Always check for the obvious too. I got this error once when I accidently grabbed the wrong resource for the server's add and remove action. It can be easy to overlook.

This worked for me.

window.location = window.location.pathname;

Tested on

• Chrome 44.0.2403
• IE edge
• Firefox 39.0

I can't imagine that anyone else reading this is a stupid as I was but just in case... I had accidentally removed "laravel/framework": "^5.6" from my composer.json when resolving merge conflicts.

I had the same problem when I wrote two upstreams in NGINX conf

upstream php_upstream {
    server unix:/var/run/php/my.site.sock;
    server 127.0.0.1:9000;
}

...

fastcgi_pass php_upstream;

but in /etc/php/7.3/fpm/pool.d/www.conf I listened the socket only

listen = /var/run/php/my.site.sock

So I need just socket, no any 127.0.0.1:9000, and I just removed IP+port upstream

upstream php_upstream {
    server unix:/var/run/php/my.site.sock;
}

This could be rewritten without an upstream

fastcgi_pass unix:/var/run/php/my.site.sock;

The key is in the quotes around the colon and &, i.e. rows(variable & ":" & variable).select

Adapt this:

Rows(x & ":" & y).select

where x and y are your variables.

Some other examples that may help you understand

Rows(x & ":" & x).select

Or

Rows((x+1) & ":" (x*3)).select

Or

Rows((x+2) & ":" & (y-3)).select

Hopefully you get the idea.

The file may be existing but may have a different path. Try writing the absolute path for the file.

Try os.listdir() function to check that atleast python sees the file.

Try it like this:

file1 = open(r'Drive:\Dir\recentlyUpdated.yaml')

I posted too soon however the ways to configure are given in below link

http://docs.aws.amazon.com/cli/latest/userguide/cli-chap-getting-started.html

and way to get access keys are given in below link

http://docs.aws.amazon.com/cli/latest/userguide/cli-chap-getting-set-up.html#cli-signup

Here's an alternate way of finding height. Add an additional attribute to your node called height:

class Node
{
data value; //data is a custom data type
node right;
node left;
int height;
}

Now, we'll do a simple breadth-first traversal of the tree, and keep updating the height value for each node:

int height (Node root)
{
Queue<Node> q = Queue<Node>();
Node lastnode;
//reset height
root.height = 0;

q.Enqueue(root);
while(q.Count > 0)
{
   lastnode = q.Dequeue();
   if (lastnode.left != null){
      lastnode.left.height = lastnode.height + 1; 
      q.Enqueue(lastnode.left);
   }

   if (lastnode.right != null){
      lastnode.right.height = lastnode.height + 1;
      q.Enqueue(lastnode.right);
   }
}
return lastnode.height; //this will return a 0-based height, so just a root has a height of 0
}

Cheers,

OK, there are few ways to do it, but I exclusively want focus on using store using Redux which makes your life much easier for these situations rather than give you a quick solution only for this case, using pure React will end up mess up in real big application and communicating between Components becomes harder and harder as the application grows...

So what Redux does for you?

Redux is like local storage in your application which can be used whenever you need data to be used in different places in your application...

Basically, Redux idea comes from flux originally, but with some fundamental changes including the concept of having one source of truth by creating only one store...

Look at the graph below to see some differences between Flux and Redux...

Consider applying Redux in your application from the start if your application needs communication between Components...

Also reading these words from Redux Documentation could be helpful to start with:

As the requirements for JavaScript single-page applications have become increasingly complicated, our code must manage more state than ever before. This state can include server responses and cached data, as well as locally created data that has not yet been persisted to the server. UI state is also increasing in complexity, as we need to manage active routes, selected tabs, spinners, pagination controls, and so on.

Managing this ever-changing state is hard. If a model can update another model, then a view can update a model, which updates another model, and this, in turn, might cause another view to update. At some point, you no longer understand what happens in your app as you have lost control over the when, why, and how of its state. When a system is opaque and non-deterministic, it's hard to reproduce bugs or add new features.

As if this wasn't bad enough, consider the new requirements becoming common in front-end product development. As developers, we are expected to handle optimistic updates, server-side rendering, fetching data before performing route transitions, and so on. We find ourselves trying to manage a complexity that we have never had to deal with before, and we inevitably ask the question: is it time to give up? The answer is no.

This complexity is difficult to handle as we're mixing two concepts that are very hard for the human mind to reason about: mutation and asynchronicity. I call them Mentos and Coke. Both can be great in separation, but together they create a mess. Libraries like React attempt to solve this problem in the view layer by removing both asynchrony and direct DOM manipulation. However, managing the state of your data is left up to you. This is where Redux enters.

Following in the steps of Flux, CQRS, and Event Sourcing, Redux attempts to make state mutations predictable by imposing certain restrictions on how and when updates can happen. These restrictions are reflected in the three principles of Redux.

You want something like the cex=1.5 argument to scale fonts 150 percent. But do see help(par) as there are also cex.lab, cex.axis, ...

Just in case you would need to delete a variable, you could use SETENV from Vincent Fatica available at http://barnyard.syr.edu/~vefatica. Not exactly recent ('98) but still working on Windows 7 x64.

Here's my approach to achieve this behavior.

For a more comprehensive solution involving ILookup<TKey, TElement>, check out my other answer.

public abstract class Lookup<TKey, TElement> : KeyedCollection<TKey, ICollection<TElement>>
{
  protected override TKey GetKeyForItem(ICollection<TElement> item) =>
    item
    .Select(b => GetKeyForItem(b))
    .Distinct()
    .SingleOrDefault();

  protected abstract TKey GetKeyForItem(TElement item);

  public void Add(TElement item)
  {
    var key = GetKeyForItem(item);
    if (Dictionary != null && Dictionary.TryGetValue(key, out var collection))
      collection.Add(item);
    else
      Add(new List<TElement> { item });
  }

  public void Remove(TElement item)
  {
    var key = GetKeyForItem(item);
    if (Dictionary != null && Dictionary.TryGetValue(key, out var collection))
    {
      collection.Remove(item);
      if (collection.Count == 0)
        Remove(key);
    }
  }
}

Usage:

public class Item
{
  public string Key { get; }
  public string Value { get; set; }
  public Item(string key, string value = null) { Key = key; Value = value; }
}

public class Lookup : Lookup<string, Item>
{
  protected override string GetKeyForItem(Item item) => item.Key;
}

static void Main(string[] args)
{
  var toRem = new Item("1", "different");
  var single = new Item("2", "single");
  var lookup = new Lookup()
  {
    new Item("1", "hello"),
    new Item("1", "hello2"),
    new Item(""),
    new Item("", "helloo"),
    toRem,
    single
  };

  lookup.Remove(toRem);
  lookup.Remove(single);
}

Note: the key must be immutable (or remove and re-add upon key-change).

The code you have is a white with low opacity.

If something white with a low opacity is above something black, you end up with a lighter shade of gray. Above red? Lighter red, etc. That is how opacity works.

Here is a simple demo.

If you want it to look 'more white', make it less opaque:

background:rgba(255,255,255, 0.9);

Demo

You can maintain a Map (for fast lookup) and List (for order) but a LinkedHashMap may be the simplest. You can also try a SortedMap e.g. TreeMap, which an have any order you specify.

:last is not part of the css spec, this is jQuery specific.

you should be looking for last-child

var first = div.querySelector('[move_id]:first-child');
var last  = div.querySelector('[move_id]:last-child');

There was some good code posted that solved the problem better than !a != !b

Note that I had to add the BOOL_DETAIL_OPEN/CLOSE so it would work on MSVC 2010

/* From: http://groups.google.com/group/comp.std.c++/msg/2ff60fa87e8b6aeb

   Proposed code    left-to-right?  sequence point?  bool args?  bool result?  ICE result?  Singular 'b'?
   --------------   --------------  ---------------  ---------- ------------  -----------  -------------
   a ^ b                  no              no             no          no           yes          yes
   a != b                 no              no             no          no           yes          yes
   (!a)!=(!b)             no              no             no          no           yes          yes
   my_xor_func(a,b)       no              no             yes         yes          no           yes
   a ? !b : b             yes             yes            no          no           yes          no
   a ? !b : !!b           yes             yes            no          no           yes          no
   [* see below]          yes             yes            yes         yes          yes          no
   (( a bool_xor b ))     yes             yes            yes         yes          yes          yes

   [* = a ? !static_cast<bool>(b) : static_cast<bool>(b)]

   But what is this funny "(( a bool_xor b ))"? Well, you can create some
   macros that allow you such a strange syntax. Note that the
   double-brackets are part of the syntax and cannot be removed! The set of
   three macros (plus two internal helper macros) also provides bool_and
   and bool_or. That given, what is it good for? We have && and || already,
   why do we need such a stupid syntax? Well, && and || can't guarantee
   that the arguments are converted to bool and that you get a bool result.
     Think "operator overloads". Here's how the macros look like:

   Note: BOOL_DETAIL_OPEN/CLOSE added to make it work on MSVC 2010
  */

#define BOOL_DETAIL_AND_HELPER(x) static_cast<bool>(x):false
#define BOOL_DETAIL_XOR_HELPER(x) !static_cast<bool>(x):static_cast<bool>(x)

#define BOOL_DETAIL_OPEN (
#define BOOL_DETAIL_CLOSE )

#define bool_and BOOL_DETAIL_CLOSE ? BOOL_DETAIL_AND_HELPER BOOL_DETAIL_OPEN
#define bool_or BOOL_DETAIL_CLOSE ? true:static_cast<bool> BOOL_DETAIL_OPEN
#define bool_xor BOOL_DETAIL_CLOSE ? BOOL_DETAIL_XOR_HELPER BOOL_DETAIL_OPEN

If you plan on constructing HashMaps with variable depth, use a recursive data structure.

Below is an implementation providing a sample interface:

class NestedMap<K, V> {

    private final HashMap<K, NestedMap> child;
    private V value;

    public NestedMap() {
        child = new HashMap<>();
        value = null;
    }

    public boolean hasChild(K k) {
        return this.child.containsKey(k);
    }

    public NestedMap<K, V> getChild(K k) {
        return this.child.get(k);
    }

    public void makeChild(K k) {
        this.child.put(k, new NestedMap());
    }

    public V getValue() {
        return value;
    }

    public void setValue(V v) {
        value = v;
    }
}

and example usage:

class NestedMapIllustration {
    public static void main(String[] args) {

        NestedMap<Character, String> m = new NestedMap<>();

        m.makeChild('f');
        m.getChild('f').makeChild('o');
        m.getChild('f').getChild('o').makeChild('o');
        m.getChild('f').getChild('o').getChild('o').setValue("bar");

        System.out.println(
            "nested element at 'f' -> 'o' -> 'o' is " +
            m.getChild('f').getChild('o').getChild('o').getValue());
    }
}

The equals( ) method and the == operator perform two different operations. The equals( ) method compares the characters inside a String object. The == operator compares two object references to see whether they refer to the same instance. The following program shows how two different String objects can contain the same characters, but references to these objects will not compare as equal:

// equals() vs ==
class EqualsNotEqualTo {
     public static void main(String args[]) {
          String s1 = "Hello";
          String s2 = new String(s1);
          System.out.println(s1 + " equals " + s2 + " -> " +
          s1.equals(s2));
          System.out.println(s1 + " == " + s2 + " -> " + (s1 == s2));
     }
}

The variable s1 refers to the String instance created by “Hello”. The object referred to by s2 is created with s1 as an initializer. Thus, the contents of the two String objects are identical, but they are distinct objects. This means that s1 and s2 do not refer to the same objects and are, therefore, not ==, as is shown here by the output of the preceding example:

Hello equals Hello -> true
Hello == Hello -> false

For me the error was misleading. I discovered the true error by testing the errant web service with SoapUI.

Modern solution

Flexbox was created for exactly these kind of problems:

#container {_x000D_
    height: 150px;/*Only for the demo.*/_x000D_
    background-color:green;/*Only for the demo.*/_x000D_
    display: flex;_x000D_
    justify-content: center;_x000D_
    align-items: flex-end;_x000D_
}

<div id="container">_x000D_
    <span>Text align to center bottom.</span>_x000D_
</div>

Old school solution

If you don't want to mess with table displays, then you can create a <div> inside a relatively positioned parent container, place it to the bottom with absolute positioning, then make it 100% wide, so you can text-align it to the center:

#container {_x000D_
    height: 150px;/*Only for the demo.*/_x000D_
    background-color:green;/*Only for the demo.*/_x000D_
    position: relative;_x000D_
}_x000D_
_x000D_
#text {_x000D_
    position: absolute;_x000D_
    bottom: 0;_x000D_
    width: 100%;_x000D_
    text-align: center;_x000D_
}

<div id="container">_x000D_
    <span id="text">Text align to center bottom.</span>_x000D_
</div>

Suppose you bound your combobox to a List<Person>

List<Person> pp = new List<Person>();
pp.Add(new Person() {id = 1, name="Steve"});
pp.Add(new Person() {id = 2, name="Mark"});
pp.Add(new Person() {id = 3, name="Charles"});

cbo1.DisplayMember = "name";
cbo1.ValueMember = "id";
cbo1.DataSource = pp;

At this point you cannot set the Text property as you like, but instead you need to add an item to your list before setting the datasource

pp.Insert(0, new Person() {id=-1, name="--SELECT--"});
cbo1.DisplayMember = "name";
cbo1.ValueMember = "id";
cbo1.DataSource = pp;
cbo1.SelectedIndex = 0;

Of course this means that you need to add a checking code when you try to use the info from the combobox

if(cbo1.SelectedValue != null && Convert.ToInt32(cbo1.SelectedValue) == -1)
    MessageBox.Show("Please select a person name");
else
    ...... 

The code is the same if you use a DataTable instead of a list. You need to add a fake row at the first position of the Rows collection of the datatable and set the initial index of the combobox to make things clear. The only thing you need to look at are the name of the datatable columns and which columns should contain a non null value before adding the row to the collection

In a table with three columns like ID, FirstName, LastName with ID,FirstName and LastName required you need to

DataRow row = datatable.NewRow();
row["ID"] = -1;
row["FirstName"] = "--Select--";    
row["LastName"] = "FakeAddress";
dataTable.Rows.InsertAt(row, 0);

Execute these commands in the terminal (excluding the lines with hashtags - they're comments):

# Deletes the Android Studio application
# Note that this may be different depending on what you named the application as, or whether you downloaded the preview version
rm -Rf /Applications/Android\ Studio.app
# Delete All Android Studio related preferences
# The asterisk here should target all folders/files beginning with the string before it
rm -Rf ~/Library/Preferences/AndroidStudio*
rm -Rf ~/Library/Preferences/Google/AndroidStudio*
# Deletes the Android Studio's plist file
rm -Rf ~/Library/Preferences/com.google.android.*
# Deletes the Android Emulator's plist file
rm -Rf ~/Library/Preferences/com.android.*
# Deletes mainly plugins (or at least according to what mine (Edric) contains)
rm -Rf ~/Library/Application\ Support/AndroidStudio*
rm -Rf ~/Library/Application\ Support/Google/AndroidStudio*
# Deletes all logs that Android Studio outputs
rm -Rf ~/Library/Logs/AndroidStudio*
rm -Rf ~/Library/Logs/Google/AndroidStudio*
# Deletes Android Studio's caches
rm -Rf ~/Library/Caches/AndroidStudio*
# Deletes older versions of Android Studio
rm -Rf ~/.AndroidStudio*

If you would like to delete all projects:

rm -Rf ~/AndroidStudioProjects

To remove gradle related files (caches & wrapper)

rm -Rf ~/.gradle

Use the below command to delete all Android Virtual Devices(AVDs) and keystores.

