This code works on all browsers and swallows the backspace key when not on a form element, or if the form element is disabled|readOnly. It is also efficient, which is important when it is executing on every key typed in.

$(function(){
    /*
     * this swallows backspace keys on any non-input element.
     * stops backspace -> back
     */
    var rx = /INPUT|SELECT|TEXTAREA/i;

    $(document).bind("keydown keypress", function(e){
        if( e.which == 8 ){ // 8 == backspace
            if(!rx.test(e.target.tagName) || e.target.disabled || e.target.readOnly ){
                e.preventDefault();
            }
        }
    });
});

Swift 3 (forget about NSURL).

let fileName = "20-01-2017 22:47"
let folderString = "file:///var/mobile/someLongPath"

To make a URL out of a string:

let folder: URL? = Foundation.URL(string: folderString)
// Optional<URL>
//  ? some : file:///var/mobile/someLongPath

If we want to add the filename. Note, that appendingPathComponent() adds the percent encoding automatically:

let folderWithFilename: URL? = folder?.appendingPathComponent(fileName)
// Optional<URL>
//  ? some : file:///var/mobile/someLongPath/20-01-2017%2022:47

When we want to have String but without the root part (pay attention that percent encoding is removed automatically):

let folderWithFilename: String? = folderWithFilename.path
// ? Optional<String>
//  - some : "/var/mobile/someLongPath/20-01-2017 22:47"

If we want to keep the root part we do this (but mind the percent encoding - it is not removed):

let folderWithFilenameAbsoluteString: String? = folderWithFilenameURL.absoluteString
// ? Optional<String>
//  - some : "file:///var/mobile/someLongPath/20-01-2017%2022:47"

To manually add the percent encoding for a string:

let folderWithFilenameAndEncoding: String? = folderWithFilename.addingPercentEncoding(withAllowedCharacters: CharacterSet.urlQueryAllowed)
// ? Optional<String>
//  - some : "/var/mobile/someLongPath/20-01-2017%2022:47"

To remove the percent encoding:

let folderWithFilenameAbsoluteStringNoEncodig: String? = folderWithFilenameAbsoluteString.removingPercentEncoding
// ? Optional<String>
//  - some : "file:///var/mobile/someLongPath/20-01-2017 22:47"

The percent-encoding is important because URLs for network requests need them, while URLs to file system won't always work - it depends on the actual method that uses them. The caveat here is that they may be removed or added automatically, so better debug these conversions carefully.

It can also be done with an IsoDateTimeConverter instance, without changing global formatting settings:

string json = JsonConvert.SerializeObject(yourObject,
    new IsoDateTimeConverter() { DateTimeFormat = "yyyy-MM-dd HH:mm:ss" });

This uses the JsonConvert.SerializeObject overload that takes a params JsonConverter[] argument.

explode does the job:

$parts = explode('.', $string);

You can also directly fetch parts of the result into variables:

list($part1, $part2) = explode('.', $string);

Try this:

setAttribute("hidden", true);

I have had this problem frequently with multiple concurrent goroutines.

It may or may not be a good pattern, but I define a a struct for my workers with a quit channel and field for the worker state:

type Worker struct {
    data chan struct
    quit chan bool
    stopped bool
}

Then you can have a controller call a stop function for the worker:

func (w *Worker) Stop() {
    w.quit <- true
    w.stopped = true
}

func (w *Worker) eventloop() {
    for {
        if w.Stopped {
            return
        }
        select {
            case d := <-w.data:
                //DO something
                if w.Stopped {
                    return
                }
            case <-w.quit:
                return
        }
    }
}

This gives you a pretty good way to get a clean stop on your workers without anything hanging or generating errors, which is especially good when running in a container.

There is a project called Drywall that implements a user login system with Passport and also has a user management admin panel. If you're looking for a fully-featured user authentication and management system similar to something like what Django has but for Node.js, this is it. I found it to be a really good starting point for building a node app that required a user authentication and management system. See Jared Hanson's answer for information on how Passport works.

For deep cloning (clones the entire object hierarchy):

• commons-lang SerializationUtils - using serialization - if all classes are in your control and you can force implementing Serializable.

• Java Deep Cloning Library - using reflection - in cases when the classes or the objects you want to clone are out of your control (a 3rd party library) and you can't make them implement Serializable, or in cases you don't want to implement Serializable.

For shallow cloning (clones only the first level properties):

• commons-beanutils BeanUtils - in most cases.

• Spring BeanUtils - if you are already using spring and hence have this utility on the classpath.

I deliberately omitted the "do-it-yourself" option - the API's above provide a good control over what to and what not to clone (for example using transient, or String[] ignoreProperties), so reinventing the wheel isn't preferred.

Indeed there is an API to search google programmatically. The API is called google custom search. For using this API, you will need an Google Developer API key and a cx key. A simple procedure for accessing google search from java program is explained in my blog.

Now dead, here is the Wayback Machine link.

Your expression is never going to evaluate.

You are comparing a with a property of a.

a is of type Answer. a.Correct, I'm guessing is a boolean.

Long form:-

Answer = answer.SingleOrDefault(a => a.Correct == true);

Short form:-

Answer = answer.SingleOrDefault(a => a.Correct);

Had one of these as well, but the parameter of the action was an interface with no public properties. Ended up using It.Is() with a seperate method and within this method had to do some mocking of the interface

public interface IQuery
{
    IQuery SetSomeFields(string info);
}

void DoSomeQuerying(Action<IQuery> queryThing);

mockedObject.Setup(m => m.DoSomeQuerying(It.Is<Action<IQuery>>(q => MyCheckingMethod(q)));

private bool MyCheckingMethod(Action<IQuery> queryAction)
{
    var mockQuery = new Mock<IQuery>();
    mockQuery.Setup(m => m.SetSomeFields(It.Is<string>(s => s.MeetsSomeCondition())
    queryAction.Invoke(mockQuery.Object);
    mockQuery.Verify(m => m.SetSomeFields(It.Is<string>(s => s.MeetsSomeCondition(), Times.Once)
    return true
}

No, it is not possible to seed Math.random(), but it's fairly easy to write your own generator, or better yet, use an existing one.

Check out: this related question.

Also, see David Bau's blog for more information on seeding.

As string data types have variable length, it is by default stored as object type. I faced this problem after treating missing values too. Converting all those columns to type 'category' before label encoding worked in my case.

df[cat]=df[cat].astype('category')

And then check df.dtypes and perform label encoding.

Neither of them worked for me for some reason.

I figured it out that for some reason python doesn't read %s. So use (?) instead of %S in you SQL Code.

And finally this worked for me.

   cursor.execute ("update tablename set columnName = (?) where ID = (?) ",("test4","4"))
   connect.commit()

If you have both versions of PHP installed, you can switch between versions using the link and unlink brew commands.

For example, to switch between PHP 7.4 and PHP 7.3

brew unlink [email protected]
brew link [email protected]

PS: both versions of PHP have be installed for these commands to work.

You can use Len(StrFile) > 0 in loop check statement !

Sub openMyfile()

    Dim Source As String
    Dim StrFile As String

    'do not forget last backslash in source directory.
    Source = "E:\Planning\03\"
    StrFile = Dir(Source)

    Do While Len(StrFile) > 0                        
        Workbooks.Open Filename:=Source & StrFile
        StrFile = Dir()
    Loop
End Sub

A bit more along the same lines

attrs <- {}

attrs.a <- 1

f <- function(d) {
    attrs.a <- d
}

f(20)
print(attrs.a)

will print "1"

attrs <- {}

attrs.a <- 1

f <- function(d) {
   attrs.a <<- d
}

f(20)
print(attrs.a)

Will print "20"

It is a broken/very hard to use replacement for the "center" tag. It comes in handy when you need broken tables and non-working centering for blocks and text.

See my code which may help you. models.py

from django.db import models

class Customer(models.Model):
    name = models.CharField(max_length=100)
    email = models.EmailField(max_length=100)
    password = models.CharField(max_length=100)
    instrument_purchase = models.CharField(max_length=100)
    house_no = models.CharField(max_length=100)
    address_line1 = models.CharField(max_length=100)
    address_line2 = models.CharField(max_length=100)
    telephone = models.CharField(max_length=100)
    zip_code = models.CharField(max_length=20)
    state = models.CharField(max_length=100)
    country = models.CharField(max_length=100)

    def __str__(self):
        return self.name

forms.py

from django import forms
from models import *

class CustomerForm(forms.ModelForm):
    password = forms.CharField(widget=forms.PasswordInput)

    class Meta:
        model = Customer
        fields = ('name', 'email', 'password', 'instrument_purchase', 'house_no', 'address_line1', 'address_line2', 'telephone', 'zip_code', 'state', 'country')

I found this blog post which explains the problem very well, and defines a few different solutions:

(dead link removed)

I've settled for the idea that the best way to do it is to completely omit the XML declaration when in memory. It actually is UTF-16 at that point anyway, but the XML declaration doesn't seem meaningful until it has been written to a file with a particular encoding; and even then the declaration is not required. It doesn't seem to break deserialization, at least.

As @Jon Hanna mentions, this can be done with an XmlWriter created like this:

XmlWriter writer = XmlWriter.Create (output, new XmlWriterSettings() { OmitXmlDeclaration = true });

Here, as the Text widget does not have a property that allows us to define a border, we should wrap it with a widget that allows us to define a border. There are several solutions.
But the best solution is the use of BoxDecoration in the Container widget.

Why choose to use BoxDecoration ?
Because BoxDecoration offers more customization like the possibility to define :
First, the border and also define:

• border Color
• border width
• border radius
• shape
• and more ...

An example :

   Container(
     child:Text(' Hello Word '),
     decoration: BoxDecoration(
          color: Colors.yellow,
          border: Border.all(
                color: Colors.red ,
                width: 2.0 ,
              ),
          borderRadius: BorderRadius.circular(15),
            ),
          ),

Output :

this looks like PHP to me. I'll delete if it's some other language.

Simply unset($arr[1]);

According to my test,

1. implements OnItemClickListener -> works.

2. setOnItemClickListener -> works.

3. ListView is clickable by default (API 19)

The important thing is, "click" only works to TextView (if you choose simple_list_item_1.xml as item). That means if you provide text data for the ListView, "click" works when you click on text area. Click on empty area does not trigger "click event".

var column1RelArray = [];
$('#column1 li').each(function(){
    column1RelArray.push($(this).attr('rel'));
});

or fp style

var column1RelArray = $('#column1 li').map(function(){ 
    return $(this).attr('rel'); 
});

Based on the suggestion of using the PushbackInputStream, you'll find an exemple implementation here:

/**
 * @author Lorber Sebastien <i>([email protected])</i>
 */
public class NonEmptyInputStream extends FilterInputStream {

  /**
   * Once this stream has been created, do not consume the original InputStream 
   * because there will be one missing byte...
   * @param originalInputStream
   * @throws IOException
   * @throws EmptyInputStreamException
   */
  public NonEmptyInputStream(InputStream originalInputStream) throws IOException, EmptyInputStreamException {
    super( checkStreamIsNotEmpty(originalInputStream) );
  }


  /**
   * Permits to check the InputStream is empty or not
   * Please note that only the returned InputStream must be consummed.
   *
   * see:
   * http://stackoverflow.com/questions/1524299/how-can-i-check-if-an-inputstream-is-empty-without-reading-from-it
   *
   * @param inputStream
   * @return
   */
  private static InputStream checkStreamIsNotEmpty(InputStream inputStream) throws IOException, EmptyInputStreamException {
    Preconditions.checkArgument(inputStream != null,"The InputStream is mandatory");
    PushbackInputStream pushbackInputStream = new PushbackInputStream(inputStream);
    int b;
    b = pushbackInputStream.read();
    if ( b == -1 ) {
      throw new EmptyInputStreamException("No byte can be read from stream " + inputStream);
    }
    pushbackInputStream.unread(b);
    return pushbackInputStream;
  }

  public static class EmptyInputStreamException extends RuntimeException {
    public EmptyInputStreamException(String message) {
      super(message);
    }
  }

}

And here are some passing tests:

  @Test(expected = EmptyInputStreamException.class)
  public void test_check_empty_input_stream_raises_exception_for_empty_stream() throws IOException {
    InputStream emptyStream = new ByteArrayInputStream(new byte[0]);
    new NonEmptyInputStream(emptyStream);
  }

  @Test
  public void test_check_empty_input_stream_ok_for_non_empty_stream_and_returned_stream_can_be_consummed_fully() throws IOException {
    String streamContent = "HELLooooô wörld";
    InputStream inputStream = IOUtils.toInputStream(streamContent, StandardCharsets.UTF_8);
    inputStream = new NonEmptyInputStream(inputStream);
    assertThat(IOUtils.toString(inputStream,StandardCharsets.UTF_8)).isEqualTo(streamContent);
  }

Try this,

this.props.router.push('/foo')

warning works for versions prior to v4

and

this.props.history.push('/foo')

for v4 and above

May 2017; I had the same issue, could not even get to apps as it just cycled between starting and stopping. Went into avd settings, edited the multi core (unticked the box) and set graphics to software Gles. It appears to have fixed the issue

Install iOS Simulator if you're missing one.

to_skip = ("bad", "naughty")
out_handle = open("testout", "w")

with open("testin", "r") as handle:
    for line in handle:
        if set(line.split(" ")).intersection(to_skip):
            continue
        out_handle.write(line)
out_handle.close()

This one worked for me:

Searching for all *php file in the current directory , and replace the first character of each filename to capital letter:

e.g: test.php => Test.php

for f in *php ; do mv "$f" "$(\sed 's/.*/\u&/' <<< "$f")" ; done

I ran into the same issue. Daniel Nugent's answer helped a bit (after following his advice HttpResponse was found - but the HttpClient was still missing).

