. Make your custom class conform to the NibLoadable protocol referenced below.
   • NOTE: If your custom class .swift file name is different from your .xib file name, then set the nibName property to be the name of your .xib file.
8. Implement required init?(coder aDecoder: NSCoder) and override init(frame: CGRect) to call setupFromNib() like the example below.
9. Add a UIView to your desired storyboard and set the class to be your custom class name (i.e. MyCustomClass).
10. Watch IBDesignable in action as it draws your .xib in the storyboard with all of it's awe and wonder.

Here is the protocol you will want to reference:

public protocol NibLoadable {
    static var nibName: String { get }
}

public extension NibLoadable where Self: UIView {

    public static var nibName: String {
        return String(describing: Self.self) // defaults to the name of the class implementing this protocol.
    }

    public static var nib: UINib {
        let bundle = Bundle(for: Self.self)
        return UINib(nibName: Self.nibName, bundle: bundle)
    }

    func setupFromNib() {
        guard let view = Self.nib.instantiate(withOwner: self, options: nil).first as? UIView else { fatalError("Error loading \(self) from nib") }
        addSubview(view)
        view.translatesAutoresizingMaskIntoConstraints = false
        view.leadingAnchor.constraint(equalTo: self.safeAreaLayoutGuide.leadingAnchor, constant: 0).isActive = true
        view.topAnchor.constraint(equalTo: self.safeAreaLayoutGuide.topAnchor, constant: 0).isActive = true
        view.trailingAnchor.constraint(equalTo: self.safeAreaLayoutGuide.trailingAnchor, constant: 0).isActive = true
        view.bottomAnchor.constraint(equalTo: self.safeAreaLayoutGuide.bottomAnchor, constant: 0).isActive = true
    }
}

And here is an example of MyCustomClass that implements the protocol (with the .xib file being named MyCustomClass.xib):

@IBDesignable
class MyCustomClass: UIView, NibLoadable {

    @IBOutlet weak var myLabel: UILabel!

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

    override init(frame: CGRect) {
        super.init(frame: frame)
        setupFromNib()
    }

}

NOTE: If you miss the Gotcha and set the class value inside your .xib file to be your custom class, then it will not draw in the storyboard and you will get a EXC_BAD_ACCESS error when you run the app because it gets stuck in an infinite loop of trying to initialize the class from the nib using the init?(coder aDecoder: NSCoder) method which then calls Self.nib.instantiate and calls the init again.

char a[2] defines an array of char's. a is a pointer to the memory at the beginning of the array and using == won't actually compare the contents of a with 'ab' because they aren't actually the same types, 'ab' is integer type. Also 'ab' should be "ab" otherwise you'll have problems here too. To compare arrays of char you'd want to use strcmp.

Something that might be illustrative is looking at the typeid of 'ab':

#include <iostream>
#include <typeinfo>
using namespace std;
int main(){
    int some_int =5;
    std::cout << typeid('ab').name() << std::endl;
    std::cout << typeid(some_int).name() << std::endl;
    return 0;
}

on my system this returns:

i
i

showing that 'ab' is actually evaluated as an int.

If you were to do the same thing with a std::string then you would be dealing with a class and std::string has operator == overloaded and will do a comparison check when called this way.

If you wish to compare the input with the string "ab" in an idiomatic c++ way I suggest you do it like so:

#include <iostream>
#include <string>
using namespace std;
int main(){
    string a;
    cout<<"enter ab ";
    cin>>a;
    if(a=="ab"){
         cout<<"correct";
    }
    return 0;
}

This one is due to:

if(a=='ab') , here, a is const char* type (ie : array of char)

'ab' is a constant value,which isn't evaluated as string (because of single quote) but will be evaluated as integer.

Since char is a primitive type inherited from C, no operator == is defined.

the good code should be:

if(strcmp(a,"ab")==0) , then you'll compare a const char* to another const char* using strcmp.

Try trimming the string to make sure there is no extra white space:

Cursor c = db.rawQuery("SELECT * FROM tbl1 WHERE TRIM(name) = '"+name.trim()+"'", null);

Also use c.moveToFirst() like @thinksteep mentioned.