Note: This folder is used by other Android IDEs as well, so if you still using other IDE you may not want to delete this folder)

rm -Rf ~/.android

To delete Android SDK tools

rm -Rf ~/Library/Android*

Emulator Console Auth Token

rm -Rf ~/.emulator_console_auth_token

Thanks to those who commented/improved on this answer!

Notes

1. The flags for rm are case-sensitive¹ (as with most other commands), which means that the f flag must be in lower case. However, the r flag can also be capitalised.
2. The flags for rm can be either combined together or separated. They don't have to be combined.

What the flags indicate

1. The r flag indicates that the rm command should-

   attempt to remove the file hierarchy rooted in each file argument. - DESCRIPTION section on the manpage for rm (See man rm for more info)

2. The f flag indicates that the rm command should-

   attempt to remove the files without prompting for confirmation, regardless of the file's permissions. - DESCRIPTION section on the manpage for rm (See man rm for more info)

The problem here is in your interpretation of the article you link.

Equality

This article is about somebody that is having problems correctly defining the bool relationship operators.

The operator:

• Equality == and !=
• Relationship < > <= >=

These operators should return a bool as they are comparing two objects of the same type. It is usually easiest to define these operators as part of the class. This is because a class is automatically a friend of itself so objects of type Paragraph can examine each other (even each others private members).

There is an argument for making these free standing functions as this lets auto conversion convert both sides if they are not the same type, while member functions only allow the rhs to be auto converted. I find this a paper man argument as you don't really want auto conversion happening in the first place (usually). But if this is something you want (I don't recommend it) then making the comparators free standing can be advantageous.

Streaming

The stream operators:

• operator << output
• operator >> input

When you use these as stream operators (rather than binary shift) the first parameter is a stream. Since you do not have access to the stream object (its not yours to modify) these can not be member operators they have to be external to the class. Thus they must either be friends of the class or have access to a public method that will do the streaming for you.

It is also traditional for these objects to return a reference to a stream object so you can chain stream operations together.

#include <iostream>

class Paragraph
{
    public:
        explicit Paragraph(std::string const& init)
            :m_para(init)
        {}

        std::string const&  to_str() const
        {
            return m_para;
        }

        bool operator==(Paragraph const& rhs) const
        {
            return m_para == rhs.m_para;
        }
        bool operator!=(Paragraph const& rhs) const
        {
            // Define != operator in terms of the == operator
            return !(this->operator==(rhs));
        }
        bool operator<(Paragraph const& rhs) const
        {
            return  m_para < rhs.m_para;
        }
    private:
        friend std::ostream & operator<<(std::ostream &os, const Paragraph& p);
        std::string     m_para;
};

std::ostream & operator<<(std::ostream &os, const Paragraph& p)
{
    return os << p.to_str();
}


int main()
{
    Paragraph   p("Plop");
    Paragraph   q(p);

    std::cout << p << std::endl << (p == q) << std::endl;
}

1. Performance:

Assume your where clause is like this:

WHERE NAME='JON'

If the NAME column is of any type other than nvarchar or nchar, then you should not specify the N prefix. However, if the NAME column is of type nvarchar or nchar, then if you do not specify the N prefix, then 'JON' is treated as non-unicode. This means the data type of NAME column and string 'JON' are different and so SQL Server implicitly converts one operand’s type to the other. If the SQL Server converts the literal’s type to the column’s type then there is no issue, but if it does the other way then performance will get hurt because the column's index (if available) wont be used.

2. Character set:

If the column is of type nvarchar or nchar, then always use the prefix N while specifying the character string in the WHERE criteria/UPDATE/INSERT clause. If you do not do this and one of the characters in your string is unicode (like international characters - example - a) then it will fail or suffer data corruption.

Great question, and the answer is not a simple one. There is no "show me all .net core versions" command, but there's hope.

EDIT:

I'm not sure when it was added, but the info command now includes this information in its output. It will print out the installed runtimes and SDKs, as well as some other info:

dotnet --info

If you only want to see the SDKs: dotnet --list-sdks

If you only want to see installed runtimes: dotnet --list-runtimes

I'm on Windows, but I'd guess that would work on Mac or Linux as well with a current version.

Also, you can reference the .NET Core Download Archive to help you decipher the SDK versions.

OLDER INFORMATION: Everything below this point is old information, which is less relevant, but may still be useful.

See installed Runtimes:

Open C:\Program Files\dotnet\shared\Microsoft.NETCore.App in Windows Explorer

See installed SDKs:

Open C:\Program Files\dotnet\sdk in Windows Explorer

(Source for the locations: A developer's blog)

In addition, you can see the latest Runtime and SDK versions installed by issuing these commands at the command prompt:

dotnet Latest Runtime version is the first thing listed. DISCLAIMER: This no longer works, but may work for older versions.

dotnet --version Latest SDK version DISCLAIMER: Apparently the result of this may be affected by any global.json config files.

On macOS you could check .net core version by using below command.

ls /usr/local/share/dotnet/shared/Microsoft.NETCore.App/

On Ubuntu or Alpine:

ls /usr/share/dotnet/shared/Microsoft.NETCore.App/

It will list down the folder with installed version name.

@AtulVarma provided a very useful comment under the not-working accepted answer:

echo 'import myscript' | python manage.py shell

    <?php

    //create table

    /*

    --
    -- Database: `mydb`
    --

    -- --------------------------------------------------------

    --
    -- Table structure for table `tbl_user_data`
    --

    CREATE TABLE `tbl_user_data` (
      `attachment_id` int(11) NOT NULL,
      `attachment` varchar(200) NOT NULL
    ) ENGINE=InnoDB DEFAULT CHARSET=latin1;

    --
    -- Indexes for dumped tables
    --

    --
    -- Indexes for table `tbl_user_data`
    --
    ALTER TABLE `tbl_user_data`
      ADD PRIMARY KEY (`attachment_id`);

    --
    -- AUTO_INCREMENT for dumped tables
    --

    --
    -- AUTO_INCREMENT for table `tbl_user_data`
    --
    ALTER TABLE `tbl_user_data`
      MODIFY `attachment_id` int(11) NOT NULL AUTO_INCREMENT;

      */
    $servername = "localhost";
    $username = "root";
    $password = "";
    // Create connection
    $dbname = "myDB";
    // Create connection
    $conn = new mysqli($servername, $username, $password, $dbname);
    // Check connection
    if ($conn->connect_error) {
        die("Connection failed: " . $conn->connect_error);
    } 

    if(isset($_POST['submit'])){

      $fileName=$_FILES["resume"]["name"];
      $fileSize=$_FILES["resume"]["size"]/1024;
      $fileType=$_FILES["resume"]["type"];
      $fileTmpName=$_FILES["resume"]["tmp_name"];
      $statusMsg = '';
      $random=rand(1111,9999);
      $newFileName=$random.$fileName;

      //file upload path
      $targetDir = "resumeUpload/";
      $fileName = basename($_FILES["resume"]["name"]);
      $targetFilePath = $targetDir . $newFileName;
      $fileType = pathinfo($targetFilePath,PATHINFO_EXTENSION);

      if(!empty($_FILES["resume"]["name"])) {
          //allow certain file formats
          //$allowTypes = array('jpg','png','jpeg','gif','pdf','docx','doc');
          $allowTypes = array('pdf','docx','doc');
          if(in_array($fileType, $allowTypes)){
              //upload file to server
              if(move_uploaded_file($_FILES["resume"]["tmp_name"], $targetFilePath)){
                  $statusMsg = "The file ".$fileName. " has been uploaded.";
              }else{
                  $statusMsg = "Sorry, there was an error uploading your file.";
              }
          }else{
              $statusMsg = 'Sorry, only DOC,DOCX, & PDF files are allowed to upload.';
          }
      }else{
          $statusMsg = 'Please select a file to upload.';
      }

      //display status message
      echo $statusMsg;

      $sql="INSERT INTO `tbl_user_data` (`attachment_id`, `attachment`) VALUES
      ('NULL', '$newFileName')";

      if (mysqli_query($conn, $sql)) {

       $last_id = mysqli_insert_id($conn);
         echo "upload success";
      } else {
          echo "Error: " . $sql . "<br>" . mysqli_error($conn);
      }


    }

    ?>
    <form id="frm_upload" action="" method="post" enctype="multipart/form-data">
    Upload Resume:<input type="file" name="resume" id="resume">
    <button type="submit" name="submit">Apply  Now</button> 
    </form>

     //output sample[![check here for sample output][1]][1]

My case it solved i was using

@Html.DropDownList(model => model.TypeId ...)  

using

@Html.DropDownListFor(model => model.TypeId ...) 

will solve it

Background: Some answers suggested on this page (e.g., signif, options(digits=...)) do not guarantee that a certain number of decimals are displayed for an arbitrary number. I presume this is a design feature in R whereby good scientific practice involves showing a certain number of digits based on principles of "significant figures". However, in many domains (e.g., APA style, business reports) formatting requirements dictate that a certain number of decimal places are displayed. This is often done for consistency and standardisation purposes rather than being concerned with significant figures.

Solution:

The following code shows exactly two decimal places for the number x.

format(round(x, 2), nsmall = 2)

For example:

format(round(1.20, 2), nsmall = 2)
# [1] "1.20"
format(round(1, 2), nsmall = 2)
# [1] "1.00"
format(round(1.1234, 2), nsmall = 2)
# [1] "1.12"

A more general function is as follows where x is the number and k is the number of decimals to show. trimws removes any leading white space which can be useful if you have a vector of numbers.

specify_decimal <- function(x, k) trimws(format(round(x, k), nsmall=k))

E.g.,

specify_decimal(1234, 5)
# [1] "1234.00000"
specify_decimal(0.1234, 5)
# [1] "0.12340"

Use Math.Round and specify the number of decimal places.

Math.Round(pay,2);

Math.Round Method (Double, Int32)

Rounds a double-precision floating-point value to a specified number of fractional digits.

Or Math.Round Method (Decimal, Int32)

Rounds a decimal value to a specified number of fractional digits.

Craiglist is pretty stingy with their data , they even go out of their way to block scraping. If you use ruby here is a gem I wrote to help scrape craiglist data you can search through multiple cities , calculate average price ect...

I met the same problem before, also read the answers here, but doesn't found any satisfy solution can balance the compatibility, performance and well format output, the Jython can't work with extend C packages and slower than CPython. So finally I decided to invent the wheel myself, it took my 5 nights, I hope it can help you too: jpserve(https://github.com/johnhuang-cn/jpserve).

JPserve provides a simple way to call Python and exchange the result by well format JSON, few performance loss. The following is the sample code.

At first, start jpserve on Python side

>>> from jpserve.jpserve import JPServe
>>> serve = JPServe(("localhost", 8888))
>>> serve.start()

INFO:JPServe:JPServe starting...
INFO:JPServe:JPServe listening in localhost 8888

Then call Python from JAVA side:

PyServeContext.init("localhost", 8888);
PyExecutor executor = PyServeContext.getExecutor();
script = "a = 2\n"
    + "b = 3\n"
    + "_result_ = a * b";

PyResult rs = executor.exec(script);
System.out.println("Result: " + rs.getResult());

---
Result: 6

Simply put the path in double quotes in front of cd, Like this:

cd "C:\Users\MyComputer\Documents\Visual Studio 2019\Projects"

If you are using wamp stack, it will be fixed by open port in Firewall (Control Pannel). It work for my case (detail how to open port 80: https://tips.alocentral.com/open-tcp-port-80-in-windows-firewall/)

Not directly, no. You'd have to hand create it and put it in yourself. Assuming you are using a *nix box locally and are using utf, then tree will generate it nicely (I believe that is what generated the example you used above).

Assuming you mean the readme.md as the documentation target, then I think the only way you could automate it would be a git pre-commit hook that ran tree and embedded it into your readme file. You'd want to do a diff to make sure you only updated the readme if the output changed.

Otoh if you are maintaining seperate docs via github pages, then what you could do, is switch to using jekyll (or another generator) locally and pushing the static pages yourself. Then you could potentially implement the changes you want either as a plugin / shell script* / manual changes (if they won't vary much), or use the same method as above.

*If you integrate it into a commit hook, you can avoid adding any extra steps to changing your pages.

In my case, it was ReSharper.

Test if ReSharper

StackOverflow: How can I disable ReSharper in Visual Studio and enable it again?

Prevent ReSharper from reformatting code

StackOverflow: Is there a way to mark up code to tell ReSharper not to format it?

Update 2017-03-01

It was ReSharper in the end:

Update 2020-12-18

On the latest version of ReSharper, there are more options: untick everything on this page, and ensure all dropdowns are set to the equivalent of None.

ReSharper "typing assist" is like a 3-year-old trying to "help" build a card castle. A simple backspace or an enter key will (poorly) reformat entire blocks of code, requiring it to be undone or painfully formatted back to the original.

And if that is not enough, this is the bit that adds delays when typing so sometimes it feels like trying to run in skis.

5. solution

delete from emp where rowid in 
    (
      select  rid from
       (
         select rowid rid,rank() over (partition by emp_id order by rowid)rn from emp     
       )
     where rn > 1
    );

You can get the milliseconds since 1/1/1970 using such code:

private static DateTime JanFirst1970 = new DateTime(1970, 1, 1);
public static long getTime()
{
    return (long)((DateTime.Now.ToUniversalTime() - JanFirst1970).TotalMilliseconds + 0.5);
}

Code used basic nav bootstrap

<!--MENU CENTER`enter code here` RESPONSIVE -->_x000D_
_x000D_
  <div class="container-fluid">_x000D_
        <div class="container logo"><h1>LOGO</h1></div>_x000D_
      <nav class="navbar navbar-default menu">_x000D_
        <div class="container-fluid">_x000D_
          <!-- Brand and toggle get grouped for better mobile display -->_x000D_
          <div class="navbar-header">_x000D_
            <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#defaultNavbar2"><span class="sr-only">Toggle navigation</span><span class="icon-bar"></span><span class="icon-bar"></span><span class="icon-bar"></span></button>_x000D_
           </div>_x000D_
          <!-- Collect the nav links, forms, and other content for toggling -->_x000D_
          <div class="collapse navbar-collapse" id="defaultNavbar2">_x000D_
            <ul class="nav nav-justified" >_x000D_
              <li><a href="#">Home</a></li>_x000D_
              <li><a href="#">Link</a></li>_x000D_
              <li><a href="#">Link</a></li>_x000D_
              <li><a href="#">Link</a></li>_x000D_
              <li><a href="#">Link</a></li>_x000D_
              <li><a href="#">Link</a></li>_x000D_
              <li><a href="#">Link</a></li>_x000D_
            </ul>_x000D_
          </div>_x000D_
          <!-- /.navbar-collapse -->_x000D_
        </div>_x000D_
        <!-- /.container-fluid -->_x000D_
      </nav>_x000D_
    </div>_x000D_
  <!-- END MENU-->

app.factory('persistObject', function () {

        var persistObject = [];

        function set(objectName, data) {
            persistObject[objectName] = data;
        }
        function get(objectName) {
            return persistObject[objectName];
        }

        return {
            set: set,
            get: get
        }
    });

Fill it with data like this

persistObject.set('objectName', data); 

Get the object data like this

persistObject.get('objectName'); 

You should use the .End(xlup) but instead of using 65536 you might want to use:

sheetvar.Rows.Count

That way it works for Excel 2007 which I believe has more than 65536 rows

This will do it. apt-get install is idempotent.

sudo apt-get install command

My problem was solved by the following command

sudo apt-get install php5-mcrypt

I have

• PHP 5.3.10-1ubuntu3.4 with Suhosin-Patch (cli)
• Ubuntu Desktop 12.04
• Mysql 5.5

Important Answar
String name;
int roll;

public int compare(Object obj1,Object obj2) { // For Comparator interface
    return obj1.compareTo(obj1);
}

public int compareTo(Object obj1) { // For Comparable Interface
    return obj1.compareTo(obj);
}

Here in return obj1.compareTo(obj1) or return obj1.compareTo(obj) statement only take Object; primitive is not allowed. For Example

name.compareTo(obj1.getName()) // Correct Statement.