So here is what fixed it for me:

1. (if not already done, commend previous import-statements out)
2. visit http://hc.apache.org/downloads.cgi
3. get the 4.5.1.zip from the binary section
4. unzip it and paste httpcore-4.4.3 & httpclient-4.5.1.jar in project/libs folder
5. right-click the jar and choose Add as library.

Hope it helps.

I bumped into this problem lately with Windows 10 from another direction, and found the answer from @JonSkeet very helpful in solving my problem.

I also did som further research with a test form and found that when the the current culture was set to "no" or "nb-NO" at runtime (Thread.CurrentThread.CurrentCulture = new CultureInfo("no");), the ToString("yyyy-MM-dd HH:mm:ss") call responded differently in Windows 7 and Windows 10. It returned what I expected in Windows 7 and HH.mm.ss in Windows 10!

I think this is a bit scary! Since I believed that a culture was a culture in any Windows version at least.

I hide the warnings in the pink boxes by running the following code in a cell:

from IPython.display import HTML
HTML('''<script>
code_show_err=false; 
function code_toggle_err() {
 if (code_show_err){
 $('div.output_stderr').hide();
 } else {
 $('div.output_stderr').show();
 }
 code_show_err = !code_show_err
} 
$( document ).ready(code_toggle_err);
</script>
To toggle on/off output_stderr, click <a href="javascript:code_toggle_err()">here</a>.''')

This is your html-

    <img id="imageid" src="">
    <canvas id="imgCanvas" />

Javascript should be-

   var can = document.getElementById("imgCanvas");
   var img = document.getElementById("imageid");
   var ctx = can.getContext("2d");
   ctx.drawImage(img, 10, 10);
   var encodedBase = can.toDataURL();

'encodedBase' Contains Base64 Encoding of Image.

You can use ServiceLocatorFactoryBean. First you need to create an interface for your class

public interface YourClassFactory {
    YourClass getClassByName(String name);
}

Then you have to create a config file for ServiceLocatorBean

@Configuration
@Component
public class ServiceLocatorFactoryBeanConfig {

    @Bean
    public ServiceLocatorFactoryBean serviceLocatorBean(){
        ServiceLocatorFactoryBean bean = new ServiceLocatorFactoryBean();
        bean.setServiceLocatorInterface(YourClassFactory.class);
        return bean;
    }
}

Now you can find your class by name like that

@Autowired
private YourClassfactory factory;

YourClass getYourClass(String name){
    return factory.getClassByName(name);
}

If you want to split you dataframe into two different ones, do two selects on it with the different columns you want.

 val sourceDf = spark.read.csv(...)
 val df1 = sourceDF.select("first column", "second column", "third column")
 val df2 = sourceDF.select("first column", "second column", "third column")

Note that this of course means that the sourceDf would be evaluated twice, so if it can fit into distributed memory and you use most of the columns across both dataframes it might be a good idea to cache it. It it has many extra columns that you don't need, then you can do a select on it first to select on the columns you will need so it would store all that extra data in memory.

Habib is right -- because string is a reference type.

But more importantly, you don't have to check for null each time you use it. You probably should throw a ArgumentNullException if someone passes your function a null reference, though.

Here's the thing -- the framework would throw a NullReferenceException for you anyway if you tried to call .ToUpper() on a string. Remember that this case still can happen even if you test your arguments for null since any property or method on the objects passed to your function as parameters may evaluate to null.

That being said, checking for empty strings or nulls is a common thing to do, so they provide String.IsNullOrEmpty() and String.IsNullOrWhiteSpace() for just this purpose.

The problem is that you're targeting the button, but it's the A Tag that causes the text-decoration: underline. So if you target the A tag then it should work.

a:hover, a:focus { text-decoration: none;}

You can use for in range with a step size of 2:

Python 2

for i in xrange(0,10,2):
  print(i)

Python 3

for i in range(0,10,2):
  print(i)

Note: Use xrange in Python 2 instead of range because it is more efficient as it generates an iterable object, and not the whole list.

Updating Angular CLI

https://github.com/angular/angular-cli#updating-angular-cli

If you're using Angular CLI 1.0.0-beta.28 or less, you need to uninstall angular-cli package first.

npm uninstall -g angular-cli
npm uninstall -g @angular/cli
npm cache clean
npm install -g @angular/cli@latest

Then when it gets done successfully you may try:

ng --version

The solution I used was to create a javascript function that uses jquery:

This will populate a dropdown object on the HTML page. Please let me know where this can be optimized - but works fine as is.

function util_PopulateDropDownListAndSelect(sourceListObject, sourceListTextFieldName, targetDropDownName, valueToSelect)
{
    var options = '';

    // Create the list of HTML Options
    for (i = 0; i < sourceListObject.List.length; i++)
    {
        options += "<option value='" + sourceListObject.List[i][sourceListTextFieldName] + "'>" + sourceListObject.List[i][sourceListTextFieldName] + "</option>\r\n";
    }

    // Assign the options to the HTML Select container
    $('select#' + targetDropDownName)[0].innerHTML = options;

    // Set the option to be Selected
    $('#' + targetDropDownName).val(valueToSelect);

    // Refresh the HTML Select so it displays the Selected option
    $('#' + targetDropDownName).selectmenu('refresh')
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

Paste following link to directly under link button click event, otherwise use javascript to call code behind function

Protected Sub lnkOpen_Click(ByVal sender As Object, ByVal e As EventArgs) 
    System.Diagnostics.Process.Start(FilePath)
End Sub

Assuming the column is set to support NULL as a value:

UPDATE YOUR_TABLE
   SET column = NULL

Be aware of the database NULL handling - by default in SQL Server, NULL is an INT. So if the column is a different data type you need to CAST/CONVERT NULL to the proper data type:

UPDATE YOUR_TABLE
   SET column = CAST(NULL AS DATETIME)

...assuming column is a DATETIME data type in the example above.

I'm not sure why you're avoiding the AND clause. It is the simplest solution.

Otherwise, you would need to do an INTERSECT of multiple queries:

SELECT word FROM table WHERE word NOT LIKE '%a%'
INTERSECT
SELECT word FROM table WHERE word NOT LIKE '%b%'
INTERSECT
SELECT word FROM table WHERE word NOT LIKE '%c%';

Alternatively, you can use a regular expression if your version of SQL supports it.

To remove the last character do as Mark Byers said

s = s.substring(0, s.length() - 1);

Additionally, another way to remove the characters you don't want would be to use the .replace(oldCharacter, newCharacter) method.

as in:

s = s.replace(",","");

and

s = s.replace(".","");

All of these are kinds of indices.

primary: must be unique, is an index, is (likely) the physical index, can be only one per table.

unique: as it says. You can't have more than one row with a tuple of this value. Note that since a unique key can be over more than one column, this doesn't necessarily mean that each individual column in the index is unique, but that each combination of values across these columns is unique.

index: if it's not primary or unique, it doesn't constrain values inserted into the table, but it does allow them to be looked up more efficiently.

fulltext: a more specialized form of indexing that allows full text search. Think of it as (essentially) creating an "index" for each "word" in the specified column.

1.7976931348623157 × 10^308

http://en.wikipedia.org/wiki/Double_precision_floating-point_format

To mark as obsolete with a warning:

[Obsolete]
private static void SomeMethod()

You get a warning when you use it:

And with IntelliSense:

If you want a message:

[Obsolete("My message")]
private static void SomeMethod()

Here's the IntelliSense tool tip:

Finally if you want the usage to be flagged as an error:

[Obsolete("My message", true)]
private static void SomeMethod()

When used this is what you get:

Note: Use the message to tell people what they should use instead, not why it is obsolete.

You say that the matrices are the same dimensions, and yet you are trying to perform matrix multiplication on them. Multiplication of matrices with the same dimension is only possible if they are square. In your case, you get an assertion error, because the dimensions are not square. You have to be careful when multiplying matrices, as there are two possible meanings of multiply.

Matrix multiplication is where two matrices are multiplied directly. This operation multiplies matrix A of size [a x b] with matrix B of size [b x c] to produce matrix C of size [a x c]. In OpenCV it is achieved using the simple * operator:

C = A * B

Element-wise multiplication is where each pixel in the output matrix is formed by multiplying that pixel in matrix A by its corresponding entry in matrix B. The input matrices should be the same size, and the output will be the same size as well. This is achieved using the mul() function:

output = A.mul(B);

If you are only trying to change the include paths for a project and not for all solutions then in Visual Studio 2008 do this: Right-click on the name of the project in the Solution Navigator. From the popup menu select Properties. In the property pages dialog select Configuration Properties->C/C++/General. Click in the text box next to the "Additional Include Files" label and browse for the appropriate directory. Select OK.

What annoys me is that some of the answers to the original question asked do not apply to the version of Visual Studio that was mentioned.

you must stop another running app involved with especial database table ... like running java API in other module or other project is not terminated .. so terminate running.

Or for multiple ignores on the next line, string the rules using commas

// eslint-disable-next-line class-methods-use-this, no-unused-vars

If you want to run your scripts, then

mysql -u root -p < yourscript.sql

Be aware that if you call an update on an detached object, there will always be an update done in the database whether you changed the object or not. If it is not what you want you should use Session.lock() with LockMode.None.

You should call update only if the object was changed outside the scope of your current session (when in detached mode).

The easiest way to do this is :

ALTER TABLE db.TABLENAME ADD COLUMN [datatype] NOT NULL DEFAULT 'value'

Ex : Adding a column x (bit datatype) to a table ABC with default value 0

ALTER TABLE db.ABC ADD COLUMN x bit NOT NULL DEFAULT 0

PS : I am not a big fan of using the table designer for this. Its so much easier being conventional / old fashioned sometimes. :). Hope this helps answer

TL;DR

SELECT json_agg(t) FROM t

for a JSON array of objects, and

SELECT
    json_build_object(
        'a', json_agg(t.a),
        'b', json_agg(t.b)
    )
FROM t

for a JSON object of arrays.

List of objects

This section describes how to generate a JSON array of objects, with each row being converted to a single object. The result looks like this:

[{"a":1,"b":"value1"},{"a":2,"b":"value2"},{"a":3,"b":"value3"}]

9.3 and up

The json_agg function produces this result out of the box. It automatically figures out how to convert its input into JSON and aggregates it into an array.

SELECT json_agg(t) FROM t

There is no jsonb (introduced in 9.4) version of json_agg. You can either aggregate the rows into an array and then convert them:

SELECT to_jsonb(array_agg(t)) FROM t

or combine json_agg with a cast:

SELECT json_agg(t)::jsonb FROM t

My testing suggests that aggregating them into an array first is a little faster. I suspect that this is because the cast has to parse the entire JSON result.

9.2

9.2 does not have the json_agg or to_json functions, so you need to use the older array_to_json:

SELECT array_to_json(array_agg(t)) FROM t

You can optionally include a row_to_json call in the query:

SELECT array_to_json(array_agg(row_to_json(t))) FROM t

This converts each row to a JSON object, aggregates the JSON objects as an array, and then converts the array to a JSON array.

I wasn't able to discern any significant performance difference between the two.

Object of lists

This section describes how to generate a JSON object, with each key being a column in the table and each value being an array of the values of the column. It's the result that looks like this:

{"a":[1,2,3], "b":["value1","value2","value3"]}

9.5 and up

We can leverage the json_build_object function:

SELECT
    json_build_object(
        'a', json_agg(t.a),
        'b', json_agg(t.b)
    )
FROM t

You can also aggregate the columns, creating a single row, and then convert that into an object:

SELECT to_json(r)
FROM (
    SELECT
        json_agg(t.a) AS a,
        json_agg(t.b) AS b
    FROM t
) r

Note that aliasing the arrays is absolutely required to ensure that the object has the desired names.

Which one is clearer is a matter of opinion. If using the json_build_object function, I highly recommend putting one key/value pair on a line to improve readability.

You could also use array_agg in place of json_agg, but my testing indicates that json_agg is slightly faster.

There is no jsonb version of the json_build_object function. You can aggregate into a single row and convert:

SELECT to_jsonb(r)
FROM (
    SELECT
        array_agg(t.a) AS a,
        array_agg(t.b) AS b
    FROM t
) r

Unlike the other queries for this kind of result, array_agg seems to be a little faster when using to_jsonb. I suspect this is due to overhead parsing and validating the JSON result of json_agg.

Or you can use an explicit cast:

SELECT
    json_build_object(
        'a', json_agg(t.a),
        'b', json_agg(t.b)
    )::jsonb
FROM t

The to_jsonb version allows you to avoid the cast and is faster, according to my testing; again, I suspect this is due to overhead of parsing and validating the result.

9.4 and 9.3

The json_build_object function was new to 9.5, so you have to aggregate and convert to an object in previous versions:

SELECT to_json(r)
FROM (
    SELECT
        json_agg(t.a) AS a,
        json_agg(t.b) AS b
    FROM t
) r

or

SELECT to_jsonb(r)
FROM (
    SELECT
        array_agg(t.a) AS a,
        array_agg(t.b) AS b
    FROM t
) r

depending on whether you want json or jsonb.

(9.3 does not have jsonb.)

9.2

In 9.2, not even to_json exists. You must use row_to_json:

SELECT row_to_json(r)
FROM (
    SELECT
        array_agg(t.a) AS a,
        array_agg(t.b) AS b
    FROM t
) r

Documentation

Find the documentation for the JSON functions in JSON functions.

json_agg is on the aggregate functions page.

Design

If performance is important, ensure you benchmark your queries against your own schema and data, rather than trust my testing.

Whether it's a good design or not really depends on your specific application. In terms of maintainability, I don't see any particular problem. It simplifies your app code and means there's less to maintain in that portion of the app. If PG can give you exactly the result you need out of the box, the only reason I can think of to not use it would be performance considerations. Don't reinvent the wheel and all.

