If you just want to change file permissions, you want to be careful about using -R on chmod since it will change anything, files or folders. If you are doing a relative change (like adding write permission for everyone), you can do this:

sudo chmod -R a+w /var/www

But if you want to use the literal permissions of read/write, you may want to select files versus folders:

sudo find /var/www -type f -exec chmod 666 {} \;

(Which, by the way, for security reasons, I wouldn't recommend either of these.)

Or for folders:

sudo find /var/www -type d -exec chmod 755 {} \;

From help set :

  -e  Exit immediately if a command exits with a non-zero status.

But it's considered bad practice by some (bash FAQ and irc freenode #bash FAQ authors). It's recommended to use:

trap 'do_something' ERR

to run do_something function when errors occur.

See http://mywiki.wooledge.org/BashFAQ/105

If you just want to get the information of current directory, you can type:

pwd

and you don't need to use the Nautilus, or you can use a teamviewer software to remote connect to the computer, you can get everything you want.

This webpage have an explanation and a solution.

The solution is:

To fix this problem the behavior of the kernel has to be changed, so it will no longer overcommit the memory for application requests. Finally I have included those mentioned values into the /etc/sysctl.conf file, so they get automatically applied on start-up:

vm.overcommit_memory = 2

vm.overcommit_ratio = 80

u could try this it produces randomly generated array of true and false :

a=[bool(i) for i in np.array(np.random.randint(0,2,10))]

out: [True, True, True, True, True, False, True, False, True, False]

You can also use the [Required] data annotation attribute to solve this:

public class Foo
{
    public string FooId { get; set; }

    public Boo Boo { get; set; }
}

public class Boo
{
    public string BooId { get; set; }

    [Required]
    public Foo Foo {get; set; }
}

Foo is required for Boo.

I guess ssh is the best secured way for this, for example :

ssh -OPTIONS -p SSH_PORT user@remote_server "remote_command1; remote_command2; remote_script.sh"  

where the OPTIONS have to be deployed according to your specific needs (for example, binding to ipv4 only) and your remote command could be starting your tomcat daemon.

Note:
If you do not want to be prompt at every ssh run, please also have a look to ssh-agent, and optionally to keychain if your system allows it. Key is... to understand the ssh keys exchange process. Please take a careful look to ssh_config (i.e. the ssh client config file) and sshd_config (i.e. the ssh server config file). Configuration filenames depend on your system, anyway you'll find them somewhere like /etc/sshd_config. Ideally, pls do not run ssh as root obviously but as a specific user on both sides, servers and client.

Some extra docs over the source project main pages :

ssh and ssh-agent
man ssh

http://www.snailbook.com/index.html
https://help.ubuntu.com/community/SSH/OpenSSH/Configuring

keychain
http://www.gentoo.org/doc/en/keychain-guide.xml
an older tuto in French (by myself :-) but might be useful too :
http://hornetbzz.developpez.com/tutoriels/debian/ssh/keychain/

If you're trying to do this from within Excel (rather than programmatically), follow these steps:

1. From the "Orb" menu on the ribbon, click the "Excel Options" button near the bottom of the menu.

2. In the list of choices at the left, select "Advanced".

3. Scroll down until you see the heading "Display options for this worksheet".

4. Select the checkbox labeled "Show guidelines".

x ||= y

is

x || x = y

"if x is false or undefined, then x point to y"

Insert "checkbox". Every time you check or uncheck the box the sheet recalculates. If you put the text size for the checkbox at 2, the color at almost black and the cell shade to black, it becomes a button that recalculates.

You can't set a favicon from CSS - if you want to do this explicitly you have to do it in the markup as you described.

Most browsers will, however, look for a favicon.ico file on the root of the web site - so if you access http://example.com most browsers will look for http://example.com/favicon.ico automatically.

If you don't want to set a background property then you can't set the src attribute of an image using only CSS.

Alternatively you can use JavaScript to do such a thing.

Here is some code. It uses 2 classes (Card.java and Deck.java) to accomplish this issue, and to top it off it auto sorts it for you when you create the deck object. :)

import java.util.*;

public class deck2 {
    ArrayList<Card> cards = new ArrayList<Card>();

    String[] values = {"A","2","3","4","5","6","7","8","9","10","J","Q","K"};
    String[] suit = {"Club", "Spade", "Diamond", "Heart"};

    static boolean firstThread = true;
    public deck2(){
        for (int i = 0; i<suit.length; i++) {
            for(int j=0; j<values.length; j++){
                this.cards.add(new Card(suit[i],values[j]));
            }
        }
        //shuffle the deck when its created
        Collections.shuffle(this.cards);

    }

    public ArrayList<Card> getDeck(){
        return cards;
    }

    public static void main(String[] args){
        deck2 deck = new deck2();

        //print out the deck.
        System.out.println(deck.getDeck());
    }

}


//separate class

public class Card {


    private String suit;
    private String value;


    public Card(String suit, String value){
        this.suit = suit;
        this.value = value;
    }
    public Card(){}
    public String getSuit(){
        return suit;
    }
    public void setSuit(String suit){
        this.suit = suit;
    }
    public String getValue(){
        return value;
    }
    public void setValue(String value){
        this.value = value;
    }

    public String toString(){
        return "\n"+value + " of "+ suit;
    }
}

jQuery's :selected selector is probably what you are looking for.

While it is true that you cannot change the type of the column after the DataTable is filled, you can change it after you call FillSchema, but before you call Fill. For example, say the 3rd column is the one you want to convert from double to Int32, you could use:

adapter.FillSchema(table, SchemaType.Source);
table.Columns[2].DataType = typeof (Int32);
adapter.Fill(table);

There is another chance, you might have changed Junit Test from lower version(e.g. Junit 3) to Junit 4 . Is so follow below steps:-

1. Right Click on class
2. Select Run as >> "Run Configurations"
3. Check your "Test Runner" option in new window
4. If it not same as maven change it for example change it as Junit 4.

1. Press Windows+R, and type regedit.

2. Go to

    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\HTTP
   

   Change the value of Start to 4, which means disabled.

3. Reboot your computer.

Other times you might have installed Java 7 and 8 both or twice, and from Add/remove programs unistall one of them and it should work.

When you upload your build from Application loader or directly from your xcode to App Store and it is not showing even on multiple uploads with different build version then

1. Open your .plist file and check whether there is any key string starting with "Privacy - ........."
2. If that key string value is empty, then Add some string.
   example, for me i was using camera, photo Library, Microphone and Location.
   For my project i added the string as follows
   a. This app requires access to the Camera.
   b. This app requires access to the Photo Library.
   c. This app requires access to Microphone of your device.
   d. This app requires access to your Location.
   e. This app requires access to the Bluetooth.
3. Now upload the build it will get Accepted.

Note: This permission string is mandatory from iOS 10.

Once you have add your layout with at least one widget in it, select your window and click the "Update" button of QtDesigner. The interface will be resized at the most optimized size and your layout will fit the whole window. Then when resizing the window, the layout will be resized in the same way.

Converting a varchar value into an int fails when the value includes a decimal point to prevent loss of data.

If you convert to a decimal or float value first, then convert to int, the conversion works.

Either example below will return 7082:

SELECT CONVERT(int, CONVERT(decimal(12,7), '7082.7758172'));
SELECT CAST(CAST('7082.7758172' as float) as int);

Be aware that converting to a float value may result, in rare circumstances, in a loss of precision. I would tend towards using a decimal value, however you'll need to specify precision and scale values that make sense for the varchar data you're converting.

Try this jobber

String stringy =null;
 byte[] buffer =  new byte[100000];
            for (int i = 0; i < buffer.length; i++) {
            buffer[i] =0;

        }
            stringy =StringUtils.toAsciiString(buffer);

This Statement used in Angular2 Beta version.....

Hereafter use let instead of #

let keyword is used to declare local variable

You could install Web Tool Platform on top of your current installation to help you learn about Java EE. Download the Web Tools Platform by using Eclipse Software Update (Instruction at http://download.eclipse.org/webtools/updates/). It has features to get you going with learning Java EE. You could learn more about Web Tools Platform at http://www.eclipse.org/webtools/

This worked for me:

https://blog.dotkam.com/2007/04/10/mysql-reset-lost-root-password/

Step 1: Stop MySQL daemon if it is currently running

  ps -ef | grep mysql      - checks if mysql/mysqld is one of the running processes.

  pkill mysqld             - kills the daemon, if it is running.

Step 2: Run MySQL safe daemon with skipping grant tables

  mysqld_safe --skip-grant-tables &

  mysql -u root mysql

Step 3: Login to MySQL as root with no password

  mysql -u root mysql

Step 4: Run UPDATE query to reset the root password

  UPDATE user SET password=PASSWORD("value=42") WHERE user="root";
  FLUSH PRIVILEGES;

In MySQL 5.7, the 'password' field was removed, now the field name is 'authentication_string':

  UPDATE user SET authentication_string=PASSWORD("42") WHERE 
  user="root";
  FLUSH PRIVILEGES;

Step 5: Stop MySQL safe daemon

Step 6: Start MySQL daemon

I've been swearing at this for a while. Zoom is definitely not the solutions, it works in chrome, it works partially in IE but moves the entire html div, firefox doesnt do a thing.

My solution that worked for me was using both a scaling and a translation, and also adding the original height and weight and then setting the height and weight of the div itself:

#miniPreview {
transform: translate(-710px, -1000px) rotate(0rad) skewX(0rad) scale(0.3, 0.3);
transform-origin: 1010px 1429px 0px;
width: 337px;
height: 476px;

Obviously change these to your own needs. It gave me the same result in all browsers.

Try this (LINQ method syntax):

string[] columnNames = dt.Columns.Cast<DataColumn>()
                                 .Select(x => x.ColumnName)
                                 .ToArray();  

or in LINQ Query syntax:

string[] columnNames = (from dc in dt.Columns.Cast<DataColumn>()
                        select dc.ColumnName).ToArray();

Cast is required, because Columns is of type DataColumnCollection which is a IEnumerable, not IEnumerable<DataColumn>. The other parts should be obvious.

You can use the way like @Florin Ghita has suggested. But remember dbms_lob.substr has a limit of 4000 characters in the function For example :

dbms_lob.substr(clob_value_column,4000,1)

Otherwise you will find ORA-22835 (buffer too small)

You can also use the other sql way :

SELECT * FROM   your_table WHERE  clob_value_column LIKE '%your string%';

Note : There are performance problems associated with both the above ways like causing Full Table Scans, so please consider about Oracle Text Indexes as well:

https://docs.oracle.com/en/database/oracle/oracle-database/12.2/ccapp/indexing-with-oracle-text.html

They are two different metrics to evaluate your model's performance usually being used in different phases.

Loss is often used in the training process to find the "best" parameter values for your model (e.g. weights in neural network). It is what you try to optimize in the training by updating weights.

Accuracy is more from an applied perspective. Once you find the optimized parameters above, you use this metrics to evaluate how accurate your model's prediction is compared to the true data.

Let us use a toy classification example. You want to predict gender from one's weight and height. You have 3 data, they are as follows:(0 stands for male, 1 stands for female)

y1 = 0, x1_w = 50kg, x2_h = 160cm;

y2 = 0, x2_w = 60kg, x2_h = 170cm;

y3 = 1, x3_w = 55kg, x3_h = 175cm;

You use a simple logistic regression model that is y = 1/(1+exp-(b1*x_w+b2*x_h))

How do you find b1 and b2? you define a loss first and use optimization method to minimize the loss in an iterative way by updating b1 and b2.

In our example, a typical loss for this binary classification problem can be: (a minus sign should be added in front of the summation sign)

We don't know what b1 and b2 should be. Let us make a random guess say b1 = 0.1 and b2 = -0.03. Then what is our loss now?

so the loss is

Then you learning algorithm (e.g. gradient descent) will find a way to update b1 and b2 to decrease the loss.

What if b1=0.1 and b2=-0.03 is the final b1 and b2 (output from gradient descent), what is the accuracy now?

Let's assume if y_hat >= 0.5, we decide our prediction is female(1). otherwise it would be 0. Therefore, our algorithm predict y1 = 1, y2 = 1 and y3 = 1. What is our accuracy? We make wrong prediction on y1 and y2 and make correct one on y3. So now our accuracy is 1/3 = 33.33%

PS: In Amir's answer, back-propagation is said to be an optimization method in NN. I think it would be treated as a way to find gradient for weights in NN. Common optimization method in NN are GradientDescent and Adam.

use as below:

<div id="getSessionStorage"></div>

For this to append anything use below code for reference:

$(document).ready(function () {
        var storageVal = sessionStorage.getItem("UserName");
        alert(storageVal);
        $("#getSessionStorage").append(storageVal);
     });

This will appear as below in html (assuming storageVal="Rishabh")

<div id="getSessionStorage">Rishabh</div>

The best way is to use the category.
You can check the following function. Which has all the conditions to check.

-(BOOL)isNullString:(NSString *)aStr{
        if([(NSNull *)aStr isKindOfClass:[NSNull class]]){
            return YES;
        }
        if ((NSNull *)aStr  == [NSNull null]) {
            return YES;
        }
        if ([aStr isKindOfClass:[NSNull class]]){
            return YES;
        }
        if(![[aStr stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] length]){
            return YES;
        }
        return NO;
    }

Check this out. Just use float and get rid of relative.

http://jsfiddle.net/JhpRk/

#icons{float:left;}

None of the other solutions worked for me, but this does:

Create your own subclass of UINavigationController, make it implement the UINavigationBarDelegate (no need to manually set the navigation bar's delegate), add a UIViewController extension that defines a method to be called on a back button press, and then implement this method in your UINavigationController subclass:

func navigationBar(_ navigationBar: UINavigationBar, shouldPop item: UINavigationItem) -> Bool {
    self.topViewController?.methodToBeCalledOnBackButtonPress()
    self.popViewController(animated: true)
    return true
}

A Simple Solution: It work's for me

<div class="form-group">
    <label for="mcategory">Select Category</label>
    <select class="form-control" id="mcategory" name="mcategory" required>
        <option value="">Please select category</option>
        <?php foreach ($result_cat as $result): ?>
        <option value="<?php echo $result['name'];?>"<?php 
           if($result['name']==$mcategory){
               echo 'selected';
           } ?>><?php echo $result['name']; ?></option>
                                        }
        <?php endforeach; ?>
    </select>
</div>

This question is quite broad, so I'm going to give a couple of solutions.