But

roll.compareTo(obj1.getRoll()) 
// Wrong Statement Compile Time Error Because roll 
// is not an Object Type, it is primitive type.

name is String Object so it worked. If you want to sort roll number of student than use below code.

public int compareTo(Object obj1) { // For Comparable Interface
    Student s = (Student) obj1;
    return rollno - s.getRollno();
}  

or

public int compare(Object obj1,Object obj2) { // For Comparator interface
    Student s1 = (Student) obj1;
    Student s2 = (Student) obj2;
    return s1.getRollno() - s2.getRollno();
}  

If you don't feel like aliassing you can also just prefix the tablenames.

This way you can better automate generation of your queries. Also, it's a best-practice to not use select * (it is obviously slower than just selecting the fields you need Furthermore, only explicitly name the fields you want to have.

SELECT
    news.id, news.title, news.author, news.posted, 
    users.id, users.name, users.registered 
FROM 
    news 
LEFT JOIN 
    users 
ON 
    news.user = user.id

I know this question is about visual studio 2015. I faced this issue with visual studio 2017. When searched on google I landed to this page. After looking at first 2,3 answers I realized this is the problem with vc++ installation. Installing the workload "Desktop development with c++" resolved the issue.

you can try adding

$db['db_debug'] = FALSE; 

in "your database file".php after that you can modify your database as you like.

You need to do a while loop to get the result from the SQL query, like this:

require_once('db.php');  
$sql="SELECT * FROM  modul1open WHERE idM1O>=(SELECT FLOOR( MAX( idM1O ) * RAND( ) )    
FROM modul1open) ORDER BY idM1O LIMIT 1";

$result = mysql_query($sql);

while($row = mysql_fetch_array($result, MYSQL_ASSOC)) {

    // If you want to display all results from the query at once:
    print_r($row);

    // If you want to display the results one by one
    echo $row['column1'];
    echo $row['column2']; // etc..

}

Also I would strongly recommend not using mysql_* since it's deprecated. Instead use the mysqli or PDO extension. You can read more about that here.

The choice command is not available everywhere. With newer Windows versions, the set command has the /p option you can get user input

SET /P variable=[promptString]

see set /? for more info

if it's too long for one page, use the longtable package. and if it's too wide for the page, use p{width} in place of l,r, or c for the column specifier. you can also go smaller than \small, i.e. \footnotesize and \tiny. I would consult the setspace package for options on how to remove the double space, though it's probably \singlespace or something like that.

TLDR:

- You can't hash a list, a set, nor a dict to put that into sets

- You can hash a tuple to put it into a set.

Example:

>>> {1, 2, [3, 4]}
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: unhashable type: 'list'

>>> {1, 2, (3, 4)}
set([1, 2, (3, 4)])

Note that hashing is somehow recursive and the above holds true for nested items:

>>> {1, 2, 3, (4, [2, 3])}
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: unhashable type: 'list'

Dict keys also are hashable, so the above holds for dict keys too.

Sometimes something strange happens and using Visual Studio to automatically restore doesn't work. In that case you can use the NuGet Package Manager Console. That is opened within Visual Studio from Tools -> NuGet Package Manager -> Package Manager Console. The commands within the console are simple. And to get context help while typing a command just press the button and it will give you all options that start with the letters you're typing. So if a package isn't installed, for example log4net, type the following command:

Install-Package log4net

You can do a whole lot more, like specify the version to install, update a package, uninstall a package, etc.

I had to use the console to help me when Visual Studio was acting like a weirdo.

I think you can use REGEXP instead of LIKE

SELECT trecord FROM `tbl` WHERE (trecord REGEXP '^ALA[0-9]')

Recently, I made performance improvements for a function that checks letters in a string with the help of this page.

I figured out that the Solutions with regex are 30 times slower than the ones with the Char.IsLetterOrDigit check.

We were not sure that those Letters or Digits include and we were in need of only Latin characters so implemented our function based on the decompiled version of Char.IsLetterOrDigit function.

Here is our solution:

internal static bool CheckAllowedChars(char uc)
    {
        switch (uc)
        {
            case '-':
            case '.':
            case 'A':
            case 'B':
            case 'C':
            case 'D':
            case 'E':
            case 'F':
            case 'G':
            case 'H':
            case 'I':
            case 'J':
            case 'K':
            case 'L':
            case 'M':
            case 'N':
            case 'O':
            case 'P':
            case 'Q':
            case 'R':
            case 'S':
            case 'T':
            case 'U':
            case 'V':
            case 'W':
            case 'X':
            case 'Y':
            case 'Z':
            case '0':
            case '1':
            case '2':
            case '3':
            case '4':
            case '5':
            case '6':
            case '7':
            case '8':
            case '9':
                return true;
            default:
                return false;
        }
    }

And the usage is like this:

 if( logicalId.All(c => CheckAllowedChars(c)))
 { // Do your stuff here.. }

You can use Sass to control min and max font sizes. Here is a brilliant solution by Eduardo Boucas.

https://eduardoboucas.com/blog/2015/06/18/viewport-sized-typography-with-minimum-and-maximum-sizes.html

@mixin responsive-font($responsive, $min, $max: false, $fallback: false) {
  $responsive-unitless: $responsive / ($responsive - $responsive + 1);
  $dimension: if(unit($responsive) == 'vh', 'height', 'width');
  $min-breakpoint: $min / $responsive-unitless * 100;

  @media (max-#{$dimension}: #{$min-breakpoint}) {
    font-size: $min;
  }

  @if $max {
    $max-breakpoint: $max / $responsive-unitless * 100;

    @media (min-#{$dimension}: #{$max-breakpoint}) {
      font-size: $max;
    }
  }

  @if $fallback {
    font-size: $fallback;
  }

  font-size: $responsive;
}

.limit-min {
  @include responsive-font(3vw, 20px);
}

.limit-min-max {
  @include responsive-font(3vw, 20px, 50px);
}

If you want that all normal output of your Batch script be silent (like in your example), the easiest way to do that is to run the Batch file with a redirection:

C:\Temp> test.bat >nul

This method does not require to modify a single line in the script and it still show error messages in the screen. To supress all the output, including error messages:

C:\Temp> test.bat >nul 2>&1

If your script have lines that produce output you want to appear in screen, perhaps will be simpler to add redirection to those lineas instead of all the lines you want to keep silent:

@ECHO OFF
SET scriptDirectory=%~dp0
COPY %scriptDirectory%test.bat %scriptDirectory%test2.bat
FOR /F %%f IN ('dir /B "%scriptDirectory%*.noext"') DO (
del "%scriptDirectory%%%f"
)
ECHO
REM Next line DO appear in the screen
ECHO Script completed >con

Antonio

I think this other Stack Overflow answer would solve your problem: How do I run a bat file in the background from another bat file?

Basically, you use the /B and /C options:

START /B CMD /C CALL "foo.bat" [args [...]] >NUL 2>&1

if you are using for certain text field then use the class

<style>
  .inputForm{
      border-radius:5px;
      -moz-border-radius:5px;
      -webkit-border-radius:5px;
   }
</style>

and in html code use

 <input type="text" class="inputForm">

or if u want to do this for all the input type text field means use

<style>
    input[type="text"]{
      border-radius:5px;
      -moz-border-radius:5px;
      -webkit-border-radius:5px;
    }
 </style>

and in html code

<input type="text" name="name">

You can always refer to resources in your application directly by their JNDI name as configured in the container, but if you do so, essentially you are wiring the container-specific name into your code. This has some disadvantages, for example, if you'll ever want to change the name later for some reason, you'll need to update all the references in all your applications, and then rebuild and redeploy them.

<resource-ref> introduces another layer of indirection: you specify the name you want to use in the web.xml, and, depending on the container, provide a binding in a container-specific configuration file.

So here's what happens: let's say you want to lookup the java:comp/env/jdbc/primaryDB name. The container finds that web.xml has a <resource-ref> element for jdbc/primaryDB, so it will look into the container-specific configuration, that contains something similar to the following:

<resource-ref>
  <res-ref-name>jdbc/primaryDB</res-ref-name>
  <jndi-name>jdbc/PrimaryDBInTheContainer</jndi-name>
</resource-ref>

Finally, it returns the object registered under the name of jdbc/PrimaryDBInTheContainer.

The idea is that specifying resources in the web.xml has the advantage of separating the developer role from the deployer role. In other words, as a developer, you don't have to know what your required resources are actually called in production, and as the guy deploying the application, you will have a nice list of names to map to real resources.

Your Hash key (primary of sort) has to be unique (unless you have a range like stated by others).

In your case, to query your table you should have a secondary index.

|  ID  | DataID | Created | Data |
|------+--------+---------+------|
| hash | xxxxx  | 1234567 | blah |

Your Hash Key is ID Your secondary index is defined as: DataID-Created-index (that's the name that DynamoDB will use)

Then, you can make a query like this:

var params = {
    TableName: "Table",
    IndexName: "DataID-Created-index",
    KeyConditionExpression: "DataID = :v_ID AND Created > :v_created",
    ExpressionAttributeValues: {":v_ID": {S: "some_id"},
                                ":v_created": {N: "timestamp"}
    },
    ProjectionExpression: "ID, DataID, Created, Data"
};

ddb.query(params, function(err, data) {
    if (err) 
        console.log(err);
    else {
        data.Items.sort(function(a, b) {
            return parseFloat(a.Created.N) - parseFloat(b.Created.N);
        });
        // More code here
    }
});

Essentially your query looks like:

SELECT * FROM TABLE WHERE DataID = "some_id" AND Created > timestamp;

The secondary Index will increase the read/write capacity units required so you need to consider that. It still is a lot better than doing a scan, which will be costly in reads and in time (and is limited to 100 items I believe).

This may not be the best way of doing it but for someone used to RD (I'm also used to SQL) it's the fastest way to get productive. Since there is no constraints in regards to schema, you can whip up something that works and once you have the bandwidth to work on the most efficient way, you can change things around.

I think all you need to do for your function is just add PtrSafe: i.e. the first line of your first function should look like this:

Private Declare PtrSafe Function swe_azalt Lib "swedll32.dll" ......

String[] string=new String[60];
System.out.println(string.length);

it is initialization and getting the STRING LENGTH code in very simple way for beginners

You can test only specific file with the Angular CLI (the ng command) like this:

ng test --main ./path/to/test.ts

Further docs are at https://angular.io/cli/test

Note that while this works for standalone library files, it will not work for angular components/services/etc. This is because angular files have dependencies on other files (namely src/test.ts in Angular 7). Sadly the --main flag doesn't take multiple arguments.

Add

<form target="_blank" ...></form>

or

form.setAttribute("target", "_blank");

to your form's definition.

Surround it with an \mbox{}

Insert date in the following format yyyy-MM-dd example,

INSERT INTO `PROGETTO`.`ALBERGO`(`ID`, `nome`, `viale`, `num_civico`, `data_apertura`, `data_chiusura`, `orario_apertura`, `orario_chiusura`, `posti_liberi`, `costo_intero`, `costo_ridotto`, `stelle`, `telefono`, `mail`, `web`, `Nome-paese`, `Comune`) 
VALUES(0, 'Hotel Centrale', 'Via Passo Rolle', '74', '2012-05-01', '2012-09-31', '06:30', '24:00', 80, 50, 25, 3, '43968083', '[email protected]', 'http://www.hcentrale.it/', 'Trento', 'TN')

i've been with this issue using elementary OS loki. For like one day and i solved it restarting the adb using this command:

./adb kill-server

and

./adb start-server

You need to be in the Sdk folder >Platform Tools

Now, restart your phone this will restart all the process in your phone.

And that's how i fixed it.

With Java 7, one can use ThreadLocalRandom.

A random number generator isolated to the current thread. Like the global Random generator used by the Math class, a ThreadLocalRandom is initialized with an internally generated seed that may not otherwise be modified. When applicable, use of ThreadLocalRandom rather than shared Random objects in concurrent programs will typically encounter much less overhead and contention. Use of ThreadLocalRandom is particularly appropriate when multiple tasks (for example, each a ForkJoinTask) use random numbers in parallel in thread pools.

public static int getRandomElement(int[] arr){
    return arr[ThreadLocalRandom.current().nextInt(arr.length)];
}

//Example Usage:
int[] nums = {1, 2, 3, 4};
int randNum = getRandomElement(nums);
System.out.println(randNum);

A generic version can also be written, but it will not work for primitive arrays.

public static <T> T getRandomElement(T[] arr){
   return arr[ThreadLocalRandom.current().nextInt(arr.length)];
}

//Example Usage:
String[] strs = {"aa", "bb", "cc"};
String randStr = getRandomElement(strs);
System.out.println(randStr);

I think the answer you are after is implied (if not stated) by Vinko's answer, though it is not spelled out simply. To distinguish whether VAR is set but empty or not set, you can use:

if [ -z "${VAR+xxx}" ]; then echo VAR is not set at all; fi
if [ -z "$VAR" ] && [ "${VAR+xxx}" = "xxx" ]; then echo VAR is set but empty; fi

You probably can combine the two tests on the second line into one with:

if [ -z "$VAR" -a "${VAR+xxx}" = "xxx" ]; then echo VAR is set but empty; fi

However, if you read the documentation for Autoconf, you'll find that they do not recommend combining terms with '-a' and do recommend using separate simple tests combined with &&. I've not encountered a system where there is a problem; that doesn't mean they didn't used to exist (but they are probably extremely rare these days, even if they weren't as rare in the distant past).

You can find the details of these, and other related shell parameter expansions, the test or [ command and conditional expressions in the Bash manual.

I was recently asked by email about this answer with the question:

You use two tests, and I understand the second one well, but not the first one. More precisely I don't understand the need for variable expansion

if [ -z "${VAR+xxx}" ]; then echo VAR is not set at all; fi

Wouldn't this accomplish the same?

if [ -z "${VAR}" ]; then echo VAR is not set at all; fi

Fair question - the answer is 'No, your simpler alternative does not do the same thing'.

Suppose I write this before your test:

VAR=

Your test will say "VAR is not set at all", but mine will say (by implication because it echoes nothing) "VAR is set but its value might be empty". Try this script:

(
unset VAR
if [ -z "${VAR+xxx}" ]; then echo JL:1 VAR is not set at all; fi
if [ -z "${VAR}" ];     then echo MP:1 VAR is not set at all; fi
VAR=
if [ -z "${VAR+xxx}" ]; then echo JL:2 VAR is not set at all; fi
if [ -z "${VAR}" ];     then echo MP:2 VAR is not set at all; fi
)

The output is:

JL:1 VAR is not set at all
MP:1 VAR is not set at all
MP:2 VAR is not set at all

In the second pair of tests, the variable is set, but it is set to the empty value. This is the distinction that the ${VAR=value} and ${VAR:=value} notations make. Ditto for ${VAR-value} and ${VAR:-value}, and ${VAR+value} and ${VAR:+value}, and so on.

