Programs & Examples On #Arrow keys

I'm Just a starter, but i'v created a char(for example "b"), and I do b = _getch(); (its a conio.h library's command) And check

If (b == -32)
b = _getch();

And do check for the keys (72 up, 80 down, 77 right, 75 left)

For maintainability, I would attach the "blocking" handler on the element itself (in your case, the canvas).

theCanvas.onkeydown = function (e) {
    if (e.key === 'ArrowUp' || e.key === 'ArrowDown') {
        e.view.event.preventDefault();
    }
}

Why not simply do window.event.preventDefault()? MDN states:

window.event is a proprietary Microsoft Internet Explorer property which is only available while a DOM event handler is being called. Its value is the Event object currently being handled.

Further readings:

• https://developer.mozilla.org/en-US/docs/Web/API/UIEvent/view
• https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/key

.. you can cleanup your nested fragment in the parent fragment's destroyview method:

@Override
    public void onDestroyView() {

      try{
        FragmentTransaction transaction = getSupportFragmentManager()
                .beginTransaction();

        transaction.remove(nestedFragment);

        transaction.commit();
      }catch(Exception e){
      }

        super.onDestroyView();
    }

You can use something like this:

printf("%.2f", number);

If you need to use the string for something other than printing out, use the NumberFormat class:

NumberFormat formatter = new DecimalFormatter("#.##");
String s = formatter.format(3.14159265); // Creates a string containing "3.14"

Post data to backend using retrofit

 implementation 'com.squareup.retrofit2:retrofit:2.8.1'
 implementation 'com.squareup.retrofit2:converter-gson:2.8.1'
 implementation 'com.google.code.gson:gson:2.8.6'
 implementation 'com.squareup.okhttp3:logging-interceptor:4.5.0'

public interface UserService {
  @POST("users/")
  Call<UserResponse> userRegistration(@Body UserRegistration 
    userRegistration);
}



public class ApiClient {

    private static Retrofit getRetrofit(){
        HttpLoggingInterceptor httpLoggingInterceptor = new HttpLoggingInterceptor();
        httpLoggingInterceptor.setLevel(HttpLoggingInterceptor.Level.BODY);

        OkHttpClient okHttpClient = new OkHttpClient
                .Builder()
                .addInterceptor(httpLoggingInterceptor)
                .build();

        Retrofit retrofit = new Retrofit.Builder()
                .baseUrl("http://api.larntech.net/")
                .addConverterFactory(GsonConverterFactory.create())
                .client(okHttpClient)
                .build();



        return retrofit;

    }


    public static UserService getService(){
        UserService userService = getRetrofit().create(UserService.class);
        return userService;
    }

}

In case you have a predicate and/or a non empty output to fill with the filtered string, I would consider:

output.reserve(str.size() + output.size());  
std::copy_if(str.cbegin(), 
             str.cend(), 
             std::back_inserter(output), 
             predicate});

In the original question the predicate is [](char c){return c != 'a';}

Note: Once it happened that I accidentally had a space before my database name such as mydatabase instead of mydatabase, phpmyadmin won't show the space, but if you run it from the command line interface of mysql, such as mysql -u the_user -p then show databases, you'll be able to see the space.

Yes there is a difference between the functions but the way you are using them in this case will result in the same outcome.

path.join returns a normalized path by merging two paths together. It can return an absolute path, but it doesn't necessarily always do so.

For instance:

path.join('app/libs/oauth', '/../ssl')

resolves to app/libs/ssl

path.resolve, on the other hand, will resolve to an absolute path.

For instance, when you run:

path.resolve('bar', '/foo');

The path returned will be /foo since that is the first absolute path that can be constructed.

However, if you run:

path.resolve('/bar/bae', '/foo', 'test');

The path returned will be /foo/test again because that is the first absolute path that can be formed from right to left.

If you don't provide a path that specifies the root directory then the paths given to the resolve function are appended to the current working directory. So if your working directory was /home/mark/project/:

path.resolve('test', 'directory', '../back');

resolves to

/home/mark/project/test/back

Using __dirname is the absolute path to the directory containing the source file. When you use path.resolve or path.join they will return the same result if you give the same path following __dirname. In such cases it's really just a matter of preference.

git difftool <commit> .

This will compare the commit you want with your local files. Don't forget the dot in the end (for local).

For example, to compare your local files with some commit:

git difftool 1db1ef2490733c1877ad0fb5e8536d2935566341 .

(and you don't need git fetch, unless comparing to new commits is needed)

no that cannot work(not with real data):

String sql = "INSERT INTO course " +
        "VALUES (course_code, course_desc, course_chair)";
    stmt.executeUpdate(sql);

change it to:

String sql = "INSERT INTO course (course_code, course_desc, course_chair)" +
        "VALUES (?, ?, ?)";

Create a PreparedStatment with that sql and insert the values with index:

PreparedStatement preparedStatement = conn.prepareStatement(sql);
preparedStatement.setString(1, "Test");
preparedStatement.setString(2, "Test2");
preparedStatement.setString(3, "Test3");
preparedStatement.executeUpdate(); 

button.setBackgroundColor(getResources().getColor(R.color.red);

Sets the background color for this view. Parameters: color the color of the background

R.color.red is a reference generated at the compilation in gen.

Yes.

If the scrollbar is not the browser scrollbar, then it will be built of regular HTML elements (probably divs and spans) and can thus be styled (or will be Flash, Java, etc and can be customized as per those environments).

The specifics depend on the DOM structure used.

Kotlin one-liner

etxt_userinput.filters = arrayOf<InputFilter>(InputFilter.LengthFilter(100))

where 100 is the maxLength

He who is Shy^* gave you the germ of an answer, but only the germ. The basic technique for converting a value into a string in the C pre-processor is indeed via the '#' operator, but a simple transliteration of the proposed solution gets a compilation error:

#define TEST_FUNC test_func
#define TEST_FUNC_NAME #TEST_FUNC

#include <stdio.h>
int main(void)
{
    puts(TEST_FUNC_NAME);
    return(0);
}

The syntax error is on the 'puts()' line - the problem is a 'stray #' in the source.

In section 6.10.3.2 of the C standard, 'The # operator', it says:

Each # preprocessing token in the replacement list for a function-like macro shall be followed by a parameter as the next preprocessing token in the replacement list.

The trouble is that you can convert macro arguments to strings -- but you can't convert random items that are not macro arguments.

So, to achieve the effect you are after, you most certainly have to do some extra work.

#define FUNCTION_NAME(name) #name
#define TEST_FUNC_NAME  FUNCTION_NAME(test_func)

#include <stdio.h>

int main(void)
{
    puts(TEST_FUNC_NAME);
    return(0);
}

I'm not completely clear on how you plan to use the macros, and how you plan to avoid repetition altogether. This slightly more elaborate example might be more informative. The use of a macro equivalent to STR_VALUE is an idiom that is necessary to get the desired result.

#define STR_VALUE(arg)      #arg
#define FUNCTION_NAME(name) STR_VALUE(name)

#define TEST_FUNC      test_func
#define TEST_FUNC_NAME FUNCTION_NAME(TEST_FUNC)

#include <stdio.h>

static void TEST_FUNC(void)
{
    printf("In function %s\n", TEST_FUNC_NAME);
}

int main(void)
{
    puts(TEST_FUNC_NAME);
    TEST_FUNC();
    return(0);
}

^{* At the time when this answer was first written, shoosh's name used 'Shy' as part of the name.}

This answer uses bits of other answers, but hopefully it'll be a bit clearer as to the circumstances. You never specified what you were rsyncing - a single directory entry or multiple files.

So let's assume you are moving a source directory entry across, and not just moving the files contained in it.

Let's say you have a directory locally called data/myappdata/ and you have a load of subdirectories underneath this. You have data/ on your target machine but no data/myappdata/ - this is easy enough:

rsync -rvv /path/to/data/myappdata/ user@host:/remote/path/to/data/myappdata

You can even use a different name for the remote directory:

rsync -rvv --recursive /path/to/data/myappdata user@host:/remote/path/to/data/newdirname

If you're just moving some files and not moving the directory entry that contains them then you would do:

rsync -rvv /path/to/data/myappdata/*.txt user@host:/remote/path/to/data/myappdata/

and it will create the myappdata directory for you on the remote machine to place your files in. Again, the data/ directory must exist on the remote machine.

Incidentally, my use of -rvv flag is to get doubly verbose output so it is clear about what it does, as well as the necessary recursive behaviour.

Just to show you what I get when using rsync (3.0.9 on Ubuntu 12.04)

$ rsync -rvv *.txt [email protected]:/tmp/newdir/
opening connection using: ssh -l user remote.machine rsync --server -vvre.iLsf . /tmp/newdir/
[email protected]'s password:
sending incremental file list
created directory /tmp/newdir
delta-transmission enabled
bar.txt
foo.txt
total: matches=0  hash_hits=0  false_alarms=0 data=0

Hope this clears this up a little bit.

You can use the -notmatch operator to get the lines that don't have the characters you are interested in.

     Get-Content $FileName | foreach-object { 
     if ($_ -notmatch $arrayofStringsNotInterestedIn) { $) }

You will need these imports...

import javax.servlet.*;
import javax.servlet.http.*;

And, if you're using Maven, you'll also need this in the dependencies block of the pom.xml file in your project's base directory.

<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>javax.servlet-api</artifactId>
    <version>3.0.1</version>
    <scope>provided</scope>
</dependency>

Then the above-listed fix by Jason will work:

@ResponseBody
    public ResponseEntity<Boolean> saveData(HttpServletRequest request,
        HttpServletResponse response, Model model){
        String jsonString = request.getParameter("json");
    }

In my case the /usr/local/Frameworks didn't even exist, so I did:

sudo mkdir /usr/local/Frameworks
sudo chown -R $(whoami) /usr/local/Frameworks

And then everything worked as expected.

If it says the API key is listed as a header, more than likely you need to set it in the headers option of your http request. Normally something like this :

headers: {'Authorization': '[your API key]'}

Here is an example from another Question

$http({method: 'GET', url: '[the-target-url]', headers: {
  'Authorization': '[your-api-key]'}
});

Edit : Just saw you wanted to store the response in a variable. In this case I would probably just use AJAX. Something like this :

$.ajax({ 
   type : "GET", 
   url : "[the-target-url]", 
   beforeSend: function(xhr){xhr.setRequestHeader('Authorization', '[your-api-key]');},
   success : function(result) { 
       //set your variable to the result 
   }, 
   error : function(result) { 
     //handle the error 
   } 
 }); 

I got this from this question and I'm at work so I can't test it at the moment but looks solid

Edit 2: Pretty sure you should be able to use this line :

headers: {'Authorization': '[your API key]'},

instead of the beforeSend line in the first edit. This may be simpler for you

Change the customBinding in the web.config to use larger defaults. I picked 2MB as it is a reasonable size. Of course setting it to 2GB (as your code suggests) will work but it does leave you more vulnerable to attacks. Pick a size that is larger than your largest request but isn't overly large.