Solution 1: Helper Method

Here's an example of using a Helper Method that you could change to fit your needs:

class SerializationHelper {
    static toInstance<T>(obj: T, json: string) : T {
        var jsonObj = JSON.parse(json);

        if (typeof obj["fromJSON"] === "function") {
            obj["fromJSON"](jsonObj);
        }
        else {
            for (var propName in jsonObj) {
                obj[propName] = jsonObj[propName]
            }
        }

        return obj;
    }
}

Then using it:

var json = '{"name": "John Doe"}',
    foo = SerializationHelper.toInstance(new Foo(), json);

foo.GetName() === "John Doe";

Advanced Deserialization

This could also allow for some custom deserialization by adding your own fromJSON method to the class (this works well with how JSON.stringify already uses the toJSON method, as will be shown):

interface IFooSerialized {
    nameSomethingElse: string;
}

class Foo {
  name: string;
  GetName(): string { return this.name }

  toJSON(): IFooSerialized {
      return {
          nameSomethingElse: this.name
      };
  }

  fromJSON(obj: IFooSerialized) {
        this.name = obj.nameSomethingElse;
  }
}

Then using it:

var foo1 = new Foo();
foo1.name = "John Doe";

var json = JSON.stringify(foo1);

json === '{"nameSomethingElse":"John Doe"}';

var foo2 = SerializationHelper.toInstance(new Foo(), json);

foo2.GetName() === "John Doe";

Solution 2: Base Class

Another way you could do this is by creating your own base class:

class Serializable {
    fillFromJSON(json: string) {
        var jsonObj = JSON.parse(json);
        for (var propName in jsonObj) {
            this[propName] = jsonObj[propName]
        }
    }
}

class Foo extends Serializable {
    name: string;
    GetName(): string { return this.name }
}

Then using it:

var foo = new Foo();
foo.fillFromJSON(json);

There's too many different ways to implement a custom deserialization using a base class so I'll leave that up to how you want it.

You don't specify the tables for Company and Date, and you might want to fix that.

Standard SQL using MERGE:

MERGE WorkRecord2 T
   USING Employee S
      ON T.EmployeeRun = S.EmployeeNo
         AND Company = '1'
         AND Date = '2013-05-06'
WHEN MATCHED THEN DELETE;

The answer from Devart is also standard SQL, though incomplete. It should look more like this:

DELETE
  FROM WorkRecord2
  WHERE EXISTS ( SELECT *
                   FROM Employee S
                  WHERE S.EmployeeNo = WorkRecord2.EmployeeRun
                        AND Company = '1'
                        AND Date = '2013-05-06' );

The important thing to note about the above is it is clear the delete is targeting a single table, as enforced in the second example by requiring a scalar subquery.

For me, the various proprietary syntax answers are harder to read and understand. I guess the mindset for is best described in the answer by frans eilering, i.e. the person writing the code doesn't necessarily care about the person who will read and maintain the code.

To delete all images:

docker rmi -f $(docker images -a | awk {'print $3'})

Explanation:

docker images -a | awk {'print $3'}

This command will return all image id's and then used to delete image using its id.

A portion of Coffee here:

# My little helper
read_buffer = (buffer, callback) ->
  data = ''
  buffer.on 'readable', -> data += buffer.read().toString()
  buffer.on 'end', -> callback data

# So request looks like
http.get 'http://i.want.some/stuff', (res) ->
  read_buffer res, (response) ->
    # Do some things with your response
    # but don't do that exactly :D
    eval(CoffeeScript.compile response, bare: true)

And compiled

var read_buffer;

read_buffer = function(buffer, callback) {
  var data;
  data = '';
  buffer.on('readable', function() {
    return data += buffer.read().toString();
  });
  return buffer.on('end', function() {
    return callback(data);
  });
};

http.get('http://i.want.some/stuff', function(res) {
  return read_buffer(res, function(response) {
    return eval(CoffeeScript.compile(response, {
      bare: true
    }));
  });
});

The most important part is the concepts. Once you understand how the building blocks work, differences in syntax amount to little more than mild dialects. A layer on top of your regular expression engine's syntax is the syntax of the programming language you're using. Languages such as Perl remove most of this complication, but you'll have to keep in mind other considerations if you're using regular expressions in a C program.

If you think of regular expressions as building blocks that you can mix and match as you please, it helps you learn how to write and debug your own patterns but also how to understand patterns written by others.

Start simple

Conceptually, the simplest regular expressions are literal characters. The pattern N matches the character 'N'.

Regular expressions next to each other match sequences. For example, the pattern Nick matches the sequence 'N' followed by 'i' followed by 'c' followed by 'k'.

If you've ever used grep on Unix—even if only to search for ordinary looking strings—you've already been using regular expressions! (The re in grep refers to regular expressions.)

Order from the menu

Adding just a little complexity, you can match either 'Nick' or 'nick' with the pattern [Nn]ick. The part in square brackets is a character class, which means it matches exactly one of the enclosed characters. You can also use ranges in character classes, so [a-c] matches either 'a' or 'b' or 'c'.

The pattern . is special: rather than matching a literal dot only, it matches any character^†. It's the same conceptually as the really big character class [-.?+%$A-Za-z0-9...].

Think of character classes as menus: pick just one.

Helpful shortcuts

Using . can save you lots of typing, and there are other shortcuts for common patterns. Say you want to match a digit: one way to write that is [0-9]. Digits are a frequent match target, so you could instead use the shortcut \d. Others are \s (whitespace) and \w (word characters: alphanumerics or underscore).

The uppercased variants are their complements, so \S matches any non-whitespace character, for example.

Once is not enough

From there, you can repeat parts of your pattern with quantifiers. For example, the pattern ab?c matches 'abc' or 'ac' because the ? quantifier makes the subpattern it modifies optional. Other quantifiers are

• * (zero or more times)
• + (one or more times)
• {n} (exactly n times)
• {n,} (at least n times)
• {n,m} (at least n times but no more than m times)

Putting some of these blocks together, the pattern [Nn]*ick matches all of

• ick
• Nick
• nick
• Nnick
• nNick
• nnick
• (and so on)

The first match demonstrates an important lesson: * always succeeds! Any pattern can match zero times.

A few other useful examples:

• [0-9]+ (and its equivalent \d+) matches any non-negative integer
• \d{4}-\d{2}-\d{2} matches dates formatted like 2019-01-01

Grouping

A quantifier modifies the pattern to its immediate left. You might expect 0abc+0 to match '0abc0', '0abcabc0', and so forth, but the pattern immediately to the left of the plus quantifier is c. This means 0abc+0 matches '0abc0', '0abcc0', '0abccc0', and so on.

To match one or more sequences of 'abc' with zeros on the ends, use 0(abc)+0. The parentheses denote a subpattern that can be quantified as a unit. It's also common for regular expression engines to save or "capture" the portion of the input text that matches a parenthesized group. Extracting bits this way is much more flexible and less error-prone than counting indices and substr.

Alternation

Earlier, we saw one way to match either 'Nick' or 'nick'. Another is with alternation as in Nick|nick. Remember that alternation includes everything to its left and everything to its right. Use grouping parentheses to limit the scope of |, e.g., (Nick|nick).

For another example, you could equivalently write [a-c] as a|b|c, but this is likely to be suboptimal because many implementations assume alternatives will have lengths greater than 1.

Escaping

Although some characters match themselves, others have special meanings. The pattern \d+ doesn't match backslash followed by lowercase D followed by a plus sign: to get that, we'd use \\d\+. A backslash removes the special meaning from the following character.

Greediness

Regular expression quantifiers are greedy. This means they match as much text as they possibly can while allowing the entire pattern to match successfully.

For example, say the input is

"Hello," she said, "How are you?"

You might expect ".+" to match only 'Hello,' and will then be surprised when you see that it matched from 'Hello' all the way through 'you?'.

To switch from greedy to what you might think of as cautious, add an extra ? to the quantifier. Now you understand how \((.+?)\), the example from your question works. It matches the sequence of a literal left-parenthesis, followed by one or more characters, and terminated by a right-parenthesis.

If your input is '(123) (456)', then the first capture will be '123'. Non-greedy quantifiers want to allow the rest of the pattern to start matching as soon as possible.

(As to your confusion, I don't know of any regular-expression dialect where ((.+?)) would do the same thing. I suspect something got lost in transmission somewhere along the way.)

Anchors

Use the special pattern ^ to match only at the beginning of your input and $ to match only at the end. Making "bookends" with your patterns where you say, "I know what's at the front and back, but give me everything between" is a useful technique.

Say you want to match comments of the form

-- This is a comment --

you'd write ^--\s+(.+)\s+--$.

Build your own

Regular expressions are recursive, so now that you understand these basic rules, you can combine them however you like.

Tools for writing and debugging regexes:

• RegExr (for JavaScript)
• Perl: YAPE: Regex Explain
• Regex Coach (engine backed by CL-PPCRE)
• RegexPal (for JavaScript)
• Regular Expressions Online Tester
• Regex Buddy
• Regex 101 (for PCRE, JavaScript, Python, Golang)
• Visual RegExp
• Expresso (for .NET)
• Rubular (for Ruby)
• Regular Expression Library (Predefined Regexes for common scenarios)
• Txt2RE
• Regex Tester (for JavaScript)
• Regex Storm (for .NET)
• Debuggex (visual regex tester and helper)

Books

• Mastering Regular Expressions, the 2nd Edition, and the 3rd edition.
• Regular Expressions Cheat Sheet
• Regex Cookbook
• Teach Yourself Regular Expressions

Free resources

• RegexOne - Learn with simple, interactive exercises.
• Regular Expressions - Everything you should know (PDF Series)
• Regex Syntax Summary
• How Regexes Work

Footnote

†: The statement above that . matches any character is a simplification for pedagogical purposes that is not strictly true. Dot matches any character except newline, "\n", but in practice you rarely expect a pattern such as .+ to cross a newline boundary. Perl regexes have a /s switch and Java Pattern.DOTALL, for example, to make . match any character at all. For languages that don't have such a feature, you can use something like [\s\S] to match "any whitespace or any non-whitespace", in other words anything.

Here's a demo: http://www.w3.org/Style/Examples/007/center-example

A method (JSFiddle example)

CSS:

html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    display: table
}
#content {
    display: table-cell;
    text-align: center;
    vertical-align: middle;
}

HTML:

<div id="content">
    Content goes here
</div>

Another method (JSFiddle example)

CSS

body, html, #wrapper {
    width: 100%;
    height: 100%
}
#wrapper {
    display: table
}
#main {
    display: table-cell;
    vertical-align: middle;
    text-align:center
}

HTML

<div id="wrapper">
<div id="main">
    Content goes here
</div>
</div>

I am going to take a different approach here and suggest that it is just as important for your fellow developers to understand your code as it is for the compiler/database to. Using boolean may do the same thing as using tinyint, however it has the advantage of semantically conveying what your intention is, and that's worth something.

If you use a tinyint, it's not obvious that the only values you should see are 0 and 1. A boolean is ALWAYS true or false.

You can also try this

Private Declare Function GetWindowText Lib "user32.dll" (ByVal hwnd As IntPtr, ByVal lpString As StringBuilder, ByVal cch As Integer) As Integer

I always use Declare Function instead of DllImport... Its more simply, its shorter and does the same

To have an idea of the speed penalty, I have tested two versions, one with Array.fill and one with StringBuilder.

public static String repeat(char what, int howmany) {
    char[] chars = new char[howmany];
    Arrays.fill(chars, what);
    return new String(chars);
}

and

public static String repeatSB(char what, int howmany) {
    StringBuilder out = new StringBuilder(howmany);
    for (int i = 0; i < howmany; i++)
        out.append(what);
    return out.toString();
}

using

public static void main(String... args) {
    String res;
    long time;

    for (int j = 0; j < 1000; j++) {
        res = repeat(' ', 100000);
        res = repeatSB(' ', 100000);
    }
    time = System.nanoTime();
    res = repeat(' ', 100000);
    time = System.nanoTime() - time;
    System.out.println("elapsed repeat: " + time);

    time = System.nanoTime();
    res = repeatSB(' ', 100000);
    time = System.nanoTime() - time;
    System.out.println("elapsed repeatSB: " + time);
}

(note the loop in main function is to kick in JIT)

The results are as follows:

elapsed repeat: 65899
elapsed repeatSB: 305171

It is a huge difference

'nunique' is an option for .agg() since pandas 0.20.0, so:

df.groupby('date').agg({'duration': 'sum', 'user_id': 'nunique'})

In my case the issue was resolved by installing Oracle's official JDK 10 as opposed to using the default OpenJDK that came with my Ubuntu. This is the guide I followed: https://www.linuxuprising.com/2018/04/install-oracle-java-10-in-ubuntu-or.html

Use df.to_dict('records') -- gives the output without having to transpose externally.

In [2]: df.to_dict('records')
Out[2]:
[{'customer': 1L, 'item1': 'apple', 'item2': 'milk', 'item3': 'tomato'},
 {'customer': 2L, 'item1': 'water', 'item2': 'orange', 'item3': 'potato'},
 {'customer': 3L, 'item1': 'juice', 'item2': 'mango', 'item3': 'chips'}]

Objects don't have a .length property.

A simple solution if you know you don't have to worry about hasOwnProperty checks, would be to do this:

Object.keys(data).length;

If you have to support IE 8 or lower, you'll have to use a loop, instead:

var length= 0;
for(var key in data) {
    if(data.hasOwnProperty(key)){
        length++;
    }
}

BYTE *str1 = "Hello World";
std::string str2((char *)str1);  /* construct on the stack */

Alternatively:

std::string *str3 = new std::string((char *)str1); /* construct on the heap */
cout << &str3;
delete str3;

Try this example:

public void TheDownload(string path)
{
  System.IO.FileInfo toDownload = new System.IO.FileInfo(HttpContext.Current.Server.MapPath(path));

  HttpContext.Current.Response.Clear();
  HttpContext.Current.Response.AddHeader("Content-Disposition",
             "attachment; filename=" + toDownload.Name);
  HttpContext.Current.Response.AddHeader("Content-Length",
             toDownload.Length.ToString());
  HttpContext.Current.Response.ContentType = "application/octet-stream";
  HttpContext.Current.Response.WriteFile(patch);
  HttpContext.Current.Response.End();
} 

The implementation is done in the follows:

TheDownload("@"c:\Temporal\Test.txt"");

Source: http://www.systemdeveloper.info/2014/03/force-downloading-file-from-c.html

This worked for me, where I wanted to display keyword "today" or "yesterday" only if date was today and previous day otherwise display date in d-M-Y format

<?php
function findDayDiff($date){
   $param_date=date('d-m-Y',strtotime($date);
   $response  = $param_date;
   if($param_date==date('d-m-Y',strtotime("now"))){
       $response = 'Today';
   }else if($param_date==date('d-m-Y',strtotime("-1 days"))){
       $response = 'Yesterday'; 
   }
   return $response;
}
?>

You should use System.Windows.Forms.Cursor.Position: "A Point that represents the cursor's position in screen coordinates."

The t indicates text mode, meaning that \n characters will be translated to the host OS line endings when writing to a file, and back again when reading. The flag is basically just noise, since text mode is the default.

Other than U, those mode flags come directly from the standard C library's fopen() function, a fact that is documented in the sixth paragraph of the python2 documentation for open().

As far as I know, t is not and has never been part of the C standard, so although many implementations of the C library accept it anyway, there's no guarantee that they all will, and therefore no guarantee that it will work on every build of python. That explains why the python2 docs didn't list it, and why it generally worked anyway. The python3 docs make it official.

Try this:

<?php
$handle = fopen ("specialchars.csv","r");
echo '<table border="1"><tr><td>First name</td><td>Last name</td></tr><tr>';
while ($data = fgetcsv ($handle, 1000, ";")) {
        $data = array_map("utf8_encode", $data); //added
        $num = count ($data);
        for ($c=0; $c < $num; $c++) {
            // output data
            echo "<td>$data[$c]</td>";
        }
        echo "</tr><tr>";
}
?>

try converting the date first.