As Gili points out in his answer, if you run bash with the set -o nounset option, then the basic answer above fails with unbound variable. It is easily remedied:

if [ -z "${VAR+xxx}" ]; then echo VAR is not set at all; fi
if [ -z "${VAR-}" ] && [ "${VAR+xxx}" = "xxx" ]; then echo VAR is set but empty; fi

Or you could cancel the set -o nounset option with set +u (set -u being equivalent to set -o nounset).

There are two categories as follows

1. Core Java
2. Java EE

Core java is a language basics. For example (Data structures, Semantics..etc) https://malalanayake.wordpress.com/category/java/data-structures/

But if you see the Java EE you can see the Sevlet, JSP, JSF all the web technologies and the patterns. https://malalanayake.wordpress.com/2014/10/10/jsp-servlet-scope-variables-and-init-parameters/

The question isn't clear - is this for an alert on page load? You shouldn't see any alert dialogues when using Selenium, as it replaces alert() with its own version which just captures the message given for verification.

Selenium doesn't support alert() on page load, as it needs to patch the function in the window under test with its own version.

If you can't get rid of onload alerts from the application under test, you should look into using GUI automation to click the popups which are generated, e.g. AutoIT if you're on Windows.

First you compile the regex, then you have to use it with match, find, or some other method to actually run it against some input.

import os
import re
import shutil

def test():
    os.chdir("C:/Users/David/Desktop/Test/MyFiles")
    files = os.listdir(".")
    os.mkdir("C:/Users/David/Desktop/Test/MyFiles2")
    pattern = re.compile(regex_txt, re.IGNORECASE)
    for x in (files):
        with open((x), 'r') as input_file:
            for line in input_file:
                if pattern.search(line):
                    shutil.copy(x, "C:/Users/David/Desktop/Test/MyFiles2")
                    break

Found one solution for WIFI (works for Android 4.3, 4.4):

1. Connect to WIFI network (e.g. 'Alex')
2. Settings->WIFI
3. Long tap on connected network's name (e.g. on 'Alex')
4. Modify network config-> Show advanced options
5. Set proxy settings

If we want the strict type safety and scoped enum, using enum class is good in C++11.

If we had to work in C++98, we can using the advice given by InitializeSahib,San to enable the scoped enum.

If we also want the strict type safety, the follow code can implement somthing like enum.

#include <iostream>
class Color
{
public:
    static Color RED()
    {
        return Color(0);
    }
    static Color BLUE()
    {
        return Color(1);
    }
    bool operator==(const Color &rhs) const
    {
        return this->value == rhs.value;
    }
    bool operator!=(const Color &rhs) const
    {
        return !(*this == rhs);
    }

private:
    explicit Color(int value_) : value(value_) {}
    int value;
};

int main()
{
    Color color = Color::RED();
    if (color == Color::RED())
    {
        std::cout << "red" << std::endl;
    }
    return 0;
}

The code is modified from the class Month example in book Effective C++ 3rd: Item 18

It should be:

document.getElementById("placehere").appendChild(elem);

And place your div before your javascript, because if you don't, the javascript executes before the div exists. Or wait for it to load. So your code looks like this:

<html>

<body>
<script type="text/javascript">
window.onload=function(){
var elem = document.createElement("img");
elem.setAttribute("src", "http://img.zohostatic.com/discussions/v1/images/defaultPhoto.png");
elem.setAttribute("height", "768");
elem.setAttribute("width", "1024");
elem.setAttribute("alt", "Flower");
document.getElementById("placehere").appendChild(elem);
}
</script>
<div id="placehere">

</div>

</body>
</html>

To prove my point, see this with the onload and this without the onload. Fire up the console and you'll find an error stating that the div doesn't exist or cannot find appendChild method of null.

I think you can always try the Ctrl + Shift + A to find the action/command you need.
Here you can try to press Ctrl + Shift + A and input «test» to find the command.

how about:

scope.$watch(function() { 
   return { 
      a: thing-one, 
      b: thing-two, 
      c: red-fish, 
      d: blue-fish 
   }; 
}, listener...);

Create a File object, passing the directory path to the constructor. Use the listFiles() to retrieve an array of File objects for each file in the directory, and then call the getName() method to get the filename.

List<String> results = new ArrayList<String>();


File[] files = new File("/path/to/the/directory").listFiles();
//If this pathname does not denote a directory, then listFiles() returns null. 

for (File file : files) {
    if (file.isFile()) {
        results.add(file.getName());
    }
}

Use std::remove_if algorithm.

Edit:
Work with collections should be like:

1. prepare collection.
2. process collection.

Life will be easier if you won't mix this steps.

1. std::remove_if. or list::remove_if ( if you know that you work with list and not with the TCollection )
2. std::for_each

On submitting, you would get an array as if created like this:

$_POST['topdiameter'] = array( 'first value', 'second value' );
$_POST['bottomdiameter'] = array( 'first value', 'second value' );

However, I would suggest changing your form names to this format instead:

name="diameters[0][top]"
name="diameters[0][bottom]"
name="diameters[1][top]"
name="diameters[1][bottom]"
...

Using that format, it's much easier to loop through the values.

if ( isset( $_POST['diameters'] ) )
{
    echo '<table>';
    foreach ( $_POST['diameters'] as $diam )
    {
        // here you have access to $diam['top'] and $diam['bottom']
        echo '<tr>';
        echo '  <td>', $diam['top'], '</td>';
        echo '  <td>', $diam['bottom'], '</td>';
        echo '</tr>';
    }
    echo '</table>';
}

Here you are :

echo "Body" | mailx -r "FROM_EMAIL" -s "SUBJECT" "To_EMAIL"

PS. Body and subject should be kept within double quotes. Remove quotes from FROM_EMAIL and To_EMAIL while substituting email addresses.

If you don't want any decimals when the resulting decimals are all zeroes, something like this would work:

String fixedDecimals(double d, int decimals, {bool removeZeroDecimals = true}){
  double mod = pow(10.0, decimals);
  double result = ((d * mod).round().toDouble() / mod);
  if( removeZeroDecimals && result - (result.truncate()) == 0.0 ) decimals = 0;
  return result.toStringAsFixed(decimals);
}

This will simply output 9 instead of 9.00 if the input is 9.004 and you want 2 decimals.

You can use System Color (18.2) values, introduced with CSS 2.0, but deprecated in CSS 3.

a:link, a:hover, a:active { color: WindowText; }

That way your anchor links will have the same color as normal document text on this system.

Easiest modern method: Alt+Enter on

private static final long serialVersionUID = ;

IntelliJ will underline the space after the =. put your cursor on it and hit alt+Enter (Option+Enter on Mac). You'll get a popover that says "Randomly Change serialVersionUID Initializer". Just hit enter, and it'll populate that space with a random long.

You need to make sure that node is in your PATH. To set up your path, this out.

Make sure that the directory that has node.exe is in your PATH. Then you should be able to run node path_to_js_file.js.

For a good "Hello World" example, check out: http://howtonode.org/hello-node

For Visual Studio 2017

Find "References" in Solution explorer

Right click "References"

Choose "Add Reference..."

Find "Presentation.Core" list and check checkbox

Click OK

You can use also this without creating additional variables nor copying the data in the memory like foreach() does.

while (false !== (list($item, $values) = each($array)))
{
    ...
}

You're looking for os.path.isdir, or os.path.exists if you don't care whether it's a file or a directory:

>>> import os
>>> os.path.isdir('new_folder')
True
>>> os.path.exists(os.path.join(os.getcwd(), 'new_folder', 'file.txt'))
False

Alternatively, you can use pathlib:

 >>> from pathlib import Path
 >>> Path('new_folder').is_dir()
 True
 >>> (Path.cwd() / 'new_folder' / 'file.txt').exists()
 False

This is the correct answer. It will refresh the previous page.

window.location=document.referrer;

By CSS specifications, browsers may or may not use information about default attributes; mostly the don’t. The relevant clause in the CSS 2.1 spec is 5.8.2 Default attribute values in DTDs. In CSS 3 Selectors, it’s clause 6.3.4, with the same name. It recommends: “Selectors should be designed so that they work whether or not the default values are included in the document tree.”

It is generally best to explicitly specify essential attributes such as type=text instead of defaulting them. The reason is that there is no simple reliable way to refer to the input elements with defaulted type attribute.

Change the wrapping from "onload" to "No wrap - in <body>"

The function defined has a different scope.

When a fragment is moved to the backstack, it isn't destroyed. All the instance variables remain there. So this is the place to save your data. In onActivityCreated you check the following conditions:

1. Is the bundle != null? If yes, that's where the data is saved (probably orientation change).
2. Is there data saved in instance variables? If yes, restore your state from them (or maybe do nothing, because everything is as it should be).
3. Otherwise your fragment is shown for the first time, create everything anew.

Edit: Here's an example

public class ExampleFragment extends Fragment {
    private List<String> myData;

    @Override
    public void onSaveInstanceState(final Bundle outState) {
        super.onSaveInstanceState(outState);
        outState.putSerializable("list", (Serializable) myData);
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);

        if (savedInstanceState != null) {
            //probably orientation change
            myData = (List<String>) savedInstanceState.getSerializable("list");
        } else {
            if (myData != null) {
                //returning from backstack, data is fine, do nothing
            } else {
                //newly created, compute data
                myData = computeData();
            }
        }
    }
}

Just try $('.handle').css('left', '300px');

This might be useful for someone else: Using this sample html

<div class="ParentDiv">
    <label for="label">labelName</label>
    <input type="button" value="elementToSelect">
</div>
<div class="DontSelect">
    <label for="animal">pig</label>
    <input type="button" value="elementToSelect">
</div>

If for example, I want to select an element in the same section (e.g div) as a label, you can use this

//label[contains(., 'labelName')]/parent::*//input[@value='elementToSelect'] 

This just means, look for a label (it could anything like a, h2) called labelName. Navigate to the parent of that label (i.e. div class="ParentDiv"). Search within the descendants of that parent to find any child element with the value of elementToSelect. With this, it will not select the second elementToSelect with DontSelect div as parent.

The trick is that you can reduce search areas for an element by navigating to the parent first and then searching descendant of that parent for the element you need. Other Syntax like following-sibling::h2 can also be used in some cases. This means the sibling following element h2. This will work for elements at the same level, having the same parent.

One reason to use object over iframe is that object re-sizes the embedded content to fit the object dimensions. most notable on safari in iPhone 4s where screen width is 320px and the html from the embedded URL may set dimensions greater.

class Test
{
    Dictionary<int, string> entities;

    public string GetEntity(int code)
    {
        // java's get method returns null when the key has no mapping
        // so we'll do the same

        string val;
        if (entities.TryGetValue(code, out val))
            return val;
        else
            return null;
    }
}

(.*) instead of (.)* would be a start. The latter will only capture the last character on the line.

Also, no need to escape the :.

You can do this:

create type number_tab is table of number;

select * from table (number_tab(1,2,3,4,5,6));

The column is given the name COLUMN_VALUE by Oracle, so this works too:

select column_value from table (number_tab(1,2,3,4,5,6));

Use this syntax to delete the rows also to redirect to the homepage (To avoid page load errors) :

def delete_all(self):
  Reporter.objects.all().delete()
  return HttpResponseRedirect('/')

By turning them into integers instead:

percent = (int(pyc) / int(tpy)) * 100;

In python 3, the input() function returns a string. Always. This is a change from Python 2; the raw_input() function was renamed to input().

Here is my simple solution:

1 - Define your fragment

public class MyFragment extends Fragment {

    private String parameter;

    public MyFragment() {
    }

    public void setParameter(String parameter) {
        this.parameter = parameter;
    } 
}

2 - Create your new fragment and populate the parameter

    myfragment = new MyFragment();
    myfragment.setParameter("here the value of my parameter");

3 - Enjoy it!

Obviously you can change the type and the number of parameters. Quick and easy.

I believe it needs to be done in a single query batch. Basically, the GO statements are breaking your commands into multiple batches and that is causing the issue. Change it to this:

SET IDENTITY_INSERT tbl_content ON
/* GO */

...insert command...

SET IDENTITY_INSERT tbl_content OFF
GO

I made a quick project in visual studio 2008 for a .net 3.5 C# windows form application and was able to create the following code. I found events for both the enter and leave methods.

In the InitializeComponent() function. I added the event handler using the Visual Studio designer.

this.button1.MouseLeave += new System.EventHandler( this.button1_MouseLeave );
this.button1.MouseEnter += new System.EventHandler( this.button1_MouseEnter );

In the button event handler methods set the background images.

/// <summary>
/// Handles the MouseEnter event of the button1 control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
private void button1_MouseEnter( object sender, EventArgs e )
{
      this.button1.BackgroundImage = ((System.Drawing.Image)(Properties.Resources.img2));
}

/// <summary>
/// Handles the MouseLeave event of the button1 control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
private void button1_MouseLeave( object sender, EventArgs e )
{
       this.button1.BackgroundImage = ((System.Drawing.Image)(Properties.Resources.img1));
}

Simpler with the aggregate function string_agg() (Postgres 9.0 or later):

SELECT movie, string_agg(actor, ', ') AS actor_list
FROM   tbl
GROUP  BY 1;

The 1 in GROUP BY 1 is a positional reference and a shortcut for GROUP BY movie in this case.

string_agg() expects data type text as input. Other types need to be cast explicitly (actor::text) - unless an implicit cast to text is defined - which is the case for all other character types (varchar, character, "char"), and some other types.

As isapir commented, you can add an ORDER BY clause in the aggregate call to get a sorted list - should you need that. Like:

SELECT movie, string_agg(actor, ', ' ORDER BY actor) AS actor_list
FROM   tbl
GROUP  BY 1;

But it's typically faster to sort rows in a subquery. See:

• Postgres SQL - Create Array in Select

location ~ [^/]\.php(/|$) {
         fastcgi_pass unix:/PATH_TO_YOUR_PHPFPM_SOCKET_FILE/php7.0-fpm.sock;
         include fastcgi_params;
         fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
         fastcgi_param SCRIPT_NAME $fastcgi_script_name;
}

Good luck

arr.sort(function(a,b) {
    a = a.toLowerCase();
    b = b.toLowerCase();
    if (a == b) return 0;
    if (a > b) return 1;
    return -1;
});

I have had to do this for a small Node.js project and found this work-around:

{
 "modify_head": [

  "<script type='text/javascript'>",
  "<!--",
  "  function drawSomeText(id) {",
  "  var pjs = Processing.getInstanceById(id);",
  "  var text = document.getElementById('inputtext').value;",
  "  pjs.drawText(text);}",
  "-->",
  "</script>"

 ],

 "modify_body": [

  "<input type='text' id='inputtext'></input>",
  "<button onclick=drawSomeText('ExampleCanvas')></button>"

 ],
}

This looks quite neat to me, appart from that I have to use double quotes everywhere. Though otherwise, I could, perhaps, use YAML, but that has other pitfalls and is not supported natively. Once parsed, I just use myData.modify_head.join('\n') or myData.modify_head.join(), depending upon whether I want a line break after each string or not.