Nulls

Aggregate functions typically give back NULL when they operate over zero rows. If this is a possibility, you might want to use COALESCE to avoid them. A couple of examples:

SELECT COALESCE(json_agg(t), '[]'::json) FROM t

Or

SELECT to_jsonb(COALESCE(array_agg(t), ARRAY[]::t[])) FROM t

_{Credit to Hannes Landeholm for pointing this out}

A good way is to define a string your self.

#include <stdio.h>
typedef char string[]
int main() {
    string test = "string";
    return 0;
}

It's really that simple.

If the path you want is the one to the workbook running the macro, and that workbook has been saved, then

ThisWorkbook.Path

is what you would use.

I've gotten around this with

mystr = ' '.join(
        ["Why, hello there",
         "wonderful stackoverflow people!"])

in the past. It's not perfect, but it works nicely for very long strings that need to not have line breaks in them.

SOLUTION ONE

$this->db->where('id', '3');
// here we select every column of the table
$q = $this->db->get('my_users_table');
$data = $q->result_array();

echo($data[0]['age']);

SOLUTION TWO

// here we select just the age column
$this->db->select('age');
$this->db->where('id', '3');
$q = $this->db->get('my_users_table');
$data = $q->result_array();

echo($data[0]['age']);

SOLUTION THREE

$this->db->select('age');
$this->db->where('id', '3');
$q = $this->db->get('my_users_table');
// if id is unique, we want to return just one row
$data = array_shift($q->result_array());

echo($data['age']);

SOLUTION FOUR (NO ACTIVE RECORD)

$q = $this->db->query('SELECT age FROM my_users_table WHERE id = ?',array(3));
$data = array_shift($q->result_array());
echo($data['age']);

Look at java.lang.BigDecimal, may solve your problem.

http://docs.oracle.com/javase/7/docs/api/java/math/BigDecimal.html

LIMIT limit OFFSET offset will work.

But you need a stable ORDER BY clause, or the values may be ordered differently for the next call (after any write on the table for instance).

SELECT *
FROM   msgtable
WHERE  cdate = '2012-07-18'
ORDER  BY msgtable_id  -- or whatever is stable 
LIMIT  10
OFFSET 50;  -- to skip to page 6

Use standard-conforming date style (ISO 8601 in my example), which works irregardless of your locale settings.

Paging will still shift if involved rows are inserted or deleted or changed in relevant columns. It has to.

To avoid that shift or for better performance with big tables use smarter paging strategies:

• Optimize query with OFFSET on large table

You can also use the

DecimalFormat df = new DecimalFormat("#.00000");
df.format(0.912385);

to make sure you have the trailing 0's.

Here is a modified version (from compman2408's one) which worked for me:

    internal static string GetLocalIPv4(NetworkInterfaceType _type)
    {  // Checks your IP adress from the local network connected to a gateway. This to avoid issues with double network cards
        string output = "";  // default output
        foreach (NetworkInterface item in NetworkInterface.GetAllNetworkInterfaces()) // Iterate over each network interface
        {  // Find the network interface which has been provided in the arguments, break the loop if found
            if (item.NetworkInterfaceType == _type && item.OperationalStatus == OperationalStatus.Up)
            {   // Fetch the properties of this adapter
                IPInterfaceProperties adapterProperties = item.GetIPProperties();
                // Check if the gateway adress exist, if not its most likley a virtual network or smth
                if (adapterProperties.GatewayAddresses.FirstOrDefault() != null)
                {   // Iterate over each available unicast adresses
                    foreach (UnicastIPAddressInformation ip in adapterProperties.UnicastAddresses)
                    {   // If the IP is a local IPv4 adress
                        if (ip.Address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
                        {   // we got a match!
                            output = ip.Address.ToString();
                            break;  // break the loop!!
                        }
                    }
                }
            }
            // Check if we got a result if so break this method
            if (output != "") { break; }
        }
        // Return results
        return output;
    }

You can call this method for example like:

GetLocalIPv4(NetworkInterfaceType.Ethernet);

The change: I'm retrieving the IP from an adapter which has a gateway IP assigned to it. Second change: I've added docstrings and break statement to make this method more efficient.

If you want to add a modal and a tooltip without adding javascript or altering the tooltip function, you could also simply wrap an element around it:

<span data-toggle="modal" data-target="modal">
    <a data-toggle="tooltip" data-placement="top" title="Tooltip">
      Hover Me           
    </a>
</span>

The accepted answer works, but if:

• you don't know the content's dimensions
• the content is dynamic
• you want to be future proof

use this:

.centered {
  position: fixed; /* or absolute */
  top: 50%;
  left: 50%;
  /* bring your own prefixes */
  transform: translate(-50%, -50%);
}

More information about centering content in this excellent CSS-Tricks article.

.center{
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

Another great guide about flexboxs from CSS Tricks; http://css-tricks.com/snippets/css/a-guide-to-flexbox/

Solution for pulling Map using @Value from application.yml property coded as multiline

application.yml

other-prop: just for demo 

my-map-property-name: "{\
         key1: \"ANY String Value here\", \  
         key2: \"any number of items\" , \ 
         key3: \"Note the Last item does not have comma\" \
         }"

other-prop2: just for demo 2 

Here the value for our map property "my-map-property-name" is stored in JSON format inside a string and we have achived multiline using \ at end of line

myJavaClass.java

import org.springframework.beans.factory.annotation.Value;

public class myJavaClass {

@Value("#{${my-map-property-name}}") 
private Map<String,String> myMap;

public void someRandomMethod (){
    if(myMap.containsKey("key1")) {
            //todo...
    } }

}

More explanation

• \ in yaml it is Used to break string into multiline

• \" is escape charater for "(quote) in yaml string

• {key:value} JSON in yaml which will be converted to Map by @Value

• #{ } it is SpEL expresion and can be used in @Value to convert json int Map or Array / list Reference

Tested in a spring boot project

PHP code example for matching subdomains.

if( preg_match("/http:\/\/(.*?)\.yourdomain.example/", $_SERVER['HTTP_ORIGIN'], $matches )) {
        $theMatch = $matches[0];
        header('Access-Control-Allow-Origin: ' . $theMatch);
}

Perm space is used to keep informations for loaded classes and few other advanced features like String Pool(for highly optimized string equality testing), which usually get created by String.intern() methods. As your application(number of classes) will grow this space shall get filled quickly, since the garbage collection on this Space is not much effective to clean up as required, you quickly get Out of Memory : perm gen space error. After then, no application shall run on that machine effectively even after having a huge empty JVM.

Before starting your application you should java -XX:MaxPermSize to get rid of this error.

Someone here has just suggested sudoing tee:

sudo ls -hal /root/ | sudo tee /root/test.out > /dev/null

This could also be used to redirect any command, to a directory that you do not have access to. It works because the tee program is effectively an "echo to a file" program, and the redirect to /dev/null is to stop it also outputting to the screen to keep it the same as the original contrived example above.

It depends on the specific architecture. Some application servers may use web protocols natively (XML/RPC/SOAP over HTTP), so there is little technical difference. Typically a web server is user-facing, serving a variety of content over HTTP/HTTPS, while an application server is not user-facing and may use non-standard or non-routable protocols. Of course with RIA/AJAX, the difference could be further clouded, serving only non-HTML content (JSON/XML) to clients pumping particular remote access services.

Or you can try the same but without listeners. On your button XML definition:

android:onClick="ButtonOnClick"

And in your code define the method ButtonOnClick:

public void ButtonOnClick(View v) {
    switch (v.getId()) {
      case R.id.button1:
        doSomething1();
        break;
      case R.id.button2:
        doSomething2();
        break;
      }
}

We can increase maximum upload file size for WordPress media uploads in 3 different ways.

That's are

1. .htaccess way
2. PHP.INI file method
3. Theme’s Functions.php File

For .htaccess way, add following code,

php_value upload_max_filesize 1024M
php_value post_max_size 1024M
php_value max_execution_time 1000
php_value max_input_time 1000

for PHP.INI file method, add following code,

upload_max_filesize = 1024M
post_max_size = 1024M
max_execution_time = 1000

for Theme’s Functions.php File, add following code,

@ini_set( ‘upload_max_size’ , ’1024M’ );
@ini_set( ‘post_max_size’, ’1024M’);
@ini_set( ‘max_execution_time’, ’1000' );

For More Details->>>

I've recently started doing something like this:

public class Main {
    @FunctionalInterface
    public interface NotDotNetDelegate {
        int doSomething(int a, int b);
    }

    public static void main(String[] args) {
        // in java 8 (lambdas):
        System.out.println(functionThatTakesDelegate((a, b) -> {return a*b;} , 10, 20));

    }

    public static int functionThatTakesDelegate(NotDotNetDelegate del, int a, int b) {
        // ...
        return del.doSomething(a, b);
    }
}

I had a similar problem, and it turned out that the simple solution was to have my configuration class extend WebMvcAutoConfiguration:

@Configuration
@EnableWebMvc
@ComponentScan
public class ServerConfiguration extends WebMvcAutoConfiguration{
}

I didn't need any other code to allow my static content to be served, however, I did put a directory called public under src/main/webapp and configured maven to point to src/main/webapp as a resource directory. This means that public is copied into target/classes, and is therefore on the classpath at runtime for spring-boot/tomcat to find.

The unglue package provides an alternative, no knowledge about regular expressions is required for simple cases, here we'd do :

# install.packages("unglue")
library(unglue)
string = c("G1:E001", "G2:E002", "G3:E003")
unglue_vec(string,"{x}:{y}", var = "y")
#> [1] "E001" "E002" "E003"

^{Created on 2019-11-06 by the reprex package (v0.3.0)}

More info : https://github.com/moodymudskipper/unglue/blob/master/README.md

The definitive solution is to allow the InfoTech protocol to work in the intranet zone.

Add the following value to the registry and the problem should be solved:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp\1.x\ItssRestrictions]
"MaxAllowedZone"=dword:00000001

More info here: http://support.microsoft.com/kb/896054

Code posted by you is correct and should have worked. But check exactly what you have in the char*. If the correct value is to big to be represented, functions will return a positive or negative HUGE_VAL. Check what you have in the char* against maximum values that float and double can represent on your computer.

Check this page for strtod reference and this page for atof reference.

I have tried the example you provided in both Windows and Linux and it worked fine.

@gerrit_hoekstra wrote: "However, the value of an auto-increment field is only available to an "AFTER-INSERT" trigger - it defaults to 0 in the BEFORE-case."

That is correct but you can select the auto-increment field value that will be inserted by the subsequent INSERT quite easily. This is an example that works:

CREATE DEFINER = CURRENT_USER TRIGGER `lgffin`.`variable_BEFORE_INSERT` BEFORE INSERT 
ON `variable` FOR EACH ROW
BEGIN
    SET NEW.prefixed_id = CONCAT(NEW.fixed_variable, (SELECT `AUTO_INCREMENT`
                                                FROM  INFORMATION_SCHEMA.TABLES
                                                WHERE TABLE_SCHEMA = 'lgffin'
                                                AND   TABLE_NAME   = 'variable'));      
END

If I get your question correctly, you could do something like this.

>>> import matplotlib.pyplot as plt
>>> testList =[(0, 6.0705199999997801e-08), (1, 2.1015700100300739e-08), 
 (2, 7.6280656623374823e-09), (3, 5.7348209304555086e-09), 
 (4, 3.6812203579604238e-09), (5, 4.1572516753310418e-09)]
>>> from math import log
>>> testList2 = [(elem1, log(elem2)) for elem1, elem2 in testList]
>>> testList2
[(0, -16.617236475334405), (1, -17.67799605473062), (2, -18.691431541177973), (3, -18.9767093108359), (4, -19.420021520728017), (5, -19.298411635970396)]
>>> zip(*testList2)
[(0, 1, 2, 3, 4, 5), (-16.617236475334405, -17.67799605473062, -18.691431541177973, -18.9767093108359, -19.420021520728017, -19.298411635970396)]
>>> plt.scatter(*zip(*testList2))
>>> plt.show()

which would give you something like

Or as a line plot,

>>> plt.plot(*zip(*testList2))
>>> plt.show()

EDIT - If you want to add a title and labels for the axis, you could do something like

>>> plt.scatter(*zip(*testList2))
>>> plt.title('Random Figure')
>>> plt.xlabel('X-Axis')
>>> plt.ylabel('Y-Axis')
>>> plt.show()

which would give you

You will need two function

function desc(a, b) {
 return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
}

function asc(a, b) {
  return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
}

Then you can apply this to any object property:

 data.sort((a, b) => desc(parseFloat(a.price), parseFloat(b.price)));

let data = [_x000D_
    {label: "one", value:10},_x000D_
    {label: "two", value:5},_x000D_
    {label: "three", value:1},_x000D_
];_x000D_
_x000D_
// sort functions_x000D_
function desc(a, b) {_x000D_
 return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;_x000D_
}_x000D_
_x000D_
function asc(a, b) {_x000D_
 return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;_x000D_
}_x000D_
_x000D_
// DESC_x000D_
data.sort((a, b) => desc(a.value, b.value));_x000D_
_x000D_
document.body.insertAdjacentHTML(_x000D_
 'beforeend', _x000D_
 '<strong>DESCending sorted</strong><pre>' + JSON.stringify(data) +'</pre>'_x000D_
);_x000D_
_x000D_
// ASC_x000D_
data.sort((a, b) => asc(a.value, b.value));_x000D_
_x000D_
document.body.insertAdjacentHTML(_x000D_
 'beforeend', _x000D_
 '<strong>ASCending sorted</strong><pre>' + JSON.stringify(data) +'</pre>'_x000D_
);

Make sure you properly escape the quotes.

  string line = "\"Text\",\"Text\",\"Text\",";

  string result = line.Replace("\",\"", ";");

Operating system commands have exit codes. Look for Linux exit codes to see some material on this. The shell uses the exit codes to decide if the program worked, had problems, or failed. There are some efforts to create standard (or at least commonly-used) exit codes. See this Advanced Shell Script posting.