Check this : Using Large Message Requests in Silverlight with WCF

<system.serviceModel>
   <behaviors>
     <serviceBehaviors>
       <behavior name="TestLargeWCF.Web.MyServiceBehavior">
         <serviceMetadata httpGetEnabled="true"/>
         <serviceDebug includeExceptionDetailInFaults="false"/>
       </behavior>
     </serviceBehaviors>
   </behaviors>
   <bindings>
     <customBinding>
       <binding name="customBinding0">
         <binaryMessageEncoding />
         <!-- Start change -->
         <httpTransport maxReceivedMessageSize="2097152"
                        maxBufferSize="2097152"
                        maxBufferPoolSize="2097152"/>
         <!-- Stop change -->
       </binding>
     </customBinding>
   </bindings>
   <serviceHostingEnvironment aspNetCompatibilityEnabled="true"/>
   <services>
     <service behaviorConfiguration="Web.MyServiceBehavior" name="TestLargeWCF.Web.MyService">
       <endpoint address=""
                binding="customBinding"
                bindingConfiguration="customBinding0"
                contract="TestLargeWCF.Web.MyService"/>
       <endpoint address="mex"
                binding="mexHttpBinding"
                contract="IMetadataExchange"/>
     </service>
   </services>
 </system.serviceModel> 

For me, this problem is caused by opening the cloned project with "open an existing project" instead of "import".

The file "setting.gradle" already exists in the downloaded project. However, it doesn't get picked up by Android Studio using "open an existing project" option, only "import" will impose Android Studio to interpret the whole project settings.

The same idea has been mentioned implicitly in M.Palsich's answer.

Supervised Machine Learning

"The process of an algorithm learning from training dataset and predict the output. "

Accuracy of predicted output directly proportional to the training data (length)

Supervised learning is where you have input variables (x) (training dataset) and an output variable (Y) (testing dataset) and you use an algorithm to learn the mapping function from the input to the output.

Y = f(X)

Major types:

• Classification (discrete y-axis)
• Predictive (continuous y-axis)

Algorithms:

• Classification Algorithms:

  Neural Networks  
  Naïve Bayes classifiers  
  Fisher linear discriminant  
  KNN 
  Decision Tree 
  Super Vector Machines
  

• Predictive Algorithms:

  Nearest  neighbor  
  Linear Regression,Multi Regression 
  

Application areas:

1. Classifying emails as spam
2. Classifying whether patient has disease or not

3. Voice Recognition

4. Predict the HR select particular candidate or not

5. Predict the stock market price

Is there a way to PREVENT the browser scrolling to its past position, or to re-scroll to the top AFTER it does its thing?

The following jquery solution works for me:

$(window).unload(function() {
    $('body').scrollTop(0);
});

If you have no primary key, You can insert if not exist, then do an update. The table must contain at least one entry before using this.

INSERT INTO Test 
   (id, name)
   SELECT 
      101 as id, 
      'Bob' as name
   FROM Test
       WHERE NOT EXISTS(SELECT * FROM Test WHERE id = 101 and name = 'Bob') LIMIT 1;

Update Test SET id='101' WHERE name='Bob';

Use either. They are both equally (in)secure, as in many cases SERVER_NAME is just populated from HTTP_HOST anyway. I normally go for HTTP_HOST, so that the user stays on the exact host name they started on. For example if I have the same site on a .com and .org domain, I don't want to send someone from .org to .com, particularly if they might have login tokens on .org that they'd lose if sent to the other domain.

Either way, you just need to be sure that your webapp will only ever respond for known-good domains. This can be done either (a) with an application-side check like Gumbo's, or (b) by using a virtual host on the domain name(s) you want that does not respond to requests that give an unknown Host header.

The reason for this is that if you allow your site to be accessed under any old name, you lay yourself open to DNS rebinding attacks (where another site's hostname points to your IP, a user accesses your site with the attacker's hostname, then the hostname is moved to the attacker's IP, taking your cookies/auth with it) and search engine hijacking (where an attacker points their own hostname at your site and tries to make search engines see it as the ‘best’ primary hostname).

Apparently the discussion is mainly about $_SERVER['PHP_SELF'] and why you shouldn't use it in the form action attribute without proper escaping to prevent XSS attacks.

Pfft. Well you shouldn't use anything in any attribute without escaping with htmlspecialchars($string, ENT_QUOTES), so there's nothing special about server variables there.

Use the -H header again before the Authorization:Basic things. So it will be

curl -i \
    -H 'Accept:application/json' \
    -H 'Authorization:Basic BASE64_string' \
    http://example.com

Here, BASE64_string = Base64 of username:password

You can transfer value from controller using ViewData[""].

ViewData["hdnFlag"] = userId;
return View();

Now, In you view.

@{
    var localVar = ViewData["hdnFlag"]
}
<input type="hidden" asp-for="@localVar" />

Hope this will help...

I found myself in a situation where using the solution selected

$(document).ready(function() {
$('select').material_select();
}); 

for whatever reason was throwing errors because the material_select() function could not be found. It was not possible to just say <select class="browser-default... Because I was using a framework which auto-rendered the the forms. So my solution was to add the class using js(Jquery)

<script>
 $(document).ready(function() {
   $('select').attr("class", "browser-default")
});

For me this code worked in JavaScript like a charm!

<%= session.getAttribute("variableName")%>

hope it helps...

Change the function that you get one single Result=[array, listp, freep]. So there is only one result to be displayed

It depends on what you are intending to do with it.

Sets are significantly faster when it comes to determining if an object is present in the set (as in x in s), but are slower than lists when it comes to iterating over their contents.

You can use the timeit module to see which is faster for your situation.

you may use operator . $array3 = $array1.$array2;

See the defaultValue property of a text input, it's also used when you reset the form by clicking an <input type="reset"/> button (http://www.w3schools.com/jsref/prop_text_defaultvalue.asp )

btw, defaultValue and placeholder text are different concepts, you need to see which one better fits your needs

Install yajl-tools with the command below:

sudo apt-get install yajl-tools

then,

echo '{"foo": "lorem", "bar": "ipsum"}' | json_reformat

I had the same issue and i solved it by resetting the adb on eclipse.

on eclipse Go to:

DDMS(top right corner) -> Devices -> reset adb

What you need it an SSH connection and GitHub init into your project. I will explain under Linux machine.

Let's start with some easy stuff: navigate into your project in the terminal, and use:

git init
git add .
git commit 

now let's add SSH into your machine: use ssh-keygen -t rsa -C "[email protected]" and copy the public key, then add it to your GitHub repo Deploy keys -> add one back to your machine project now launch: git push origin master if there is an error config your .github/config by nano .github/config and change the URL to ssh one by url = [email protected]:username/repo.... and that's it

git pull origin master

this will sync your master to the central repo and if new branches are pushed to the central repo it will also update your clone copy.

for counting:

$('.yourClass').length;

should work fine.

storing in a variable is as easy as:

var count = $('.yourClass').length;

1. Right-click on the tables node and choose New Table...
2. With the table designer open, open the properties window (view -> Properties Window).
3. You can change the schema that the table will be made in by choosing a schema in the properties window.

defaultdict() is your friend!

For a two dimensional dictionary you can do:

d = defaultdict(defaultdict)
d[1][2] = 3

For more dimensions you can:

d = defaultdict(lambda :defaultdict(defaultdict))
d[1][2][3] = 4

final adds an explicit intent to not have your function overridden, and will cause a compiler error should this be violated:

struct A {
    virtual int foo(); // #1
};
struct B : A {
    int foo();
};

As the code stands, it compiles, and B::foo overrides A::foo. B::foo is also virtual, by the way. However, if we change #1 to virtual int foo() final, then this is a compiler error, and we are not allowed to override A::foo any further in derived classes.

Note that this does not allow us to "reopen" a new hierarchy, i.e. there's no way to make B::foo a new, unrelated function that can be independently at the head of a new virtual hierarchy. Once a function is final, it can never be declared again in any derived class.

This is a little library that should help you with hexadecimals in Java: https://github.com/PatrykSitko/HEX4J

It can convert from and to hexadecimals. It supports:

• byte
• boolean
• char
• char[]
• String
• short
• int
• long
• float
• double (signed and unsigned)

With it, you can convert your String to hexadecimal and the hexadecimal to a float/double.

Example:

String hexValue = HEX4J.Hexadecimal.from.String("Hello World");
double doubleValue = HEX4J.Hexadecimal.to.Double(hexValue);

Change the input type to "button". As T.J. and Pav said, the form is getting submitted. Your Javascript looks correct, and I commend you for trying it out the non-JQuery way :)

Here is another. We had a need to provide friendly names for our EnumValues. We used the System.ComponentModel.DescriptionAttribute to show a custom string value for each enum value.

public static class StaticClass
{
    public static string GetEnumDescription(Enum currentEnum)
    {
        string description = String.Empty;
        DescriptionAttribute da;

        FieldInfo fi = currentEnum.GetType().
                    GetField(currentEnum.ToString());
        da = (DescriptionAttribute)Attribute.GetCustomAttribute(fi,
                    typeof(DescriptionAttribute));
        if (da != null)
            description = da.Description;
        else
            description = currentEnum.ToString();

        return description;
    }

    public static List<string> GetEnumFormattedNames<TEnum>()
    {
        var enumType = typeof(TEnum);
        if (enumType == typeof(Enum))
            throw new ArgumentException("typeof(TEnum) == System.Enum", "TEnum");

        if (!(enumType.IsEnum))
            throw new ArgumentException(String.Format("typeof({0}).IsEnum == false", enumType), "TEnum");

        List<string> formattedNames = new List<string>();
        var list = Enum.GetValues(enumType).OfType<TEnum>().ToList<TEnum>();

        foreach (TEnum item in list)
        {
            formattedNames.Add(GetEnumDescription(item as Enum));
        }

        return formattedNames;
    }
}

In Use

 public enum TestEnum
 { 
        [Description("Something 1")]
        Dr = 0,
        [Description("Something 2")]
        Mr = 1
 }



    static void Main(string[] args)
    {

        var vals = StaticClass.GetEnumFormattedNames<TestEnum>();
    }

This will end returning "Something 1", "Something 2"

Although the answer I originally marked as chosen is correct and achieves what I asked there is a better way of doing this (which others acknowledged but didn't go into). A composite unique index should be created on the table consisting of fund_id and date.