I don't know about yum, but rpm -ql will list the files in a particular .rpm file. If you can find the package file on your system you should be good to go.

dumpsys window windows gives more detail about the current activity:

adb shell "dumpsys window windows | grep -E 'mCurrentFocus|mFocusedApp'"
  mCurrentFocus=Window{41d2c970 u0 com.android.launcher/com.android.launcher2.Launcher}
  mFocusedApp=AppWindowToken{4203c170 token=Token{41b77280 ActivityRecord{41b77a28 u0 com.android.launcher/com.android.launcher2.Launcher t3}}}

However in order to find the process ID (e.g. to kill the current activity), use dumpsys activity, and grep on "top-activity":

adb shell "dumpsys activity | grep top-activity"
    Proc # 0: fore  F/A/T  trm: 0 3074:com.android.launcher/u0a8 (top-activity)

adb shell "kill 3074"

Here's a rather simple solution:

In the controller we return our errors like this:

if (!ModelState.IsValid)
        {
            return Json(new { success = false, errors = ModelState.Values.SelectMany(x => x.Errors).Select(x => x.ErrorMessage).ToList() }, JsonRequestBehavior.AllowGet);
        }

Here's some of the client script:

function displayValidationErrors(errors)
{
    var $ul = $('div.validation-summary-valid.text-danger > ul');

    $ul.empty();
    $.each(errors, function (idx, errorMessage) {
        $ul.append('<li>' + errorMessage + '</li>');
    });
}

That's how we handle it via ajax:

$.ajax({
    cache: false,
    async: true,
    type: "POST",
    url: form.attr('action'),
    data: form.serialize(),
    success: function (data) {
        var isSuccessful = (data['success']);

        if (isSuccessful) {
            $('#partial-container-steps').html(data['view']);
            initializePage();
        }
        else {
            var errors = data['errors'];

            displayValidationErrors(errors);
        }
    }
});

Also, I render partial views via ajax in the following way:

var view = this.RenderRazorViewToString(partialUrl, viewModel);
        return Json(new { success = true, view }, JsonRequestBehavior.AllowGet);

RenderRazorViewToString method:

public string RenderRazorViewToString(string viewName, object model)
    {
        ViewData.Model = model;
        using (var sw = new StringWriter())
        {
            var viewResult = ViewEngines.Engines.FindPartialView(ControllerContext,
                                                                     viewName);
            var viewContext = new ViewContext(ControllerContext, viewResult.View,
                                         ViewData, TempData, sw);
            viewResult.View.Render(viewContext, sw);
            viewResult.ViewEngine.ReleaseView(ControllerContext, viewResult.View);
            return sw.GetStringBuilder().ToString();
        }
    }

You can disable all debugging logs using os.environ :

import os
os.environ['TF_CPP_MIN_LOG_LEVEL'] = '3' 
import tensorflow as tf

Tested on tf 0.12 and 1.0

In details,

0 = all messages are logged (default behavior)
1 = INFO messages are not printed
2 = INFO and WARNING messages are not printed
3 = INFO, WARNING, and ERROR messages are not printed

If the user backs out, the onDestroy() method will be called. This method is to stop any service that is used in the application. So if you want to continue the service even if the user backs out of the application, just erase onDestroy(). Hope this help.

You can enable Interceptor in browser and in Postman separately. For send/recieve cookies you should enable Interceptor in Postman. So if you enable interceptor only in browser - it will not work. Actually you don't need enable Interceptor in browser at all - if you don't want to flood your postman history with unnecessary requests.

While Richard's is what you want if you do want to go with a typedef, I'd suggest that it's probably not a particularly good idea in this instance, as you lose sight of it being a pointer, while not gaining anything.

If you were treating it a a counted string, or something with additional functionality, that might be different, but I'd really recommend that in this instance, you just get familiar with the 'standard' C string implementation being a 'char *'...

Turns out that the post (or rather the whole table) was locked by the very same connection that I tried to update the post with.

I had a opened record set of the post that was created by:

Set RecSet = Conn.Execute()

This type of recordset is supposed to be read-only and when I was using MS Access as database it did not lock anything. But apparently this type of record set did lock something on MS SQL Server 2012 because when I added these lines of code before executing the UPDATE SQL statement...

RecSet.Close
Set RecSet = Nothing

...everything worked just fine.

So bottom line is to be careful with opened record sets - even if they are read-only they could lock your table from updates.

You can set a custom baud rate using the stty command on Linux. For example, to set a custom baud rate of 567890 on your serial port /dev/ttyX0, use the command:

stty -F /dev/ttyX0 567890

You should wrap the .h file like so:

#ifndef Included_NameModel_H

#define Included_NameModel_H

// Existing code goes here

#endif

You can use the version-select package:

npm i -D version-select

{
    "name": "test",
    "version": "1.0.0",
    "scripts": {
        "version-select": "version-select"
    },
    "devDependencies": {
        "version-select": "^1.0.13"
    }
}

Read more

Use the Below Code for that

UPDATE Table1 SET Column1 = LTRIM(RTRIM(REPLACE(REPLACE(REPLACE(Column1, CHAR(9), ''), CHAR(10), ''), CHAR(13), '')))`

This is what Chris Sells tells about those statements in The C# Programming Language;

I sometimes forget that yield return is not the same as return , in that the code after a yield return can be executed. For example, the code after the first return here can never be executed:

int F() {
    return 1;
    return 2; // Can never be executed
}

In contrast, the code after the first yield return here can be executed:

IEnumerable<int> F() {
    yield return 1;
    yield return 2; // Can be executed
}

This often bites me in an if statement:

IEnumerable<int> F() {
    if(...) {
        yield return 1; // I mean this to be the only thing returned
    }
    yield return 2; // Oops!
}

In these cases, remembering that yield return is not “final” like return is helpful.

I came across this when I started using three.js as well. It's actually a javascript issue. You currently have:

renderer.setClearColorHex( 0x000000, 1 );

in your threejs init function. Change it to:

renderer.setClearColorHex( 0xffffff, 1 );

Update: Thanks to HdN8 for the updated solution:

renderer.setClearColor( 0xffffff, 0);

Update #2: As pointed out by WestLangley in another, similar question - you must now use the below code when creating a new WebGLRenderer instance in conjunction with the setClearColor() function:

var renderer = new THREE.WebGLRenderer({ alpha: true });

Update #3: Mr.doob points out that since r78 you can alternatively use the code below to set your scene's background colour:

var scene = new THREE.Scene(); // initialising the scene
scene.background = new THREE.Color( 0xff0000 );

multiprocessing.Pool - PicklingError: Can't pickle <type 'thread.lock'>: attribute lookup thread.lock failed

Move the queue to self instead of as an argument to your functions package and send

No need for an init() function, std::vector can be created from a range:

// h file:
class MyClass {
    static std::vector<char> alphabet;
// ...
};

// cpp file:
#include <boost/range.hpp>
static const char alphabet[] = "abcdefghijklmnopqrstuvwxyz";
std::vector<char> MyClass::alphabet( boost::begin( ::alphabet ), boost::end( ::alphabet ) );

Note, however, that statics of class type cause trouble in libraries, so they should be avoided there.

C++11 Update

As of C++11, you can do this instead:

// cpp file:
std::vector<char> MyClass::alphabet = { 'a', 'b', 'c', ..., 'z' };

It's semantically equivalent to the C++98 solution in the original answer, but you can't use a string literal on the right-hand-side, so it's not completely superior. However, if you have a vector of any other type than char, wchar_t, char16_t or char32_t (arrays of which can be written as string literals), the C++11 version will strictly remove boilerplate code without introducing other syntax, compared to the C++98 version.

1) JTable knows JCheckbox with built-in Boolean TableCellRenderers and TableCellEditor by default, then there is contraproductive declare something about that,

2) AbstractTableModel should be useful, where is in the JTable required to reduce/restrict/change nested and inherits methods by default implemented in the DefaultTableModel,

3) consider using DefaultTableModel, (if you are not sure about how to works) instead of AbstractTableModel,

could be generated from simple code:

import javax.swing.*;
import javax.swing.table.*;

public class TableCheckBox extends JFrame {

    private static final long serialVersionUID = 1L;
    private JTable table;

    public TableCheckBox() {
        Object[] columnNames = {"Type", "Company", "Shares", "Price", "Boolean"};
        Object[][] data = {
            {"Buy", "IBM", new Integer(1000), new Double(80.50), false},
            {"Sell", "MicroSoft", new Integer(2000), new Double(6.25), true},
            {"Sell", "Apple", new Integer(3000), new Double(7.35), true},
            {"Buy", "Nortel", new Integer(4000), new Double(20.00), false}
        };
        DefaultTableModel model = new DefaultTableModel(data, columnNames);
        table = new JTable(model) {

            private static final long serialVersionUID = 1L;

            /*@Override
            public Class getColumnClass(int column) {
            return getValueAt(0, column).getClass();
            }*/
            @Override
            public Class getColumnClass(int column) {
                switch (column) {
                    case 0:
                        return String.class;
                    case 1:
                        return String.class;
                    case 2:
                        return Integer.class;
                    case 3:
                        return Double.class;
                    default:
                        return Boolean.class;
                }
            }
        };
        table.setPreferredScrollableViewportSize(table.getPreferredSize());
        JScrollPane scrollPane = new JScrollPane(table);
        getContentPane().add(scrollPane);
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {

            @Override
            public void run() {
                TableCheckBox frame = new TableCheckBox();
                frame.setDefaultCloseOperation(EXIT_ON_CLOSE);
                frame.pack();
                frame.setLocation(150, 150);
                frame.setVisible(true);
            }
        });
    }
}

The reason is because hexdump by default prints out 16-bit integers, not bytes. If your system has them, hd (or hexdump -C) or xxd will provide less surprising outputs - if not, od -t x1 is a POSIX-standard way to get byte-by-byte hex output. You can use od -t x1c to show both the byte hex values and the corresponding letters.

If you have xxd (which ships with vim), you can use xxd -r to convert back from hex (from the same format xxd produces). If you just have plain hex (just the '4161', which is produced by xxd -p) you can use xxd -r -p to convert back.

As you already hinted in your question, your code creates all promises synchronously. Instead they should only be created at the time the preceding one resolves.

Secondly, each promise that is created with new Promise needs to be resolved with a call to resolve (or reject). This should be done when the timer expires. That will trigger any then callback you would have on that promise. And such a then callback (or await) is a necessity in order to implement the chain.

With those ingredients, there are several ways to perform this asynchronous chaining:

1. With a for loop that starts with an immediately resolving promise

2. With Array#reduce that starts with an immediately resolving promise

3. With a function that passes itself as resolution callback

4. With ECMAScript2017's async / await syntax

5. With ECMAScript2020's for await...of syntax

See a snippet and comments for each of these options below.

1. With for

You can use a for loop, but you must make sure it doesn't execute new Promise synchronously. Instead you create an initial immediately resolving promise, and then chain new promises as the previous ones resolve:

for (let i = 0, p = Promise.resolve(); i < 10; i++) {
    p = p.then(_ => new Promise(resolve =>
        setTimeout(function () {
            console.log(i);
            resolve();
        }, Math.random() * 1000)
    ));
}

2. With reduce

This is just a more functional approach to the previous strategy. You create an array with the same length as the chain you want to execute, and start out with an immediately resolving promise:

[...Array(10)].reduce( (p, _, i) => 
    p.then(_ => new Promise(resolve =>
        setTimeout(function () {
            console.log(i);
            resolve();
        }, Math.random() * 1000)
    ))
, Promise.resolve() );

This is probably more useful when you actually have an array with data to be used in the promises.

3. With a function passing itself as resolution-callback

Here we create a function and call it immediately. It creates the first promise synchronously. When it resolves, the function is called again:

(function loop(i) {
    if (i < 10) new Promise((resolve, reject) => {
        setTimeout( () => {
            console.log(i);
            resolve();
        }, Math.random() * 1000);
    }).then(loop.bind(null, i+1));
})(0);

This creates a function named loop, and at the very end of the code you can see it gets called immediately with argument 0. This is the counter, and the i argument. The function will create a new promise if that counter is still below 10, otherwise the chaining stops.

The call to resolve() will trigger the then callback which will call the function again. loop.bind(null, i+1) is just a different way of saying _ => loop(i+1).

4. With async/await

Modern JS engines support this syntax:

(async function loop() {
    for (let i = 0; i < 10; i++) {
        await new Promise(resolve => setTimeout(resolve, Math.random() * 1000));
        console.log(i);
    }
})();

It may look strange, as it seems like the new Promise() calls are executed synchronously, but in reality the async function returns when it executes the first await. Every time an awaited promise resolves, the function's running context is restored, and proceeds after the await, until it encounters the next one, and so it continues until the loop finishes.

As it may be a common thing to return a promise based on a timeout, you could create a separate function for generating such a promise. This is called promisifying a function, in this case setTimeout. It may improve the readability of the code:

const delay = ms => new Promise(resolve => setTimeout(resolve, ms));

(async function loop() {
    for (let i = 0; i < 10; i++) {
        await delay(Math.random() * 1000);
        console.log(i);
    }
})();

5. With for await...of

With EcmaScript 2020, the for await...of found its way to modern JavaScript engines. Although it does not really reduce code in this case, it allows to isolate the definition of the random interval chain from the actual iteration of it:

const delay = ms => new Promise(resolve => setTimeout(resolve, ms));
async function * randomDelays(count ,max) {
    for (let i = 0; i < count; i++) yield delay(Math.random() * max).then(() => i);
}

(async function loop() {
    for await (let i of randomDelays(10, 1000)) console.log(i);
})();

There's also str_pad

<?php
$input = "Alien";
echo str_pad($input, 10);                      // produces "Alien     "
echo str_pad($input, 10, "-=", STR_PAD_LEFT);  // produces "-=-=-Alien"
echo str_pad($input, 10, "_", STR_PAD_BOTH);   // produces "__Alien___"
echo str_pad($input, 6 , "___");               // produces "Alien_"
?>

import javax.swing.*;
class Demo extends JFrame
{
           String str1;
           Demo(String s1)
           {
             str1=s1;
            JOptionPane.showMessageDialog(null,"your message : "+str1);
            }
            public static void main (String ar[])
            {
             new Demo("Java");
            }
}

Use the json module (new in Python 2.6) or the simplejson module which is almost always installed.

    from p in PriceLog
    group p by p.LogDateTime.ToString("MMM") into g
    select new 
    { 
        LogDate = g.Key.ToString("MMM yyyy"),
        GoldPrice = (int)dateGroup.Average(p => p.GoldPrice), 
        SilverPrice = (int)dateGroup.Average(p => p.SilverPrice) 
    }

.contextmenu method :-

Try as follows

<div id="wrap">Right click</div>

<script>
$('#wrap').contextmenu(function() {
  alert("Right click");
});
</script>

.mousedown method:-

$('#wrap').mousedown(function(event) {

        if(event.which == 3){
            alert('Right Mouse button pressed.');
        }  
});

I have also faced the same issue, The solution for it is : the file for which you are getting the error is probably a duplicated file of the actual file with another version. So just the removal of a particular file on which errors are thrown can resolve the issue.

You can't run two SQL statements into one like you are doing.

You can't "execute" a select query.

db is an object and you haven't set it to anything: (e.g. set db = currentdb)

In VBA integer types can hold up to max of 32767 - I would be tempted to use Long.

You might want to be a bit more specific about the date you are inserting:

INSERT INTO Test (Start_Date) VALUES ('#" & format(InDate, "mm/dd/yyyy") & "#' );"

Here is a crude way to do it: Transform JSON into bash variables to eval them.