This is a complete code for select statements.

SQLiteDatabase db = this.getReadableDatabase();
Cursor c = db.rawQuery("SELECT column1,column2,column3 FROM table ", null);
if (c.moveToFirst()){
    do {
        // Passing values 
        String column1 = c.getString(0);
        String column2 = c.getString(1);
        String column3 = c.getString(2); 
        // Do something Here with values
    } while(c.moveToNext());
}
c.close();
db.close();

Based on generality of this question, I think, that you'll need to setup your own HTTPS proxy on some server online. Do the following steps:

• Prepare your proxy server - install IIS, Apache
• Get valid SSL certificate to avoid security errors (free from startssl.com for example)
• Write a wrapper, which will download insecure content (how to below)
• From your site/app get https://yourproxy.com/?page=http://insecurepage.com

If you simply download remote site content via file_get_contents or similiar, you can still have insecure links to content. You'll have to find them with regex and also replace. Images are hard to solve, but Ï found workaround here: http://foundationphp.com/tutorials/image_proxy.php

Note: While this solution may have worked in some browsers when it was written in 2014, it no longer works. Navigating or redirecting to an HTTP URL in an iframe embedded in an HTTPS page is not permitted by modern browsers, even if the frame started out with an HTTPS URL.

The best solution I created is to simply use google as the ssl proxy...

https://www.google.com/search?q=%http://yourhttpsite.com&btnI=Im+Feeling+Lucky

Tested and works in firefox.

Other Methods:

• Use a Third party such as embed.ly (but it it really only good for well known http APIs).

• Create your own redirect script on an https page you control (a simple javascript redirect on a relative linked page should do the trick. Something like: (you can use any langauge/method)

  https://example.com That has a iframe linking to...

  https://example.com/utilities/redirect.html Which has a simple js redirect script like...

  document.location.href ="http://thenonsslsite.com";

• Alternatively, you could add an RSS feed or write some reader/parser to read the http site and display it within your https site.

• You could/should also recommend to the http site owner that they create an ssl connection. If for no other reason than it increases seo.

Unless you can get the http site owner to create an ssl certificate, the most secure and permanent solution would be to create an RSS feed grabing the content you need (presumably you are not actually 'doing' anything on the http site -that is to say not logging in to any system).

The real issue is that having http elements inside a https site represents a security issue. There are no completely kosher ways around this security risk so the above are just current work arounds.

Note, that you can disable this security measure in most browsers (yourself, not for others). Also note that these 'hacks' may become obsolete over time.

Because % is only defined for integer types. That's the modulus operator.

5.6.2 of the standard:

The operands of * and / shall have arithmetic or enumeration type; the operands of % shall have integral or enumeration type. [...]

As Oli pointed out, you can use fmod(). Don't forget to include math.h.

When a module is loaded from a file in Python, __file__ is set to its path. You can then use that with other functions to find the directory that the file is located in.

Taking your examples one at a time:

A = os.path.join(os.path.dirname(__file__), '..')
# A is the parent directory of the directory where program resides.

B = os.path.dirname(os.path.realpath(__file__))
# B is the canonicalised (?) directory where the program resides.

C = os.path.abspath(os.path.dirname(__file__))
# C is the absolute path of the directory where the program resides.

You can see the various values returned from these here:

import os
print(__file__)
print(os.path.join(os.path.dirname(__file__), '..'))
print(os.path.dirname(os.path.realpath(__file__)))
print(os.path.abspath(os.path.dirname(__file__)))

and make sure you run it from different locations (such as ./text.py, ~/python/text.py and so forth) to see what difference that makes.

I just want to address some confusion first. __file__ is not a wildcard it is an attribute. Double underscore attributes and methods are considered to be "special" by convention and serve a special purpose.

http://docs.python.org/reference/datamodel.html shows many of the special methods and attributes, if not all of them.

In this case __file__ is an attribute of a module (a module object). In Python a .py file is a module. So import amodule will have an attribute of __file__ which means different things under difference circumstances.