ALTER TABLE funds ADD UNIQUE KEY `fund_date` (`fund_id`, `date`);

Then when inserting a record add the condition when a conflict is encountered:

INSERT INTO funds (`fund_id`, `date`, `price`)
    VALUES (23, DATE('2013-02-12'), 22.5)
        ON DUPLICATE KEY UPDATE `price` = `price`; --this keeps the price what it was (no change to the table) or:

INSERT INTO funds (`fund_id`, `date`, `price`)
    VALUES (23, DATE('2013-02-12'), 22.5)
        ON DUPLICATE KEY UPDATE `price` = 22.5; --this updates the price to the new value

This will provide much better performance to a sub-query and the structure of the table is superior. It comes with the caveat that you can't have NULL values in your unique key columns as they are still treated as values by MySQL.

I appreciate this question and all the info with it. I have something in mind that's kind of a question and an answer when it comes to String.Index.

I'm trying to see if there is an O(1) way to access a Substring (or Character) inside a String because string.index(startIndex, offsetBy: 1) is O(n) speed if you look at the definition of index function. Of course we can do something like:

let characterArray = Array(string)

then access any position in the characterArray however SPACE complexity of this is n = length of string, O(n) so it's kind of a waste of space.

I was looking at Swift.String documentation in Xcode and there is a frozen public struct called Index. We can initialize is as:

let index = String.Index(encodedOffset: 0)

Then simply access or print any index in our String object as such:

print(string[index])

Note: be careful not to go out of bounds`

This works and that's great but what is the run-time and space complexity of doing it this way? Is it any better?

If you're using greasemonkey, it's possible the page isn't ready for the javascript yet. You may need to use window.onReady.

var inputs;

function doThisWhenReady() {
    inputs = document.getElementsByTagName('input');

    //Other code here...
}

window.onReady = doThisWhenReady;

it's simple , and it's really worked for me .

run you wamp server => click right mouse button => and click on "put online"

then open your cmd as an administrateur , and pass in this commande word

ipconfig => and press enter

then lot of adresses show-up , then you have just to take the first one , it's look like this example: Adresse IPv4. . . . . . . . . . . . . .: 192.168.67.190 well done ! , that's the adresse, that you will use to cennecte to your wampserver in local.

Try to insert this:

DriverManager.registerDriver(new com.mysql.jdbc.Driver());

before getting the JDBC Connection.

Based on what React Docs say:

Handling Multiple Inputs. When you need to handle multiple controlled input elements, you can add a name attribute to each element and let the handler function choose what to do based on the value of event.target.name.

For example:

class App extends React.Component {
  constructor(props) {
    super(props);
    this.state = {};
  }

  handleChange = e => {
    const { name, value } = e.target;

    this.setState({
      [name]: value
    });
  };

  render() {
    return (
      <div className="radio-buttons">
        Windows
        <input
          id="windows"
          value="windows"
          name="platform"
          type="radio"
          onChange={this.handleChange}
        />
        Mac
        <input
          id="mac"
          value="mac"
          name="platform"
          type="radio"
          onChange={this.handleChange}
        />
        Linux
        <input
          id="linux"
          value="linux"
          name="platform"
          type="radio"
          onChange={this.handleChange}
        />
      </div>
    );
  }
}

Link to example: https://codesandbox.io/s/6l6v9p0qkr

At first, none of the radio buttons is selected so this.state is an empty object, but whenever the radio button is selected this.state gets a new property with the name of the input and its value. It eases then to check whether user selected any radio-button like:

const isSelected = this.state.platform ? true : false;

EDIT:

With version 16.7-alpha of React there is a proposal for something called hooks which will let you do this kind of stuff easier:

In the example below there are two groups of radio-buttons in a functional component. Still, they have controlled inputs:

function App() {
  const [platformValue, plaftormInputProps] = useRadioButtons("platform");
  const [genderValue, genderInputProps] = useRadioButtons("gender");
  return (
    <div>
      <form>
        <fieldset>
          Windows
          <input
            value="windows"
            checked={platformValue === "windows"}
            {...plaftormInputProps}
          />
          Mac
          <input
            value="mac"
            checked={platformValue === "mac"}
            {...plaftormInputProps}
          />
          Linux
          <input
            value="linux"
            checked={platformValue === "linux"}
            {...plaftormInputProps}
          />
        </fieldset>
        <fieldset>
          Male
          <input
            value="male"
            checked={genderValue === "male"}
            {...genderInputProps}
          />
          Female
          <input
            value="female"
            checked={genderValue === "female"}
            {...genderInputProps}
          />
        </fieldset>
      </form>
    </div>
  );
}

function useRadioButtons(name) {
  const [value, setState] = useState(null);

  const handleChange = e => {
    setState(e.target.value);
  };

  const inputProps = {
    name,
    type: "radio",
    onChange: handleChange
  };

  return [value, inputProps];
}

Working example: https://codesandbox.io/s/6l6v9p0qkr

Maybe this seems ugly, but why not just run cat and let it wait for input forever?

How do I select multiple columns by labels in pandas?

Multiple label-based range slicing is not easily supported with pandas, but position-based slicing is, so let's try that instead:

loc = df.columns.get_loc
df.iloc[:, np.r_[loc('A'):loc('C')+1, loc('E'), loc('G'):loc('I')+1]]

          A         B         C         E         G         H         I
0 -1.666330  0.321260 -1.768185 -0.034774  0.023294  0.533451 -0.241990
1  0.911498  3.408758  0.419618 -0.462590  0.739092  1.103940  0.116119
2  1.243001 -0.867370  1.058194  0.314196  0.887469  0.471137 -1.361059
3 -0.525165  0.676371  0.325831 -1.152202  0.606079  1.002880  2.032663
4  0.706609 -0.424726  0.308808  1.994626  0.626522 -0.033057  1.725315
5  0.879802 -1.961398  0.131694 -0.931951 -0.242822 -1.056038  0.550346
6  0.199072  0.969283  0.347008 -2.611489  0.282920 -0.334618  0.243583
7  1.234059  1.000687  0.863572  0.412544  0.569687 -0.684413 -0.357968
8 -0.299185  0.566009 -0.859453 -0.564557 -0.562524  0.233489 -0.039145
9  0.937637 -2.171174 -1.940916 -1.553634  0.619965 -0.664284 -0.151388

Note that the +1 is added because when using iloc the rightmost index is exclusive.

Comments on Other Solutions

• filter is a nice and simple method for OP's headers, but this might not generalise well to arbitrary column names.

• The "location-based" solution with loc is a little closer to the ideal, but you cannot avoid creating intermediate DataFrames (that are eventually thrown out and garbage collected) to compute the final result range -- something that we would ideally like to avoid.

• Lastly, "pick your columns directly" is good advice as long as you have a manageably small number of columns to pick. It will, however not be applicable in some cases where ranges span dozens (or possibly hundreds) of columns.

You are mixing mysqli and mysql extensions, which will not work.

You need to use

$myConnection= mysqli_connect("$db_host","$db_username","$db_pass") or die ("could not connect to mysql"); 

mysqli_select_db($myConnection, "mrmagicadam") or die ("no database");   

mysqli has many improvements over the original mysql extension, so it is recommended that you use mysqli.

Both approaches call a constructor, they just call different ones. This code:

var albumData = new Album 
                {
                     Name = "Albumius",
                     Artist = "Artistus",
                     Year = 2013
                };

is syntactic shorthand for this equivalent code:

var albumData = new Album();
albumData.Name = "Albumius";
albumData.Artist = "Artistus";
albumData.Year = 2013;

The two are almost identical after compilation (close enough for nearly all intents and purposes). So if the parameterless constructor wasn't public:

public Album() { }

then you wouldn't be able to use the object initializer at all anyway. So the main question isn't which to use when initializing the object, but which constructor(s) the object exposes in the first place. If the object exposes two constructors (like the one in your example), then one can assume that both ways are equally valid for constructing an object.

Sometimes objects don't expose parameterless constructors because they require certain values for construction. Though in cases like that you can still use the initializer syntax for other values. For example, suppose you have these constructors on your object:

private Album() { }
public Album(string name)
{
    this.Name = name;
}

Since the parameterless constructor is private, you can't use that. But you can use the other one and still make use of the initializer syntax:

var albumData = new Album("Albumius")
                {
                     Artist = "Artistus",
                     Year = 2013
                };

The post-compilation result would then be identical to:

var albumData = new Album("Albumius");
albumData.Artist = "Artistus";
albumData.Year = 2013;

Call the parent method with the parent scope resolution operator.

Parent::method()

class Primate {
public:
    void whatAmI(){
        cout << "I am of Primate order";
    }
};

class Human : public Primate{
public:
    void whatAmI(){
        cout << "I am of Human species";
    }
    void whatIsMyOrder(){
        Primate::whatAmI(); // <-- SCOPE RESOLUTION OPERATOR
    }
};

As an exercise, I would suggest doing the following:

public void save(String fileName) throws FileNotFoundException {
    PrintWriter pw = new PrintWriter(new FileOutputStream(fileName));
    for (Club club : clubs)
        pw.println(club.getName());
    pw.close();
}

This will write the name of each club on a new line in your file.

Soccer
Chess
Football
Volleyball
...

I'll leave the loading to you. Hint: You wrote one line at a time, you can then read one line at a time.

Every class in Java extends the Object class. As such you can override its methods. In this case, you should be interested by the toString() method. In your Club class, you can override it to print some message about the class in any format you'd like.

public String toString() {
    return "Club:" + name;
}

You could then change the above code to:

public void save(String fileName) throws FileNotFoundException {
    PrintWriter pw = new PrintWriter(new FileOutputStream(fileName));
    for (Club club : clubs)
         pw.println(club); // call toString() on club, like club.toString()
    pw.close();
}

<c:if test="${companies.size() > 0}">

</c:if>

This syntax works only in EL 2.2 or newer (Servlet 3.0 / JSP 2.2 or newer). If you're facing a XML parsing error because you're using JSPX or Facelets instead of JSP, then use gt instead of >.

<c:if test="${companies.size() gt 0}">

</c:if>

If you're actually facing an EL parsing error, then you're probably using a too old EL version. You'll need JSTL fn:length() function then. From the documentation:

length( java.lang.Object) - Returns the number of items in a collection, or the number of characters in a string.