$date = "2012-08-06";

mysql_query("INSERT INTO data_table (title, date_of_event)
               VALUES('" . $_POST['post_title'] . "',
                      '" . $date . "')") 
           or die(mysql_error());

At my case change buildToolsVersion from "24" to "23.0.2", solve the problem.

Follow these steps to create CSR (Code Signing Identity):

1. On your Mac, go to the folder 'Applications' ? 'Utilities' and open 'Keychain Access.'

   

2. Go to 'Keychain Access' ? Certificate Assistant ? Request a Certificate from a Certificate Authority. ?

   

3. Fill out the information in the Certificate Information window as specified below and click "Continue."
   • In the User Email Address field, enter the email address to identify with this certificate
   • In the Common Name field, enter your name
   • In the Request group, click the "Saved to disk" option ?

   

4. Save the file to your hard drive.

   

Use this CSR (.certSigningRequest) file to create project/application certificates and profiles, in Apple developer account.

Version used to ensure that only one update in a time. JPA provider will check the version, if the expected version already increase then someone else already update the entity so an exception will be thrown.

So updating entity value would be more secure, more optimist.

If the value changes frequent, then you might consider not to use version field. For an example "an entity that has counter field, that will increased everytime a web page accessed"

I keep things simple:
At the module level I define two variables and set one to the name of the module itself.

    Private Const ThisModuleName            As String = "mod_Custom_Functions"
    Public sLocalErrorMsg                   As String

Within each Sub/Function of the module I define a local variable

    Dim ThisRoutineName                     As String

I set ThisRoutineName to the name of the sub or function

' Housekeeping
    On Error Goto ERR_RTN
    ThisRoutineName = "CopyWorksheet"

I then send all errors to an ERR_RTN: when they occur, but I first set the sLocalErrorMsg to define what the error actually is and provide some debugging info.

    If Len(Trim(FromWorksheetName)) < 1 Then
        sLocalErrorMsg = "Parameter 'FromWorksheetName' Is Missing."
        GoTo ERR_RTN
    End If

At the bottom of each sub/function, I direct the logic flow as follows

    '
    ' The "normal" logic goes here for what the routine does
    '
    GoTo EXIT_RTN

    ERR_RTN:

        On Error Resume Next

    ' Call error handler if we went this far.
        ErrorHandler ThisModuleName, ThisRoutineName, sLocalErrorMsg, Err.Description, Err.Number, False

    EXIT_RTN:

        On Error Resume Next
     '
     ' Some closing logic
     '
    End If

I then have a seperate module I put in all projects called "mod_Error_Handler".

    '
    '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
    ' Subroutine Name:     ErrorHandler                                                     '
    '                                                                                       '
    ' Description:                                                                          '
    '   This module will handle the common error alerts.                                    '
    '                                                                                       '
    ' Inputs:                                                                               '
    '   ModuleName                String    'The name of the module error is in.            '
    '   RoutineName               String    'The name of the routine error in in.           '
    '   LocalErrorMsg             String    'A local message to assist with troubleshooting.'
    '   ERRDescription            String    'The Windows Error Description.                 '
    '   ERRCode                   Long      'The Windows Error Code.                        '
    '   Terminate                 Boolean   'End program if error encountered?              '
    '                                                                                       '
    ' Revision History:                                                                     '
    ' Date (YYYYMMDD) Author                Change                                          '
    ' =============== ===================== =============================================== '
    ' 20140529        XXXXX X. XXXXX        Original                                        '
    '                                                                                       '
    '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
    '
    Public Sub ErrorHandler(ModuleName As String, RoutineName As String, LocalErrorMsg As String, ERRDescription As String, ERRCode As Long, Terminate As Boolean)
        Dim sBuildErrorMsg                 As String

    ' Build Error Message To Display
        sBuildErrorMsg = "Error Information:" & vbCrLf & vbCrLf

        If Len(Trim(ModuleName)) < 1 Then
            ModuleName = "Unknown"
        End If

        If Len(Trim(RoutineName)) < 1 Then
           RoutineName = "Unknown"
        End If

        sBuildErrorMsg = sBuildErrorMsg & "Module Name:        " & ModuleName & vbCrLf & vbCrLf
        sBuildErrorMsg = sBuildErrorMsg & "Routine Name:       " & RoutineName & vbCrLf & vbCrLf

        If Len(Trim(LocalErrorMsg)) > 0 Then
            sBuildErrorMsg = sBuildErrorMsg & "Local Error Msg:    " & LocalErrorMsg & vbCrLf & vbCrLf
        End If

        If Len(Trim(ERRDescription)) > 0 Then
            sBuildErrorMsg = sBuildErrorMsg & "Program Error Msg:  " & ERRDescription & vbCrLf & vbCrLf
            If IsNumeric(ERRCode) Then
                sBuildErrorMsg = sBuildErrorMsg & "Program Error Code: " & Trim(Str(ERRCode)) & vbCrLf & vbCrLf
            End If
        End If

        MsgBox sBuildErrorMsg, vbOKOnly + vbExclamation, "Error Detected!"

        If Terminate Then
            End
        End If

    End Sub

The end result is a pop-up error message teling me in what module, what soubroutine, and what the error message specifically was. In addition, it also will insert the Windows error message and code.

you have to pass values with the single quotes

$(document).ready(function() {    
    $("#raaagh").click(function(){    
        $.ajax({
            url: 'ajax.php', //This is the current doc
            type: "POST",
            data: ({name: '145'}), //variables should be pass like this
            success: function(data){
                console.log(data);
                           }
        });  
        $.ajax({
    url:'ajax.php',
    data:"",
    dataType:'json',
    success:function(data1){
            var y1=data1;
            console.log(data1);
            }
        });

    });
});

try it it may work.......

I recently had a need to take this one step further, which was to make the property additions in the dynamic object, dynamic themselves, based on user defined entries. The examples here, and from Microsoft's ExpandoObject documentation, do not specifically address adding properties dynamically, but, can be surmised from how you enumerate and delete properties. Anyhow, I thought this might be helpful to someone. Here is an extremely simplified version of how to add truly dynamic properties to an ExpandoObject (ignoring keyword and other handling):

        // my pretend dataset
        List<string> fields = new List<string>();
        // my 'columns'
        fields.Add("this_thing");
        fields.Add("that_thing");
        fields.Add("the_other");

        dynamic exo = new System.Dynamic.ExpandoObject();

        foreach (string field in fields)
        {
            ((IDictionary<String, Object>)exo).Add(field, field + "_data");
        }

        // output - from Json.Net NuGet package
        textBox1.Text = Newtonsoft.Json.JsonConvert.SerializeObject(exo);

g.setFont(new Font("TimesRoman", Font.PLAIN, fontSize)); 

Where fontSize is a int. The API for drawString states that the x and y parameters are coordinates, and have nothing to do with the size of the text.

In a bash script, you have several ways to check if the running user is root.

As a warning, do not check if a user is root by using the root username. Nothing guarantees that the user with ID 0 is called root. It's a very strong convention that is broadly followed but anybody could rename the superuser another name.

I think the best way when using bash is to use $EUID, from the man page:

EUID   Expands to the effective user ID of the current  user,  initialized
       at shell startup.  This variable is readonly.

This is a better way than $UID which could be changed and not reflect the real user running the script.

if (( $EUID != 0 )); then
    echo "Please run as root"
    exit
fi

A way I approach that kind of problem is by injecting sudo in my commands when not run as root. Here is an example:

SUDO=''
if (( $EUID != 0 )); then
    SUDO='sudo'
fi
$SUDO a_command

This ways my command is run by root when using the superuser or by sudo when run by a regular user.

If your script is always to be run by root, simply set the rights accordingly (0500).

In getUserById you shouldn't create a new object (user1) which isn't used. Just assign it to the already (but null) initialized user. Otherwise Hibernate.initialize(user); is actually Hibernate.initialize(null);

Here's the new getUserById (I haven't tested this ;)):

public User getUserById(Long user_id) {
    Session session = null;
    Object user = null;
    try {
        session = HibernateUtil.getSessionFactory().openSession();
        user = (User)session.load(User.class, user_id);
        Hibernate.initialize(user);
    } catch (Exception e) {
       e.printStackTrace();
    } finally {
        if (session != null && session.isOpen()) {
            session.close();
        }
    }
    return user;
}

Marked answer work!! but Not in my case there's more then one datepicker and only want to implement on particular datepicker

So I use instance of dp and find datepicker Div and add hide class

Here's Code

<style>
    .hide-day-calender .ui-datepicker-calendar{
        display:none;
    }
</style>

<script>
        $('#dpMonthYear').datepicker({ 
            changeMonth: true,
            changeYear: true,
            showButtonPanel: true,
            dateFormat: 'MM yy',
            onClose: function (dateText, inst) { 
                $(this).datepicker('setDate', new Date(inst.selectedYear, inst.selectedMonth, 1));
            },
            beforeShow: function (elem,dp) {
                $(dp.dpDiv).addClass('hide-day-calender'); //here a change
            }
        });
</script>

Note: You can not target .ui-datepicker-calendar and set css, because it will constantly rendering while selection/changes

If the column already exists in your table and it is null, you can update the column with this command (replace id, tablename, and tablekey ):

UPDATE x
SET x.<Id> = x.New_Id
FROM (
  SELECT <Id>, ROW_NUMBER() OVER (ORDER BY <tablekey>) AS New_Id
  FROM <tablename>
  ) x

Maybe

df <- do.call("cbind", list(df, rep(list(NA),length(namevector))))
colnames(df)[-1*(1:(ncol(df) - length(namevector)))] <- namevector

You can use isinstance if you have an instance, or issubclass if you have a class. Normally thought its a bad idea. Normally in Python you work out if an object is capable of something by attempting to do that thing to it.

This note from the Android Developer site is what worked for me:

Enable USB debugging on your device. On most devices running Android 3.2 or older, you can find the option under Settings > Applications > Development. On Android 4.0 and newer, it's in Settings > Developer options. Note: On Android 4.2 and newer, Developer options is hidden by default. To make it available, go to Settings > About phone and tap Build number seven times. Return to the previous screen to find Developer options.

Using sup on the letter "o" and a capital "C"

<sup>o</sup>C

Should work in all browsers and IE6+

Use tr '\n' ' ' to translate all newline characters to spaces:

$ grep pattern file | tr '\n' ' '

Note: grep reads files, cat concatenates files. Don't cat file | grep!

Edit:

tr can only handle single character translations. You could use awk to change the output record separator like:

$ grep pattern file | awk '{print}' ORS='" '

This would transform:

one
two 
three

to:

one" two" three" 

go to config/environments/test.rb

Rails.application.routes.default_url_options[:host] = 'localhost:3000'

I solved my slow Git problem on Windows 7 x64 by starting cmd.exe with "Run as administrator".

You can add position: fixed; with top left right bottom 0 attribute, that solution work on older browsers too.

If you want to embed it, add position: absolute; to the wrapper, and position: relative to the div outside of the wrapper.

.wrapper {_x000D_
  position: fixed;_x000D_
  top: 0;_x000D_
  left: 0;_x000D_
  right: 0;_x000D_
  bottom: 0;_x000D_
_x000D_
  display: grid;_x000D_
  border-style: solid;_x000D_
  border-color: red;_x000D_
  grid-template-columns: repeat(3, 1fr);_x000D_
  grid-template-rows: repeat(3, 1fr);_x000D_
  grid-gap: 10px;_x000D_
}_x000D_
.one {_x000D_
  border-style: solid;_x000D_
  border-color: blue;_x000D_
  grid-column: 1 / 3;_x000D_
  grid-row: 1;_x000D_
}_x000D_
.two {_x000D_
  border-style: solid;_x000D_
  border-color: yellow;_x000D_
  grid-column: 2 / 4;_x000D_
  grid-row: 1 / 3;_x000D_
}_x000D_
.three {_x000D_
  border-style: solid;_x000D_
  border-color: violet;_x000D_
  grid-row: 2 / 5;_x000D_
  grid-column: 1;_x000D_
}_x000D_
.four {_x000D_
  border-style: solid;_x000D_
  border-color: aqua;_x000D_
  grid-column: 3;_x000D_
  grid-row: 3;_x000D_
}_x000D_
.five {_x000D_
  border-style: solid;_x000D_
  border-color: green;_x000D_
  grid-column: 2;_x000D_
  grid-row: 4;_x000D_
}_x000D_
.six {_x000D_
  border-style: solid;_x000D_
  border-color: purple;_x000D_
  grid-column: 3;_x000D_
  grid-row: 4;_x000D_
}

<html>_x000D_
<div class="wrapper">_x000D_
  <div class="one">One</div>_x000D_
  <div class="two">Two</div>_x000D_
  <div class="three">Three</div>_x000D_
  <div class="four">Four</div>_x000D_
  <div class="five">Five</div>_x000D_
  <div class="six">Six</div>_x000D_
</div>_x000D_
</html>

if the page have one <a> It Works,but,many <a> ,have to use var href = $(this).attr('href');

Sounds like you really want a Dictionary<int, string> or possibly a switch statement...

You can do it with the conditional operator though:

userType = user.Type == 0 ? "Admin"
         : user.Type == 1 ? "User"
         : user.Type == 2 ? "Employee"
         : "The default you didn't specify";

While you could put that in one line, I'd strongly urge you not to.

I would normally only do this for different conditions though - not just several different possible values, which is better handled in a map.

Implement both deprecated and non-deprecated methods like below. First one is to handle API level 21 and higher, second one is handle lower than API level 21

webViewClient = object : WebViewClient() {
.
.
        @RequiresApi(Build.VERSION_CODES.LOLLIPOP)
        override fun shouldOverrideUrlLoading(view: WebView?, request: WebResourceRequest?): Boolean {
            parseUri(request?.url)
            return true
        }

        @SuppressWarnings("deprecation")
        override fun shouldOverrideUrlLoading(view: WebView?, url: String?): Boolean {
            parseUri(Uri.parse(url))
            return true
        }
}

select * from employee_list order by salary desc limit 2;

Everyone else has posted "going backwards" answer, so I'll give the alternative: create a list of items you want to remove, then remove them at the end:

List<string> removals = new List<string>();
foreach (string s in listBox1.Items)
{
    MessageBox.Show(s);
    //do stuff with (s);
    removals.Add(s);
}

foreach (string s in removals)
{
    listBox1.Items.Remove(s);
}

Sometimes the "work backwards" method is better, sometimes the above is better - particularly if you're dealing with a type which has a RemoveAll(collection) method. Worth knowing both though.

See Jenkins documentation: Parameterized Build

Below is the line you are interested in:

http://server/job/myjob/buildWithParameters?token=TOKEN&PARAMETER=Value

Sure You can. I'd say that You should.

This article may be usefull:
http://www.learncpp.com/cpp-tutorial/812-static-member-functions/

HTML5 download attribute

Just to allow user to download the image or other file you may use the HTML5 download attribute.

Static file download

<a href="/images/image-name.jpg" download>
<!-- OR -->
<a href="/images/image-name.jpg" download="new-image-name.jpg"> 

Dynamic file download

In cases requesting image dynamically it is possible to emulate such download.