Sorry, I don't know how to use LaTeX syntax on stackoverflow..

For starters:

<p align='center'>
<table width='100%'>
<tr>
<td align='center'><form><input type=submit value="click me" style="width:100%"></form></td>
</tr>
</table>
</p>

Note, if the width of the input button is 100%, you wont need the attribute "align='center'" anymore.

This would be the optimal solution:

<p align='center'>
<table width='100%'>
<tr>
<td><form><input type=submit value="click me" style="width:100%"></form></td>
</tr>
</table>
</p>

The answers you got assumed static text to compare against. If you want to compare against another column (say, you're joining two tables, and want to find ones where a column from one table is part of a column from another table), you can do this

WHERE NOT (someColumn LIKE '%' || someOtherColumn || '%')

Use "selrow" to get the selected row Id

var myGrid = $('#myGridId');

var selectedRowId = myGrid.jqGrid("getGridParam", 'selrow');

and then use getRowData to get the selected row at index selectedRowId.

var selectedRowData = myGrid.getRowData(selectedRowId);

If the multiselect is set to true on jqGrid, then use "selarrrow" to get list of selected rows:

var selectedRowIds = myGrid.jqGrid("getGridParam", 'selarrrow');

Use loop to iterate the list of selected rows:

var selectedRowData;

for(selectedRowIndex = 0; selectedRowIndex < selectedRowIds .length; selectedRowIds ++) {

   selectedRowData = myGrid.getRowData(selectedRowIds[selectedRowIndex]);

}

Try the following:

using System;
using System.Drawing;
using System.Threading;
using System.Windows.Forms;

class Program
{
    static void Main(string[] args)
    {
        var source =  @"
        <!DOCTYPE html>
        <html>
            <body>
                <p>An image from W3Schools:</p>
                <img 
                    src=""http://www.w3schools.com/images/w3schools_green.jpg"" 
                    alt=""W3Schools.com"" 
                    width=""104"" 
                    height=""142"">
            </body>
        </html>";
        StartBrowser(source);
        Console.ReadLine();
    }

    private static void StartBrowser(string source)
    {
        var th = new Thread(() =>
        {
            var webBrowser = new WebBrowser();
            webBrowser.ScrollBarsEnabled = false;
            webBrowser.DocumentCompleted +=
                webBrowser_DocumentCompleted;
            webBrowser.DocumentText = source;
            Application.Run();
        });
        th.SetApartmentState(ApartmentState.STA);
        th.Start();
    }

    static void 
        webBrowser_DocumentCompleted(
        object sender, 
        WebBrowserDocumentCompletedEventArgs e)
    {
        var webBrowser = (WebBrowser)sender;
        using (Bitmap bitmap = 
            new Bitmap(
                webBrowser.Width, 
                webBrowser.Height))
        {
            webBrowser
                .DrawToBitmap(
                bitmap, 
                new System.Drawing
                    .Rectangle(0, 0, bitmap.Width, bitmap.Height));
            bitmap.Save(@"filename.jpg", 
                System.Drawing.Imaging.ImageFormat.Jpeg);
        }
    }
}

Note: Credits should go to Hans Passant for his excellent answer on the question WebBrowser Control in a new thread which inspired this solution.

For executing pure SQL statements (I Don't Know About the FRAMEWORK- CodeIGNITER!!!) you can use SUB QUERY! The Syntax Would be as follows

SELECT t1.id FROM example t1 INNER JOIN (select id from (example2 t1 join example3 t2 on t1.id = t2.id)) as t2 ON t1.id = t2.id;

Hope you Get My Point!

I tried many solutions but only one worked for me, the install of Microsoft Visual Studio 2008 Express C++.

I got this issue with a Python 2.7 module written in C (yEnc, which has other issues with MS VS). Note that Python 2.7 is built with MS VS 2008 version, not 2010!

Despite the fact it's free, it is quite hard to find since MS is promoting VS 2010. Still, the MSDN official very direct links are still working: check https://stackoverflow.com/a/15319069/2227298 for download links.

Its use is similar to the use of this keyword in Java, i.e. to give a reference to the current object.

While constructs are terminated not with an End While but with a Wend.

While counter < 20
    counter = counter + 1
Wend

Note that this information is readily available in the documentation; just press F1. The page you link to deals with Visual Basic .NET, not VBA. While (no pun intended) there is some degree of overlap in syntax between VBA and VB.NET, one can't just assume that the documentation for the one can be applied directly to the other.

Also in the VBA help file:

Tip The Do...Loop statement provides a more structured and flexible way to perform looping.

You aren't creating any buttons, you just have an empty list.

You can forget the list and just create the buttons in the loop.

private void button1_Click(object sender, EventArgs e) 
{     
     int top = 50;
     int left = 100;

     for (int i = 0; i < 10; i++)     
     {         
          Button button = new Button();   
          button.Left = left;
          button.Top = top;
          this.Controls.Add(button);      
          top += button.Height + 2;
     }
} 

As others have said, use ArrayList. Here's how:

public class t
{
 private List<Integer> x = new ArrayList<Integer>();

 public void add(int num)
 {
   this.x.add(num);
 }
}

As you can see, your add method just calls the ArrayList's add method. This is only useful if your variable is private (which it is).

Oh, there are tons of example. Just have a look at anything within glib or gtk. You can see the work of function pointers in work there all the way.

Here e.g the initialization of the gtk_button stuff.

static void
gtk_button_class_init (GtkButtonClass *klass)
{
  GObjectClass *gobject_class;
  GtkObjectClass *object_class;
  GtkWidgetClass *widget_class;
  GtkContainerClass *container_class;

  gobject_class = G_OBJECT_CLASS (klass);
  object_class = (GtkObjectClass*) klass;
  widget_class = (GtkWidgetClass*) klass;
  container_class = (GtkContainerClass*) klass;

  gobject_class->constructor = gtk_button_constructor;
  gobject_class->set_property = gtk_button_set_property;
  gobject_class->get_property = gtk_button_get_property;

And in gtkobject.h you find the following declarations:

struct _GtkObjectClass
{
  GInitiallyUnownedClass parent_class;

  /* Non overridable class methods to set and get per class arguments */
  void (*set_arg) (GtkObject *object,
           GtkArg    *arg,
           guint      arg_id);
  void (*get_arg) (GtkObject *object,
           GtkArg    *arg,
           guint      arg_id);

  /* Default signal handler for the ::destroy signal, which is
   *  invoked to request that references to the widget be dropped.
   *  If an object class overrides destroy() in order to perform class
   *  specific destruction then it must still invoke its superclass'
   *  implementation of the method after it is finished with its
   *  own cleanup. (See gtk_widget_real_destroy() for an example of
   *  how to do this).
   */
  void (*destroy)  (GtkObject *object);
};

The (*set_arg) stuff is a pointer to function and this can e.g be assigned another implementation in some derived class.

Often you see something like this

struct function_table {
   char *name;
   void (*some_fun)(int arg1, double arg2);
};

void function1(int  arg1, double arg2)....


struct function_table my_table [] = {
    {"function1", function1},
...

So you can reach into the table by name and call the "associated" function.

Or maybe you use a hash table in which you put the function and call it "by name".

Regards
Friedrich

As per https://android.stackexchange.com/a/78183/239063 you can run a one line command in Linux to add in an appropriate tar header to extract it.

( printf "\x1f\x8b\x08\x00\x00\x00\x00\x00" ; tail -c +25 backup.ab ) | tar xfvz -

Replace backup.ab with the path to your file.

Looking for this on 2018. Click event on option tag, inside a select tag, is not fired on Chrome.

Use change event, and capture the selected option:

$(document).delegate("select", "change", function() {
    //capture the option
    var $target = $("option:selected",$(this));
});

Be aware that $target may be a collection of objects if the select tag is multiple.

You can't use PHP in the WordPress back-end Page editor. Maybe with a plugin you can, but not out of the box.

The easiest solution for this is creating a shortcode. Then you can use something like this

function input_func( $atts ) {
    extract( shortcode_atts( array(
        'type' => 'text',
        'name' => '',
    ), $atts ) );

    return '<input name="' . $name . '" id="' . $name . '" value="' . (isset($_GET\['from'\]) && $_GET\['from'\] ? $_GET\['from'\] : '') . '" type="' . $type . '" />';
}
add_shortcode( 'input', 'input_func' );

See the Shortcode_API.

I use method 3 because it's the most understandable for others (whenever you see an <a> tag, you know it's a link) and when you are part of a team, you have to make simple things ;).

And finally I don't think it's useful and efficient to use JS simply to navigate to an other page.

Well, technically '\0' is a character while "\0" is a string, so if you're checking for the null termination character the former is correct. However, as Chris Lutz points out in his answer, your comparison won't work in it's current form.

"Inflating" a view means taking the layout XML and parsing it to create the view and viewgroup objects from the elements and their attributes specified within, and then adding the hierarchy of those views and viewgroups to the parent ViewGroup. When you call setContentView(), it attaches the views it creates from reading the XML to the activity. You can also use LayoutInflater to add views to another ViewGroup, which can be a useful tool in a lot of circumstances.

shutdown you pc and open bios settings, and enable Virtual Technology-x option and restart your pc.

done.

Bottom Line

Your code has retrieved data (entities) via entity-framework with lazy-loading enabled and after the DbContext has been disposed, your code is referencing properties (related/relationship/navigation entities) that was not explicitly requested.

More Specifically

The InvalidOperationException with this message always means the same thing: you are requesting data (entities) from entity-framework after the DbContext has been disposed.

A simple case:

(these classes will be used for all examples in this answer, and assume all navigation properties have been configured correctly and have associated tables in the database)

public class Person
{
  public int Id { get; set; }
  public string name { get; set; }
  public int? PetId { get; set; }
  public Pet Pet { get; set; }
}

public class Pet 
{
  public string name { get; set; }
}

using (var db = new dbContext())
{
  var person = db.Persons.FirstOrDefaultAsync(p => p.id == 1);
}

Console.WriteLine(person.Pet.Name);

The last line will throw the InvalidOperationException because the dbContext has not disabled lazy-loading and the code is accessing the Pet navigation property after the Context has been disposed by the using statement.

Debugging

How do you find the source of this exception? Apart from looking at the exception itself, which will be thrown exactly at the location where it occurs, the general rules of debugging in Visual Studio apply: place strategic breakpoints and inspect your variables, either by hovering the mouse over their names, opening a (Quick)Watch window or using the various debugging panels like Locals and Autos.

If you want to find out where the reference is or isn't set, right-click its name and select "Find All References". You can then place a breakpoint at every location that requests data, and run your program with the debugger attached. Every time the debugger breaks on such a breakpoint, you need to determine whether your navigation property should have been populated or if the data requested is necessary.

Ways to Avoid

Disable Lazy-Loading

public class MyDbContext : DbContext
{
  public MyDbContext()
  {
    this.Configuration.LazyLoadingEnabled = false;
  }
}

Pros: Instead of throwing the InvalidOperationException the property will be null. Accessing properties of null or attempting to change the properties of this property will throw a NullReferenceException.

How to explicitly request the object when needed:

using (var db = new dbContext())
{
  var person = db.Persons
    .Include(p => p.Pet)
    .FirstOrDefaultAsync(p => p.id == 1);
}
Console.WriteLine(person.Pet.Name);  // No Exception Thrown

In the previous example, Entity Framework will materialize the Pet in addition to the Person. This can be advantageous because it’s a single call the the database. (However, there can also be huge performance problems depending on the number of returned results and the number of navigation properties requested, in this instance, there would be no performance penalty because both instances are only a single record and a single join).

or

using (var db = new dbContext())
{
  var person = db.Persons.FirstOrDefaultAsync(p => p.id == 1);

  var pet = db.Pets.FirstOrDefaultAsync(p => p.id == person.PetId);
}
Console.WriteLine(person.Pet.Name);  // No Exception Thrown

In the previous example, Entity Framework will materialize the Pet independently of the Person by making an additional call to the database. By default, Entity Framework tracks objects it has retrieved from the database and if it finds navigation properties that match it will auto-magically populate these entities. In this instance because the PetId on the Person object matches the Pet.Id, Entity Framework will assign the Person.Pet to the Pet value retrieved, before the value is assigned to the pet variable.

I always recommend this approach as it forces programmers to understand when and how code is request data via Entity Framework. When code throws a null reference exception on a property of an entity, you can almost always be sure you have not explicitly requested that data.

I developed a software tool that opens (most) Pickle files directly in your browser (nothing is transferred so it's 100% private):

https://pickleviewer.com/

You can display an image in your own window using Tkinter, w/o depending on image viewers installed in your system:

import Tkinter as tk
from PIL import Image, ImageTk  # Place this at the end (to avoid any conflicts/errors)

window = tk.Tk()
#window.geometry("500x500") # (optional)    
imagefile = {path_to_your_image_file}
img = ImageTk.PhotoImage(Image.open(imagefile))
lbl = tk.Label(window, image = img).pack()
window.mainloop()

For Python 3, replace import Tkinter as tk with import tkinter as tk.

A little late for the party, here's how I do it

1. Undeploy application from manager
2. Shutdown tomcat using ./shutdown.sh
3. Delete browser cache
4. Delete the application from webapps, and from /work/Catalina/...
5. Startup tomcat using ./startup.sh
6. Copy the new version of the application into /webapps and start it.

check the speling and Upper/Lower case of term ""

when ever we write @RenderSection("name", required: false) make sure that the razor view Contains a section @section name{} so check the speling and Upper/Lower case of term "" Correct in this case is "Scripts"

This code let you fill the banner to the maximum width and keep the ratio. This will only work in portrait. You must recreate the ad when you rotate the device. In landscape you should just leave the ad as is because it will be quite big an blurred.