Put this at the top of JSP page to allow the fn namespace:

<%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>

Or if you're using JSPX or Facelets:

<... xmlns:fn="http://java.sun.com/jsp/jstl/functions">

And use like this in your page:

<p>The length of the companies collection is: ${fn:length(companies)}</p>

So to test with length of a collection:

<c:if test="${fn:length(companies) gt 0}">

</c:if>

Alternatively, for this specific case you can also simply use the EL empty operator:

<c:if test="${not empty companies}">

</c:if>

I wrote a simple connect middleware for simulating url-rewriting on grunt projects. https://gist.github.com/muratcorlu/5803655

You can use like that:

module.exports = function(grunt) {
  var urlRewrite = require('grunt-connect-rewrite');

  // Project configuration.
  grunt.initConfig({
    connect: {
      server: {
        options: {
          port: 9001,
          base: 'build',
          middleware: function(connect, options) {
            // Return array of whatever middlewares you want
            return [
              // redirect all urls to index.html in build folder
              urlRewrite('build', 'index.html'),

              // Serve static files.
              connect.static(options.base),

              // Make empty directories browsable.
              connect.directory(options.base)
            ];
          }
        }
      }
    }
  })
};

Asp.net codebehind runs on server first and then page is rendered to client (browser). Codebehind has no access to client side (javascript, html) because it lives on server only.

So, either use ajax and sent value of label to code behind. You can use PageMethods , or simply post the page to server where codebehind lives, so codebehind can know the updated value :)

get_or_create returns a tuple.

customer.source, created = Source.objects.get_or_create(name="Website")

This is my personal solution, based on the information here (this thread):

var Divs = new Array();    
var Elemns = document.getElementsByClassName("divisao");
    try {
        Divs = Elemns.prototype.slice.call(Elemns);
    } catch(e) {
        Divs = $A(Elemns);
    }

Where $A was described by Gareth Davis in his post:

function $A(iterable) {
  if (!iterable) return [];
  if ('toArray' in Object(iterable)) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

If browser supports the best way, ok, otherwise will use the cross browser.

The shortest version:

var myArray = ['January', 'February', 'March']; 
var rand = myArray[(Math.random() * myArray.length) | 0]

if you want to populate a table in SQL SERVER you can use while statement as follows:

declare @llenandoTabla INT = 0;
while @llenandoTabla < 10000
begin
insert into employeestable // Name of my table
(ID, FIRSTNAME, LASTNAME, GENDER, SALARY) // Parameters of my table
VALUES 
(555, 'isaias', 'perez', 'male', '12220') //values
set @llenandoTabla = @llenandoTabla + 1;
end

Hope it helps.

// Store the formatted string in 'result'
String result = String.format("%4d", i * j);

// Write the result to standard output
System.out.println( result );

See format and its syntax

As mentioned here:

import urllib
urllib.urlretrieve ("http://randomsite.com/file.gz", "file.gz")

EDIT: If you still want to use requests, take a look at this question or this one.

If you want to add your custom headers to ALL requests, you can change the defaults on $httpProvider to always add this header…

app.config(['$httpProvider', function ($httpProvider) {
    $httpProvider.defaults.headers.common = { 
        'Authorization': 'Basic d2VudHdvcnRobWFuOkNoYW5nZV9tZQ==',
        'Accept': 'application/json;odata=verbose'
      };
}]);

fgets would work for you. here is very good documentation on this :-
http://www.cplusplus.com/reference/cstdio/fgets/

If you don't want to use fgets, following method will work for you :-

int readline(FILE *f, char *buffer, size_t len)
{
   char c; 
   int i;

   memset(buffer, 0, len);

   for (i = 0; i < len; i++)
   {   
      int c = fgetc(f); 

      if (!feof(f)) 
      {   
         if (c == '\r')
            buffer[i] = 0;
         else if (c == '\n')
         {   
            buffer[i] = 0;

            return i+1;
         }   
         else
            buffer[i] = c; 
      }   
      else
      {   
         //fprintf(stderr, "read_line(): recv returned %d\n", c);
         return -1; 
      }   
   }   

   return -1; 
}

All of them have there own uses:

1. If you have an iterable and need to traverse unconditionally to all of them:

   for (iterable_type iterable_element : collection)

2. If you have an iterable but need to conditionally traverse:

   for (Iterator iterator = collection.iterator(); iterator.hasNext();)

3. If data-structure does not implement iterable:

   for (int i = 0; i < collection.length; i++)

I had this problem on Safari (iOS 10.3.3) - the browser was not redrawing until the touchend event fired. Fixed elements did not appear or were cut off.

The trick for me was adding transform: translate3d(0,0,0); to my fixed position element.

.fixed-position-on-mobile {
  position: fixed;
  transform: translate3d(0,0,0);
}

EDIT - I now know why the transform fixes the issue: hardware-acceleration. Adding the 3D transformation triggers the GPU acceleration making for a smooth transition. For more on hardware-acceleration checkout this article: http://blog.teamtreehouse.com/increase-your-sites-performance-with-hardware-accelerated-css.

Peter Lawrey's answer is great because it is simple and not depending on anything special, and it's the way you should do it. If you need something that removes subdirectories and their contents as well, use recursion:

void purgeDirectory(File dir) {
    for (File file: dir.listFiles()) {
        if (file.isDirectory())
            purgeDirectory(file);
        file.delete();
    }
}

To spare subdirectories and their contents (part of your question), modify as follows:

void purgeDirectoryButKeepSubDirectories(File dir) {
    for (File file: dir.listFiles()) {
        if (!file.isDirectory())
            file.delete();
    }
}

Or, since you wanted a one-line solution:

for (File file: dir.listFiles())
    if (!file.isDirectory())
        file.delete();

Using an external library for such a trivial task is not a good idea unless you need this library for something else anyway, in which case it is preferrable to use existing code. You appear to be using the Apache library anyway so use its FileUtils.cleanDirectory() method.

If you are planning on doing any kind of inheritance, then I would recommend this.constructor. This simple example should illustrate why:

class ConstructorSuper {
  constructor(n){
    this.n = n;
  }

  static print(n){
    console.log(this.name, n);
  }

  callPrint(){
    this.constructor.print(this.n);
  }
}

class ConstructorSub extends ConstructorSuper {
  constructor(n){
    this.n = n;
  }
}

let test1 = new ConstructorSuper("Hello ConstructorSuper!");
console.log(test1.callPrint());

let test2 = new ConstructorSub("Hello ConstructorSub!");
console.log(test2.callPrint());

• test1.callPrint() will log ConstructorSuper Hello ConstructorSuper! to the console
• test2.callPrint() will log ConstructorSub Hello ConstructorSub! to the console

The named class will not deal with inheritance nicely unless you explicitly redefine every function that makes a reference to the named Class. Here is an example:

class NamedSuper {
  constructor(n){
    this.n = n;
  }

  static print(n){
    console.log(NamedSuper.name, n);
  }

  callPrint(){
    NamedSuper.print(this.n);
  }
}

class NamedSub extends NamedSuper {
  constructor(n){
    this.n = n;
  }
}

let test3 = new NamedSuper("Hello NamedSuper!");
console.log(test3.callPrint());

let test4 = new NamedSub("Hello NamedSub!");
console.log(test4.callPrint());

• test3.callPrint() will log NamedSuper Hello NamedSuper! to the console
• test4.callPrint() will log NamedSuper Hello NamedSub! to the console

See all the above running in Babel REPL.

You can see from this that test4 still thinks it's in the super class; in this example it might not seem like a huge deal, but if you are trying to reference member functions that have been overridden or new member variables, you'll find yourself in trouble.

You can do:

timeStamp.toLocalDateTime().toLocalDate();

Note that timestamp.toLocalDateTime() will use the Clock.systemDefaultZone() time zone to make the conversion. This may or may not be what you want.

I'm not a Java developer so unfortunatly I can't comment on your code directly however I found this in an Oracle FAQ regarding the form of a connection string

jdbc:oracle:<drivertype>:<username/password>@<database>

From the Oracle JDBC FAQ

http://www.oracle.com/technetwork/database/enterprise-edition/jdbc-faq-090281.html#05_03

Hope that helps

The issue could be that your deployed files are not updated with the correct RMI methods. Check to see that your RMI interface has updated parameters, or updated data structures that your client does not have. Or that your RMI client has no parameters that differ from what your server version has.

This is just an educated guess. After re-deploying my server application's class files and re-testing, the problem of "Broken pipe" went away.

If all those kill process commands don't work for you, my suggestion is to check if you were using any other packages to run your node process.

I had the similar issue, and it was due to I was running my node process using PM2(a NPM package). The kill [processID] command disables the process but keeps the port occupied. Hence I had to go into PM2 and dump all node process to free up the port again.

For python 3.6.2:

import tensorflow as tf

print(tf.version.VERSION)

Use =~

for regular expression check Regular Expressions Tutorial Table of Contents

There is already an ISO standard for this; no need to invent your own scheme:

http://en.wikipedia.org/wiki/ISO_5218

Per the standard, the column should be called "Sex" and the 'closest' data type would be tinyint with a CHECK constraint or lookup table as appropriate.

You could keep it simple and use the native color translator:

Color red = ColorTranslator.FromHtml("#FF0000");
string redHex = ColorTranslator.ToHtml(red);

Then break the three color pairs into integer form:

int value = int.Parse(hexValue, System.Globalization.NumberStyles.HexNumber);

Reset all selection fields to the default option, where the attribute selected is defined.

$("#reset").on("click", function () {
    // Reset all selections fields to default option.
    $('select').each( function() {
        $(this).val( $(this).find("option[selected]").val() );
    });
});

You can use jQuery UI and do something like this

Html:

<button id="callConfirm">Confirm!</button>

<div id="dialog" title="Confirmation Required">
  Are you sure about this?
</div>?

Javascript:

$("#dialog").dialog({
   autoOpen: false,
   modal: true,
   buttons : {
        "Confirm" : function() {
            alert("You have confirmed!");            
        },
        "Cancel" : function() {
          $(this).dialog("close");
        }
      }
    });

$("#callConfirm").on("click", function(e) {
    e.preventDefault();
    $("#dialog").dialog("open");
});

?

I know you've found another solution, but for those like me who find this question, looking for the same thing, it can be achieved with requests as follows:

Firstly, as Marcus did, check the source of the login form to get three pieces of information - the url that the form posts to, and the name attributes of the username and password fields. In his example, they are inUserName and inUserPass.

Once you've got that, you can use a requests.Session() instance to make a post request to the login url with your login details as a payload. Making requests from a session instance is essentially the same as using requests normally, it simply adds persistence, allowing you to store and use cookies etc.

Assuming your login attempt was successful, you can simply use the session instance to make further requests to the site. The cookie that identifies you will be used to authorise the requests.

Example

import requests

# Fill in your details here to be posted to the login form.
payload = {
    'inUserName': 'username',
    'inUserPass': 'password'
}

# Use 'with' to ensure the session context is closed after use.
with requests.Session() as s:
    p = s.post('LOGIN_URL', data=payload)
    # print the html returned or something more intelligent to see if it's a successful login page.
    print p.text

    # An authorised request.
    r = s.get('A protected web page url')
    print r.text
        # etc...

This problem can be solved efficiently using the numpy_indexed library (disclaimer: I am its author); which was created to address problems of this type. npi.indices can be viewed as an n-dimensional generalisation of list.index. It will act on nd-arrays (along a specified axis); and also will look up multiple entries in a vectorized manner as opposed to a single item at a time.

a = np.random.rand(50, 60, 70)
i = np.random.randint(0, len(a), 40)
b = a[i]

import numpy_indexed as npi
assert all(i == npi.indices(a, b))

This solution has better time complexity (n log n at worst) than any of the previously posted answers, and is fully vectorized.