If your image is already loaded and you have the base64 source then:

function saveBase64AsFile(base64, fileName) {
    var link = document.createElement("a");

    document.body.appendChild(link); // for Firefox

    link.setAttribute("href", base64);
    link.setAttribute("download", fileName);
    link.click();
}

Otherwise if image file is downloaded as Blob you can use FileReader to convert it to Base64:

function saveBlobAsFile(blob, fileName) {
    var reader = new FileReader();

    reader.onloadend = function () {    
        var base64 = reader.result ;
        var link = document.createElement("a");

        document.body.appendChild(link); // for Firefox

        link.setAttribute("href", base64);
        link.setAttribute("download", fileName);
        link.click();
    };

    reader.readAsDataURL(blob);
}

Firefox

The anchor tag you are creating also needs to be added to the DOM in Firefox, in order to be recognized for click events (Link).

IE is not supported: Caniuse link

you could try

if (isValid) {
    document.getElementById("endTimeLabel").style.display = "none";
}else {
    document.getElementById("endTimeLabel").style.display = "block";
}

alone those lines

This isn't significantly different from other answers, but I wanted the array of integers in the end:

    Integer[] indices = new Integer[n];
    Arrays.setAll(indices, i -> i);
    Collections.shuffle(Arrays.asList(indices));
    return Arrays.stream(indices).mapToInt(Integer::intValue).toArray();

When you inherit a class from a base class, you can invoke the base class constructor by instantiating the derived class

class sample
{
    public int x;

    public sample(int value)
    {
        x = value;
    }
}

class der : sample
{
    public int a;
    public int b;

    public der(int value1,int value2) : base(50)
    {
        a = value1;
        b = value2;
    }
}

class run 
{
    public static void Main(string[] args)
    {
        der obj = new der(10,20);

        System.Console.WriteLine(obj.x);
        System.Console.WriteLine(obj.a);
        System.Console.WriteLine(obj.b);
    }
}

Output of the sample program is

50 10 20

You can also use this keyword to invoke a constructor from another constructor

class sample
{
    public int x;

    public sample(int value) 
    {
        x = value;
    }

    public sample(sample obj) : this(obj.x) 
    {
    }
}

class run
{
    public static void Main(string[] args) 
    {
        sample s = new sample(20);
        sample ss = new sample(s);

        System.Console.WriteLine(ss.x);
    }
}

The output of this sample program is

20

var date = new Date('2012.08.10');
var unixTimeStamp = Math.floor(date.getTime() / 1000);

In this case it's important to return only a whole number (so a simple division won't do), and also to only return actually elapsed seconds (that's why this code uses Math.floor() and not Math.round()).

I would go with the System.Environment.NewLine or a StringBuilder

Then you could add lines with a string builder like this:

StringBuilder sb = new StringBuilder();
sb.AppendLine("brown");
sb.AppendLine("brwn");

textbox1.Text += sb.ToString();

or NewLine like this:

textbox1.Text += System.Environment.NewLine + "brown";

Better:

StringBuilder sb = new StringBuilder(textbox1.Text);
sb.AppendLine("brown");
sb.AppendLine("brwn");

textbox1.Text = sb.ToString();

In the search dropdown on the standard toolbar, you can use the "open file" macro, >of, to find files. Click in said dropdown (or hit Ctrl-D) then start typing (minus the quotes) ">of CoreEdit.cs", and you'll get a dynamic list that narrows as you type.

Use getDisplayName.

For earlier API's use String.format(Locale.US,"%tB",c);

Simple solution

Just add --network=host to docker run. That's all!

This way container will use the host's network, so localhost and 127.0.0.1 will point to the host (by default they point to a container). Example:

docker run -d --network=host \
  -e "DB_DBNAME=your_db" \
  -e "DB_PORT=5432" \
  -e "DB_USER=your_db_user" \
  -e "DB_PASS=your_db_password" \
  -e "DB_HOST=127.0.0.1" \
  --name foobar foo/bar

In additional to the existing answers which suggests using (to show the diff of the third-to-last stash)

git stash show -p stash@{2}

Note that in the git-stash documentation, it is written that

Stashes may also be referenced by specifying just the stash index (e.g. the integer n is equivalent to stash@{n}).

Therefore it's also possible to use (this is equivalent to the command above)

git stash show -p 2

Which should also avoid some Powershell issues.

1. solution

select * from emp
    where rowid not in
    (select max(rowid) from emp group by empno);

i wrote a small function.. but works for me

def conv(strng):
    k=strng
    k=k.replace('\a','\\a')
    k=k.replace('\b','\\b')
    k=k.replace('\f','\\f')
    k=k.replace('\n','\\n')
    k=k.replace('\r','\\r')
    k=k.replace('\t','\\t')
    k=k.replace('\v','\\v')
    return k

The long boring solution, which is not involved with CLI, you can manually navigate to:

your local repo folder ? .git folder (hidden) ? config file

then choose your text editor to open it and look for url located under the [remote "origin"] section.

You need to download the java-openjfx package from the official Arch Linux repos. (Also, make sure you have the openjdk8-openjdk package). After doing that, open your project in Intellij and go to Project-Structure -> SDKs -> 1.8 -> Classpath and try removing the old JDK you had and clicking on the directory for the new JDK that will now contain jfxrt.jar.

XmlDocument d = new XmlDocument();
d.Load(@"D:\Work_Time_Calculator\10-07-2013.xml");
XmlNodeList n = d.GetElementsByTagName("Short_Fall");
if(n != null) {
    Console.WriteLine(n[0].InnerText); //Will output '08:29:57'
}

or you could wrap in foreach loop to print each value

XmlDocument d = new XmlDocument();
d.Load(@"D:\Work_Time_Calculator\10-07-2013.xml");
XmlNodeList n = d.GetElementsByTagName("Short_Fall");
if(n != null) {
    foreach(XmlNode curr in n) {
        Console.WriteLine(curr.InnerText);
    }
}

If your underlying database data types are varchar then you should stick with the approach below. Otherwise the query would have a huge performance impact.

var firstName = new SqlParameter("@firstName", System.Data.SqlDbType.VarChar, 20)
                            {
                                Value = "whatever"
                            };

var id = new SqlParameter("@id", System.Data.SqlDbType.Int)
                            {
                                Value = 1
                            };
ctx.Database.ExecuteSqlCommand(@"Update [User] SET FirstName = @firstName WHERE Id = @id"
                               , firstName, id);

You can check Sql profiler to see the difference.

Instead of creating too many short Polylines just create one like here:

PolylineOptions options = new PolylineOptions().width(5).color(Color.BLUE).geodesic(true);
for (int z = 0; z < list.size(); z++) {
    LatLng point = list.get(z);
    options.add(point);
}
line = myMap.addPolyline(options);

I'm also not sure you should use geodesic when your points are so close to each other.

Add the bg-transparent class to the navbar.

<div class="bg-primary">
    <div class="navbar navbar-dark bg-transparent">
         ...
    </div>
</div>

If you are using a Linux server, you can use

exec("nohup $php_path path/script.php > /dev/null 2>/dev/null &")

If you need pass some args

exec("nohup $php_path path/script.php $args > /dev/null 2>/dev/null &")

In script.php

$args = $argv[1];

Or use Symfony https://symfony.com/doc/current/components/process.html

$process = Process::fromShellCommandline("php ".base_path('script.php'));
$process->setTimeout(0);     
$process->disableOutput();     
$process->start();

First of all, you should look gradle.properties and these values have to be true. If you cannot see them you have to write.

android.useAndroidX=true
android.enableJetifier=true

After that you can use AndroidX dependencies in your build.gradle (Module: app). Also, you have to check compileSDKVersion and targetVersion. They should be minimum 28. For example I am using 29.

So, an androidx dependency example:

implementation 'androidx.cardview:cardview:1.0.0'

However be careful because everything is not start with androidx like cardview dependency. For example, old design dependency is:

implementation 'com.android.support:design:27.1.1'

But new design dependency is:

implementation 'com.google.android.material:material:1.3.0'

RecyclerView is:

implementation 'androidx.recyclerview:recyclerview:1.1.0'

So, you have to search and read carefully. Happy code.

@canerkaseler

If you really need to be sure that now() has the same value you can run two queries (that will answer to your second question too, in that case you are asking to update last_monitor = to last_update but last_update hasn't been updated yet)

you could do something like:

mysql> update table set last_update=now() where id=1;
mysql> update table set last_monitor = last_update where id=1;

anyway I think that mysql is clever enough to ask for now() only once per query.

For eclipse Mar1 : - Window > Preferences > General > Network connections. Choose "Manual" from drop down. Double click "HTTP" option and enter the Host, Port, Username and Password. Apply and Finish,,it will work as expected...

Well, you can hide it, by removing the entire system menu:

private const int WS_SYSMENU = 0x80000;
protected override CreateParams CreateParams
{
    get
    {
        CreateParams cp = base.CreateParams;
        cp.Style &= ~WS_SYSMENU;
        return cp;
    }
}

Of course, doing so removes the minimize and maximize buttons.

If you keep the system menu but remove the close item then the close button remains but is disabled.

The final alternative is to paint the non-client area yourself. That's pretty hard to get right.

You can rename/remove master on remote, but this will be an issue if lots of people have based their work on the remote master branch and have pulled that branch in their local repo.
That might not be the case here since everyone seems to be working on branch 'seotweaks'.

In that case you can:
git remote --show may not work. (Make a git remote show to check how your remote is declared within your local repo. I will assume 'origin')
(Regarding GitHub, house9 comments: "I had to do one additional step, click the 'Admin' button on GitHub and set the 'Default Branch' to something other than 'master', then put it back afterwards")

git branch -m master master-old  # rename master on local
git push origin :master          # delete master on remote
git push origin master-old       # create master-old on remote
git checkout -b master seotweaks # create a new local master on top of seotweaks
git push origin master           # create master on remote

But again:

• if other users try to pull while master is deleted on remote, their pulls will fail ("no such ref on remote")
• when master is recreated on remote, a pull will attempt to merge that new master on their local (now old) master: lots of conflicts. They actually need to reset --hard their local master to the remote/master branch they will fetch, and forget about their current master.

In the HTTP request you need to set Content-Type to: Content-Type: application/json

So if you're using fiddler client add Content-Type: application/json to the request header

Assuming you want to parse the number of digits used to represent from a variable which is not always constant, a good way will be to use numpy.binary.

could be useful when you apply binary to power sets

import numpy as np
np.binary_repr(6, width=8)

1. If it is a library based only on javascript, than you can just run npm uninstall --save package_name or npm uninstall --save-dev package_name
2. If you've installed a library with native content that requires linking, and you've linked it with npm then you can do: npm unlink package_name then follow step 1
3. If you've installed a library with native content manually, then just undo all the steps you took to add the library in the first place. Then follow step 1.

note rnpm as is deprecated

#i'm also maintaining insertion order here
Map<Integer,ArrayList> d=new LinkedHashMap<>();
for( int i=0; i<2; i++)
{
int id=s.nextInt();
ArrayList al=new ArrayList<>();
al.add(s.next());  //name
al.add(s.next());  //category
al.add(s.nextInt()); //fee
d.put(id, al);
 }

Just compare the column with that value:

In [9]: df = pandas.DataFrame([1,2,3,4], columns=["data"])

In [10]: df
Out[10]: 
   data
0     1
1     2
2     3
3     4

In [11]: df["desired"] = df["data"] > 2.5
In [11]: df
Out[12]: 
   data desired
0     1   False
1     2   False
2     3    True
3     4    True

verify successfully. my idea version is 2019.2

Quick fix: 1.use maven install you dependent module,then reimport all module 2.compile current module,if still not found,close your all idea window,restart idea.

Another way is to take the first element of the reversed vector:

rev(dat$vect1$vec2)[1]

Here's an ECMA-style implementation:

function gcd(a, b){
    // Euclidean algorithm
    while (b != 0){
        var temp = b;
        b = a % b;
        a = temp;
    }
    return a;
}

function lcm(a, b){
    return (a * b / gcd(a, b));
}

function lcmm(args){
    // Recursively iterate through pairs of arguments
    // i.e. lcm(args[0], lcm(args[1], lcm(args[2], args[3])))

    if(args.length == 2){
        return lcm(args[0], args[1]);
    } else {
        var arg0 = args[0];
        args.shift();
        return lcm(arg0, lcmm(args));
    }
}

For me the UnicodeWriter class from Python 2 CSV module documentation didn't really work as it breaks the csv.writer.write_row() interface.

For example:

csv_writer = csv.writer(csv_file)
row = ['The meaning', 42]
csv_writer.writerow(row)

works, while:

csv_writer = UnicodeWriter(csv_file)
row = ['The meaning', 42]
csv_writer.writerow(row)

will throw AttributeError: 'int' object has no attribute 'encode'.

As UnicodeWriter obviously expects all column values to be strings, we can convert the values ourselves and just use the default CSV module:

def to_utf8(lst):
    return [unicode(elem).encode('utf-8') for elem in lst]

...
csv_writer.writerow(to_utf8(row))

Or we can even monkey-patch csv_writer to add a write_utf8_row function - the exercise is left to the reader.

@The Thunder Chimp You can split text in such a way that some sections are affected by super(or sub) script and others aren't through the use of *. For your example, with splitting the word "moment" from "4th" -

plot(rnorm(30), xlab = expression('4'^th*'moment'))

Below is the code to enter date in the format of DD-MM-YYYY you can change the input format by changing the order of '%d-%m-%Y' and also by changing the delimiter.

import datetime
try:
    date = input()
    date_time_obj = datetime.datetime.strptime(date, '%d-%m-%Y')
    print(date_time_obj.strftime('%A'))
except ValueError:
    print("Invalid date.")

I would say that way is more pythonic and fits on line:

If you need to check value only with the use of your function:

if filter( your_function, dictionary.values() ): ...

When you need to know if your dict contains any keys:

if dictionary: ...

Anyway, using loops here is not Python-way.

In Mercurial you use hg log --keyword to search for keywords in the commit messages and hg log --user to search for a particular user. See hg help log for other ways to limit the log.

First, Lateral and Cross Apply is same thing. Therefore you may also read about Cross Apply. Since it was implemented in SQL Server for ages, you will find more information about it then Lateral.

Second, according to my understanding, there is nothing you can not do using subquery instead of using lateral. But:

Consider following query.

Select A.*
, (Select B.Column1 from B where B.Fk1 = A.PK and Limit 1)
, (Select B.Column2 from B where B.Fk1 = A.PK and Limit 1)
FROM A 

You can use lateral in this condition.

Select A.*
, x.Column1
, x.Column2
FROM A LEFT JOIN LATERAL (
  Select B.Column1,B.Column2,B.Fk1 from B  Limit 1
) x ON X.Fk1 = A.PK

In this query you can not use normal join, due to limit clause. Lateral or Cross Apply can be used when there is not simple join condition.

There are more usages for lateral or cross apply but this is most common one I found.

Here's my solution for inline comments in between multiple piped commands.