Display display = getWindowManager().getDefaultDisplay();
int width = display.getWidth();
double ratio = ((float) (width))/300.0;
int height = (int)(ratio*50);

AdView adView = new AdView(this,"ad_url","my_ad_key",true,true);
LinearLayout layout = (LinearLayout) findViewById(R.id.testing);
mAdView.setLayoutParams(new FrameLayout.LayoutParams(LayoutParams.FILL_PARENT,height));
adView.setAdListener(this);
layout.addView(adView);

SERIOUS DISCLAIMER

This solution has a serious security flaw. Please use at your own risk.
Have a look at the comments on this post, and look at all the answers to this question.

OK, I had to go to the customer premises and found a solution. I:

• Exported the keystore that holds the signing keys in PKCS #12 format
• Opened control panel Java -> Security tab
• Clicked Manage certificates
• Imported this new keystore as a secure site CA

Then I opened the JAWS application without any warning. This is a little bit cumbersome, but much cheaper than buying a signed certificate!

If the buckets get too full, then we have to look through

a very long linked list.

And that's kind of defeating the point.

So here's an example where I have four buckets.

I have elephant and badger in my HashSet so far.

This is a pretty good situation, right?

Each element has zero or one elements.

Now we put two more elements into our HashSet.

     buckets      elements
      -------      -------
        0          elephant
        1          otter
         2          badger
         3           cat

This isn't too bad either.

Every bucket only has one element . So if I wanna know, does this contain panda?

I can very quickly look at bucket number 1 and it's not

there and

I known it's not in our collection.

If I wanna know if it contains cat, I look at bucket

number 3,

I find cat, I very quickly know if it's in our

collection.

What if I add koala, well that's not so bad.

             buckets      elements
      -------      -------
        0          elephant
        1          otter -> koala 
         2          badger
         3           cat

Maybe now instead of in bucket number 1 only looking at

one element,

I need to look at two.

But at least I don't have to look at elephant, badger and

cat.

If I'm again looking for panda, it can only be in bucket

number 1 and

I don't have to look at anything other then otter and

koala.

But now I put alligator in bucket number 1 and you can

see maybe where this is going.

That if bucket number 1 keeps getting bigger and bigger and

bigger, then I'm basically having to look through all of

those elements to find

something that should be in bucket number 1.

            buckets      elements
      -------      -------
        0          elephant
        1          otter -> koala ->alligator
         2          badger
         3           cat

If I start adding strings to other buckets,

right, the problem just gets bigger and bigger in every

single bucket.

How do we stop our buckets from getting too full?

The solution here is that

          "the HashSet can automatically

        resize the number of buckets."

There's the HashSet realizes that the buckets are getting

too full.

It's losing this advantage of this all of one lookup for

elements.

And it'll just create more buckets(generally twice as before) and

then place the elements into the correct bucket.

So here's our basic HashSet implementation with separate

chaining. Now I'm going to create a "self-resizing HashSet".

This HashSet is going to realize that the buckets are

getting too full and

it needs more buckets.

loadFactor is another field in our HashSet class.

loadFactor represents the average number of elements per

bucket,

above which we want to resize.

loadFactor is a balance between space and time.

If the buckets get too full then we'll resize.

That takes time, of course, but

it may save us time down the road if the buckets are a

little more empty.

Let's see an example.

Here's a HashSet, we've added four elements so far.

Elephant, dog, cat and fish.

          buckets      elements
      -------      -------
        0          
        1          elephant
         2          cat ->dog
         3           fish
          4         
           5

At this point, I've decided that the loadFactor, the

threshold,

the average number of elements per bucket that I'm okay

with, is 0.75.

The number of buckets is buckets.length, which is 6, and

at this point our HashSet has four elements, so the

current size is 4.

We'll resize our HashSet, that is we'll add more buckets,

when the average number of elements per bucket exceeds

the loadFactor.

That is when current size divided by buckets.length is

greater than loadFactor.

At this point, the average number of elements per bucket

is 4 divided by 6.

4 elements, 6 buckets, that's 0.67.

That's less than the threshold I set of 0.75 so we're

okay.

We don't need to resize.

But now let's say we add woodchuck.

                  buckets      elements
      -------      -------
        0          
        1          elephant
         2        woodchuck-> cat ->dog
         3           fish
          4         
           5

Woodchuck would end up in bucket number 3.

At this point, the currentSize is 5.

And now the average number of elements per bucket

is the currentSize divided by buckets.length.

That's 5 elements divided by 6 buckets is 0.83.

And this exceeds the loadFactor which was 0.75.

In order to address this problem, in order to make the

buckets perhaps a little

more empty so that operations like determining whether a

bucket contains

an element will be a little less complex, I wanna resize

my HashSet.

Resizing the HashSet takes two steps.

First I'll double the number of buckets, I had 6 buckets,

now I'm going to have 12 buckets.

Note here that the loadFactor which I set to 0.75 stays the same.

But the number of buckets changed is 12,

the number of elements stayed the same, is 5.

5 divided by 12 is around 0.42, that's well under our

loadFactor,

so we're okay now.

But we're not done because some of these elements are in

the wrong bucket now.

For instance, elephant.

Elephant was in bucket number 2 because the number of

characters in elephant

was 8.

We have 6 buckets, 8 minus 6 is 2.

That's why it ended up in number 2.

But now that we have 12 buckets, 8 mod 12 is 8, so

elephant does not belong in bucket number 2 anymore.

Elephant belongs in bucket number 8.

What about woodchuck?

Woodchuck was the one that started this whole problem.

Woodchuck ended up in bucket number 3.

Because 9 mod 6 is 3.

But now we do 9 mod 12.

9 mod 12 is 9, woodchuck goes to bucket number 9.

And you see the advantage of all this.

Now bucket number 3 only has two elements whereas before it had 3.

So here's our code,

where we had our HashSet with separate chaining that

didn't do any resizing.

Now, here's a new implementation where we use resizing.

Most of this code is the same,

we're still going to determine whether it contains the

value already.

If it doesn't, then we'll figure it out which bucket it

should go into and

then add it to that bucket, add it to that LinkedList.

But now we increment the currentSize field.

currentSize was the field that kept track of the number

of elements in our HashSet.

We're going to increment it and then we're going to look

at the average load,

the average number of elements per bucket.

We'll do that division down here.

We have to do a little bit of casting here to make sure

that we get a double.

And then, we'll compare that average load to the field

that I've set as

0.75 when I created this HashSet, for instance, which was

the loadFactor.

If the average load is greater than the loadFactor,

that means there's too many elements per bucket on

average, and I need to reinsert.

So here's our implementation of the method to reinsert

all the elements.

First, I'll create a local variable called oldBuckets.

Which is referring to the buckets as they currently stand

before I start resizing everything.

Note I'm not creating a new array of linked lists just yet.

I'm just renaming buckets as oldBuckets.

Now remember buckets was a field in our class, I'm going

to now create a new array

of linked lists but this will have twice as many elements

as it did the first time.

Now I need to actually do the reinserting,

I'm going to iterate through all of the old buckets.

Each element in oldBuckets is a LinkedList of strings

that is a bucket.

I'll go through that bucket and get each element in that

bucket.

And now I'm gonna reinsert it into the newBuckets.

I will get its hashCode.

I will figure out which index it is.

And now I get the new bucket, the new LinkedList of

strings and

I'll add it to that new bucket.

So to recap, HashSets as we've seen are arrays of Linked

Lists, or buckets.

A self resizing HashSet can realize using some ratio or

I looked for a solution to this problem, and came across the present page. I implemented the above solution:

$("#testdiv",opener.document) //doesn't work

But it doesn't work. Maybe it did work in previous jQuery versions, but it doesn't seem to work now.

I found this working solution on another stackoverflow page: how to access parent window object using jquery?

From which I got this working solution:

window.opener.$("#testdiv") //This works.

How to Intialize?

// 0 - for private mode`
SharedPreferences pref = getApplicationContext().getSharedPreferences("MyPref", 0); 

Editor editor = pref.edit();

How to Store Data In Shared Preference?

editor.putString("key_name", "string value"); // Storing string

OR

editor.putInt("key_name", "int value"); //Storing integer

And don't forget to apply :

editor.apply();

How to retrieve Data From Shared Preferences ?

pref.getString("key_name", null); // getting String

pref.getInt("key_name", 0); // getting Integer

Hope this will Help U :)

you can use np.int_:

>>> x = np.array([[1.0, 2.3], [1.3, 2.9]])
>>> x
array([[ 1. ,  2.3],
       [ 1.3,  2.9]])
>>> np.int_(x)
array([[1, 2],
       [1, 2]])

Since jQuery 3.3.0, it is possible to pass arrays to .addClass(), .removeClass() and toggleClass(), which makes it easier if there is any logic which determines which classes should be added or removed, as you don't need to mess around with the space-delimited strings.

$("div").removeClass(["class1", "class2"]); 

My coworker and I used the script from https://github.com/tombigel/detect-zoom. In addition, we also dynamically created a svg element and check its currentScale property. It works great on Chrome and likely most browsers too. On FF the "zoom text only" feature has to be turned off though. SVG is supported on most browsers. At the time of this writing, tested on IE10, FF19 and Chrome28.

var svg = document.createElementNS('http://www.w3.org/2000/svg', 'svg');
svg.setAttribute('xmlns', 'http://www.w3.org/2000/svg');
svg.setAttribute('version', '1.1');
document.body.appendChild(svg);
var z = svg.currentScale;
... more code ...
document.body.removeChild(svg);

You are missing a semicolon at the end of your 'struct' definition.

Also,

*sotrudnik

needs to be

sotrudnik*

It's a ternary operator, or the short form for if..else.

condition ? value if true : value if false

See Microsoft Docs | ?: operator (C# reference).

This function uses the current millisecond time to subtract the current week, and then subtracts one more week if the current date is on a monday (javascript counts from sunday).

function getMonday(fromDate) {
    // length of one day i milliseconds
  var dayLength = 24 * 60 * 60 * 1000;

  // Get the current date (without time)
    var currentDate = new Date(fromDate.getFullYear(), fromDate.getMonth(), fromDate.getDate());

  // Get the current date's millisecond for this week
  var currentWeekDayMillisecond = ((currentDate.getDay()) * dayLength);

  // subtract the current date with the current date's millisecond for this week
  var monday = new Date(currentDate.getTime() - currentWeekDayMillisecond + dayLength);

  if (monday > currentDate) {
    // It is sunday, so we need to go back further
    monday = new Date(monday.getTime() - (dayLength * 7));
  }

  return monday;
}

I have tested it when week spans over from one month to another (and also years), and it seems to work properly.

Solution 1 (Elegant approach with great user experience)

HTML

<input id="inputID" class="uppercase" name="inputName" value="" />

CSS

.uppercase{
    text-transform: uppercase;
}

JS

$('#inputID').on('blur', function(){
    this.value = this.value.toUpperCase();
});

By using CSS text-transform: uppercase; you'll eliminate the animation of lower to uppercase as the user types into the field.

Use blur event to handle converting to uppercase. This happens behind the scene as CSS took care of the user's visually appealing masking.

Solution 2 (Great, but less elegant)

If you insist on using keyup, here it is...

$('#inputID').on('keyup', function(){
    var caretPos = this.selectionStart;
    this.value = this.value.toUpperCase();
    this.setSelectionRange(caretPos, caretPos);
});

User would notice the animation of lowercase to uppercase as they type into the field. It gets the job done.

Solution 3 (Just get the job done)

$('#inputID').on('keyup', function(){
    this.value = this.value.toUpperCase();
});

This method is most commonly suggested but I do not recommend.

The downside of this solution is you'll be annoying the user as the cursor's caret position keeps jumping to the end of the text after every key input. Unless you know your users will never encounter typos or they will always clear the text and retype every single time, this method works.

I think there is a difference between max-age=0, must-revalidate and no-cache:

In the must-revalidate case the client is allowed to send a If-Modified-Since request and serve the response from cache if 304 Not Modified is returned.

In the no-cache case, the client must not cache the response, so should not use If-Modified-Since.

Here's one approach that uses a keylistener,but uses the keyChar (instead of the keyCode):

http://edenti.deis.unibo.it/utils/Java-tips/Validating%20numerical%20input%20in%20a%20JTextField.txt

 keyText.addKeyListener(new KeyAdapter() {
    public void keyTyped(KeyEvent e) {
      char c = e.getKeyChar();
      if (!((c >= '0') && (c <= '9') ||
         (c == KeyEvent.VK_BACK_SPACE) ||
         (c == KeyEvent.VK_DELETE))) {
        getToolkit().beep();
        e.consume();
      }
    }
  });

Another approach (which personally I find almost as over-complicated as Swing's JTree model) is to use Formatted Text Fields:

http://docs.oracle.com/javase/tutorial/uiswing/components/formattedtextfield.html

If you want the font you chose to be applied and not the one in bootstrap without modifying the original bootstrap files you can rearrange the tags in your HTML documents so your CSS files that applies the font called after the bootstrap one. In this way since the browser reads the documents line after line first it will read the bootstrap files and apply it roles then it will read your file and override the roles in the bootstrap and replace it with the ones in your file.

While JonSkeet's answer explains the difference in a typically excellent way there is another difference: exception handling.

Task.WaitAll throws an AggregateException when any of the tasks throws and you can examine all thrown exceptions. The await in await Task.WhenAll unwraps the AggregateException and 'returns' only the first exception.

When the program below executes with await Task.WhenAll(taskArray) the output is as follows.

19/11/2016 12:18:37 AM: Task 1 started
19/11/2016 12:18:37 AM: Task 3 started
19/11/2016 12:18:37 AM: Task 2 started
Caught Exception in Main at 19/11/2016 12:18:40 AM: Task 1 throwing at 19/11/2016 12:18:38 AM
Done.

When the program below is executed with Task.WaitAll(taskArray) the output is as follows.