You need this instead:

if(s.contains("+"))

contains() method of String class does not take regular expression as a parameter, it takes normal text.

EDIT:

String s = "ddjdjdj+kfkfkf";

if(s.contains("+"))
{
    String parts[] = s.split("\\+");
    System.out.print(parts[0]);
}

OUTPUT:

ddjdjdj

From my own experience, it's hard to find a simple explanation why CORS is even a concern.

Once you understand why it's there, the headers and discussion becomes a lot clearer. I'll give it a shot in a few lines.

It's all about cookies. Cookies are stored on a client by their domain.

An example story: On your computer, there's a cookie for yourbank.com. Maybe your session is in there.

Key point: When a client makes a request to the server, it will send the cookies stored under the domain that the client is on.

You're logged in on your browser to yourbank.com. You request to see all your accounts. yourbank.com receives the pile of cookies and sends back its response (your accounts).

If another client makes a cross origin request to a server, those cookies are sent along, just as before. Ruh roh.

You browse to malicious.com. Malicious makes a bunch of requests to different banks, including yourbank.com.

Since the cookies are validated as expected, the server will authorize the response.

Those cookies get gathered up and sent along - and now, malicious.com has a response from yourbank.

Yikes.

So now, a few questions and answers become apparent:

• "Why don't we just block the browser from doing that?" Yep. CORS.
• "How do we get around it?" Have the server tell the request that CORS is OK.

I've used something like this before which addresses @scunliffes concern. It finds all instances of items with a class of (in this case .button), and assigns an ID and appends its index to the id name:

$(".button").attr('id', function (index) {_x000D_
 return "button-" + index;_x000D_
});

So let's say you have 3 items with the class name of .button on a page. The result would be adding a unique ID to all of them (in addition to their class of "button").

In this case, #button-0, #button-1, #button-2, respectively. This can come in very handy. Simply replace ".button" in the first line with whatever class you want to target, and replace "button" in the return statement with whatever you'd like your unique ID to be. Hope this helps!

Yup, this is possible of course. Here are several examples.

-- one way to do this
DECLARE @Cnt int

SELECT @Cnt = COUNT(SomeColumn)
FROM TableName
GROUP BY SomeColumn

-- another way to do the same thing
DECLARE @StreetName nvarchar(100)
SET @StreetName = (SELECT Street_Name from Streets where Street_ID = 123)

-- Assign values to several variables at once
DECLARE @val1 nvarchar(20)
DECLARE @val2 int
DECLARE @val3 datetime
DECLARE @val4 uniqueidentifier
DECLARE @val5 double

SELECT @val1 = TextColumn,
@val2 = IntColumn,
@val3 = DateColumn,
@val4 = GuidColumn,
@val5 = DoubleColumn
FROM SomeTable

The essential idea here is to select the data you want to sum, and then sum them. This selection of data can be done in several different ways, a few of which are shown below.

Boolean indexing

Arguably the most common way to select the values is to use Boolean indexing.

With this method, you find out where column 'a' is equal to 1 and then sum the corresponding rows of column 'b'. You can use loc to handle the indexing of rows and columns:

>>> df.loc[df['a'] == 1, 'b'].sum()
15

The Boolean indexing can be extended to other columns. For example if df also contained a column 'c' and we wanted to sum the rows in 'b' where 'a' was 1 and 'c' was 2, we'd write:

df.loc[(df['a'] == 1) & (df['c'] == 2), 'b'].sum()

Query

Another way to select the data is to use query to filter the rows you're interested in, select column 'b' and then sum:

>>> df.query("a == 1")['b'].sum()
15

Again, the method can be extended to make more complicated selections of the data:

df.query("a == 1 and c == 2")['b'].sum()

Note this is a little more concise than the Boolean indexing approach.

Groupby

The alternative approach is to use groupby to split the DataFrame into parts according to the value in column 'a'. You can then sum each part and pull out the value that the 1s added up to:

>>> df.groupby('a')['b'].sum()[1]
15

This approach is likely to be slower than using Boolean indexing, but it is useful if you want check the sums for other values in column a:

>>> df.groupby('a')['b'].sum()
a
1    15
2     8

The document and window are different objects and they have some different events. Using addEventListener() on them listens to events destined for a different object. You should use the one that actually has the event you are interested in.

For example, there is a "resize" event on the window object that is not on the document object.

For example, the "DOMContentLoaded" event is only on the document object.

So basically, you need to know which object receives the event you are interested in and use .addEventListener() on that particular object.

Here's an interesting chart that shows which types of objects create which types of events: https://developer.mozilla.org/en-US/docs/DOM/DOM_event_reference

If you are listening to a propagated event (such as the click event), then you can listen for that event on either the document object or the window object. The only main difference for propagated events is in timing. The event will hit the document object before the window object since it occurs first in the hierarchy, but that difference is usually immaterial so you can pick either. I find it generally better to pick the closest object to the source of the event that meets your needs when handling propagated events. That would suggest that you pick document over window when either will work. But, I'd often move even closer to the source and use document.body or even some closer common parent in the document (if possible).

For Android Studio 1.3 : (Method 1)

Step 1 : Open gradle.properties file in your Android Studio project.

Step 2 : Add this line at the end of the file

org.gradle.jvmargs=-XX\:MaxHeapSize\=256m -Xmx256m

Above methods seems to work but if in case it won't then do this (Method 2)

Step 1 : Start Android studio and close any open project (File > Close Project).

Step 2 : On Welcome window, Go to Configure > Settings.

Step 3 : Go to Build, Execution, Deployment > Compiler

Step 4 : Change Build process heap size (Mbytes) to 1024 and Additional build process to VM Options to -Xmx512m.

Step 5 : Close or Restart Android Studio.

Use this:

Button loginBtn = view.findViewById(R.id.loginBtn);
loginBtn.setOnClickListener(new View.OnClickListener() {
   public void onClick(View v) {
      InputMethodManager imm = (InputMethodManager) getActivity().getSystemService(getActivity().INPUT_METHOD_SERVICE);
      imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
   }
});

On MacOS I also had problems trying to install fbprophet which had gcc as one of its dependencies.

After trying several steps as recommended by @Boris the command below from the Facebook Prophet project page worked for me in the end.

conda install -c conda-forge fbprophet

It installed all the needed dependencies for fbprophet. Make sure you have anaconda installed.

You can achieve what you want with classes:

public class Base
{
    public const int A = 1;
    public const int B = 2;
    public const int C = 3;
}
public class Consume : Base
{
    public const int D = 4;
    public const int E = 5;
}

Now you can use these classes similar as when they were enums:

int i = Consume.B;

Update (after your update of the question):

If you assign the same int values to the constants as defined in the existing enum, then you can cast between the enum and the constants, e.g:

public enum SomeEnum // this is the existing enum (from WSDL)
{
    A = 1,
    B = 2,
    ...
}
public class Base
{
    public const int A = (int)SomeEnum.A;
    //...
}
public class Consume : Base
{
    public const int D = 4;
    public const int E = 5;
}

// where you have to use the enum, use a cast:
SomeEnum e = (SomeEnum)Consume.B;

1. git checkout [branchYouWantToReceiveBranch] - checkout branch you want to receive branch
2. git merge [branchYouWantToMergeIntoBranch]

In .Net Core (as of v2.2) it should be:

new Process
{
    StartInfo = new ProcessStartInfo(@"file path")
    {
        UseShellExecute = true
    }
}.Start();

Related github issue can be found here

You can also type

cat /build.info

This will give you an output like this

BUILD_BRANCH=master
BUILD_COMMIT=434160726dacc4a1a592fe6036891d6e646a3a4a
BUILD_TIME=2017-05-12T16:02:04Z
DOCKER_REPO=index.docker.io/landoop/fast-data-dev
KAFKA_VERSION=0.10.2.1
CP_VERSION=3.2.1

Simple explanation:

foo = "BEST DAY EVER" #assign a string to variable foo.

=> foo.downcase #call method downcase, this is without any exclamation.

"best day ever"  #returns the result in downcase, but no change in value of foo.

=> foo #call the variable foo now.

"BEST DAY EVER" #variable is unchanged.

=> foo.downcase! #call destructive version.

=> foo #call the variable foo now.

"best day ever" #variable has been mutated in place.

But if you ever called a method downcase! in the explanation above, foo would change to downcase permanently. downcase! would not return a new string object but replace the string in place, totally changing the foo to downcase. I suggest you don't use downcase! unless it is totally necessary.

Deleting the unnecessary site entries from applicationhost.config file solved the issue for me.

well, according to http://docs.python.org/tutorial/controlflow.html

It is not safe to modify the sequence being iterated over in the loop (this can only happen for mutable sequence types, such as lists). If you need to modify the list you are iterating over (for example, to duplicate selected items) you must iterate over a copy.

For Windows 10 using either VSCode or PyCharm with Python 3.7.4 - make sure Tk is ticked in the install. I tried import tkinter as xyz with upper/lower t and k's and all variants without luck.

What works is:

import tkinter
import _tkinter
tkinter._test()

An example in action:

import tkinter
import _tkinter

HEIGHT = 700
WIDTH = 800

root = tkinter.Tk()

canvas = tkinter.Canvas(root, height = HEIGHT, width=WIDTH)
canvas.pack()

frame = tkinter.Frame(root, bg='red')
frame.pack()

root.mainloop()

With an OR (||) operation, if any one of the conditions are true, the result is true.

I think you want an AND (&&) operation here.

I found helpful information in the

Celery Project Workers Guide inspecting-workers

For my case, I am checking to see if Celery is running.

inspect_workers = task.app.control.inspect()
if inspect_workers.registered() is None:
    state = 'FAILURE'
else:
    state = str(task.state) 

You can play with inspect to get your needs.

As a basic example...

HTML:

<input type="text" name="Thing" value="" />

Script:

/* event listener */
document.getElementsByName("Thing")[0].addEventListener('change', doThing);

/* function */
function doThing(){
   alert('Horray! Someone wrote "' + this.value + '"!');
}

Here's a fiddle: http://jsfiddle.net/Niffler/514gg4tk/

Simply call test2 from test1 like:

EXEC test2 @newId, @prod, @desc;

Make sure to get @id using SCOPE_IDENTITY(), which gets the last identity value inserted into an identity column in the same scope:

SELECT @newId = SCOPE_IDENTITY()

On a side note, good to know
This answer works (https://stackoverflow.com/a/13468685/7034327)

Intent intent = new Intent(getApplicationContext(), LoginActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK|Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
this.finish();

whereas this doesn't work

Intent intent = new Intent(getApplicationContext(), LoginActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);

.setFlags() replaces any previous flags and doesn't append any new flags while .addFlags() does.