Taken from the docs:

__file__ is the pathname of the file from which the module was loaded, if it was loaded from a file. The __file__ attribute is not present for C modules that are statically linked into the interpreter; for extension modules loaded dynamically from a shared library, it is the pathname of the shared library file.

In your case the module is accessing it's own __file__ attribute in the global namespace.

To see this in action try:

# file: test.py

print globals()
print __file__

And run:

python test.py

{'__builtins__': <module '__builtin__' (built-in)>, '__name__': '__main__', '__file__':
 'test_print__file__.py', '__doc__': None, '__package__': None}
test_print__file__.py

I think this wont be true for all the cases. Because css will download parallel but js cant. Consider for the same case,

Instead of having single css, take 2 or 3 css files and try it out these ways,

1) css..css..js 2) css..js..css 3) js..css..css

I'm sure css..css..js will give better result than all others.

what worked for me

chgrp Users FOLDER

chmod 600 FOLDER

It seems to me, this is a cross-domain issue since you're not allowed to make a request to a different domain.

You have to find solutions to this problem: - Use a proxy script, running on your server that will forward your request and will handle the response sending it to the browser Or - The service you're making the request should have JSONP support. This is a cross-domain technique. You might want to read this http://en.wikipedia.org/wiki/JSONP

The caller-saved / callee-saved terminology is based on a pretty braindead inefficient model of programming where callers actually do save/restore all the call-clobbered registers (instead of keeping long-term-useful values elsewhere), and callees actually do save/restore all the call-preserved registers (instead of just not using some or any of them).

Or you have to understand that "caller-saved" means "saved somehow if you want the value later".

In reality, efficient code lets values get destroyed when they're no longer needed. Compilers typically make functions that save a few call-preserved registers at the start of a function (and restore them at the end). Inside the function, they use those regs for values that need to survive across function calls.

I prefer "call-preserved" vs. "call-clobbered", which are unambiguous and self-describing once you've heard of the basic concept, and don't require any serious mental gymnastics to think about from the caller's perspective or the callee's perspective. (Both terms are from the same perspective).

Plus, these terms differ by more than one letter.

The terms volatile / non-volatile are pretty good, by analogy with storage which loses its value on power-loss or not, (like DRAM vs. Flash). But the C volatile keyword has a totally different technical meaning, so that's a downside to "(non)-volatile" when describing C calling conventions.

• Call-clobbered, aka caller-saved or volatile registers are good for scratch / temporary values that aren't needed after the next function call.

From the callee's perspective, your function can freely overwrite (aka clobber) these registers without saving/restoring.

From a caller's perspective, call foo destroys (aka clobbers) all the call-clobbered registers, or at least you have to assume it does.

You can write private helper functions that have a custom calling convention, e.g. you know they don't modify a certain register. But if all you know (or want to assume or depend on) is that the target function follows the normal calling convention, then you have to treat a function call as if it does destroy all the call-clobbered registers. That's literally what the name come from: a call clobbers those registers.

Some compilers that do inter-procedural optimization can also create internal-use-only definitions of functions that don't follow the ABI, using a custom calling convention.

• Call-preserved, aka callee-saved or non-volatile registers keep their values across function calls. This is useful for loop variables in a loop that makes function calls, or basically anything in a non-leaf function in general.

From a callee's perspective, these registers can't be modified unless you save the original value somewhere so you can restore it before returning. Or for registers like the stack pointer (which is almost always call-preserved), you can subtract a known offset and add it back again before returning, instead of actually saving the old value anywhere. i.e. you can restore it by dead reckoning, unless you allocate a runtime-variable amount of stack space. Then typically you restore the stack pointer from another register.

A function that can benefit from using a lot of registers can save/restore some call-preserved registers just so it can use them as more temporaries, even if it doesn't make any function calls. Normally you'd only do this after running out of call-clobbered registers to use, because save/restore typically costs a push/pop at the start/end of the function. (Or if your function has multiple exit paths, a pop in each of them.)

The name "caller-saved" is misleading: you don't have to specially save/restore them. Normally you arrange your code to have values that need to survive a function call in call-preserved registers, or somewhere on the stack, or somewhere else that you can reload from. It's normal to let a call destroy temporary values.