This only works for:

• JSON which does not contain nested arrays, and
• JSON from trustworthy sources (else it may confuse your shell script, perhaps it may even be able to harm your system, You have been warned)

Well, yes, it uses PERL to do this job, thanks to CPAN, but is small enough for inclusion directly into a script and hence is quick and easy to debug:

json2bash() {
perl -MJSON -0777 -n -E 'sub J {
my ($p,$v) = @_; my $r = ref $v;
if ($r eq "HASH") { J("${p}_$_", $v->{$_}) for keys %$v; }
elsif ($r eq "ARRAY") { $n = 0; J("$p"."[".$n++."]", $_) foreach @$v; }
else { $v =~ '"s/'/'\\\\''/g"'; $p =~ s/^([^[]*)\[([0-9]*)\](.+)$/$1$3\[$2\]/;
$p =~ tr/-/_/; $p =~ tr/A-Za-z0-9_[]//cd; say "$p='\''$v'\'';"; }
}; J("json", decode_json($_));'
}

use it like eval "$(json2bash <<<'{"a":["b","c"]}')"

Not heavily tested, though. Updates, warnings and more examples see my GIST.

Update

(Unfortunately, following is a link-only-solution, as the C code is far too long to duplicate here.)

For all those, who do not like the above solution, there now is a C program json2sh which (hopefully safely) converts JSON into shell variables. In contrast to the perl snippet, it is able to process any JSON, as long as it is well formed.

Caveats:

• json2sh was not tested much.
• json2sh may create variables, which start with the shellshock pattern () {

I wrote json2sh to be able to post-process .bson with Shell:

bson2json()
{
printf '[';
{ bsondump "$1"; echo "\"END$?\""; } | sed '/^{/s/$/,/';
echo ']';
};

bsons2json()
{
printf '{';
c='';
for a;
do
  printf '%s"%q":' "$c" "$a";
  c=',';
  bson2json "$a";
done;
echo '}';
};

bsons2json */*.bson | json2sh | ..

Explained:

• bson2json dumps a .bson file such, that the records become a JSON array
  • If everything works OK, an END0-Marker is applied, else you will see something like END1.
  • The END-Marker is needed, else empty .bson files would not show up.
• bsons2json dumps a bunch of .bson files as an object, where the output of bson2json is indexed by the filename.

This then is postprocessed by json2sh, such that you can use grep/source/eval/etc. what you need, to bring the values into the shell.

This way you can quickly process the contents of a MongoDB dump on shell level, without need to import it into MongoDB first.

The script tag to the api has changed recently. Use something like this to query the Geocoding API and get the JSON object back

<script type="text/javascript" src="https://maps.googleapis.com/maps/api/geocode/json?address=THE_ADDRESS_YOU_WANT_TO_GEOCODE&key=YOUR_API_KEY"></script>

The address could be something like

1600+Amphitheatre+Parkway,+Mountain+View,+CA (URI Encoded; you should Google it. Very useful)

or simply

1600 Amphitheatre Parkway, Mountain View, CA

By entering this address https://maps.googleapis.com/maps/api/geocode/json?address=1600+Amphitheatre+Parkway,+Mountain+View,+CA&key=YOUR_API_KEY inside the browser, along with my API Key, I get back a JSON object which contains the Latitude & Longitude for the city of Moutain view, CA.

{"results" : [
  {
     "address_components" : [
        {
           "long_name" : "1600",
           "short_name" : "1600",
           "types" : [ "street_number" ]
        },
        {
           "long_name" : "Amphitheatre Parkway",
           "short_name" : "Amphitheatre Pkwy",
           "types" : [ "route" ]
        },
        {
           "long_name" : "Mountain View",
           "short_name" : "Mountain View",
           "types" : [ "locality", "political" ]
        },
        {
           "long_name" : "Santa Clara County",
           "short_name" : "Santa Clara County",
           "types" : [ "administrative_area_level_2", "political" ]
        },
        {
           "long_name" : "California",
           "short_name" : "CA",
           "types" : [ "administrative_area_level_1", "political" ]
        },
        {
           "long_name" : "United States",
           "short_name" : "US",
           "types" : [ "country", "political" ]
        },
        {
           "long_name" : "94043",
           "short_name" : "94043",
           "types" : [ "postal_code" ]
        }
     ],
     "formatted_address" : "1600 Amphitheatre Pkwy, Mountain View, CA 94043, USA",
     "geometry" : {
        "location" : {
           "lat" : 37.4222556,
           "lng" : -122.0838589
        },
        "location_type" : "ROOFTOP",
        "viewport" : {
           "northeast" : {
              "lat" : 37.4236045802915,
              "lng" : -122.0825099197085
           },
           "southwest" : {
              "lat" : 37.4209066197085,
              "lng" : -122.0852078802915
           }
        }
     },
     "place_id" : "ChIJ2eUgeAK6j4ARbn5u_wAGqWA",
     "types" : [ "street_address" ]
  }],"status" : "OK"}

Web Frameworks such like AngularJS allow us to perform these queries with ease.

For VB.NET, you can place the following before your web request:

Const _Tls12 As SslProtocols = DirectCast(&HC00, SslProtocols)
Const Tls12 As SecurityProtocolType = DirectCast(_Tls12, SecurityProtocolType)
ServicePointManager.SecurityProtocol = Tls12

This solved my security issue on .NET 3.5.

No need to compile stuff. You can do the same with ssh-keygen:

ssh-keygen -f pub1key.pub -i

will read the public key in openssl format from pub1key.pub and output it in OpenSSH format.

Note: In some cases you will need to specify the input format:

ssh-keygen -f pub1key.pub -i -mPKCS8

From the ssh-keygen docs (From man ssh-keygen):

-m key_format Specify a key format for the -i (import) or -e (export) conversion options. The supported key formats are: “RFC4716” (RFC 4716/SSH2 public or private key), “PKCS8” (PEM PKCS8 public key) or “PEM” (PEM public key). The default conversion format is “RFC4716”.

Alt+F4 is working only in brackets

SendKeys.SendWait("(%{F4})");

Some practical uses for the [Serializable] attribute:

• Saving object state using binary serialisation; you can very easily 'save' entire object instances in your application to a file or network stream and then recreate them by deserialising - check out the BinaryFormatter class in System.Runtime.Serialization.Formatters.Binary
• Writing classes whose object instances can be stored on the clipboard using Clipboard.SetData() - nonserialisable classes cannot be placed on the clipboard.
• Writing classes which are compatible with .NET Remoting; generally, any class instance you pass between application domains (except those which extend from MarshalByRefObject) must be serialisable.

These are the most common usage cases that I have come across.

Resolve the route to a URL and navigate the window with Javascript.

        let r = this.$router.resolve({_x000D_
        name: this.$route.name, // put your route information in_x000D_
        params: this.$route.params, // put your route information in_x000D_
        query: this.$route.query // put your route information in_x000D_
      });_x000D_
      window.location.assign(r.href)

This method replaces the URL and causes the page to do a full request (refresh) rather than relying on Vue.router. $router.go does not work the same for me even though it is theoretically supposed to.

• A compiler reads, analyses and translates code into either an object file or a list of error messages.
• A linker combines one or more object files and possible some library code into either some executable, some library or a list of error messages.
• A loader reads the executable code into memory, does some address translation and tries to run the program resulting in a running program or an error message (or both).

ASCII representation:

[Source Code] ---> Compiler ---> [Object code] --*
                                                 |
[Source Code] ---> Compiler ---> [Object code] --*--> Linker --> [Executable] ---> Loader 
                                                 |                                    |
[Source Code] ---> Compiler ---> [Object code] --*                                    |
                                                 |                                    |
                                 [Library file]--*                                    V
                                                                       [Running Executable in Memory]

you can use setAttribute function in Model to add a custom attribute

Same issue I'm getting in my MYSQL while running sql script Please look into below image.. Error code 1206: The number of locks exceeds the lock table size Picture

This is Mysql configuration issue so I made some changes in my.ini and It's working on my system & issue resolved.

We need to make some changes in my.ini which is available on following Path:- C:\ProgramData\MySQL\MySQL Server 5.7\my.ini and please update following changes in my.ini config file fields:-

key_buffer_size=64M
read_buffer_size=64M
read_rnd_buffer_size=128M
innodb_log_buffer_size=10M
innodb_buffer_pool_size=256M
query_cache_type=2
max_allowed_packet=16M

After all above changes please restart the MYSQL Service. Please refer the image:- Microsoft MYSQL Service Picture

You can use this function instead if curl is installed on your system:

function get_url_contents($url){  
  if (function_exists('file_get_contents')) {  
    $result = @file_get_contents($url);  
  }  
  if ($result == '') {  
    $ch = curl_init();  
    $timeout = 30;  
    curl_setopt($ch, CURLOPT_URL, $url);  
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);  
    $result = curl_exec($ch);  
    curl_close($ch);  
  }  

  return $result;  
}

It may means that you forgot include a header file that define this struct/union. For example:

foo.h file:

typedef union
{
    struct
    {
        uint8_t FIFO_BYTES_AVAILABLE    : 4;
        uint8_t STATE                   : 3;
        uint8_t CHIP_RDY                : 1;
    };
    uint8_t status;
} RF_CHIP_STATUS_t;

RF_CHIP_STATUS_t getStatus();

main.c file:

.
.
.
if (getStatus().CHIP_RDY) /* This will generate the error, you must add the  #include "foo.h" */
.
.
.

This should work:

/^((?!PART).)*$/

If you only wanted to exclude it from the beginning of the line (I know you don't, but just FYI), you could use this:

/^(?!PART)/

Edit (by request): Why this pattern works

The (?!...) syntax is a negative lookahead, which I've always found tough to explain. Basically, it means "whatever follows this point must not match the regular expression /PART/." The site I've linked explains this far better than I can, but I'll try to break this down:

^         #Start matching from the beginning of the string.    
(?!PART)  #This position must not be followed by the string "PART".
.         #Matches any character except line breaks (it will include those in single-line mode).
$         #Match all the way until the end of the string.

The ((?!xxx).)* idiom is probably hardest to understand. As we saw, (?!PART) looks at the string ahead and says that whatever comes next can't match the subpattern /PART/. So what we're doing with ((?!xxx).)* is going through the string letter by letter and applying the rule to all of them. Each character can be anything, but if you take that character and the next few characters after it, you'd better not get the word PART.

The ^ and $ anchors are there to demand that the rule be applied to the entire string, from beginning to end. Without those anchors, any piece of the string that didn't begin with PART would be a match. Even PART itself would have matches in it, because (for example) the letter A isn't followed by the exact string PART.

Since we do have ^ and $, if PART were anywhere in the string, one of the characters would match (?=PART). and the overall match would fail. Hope that's clear enough to be helpful.

What you have should work. If, however, the spaces provided are defaulting to... something else? You can use the whitespace regex:

str = "Hello I'm your String";
String[] splited = str.split("\\s+");

This will cause any number of consecutive spaces to split your string into tokens.

As a side note, I'm not sure "splited" is a word :) I believe the state of being the victim of a split is also "split". It's one of those tricky grammar things :-) Not trying to be picky, just figured I'd pass it on!

The comments state the objective is to print to 2 decimal places.

There's a simple answer for Python 3:

>>> num=3.65
>>> "The number is {:.2f}".format(num)
'The number is 3.65'

or equivalently with f-strings (Python 3.6+):

>>> num = 3.65
>>> f"The number is {num:.2f}"
'The number is 3.65'

As always, the float value is an approximation:

>>> "{}".format(num)
'3.65'
>>> "{:.10f}".format(num)
'3.6500000000'
>>> "{:.20f}".format(num)
'3.64999999999999991118'

I think most use cases will want to work with floats and then only print to a specific precision.

Those that want the numbers themselves to be stored to exactly 2 decimal digits of precision, I suggest use the decimal type. More reading on floating point precision for those that are interested.

When you assign a function to a variable you don't use the () but simply the name of the function.

In your case given def x(): ..., and variable silly_var you would do something like this:

silly_var = x

and then you can call the function either with

x()

or

silly_var()

I'd have to agree with what you've been hearing. When we benchmark our cluster (xhpl and such), we always get significantly better performance with processes over threads. </anecdote>

I've used this function to merge objects in the past, I use it to add or update existing properties on obj1 with values from obj2:

var _mergeRecursive = function(obj1, obj2) {

      //iterate over all the properties in the object which is being consumed
      for (var p in obj2) {
          // Property in destination object set; update its value.
          if ( obj2.hasOwnProperty(p) && typeof obj1[p] !== "undefined" ) {
            _mergeRecursive(obj1[p], obj2[p]);

          } else {
            //We don't have that level in the heirarchy so add it
            obj1[p] = obj2[p];

          }
     }
}

It will handle multiple levels of hierarchy as well as single level objects. I used it as part of a utility library for manipulating JSON objects. You can find it here.

This question might have been asked some time ago, but as I recently landed on this topic looking for client-side form validation, and as the :placeholder-shown support is getting better, I thought the following might help others.

Using Berend idea of using this CSS4 pseudo-class, I was able to create a form validation only triggered after the user is finished filling it.

Here is ademo and explanation on CodePen: https://codepen.io/johanmouchet/pen/PKNxKQ

I just figured out how to do this:

It appears that when you add a parent folder to version control, Eclipse adds all sub-folders. Once the sub-folders are added to version control, it is not possible to ignore them.

Here's how to do it:

Right click on the top level folder and add to version control Right click on the child folder you want to ignore, revert Right click on the child folder you want to ignore, svn:ignore (which will now be available)

Create your own unistd.h header and include the needed headers for function prototypes.

First import these libraries

import AVFoundation

import AudioToolbox    

set delegate like this

   AVAudioPlayerDelegate

write this pretty code on button action or something action:

guard let url = Bundle.main.url(forResource: "ring", withExtension: "mp3") else { return }
    do {
        try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback)
        try AVAudioSession.sharedInstance().setActive(true)
        player = try AVAudioPlayer(contentsOf: url, fileTypeHint: AVFileType.mp3.rawValue)
        guard let player = player else { return }

        player.play()
    }catch let error{
        print(error.localizedDescription)
    }

100% working in my project and tested

Here is the arguments parser. You can mix any string arguments (kept untouched) or escaped options (single or option/value pairs). To test it uncomment last 2 statements and run as:

getargs anystr1 anystr2 /test$1 /test$2=123 /test$3 str anystr3

Escape char is defined as "_SEP_=/", redefine if needed.