So this will also work

Intent intent = new Intent(getApplicationContext(), LoginActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);

In the question, you link to the maths for when rectangles are at arbitrary angles of rotation. If I understand the bit about angles in the question however, I interpret that all rectangles are perpendicular to one another.

A general knowing the area of overlap formula is:

Using the example:

   1   2   3   4   5   6

1  +---+---+
   |       |   
2  +   A   +---+---+
   |       | B     |
3  +       +   +---+---+
   |       |   |   |   |
4  +---+---+---+---+   +
               |       |
5              +   C   +
               |       |
6              +---+---+

1) collect all the x coordinates (both left and right) into a list, then sort it and remove duplicates

1 3 4 5 6

2) collect all the y coordinates (both top and bottom) into a list, then sort it and remove duplicates

1 2 3 4 6

3) create a 2D array by number of gaps between the unique x coordinates * number of gaps between the unique y coordinates.

4 * 4

4) paint all the rectangles into this grid, incrementing the count of each cell it occurs over:

   1   3   4   5   6

1  +---+
   | 1 | 0   0   0
2  +---+---+---+
   | 1 | 1 | 1 | 0
3  +---+---+---+---+
   | 1 | 1 | 2 | 1 |
4  +---+---+---+---+
     0   0 | 1 | 1 |
6          +---+---+

5) As you paint the rectangles, its easy to intercept the overlaps.

I was having the same issue and tried all of the solutions on this page but none of them did the trick.

What finally worked was adding the universe repo to my repo list. To do that run the following command

sudo add-apt-repository universe

After running the above command I was able to run

sudo apt install openjdk-8-jre

without an issue and the package was installed.

Hope this helps someone.

For a couple of years I was a supporter of using a specific .gitignore for IntelliJ with this suggested configuration.

Not anymore.

IntelliJ is updated quite frequently, internal config file specs change more often than I would like and JetBrains flagship excels at auto-configuring itself based on maven/gradle/etc build files.

So my suggestion would be to leave all editor config files out of project and have users configure editor to their liking. Things like code styling can and should be configured at build level; say using Google Code Style or CheckStyle directly on Maven/Gradle/sbt/etc.

This ensures consistency and leaves editor files out of source code that, in my personal opinion, is where they should be.

This is definitely a bug.Laravel offers predefined code in routes/api.php

Route::middleware('auth:api')->get('/user', function (Request $request) { 
     return $request->user(); 
});

which is unabled to be processed by:

php artisan route:cache

This definitely should be fixed by Laravel team.(check the link),

simply if you want to fix it you should replace routes\api.php code with some thing like :

Route::middleware('auth:api')->get('/user', 'UserController@AuthRouteAPI');

and in UserController put this method:

 public function AuthRouteAPI(Request $request){
    return $request->user();
 }

To avoid this warning, do not use:

async: false

in any of your $.ajax() calls. This is the only feature of XMLHttpRequest that's deprecated.

The default is async: true, so if you never use this option at all, your code should be safe if the feature is ever really removed.

However, it probably won't be -- it may be removed from the standards, but I'll bet browsers will continue to support it for many years. So if you really need synchronous AJAX for some reason, you can use async: false and just ignore the warnings. But there are good reasons why synchronous AJAX is considered poor style, so you should probably try to find a way to avoid it. And the people who wrote Flash applications probably never thought it would go away, either, but it's in the process of being phased out now.

Notice that the Fetch API that's replacing XMLHttpRequest does not even offer a synchronous option.

"NUL" is not 0, but refers to the ASCII NUL character. At least, that's how I've seen it used. The null pointer is often defined as 0, but this depends on the environment you are running in, and the specification of whatever operating system or language you are using.

In ANSI C, the null pointer is specified as the integer value 0. So any world where that's not true is not ANSI C compliant.

It's very simple.

If you want to have something like a glyphicon icon and then "Wish List",

<span class="glyphicon-heart"></span> @Html.ActionLink("Wish List (0)", "Index", "Home")

That is because you are not fully qualifying your cells object. Try this

With Worksheets("SheetName")
    .Range(.Cells(1, 1), .Cells(10, 2)).ClearContents
End With

Notice the DOT before Cells?

From the TypeScript site: https://github.com/Microsoft/TypeScript/issues/6471

The recommended practice is to write the props type as {children?: any}

That worked for me. The child node can be many different things, so explicit typing can miss cases.

There's a longer discussion on the followup issue here: https://github.com/Microsoft/TypeScript/issues/13618, but the any approach still works.

I've found this issue to be prevalent in Entity Framework when we instantiate an Entity manually rather than through DBContext which will resolve all the Navigation Properties. If there are Foreign Key references (Navigation Properties) between tables and you use those references in your lambda (e.g. ProductDetail.Products.ID) then that "Products" context remains null if you manually created the Entity.

I've become fond of using indexOf for this. Because indexOf is on Array.prototype and parent.children is a NodeList, you have to use call(); It's kind of ugly but it's a one liner and uses functions that any javascript dev should be familiar with anyhow.

var child = document.getElementById('my_element');
var parent = child.parentNode;
// The equivalent of parent.children.indexOf(child)
var index = Array.prototype.indexOf.call(parent.children, child);

According to the doc, scipy.misc.imread is deprecated starting SciPy 1.0.0, and will be removed in 1.2.0. Consider using imageio.imread instead.

Example:

import imageio

im = imageio.imread('my_image.png')
print(im.shape)

You can also use imageio to load from fancy sources:

im = imageio.imread('http://upload.wikimedia.org/wikipedia/commons/d/de/Wikipedia_Logo_1.0.png')

Edit:

To load all of the *.png files in a specific folder, you could use the glob package:

import imageio
import glob

for im_path in glob.glob("path/to/folder/*.png"):
     im = imageio.imread(im_path)
     print(im.shape)
     # do whatever with the image here

Escape your HTML tags ...

<resources>
    <string name="somestring">
        &lt;B&gt;Title&lt;/B&gt;&lt;BR/&gt;
        Content
    </string>
</resources>

The problem is that '_' underscores are not valid in header attribute. If removing the underscore is not an option you can add to the server block:

underscores_in_headers on;

This is basically a copy and paste from @kishorer747 comment on @Fleshgrinder answer, and solution is from: https://serverfault.com/questions/586970/nginx-is-not-forwarding-a-header-value-when-using-proxy-pass/586997#586997

I added it here as in my case the application behind nginx was working perfectly fine, but as soon ngix was between my flask app and the client, my flask app would not see the headers any longer. It was kind of time consuming to debug.

Adding on to what @tjg184 said, you could do something like...

if (String.IsNullOrEmpty(MaterialTextBox.Text.Trim())) 

...

This is an old question, but I stumbled across it and thought I'd share the method I used:

var body = '<div id="anid">some <a href="link">text</a></div> and some more text';
var temp = document.createElement("div");
temp.innerHTML = body;
var sanitized = temp.textContent || temp.innerText;

sanitized will now contain: "some text and some more text"

Simple, no jQuery needed, and it shouldn't let you down even in more complex cases.

You are halfway there. Try:

In [4]: a[a < 0] = 0

In [5]: a
Out[5]: array([1, 2, 3, 0, 5])

It is two problems - is the slashes the right places and is it a valid date. I would suggest you catch input changes and put the slashes in yourself. (annoying for the user)

The interesting problem is whether they put in a valid date and I would suggest exploiting how flexible js is:

function isValidDate(str) {_x000D_
  var newdate = new Date();_x000D_
  var yyyy = 2000 + Number(str.substr(4, 2));_x000D_
  var mm = Number(str.substr(2, 2)) - 1;_x000D_
  var dd = Number(str.substr(0, 2));_x000D_
  newdate.setFullYear(yyyy);_x000D_
  newdate.setMonth(mm);_x000D_
  newdate.setDate(dd);_x000D_
  return dd == newdate.getDate() && mm == newdate.getMonth() && yyyy == newdate.getFullYear();_x000D_
}_x000D_
console.log(isValidDate('jk'));//false_x000D_
console.log(isValidDate('290215'));//false_x000D_
console.log(isValidDate('290216'));//true_x000D_
console.log(isValidDate('292216'));//false

If the path is a drive, a slash will also appear in the path, and this time the use will cause problems. To unify, the best solution is the following command.

        Dim FileName As String = "MyFileName"
    Dim MyPath1 As String = Application.StartupPath().TrimEnd("\") & "\" & FileName
    Dim MyPath2 As String = My.Application.Info.DirectoryPath.TrimEnd("\") & "\" & FileName

There is no reason to do that. In fact, I would choose to combine declaration and initialization as in

final Boolean isMatch = email1.equals (email2);

using the final keyword so you can't change it (accidentally) afterwards anymore either.

We are able to swap var like this :

var val1 =  117,
    val2 = 327;

val2 = val1-val2; 
console.log(val2);
val1 = val1-val2;
console.log(val1);
val2 = val1+val2;
console.log(val2);

For GOOGLE, GOOGLEDOWN, GOOGLEUP i.e similar kind of value you can try below code

   $("#HowYouKnow option:contains('GOOGLE')").each(function () {

                        if($(this).html()=='GOOGLE'){
                            $(this).attr('selected', 'selected');
                        }
                    });

In this way,number of loop iteration can be reduced and will work in all situation.

add is a local variable not a global variable try this

var add;_x000D_
var input = document.getElementById("input");_x000D_
_x000D_
function start() {_x000D_
  add = setInterval("input.value++", 1000);_x000D_
}_x000D_
start();

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>_x000D_
<input type="number" id="input" />_x000D_
<input type="button" onclick="clearInterval(add)" value="stop" />_x000D_
<input type="button" onclick="start()" value="start" />

Why not use an cache that stores each marker object and references an ID?

var markerCache= {};
var idGen= 0;

function codeAddress(addr, contentStr){
    // create marker
    // store
    markerCache[idGen++]= marker;
}

Edit: of course this relies on a numeric index system that doesn't offer a length property like an array. You could of course prototype the Object object and create a length, etc for just such a thing. OTOH, generating a unique ID value (MD5, etc) of each address might be the way to go.

c=0
words = ['challa','reddy','challa']

for idx, word in enumerate(words):
    if idx==0:
        firstword=word
        print(firstword)
    elif idx == len(words)-1:
        lastword=word
        print(lastword)
        if firstword==lastword:
            c=c+1
            print(c)

You can stash (save the changes in temporary box) then, back to master branch HEAD.

$ git add .
$ git stash
$ git checkout master

Jump Over Commits Back and Forth:

• Go to a specific commit-sha.