Example uncommented code:

    #!/bin/sh
    cat input.txt \
    | grep something \
    | sort -r

Solution for a pipe comment (using a helper function):

    #!/bin/sh
    pipe_comment() {
        cat - 
    }
    cat input.txt \
    | pipe_comment "filter down to lines that contain the word: something" \
    | grep something \
    | pipe_comment "reverse sort what is left" \
    | sort -r

Or if you prefer, here's the same solution without the helper function, but it's a little messier:

    #!/bin/sh
    cat input.txt \
    | cat - `: filter down to lines that contain the word: something` \
    | grep something \
    | cat - `: reverse sort what is left` \
    | sort -r

No, they are identical.

default(), for any value type (DateTime is a value type) will always call the parameterless constructor.

You need to use Ajax, which is basically sending a request to the server, then getting a JSON object, which you convert to a JavaScript object.

Check this:

http://www.w3schools.com/ajax/tryit.asp?filename=tryajax_first

If you are using jQuery library, it can be even easier:

http://api.jquery.com/jQuery.ajax/

Having said this, I highly recommend you don't download a file of 3.5MB into JS! It is not a good idea. Do the processing on your server, then return the data after processing. Then if you want to get a new data, send a new Ajax request, process the request on server, then return the new data.

Hope that helps.

Check to make sure that both score and array[x] are numerical types. You might be comparing an integer to a string...which is heartbreakingly possible in Python 2.x.

>>> 2 < "2"
True
>>> 2 > "2"
False
>>> 2 == "2"
False

Edit

Further explanation: How does Python compare string and int?

If you have a clean (un-modified) working copy

To rollback one commit (make sure you note the commit's hash for the next step):

git reset --hard HEAD^

To pull that commit into a different branch:

git checkout other-branch
git cherry-pick COMMIT-HASH

If you have modified or untracked changes

Also note that git reset --hard will kill any untracked and modified changes you might have, so if you have those you might prefer:

git reset HEAD^
git checkout .

Explain what video describe to resolve problem

After Changing Password of root (Mysql Account). Accessing to phpmyadmin page will be denied because phpMyAdmin use root/''(blank) as default username/password. To resolve this problem, you need to reconfig phpmyadmin. Edit file config.inc.php in folder %wamp%\apps\phpmyadmin4.1.14 (Not in %wamp%)

$cfg['Servers'][$i]['verbose'] = 'mysql wampserver';
$cfg['Servers'][$i]['auth_type'] = 'config';
$cfg['Servers'][$i]['user'] = 'root';
$cfg['Servers'][$i]['password'] = 'changed';
$cfg['Servers'][$i]['host'] = '127.0.0.1';
$cfg['Servers'][$i]['connect_type'] = 'tcp';
$cfg['Servers'][$i]['compress'] = false;
$cfg['Servers'][$i]['extension'] = 'mysqli';
$cfg['Servers'][$i]['AllowNoPassword'] = false;

If you have more than 1 DB server, add "i++" to file and continue add new config as above

Java is only pass-by-value. (or better - pass-reference-by-value)

So the passed argument and the argument within the method are two different handlers pointing to the same object (value).

Therefore if you change the state of the object, it is reflected to every other variable that's referencing it. But if you re-assign a new object (value) to the argument, then other variables pointing to this object (value) do not get re-assigned.

I simplified your code to isolate the test for "%" being in the cell. Once you get that to work, you can add in the rest of your code.

Try this:

Option Explicit


Sub DoIHavePercentSymbol()
   Dim rng As Range

   Set rng = ActiveCell

   Do While rng.Value <> Empty
        If InStr(rng.Value, "%") = 0 Then
            MsgBox "I know nothing about percentages!"
            Set rng = rng.Offset(1)
            rng.Select
        Else
            MsgBox "I contain a % symbol!"
            Set rng = rng.Offset(1)
            rng.Select
        End If
   Loop

End Sub

InStr will return the number of times your search text appears in the string. I changed your if test to check for no matches first.

The message boxes and the .Selects are there simply for you to see what is happening while you are stepping through the code. Take them out once you get it working.

Passive event listeners are an emerging web standard, new feature shipped in Chrome 51 that provide a major potential boost to scroll performance. Chrome Release Notes.

It enables developers to opt-in to better scroll performance by eliminating the need for scrolling to block on touch and wheel event listeners.

Problem: All modern browsers have a threaded scrolling feature to permit scrolling to run smoothly even when expensive JavaScript is running, but this optimization is partially defeated by the need to wait for the results of any touchstart and touchmove handlers, which may prevent the scroll entirely by calling preventDefault() on the event.

Solution: {passive: true}

By marking a touch or wheel listener as passive, the developer is promising the handler won't call preventDefault to disable scrolling. This frees the browser up to respond to scrolling immediately without waiting for JavaScript, thus ensuring a reliably smooth scrolling experience for the user.

document.addEventListener("touchstart", function(e) {
    console.log(e.defaultPrevented);  // will be false
    e.preventDefault();   // does nothing since the listener is passive
    console.log(e.defaultPrevented);  // still false
}, Modernizr.passiveeventlisteners ? {passive: true} : false);

DOM Spec , Demo Video , Explainer Doc

The kernel space means a memory space can only be touched by kernel. On 32bit linux it is 1G(from 0xC0000000 to 0xffffffff as virtual memory address).Every process created by kernel is also a kernel thread, So for one process, there are two stacks: one stack in user space for this process and another in kernel space for kernel thread.

the kernel stack occupied 2 pages(8k in 32bit linux), include a task_struct(about 1k) and the real stack(about 7k). The latter is used to store some auto variables or function call params or function address in kernel functions. Here is the code(Processor.h (linux\include\asm-i386)):

#define THREAD_SIZE (2*PAGE_SIZE)
#define alloc_task_struct() ((struct task_struct *) __get_free_pages(GFP_KERNEL,1))
#define free_task_struct(p) free_pages((unsigned long) (p), 1)

__get_free_pages(GFP_KERNEL,1)) means alloc memory as 2^1=2 pages.

But the process stack is another thing, its address is just bellow 0xC0000000(32bit linux), the size of it can be quite bigger, used for the user space function calls.

So here is a question come for system call, it is running in kernel space but was called by process in user space, how does it work? Will linux put its params and function address in kernel stack or process stack? Linux's solution: all system call are triggered by software interruption INT 0x80. Defined in entry.S (linux\arch\i386\kernel), here is some lines for example:

ENTRY(sys_call_table)
.long SYMBOL_NAME(sys_ni_syscall)   /* 0  -  old "setup()" system call*/
.long SYMBOL_NAME(sys_exit)
.long SYMBOL_NAME(sys_fork)
.long SYMBOL_NAME(sys_read)
.long SYMBOL_NAME(sys_write)
.long SYMBOL_NAME(sys_open)     /* 5 */
.long SYMBOL_NAME(sys_close)

Try to convert the value first (eg: 64M -> 64 * 1024 * 1024). After that, do comparison and print the result.

<?php
$memory_limit = ini_get('memory_limit');
if (preg_match('/^(\d+)(.)$/', $memory_limit, $matches)) {
    if ($matches[2] == 'M') {
        $memory_limit = $matches[1] * 1024 * 1024; // nnnM -> nnn MB
    } else if ($matches[2] == 'K') {
        $memory_limit = $matches[1] * 1024; // nnnK -> nnn KB
    }
}

$ok = ($memory_limit >= 64 * 1024 * 1024); // at least 64M?

echo '<phpmem>';
echo '<val>' . $memory_limit . '</val>';
echo '<ok>' . ($ok ? 1 : 0) . '</ok>';
echo '</phpmem>';

Please note that the above code is just an idea. Don't forget to handle -1 (no memory limit), integer-only value (value in bytes), G (value in gigabytes), k/m/g (value in kilobytes, megabytes, gigabytes because shorthand is case-insensitive), etc.

I do my array looping and getting filled defaults accordingly in Swift 4/5

   for index in 0..<3
    {
        let isIndexValid = allObjects.indices.contains(index)
        var yourObject:Class = Class()
        if isIndexValid { yourObject = allObjects[index]}
        resultArray.append(yourObject)
    }

I think requests.head instead of requests.get will be more safe to call when handling url redirect,check the github issue here:

r = requests.head(url, allow_redirects=True)
print(r.url)

based on several answers here, i found something that worked for me and i wanted to generalize and explain what's going on.

convert:

LEFT JOIN table2 t2 ON (t2.thing = t1.thing)

to:

LEFT JOIN table2 t2 ON (t2.p_key = (SELECT MIN(t2_.p_key) 
    FROM table2 t2_ WHERE (t2_.thing = t1.thing) LIMIT 1))

the condition that connects t1 and t2 is moved from the ON and into the inner query WHERE. the MIN(primary key) or LIMIT 1 makes sure that only 1 row is returned by the inner query.

after selecting one specific row we need to tell the ON which row it is. that's why the ON is comparing the primary key of the joined tabled.

you can play with the inner query (i.e. order+limit) but it must return one primary key of the desired row that will tell the ON the exact row to join.

Update - for MySQL 5.7+

another option relevant to MySQL 5.7+ is to use ANY_VALUE+GROUP BY. it will select an artist name that is not necessarily the first one.

SELECT feeds.*,ANY_VALUE(feeds_artists.name) artist_name
    FROM feeds 
    LEFT JOIN feeds_artists ON feeds.id = feeds_artists.feed_id 
GROUP BY feeds.id

more info about ANY_VALUE: https://dev.mysql.com/doc/refman/5.7/en/group-by-handling.html

Although the answer to strip all whitespace is neat, it doesn't really solve the problem that's posed, which is to find a regex. Take, for instance, my test script that downloads a web page and extracts all phone numbers using the regex. Since you'd need a regex anyway, you might as well have the regex do all the work. I came up with this:

1?\W*([2-9][0-8][0-9])\W*([2-9][0-9]{2})\W*([0-9]{4})(\se?x?t?(\d*))?

Here's a perl script to test it. When you match, $1 contains the area code, $2 and $3 contain the phone number, and $5 contains the extension. My test script downloads a file from the internet and prints all the phone numbers in it.

#!/usr/bin/perl

my $us_phone_regex =
        '1?\W*([2-9][0-8][0-9])\W*([2-9][0-9]{2})\W*([0-9]{4})(\se?x?t?(\d*))?';


my @tests =
(
"1-234-567-8901",
"1-234-567-8901 x1234",
"1-234-567-8901 ext1234",
"1 (234) 567-8901",
"1.234.567.8901",
"1/234/567/8901",
"12345678901",
"not a phone number"
);

foreach my $num (@tests)
{
        if( $num =~ m/$us_phone_regex/ )
        {
                print "match [$1-$2-$3]\n" if not defined $4;
                print "match [$1-$2-$3 $5]\n" if defined $4;
        }
        else
        {
                print "no match [$num]\n";
        }
}

#
# Extract all phone numbers from an arbitrary file.
#
my $external_filename =
        'http://web.textfiles.com/ezines/PHREAKSANDGEEKS/PnG-spring05.txt';
my @external_file = `curl $external_filename`;
foreach my $line (@external_file)
{
        if( $line =~ m/$us_phone_regex/ )
        {
                print "match $1 $2 $3\n";
        }
}

Edit:

You can change \W* to \s*\W?\s* in the regex to tighten it up a bit. I wasn't thinking of the regex in terms of, say, validating user input on a form when I wrote it, but this change makes it possible to use the regex for that purpose.

'1?\s*\W?\s*([2-9][0-8][0-9])\s*\W?\s*([2-9][0-9]{2})\s*\W?\s*([0-9]{4})(\se?x?t?(\d*))?';

I had same issue and now I finally resolved it. I am not using docker-compose file. I just added this line in my Docker file and it worked.

ENV CI=true

Reference: https://github.com/GoogleContainerTools/skaffold/issues/3882

A unit test tests code that you have complete control over whereas an integration test tests how your code uses or "integrates" with some other code.

So you would write unit tests to make sure your own libraries work as intended, and then write integration tests to make sure your code plays nicely with other code you are making use of, for instance a library.

Functional tests are related to integration tests, but refer more specifically to tests that test an entire system or application with all of the code running together, almost a super integration test.

Try this, at the end of the each loop, ids array will contain all the hexcodes.

var ids = [];

    $(document).ready(function($) {
    var $div = $("<div id='hexCodes'></div>").appendTo(document.body), code;
    $(".color_cell").each(function() {
        code = $(this).attr('id');
        ids.push(code);
        $div.append(code + "<br />");
    });



});

You don't need to convert it

switch(op)
{
     case Operator.PLUS:
     {
        // your code 
        // for plus operator
        break;
     }
     case Operator.MULTIPLY:
     {
        // your code 
        // for MULTIPLY operator
        break;
     }
     default: break;
}

By the way, use brackets

If you are looking for a compile time test and you are using gcc, you can do:

#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__

See gcc documentation for more information.

The thing you can do is create a .bat that will execute the .jar file created, checking if there is a JRE present.

From Mitch useful link (source)

java -classpath myprogram.jar de.vogella.eclipse.ide.first.MyFirstClass

This can be used into your batch...

The field separator in gawk (at least) can be a string as well as a character (it can also be a regex). If your data is consistent, then this will work:

awk -F "  " '{print $2,$1}' inputfile

That's two spaces between the double quotes.

/(?![[:alnum:]]|@|-|_|\.)./

Nowadays, if you use a HTML5 form with type=email then you're already by 80% safe since browser engines have their own validator. To complement it, add this regex to your preg_match_all() and negate it:

if (!preg_match_all("/(?![[:alnum:]]|@|-|_|\.)./",$email)) { .. }

Find the regex used by HTML5 forms for validation
https://regex101.com/r/mPEKmy/1

import os

path = chap_name

if not os.path.exists(path):
    os.makedirs(path)

filename = img_alt + '.jpg'
with open(os.path.join(path, filename), 'wb') as temp_file:
    temp_file.write(buff)

Key point is to use os.makedirs in place of os.mkdir. It is recursive, i.e. it generates all intermediate directories. See http://docs.python.org/library/os.html

Open the file in binary mode as you are storing binary (jpeg) data.

In response to Edit 2, if img_alt sometimes has '/' in it:

img_alt = os.path.basename(img_alt)

This also would work:

export LD_LIBRARY_PATH=/usr/lib/hadoop/lib/native

$users = Get-ADGroupMember -Identity 'Client Services' -Recursive ; $users.count

The above one-liner gives a clean count of recursive members found. Simple, easy, and one line.

if you're using jQuery you would have:

$('#elementId').change(function() { alert('Do Stuff'); });

or MS AJAX:

$addHandler($get('elementId'), 'change', function(){ alert('Do Stuff'); });

Or in the raw HTML of the element:

<input type="text" onchange="alert('Do Stuff');" id="myElement" />

After re-reading the question I think I miss-read what was to be done. I've never found a way to update a DOM element in a manner which will force a change event, what you're best doing is having a separate event handler method, like this:

$addHandler($get('elementId'), 'change', elementChanged);
function elementChanged(){
  alert('Do Stuff!');
}
function editElement(){
  var el = $get('elementId');
  el.value = 'something new';
  elementChanged();
}

Since you're already writing a JavaScript method which will do the changing it's only 1 additional line to call.

Or, if you are using the Microsoft AJAX framework you can access all the event handlers via:

$get('elementId')._events

It'd allow you to do some reflection-style workings to find the right event handler(s) to fire.

1 - remove the margin from your BODY CSS.