19/11/2016 12:19:29 AM: Task 1 started
19/11/2016 12:19:29 AM: Task 2 started
19/11/2016 12:19:29 AM: Task 3 started
Caught AggregateException in Main at 19/11/2016 12:19:32 AM: Task 1 throwing at 19/11/2016 12:19:30 AM
Caught AggregateException in Main at 19/11/2016 12:19:32 AM: Task 2 throwing at 19/11/2016 12:19:31 AM
Caught AggregateException in Main at 19/11/2016 12:19:32 AM: Task 3 throwing at 19/11/2016 12:19:32 AM
Done.

The program:

class MyAmazingProgram
{
    public class CustomException : Exception
    {
        public CustomException(String message) : base(message)
        { }
    }

    static void WaitAndThrow(int id, int waitInMs)
    {
        Console.WriteLine($"{DateTime.UtcNow}: Task {id} started");

        Thread.Sleep(waitInMs);
        throw new CustomException($"Task {id} throwing at {DateTime.UtcNow}");
    }

    static void Main(string[] args)
    {
        Task.Run(async () =>
        {
            await MyAmazingMethodAsync();
        }).Wait();

    }

    static async Task MyAmazingMethodAsync()
    {
        try
        {
            Task[] taskArray = { Task.Factory.StartNew(() => WaitAndThrow(1, 1000)),
                                 Task.Factory.StartNew(() => WaitAndThrow(2, 2000)),
                                 Task.Factory.StartNew(() => WaitAndThrow(3, 3000)) };

            Task.WaitAll(taskArray);
            //await Task.WhenAll(taskArray);
            Console.WriteLine("This isn't going to happen");
        }
        catch (AggregateException ex)
        {
            foreach (var inner in ex.InnerExceptions)
            {
                Console.WriteLine($"Caught AggregateException in Main at {DateTime.UtcNow}: " + inner.Message);
            }
        }
        catch (Exception ex)
        {
            Console.WriteLine($"Caught Exception in Main at {DateTime.UtcNow}: " + ex.Message);
        }
        Console.WriteLine("Done.");
        Console.ReadLine();
    }
}

You can also use sqlcmd mode for this (enable this on the "Query" menu in Management Studio).

:setvar dbname "TEST" 

CREATE DATABASE $(dbname)
GO
ALTER DATABASE $(dbname) SET COMPATIBILITY_LEVEL = 90
GO
ALTER DATABASE $(dbname) SET RECOVERY SIMPLE 
GO

EDIT:

Check this MSDN article to set parameters via the SQLCMD tool.

SET foreign_key_checks = 0;
DROP TABLE IF EXISTS a,b,c;
SET foreign_key_checks = 1;

Then you do not have to worry about dropping them in the correct order, nor whether they actually exist.

N.B. this is for MySQL only (as in the question). Other databases likely have different methods for doing this.

It's a big problem indeed. Try out this code:

print "%.2f" % (round((2*4.4+3*5.6+3*4.4)/8,2),)

It displays 4.85. Then you do:

print "Media = %.1f" % (round((2*4.4+3*5.6+3*4.4)/8,1),)

and it shows 4.8. Do you calculations by hand the exact answer is 4.85, but if you try:

print "Media = %.20f" % (round((2*4.4+3*5.6+3*4.4)/8,20),)

you can see the truth: the float point is stored as the nearest finite sum of fractions whose denominators are powers of two.

This should work

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

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

Yeah, Date object complects date and time, so comparing it with just date value does not work.

You can simply use the $where operator to express more complex condition with Javascript boolean expression :)

db.posts.find({ '$where': 'this.created_on.toJSON().slice(0, 10) == "2012-07-14"' })

created_on is the datetime field and 2012-07-14 is the specified date.

Date should be exactly in YYYY-MM-DD format.

Note: Use $where sparingly, it has performance implications.

It work a simple example recursive (Y)

<?php 


function factorial($y,$x) { 

    if ($y < $x) { 
        echo $y; 
    } else { 
        echo $x; 
        factorial($y,$x+1);
    } 
}

$y=10;

$x=0;
factorial($y,$x);

 ?>

A simple one would be

\d{4}-\d{2}-\d{2}

Debuggex Demo

but this does not restrict month to 1-12 and days from 1 to 31.

There are more complex checks like in the other answers, by the way pretty clever ones. Nevertheless you have to check for a valid date, because there are no checks for if a month has 28, 30, or 31 days.

In case you don't want to use form_row or form_rest and just want to access value of the _token in your twig template. Use the following:

<input type="hidden" name="form[_token]" value="{{ form._token.vars.value }}" />

You can try this:

function submitForm() {
  $('form[name="contact-form"]').submit();
  $('input[type="text"], textarea').val('');
}

This script needs jquery to be added on the page.

I had the same problema, but as described in the manual.pdf, you have to:

You are using an Oracle Instant Client but have not set all required environment variables:

• PATH: Needs to include the Instant Client directory where oci.dll is located
• TNS_ADMIN: Needs to point to the directory where tnsnames.ora is located.
• NLS_LANG: Defines the language, territory, and character set for the client.

Regards

You should use the csv module to read the tab-separated value file. Do not read it into memory in one go. Each row you read has all the information you need to write rows to the output CSV file, after all. Keep the output file open throughout.

import csv

with open('sample.txt', newline='') as tsvin, open('new.csv', 'w', newline='') as csvout:
    tsvin = csv.reader(tsvin, delimiter='\t')
    csvout = csv.writer(csvout)

    for row in tsvin:
        count = int(row[4])
        if count > 0:
            csvout.writerows([row[2:4] for _ in range(count)])

or, using the itertools module to do the repeating with itertools.repeat():

from itertools import repeat
import csv

with open('sample.txt', newline='') as tsvin, open('new.csv', 'w', newline='') as csvout:
    tsvin = csv.reader(tsvin, delimiter='\t')
    csvout = csv.writer(csvout)

    for row in tsvin:
        count = int(row[4])
        if count > 0:
            csvout.writerows(repeat(row[2:4], count))

I know this thread is a bit old but I came up with a better solution which supports Multidimensional hashes. It uses delete_if? except its multidimensional and cleans out anything with a an empty value by default and if a block is passed it is passed down through it's children.

# Hash cleaner
class Hash
    def clean!
        self.delete_if do |key, val|
            if block_given?
                yield(key,val)
            else
                # Prepeare the tests
                test1 = val.nil?
                test2 = val === 0
                test3 = val === false
                test4 = val.empty? if val.respond_to?('empty?')
                test5 = val.strip.empty? if val.is_a?(String) && val.respond_to?('empty?')

                # Were any of the tests true
                test1 || test2 || test3 || test4 || test5
            end
        end

        self.each do |key, val|
            if self[key].is_a?(Hash) && self[key].respond_to?('clean!')
                if block_given?
                    self[key] = self[key].clean!(&Proc.new)
                else
                    self[key] = self[key].clean!
                end
            end
        end

        return self
    end
end

There is an event Page.Unload. At that moment page is already rendered in HTML and HTML can't be modified. Still, all page objects are available.

You can repaint and / or requery:

On the close event of form B:

Forms!FormA.Requery

Is this what you mean?

If you are checking for DBNULL, converting a SQL Datetime to a .NET DateTime should not be a problem. However, you can run into problems converting a .NET DateTime to a valid SQL DateTime.

SQL Server does not recognize dates prior to 1/1/1753. Thats the year England adopted the Gregorian Calendar. Usually checking for DateTime.MinValue is sufficient, but if you suspect that the data could have years before the 18th century, you need to make another check or use a different data type. (I often wonder what Museums use in their databases)

Checking for max date is not really necessary, SQL Server and .NET DateTime both have a max date of 12/31/9999 It may be a valid business rule but it won't cause a problem.

Python Force-suppress all exponential notation when printing numpy ndarrays, wrangle text justification, rounding and print options:

What follows is an explanation for what is going on, scroll to bottom for code demos.

Passing parameter suppress=True to function set_printoptions works only for numbers that fit in the default 8 character space allotted to it, like this:

import numpy as np
np.set_printoptions(suppress=True) #prevent numpy exponential 
                                   #notation on print, default False

#            tiny     med  large
a = np.array([1.01e-5, 22, 1.2345678e7])  #notice how index 2 is 8 
                                          #digits wide

print(a)    #prints [ 0.0000101   22.     12345678. ]

However if you pass in a number greater than 8 characters wide, exponential notation is imposed again, like this:

np.set_printoptions(suppress=True)

a = np.array([1.01e-5, 22, 1.2345678e10])    #notice how index 2 is 10
                                             #digits wide, too wide!

#exponential notation where we've told it not to!
print(a)    #prints [1.01000000e-005   2.20000000e+001   1.23456780e+10]

numpy has a choice between chopping your number in half thus misrepresenting it, or forcing exponential notation, it chooses the latter.

Here comes set_printoptions(formatter=...) to the rescue to specify options for printing and rounding. Tell set_printoptions to just print bare a bare float:

np.set_printoptions(suppress=True,
   formatter={'float_kind':'{:f}'.format})

a = np.array([1.01e-5, 22, 1.2345678e30])  #notice how index 2 is 30
                                           #digits wide.  

#Ok good, no exponential notation in the large numbers:
print(a)  #prints [0.000010 22.000000 1234567799999999979944197226496.000000] 

We've force-suppressed the exponential notation, but it is not rounded or justified, so specify extra formatting options:

np.set_printoptions(suppress=True,
   formatter={'float_kind':'{:0.2f}'.format})  #float, 2 units 
                                               #precision right, 0 on left

a = np.array([1.01e-5, 22, 1.2345678e30])   #notice how index 2 is 30
                                            #digits wide

print(a)  #prints [0.00 22.00 1234567799999999979944197226496.00]

The drawback for force-suppressing all exponential notion in ndarrays is that if your ndarray gets a huge float value near infinity in it, and you print it, you're going to get blasted in the face with a page full of numbers.

Full example Demo 1:

from pprint import pprint
import numpy as np
#chaotic python list of lists with very different numeric magnitudes
my_list = [[3.74, 5162, 13683628846.64, 12783387559.86, 1.81],
           [9.55, 116, 189688622.37, 260332262.0, 1.97],
           [2.2, 768, 6004865.13, 5759960.98, 1.21],
           [3.74, 4062, 3263822121.39, 3066869087.9, 1.93],
           [1.91, 474, 44555062.72, 44555062.72, 0.41],
           [5.8, 5006, 8254968918.1, 7446788272.74, 3.25],
           [4.5, 7887, 30078971595.46, 27814989471.31, 2.18],
           [7.03, 116, 66252511.46, 81109291.0, 1.56],
           [6.52, 116, 47674230.76, 57686991.0, 1.43],
           [1.85, 623, 3002631.96, 2899484.08, 0.64],
           [13.76, 1227, 1737874137.5, 1446511574.32, 4.32],
           [13.76, 1227, 1737874137.5, 1446511574.32, 4.32]]

#convert python list of lists to numpy ndarray called my_array
my_array = np.array(my_list)

#This is a little recursive helper function converts all nested 
#ndarrays to python list of lists so that pretty printer knows what to do.
def arrayToList(arr):
    if type(arr) == type(np.array):
        #If the passed type is an ndarray then convert it to a list and
        #recursively convert all nested types
        return arrayToList(arr.tolist())
    else:
        #if item isn't an ndarray leave it as is.
        return arr

#suppress exponential notation, define an appropriate float formatter
#specify stdout line width and let pretty print do the work
np.set_printoptions(suppress=True,
   formatter={'float_kind':'{:16.3f}'.format}, linewidth=130)
pprint(arrayToList(my_array))

Prints:

array([[           3.740,         5162.000,  13683628846.640,  12783387559.860,            1.810],
       [           9.550,          116.000,    189688622.370,    260332262.000,            1.970],
       [           2.200,          768.000,      6004865.130,      5759960.980,            1.210],
       [           3.740,         4062.000,   3263822121.390,   3066869087.900,            1.930],
       [           1.910,          474.000,     44555062.720,     44555062.720,            0.410],
       [           5.800,         5006.000,   8254968918.100,   7446788272.740,            3.250],
       [           4.500,         7887.000,  30078971595.460,  27814989471.310,            2.180],
       [           7.030,          116.000,     66252511.460,     81109291.000,            1.560],
       [           6.520,          116.000,     47674230.760,     57686991.000,            1.430],
       [           1.850,          623.000,      3002631.960,      2899484.080,            0.640],
       [          13.760,         1227.000,   1737874137.500,   1446511574.320,            4.320],
       [          13.760,         1227.000,   1737874137.500,   1446511574.320,            4.320]])

Full example Demo 2:

import numpy as np  
#chaotic python list of lists with very different numeric magnitudes 

#            very tiny      medium size            large sized
#            numbers        numbers                numbers

my_list = [[0.000000000074, 5162, 13683628846.64, 1.01e10, 1.81], 
           [1.000000000055,  116, 189688622.37, 260332262.0, 1.97], 
           [0.010000000022,  768, 6004865.13,   -99e13, 1.21], 
           [1.000000000074, 4062, 3263822121.39, 3066869087.9, 1.93], 
           [2.91,            474, 44555062.72, 44555062.72, 0.41], 
           [5,              5006, 8254968918.1, 7446788272.74, 3.25], 
           [0.01,           7887, 30078971595.46, 27814989471.31, 2.18], 
           [7.03,            116, 66252511.46, 81109291.0, 1.56], 
           [6.52,            116, 47674230.76, 57686991.0, 1.43], 
           [1.85,            623, 3002631.96, 2899484.08, 0.64], 
           [13.76,          1227, 1737874137.5, 1446511574.32, 4.32], 
           [13.76,          1337, 1737874137.5, 1446511574.32, 4.32]] 
import sys 
#convert python list of lists to numpy ndarray called my_array 
my_array = np.array(my_list) 
#following two lines do the same thing, showing that np.savetxt can 
#correctly handle python lists of lists and numpy 2D ndarrays. 
np.savetxt(sys.stdout, my_list, '%19.2f') 
np.savetxt(sys.stdout, my_array, '%19.2f') 

Prints:

 0.00             5162.00      13683628846.64      10100000000.00              1.81
 1.00              116.00        189688622.37        260332262.00              1.97
 0.01              768.00          6004865.13 -990000000000000.00              1.21
 1.00             4062.00       3263822121.39       3066869087.90              1.93
 2.91              474.00         44555062.72         44555062.72              0.41
 5.00             5006.00       8254968918.10       7446788272.74              3.25
 0.01             7887.00      30078971595.46      27814989471.31              2.18
 7.03              116.00         66252511.46         81109291.00              1.56
 6.52              116.00         47674230.76         57686991.00              1.43
 1.85              623.00          3002631.96          2899484.08              0.64
13.76             1227.00       1737874137.50       1446511574.32              4.32
13.76             1337.00       1737874137.50       1446511574.32              4.32
 0.00             5162.00      13683628846.64      10100000000.00              1.81
 1.00              116.00        189688622.37        260332262.00              1.97
 0.01              768.00          6004865.13 -990000000000000.00              1.21
 1.00             4062.00       3263822121.39       3066869087.90              1.93
 2.91              474.00         44555062.72         44555062.72              0.41
 5.00             5006.00       8254968918.10       7446788272.74              3.25
 0.01             7887.00      30078971595.46      27814989471.31              2.18
 7.03              116.00         66252511.46         81109291.00              1.56
 6.52              116.00         47674230.76         57686991.00              1.43
 1.85              623.00          3002631.96          2899484.08              0.64
13.76             1227.00       1737874137.50       1446511574.32              4.32
13.76             1337.00       1737874137.50       1446511574.32              4.32

Notice that rounding is consistent at 2 units precision, and exponential notation is suppressed in both the very large e+x and very small e-x ranges.