    $ git checkout <commit-sha>
  

• If you have uncommitted changes here then, you can checkout to a new branch | Add | Commit | Push the current branch to the remote.

    # checkout a new branch, add, commit, push
    $ git checkout -b <branch-name>
    $ git add .
    $ git commit -m 'Commit message'
    $ git push origin HEAD          # push the current branch to remote 
  
    $ git checkout master           # back to master branch now
  

• If you have changes in the specific commit and don't want to keep the changes, you can do stash or reset then checkout to master (or, any other branch).

    # stash
    $ git add -A
    $ git stash
    $ git checkout master
  
    # reset
    $ git reset --hard HEAD
    $ git checkout master
  

• After checking out a specific commit if you have no uncommitted change(s) then, just back to master or other branch.

    $ git status          # see the changes
    $ git checkout master
  
    # or, shortcut
    $ git checkout -      # back to the previous state
  

The following ways work.

// The old way of using ParameterizedThreadStart. This requires a
// method which takes ONE object as the parameter so you need to
// encapsulate the parameters inside one object.
Thread t = new Thread(new ParameterizedThreadStart(StartupA));
t.Start(new MyThreadParams(path, port));

// You can also use an anonymous delegate to do this.
Thread t2 = new Thread(delegate()
{
    StartupB(port, path);
});
t2.Start();

// Or lambda expressions if you are using C# 3.0
Thread t3 = new Thread(() => StartupB(port, path));
t3.Start();

The Startup methods have following signature for these examples.

public void StartupA(object parameters);

public void StartupB(int port, string path);

Use modulo

whenever a number x is a multiple of some number y, then always x % y equal to 0, which can be used as a check. So use

if (j % 4 == 0) 

SELECT  *FROM 
    (
    SELECT *FROM emp 
    ORDER BY Salary desc
    )
WHERE rownum <= 3
ORDER BY Salary ;

If the keystore contains other key-entries with different password you have to change them also or you can isolate your key to different keystore using below command,

keytool -importkeystore  -srckeystore mystore.jck -destkeystore myotherstore.jks -srcstoretype jceks
-deststoretype jks -srcstorepass mystorepass -deststorepass myotherstorepass -srcalias myserverkey
-destalias myotherserverkey -srckeypass mykeypass -destkeypass myotherkeypass

It's impossible to say without seeing your actual code. Likely the reason is a code path through your function that doesn't execute a return statement. When the code goes down that path, the function ends with no value returned, and so returns None.

Updated: It sounds like your code looks like this:

def b(self, p, data): 
    current = p 
    if current.data == data: 
        return True 
    elif current.data == 1:
        return False 
    else: 
        self.b(current.next, data)

That else clause is your None path. You need to return the value that the recursive call returns:

    else:
        return self.b(current.next, data)

BTW: using recursion for iterative programs like this is not a good idea in Python. Use iteration instead. Also, you have no clear termination condition.

Your original code uses FileInputStream, which is for accessing file system hosted files.

The constructor you used will attempt to locate a file named a.txt in the www.somewebsite.com subfolder of the current working directory (the value of system property user.dir). The name you provide is resolved to a file using the File class.

URL objects are the generic way to solve this. You can use URLs to access local files but also network hosted resources. The URL class supports the file:// protocol besides http:// or https:// so you're good to go.

You can use vimdiff.

Example:

vimdiff file1 file2

The FragmentManger's function add and replace can be described as these 1. add means it will add the fragment in the fragment back stack and it will show at given frame you are providing like

getFragmentManager.beginTransaction.add(R.id.contentframe,Fragment1.newInstance(),null)

2.replace means that you are replacing the fragment with another fragment at the given frame

getFragmentManager.beginTransaction.replace(R.id.contentframe,Fragment1.newInstance(),null)

The Main utility between the two is that when you are back stacking the replace will refresh the fragment but add will not refresh previous fragment.

Maybe your VMnet8 ip is not in the same network segment, e.g., my vm ip is 192.168.71.105, I can ping my windows in vm, but can't ping vm in windows, so this time you may check if vmnet8 is configured right. IP: 192.168.71.1

Always specify the minimum required version of cmake

cmake_minimum_required(VERSION 3.9)

You should declare a project. cmake says it is mandatory and it will define convenient variables PROJECT_NAME, PROJECT_VERSION and PROJECT_DESCRIPTION (this latter variable necessitate cmake 3.9):

project(mylib VERSION 1.0.1 DESCRIPTION "mylib description")

Declare a new library target. Please avoid the use of file(GLOB ...). This feature does not provide attended mastery of the compilation process. If you are lazy, copy-paste output of ls -1 sources/*.cpp :

add_library(mylib SHARED
    sources/animation.cpp
    sources/buffers.cpp
    [...]
)

Set VERSION property (optional but it is a good practice):

set_target_properties(mylib PROPERTIES VERSION ${PROJECT_VERSION})

You can also set SOVERSION to a major number of VERSION. So libmylib.so.1 will be a symlink to libmylib.so.1.0.0.

set_target_properties(mylib PROPERTIES SOVERSION 1)

Declare public API of your library. This API will be installed for the third-party application. It is a good practice to isolate it in your project tree (like placing it include/ directory). Notice that, private headers should not be installed and I strongly suggest to place them with the source files.

set_target_properties(mylib PROPERTIES PUBLIC_HEADER include/mylib.h)

If you work with subdirectories, it is not very convenient to include relative paths like "../include/mylib.h". So, pass a top directory in included directories:

target_include_directories(mylib PRIVATE .)

or

target_include_directories(mylib PRIVATE include)
target_include_directories(mylib PRIVATE src)

Create an install rule for your library. I suggest to use variables CMAKE_INSTALL_*DIR defined in GNUInstallDirs:

include(GNUInstallDirs)

And declare files to install:

install(TARGETS mylib
    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
    PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})

You may also export a pkg-config file. This file allows a third-party application to easily import your library:

• with Makefile, see pkg-config
• with Autotools, see PKG_CHECK_MODULES
• with cmake, see pkg_check_modules

Create a template file named mylib.pc.in (see pc(5) manpage for more information):

prefix=@CMAKE_INSTALL_PREFIX@
exec_prefix=@CMAKE_INSTALL_PREFIX@
libdir=${exec_prefix}/@CMAKE_INSTALL_LIBDIR@
includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@

Name: @PROJECT_NAME@
Description: @PROJECT_DESCRIPTION@
Version: @PROJECT_VERSION@

Requires:
Libs: -L${libdir} -lmylib
Cflags: -I${includedir}

In your CMakeLists.txt, add a rule to expand @ macros (@ONLY ask to cmake to not expand variables of the form ${VAR}):

configure_file(mylib.pc.in mylib.pc @ONLY)

And finally, install generated file:

install(FILES ${CMAKE_BINARY_DIR}/mylib.pc DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/pkgconfig)

You may also use cmake EXPORT feature. However, this feature is only compatible with cmake and I find it difficult to use.

Finally the entire CMakeLists.txt should looks like:

cmake_minimum_required(VERSION 3.9)
project(mylib VERSION 1.0.1 DESCRIPTION "mylib description")
include(GNUInstallDirs)
add_library(mylib SHARED src/mylib.c)
set_target_properties(mylib PROPERTIES
    VERSION ${PROJECT_VERSION}
    SOVERSION 1
    PUBLIC_HEADER api/mylib.h)
configure_file(mylib.pc.in mylib.pc @ONLY)
target_include_directories(mylib PRIVATE .)
install(TARGETS mylib
    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
    PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
install(FILES ${CMAKE_BINARY_DIR}/mylib.pc
    DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/pkgconfig)

git log --full-history -- [file path] shows the changes of a file and works even if the file was deleted.

Example:

git log --full-history  -- myfile

If you want to see only the last commit, which deleted the file, use -1 in addition to the command above. Example:

git log --full-history -1 -- [file path]

See also my article: Which commit deleted a file.

Try this :)

    <script type="text/javascript" src="http://www.google.com/jsapi"></script>
    <script type="text/javascript">
    function initialize() {
        var loc = {};
        var geocoder = new google.maps.Geocoder();
        if(google.loader.ClientLocation) {
            loc.lat = google.loader.ClientLocation.latitude;
            loc.lng = google.loader.ClientLocation.longitude;

            var latlng = new google.maps.LatLng(loc.lat, loc.lng);
            geocoder.geocode({'latLng': latlng}, function(results, status) {
                if(status == google.maps.GeocoderStatus.OK) {
                    alert(results[0]['formatted_address']);
                };
            });
        }
    }

    google.load("maps", "3.x", {other_params: "sensor=false", callback:initialize});

    </script>

The ifelse function would be a quick and easy way to do this.

In the detached window (Tool Options), the name of the view (Paintbrush) is a grab-bar.

Put your cursor over the grab-bar, click and drag it to the dock area in the main window in order to reattach it to the main window.

A variation of @batchman61's approach (checking the Directory attribute).

This time I use an external 'find' command.

(Oh, and note the && trick. This is to avoid the long boring IF ERRORLEVEL syntax.)

@ECHO OFF
SETLOCAL EnableExtensions
ECHO.%~a1 | find "d" >NUL 2>NUL && (
    ECHO %1 is a directory
)

Outputs yes on:

• Directories.
• Directory symbolic links or junctions.
• Broken directory symbolic links or junctions. (Doesn't try to resolve links.)
• Directories which you have no read permission on (e.g. "C:\System Volume Information")

For safety, I always parenthesise my comparisons and space them out. That way, I don't have to rely on operator precedence:

if( 
    ((i==0) && (b==2)) 
    || 
    ((c==3) && !(f==5)) 
  )

Like answered before, you should use:

Object value = field.get(objectInstance);

Another way, which is sometimes prefered, is calling the getter dynamically. example code:

public static Object runGetter(Field field, BaseValidationObject o)
{
    // MZ: Find the correct method
    for (Method method : o.getMethods())
    {
        if ((method.getName().startsWith("get")) && (method.getName().length() == (field.getName().length() + 3)))
        {
            if (method.getName().toLowerCase().endsWith(field.getName().toLowerCase()))
            {
                // MZ: Method found, run it
                try
                {
                    return method.invoke(o);
                }
                catch (IllegalAccessException e)
                {
                    Logger.fatal("Could not determine method: " + method.getName());
                }
                catch (InvocationTargetException e)
                {
                    Logger.fatal("Could not determine method: " + method.getName());
                }

            }
        }
    }


    return null;
}

Also be aware that when your class inherits from another class, you need to recursively determine the Field. for instance, to fetch all Fields of a given class;

    for (Class<?> c = someClass; c != null; c = c.getSuperclass())
    {
        Field[] fields = c.getDeclaredFields();
        for (Field classField : fields)
        {
            result.add(classField);
        }
    }

Unfortunately you can't animate the display property. For a full list of what you can animate, try this CSS animation list by w3 Schools.