@echo off

REM Command line argument parser. Format (both "=" and "space" separators are supported):
REM   anystring1 anystring2 /param1 /param2=value2 /param3 value3 [...] anystring3 anystring4
REM Returns enviroment variables as:
REM   param1=1
REM   param2=value2
REM   param3=value3
REM Leading and traling strings are preserved as %1, %2, %3 ... %9 parameters
REM but maximum total number of strings is 9 and max number of leading strings is 8
REM Number of parameters is not limited!

set _CNT_=1
set _SEP_=/

:PARSE

if %_CNT_%==1 set _PARAM1_=%1 & set _PARAM2_=%2
if %_CNT_%==2 set _PARAM1_=%2 & set _PARAM2_=%3
if %_CNT_%==3 set _PARAM1_=%3 & set _PARAM2_=%4
if %_CNT_%==4 set _PARAM1_=%4 & set _PARAM2_=%5
if %_CNT_%==5 set _PARAM1_=%5 & set _PARAM2_=%6
if %_CNT_%==6 set _PARAM1_=%6 & set _PARAM2_=%7
if %_CNT_%==7 set _PARAM1_=%7 & set _PARAM2_=%8
if %_CNT_%==8 set _PARAM1_=%8 & set _PARAM2_=%9

if "%_PARAM2_%"=="" set _PARAM2_=1

if "%_PARAM1_:~0,1%"=="%_SEP_%" (
  if "%_PARAM2_:~0,1%"=="%_SEP_%" (
    set %_PARAM1_:~1,-1%=1
    shift /%_CNT_%
  ) else (
    set %_PARAM1_:~1,-1%=%_PARAM2_%
    shift /%_CNT_%
    shift /%_CNT_%
  )
) else (
  set /a _CNT_+=1
)

if /i %_CNT_% LSS 9 goto :PARSE

set _PARAM1_=
set _PARAM2_=
set _CNT_=

rem getargs anystr1 anystr2 /test$1 /test$2=123 /test$3 str anystr3
rem set | find "test$"
rem echo %1 %2 %3 %4 %5 %6 %7 %8 %9

:EXIT

When calling System.loadLibrary(), the JVM will look on the java.library.path for your native library. However, if that native library declares any dependencies on other native libraries, then the operating system will be tasked with finding those native library dependencies.

Since the operating system has no concept of the java.library.path, it will not see any directories you place on the java.library.path. Instead, it will only search the directories on PATH environment variable of the operating system. This is totally fine if the native library dependency is an operating system native library because it will be found on the PATH. However, if the native library dependency is a native library that you or someone else created, then it will not be found on the PATH unless you place it there. This behavior is strange, unexpected, and not well documented, but it is documented in the OpenJDK issue tracker here. You can also find another StackOverflow answer reinforcing this explanation, here.

So, you have a couple of options. You could either load each native library in the correct dependency order using System.loadLibrary(), or you could modify the PATH to include the directories where your native libraries are stored.

You should not need to add this back in. This was removed purposefully. The documentation has changed somewhat and the CSS class that is necessary ("nav-stacked") is only mentioned under the pills component, but should work for tabs as well.

This tutorial shows how to use the Bootstrap 3 setup properly to do vertical tabs:
tutsme-webdesign.info/bootstrap-3-toggable-tabs-and-pills

Pass data from child to parent Component using Callback

You need to pass from parent to child callback function, and then call it in the child.

Parent Component:-TimeModal

  handleTimeValue = (timeValue) => {
      this.setState({pouringDiff: timeValue});
  }

  <TimeSelection 
        prePourPreHours={prePourPreHours}
        setPourTime={this.setPourTime}
        isPrePour={isPrePour}
        isResident={isResident}
        isMilitaryFormatTime={isMilitaryFormatTime}
        communityDateTime={moment(communityDT).format("MM/DD/YYYY hh:mm A")}
        onSelectPouringTimeDiff={this.handleTimeValue}
     />

Note:- onSelectPouringTimeDiff={this.handleTimeValue}

In the Child Component call props when required

 componentDidMount():void{
      // Todo use this as per your scenrio
       this.props.onSelectPouringTimeDiff(pouringDiff);  
  }

When I used the Scaffold-DbContext command, it didn't include the "[key]" annotation in the model files or the "entity.HasKey(..)" entry in the "modelBuilder.Entity" blocks. My solution was to add a line like this in every "modelBuilder.Entity" block in the *Context.cs file:

entity.HasKey(X => x.Id);

I'm not saying this is better, or even the right way. I'm just saying that it worked for me.

I've colour coded this figure to ease the process.

import matplotlib.pyplot as plt
fig = plt.figure()
ax = fig.add_subplot(111)

You can have full control over the figure using these commands, to complete the answer I've add also the control over the splines:

ax.spines['top'].set_visible(False)
ax.spines['right'].set_visible(False)

# X AXIS -BORDER
ax.spines['bottom'].set_visible(False)
# BLUE
ax.set_xticklabels([])
# RED
ax.set_xticks([])
# RED AND BLUE TOGETHER
ax.axes.get_xaxis().set_visible(False)

# Y AXIS -BORDER
ax.spines['left'].set_visible(False)
# YELLOW
ax.set_yticklabels([])
# GREEN
ax.set_yticks([])
# YELLOW AND GREEN TOGHETHER
ax.axes.get_yaxis().set_visible(False)

Just one line of coding is enough.. just try this out. and you can adjust even thicknes of icon-bar with this by adding pixels.

HTML

<div class="navbar-header">
  <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#defaultNavbar1" aria-expanded="false"><span class="sr-only">Toggle navigation</span>

  <span class="icon-bar"></span>
  <span class="icon-bar"></span>
  <span class="icon-bar"></span>

  </button>
  <a class="navbar-brand" href="#" <span class="icon-bar"></span><img class="img-responsive brand" src="img/brand.png">
  </a></div>

CSS

    .navbar-toggle, .icon-bar {
    border:1px solid orange;
}

BOOM...

In javascript you can do:

window.open(url, "_blank");

Here's a quick and dirty example of how a class could fire different versions of a save method depending on which operating system it's being executed on using getattr().

import os

class Log(object):
    def __init__(self):
        self.os = os.name
    def __getattr__(self, name):
        """ look for a 'save' attribute, or just 
          return whatever attribute was specified """
        if name == 'save':
            try:
                # try to dynamically return a save 
                # method appropriate for the user's system
                return getattr(self, self.os)
            except:
                # bail and try to return 
                # a default save method
                return getattr(self, '_save')
        else:
            return getattr(self, name)

    # each of these methods could have save logic specific to 
    # the system on which the script is executed
    def posix(self): print 'saving on a posix machine'
    def nt(self): print 'saving on an nt machine'
    def os2(self): print 'saving on an os2 machine'
    def ce(self): print 'saving on a ce machine'
    def java(self): print 'saving on a java machine'
    def riscos(self): print 'saving on a riscos machine'
    def _save(self): print 'saving on an unknown operating system'

    def which_os(self): print os.name

Now let's use this class in an example:

logger = Log()

# Now you can do one of two things:
save_func = logger.save
# and execute it, or pass it along 
# somewhere else as 1st class:
save_func()

# or you can just call it directly:
logger.save()

# other attributes will hit the else 
# statement and still work as expected
logger.which_os()

All required parameters must be placed before any default arguments. Simply because they are mandatory, whereas default arguments are not. Syntactically, it would be impossible for the interpreter to decide which values match which arguments if mixed modes were allowed. A SyntaxError is raised if the arguments are not given in the correct order:

Let us take a look at keyword arguments, using your function.

def fun1(a="who is you", b="True", x, y):
...     print a,b,x,y

Suppose its allowed to declare function as above, Then with the above declarations, we can make the following (regular) positional or keyword argument calls:

func1("ok a", "ok b", 1)  # Is 1 assigned to x or ?
func1(1)                  # Is 1 assigned to a or ?
func1(1, 2)               # ?

How you will suggest the assignment of variables in the function call, how default arguments are going to be used along with keyword arguments.

>>> def fun1(x, y, a="who is you", b="True"):
...     print a,b,x,y
... 

Reference O'Reilly - Core-Python
Where as this function make use of the default arguments syntactically correct for above function calls. Keyword arguments calling prove useful for being able to provide for out-of-order positional arguments, but, coupled with default arguments, they can also be used to "skip over" missing arguments as well.

Solution using Jackson library. Sorted this problem by verifying the json on JSONLint.com and then using Jackson. Below is the code for the same.

 Main Class:-

String jsonStr = "[{\r\n" + "       \"name\": \"John\",\r\n" + "        \"city\": \"Berlin\",\r\n"
                + "         \"cars\": [\r\n" + "            \"FIAT\",\r\n" + "          \"Toyata\"\r\n"
                + "     ],\r\n" + "     \"job\": \"Teacher\"\r\n" + "   },\r\n" + " {\r\n"
                + "     \"name\": \"Mark\",\r\n" + "        \"city\": \"Oslo\",\r\n" + "        \"cars\": [\r\n"
                + "         \"VW\",\r\n" + "            \"Toyata\"\r\n" + "     ],\r\n"
                + "     \"job\": \"Doctor\"\r\n" + "    }\r\n" + "]";

        ObjectMapper mapper = new ObjectMapper();

        MyPojo jsonObj[] = mapper.readValue(jsonStr, MyPojo[].class);

        for (MyPojo itr : jsonObj) {

            System.out.println("Val of getName is: " + itr.getName());
            System.out.println("Val of getCity is: " + itr.getCity());
            System.out.println("Val of getJob is: " + itr.getJob());
            System.out.println("Val of getCars is: " + itr.getCars() + "\n");

        }

POJO:

public class MyPojo {

private List<String> cars = new ArrayList<String>();

private String name;

private String job;

private String city;

public List<String> getCars() {
    return cars;
}

public void setCars(List<String> cars) {
    this.cars = cars;
}

public String getName() {
    return name;
}

public void setName(String name) {
    this.name = name;
}

public String getJob() {
    return job;
}

public void setJob(String job) {
    this.job = job;
}

public String getCity() {
    return city;
}

public void setCity(String city) {
    this.city = city;
} }

  RESULT:-
         Val of getName is: John
         Val of getCity is: Berlin
         Val of getJob is: Teacher
         Val of getCars is: [FIAT, Toyata]

          Val of getName is: Mark
          Val of getCity is: Oslo
          Val of getJob is: Doctor
          Val of getCars is: [VW, Toyata]

You can use itoa function to convert the integer to a string.

You can use strcat function to append characters in a string at the end of another string.

If you want to convert a integer to a character, just do the following -

int a = 65;
char c = (char) a;

Note that since characters are smaller in size than integer, this casting may cause a loss of data. It's better to declare the character variable as unsigned in this case (though you may still lose data).

To do a light reading about type conversion, go here.

If you are still having trouble, comment on this answer.

Edit

Go here for a more suitable example of joining characters.

Also some more useful link is given below -

1. http://www.cplusplus.com/reference/clibrary/cstring/strncat/
2. http://www.cplusplus.com/reference/clibrary/cstring/strcat/

Second Edit

char msg[200];
int msgLength;
char rankString[200];

........... // Your message has arrived
msgLength = strlen(msg);
itoa(rank, rankString, 10); // I have assumed rank is the integer variable containing the rank id

strncat( msg, rankString, (200 - msgLength) );  // msg now contains previous msg + id

// You may loose some portion of id if message length + id string length is greater than 200

Third Edit

Go to this link. Here you will find an implementation of itoa. Use that instead.

Shortest solution to be assign the window to a typescript variable then call the print method on that, like below

in template file

<button ... (click)="window.print()" ...>Submit</button>

and, in typescript file

window: any;
constructor() {
  this.window = window;
}

You will find Python's string literal documentation here:

http://docs.python.org/tutorial/introduction.html#strings

and here:

http://docs.python.org/reference/lexical_analysis.html#literals

The simplest example would be using the 'r' prefix:

ss = r'Hello\nWorld'
print(ss)
Hello\nWorld

Use this code where str is your JSON string:

NSError *err = nil;
NSArray *arr = 
 [NSJSONSerialization JSONObjectWithData:[str dataUsingEncoding:NSUTF8StringEncoding] 
                                 options:NSJSONReadingMutableContainers 
                                   error:&err];
// access the dictionaries
NSMutableDictionary *dict = arr[0];
for (NSMutableDictionary *dictionary in arr) {
  // do something using dictionary
}

For me, it worked when I selected the correct bit of my Python version, NOT the one of my computer version.

Mine is 32bit, and my computer is 64bit. That was the problem and the 32bit version of fixed it.

to be exact, here is the one that worked for me: mysqlclient-1.3.13-cp37-cp37m-win32.whl

This is an updated version for .NET 4.5 and newer using async/await and IEnumerables:

public static class CompressionExtensions
{
    public static async Task<IEnumerable<byte>> Zip(this object obj)
    {
        byte[] bytes = obj.Serialize();

        using (MemoryStream msi = new MemoryStream(bytes))
        using (MemoryStream mso = new MemoryStream())
        {
            using (var gs = new GZipStream(mso, CompressionMode.Compress))
                await msi.CopyToAsync(gs);

            return mso.ToArray().AsEnumerable();
        }
    }

    public static async Task<object> Unzip(this byte[] bytes)
    {
        using (MemoryStream msi = new MemoryStream(bytes))
        using (MemoryStream mso = new MemoryStream())
        {
            using (var gs = new GZipStream(msi, CompressionMode.Decompress))
            {
                // Sync example:
                //gs.CopyTo(mso);

                // Async way (take care of using async keyword on the method definition)
                await gs.CopyToAsync(mso);
            }

            return mso.ToArray().Deserialize();
        }
    }
}

public static class SerializerExtensions
{
    public static byte[] Serialize<T>(this T objectToWrite)
    {
        using (MemoryStream stream = new MemoryStream())
        {
            BinaryFormatter binaryFormatter = new BinaryFormatter();
            binaryFormatter.Serialize(stream, objectToWrite);

            return stream.GetBuffer();
        }
    }

    public static async Task<T> _Deserialize<T>(this byte[] arr)
    {
        using (MemoryStream stream = new MemoryStream())
        {
            BinaryFormatter binaryFormatter = new BinaryFormatter();
            await stream.WriteAsync(arr, 0, arr.Length);
            stream.Position = 0;

            return (T)binaryFormatter.Deserialize(stream);
        }
    }

    public static async Task<object> Deserialize(this byte[] arr)
    {
        object obj = await arr._Deserialize<object>();
        return obj;
    }
}

With this you can serialize everything BinaryFormatter supports, instead only of strings.

Edit:

In case, you need take care of Encoding, you could just use Convert.ToBase64String(byte[])...

Take a look at this answer if you need an example!

It turns out, after messing around with all of the settings in the test business account, that one (or more) of the fraud related settings in the payment receiving preferences / security settings screens were causing the test payments to fail (without any useful error).

The And operator evaluates both sides, where AndAlso evaluates the right side if and only if the left side is true.

An example:

If mystring IsNot Nothing And mystring.Contains("Foo") Then
  ' bla bla
End If

The above throws an exception if mystring = Nothing

If mystring IsNot Nothing AndAlso mystring.Contains("Foo") Then
  ' bla bla
End If

This one does not throw an exception.

So if you come from the C# world, you should use AndAlso like you would use &&.

More info here: http://www.panopticoncentral.net/2003/08/18/the-ballad-of-andalso-and-orelse/

A good answer already, but there are a couple of other ways to do this:

unique(c[c%in%a[a%in%b]])

or,

tst <- c(unique(a),unique(b),unique(c))
tst <- tst[duplicated(tst)]
tst[duplicated(tst)]

You can obviously omit the unique calls if you know that there are no repeated values within a, b or c.

If you use input property databinding with a JavaScript reference type (e.g., Object, Array, Date, etc.), then the parent and child will both have a reference to the same/one object. Any changes you make to the shared object will be visible to both parent and child.

In the parent's template:

<child [aList]="sharedList"></child>

In the child:

@Input() aList;
...
updateList() {
    this.aList.push('child');
}

If you want to add items to the list upon construction of the child, use the ngOnInit() hook (not the constructor(), since the data-bound properties aren't initialized at that point):

ngOnInit() {
    this.aList.push('child1')
}

This Plunker shows a working example, with buttons in the parent and child component that both modify the shared list.