Hey I just had this problem and found that I wasn't looking at the folder location closely enough:

I had

require_once /vagrant/public/liberate/**APP**/vendor/autoload.php

What worked was:

require_once /vagrant/public/liberate/vendor/autoload.php

It was very easy (as a beginner) to overlook this very unnoticeable issue. Yes I do realize that the require issue being logged points directly to the issue at hand, but if you are a beginner, like me, these things can be easily overlooked.

FIX:

Have a good look at the debug of ( __ Dir __ '/etc/etc/etc/file.php') then have your file system open in a different window, and map the two directly. If there is even the slightest difference this require will not work and the above error will be spat out.

Try with these steps :

npm rm -g create-react-app

npm install -g create-react-app

npx create-react-app my-app

Definitely this works!!

The other answers regarding the use of nvl() are correct however none seem to address a more salient point:

Should you even have NULLs in this column?

Do they have a meaning other than 0?

This seems like a case where you should have a NOT NULL DEFAULT 0 on th ecolumn

Also note that if you want to apply an instance method to an array, you need to pass the function as:

call_user_func_array(array($instance, "MethodName"), $myArgs);

Actually you can just push query like this: this.$router.push({query: {plan: 'private'}})

Based on: https://github.com/vuejs/vue-router/issues/1631

Your original question was unclear, assuming Kevin's edit/interpretation is correct then this first option doesn't apply

The typical options is using the onload event:

<body onload="javascript:SomeFunction()">
....

You can also place your javascript at the very end of the body; it won't start executing until the doc is complete.

<body>
  ...
  <script type="text/javascript">
    SomeFunction();
  </script>
</body>

And, another options, is to consider using a JS framework which intrinsically does this:

// jQuery
$(document).ready( function () {
  SomeFunction();
});

If you can use jQuery, and I highly recommend you do, you would simply do

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

Otherwise, it is browser dependent. Assuming you have

var myTextArea = document.getElementById('myTextArea');

In most browsers you do

myTextArea.innerHTML = '';

But in Firefox, you do

myTextArea.innerText = '';

Figuring out what browser the user is using is left as an exercise for the reader. Unless you use jQuery, of course ;)

Edit: I take that back. Looks like support for .innerHTML on textarea's has improved. I tested in Chrome, Firefox and Internet Explorer, all of them cleared the textarea correctly.

Edit 2: And I just checked, if you use .val('') in jQuery, it just sets the .value property for textarea's. So .value should be fine.

This will detect any version of Firefox:

var isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox') > -1;

more specifically:

if(navigator.userAgent.toLowerCase().indexOf('firefox') > -1){
     // Do Firefox-related activities
}

You may want to consider using feature-detection ala Modernizr, or a related tool, to accomplish what you need.

The algorithm std::replace works per element on a given sequence (so it replaces elements with different elements, and can not replace it with nothing). But there is no empty character. If you want to remove elements from a sequence, the following elements have to be moved, and std::replace doesn't work like this.

You can try to use std::remove (together with std::erase) to achieve this.

str.erase(std::remove(str.begin(), str.end(), 'a'), str.end());

Initialize DataTable:

DataTable dt = new DataTable(); 
dt.Columns.Add("id", typeof(String)); 
dt.Columns.Add("name", typeof(String)); 
for (int i = 0; i < 5; i++)
{
    string index = i.ToString();
    dt.Rows.Add(new object[] { index, "name" + index });
}

Query itself:

IList<Class1> items = dt.AsEnumerable().Select(row => 
    new Class1
        {
            id = row.Field<string>("id"),
            name = row.Field<string>("name")
        }).ToList();

Off the top of my cat's head, make sure the div you're trying to center is not set to width: 100%.

If it is, then the rules set on the child divs are what will matter.

If you just want to remove any duplicate paths, I use this script I wrote a while back since I was having trouble with multiple perl5/bin paths:

#!/bin/bash
#
# path-cleanup
#
# This must be run as "source path-cleanup" or ". path-cleanup"
# so the current shell gets the changes.

pathlist=`echo $PATH | sed 's/:/\n/g' | uniq`

# echo "Starting PATH: $PATH"
# echo "pathlist: $pathlist"
unset PATH
# echo "After unset, PATH: $PATH"
for dir in $pathlist
do
    if test -d $dir ; then
        if test -z $PATH; then
            PATH=$dir
        else
            PATH=$PATH:$dir
        fi
    fi
done
export PATH
# echo "After loop, PATH: $PATH"

And I put it in my ~/.profile at the end. Since I use BASH almost exclusively, I haven't tried it in other shells.

Abstraction : Abstraction is the concept/technique used to identify what should be the external view of an object. Making only the required interface available.

Information Hiding : It is complementary to Abstraction, as through information hiding Abstraction is achieved. Hiding everything else but the external view.

Encapsulation : Is binding of data and related functions into a unit. It facilitates Abstraction and information hiding. Allowing features like member access to be applied on the unit to achieve Abstraction and Information hiding

@last_run_time is a 9.4. User-Defined Variables and last_run_time datetime one 13.6.4.1. Local Variable DECLARE Syntax, are different variables.

Try: SELECT last_run_time;

UPDATE

Example:

/* CODE FOR DEMONSTRATION PURPOSES */
DELIMITER $$

CREATE PROCEDURE `sp_test`()
BEGIN
    DECLARE current_procedure_name CHAR(60) DEFAULT 'accounts_general';
    DECLARE last_run_time DATETIME DEFAULT NULL;
    DECLARE current_run_time DATETIME DEFAULT NOW();

    -- Define the last run time
    SET last_run_time := (SELECT MAX(runtime) FROM dynamo.runtimes WHERE procedure_name = current_procedure_name);

    -- if there is no last run time found then use yesterday as starting point
    IF(last_run_time IS NULL) THEN
        SET last_run_time := DATE_SUB(NOW(), INTERVAL 1 DAY);
    END IF;

    SELECT last_run_time;

    -- Insert variables in table2
    INSERT INTO table2 (col0, col1, col2) VALUES (current_procedure_name, last_run_time, current_run_time);
END$$

DELIMITER ;

You can import single table using terminal line as given below. Here import single user table into specific database.

mysql -u root -p -D my_database_name < var/www/html/myproject/tbl_user.sql

Depending on which event you actually want to use (textbox change, or button click), you can try this:

HTML:

<input id="color" type="text" onchange="changeBackground(this);" />
<br />
<span id="coltext">This text should have the same color as you put in the text box</span>

JS:

function changeBackground(obj) {
    document.getElementById("coltext").style.color = obj.value;
}

DEMO: http://jsfiddle.net/6pLUh/

One minor problem with the button was that it was a submit button, in a form. When clicked, that submits the form (which ends up just reloading the page) and any changes from JavaScript are reset. Just using the onchange allows you to change the color based on the input.

As mentioned in other answers, It takes forever because the size of cocoapods master repo is huge. This time can be reduced using the following steps.

1) Create a private specs file path on your github repository. Provide this path https://github.com/yourpathForspecs.git' as a source in your podfile.

2) identify ALL the repositories You need and their dependencies( mentioned in the podspec.json file on cocoapods for these repositories) and get their podspec.json files from cocoapods. add these podspec.json files with their folder ( say the latest version folder for bolts) in this specs repository.

3) remove the source 'https://github.com/CocoaPods/Specs.git' in the podfile

4) pod update

This will take significantly less time as this requires fetching and downloading just the pods you need instead of whole cocoapods repository. In My case it reduced the pod update time from 15-20 mins on average to 3-4 mins at most.

using select-object for example:

Get-ADUser -Filter * -SearchBase 'OU=Users & Computers, DC=aaaaaaa, DC=com' -Properties DisplayName | select -expand displayname | Export-CSV "ADUsers.csv" 

In the for, you have an iteration, then for each element of that loop which probably is a scalar, has no index. When each element is an empty array, single variable, or scalar and not a list or array you cannot use indices.

You can also use:

Dim strPath As String = AppDomain.CurrentDomain.BaseDirectory

I have had the same problem in my project. I used an IntelliJ Idea 14 and Maven 8. And what I've noticed is that when I added a tomcat destination to to IDE it automaticly linked two jars from tomcat lib directory, they were servlet-api and jsp-api. Also I had them in my pom.xml. I killed a whole day trying to figure out why I'm getting java.lang.ClassNotFoundException: org.apache.jsp.index_jsp. And kewpiedoll99 is right. That is because there are dependency conflicts. When I added provided to those two jars in my pom.xml I found a happiness :)

Just a quick chime in here to hopefully help others... Especially with the newer version (since this is 2 years old)...

Instead of having some static fields defined in JS, you can also use the data-rule-* attributes. You can use built-in rules as well as custom rules.

See http://jqueryvalidation.org/documentation/#link-list-of-built-in-validation-methods for built-in rules.

Example:

<p><label>Email: <input type="text" name="email" id="email" data-rule-email="true" required></label></p>
<p><label>Confirm Email: <input type="text" name="email" id="email_confirm" data-rule-email="true" data-rule-equalTo="#email" required></label></p>

Note the data-rule-* attributes.

It has a -force parameter.????

The Global Assembly Cache (GAC) is a folder in Windows directory to store the .NET assemblies that are specifically designated to be shared by all applications executed on a system. Assemblies can be shared among multiple applications on the machine by registering them in global Assembly cache(GAC). GAC is a machine wide a local cache of assemblies maintained by the .NET Framework.

If both are not going to be modified (no adding/deleting items - modifying existing ones is fine as long as you pay heed to threading issues), you can simply pass around data.begin() + 100000 and data.begin() + 101000, and pretend that they are the begin() and end() of a smaller vector.

Or, since vector storage is guaranteed to be contiguous, you can simply pass around a 1000 item array:

T *arrayOfT = &data[0] + 100000;
size_t arrayOfTLength = 1000;

Both these techniques take constant time, but require that the length of data doesn't increase, triggering a reallocation.

I have fast solution. Just create a file ImageUtil.java

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.util.Base64;
import java.io.ByteArrayOutputStream;

public class ImageUtil
{
    public static Bitmap convert(String base64Str) throws IllegalArgumentException
    {
        byte[] decodedBytes = Base64.decode(
            base64Str.substring(base64Str.indexOf(",")  + 1),
            Base64.DEFAULT
        );

        return BitmapFactory.decodeByteArray(decodedBytes, 0, decodedBytes.length);
    }

    public static String convert(Bitmap bitmap)
    {
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        bitmap.compress(Bitmap.CompressFormat.PNG, 100, outputStream);

        return Base64.encodeToString(outputStream.toByteArray(), Base64.DEFAULT);
    }

}

Usage:

Bitmap bitmap = ImageUtil.convert(base64String);

or

String base64String = ImageUtil.convert(bitmap);

you just need to put this

($('#{{ form.email.id_for_label }}').attr("placeholder","Work email address"));

($('#{{ form.password1.id_for_label }}').attr("placeholder","Password"));

I agree with aks, however instead of using

return a - b;

You should use

return a > b ? 1 : a < b ? -1 : 0;

def recursive_copy_files(source_path, destination_path, override=False):
    """
    Recursive copies files from source  to destination directory.
    :param source_path: source directory
    :param destination_path: destination directory
    :param override if True all files will be overridden otherwise skip if file exist
    :return: count of copied files
    """
    files_count = 0
    if not os.path.exists(destination_path):
        os.mkdir(destination_path)
    items = glob.glob(source_path + '/*')
    for item in items:
        if os.path.isdir(item):
            path = os.path.join(destination_path, item.split('/')[-1])
            files_count += recursive_copy_files(source_path=item, destination_path=path, override=override)
        else:
            file = os.path.join(destination_path, item.split('/')[-1])
            if not os.path.exists(file) or override:
                shutil.copyfile(item, file)
                files_count += 1
    return files_count

Oracle 10g Express Edition ships with Oracle Application Express (Apex) built-in. You're running this in its SQL Commands window, which doesn't support SQL*Plus syntax.

That doesn't matter, because (as you have discovered) the BEGIN...END syntax does work in Apex.