2 - wrap all of your html in a wrapper <div id="wrapper"> ... all your body content </div>

3 - Define the CSS for the wrapper:

This will hold everything together, centered on the page.

#wrapper {
    margin-left:auto;
    margin-right:auto;
    width:960px;
}

"Equivalent" is the word here

While...

$('#selectlist').val();

...is equivalent to...

document.getElementById("selectlist").value

...it's worth noting that...

$('#selectlist')

...although 'equivalent' is not the same as...

document.getElementById("selectlist")

...as the former returns a jQuery object, not a DOM object.

To get the DOM object(s) from the jQuery one, use the following:

$('#selectlist').get(); //get all DOM objects in the jQuery collection
$('#selectlist').get(0); //get the DOM object in the jQuery collection at index 0
$('#selectlist')[0]; //get the DOM objects in the jQuery collection at index 0

There is a fairly easy way to do this in PHP, if I understand your query, I assume that you code in PHP and you are using CSS and javascript to enhance the output.

The dynamic output from the database will carry a for loop to iterate through results which are then loaded into the table. Just add a function call to the like this:

echo "<tr style=".getbgc($i).">";  //this calls the function based on the iteration of the for loop.

then add the function to the page or library file:

function getbgc($trcount)
{

$blue="\"background-color: #EEFAF6;\"";
$green="\"background-color: #D4F7EB;\"";
$odd=$trcount%2;
    if($odd==1){return $blue;}
    else{return $green;}    

}

Now this will alternate dynamically between colors at each newly generated table row.

It's a lot easier than messing about with CSS that doesn't work on all browsers.

Hope this helps.

If an object's creation/existence dependents on another object which can't be tailored, its tight coupling. And, if the dependency can be tailored, its loose coupling. Consider an example in Java:

class Car {

    private Engine engine = new Engine( "X_COMPANY" ); // this car is being created with "X_COMPANY" engine
    // Other parts

    public Car() { 
        // implemenation 
    }

}

The client of Car class can create one with ONLY "X_COMPANY" engine.

Consider breaking this coupling with ability to change that:

class Car {

    private Engine engine;
    // Other members

    public Car( Engine engine ) { // this car can be created with any Engine type
        this.engine = engine;
    }

}

Now, a Car is not dependent on an engine of "X_COMPANY" as it can be created with types.

A Java specific note: using Java interfaces just for de-coupling sake is not a proper desing approach. In Java, an interface has a purpose - to act as a contract which intrisically provides de-coupling behavior/advantage.

Bill Rosmus's comment in accepted answer has a good explanation.

Scaling horizontally ===> Thousands of minions will do the work together for you.

Scaling vertically ===> One big hulk will do all the work for you.

Try explicitly specify sc.textFile("file:///path to the file/"). The error occurs when Hadoop environment is set.

SparkContext.textFile internally calls org.apache.hadoop.mapred.FileInputFormat.getSplits, which in turn uses org.apache.hadoop.fs.getDefaultUri if schema is absent. This method reads "fs.defaultFS" parameter of Hadoop conf. If you set HADOOP_CONF_DIR environment variable, the parameter is usually set as "hdfs://..."; otherwise "file://".

For Windows:

1. Install the necessary plugins for the repository (ex: GitHub install GitHub and GitHub Authentication plugins) in Jenkins.
2. You can generate a key with Putty key generator, or by running the following command in git bash: $ ssh-keygen -t rsa -b 4096 -C [email protected]
3. Private key must be OpenSSH. You can convert your private key to OpenSSH in putty key generator
4. SSH keys come in pairs, public and private. Public keys are inserted in the repository to be cloned. Private keys are saved as credentials in Jenkins
5. You need to copy the SSH URL not the HTTPS to work with ssh keys.

You need the xml.etree.ElementTree.fromstring(text)

from xml.etree.ElementTree import XML, fromstring
myxml = fromstring(text)

So, for future reference for anybody who doesn't want to spend two days searching the internet to figure this out, when you encode byte arrays into QR Codes, you have to use the ISO-8859-1character set, not UTF-8.

you can use key to reload child component using key

<component :is="child1" :filter="filter" :key="componentKey"></component>

If you want to reload component with new filter, if button click filter the child component

reloadData() {            
   this.filter = ['filter1','filter2']
   this.componentKey += 1;  
},

and use the filter to trigger the function

Use your bean class like this, if your JSON data starts with an an array object. it helps you.

Users[] bean = gson.fromJson(response,Users[].class);

Users is my bean class.

Response is my JSON data.

update ubuntu:

 sudo apt-get update
 sudo apt-get install git-core curl zlib1g-dev build-essential libssl-dev libreadline-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt1-dev libcurl4-openssl-dev python-software-properties libffi-dev

Install rvm, which manages the ruby versions:

to install rvm use the following command.

 \curl -sSL https://get.rvm.io | bash -s stable
 source ~/.bash_profile
 rvm install ruby-2.1.4

Check ruby versions installed and in use:

rvm list
rvm use --default ruby-2.1.4

VAR1=value1 VAR2=value2 myScript args ...

Google will eventually block your IP when you exceed a certain amount of requests.

It is possible to set environment variables on Mac OS X 10.10 Yosemite with 3 files + 2 commands.

Main file with environment variables definition:

$ ls -la /etc/environment 
-r-xr-xr-x  1 root  wheel  369 Oct 21 04:42 /etc/environment
$ cat /etc/environment
#!/bin/sh

set -e

syslog -s -l warn "Set environment variables with /etc/environment $(whoami) - start"

launchctl setenv JAVA_HOME      /usr/local/jdk1.7
launchctl setenv MAVEN_HOME     /opt/local/share/java/maven3

if [ -x /usr/libexec/path_helper ]; then
    export PATH=""
    eval `/usr/libexec/path_helper -s`
    launchctl setenv PATH $PATH
fi

osascript -e 'tell app "Dock" to quit'

syslog -s -l warn "Set environment variables with /etc/environment $(whoami) - complete"

Service definition to load environment variables for user applications (terminal, IDE, ...):

$ ls -la /Library/LaunchAgents/environment.user.plist
-rw-------  1 root  wheel  504 Oct 21 04:37 /Library/LaunchAgents/environment.user.plist
$ sudo cat /Library/LaunchAgents/environment.user.plist
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>Label</key>
    <string>environment.user</string>
    <key>ProgramArguments</key>
    <array>
            <string>/etc/environment</string>
    </array>
    <key>KeepAlive</key>
    <false/>
    <key>RunAtLoad</key>
    <true/>
    <key>WatchPaths</key>
    <array>
        <string>/etc/environment</string>
    </array>
</dict>
</plist>

The same service definition for root user applications:

$ ls -la /Library/LaunchDaemons/environment.plist
-rw-------  1 root  wheel  499 Oct 21 04:38 /Library/LaunchDaemons/environment.plist
$ sudo cat /Library/LaunchDaemons/environment.plist
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>Label</key>
    <string>environment</string>
    <key>ProgramArguments</key>
    <array>
            <string>/etc/environment</string>
    </array>
    <key>KeepAlive</key>
    <false/>
    <key>RunAtLoad</key>
    <true/>
    <key>WatchPaths</key>
    <array>
        <string>/etc/environment</string>
    </array>
</dict>
</plist>

And finally we should register these services:

$ launchctl load -w /Library/LaunchAgents/environment.user.plist
$ sudo launchctl load -w /Library/LaunchDaemons/environment.plist

What we get:

1. The only place to declare system environment variables: /etc/environment
2. Instant auto-update of environment variables after modification of /etc/environment file - just relaunch your application

Issues / problems:

In order your env variables were correctly taken by applications after system reboot you will need:

• either login twice: login => logout => login
• or close & re-open applications manually, where env variables should be taken
• or do NOT use feature "Reopen windows when logging back".

This happens due to Apple denies explicit ordering of loaded services, so env variables are registered in parallel with processing of the "reopen queue".

But actually, I reboot my system only several times per year (on big updates), so it is not a big deal.

If you are testing for file existence you want -e not -L. -L tests for a symlink.

Update now Chrome also supports MediaRecorder API from v47. The same thing to do would be to use it( guessing native recording method is bound to be faster than work arounds), the API is really easy to use, and you would find tons of answers as to how to upload a blob for the server.

Demo - would work in Chrome and Firefox, intentionally left out pushing blob to server...

Code Source

Currently, there are three ways to do it:

1. as wav[ all code client-side, uncompressed recording], you can check out --> Recorderjs. Problem: file size is quite big, more upload bandwidth required.
2. as mp3[ all code client-side, compressed recording], you can check out --> mp3Recorder. Problem: personally, I find the quality bad, also there is this licensing issue.

3. as ogg [ client+ server(node.js) code, compressed recording, infinite hours of recording without browser crash ], you can check out --> recordOpus, either only client-side recording, or client-server bundling, the choice is yours.

   ogg recording example( only firefox):

   var mediaRecorder = new MediaRecorder(stream);
   mediaRecorder.start();  // to start recording.    
   ...
   mediaRecorder.stop();   // to stop recording.
   mediaRecorder.ondataavailable = function(e) {
       // do something with the data.
   }
   

   Fiddle Demo for ogg recording.

If you HAVE to, and you don't mind a hack, you could let serialization do the work for you.

Given these classes:

public class ParentObj
{
    public string Name { get; set; }
}

public class ChildObj : ParentObj
{
    public string Value { get; set; }
}

You can create a child instance from a parent instance like so:

var parent = new ParentObj() { Name = "something" };
var serialized = JsonConvert.SerializeObject(parent);
var child = JsonConvert.DeserializeObject<ChildObj>(serialized);

This assumes your objects play nice with serialization, obv.

Be aware that this is probably going to be slower than an explicit converter.

Hey this is pretty simple to solve this error.Just follow this steps:

First uninstall any existing installation:

pip uninstall scikit-image

or, on conda-based systems:

conda uninstall scikit-image

Now, clone scikit-image on your local computer, and install:

git clone https://github.com/scikit-image/scikit-image.git
cd scikit-image
pip install -e .

To update the installation:

git pull  # Grab latest source
pip install -e .  # Reinstall

For other os and manual process please check this Link.

Its Ctrl + Shift + r

For me, there was only one option to discard all.

x^y is not "x to the power of y". It's "x XOR y".

In addition to reg.exe, I highly recommend that you also check out powershell, its vastly more capable in its registry handling.

public async Task<object> PassImageWithText(IFormFile files)
{
    byte[] data;
    string result = "";
    ByteArrayContent bytes;

    MultipartFormDataContent multiForm = new MultipartFormDataContent();

    try
    {
        using (var client = new HttpClient())
        {
            using (var br = new BinaryReader(files.OpenReadStream()))
            {
                data = br.ReadBytes((int)files.OpenReadStream().Length);
            }

            bytes = new ByteArrayContent(data);
            multiForm.Add(bytes, "files", files.FileName);
            multiForm.Add(new StringContent("value1"), "key1");
            multiForm.Add(new StringContent("value2"), "key2");

            var res = await client.PostAsync(_MEDIA_ADD_IMG_URL, multiForm);
        }
    }
    catch (Exception e)
    {
        throw new Exception(e.ToString());
    }

    return result;
}

You can also use -match against a Regular expression. Ex:

if ($dbUserName -match ".{8}" )
{
    Write-Output " Please enter more than 8 characters "
    $dbUserName=read-host " Re-enter database user name"
}

Also if you're like me and like your curly braces to be in the same horizontal position for your code blocks, you can put that on a new line, since it's expecting a code block it will look on next line. In some commands where the first curly brace has to be in-line with your command, you can use a grave accent marker (`) to tell powershell to treat the next line as a continuation.

Your understanding is mostly correct. You use select_related when the object that you're going to be selecting is a single object, so OneToOneField or a ForeignKey. You use prefetch_related when you're going to get a "set" of things, so ManyToManyFields as you stated or reverse ForeignKeys. Just to clarify what I mean by "reverse ForeignKeys" here's an example:

class ModelA(models.Model):
    pass

class ModelB(models.Model):
    a = ForeignKey(ModelA)

ModelB.objects.select_related('a').all() # Forward ForeignKey relationship
ModelA.objects.prefetch_related('modelb_set').all() # Reverse ForeignKey relationship

The difference is that select_related does an SQL join and therefore gets the results back as part of the table from the SQL server. prefetch_related on the other hand executes another query and therefore reduces the redundant columns in the original object (ModelA in the above example). You may use prefetch_related for anything that you can use select_related for.

The tradeoffs are that prefetch_related has to create and send a list of IDs to select back to the server, this can take a while. I'm not sure if there's a nice way of doing this in a transaction, but my understanding is that Django always just sends a list and says SELECT ... WHERE pk IN (...,...,...) basically. In this case if the prefetched data is sparse (let's say U.S. State objects linked to people's addresses) this can be very good, however if it's closer to one-to-one, this can waste a lot of communications. If in doubt, try both and see which performs better.

Everything discussed above is basically about the communications with the database. On the Python side however prefetch_related has the extra benefit that a single object is used to represent each object in the database. With select_related duplicate objects will be created in Python for each "parent" object. Since objects in Python have a decent bit of memory overhead this can also be a consideration.