An ABI or calling convention defines which are which

See for example What registers are preserved through a linux x86-64 function call for the x86-64 System V ABI.

Also, arg-passing registers are always call-clobbered in all function-calling conventions I'm aware of. See Are rdi and rsi caller saved or callee saved registers?

But system-call calling conventions typically make all the registers except the return value call-preserved. (Usually including even condition-codes / flags.) See What are the calling conventions for UNIX & Linux system calls on i386 and x86-64

npm install --production is the right way of installing node modules which are required for production. Check the documentation for more details

At my Version the function to get the lenght or size was Count()

You're Welcome, hope it help someone.

function _arrayBufferToBase64( buffer ) {
    var binary = '';
    var bytes = new Uint8Array( buffer );
    var len = bytes.byteLength;
    for (var i = 0; i < len; i++) {
        binary += String.fromCharCode( bytes[ i ] );
    }
    return window.btoa( binary );
}

but, non-native implementations are faster e.g. https://gist.github.com/958841 see http://jsperf.com/encoding-xhr-image-data/6

Here is a more complete example.

Autowire Environment

First you will want to autowire the environment bean.

@Autowired
private Environment environment;

Check if Profiles exist in Active Profiles

Then you can use getActiveProfiles() to find out if the profile exists in the list of active profiles. Here is an example that takes the String[] from getActiveProfiles(), gets a stream from that array, then uses matchers to check for multiple profiles(Case-Insensitive) which returns a boolean if they exist.

//Check if Active profiles contains "local" or "test"
if(Arrays.stream(environment.getActiveProfiles()).anyMatch(
   env -> (env.equalsIgnoreCase("test") 
   || env.equalsIgnoreCase("local")) )) 
{
   doSomethingForLocalOrTest();
}
//Check if Active profiles contains "prod"
else if(Arrays.stream(environment.getActiveProfiles()).anyMatch(
   env -> (env.equalsIgnoreCase("prod")) )) 
{
   doSomethingForProd();
}

You can also achieve similar functionality using the annotation @Profile("local") Profiles allow for selective configuration based on a passed-in or environment parameter. Here is more information on this technique: Spring Profiles

if you want the color to change when you have simply add the :hover pseudo

div.e:hover {
    background-color:red;
}

In Eclipse:
Project -> properties -> java Build Path -> libraries

Remove existing JRE System Library, then Add Library -> JRE System library -> next -> ok

Error will be removed.

You are on Symfony, think "Dependency Injection" ^^

In all my SF project, I do in parameters.yml:

web_dir: "%kernel.root_dir%/../web"

So I can safely use this parameter within controller:

$this->getParameter('web_dir');

JSON

An alternative Solution could be converting your list in the JSON format and print the Json-String. The advantage is a well formatted and readable Object-String without a need of implementing the toString(). Additionaly it works for any other Object or Collection on the fly.

Example using Google's Gson:

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;

...
public static void printJsonString(Object o) {
    GsonBuilder gsonBuilder = new GsonBuilder();
    /*
     * Some options for GsonBuilder like setting dateformat or pretty printing
     */
    Gson gson = gsonBuilder.create();
    String json= gson.toJson(o);
    System.out.println(json);
}

It's creating the file in the same directory as your script. Try this instead.

$content = "some text here";
$fp = fopen($_SERVER['DOCUMENT_ROOT'] . "/myText.txt","wb");
fwrite($fp,$content);
fclose($fp);

you can put in a table cell and then align the cell content.

<table>
   <tr>
     <td align="center">
        <input type="button" value="Some Button">
     </td>
   </tr>
</table>

try this

counter = 0

def increment():
  global counter
  counter += 1

increment()

string[] thisArray = myString.Split('/');//<string1/string2/string3/--->     
List<string> myList = new List<string>(); //make a new string list    
myList.AddRange(thisArray);    

Use AddRange to pass string[] and get a string list.

Just add this one line:

    .your-class {
        height: 100vh;
    }

vh is viewport height. This will automatically scale to fit the device' browser window.

Check more here: Make div 100% height of browser window