The full list is:

DB, DW, DD, DQ, DT, DDQ, and DO (used to declare initialized data in the output file.)

See: http://www.tortall.net/projects/yasm/manual/html/nasm-pseudop.html

They can be invoked in a wide range of ways: (Note: for Visual-Studio - use "h" instead of "0x" syntax - eg: not 0x55 but 55h instead):

    db      0x55                ; just the byte 0x55
    db      0x55,0x56,0x57      ; three bytes in succession
    db      'a',0x55            ; character constants are OK
    db      'hello',13,10,'$'   ; so are string constants
    dw      0x1234              ; 0x34 0x12
    dw      'A'                 ; 0x41 0x00 (it's just a number)
    dw      'AB'                ; 0x41 0x42 (character constant)
    dw      'ABC'               ; 0x41 0x42 0x43 0x00 (string)
    dd      0x12345678          ; 0x78 0x56 0x34 0x12
    dq      0x1122334455667788  ; 0x88 0x77 0x66 0x55 0x44 0x33 0x22 0x11
    ddq     0x112233445566778899aabbccddeeff00
    ; 0x00 0xff 0xee 0xdd 0xcc 0xbb 0xaa 0x99
    ; 0x88 0x77 0x66 0x55 0x44 0x33 0x22 0x11
    do      0x112233445566778899aabbccddeeff00 ; same as previous
    dd      1.234567e20         ; floating-point constant
    dq      1.234567e20         ; double-precision float
    dt      1.234567e20         ; extended-precision float

DT does not accept numeric constants as operands, and DDQ does not accept float constants as operands. Any size larger than DD does not accept strings as operands.

This is what I've done to automatically add my local project node_modules/.bin path to PATH. In ~/.profile I added:

if [ -d "$PWD/node_modules/.bin" ]; then 
    PATH="$PWD/node_modules/.bin"
fi

Then reload your bash profile: source ~/.profile

You can also plot to a png file using gnuplot (which is free):

terminal commands

gnuplot> set title '<title>'
gnuplot> set ylabel '<yLabel>'
gnuplot> set xlabel '<xLabel>'
gnuplot> set grid
gnuplot> set term png
gnuplot> set output '<Output file name>.png'
gnuplot> plot '<fromfile.csv>'

note: you always need to give the right extension (.png here) at set output

Then it is also possible that the ouput is not lines, because your data is not continues. To fix this simply change the 'plot' line to:

plot '<Fromfile.csv>' with line lt -1 lw 2

More line editing options (dashes and line color ect.) at: http://gnuplot.sourceforge.net/demo_canvas/dashcolor.html

• gnuplot is available in most linux distros via the package manager (e.g. on an apt based distro, run apt-get install gnuplot)
• gnuplot is available in windows via Cygwin
• gnuplot is available on macOS via homebrew (run brew install gnuplot)

Just in case of someone has the same problem. I'am using vim with YouCompleteMe, failed to start ycmd with this error message, what I did is: export LC_CTYPE="en_US.UTF-8", the problem is gone.

Perhaps the most_common() method

Using Studio 3T for MongoDB, if I use .find({}, { _id: 0, roll: true }) it still return an array of objects with an empty _id property.

Using JavaScript map helped me to only retrieve the desired roll property as an array of string:

var rolls = db.student
  .find({ roll: { $gt: 70 } }) // query where role > 70
  .map(x => x.roll);           // return an array of role

Use following commands and install node v11.15.0:

npm install -g n

sudo n 11.15.0

will solve

ReferenceError: primordials is not defined in node

Referred from @Terje Norderhaug @Tom Corelis answers.

>>> import os
>>> print os.path.abspath(os.curdir)
C:\Python27
>>> os.chdir("..")
>>> print os.path.abspath(os.curdir)
C:\

What's wrong with just simply using a single, simple UPDATE statement??

UPDATE dbo.Coupon
SET NoofUses = (SELECT COUNT(*) FROM dbo.CouponUse WHERE Couponid = dbo.Coupon.ID)

That's all that's needed ! No messy and complicated cursor, no looping, no RBAR (row-by-agonizing-row) processing ..... just a nice, simple, clean set-based SQL statement.

That only means that an undefined column or parameter name was detected. The errror that DB2 gives should point what that may be:

DB2 SQL Error: SQLCODE=-206, SQLSTATE=42703, SQLERRMC=[THE_UNDEFINED_COLUMN_OR_PARAMETER_NAME], DRIVER=4.8.87

Double check your table definition. Maybe you just missed adding something.

I also tried google-ing this problem and saw this:

http://www.coderanch.com/t/515475/JDBC/databases/sql-insert-statement-giving-sqlcode

Faced with the same problem, I was able to solve it using only vanilla JS, but in an ugly way. To be more accurate, in a non-procedural way. I removed all my function parameters and return values and replaced them with global variables, and now the functions only serve as containers for lines of code - they're no longer logical units.

In my case, I also had the added complication of needing many confirmations (as a parser works through a text). My solution was to put everything up to the first confirmation in a JS function that ends by painting my custom popup on the screen, and then terminating.

Then the buttons in my popup call another function that uses the answer and then continues working (parsing) as usual up to the next confirmation, when it again paints the screen and then terminates. This second function is called as often as needed.

Both functions also recognize when the work is done - they do a little cleanup and then finish for good. The result is that I have complete control of the popups; the price I paid is in elegance.

It is possible to use the convert function here, but 36 characters are enough to hold the unique identifier value:

convert(nvarchar(36), requestID) as requestID

Use the moment.js library for time and date management.

import moment = require('moment');

const now = moment();

now.subtract(7, 'seconds'); // 7 seconds ago
now.subtract(7, 'days');    // 7 days and 7 seconds ago
now.subtract(7, 'months');  // 7 months, 7 days and 7 seconds ago
now.subtract(7, 'years');   // 7 years, 7 months, 7 days and 7 seconds ago
// because `now` has been mutated, it no longer represents the current time

I suggest you to have a ~/.mongorc.js file so you do not have to set the default size everytime.

 # execute in your terminal
 touch ~/.mongorc.js
 echo 'DBQuery.shellBatchSize = 100;' > ~/.mongorc.js
 # add one more line to always prettyprint the ouput
 echo 'DBQuery.prototype._prettyShell = true; ' >> ~/.mongorc.js

To know more about what else you can do, I suggest you to look at this article: http://mo.github.io/2017/01/22/mongo-db-tips-and-tricks.html

I ran into some issues because I wasn't aware that moment().endOf() mutates the input date, so I used this work around.

let thisMoment = moment();
let endOfMonth = moment(thisMoment).endOf('month');
let startOfMonth = moment(thisMoment).startOf('month');

A JAR file extension is .jar and is created with jar command from command prompt (like javac command is executed). Generally, a JAR file contains Java related resources like libraries, classes etc.JAR file is like winzip file except that Jar files are platform independent.

A WAR file is simply a JAR file but contains only Web related Java files like Servlets, JSP, HTML.

To execute a WAR file, a Web server or Web container is required, for example, Tomcat or Weblogic or Websphere. To execute a JAR file, simple JDK is enough.

Nowadays, it's better to use queues than threads (for those who don't use Laravel there are tons of other implementations out there like this).

The basic idea is, your original PHP script puts tasks or jobs into a queue. Then you have queue job workers running elsewhere, taking jobs out of the queue and starts processing them independently of the original PHP.

The advantages are:

1. Scalability - you can just add worker nodes to keep up with demand. In this way, tasks are run in parallel.
2. Reliability - modern queue managers such as RabbitMQ, ZeroMQ, Redis, etc, are made to be extremely reliable.

tinyMCE.triggerSave(); seems to be the correct answer, as it will sync changes from the iFrame to your textarea.

To add to the other answers though - why do you need this? I had been using tinyMCE for awhile and hadn't encountered issues with form fields not coming through. After some research, it turned out to be their "auto patching" of form element submits, which is on by default - http://www.tinymce.com/wiki.php/Configuration3x:submit_patch

Basically, they redefine submit to call triggerSave beforehand, but only if submit hasn't already been redefined by something else:

if (!n.submit.nodeType && !n.submit.length) {
    t.formElement = n;
    n._mceOldSubmit = n.submit;
    n.submit = function() {
        // Save all instances
        tinymce.triggerSave();
        t.isNotDirty = 1;

        return t.formElement._mceOldSubmit(t.formElement);
    };
}

So, if something else in your code (or another 3rd party library) is messing with submit, their "auto patching" won't work and it becomes necessary to call triggerSave.

EDIT: And actually in the OP's case, submit isn't being called at all. Since it's ajax'd, this is bypassing the "auto patching" described above.

Simple, standard library only. Gives timezone-aware datetime, unlike datetime.utcnow().

from datetime import datetime,timezone
now_utc = datetime.now(timezone.utc)

this prototype:

  int execlp(const char *file, const char *arg, ...);

Says that execlp ìs a variable argument function. It takes 2 const char *. The rest of the arguments, if any, are the additional arguments to hand over to program we want to run - also char * - all these are C strings (and the last argument must be a NULL pointer)

So, the file argument is the path name of an executable file to be executed. arg is the string we want to appear as argv[0] in the executable. By convention, argv[0] is just the file name of the executable, normally it's set to the same as file.

The ... are now the additional arguments to give to the executable.

Say you run this from a commandline/shell:

$ ls

That'd be execlp("ls", "ls", (char *)NULL); Or if you run

$ ls -l /

That'd be execlp("ls", "ls", "-l", "/", (char *)NULL);

So on to execlp("/bin/sh", ..., "ls -l /bin/??", ...);

Here you are going to the shell, /bin/sh , and you're giving the shell a command to execute. That command is "ls -l /bin/??". You can run that manually from a commandline/shell:

 $ ls -l /bin/??

Now, how do you run a shell and tell it to execute a command ? You open up the documentation/man page for your shell and read it.

What you want to run is:

$ /bin/sh -c "ls -l /bin/??"

This becomes

  execlp("/bin/sh","/bin/sh", "-c", "ls -l /bin/??", (char *)NULL);

Side note: The /bin/?? is doing pattern matching, this pattern matching is done by the shell, and it expands to all files under /bin/ with 2 characters. If you simply did

  execlp("ls","ls", "-l", "/bin/??", (char *)NULL);

Probably nothing would happen (unless there's a file actually named /bin/??) as there's no shell that interprets and expands /bin/??

There are many JSON libraries available in Java.

The most notorious ones are: Jackson, GSON, Genson, FastJson and org.json.

There are typically three things one should look at for choosing any library:

1. Performance
2. Ease of use (code is simple to write and legible) - that goes with features.
3. For mobile apps: dependency/jar size

Specifically for JSON libraries (and any serialization/deserialization libs), databinding is also usually of interest as it removes the need of writing boiler-plate code to pack/unpack the data.

For 1, see this benchmark: https://github.com/fabienrenaud/java-json-benchmark I did using JMH which compares (jackson, gson, genson, fastjson, org.json, jsonp) performance of serializers and deserializers using stream and databind APIs. For 2, you can find numerous examples on the Internet. The benchmark above can also be used as a source of examples...

Quick takeaway of the benchmark: Jackson performs 5 to 6 times better than org.json and more than twice better than GSON.

For your particular example, the following code decodes your json with jackson:

public class MyObj {

    private List<Interest> interests;

    static final class Interest {
        private String interestKey;
    }

    private static final ObjectMapper MAPPER = new ObjectMapper();
    public static void main(String[] args) throws IOException {
        MyObj o = JACKSON.readValue("{\"interests\": [{\"interestKey\": \"Dogs\"}, {\"interestKey\": \"Cats\" }]}", MyObj.class);
    }
}

Let me know if you have any questions.

This is the Best of all methods i came across

Clone just the repository's .git folder (excluding files as they are already in existing-dir) into an empty temporary directory

1. git clone --no-checkout repo-path-to-clone existing-dir/existing-dir.tmp //might want --no-hardlinks for cloning local repo

Move the .git folder to the directory with the files. This makes existing-dir a git repo.

2. mv existing-dir/existing-dir.tmp/.git existing-dir/

Delete the temporary directory

3. rmdir existing-dir/existing-dir.tmp

4. cd existing-dir

Git thinks all files are deleted, this reverts the state of the repo to HEAD.

WARNING: any local changes to the files will be lost.

5. git reset --mixed HEAD

AVD cant find SDK root, possibly because they are in different directories.Set your environment variables as shown in the screenshot below:

Put this in C2 and copy down

=IF(ISNA(VLOOKUP(A2,$B$2:$B$65535,1,FALSE)),"not in B","")

Then if the value in A isn't in B the cell in column C will say "not in B".

In macOS, I fixed this error by installing nodemon globally

npm install -g nodemon --save-dev 

and by adding the npm path to the bash_profile file. First, open bash_profile in nano by using the following command,

nano ~/.bash_profile

Second, add the following two lines to the bash_profile file (I use comments "##" which makes it bash_profile more readable)

## npm
export PATH=$PATH:~/npm

The concept for all these providers is much simpler than it initially appears. If you dissect a provider you and pull out the different parts it becomes very clear.

To put it simply each one of these providers is a specialized version of the other, in this order: provider > factory > value / constant / service.

So long the provider does what you can you can use the provider further down the chain which would result in writing less code. If it doesn't accomplish what you want you can go up the chain and you'll just have to write more code.

This image illustrates what I mean, in this image you will see the code for a provider, with the portions highlighted showing you which portions of the provider could be used to create a factory, value, etc instead.

_{(source: simplygoodcode.com)}

For more details and examples from the blog post where I got the image from go to: http://www.simplygoodcode.com/2015/11/the-difference-between-service-provider-and-factory-in-angularjs/

This can also be achieved with itertools.chain.from_iterable which will flatten the consecutive iterables:

import itertools
for item in itertools.chain.from_iterable(iterables):
    # do something with item    

$("html, body").scrollTop($(element).offset().top); // <-- Also integer can be used