If the response is not to be consumed, then the request can be aborted using the code below:

// Low level resources should be released before initiating a new request
HttpEntity entity = response.getEntity();

if (entity != null) {
    // Do not need the rest
    httpPost.abort();
}

Reference: http://hc.apache.org/httpcomponents-client-ga/tutorial/html/fundamentals.html#d5e143

Apache HttpClient Version: 4.1.3

Option Explicit

Private Sub CommandButton1_Click()
Dim mode As String
Dim RecordId As Integer
Dim Resultid As Integer
Dim sourcewb As Workbook
Dim targetwb As Workbook
Dim SourceRowCount As Long
Dim TargetRowCount As Long
Dim SrceFile As String
Dim TrgtFile As String
Dim TitleId As Integer
Dim TestPassCount As Integer
Dim TestFailCount As Integer
Dim myWorkbook1 As Workbook
Dim myWorkbook2 As Workbook


TitleId = 4
Resultid = 0

Dim FileName1, FileName2 As String
Dim Difference As Long



'TestPassCount = 0
'TestFailCount = 0

'Retrieve number of records in the TestData SpreadSheet
Dim TestDataRowCount As Integer
TestDataRowCount = Worksheets("TestData").UsedRange.Rows.Count

If (TestDataRowCount <= 2) Then
  MsgBox "No records to validate.Please provide test data in Test Data SpreadSheet"
Else
  For RecordId = 3 To TestDataRowCount
    RefreshResultSheet

    'Source File row count
    SrceFile = Worksheets("TestData").Range("D" & RecordId).Value
    Set sourcewb = Workbooks.Open(SrceFile)
    With sourcewb.Worksheets(1)
      SourceRowCount = .Cells(.Rows.Count, "A").End(xlUp).row
      sourcewb.Close
    End With

    'Target File row count
    TrgtFile = Worksheets("TestData").Range("E" & RecordId).Value
    Set targetwb = Workbooks.Open(TrgtFile)
    With targetwb.Worksheets(1)
      TargetRowCount = .Cells(.Rows.Count, "A").End(xlUp).row
      targetwb.Close
    End With

    ' Set Row Count Result Test data value
    TitleId = TitleId + 3
    Worksheets("Result").Range("A" & TitleId).Value = Worksheets("TestData").Range("A" & RecordId).Value

    'Compare Source and Target Row count
    Resultid = TitleId + 1
    Worksheets("Result").Range("A" & Resultid).Value = "Source and Target record Count"
    If (SourceRowCount = TargetRowCount) Then
       Worksheets("Result").Range("B" & Resultid).Value = "Passed"
       Worksheets("Result").Range("C" & Resultid).Value = "Source Row Count: " & SourceRowCount & " & " & " Target Row Count: " & TargetRowCount
       TestPassCount = TestPassCount + 1
    Else
      Worksheets("Result").Range("B" & Resultid).Value = "Failed"
      Worksheets("Result").Range("C" & Resultid).Value = "Source Row Count: " & SourceRowCount & " & " & " Target Row Count: " & TargetRowCount
      TestFailCount = TestFailCount + 1
    End If


    'For comparison of two files

    FileName1 = Worksheets("TestData").Range("D" & RecordId).Value
    FileName2 = Worksheets("TestData").Range("E" & RecordId).Value

    Set myWorkbook1 = Workbooks.Open(FileName1)
    Set myWorkbook2 = Workbooks.Open(FileName2)

    Difference = Compare2WorkSheets(myWorkbook1.Worksheets("Sheet1"), myWorkbook2.Worksheets("Sheet1"))
    myWorkbook1.Close
    myWorkbook2.Close


    'MsgBox Difference

    'Set Result of data validation in result sheet
    Resultid = Resultid + 1

    Worksheets("Result").Activate
    Worksheets("Result").Range("A" & Resultid).Value = "Data validation of source and target File"

    If Difference > 0 Then
        Worksheets("Result").Range("B" & Resultid).Value = "Failed"
        Worksheets("Result").Range("C" & Resultid).Value = Difference & " cells contains different data!"
        TestFailCount = TestFailCount + 1
    Else
      Worksheets("Result").Range("B" & Resultid).Value = "Passed"
      Worksheets("Result").Range("C" & Resultid).Value = Difference & " cells contains different data!"
      TestPassCount = TestPassCount + 1
    End If


  Next RecordId
End If

UpdateTestExecData TestPassCount, TestFailCount
End Sub

Sub RefreshResultSheet()
  Worksheets("Result").Activate
  Worksheets("Result").Range("B1:B4").Select
  Selection.ClearContents
  Worksheets("Result").Range("D1:D4").Select
  Selection.ClearContents
  Worksheets("Result").Range("B1").Value = Worksheets("Instructions").Range("D3").Value
  Worksheets("Result").Range("B2").Value = Worksheets("Instructions").Range("D4").Value
  Worksheets("Result").Range("B3").Value = Worksheets("Instructions").Range("D6").Value
  Worksheets("Result").Range("B4").Value = Worksheets("Instructions").Range("D5").Value
End Sub

Sub UpdateTestExecData(TestPassCount As Integer, TestFailCount As Integer)
  Worksheets("Result").Range("D1").Value = TestPassCount + TestFailCount
  Worksheets("Result").Range("D2").Value = TestPassCount
  Worksheets("Result").Range("D3").Value = TestFailCount
  Worksheets("Result").Range("D4").Value = ((TestPassCount / (TestPassCount + TestFailCount)))
End Sub

Python and all other imperative programming languages execute one command after another. Therefore, you can just write:

first  = raw_input('Enter 1st number: ')
second = raw_input('Enter second number: ')

Then, you can operate on the variables first and second. For example, you can convert the strings stored in them to integers and multiply them:

product = int(first) * int(second)
print('The product of the two is ' + str(product))

I faced an another use case where I got the similar error. When At first I got the error, I panicked, and removed /data/data/{package.name} After that I tried, and my problem was still present. Then I tried uninstall, it failed.

I then removed the apk file present in /system/app (required root access), and tried uninstall and it was successfull.

After that I tried re-installing the apk, it worked.

You will need to install the Apple Developer Tools. Once you have done that, the easiest thing is to either use the Xcode IDE or use gcc, or nowadays better cc (the clang LLVM compiler), from the command line.

According to Apple's site, the latest version of Xcode (3.2.1) only runs on Snow Leopard (10.6) so if you have an earlier version of OS X you will need to use an older version of Xcode. Your Mac should have come with a Developer Tools DVD which will contain a version that should run on your system. Also, the Apple Developer Tools site still has older versions available for download. Xcode 3.1.4 should run on Leopard (10.5).

Python 3 also provide a few simple ways to get it:

$ python3 -c "import os; print(os.cpu_count());"

4

$ python3 -c "import multiprocessing; print(multiprocessing.cpu_count())"

4

I use the AbsoluteUri and you can get it like this:

string myURI = Request.Url.AbsoluteUri;
 if (!WebSecurity.IsAuthenticated) {
        Response.Redirect("~/Login?returnUrl="
            + Request.Url.AbsoluteUri );

Then after you login:

var returnUrl = Request.QueryString["returnUrl"];
 if(WebSecurity.Login(username,password,true)){
                Context.RedirectLocal(returnUrl);

It works well for me.

urllib2.urlopen does an HTTP GET (or POST if you supply a data argument), not an HTTP HEAD (if it did the latter, you couldn't do readlines or other accesses to the page body, of course).

My situation was settings text color in the options menu (main app menu showed on menu button press).

Tested in API 16 with appcompat-v7-27.0.2 library, AppCompatActivity for MainActivity and AppCompat theme for the application in AndroidManifest.xml.

styles.xml:

<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
  <item name="actionBarPopupTheme">@style/PopupTheme</item>
</style>

<style name="PopupTheme" parent="@style/ThemeOverlay.AppCompat.Light">
  <item name="android:textColorSecondary">#f00</item>
</style>

Don't know if that textColorSecondary affects other elements but it controls the menu text color.

I searched some examples on the topic but all ready-to-use snippets didn't work.

So I wanted to investigate it with the source code for the appcompat-v7 library (specifically with the res folder of the .aar package).

Though in my case I used Eclipse with exploded .aar dependencies. So I could change the default styles and check the results. Don't know how to explode the libraries to use with Gradle or Android Studio directly. It deserves another thread of investigation.

So my purpose was so find which color in the res/values/values.xml file is used for the menu text (I was almost sure the color was there).

1. I opened that file, then duplicated all colors, put them below the default ones to override them and assigned #f00 value to all of them.
2. Start the app.
3. Many elements had red background or text color. And the menu items too. That was what I needed.
4. Removing my added colors by blocks of 5-10 lines I ended with the secondary_text_default_material_light color item.
5. Searching that name in the files within the res folder (or better within res/colors) I found only one occurrence in the color/abc_secondary_text_material_light.xml file (I used Sublime Text for these operations so it's easier to find thing I need).
6. Back to the values.xml 8 usages were found for the @color/abc_secondary_text_material_light.
7. It was a Light theme so 4 left in 2 themes: Base.ThemeOverlay.AppCompat.Light and Platform.AppCompat.Light.
8. The first theme was a child of the second one so there were only 2 attributes with that color resource: android:textColorSecondary and android:textColorTertiaryin the Base.ThemeOverlay.AppCompat.Light.
9. Changing their values directly in the values.xml and running the app I found that the final correct attribute was android:textColorSecondary.
10. Next I needed a theme or another attribute so I could change it in my app's style.xml (because my theme had as the parent the Theme.AppCompat.Light and not the ThemeOverlay.AppCompat.Light).
11. I searched in the same file for the Base.ThemeOverlay.AppCompat.Light. It had a child ThemeOverlay.AppCompat.Light.
12. Searching for the ThemeOverlay.AppCompat.Light I found its usage in the Base.Theme.AppCompat.Light.DarkActionBar theme as the actionBarPopupTheme attribute value.
13. My app's theme Theme.AppCompat.Light.DarkActionBar was a child of the found Base.Theme.AppCompat.Light.DarkActionBar so I could use that attribute in my styles.xml without problems.
14. As it's seen in the example code above I created a child theme from the mentioned ThemeOverlay.AppCompat.Light and changed the android:textColorSecondary attribute.

You can use MemberwiseClone

obj myobj2 = (obj)myobj.MemberwiseClone();

The copy is a shallow copy which means the reference properties in the clone are pointing to the same values as the original object but that shouldn't be an issue in your case as the properties in obj are of value types.

If you own the source code, you can also implement ICloneable

A few solutions to choose from:

json_pp: command utility available in Linux systems for JSON decoding/encoding

echo '{"type":"Bar","id":"1","title":"Foo"}' | json_pp -json_opt pretty,canonical
{
   "id" : "1",
   "title" : "Foo",
   "type" : "Bar"
}

You may want to keep the -json_opt pretty,canonical argument for predictable ordering.

jq: lightweight and flexible command-line JSON processor. It is written in portable C, and it has zero runtime dependencies.

echo '{"type":"Bar","id":"1","title":"Foo"}' | jq '.'
{
  "type": "Bar",
  "id": "1",
  "title": "Foo"
}

The simplest jq program is the expression ., which takes the input and produces it unchanged as output.

For additinal jq options check the manual

with python:

echo '{"type":"Bar","id":"1","title":"Foo"}' | python -m json.tool
{
    "id": "1",
    "title": "Foo",
    "type": "Bar"
}

with nodejs and bash:

echo '{"type":"Bar","id":"1","title":"Foo"}' | node -e "console.log( JSON.stringify( JSON.parse(require('fs').readFileSync(0) ), 0, 1 ))"
{
 "type": "Bar",
 "id": "1",
 "title": "Foo"
}

I totally agree with @jemmons:

But this should not be the default pattern you follow when dealing with blocks that call self! This should only be used to break what would otherwise be a retain cycle between self and the block. If you were to adopt this pattern everywhere, you'd run the risk of passing a block to something that got executed after self was deallocated.

//SUSPICIOUS EXAMPLE:
__weak MyObject *weakSelf = self;
[[SomeOtherObject alloc] initWithCompletion:^{
  //By the time this gets called, "weakSelf" might be nil because it's not  retained!
  [weakSelf doSomething];
}];

To overcome this problem one can define a strong reference over the weakSelf inside the block:

__weak MyObject *weakSelf = self;
[[SomeOtherObject alloc] initWithCompletion:^{
  MyObject *strongSelf = weakSelf;
  [strongSelf doSomething];
}];

Spend 30 mins doing the vim tutorial (run vimtutor instead of vim in terminal). You will learn the basic movements, and some keystrokes, this will make you at least as productive with vim as with the text editor you used before. After that, well, read Jim Dennis' answer again :)

As a quick workaround I just saved the workbook as an Excel 97-2003 .xls file. I was able to import with that format with no error.

If the variable ax.xaxis._autolabelpos = True, matplotlib sets the label position in function _update_label_position in axis.py according to (some excerpts):

    bboxes, bboxes2 = self._get_tick_bboxes(ticks_to_draw, renderer)
    bbox = mtransforms.Bbox.union(bboxes)
    bottom = bbox.y0
    x, y = self.label.get_position()
    self.label.set_position((x, bottom - self.labelpad * self.figure.dpi / 72.0))

You can set the label position independently of the ticks by using:

    ax.xaxis.set_label_coords(x0, y0)

that sets _autolabelpos to False or as mentioned above by changing the labelpad parameter.

My issue was, i am unable to create a view with my "scott" user in oracle 11g edition. So here is my solution for this

Error in my case

SQL>create view v1 as select * from books where id=10;

insufficient privileges.

Solution

1)open your cmd and change your directory to where you install your oracle database. in my case i was downloaded in E drive so my location is E:\app\B_Amar\product\11.2.0\dbhome_1\BIN> after reaching in the position you have to type sqlplus sys as sysdba

E:\app\B_Amar\product\11.2.0\dbhome_1\BIN>sqlplus sys as sysdba

2) Enter password: here you have to type that password that you give at the time of installation of oracle software.

3) Here in this step if you want create a new user then you can create otherwise give all the privileges to existing user.

for creating new user

SQL> create user abc identified by xyz;

here abc is user and xyz is password.

giving all the privileges to abc user

SQL> grant all privileges to abc;

 grant succeeded. 

if you are seen this message then all the privileges are giving to the abc user.

4) Now exit from cmd, go to your SQL PLUS and connect to the user i.e enter your username & password.Now you can happily create view.

In My case

in cmd E:\app\B_Amar\product\11.2.0\dbhome_1\BIN>sqlplus sys as sysdba

SQL> grant all privileges to SCOTT;

grant succeeded.

Now I can create views.

You need the change those double quotation marks into singles. ie. if (answer == 'y') returns true;

Here is some info on String Literals in C++: http://msdn.microsoft.com/en-us/library/69ze775t%28VS.80%29.aspx

public static boolean isEmailValid(String email) {
    boolean isValid = false;

    String expression = "^[\\w\\.-]+@([\\w\\-]+\\.)+[A-Z]{2,4}$";
    CharSequence inputStr = email;

    Pattern pattern = Pattern.compile(expression, Pattern.CASE_INSENSITIVE);
    Matcher matcher = pattern.matcher(inputStr);
    if (matcher.matches()) {
        isValid = true;
    }
    return isValid;
}

I got the same error while using Entity Framework 6 with SQL Server Compact 4.0. The article on MSDN for Entity Framework Providers for EF6 was helpful. Running the respective provider commands as nuget packages at Package Manager Console might solve the problem, as also NuGet packages will automatically add registrations to the config file. I ran PM> Install-Package EntityFramework.SqlServerCompact to solve the problem.

Calling toDate will create a copy (the documentation is down-right wrong about it not being a copy), of the underlying JS Date object. JS Date object is stored in UTC and will always print to eastern time. Without getting into whether .utc() modifies the underlying object that moment wraps use the code below.

You don't need moment for this.

new Date().getTime()

This works, because JS Date at its core is in UTC from the Unix Epoch. It's extraordinarily confusing and I believe a big flaw in the interface to mix local and UTC times like this with no descriptions in the methods.

You could use the .NET library to do the same thing which i believe is more straightforward.

string ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0; data source={path of your excel file}; Extended Properties=Excel 12.0;";

        OleDbConnection objConn = null;
        System.Data.DataTable dt = null;
        //Create connection object by using the preceding connection string.
        objConn = new OleDbConnection(connString);
        objConn.Open();
        //Get the data table containg the schema guid.
        dt = objConn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
        string sql = string.Format("select * from [{0}$]", sheetName);
        var adapter = new System.Data.OleDb.OleDbDataAdapter(sql, ConnectionString);
        var ds = new System.Data.DataSet();
        string tableName = sheetName;
        adapter.Fill(ds, tableName);
        System.Data.DataTable data = ds.Tables[tableName];

After you have your data in the datatable you can access them as you would normally do with a DataTable class.

I think that you have Spring Security on your class path and then spring security is automatically configured with a default user and generated password

Please look into your pom.xml file for:

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

If you have that in your pom than you should have a log console message like this:

Using default security password: ce6c3d39-8f20-4a41-8e01-803166bb99b6

And in the browser prompt you will import the user user and the password printed in the console.