Note, in the child you must not reassign the reference. E.g., don't do this in the child: this.aList = someNewArray; If you do that, then the parent and child components will each have references to two different arrays.

If you want to share a primitive type (i.e., string, number, boolean), you could put it into an array or an object (i.e., put it inside a reference type), or you could emit() an event from the child whenever the primitive value changes (i.e., have the parent listen for a custom event, and the child would have an EventEmitter output property. See @kit's answer for more info.)

Update 2015/12/22: the heavy-loader example in the Structural Directives guides uses the technique I presented above. The main/parent component has a logs array property that is bound to the child components. The child components push() onto that array, and the parent component displays the array.

Ah, just needed to find the right name for this: "Lazy property evaluation".

I do this a lot too; maybe I'll use that recipe in my code sometime.

only use:

cout << dec << 0x;

The errors you posted are unrelated. The first one is due to you selecting a backend that is not meant for interactive use, i.e. agg. You can still use (and should use) those for the generation of plots in scripts that don't require user interaction.

If you want an interactive lab-environment, as in Matlab/Pylab, you'd obviously import a backend supporting gui usage, such as Qt4Agg (needs Qt and AGG), GTKAgg (GTK an AGG) or WXAgg (wxWidgets and Agg).

I'd start by trying to use WXAgg, apart from that it really depends on how you installed Python and matplotlib (source, package etc.)

For all those whose issue was from the ajax call, here is a full example :

Ajax call : the key here is to use a dict and then JSON.stringify

    var dict = {username : "username" , password:"password"};

    $.ajax({
        type: "POST", 
        url: "http://127.0.0.1:5000/", //localhost Flask
        data : JSON.stringify(dict),
        contentType: "application/json",
    });

And on server side :

from flask import Flask
from flask import request
import json

app = Flask(__name__)

@app.route("/",  methods = ['POST'])
def hello():
    print(request.get_json())
    return json.dumps({'success':True}), 200, {'ContentType':'application/json'} 

if __name__ == "__main__":
    app.run()

Save as fix_whitespace.py:

#!/usr/bin/env python
"""
Fix trailing whitespace and line endings (to Unix) in a file.
Usage: python fix_whitespace.py foo.py
"""

import os
import sys


def main():
    """ Parse arguments, then fix whitespace in the given file """
    if len(sys.argv) == 2:
        fname = sys.argv[1]
        if not os.path.exists(fname):
            print("Python file not found: %s" % sys.argv[1])
            sys.exit(1)
    else:
        print("Invalid arguments. Usage: python fix_whitespace.py foo.py")
        sys.exit(1)
    fix_whitespace(fname)


def fix_whitespace(fname):
    """ Fix whitespace in a file """
    with open(fname, "rb") as fo:
        original_contents = fo.read()
    # "rU" Universal line endings to Unix
    with open(fname, "rU") as fo:
        contents = fo.read()
    lines = contents.split("\n")
    fixed = 0
    for k, line in enumerate(lines):
        new_line = line.rstrip()
        if len(line) != len(new_line):
            lines[k] = new_line
            fixed += 1
    with open(fname, "wb") as fo:
        fo.write("\n".join(lines))
    if fixed or contents != original_contents:
        print("************* %s" % os.path.basename(fname))
    if fixed:
        slines = "lines" if fixed > 1 else "line"
        print("Fixed trailing whitespace on %d %s" \
              % (fixed, slines))
    if contents != original_contents:
        print("Fixed line endings to Unix (\\n)")


if __name__ == "__main__":
    main()

You can also get a query string value as:

$uri =  $_SERVER["REQUEST_URI"]; //it will print full url
$uriArray = explode('/', $uri); //convert string into array with explode
$id = $uriArray[1]; //Print first array value

This selector $("ul [data-slide='" + current +"']"); will work for following structure:

<ul><li data-slide="item"></li></ul>  

While this $("ul[data-slide='" + current +"']"); will work for:

<ul data-slide="item"><li></li></ul>

http://www.mathworks.com/help/techdoc/ref/rand.html

n = 13 + (rand(1) * 7);

Add following to your maven dependency

    <dependency>
        <groupId>javax.mail</groupId>
        <artifactId>mail</artifactId>
        <version>1.4.5</version>
    </dependency>

    <dependency>
        <groupId>javax.activation</groupId>
        <artifactId>activation</artifactId>
        <version>1.1.1</version>
    </dependency>

Try this:

<input type="text" placeholder="some text" class="search" onkeydown="search(this)"/>  
<input type="text" placeholder="some text" class="search" onkeydown="search(this)"/>

JS Code

function search(ele) {
    if(event.key === 'Enter') {
        alert(ele.value);        
    }
}

DEMO Link

Sometime I have to work from home and connect to office through vpn. Internal domain names should be resolved to different IPs at home. There are several names that have to be changed between office and home. For example:

At office, a => 192.168.0.3, b => 192.168.0.52. 
At home, a => 10.6.1.7, b => 10.4.5.23. 

My solution is to create two files: C:\WINDOWS\system32\drivers\etc\hosts-home and C:\WINDOWS\system32\drivers\etc\hosts-office. Each of them contains set of name-to-IP mapping. From Administrator PowerShell, When I work at the office, execute

C:\WINDOWS\system32> cp .\drivers\etc\hosts-office .\drivers\etc\hosts

When I arrive at home, execute

C:\WINDOWS\system32> cp .\drivers\etc\hosts-home .\drivers\etc\hosts

The padding inside a table-divider (TD) is a padding property applied to the cell itself.

CSS

td, th {padding:0}

The spacing in-between the table-dividers is a space between cell borders of the TABLE. To make it effective, you have to specify if your table cells borders will 'collapse' or be 'separated'.

CSS

table, td, th {border-collapse:separate}
table {border-spacing:6px}

Try this : https://www.google.ca/search?num=100&newwindow=1&q=css+table+cellspacing+cellpadding+site%3Astackoverflow.com ( 27 100 results )

I'm turning my comment to an answer, so it can be accepted and this question no longer remains unanswered.

The most likely cause of this is a malformed response, which includes characters before the initial <?xml …>. So please have a look at the document as transferred over HTTP, and fix this on the server side.

.text() will give you the actual text in between HTML tags. For example, the paragraph text in between p tags. What is interesting to note is that it will give you all the text in the element you are targeting with with your $ selector plus all the text in the children elements of that selected element. So If you have multiple p tags with text inside the body element and you do a $(body).text(), you will get all the text from all the paragraphs. (Text only, not the p tags themselves.)

.html() will give you the text and the tags. So $(body).html() will basically give you your entire page HTML page

.val() works for elements that have a value attribute, such as input. An input does not have contained text or HTML and thus .text() and .html() will both be null for input elements.

I had this issue with python 3.5, anaconda 3, windows 7 32 bit. I solved it by moving my pythonX.lib and pythonX.dll files into my working directory and calling

Py_SetPythonHome(L"C:\\Path\\To\\My\\Python\\Installation");

before initialize so that it could find the headers that it needed, where my path was to "...\Anaconda3\". The extra step of calling Py_SetPythonHome was required for me or else I'd end up getting other strange errors where python import files.

Here's my version that uses FontAwesome for checkbox ticker, I think FontAwesome is used by almost everybody so it's safe to assume you have it too. Not tested in IE/Edge and I don't think anyone cares.

input[type=checkbox] {_x000D_
 -moz-appearance:none;_x000D_
 -webkit-appearance:none;_x000D_
 -o-appearance:none;_x000D_
 outline: none;_x000D_
 content: none; _x000D_
}_x000D_
_x000D_
input[type=checkbox]:before {_x000D_
 font-family: "FontAwesome";_x000D_
    content: "\f00c";_x000D_
    font-size: 15px;_x000D_
    color: transparent !important;_x000D_
    background: #fef2e0;_x000D_
    display: block;_x000D_
    width: 15px;_x000D_
    height: 15px;_x000D_
    border: 1px solid black;_x000D_
    margin-right: 7px;_x000D_
}_x000D_
_x000D_
input[type=checkbox]:checked:before {_x000D_
_x000D_
 color: black !important;_x000D_
}

<link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.css" rel="stylesheet"/>_x000D_
_x000D_
<input type="checkbox">

No, you're not allocating memory for y->x twice.

Instead, you're allocating memory for the structure (which includes a pointer) plus something for that pointer to point to.

Think of it this way:

         1          2
        +-----+    +------+
y------>|  x------>|  *x  |
        |  n  |    +------+
        +-----+

So you actually need the two allocations (1 and 2) to store everything.

Additionally, your type should be struct Vector *y since it's a pointer, and you should never cast the return value from malloc in C since it can hide certain problems you don't want hidden - C is perfectly capable of implicitly converting the void* return value to any other pointer.

And, of course, you probably want to encapsulate the creation of these vectors to make management of them easier, such as with:

struct Vector {
    double *data;    // no place for x and n in readable code :-)
    size_t size;
};

struct Vector *newVector (size_t sz) {
    // Try to allocate vector structure.

    struct Vector *retVal = malloc (sizeof (struct Vector));
    if (retVal == NULL)
        return NULL;

    // Try to allocate vector data, free structure if fail.

    retVal->data = malloc (sz * sizeof (double));
    if (retVal->data == NULL) {
        free (retVal);
        return NULL;
    }

    // Set size and return.

    retVal->size = sz;
    return retVal;
}

void delVector (struct Vector *vector) {
    // Can safely assume vector is NULL or fully built.

    if (vector != NULL) {
        free (vector->data);
        free (vector);
    }
}

By encapsulating the creation like that, you ensure that vectors are either fully built or not built at all - there's no chance of them being half-built. It also allows you to totally change the underlying data structures in future without affecting clients (for example, if you wanted to make them sparse arrays to trade off space for speed).

They are extension methods. Welcome to a whole new fluent world. :)

To match pattern or an empty string, use

^$|pattern

Explanation

• ^ and $ are the beginning and end of the string anchors respectively.
• | is used to denote alternates, e.g. this|that.

References

• regular-expressions.info/Anchors and Alternation

On \b

\b in most flavor is a "word boundary" anchor. It is a zero-width match, i.e. an empty string, but it only matches those strings at very specific places, namely at the boundaries of a word.

That is, \b is located:

• Between consecutive \w and \W (either order):
  • i.e. between a word character and a non-word character
• Between ^ and \w
  • i.e. at the beginning of the string if it starts with \w
• Between \w and $
  • i.e. at the end of the string if it ends with \w

References

• regular-expressions.info/Word Boundaries

On using regex to match e-mail addresses

This is not trivial depending on specification.

Related questions

• What is the best regular expression for validating email addresses?
• Regexp recognition of email address hard?
• How far should one take e-mail address validation?

The better pattern is to create a standalone BroadcastReceiver. This insures that your app can respond to the broadcast, whether or not the Service is running. In fact, using this pattern may remove the need for a constant-running Service altogether.

Register the BroadcastReceiver in your Manifest, and create a separate class/file for it.

Eg:

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

When the receiver runs, you simply pass an Intent (Bundle) to the Service, and respond to it in onStartCommand().

Eg:

public class FooReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        // do your work quickly!
        // then call context.startService();
    }   
}

I had the same issue recently, and I solved it like this:

SELECT * FROM table WHERE 
    strftime('%s', date) BETWEEN strftime('%s', start_date) AND strftime('%s', end_date)

The following statement causes a user's password to expire:

ALTER USER user PASSWORD EXPIRE;

If you cause a database user's password to expire with PASSWORD EXPIRE, then the user (or the DBA) must change the password before attempting to log in to the database following the expiration. Tools such as SQL*Plus allow the user to change the password on the first attempted login following the expiration.

ALTER USER scott IDENTIFIED BY password;

Will set/reset the users password.

See the alter user doc for more info

To expand on another answer, here is a fairly complete example which can cleanup the tmpdir even on exceptions:

import contextlib
import os
import shutil
import tempfile

@contextlib.contextmanager
def cd(newdir, cleanup=lambda: True):
    prevdir = os.getcwd()
    os.chdir(os.path.expanduser(newdir))
    try:
        yield
    finally:
        os.chdir(prevdir)
        cleanup()

@contextlib.contextmanager
def tempdir():
    dirpath = tempfile.mkdtemp()
    def cleanup():
        shutil.rmtree(dirpath)
    with cd(dirpath, cleanup):
        yield dirpath

def main():
    with tempdir() as dirpath:
        pass # do something here

Compress and Send Bitmap

The accepted answer will crash when the Bitmap is too large. I believe it's a 1MB limit. The Bitmap must be compressed into a different file format such as a JPG represented by a ByteArray, then it can be safely passed via an Intent.

Implementation

The function is contained in a separate thread using Kotlin Coroutines because the Bitmap compression is chained after the Bitmap is created from an url String. The Bitmap creation requires a separate thread in order to avoid Application Not Responding (ANR) errors.

Concepts Used

• Kotlin Coroutines notes.
• The Loading, Content, Error (LCE) pattern is used below. If interested you can learn more about it in this talk and video.
• LiveData is used to return the data. I've compiled my favorite LiveData resource in these notes.
• In Step 3, toBitmap() is a Kotlin extension function requiring that library to be added to the app dependencies.

Code

1. Compress Bitmap to JPG ByteArray after it has been created.

Repository.kt

suspend fun bitmapToByteArray(url: String) = withContext(Dispatchers.IO) {
    MutableLiveData<Lce<ContentResult.ContentBitmap>>().apply {
        postValue(Lce.Loading())
        postValue(Lce.Content(ContentResult.ContentBitmap(
            ByteArrayOutputStream().apply {
                try {                     
                    BitmapFactory.decodeStream(URL(url).openConnection().apply {
                        doInput = true
                        connect()
                    }.getInputStream())
                } catch (e: IOException) {
                   postValue(Lce.Error(ContentResult.ContentBitmap(ByteArray(0), "bitmapToByteArray error or null - ${e.localizedMessage}")))
                   null
                }?.compress(CompressFormat.JPEG, BITMAP_COMPRESSION_QUALITY, this)
           }.toByteArray(), "")))
        }
    }

ViewModel.kt

//Calls bitmapToByteArray from the Repository
private fun bitmapToByteArray(url: String) = liveData {
    emitSource(switchMap(repository.bitmapToByteArray(url)) { lce ->
        when (lce) {
            is Lce.Loading -> liveData {}
            is Lce.Content -> liveData {
                emit(Event(ContentResult.ContentBitmap(lce.packet.image, lce.packet.errorMessage)))
            }
            is Lce.Error -> liveData {
                Crashlytics.log(Log.WARN, LOG_TAG,
                        "bitmapToByteArray error or null - ${lce.packet.errorMessage}")
            }
        }
    })
}

2. Pass image as ByteArray via an Intent.

In this sample it's passed from a Fragment to a Service. It's the same concept if being shared between two Activities.

Fragment.kt

ContextCompat.startForegroundService(
    context!!,
    Intent(context, AudioService::class.java).apply {
        action = CONTENT_SELECTED_ACTION
        putExtra(CONTENT_SELECTED_BITMAP_KEY, contentPlayer.image)
    })

3. Convert ByteArray back to Bitmap.

Utils.kt

fun ByteArray.byteArrayToBitmap(context: Context) =
    run {
        BitmapFactory.decodeByteArray(this, BITMAP_OFFSET, size).run {
            if (this != null) this
            // In case the Bitmap loaded was empty or there is an error I have a default Bitmap to return.
            else AppCompatResources.getDrawable(context, ic_coinverse_48dp)?.toBitmap()
        }
    }