Or if you want to configure spring security you can take a look at Spring Boot secured example

It is explained in the Spring Boot Reference documentation in the Security section, it indicates:

The default AuthenticationManager has a single user (‘user’ username and random password, printed at `INFO` level when the application starts up)

Using default security password: 78fa095d-3f4c-48b1-ad50-e24c31d5cf35

check with one query if email or phoneNumber already exists in DB

let userDB = await UserS.findOne({ $or: [
  { email: payload.email },
  { phoneNumber: payload.phoneNumber }
] })

if (userDB) {
  if (payload.email == userDB.email) {
    throw new BadRequest({ message: 'E-mail already exists' })
  } else if (payload.phoneNumber == userDB.phoneNumber) {
    throw new BadRequest({ message: 'phoneNumber already exists' })
  }
}

I think there are problems with most of these, including the accepted answer, because they don't work well with Linq over IQueryable either due to doing too many server round trips and too much data returns, or doing too much client execution.

For IEnumerable I don't like Sehe's answer or similar because it has excessive memory use (a simple 10000000 two list test ran Linqpad out of memory on my 32GB machine).

Also, most of the others don't actually implement a proper Full Outer Join because they are using a Union with a Right Join instead of Concat with a Right Anti Semi Join, which not only eliminates the duplicate inner join rows from the result, but any proper duplicates that existed originally in the left or right data.

So here are my extensions that handle all of these issues, generate SQL as well as implementing the join in LINQ to SQL directly, executing on the server, and is faster and with less memory than others on Enumerables:

public static class Ext {
    public static IEnumerable<TResult> LeftOuterJoin<TLeft, TRight, TKey, TResult>(
        this IEnumerable<TLeft> leftItems,
        IEnumerable<TRight> rightItems,
        Func<TLeft, TKey> leftKeySelector,
        Func<TRight, TKey> rightKeySelector,
        Func<TLeft, TRight, TResult> resultSelector) {

        return from left in leftItems
               join right in rightItems on leftKeySelector(left) equals rightKeySelector(right) into temp
               from right in temp.DefaultIfEmpty()
               select resultSelector(left, right);
    }

    public static IEnumerable<TResult> RightOuterJoin<TLeft, TRight, TKey, TResult>(
        this IEnumerable<TLeft> leftItems,
        IEnumerable<TRight> rightItems,
        Func<TLeft, TKey> leftKeySelector,
        Func<TRight, TKey> rightKeySelector,
        Func<TLeft, TRight, TResult> resultSelector) {

        return from right in rightItems
               join left in leftItems on rightKeySelector(right) equals leftKeySelector(left) into temp
               from left in temp.DefaultIfEmpty()
               select resultSelector(left, right);
    }

    public static IEnumerable<TResult> FullOuterJoinDistinct<TLeft, TRight, TKey, TResult>(
        this IEnumerable<TLeft> leftItems,
        IEnumerable<TRight> rightItems,
        Func<TLeft, TKey> leftKeySelector,
        Func<TRight, TKey> rightKeySelector,
        Func<TLeft, TRight, TResult> resultSelector) {

        return leftItems.LeftOuterJoin(rightItems, leftKeySelector, rightKeySelector, resultSelector).Union(leftItems.RightOuterJoin(rightItems, leftKeySelector, rightKeySelector, resultSelector));
    }

    public static IEnumerable<TResult> RightAntiSemiJoin<TLeft, TRight, TKey, TResult>(
        this IEnumerable<TLeft> leftItems,
        IEnumerable<TRight> rightItems,
        Func<TLeft, TKey> leftKeySelector,
        Func<TRight, TKey> rightKeySelector,
        Func<TLeft, TRight, TResult> resultSelector) {

        var hashLK = new HashSet<TKey>(from l in leftItems select leftKeySelector(l));
        return rightItems.Where(r => !hashLK.Contains(rightKeySelector(r))).Select(r => resultSelector(default(TLeft),r));
    }

    public static IEnumerable<TResult> FullOuterJoin<TLeft, TRight, TKey, TResult>(
        this IEnumerable<TLeft> leftItems,
        IEnumerable<TRight> rightItems,
        Func<TLeft, TKey> leftKeySelector,
        Func<TRight, TKey> rightKeySelector,
        Func<TLeft, TRight, TResult> resultSelector)  where TLeft : class {

        return leftItems.LeftOuterJoin(rightItems, leftKeySelector, rightKeySelector, resultSelector).Concat(leftItems.RightAntiSemiJoin(rightItems, leftKeySelector, rightKeySelector, resultSelector));
    }

    private static Expression<Func<TP, TC, TResult>> CastSMBody<TP, TC, TResult>(LambdaExpression ex, TP unusedP, TC unusedC, TResult unusedRes) => (Expression<Func<TP, TC, TResult>>)ex;

    public static IQueryable<TResult> LeftOuterJoin<TLeft, TRight, TKey, TResult>(
        this IQueryable<TLeft> leftItems,
        IQueryable<TRight> rightItems,
        Expression<Func<TLeft, TKey>> leftKeySelector,
        Expression<Func<TRight, TKey>> rightKeySelector,
        Expression<Func<TLeft, TRight, TResult>> resultSelector) {

        var sampleAnonLR = new { left = default(TLeft), rightg = default(IEnumerable<TRight>) };
        var parmP = Expression.Parameter(sampleAnonLR.GetType(), "p");
        var parmC = Expression.Parameter(typeof(TRight), "c");
        var argLeft = Expression.PropertyOrField(parmP, "left");
        var newleftrs = CastSMBody(Expression.Lambda(Expression.Invoke(resultSelector, argLeft, parmC), parmP, parmC), sampleAnonLR, default(TRight), default(TResult));

        return leftItems.AsQueryable().GroupJoin(rightItems, leftKeySelector, rightKeySelector, (left, rightg) => new { left, rightg }).SelectMany(r => r.rightg.DefaultIfEmpty(), newleftrs);
    }

    public static IQueryable<TResult> RightOuterJoin<TLeft, TRight, TKey, TResult>(
        this IQueryable<TLeft> leftItems,
        IQueryable<TRight> rightItems,
        Expression<Func<TLeft, TKey>> leftKeySelector,
        Expression<Func<TRight, TKey>> rightKeySelector,
        Expression<Func<TLeft, TRight, TResult>> resultSelector) {

        var sampleAnonLR = new { leftg = default(IEnumerable<TLeft>), right = default(TRight) };
        var parmP = Expression.Parameter(sampleAnonLR.GetType(), "p");
        var parmC = Expression.Parameter(typeof(TLeft), "c");
        var argRight = Expression.PropertyOrField(parmP, "right");
        var newrightrs = CastSMBody(Expression.Lambda(Expression.Invoke(resultSelector, parmC, argRight), parmP, parmC), sampleAnonLR, default(TLeft), default(TResult));

        return rightItems.GroupJoin(leftItems, rightKeySelector, leftKeySelector, (right, leftg) => new { leftg, right }).SelectMany(l => l.leftg.DefaultIfEmpty(), newrightrs);
    }

    public static IQueryable<TResult> FullOuterJoinDistinct<TLeft, TRight, TKey, TResult>(
        this IQueryable<TLeft> leftItems,
        IQueryable<TRight> rightItems,
        Expression<Func<TLeft, TKey>> leftKeySelector,
        Expression<Func<TRight, TKey>> rightKeySelector,
        Expression<Func<TLeft, TRight, TResult>> resultSelector) {

        return leftItems.LeftOuterJoin(rightItems, leftKeySelector, rightKeySelector, resultSelector).Union(leftItems.RightOuterJoin(rightItems, leftKeySelector, rightKeySelector, resultSelector));
    }

    private static Expression<Func<TP, TResult>> CastSBody<TP, TResult>(LambdaExpression ex, TP unusedP, TResult unusedRes) => (Expression<Func<TP, TResult>>)ex;

    public static IQueryable<TResult> RightAntiSemiJoin<TLeft, TRight, TKey, TResult>(
        this IQueryable<TLeft> leftItems,
        IQueryable<TRight> rightItems,
        Expression<Func<TLeft, TKey>> leftKeySelector,
        Expression<Func<TRight, TKey>> rightKeySelector,
        Expression<Func<TLeft, TRight, TResult>> resultSelector) {

        var sampleAnonLgR = new { leftg = default(IEnumerable<TLeft>), right = default(TRight) };
        var parmLgR = Expression.Parameter(sampleAnonLgR.GetType(), "lgr");
        var argLeft = Expression.Constant(default(TLeft), typeof(TLeft));
        var argRight = Expression.PropertyOrField(parmLgR, "right");
        var newrightrs = CastSBody(Expression.Lambda(Expression.Invoke(resultSelector, argLeft, argRight), parmLgR), sampleAnonLgR, default(TResult));

        return rightItems.GroupJoin(leftItems, rightKeySelector, leftKeySelector, (right, leftg) => new { leftg, right }).Where(lgr => !lgr.leftg.Any()).Select(newrightrs);
    }

    public static IQueryable<TResult> FullOuterJoin<TLeft, TRight, TKey, TResult>(
        this IQueryable<TLeft> leftItems,
        IQueryable<TRight> rightItems,
        Expression<Func<TLeft, TKey>> leftKeySelector,
        Expression<Func<TRight, TKey>> rightKeySelector,
        Expression<Func<TLeft, TRight, TResult>> resultSelector) {

        return leftItems.LeftOuterJoin(rightItems, leftKeySelector, rightKeySelector, resultSelector).Concat(leftItems.RightAntiSemiJoin(rightItems, leftKeySelector, rightKeySelector, resultSelector));
    }
}

The difference between a Right Anti-Semi-Join is mostly moot with Linq to Objects or in the source, but makes a difference on the server (SQL) side in the final answer, removing an unnecessary JOIN.

The hand coding of Expression to handle merging an Expression<Func<>> into a lambda could be improved with LinqKit, but it would be nice if the language/compiler had added some help for that. The FullOuterJoinDistinct and RightOuterJoin functions are included for completeness, but I did not re-implement FullOuterGroupJoin yet.

I wrote another version of a full outer join for IEnumerable for cases where the key is orderable, which is about 50% faster than combining the left outer join with the right anti semi join, at least on small collections. It goes through each collection after sorting just once.

I also added another answer for a version that works with EF by replacing the Invoke with a custom expansion.

For convenience, a simple function wrapping the two methods from os.path :

def filename(path):
  """Return file name without extension from path.

  See https://docs.python.org/3/library/os.path.html
  """
  import os.path
  b = os.path.split(path)[1]  # path, *filename*
  f = os.path.splitext(b)[0]  # *file*, ext
  #print(path, b, f)
  return f

Tested with Python 3.5.

You can even pack Gui13's solution into single initialization statement:

struct address {
                 int street_no;
                 char *street_name;
                 char *city;
                 char *prov;
                 char *postal_code;
               };


address ta = (ta = address(), ta.city = "Hamilton", ta.prov = "Ontario", ta);

Disclaimer: I don't recommend this style

Follow the steps:

1. npm install --save-dev nodemon

2. Add the following two lines to "script" section of package.json:

"start": "node ./bin/www",
"devstart": "nodemon ./bin/www"

as shown below:

"scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "start": "node ./bin/www",
    "devstart": "nodemon ./bin/www"
}

3. npm run devstart

https://developer.mozilla.org/en-US/docs/Learn/Server-side/Express_Nodejs/skeleton_website

I use this approach for dialogs with MVVM.

All I have to do now is call the following from my view model.

var result = this.uiDialogService.ShowDialog("Dialogwindow title goes here", dialogwindowVM);

it means ONLY one byte will be allocated per character - so if you're using multi-byte charsets, your 1 character won't fit

if you know you have to have at least room enough for 1 character, don't use the BYTE syntax unless you know exactly how much room you'll need to store that byte

when in doubt, use VARCHAR2(1 CHAR)

same thing answered here Difference between BYTE and CHAR in column datatypes

Also, in 12c the max for varchar2 is now 32k, not 4000. If you need more than that, use CLOB

in Oracle, don't use VARCHAR

Accessing a single row

//Result as an Object
$result = $this->db->select('age')->from('my_users_table')->where('id', '3')->limit(1)->get()->row();
echo $result->age;

//Result as an Array
$result = $this->db->select('age')->from('my_users_table')->where('id', '3')->limit(1)->get()->row_array();
echo $result['age'];

<TextBox Controls:TextBoxHelper.Watermark="Watermark"/>

Add mahapps.metro to your project. Add textbox with the above code to the window.

header('Content-type: image/png') did not work with PHP 5.5 serving IE11, as in the image stream was shown as text

header('Content-Type: image/png') worked, as in the image appeared as an image

Only difference is the capital 'T'.

class Database{

        //variable to hold db connection
        private $db;
        //note we used static variable,beacuse an instance cannot be used to refer this
        public static $instance;

        //note constructor is private so that classcannot be instantiated
        private function __construct(){
          //code connect to database  

         }     

         //to prevent loop hole in PHP so that the class cannot be cloned
        private function __clone() {}

        //used static function so that, this can be called from other classes
        public static function getInstance(){

            if( !(self::$instance instanceof self) ){
                self::$instance = new self();           
            }
             return self::$instance;
        }


        public function query($sql){
            //code to run the query
        }

    }


Access the method getInstance using
$db = Singleton::getInstance();
$db->query();

The key to all of this is understanding map projections. As others have pointed out, the cause of the distortion is the fact that the spherical (or more accurately ellipsoidal) earth is projected onto a plane.

In order to achieve your goal, you first must know two things about your data:

1. The projection your maps are in. If they are purely derived from Google Maps, then chances are they are using a spherical Mercator projection.
2. The geographic coordinate system your latitude/longitude coordinates are using. This can vary, because there are different ways of locating lat/longs on the globe. The most common GCS, used in most web-mapping applications and for GPS's, is WGS84.

I'm assuming your data is in these coordinate systems.

The spherical Mercator projection defines a coordinate pair in meters, for the surface of the earth. This means, for every lat/long coordinate there is a matching meter/meter coordinate. This enables you to do the conversion using the following procedure:

1. Find the WGS84 lat/long of the corners of the image.
2. Convert the WGS lat/longs to the spherical Mercator projection. There conversion tools out there, my favorite is to use the cs2cs tool that is part of the PROJ4 project.
3. You can safely do a simple linear transform to convert between points on the image, and points on the earth in the spherical Mercator projection, and back again.

In order to go from a WGS84 point to a pixel on the image, the procedure is now:

1. Project lat/lon to spherical Mercator. This can be done using the proj4js library.
2. Transform spherical Mercator coordinate into image pixel coordinate using the linear relationship discovered above.

You can use the proj4js library like this:

// include the library
<script src="lib/proj4js-combined.js"></script>  //adjust the path for your server
                                                 //or else use the compressed version
// creating source and destination Proj4js objects
// once initialized, these may be re-used as often as needed
var source = new Proj4js.Proj('EPSG:4326');    //source coordinates will be in Longitude/Latitude, WGS84
var dest = new Proj4js.Proj('EPSG:3785');     //destination coordinates in meters, global spherical mercators projection, see http://spatialreference.org/ref/epsg/3785/


// transforming point coordinates
var p = new Proj4js.Point(-76.0,45.0);   //any object will do as long as it has 'x' and 'y' properties
Proj4js.transform(source, dest, p);      //do the transformation.  x and y are modified in place

//p.x and p.y are now EPSG:3785 in meters