If you want to retain it's visual position on the page, you should try animating either it's height (which will still affect the position of other elements), or opacity (how transparent it is). You could even try animating the z-index, which is the position on the z axis (depth), by putting an element over the top of it, and then rearranging what's on top. However, I'd suggest using opacity, as it retains the vertical space where the element is.

I've updated the fiddle to show an example.

Good luck!

This will get you the hours, minutes and second. hey presto.

select
  to_char(CREATION_TIME,'RRRR') year, 
  to_char(CREATION_TIME,'MM') MONTH, 
  to_char(CREATION_TIME,'DD') DAY, 
  to_char(CREATION_TIME,'HH:MM:SS') TIME,
  sum(bytes) Bytes 
from 
  v$datafile 
group by 
  to_char(CREATION_TIME,'RRRR'), 
  to_char(CREATION_TIME,'MM'), 
  to_char(CREATION_TIME,'DD'), 
  to_char(CREATION_TIME,'HH:MM:SS') 
 ORDER BY 1, 2; 

curl's --data will by default send Content-Type: application/x-www-form-urlencoded in the request header. However, when using Postman's raw body mode, Postman sends Content-Type: text/plain in the request header.

So to achieve the same thing as Postman, specify -H "Content-Type: text/plain" for curl:

curl -X POST -H "Content-Type: text/plain" --data "this is raw data" http://78.41.xx.xx:7778/

Note that if you want to watch the full request sent by Postman, you can enable debugging for packed app. Check this link for all instructions. Then you can inspect the app (right-click in Postman) and view all requests sent from Postman in the network tab :

You can use the open event handler to apply additional styling:

 open: function(event) {
     $('.ui-dialog-buttonpane').find('button:contains("Cancel")').addClass('cancelButton');
 }

You can simply use this:

if ($("#one")){
   alert('yes');
}

if ($("#two")){
   alert('yes');
}

if ($("#three")){
   alert('yes');
}

if ($("#four")){
   alert('no');
}

Sorry, my mistake, it does not work.

If the property name is different from what you want to call it (i.e. language differences) you can do like this:

MyType.cs

using System;
using System.Runtime.Serialization;
using Newtonsoft.Json;
using Newtonsoft.Json.Converters;

[JsonConverter(typeof(StringEnumConverter))]
public enum MyType
{
    [EnumMember(Value = "person")]
    Person,
    [EnumMember(Value = "annan_deltagare")]
    OtherPerson,
    [EnumMember(Value = "regel")]
    Rule,
}

EnumExtensions.cs

using System;
using Newtonsoft.Json;
using Newtonsoft.Json.Converters;

public static class EnumExtensions
{
    public static TEnum ToEnum<TEnum>(this string value) where TEnum : Enum
    {
        var jsonString = $"'{value.ToLower()}'";
        return JsonConvert.DeserializeObject<TEnum>(jsonString, new StringEnumConverter());
    }

    public static bool EqualsTo<TEnum>(this string strA, TEnum enumB) where TEnum : Enum
    {
        TEnum enumA;
        try
        {
            enumA = strA.ToEnum<TEnum>();
        }
        catch
        {
            return false;
        }
        return enumA.Equals(enumB);
    }
}

Program.cs

public class Program
{
    static public void Main(String[] args) 
    { 
        var myString = "annan_deltagare";
        var myType = myString.ToEnum<MyType>();
        var isEqual = myString.EqualsTo(MyType.OtherPerson);
        //Output: true
    }     
}

Add a class:

.com_box:after {
     content: '';
    position: absolute;
    left: 18px;
    top: 50px;
    width: 0;
    height: 0;
    border-left: 20px solid transparent;
    border-right: 20px solid transparent;
    border-top: 20px solid #000;
    clear: both;

}

Updated your jsfiddle: http://jsfiddle.net/wrm4y8k6/8/

package com.adil.util;

/**
* The Class RandomColor.
*
* @author Adil OUIDAD
* @URL : http://kizana.fr
*/
public class RandomColor {      
    /**
    * Gets the random color.
    *
    * @return the random color
    */
    public static String getRandomColor() {
         String[] letters = {"0","1","2","3","4","5","6","7","8","9","A","B","C","D","E","F"};
         String color = "#";
         for (int i = 0; i < 6; i++ ) {
            color += letters[(int) Math.round(Math.random() * 15)];
         }
         return color;
    }
}

Here's a method which is similar to Kelly's but will remove any pre-existing script with the same source, and uses jQuery.

<script>
    function reload_js(src) {
        $('script[src="' + src + '"]').remove();
        $('<script>').attr('src', src).appendTo('head');
    }
    reload_js('source_file.js');
</script>

Note that the 'type' attribute is no longer needed for scripts as of HTML5. (http://www.w3.org/html/wg/drafts/html/master/scripting-1.html#the-script-element)

Angular 1.1.5 added support for ternary operators:

{{myVar === "two" ? "it's true" : "it's false"}}

For me, this is the easier way (less typing):

$ git remote -v
origin    https://github.com/torvalds/linux.git (fetch)
origin    https://github.com/torvalds/linux.git (push)

actually, I've that into an alias called s that does:

git remote -v
git status

You can add to your profile with: alias s='git remote -v && git status'

I don't know what things were like in the alpha, but I'm using beta 12 right now and this works fine. If you have an array of objects, create a select like this:

<select [(ngModel)]="simpleValue"> // value is a string or number
    <option *ngFor="let obj of objArray" [value]="obj.value">{{obj.name}}</option>
</select>

If you want to match on the actual object, I'd do it like this:

<select [(ngModel)]="objValue"> // value is an object
    <option *ngFor="let obj of objArray" [ngValue]="obj">{{obj.name}}</option>
</select>

DateTime now = DateTime.Now;

now.ToLongDateString();    // Wednesday, January 2, 2019
now.ToLongTimeString();    // 2:33:59 PM
now.ToShortDateString();   // 1/2/2019
now.ToShortTimeString();   // 2:16 PM
now.ToString();            // 1/2/2019 2:33:59 PM

SQL Server uses the Bit datatype

Hash tables deal with collisions in one of two ways.

Option 1: By having each bucket contain a linked list of elements that are hashed to that bucket. This is why a bad hash function can make lookups in hash tables very slow.

Option 2: If the hash table entries are all full then the hash table can increase the number of buckets that it has and then redistribute all the elements in the table. The hash function returns an integer and the hash table has to take the result of the hash function and mod it against the size of the table that way it can be sure it will get to bucket. So by increasing the size, it will rehash and run the modulo calculations which if you are lucky might send the objects to different buckets.

Java uses both option 1 and 2 in its hash table implementations.

I use an easier regex pattern

^[0-9A-Fa-f\-]{36}$

IT baffles me sometimes to why a software company would develop its own scripting language to interface with their software, rather than building a strong API that can interface with your scripting language of choice. My vote goes to TransCAD's scripting language.

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

ThisWorkbook.Path

is what you would use.

    public void ChargingArraySelect()
    {
        int loop = 0;
        int registros = 0;

        OdbcConnection conn = WebApiConfig.conn();
        OdbcCommand query = conn.CreateCommand();

        query.CommandText = "select dataA, DataB, dataC, DataD FROM table  where dataA = 'xpto'";

        try
        {
            conn.Open();
            OdbcDataReader dr = query.ExecuteReader();

            //take the number the registers, to use into next step
            registros = dr.RecordsAffected;

            //calls an array to be populated
            Global.arrayTest = new string[registros, 4];

            while (dr.Read())
            {
                if (loop < registros)
                {
                    Global.arrayTest[i, 0] = Convert.ToString(dr["dataA"]);
                    Global.arrayTest[i, 1] = Convert.ToString(dr["dataB"]);
                    Global.arrayTest[i, 2] = Convert.ToString(dr["dataC"]);
                    Global.arrayTest[i, 3] = Convert.ToString(dr["dataD"]);
                }
                loop++;
            }
        }
    }


    //Declaration the Globais Array in Global Classs
    private static string[] uso_internoArray1;
    public static string[] arrayTest
    {
        get { return uso_internoArray1; }
        set { uso_internoArray1 = value; }
    }

If you only want to get query parameter once, the best way is to use take method so you do not need to worry about unsubscription. Here is the simple snippet:-

constructor(private route: ActivatedRoute) {
  route.snapshot.queryParamMap.take(1).subscribe(params => {
     let category = params.get('category')
     console.log(category);
  })
}

Note: Remove take(1) if you want to use parameter values in future.

Simply do the following in didFinishWithLaunching::

if #available(iOS 10.0, *) {

    let center = UNUserNotificationCenter.current()

    center.delegate = self
    center.requestAuthorization(options: []) { _, _ in
        application.registerForRemoteNotifications()
    }
}

Remember about import statement:

import UserNotifications

1. While Angular 1 was a framework, Angular 2 is a platform. (ref)

To developers, Angular2 provides some features beyond showing data on screen. For example, using angular2 cli tool can help you "pre-compile" your code and generate necessary javascript code (tree-shaking) to shrink the download size down to 35Kish.

2. Angular2 emulated Shadow DOM. (ref)

This opens a door for server rendering that can address SEO issue and work with Nativescript etc that don't work on browsers.

• The official document site

• Day one keynote from ng-conf 2016

• Resource links Original: Basically, jQuery is a great tool for you to manipulate and control DOM elements. If you only focus on DOM elements and no Data CRUD, like building a website not web application, jQuery is the one of the top tools. (You can use AngularJS for this purpose as well.)

AngularJS is a framework. It has following features

1. Two way data binding
2. MVW pattern (MVC-ish)
3. Template
4. Custom-directive (reusable components, custom markup)
5. REST-friendly
6. Deep Linking (set up a link for any dynamic page)
7. Form Validation
8. Server Communication
9. Localization
10. Dependency injection
11. Full testing environment (both unit, e2e)

check this presentation and this great introduction

Don't forget to read the official developer guide

Or learn it from these awesome video tutorials

If you want to watch more tutorial video, check out this post, Collection of best 60+ AngularJS tutorials.

You can use jQuery with AngularJS without any issue.

In fact, AngularJS uses jQuery lite in it, which is a great tool.

From FAQ

Does Angular use the jQuery library?

Yes, Angular can use jQuery if it's present in your app when the application is being bootstrapped. If jQuery is not present in your script path, Angular falls back to its own implementation of the subset of jQuery that we call jQLite.

However, don't try to use jQuery to modify the DOM in AngularJS controllers, do it in your directives.

Update:

Angular2 is released. Here is a great list of resource for starters

You might try using display: block or display: inline-block. A nice tutorial can be found here: http://robertnyman.com/2010/02/24/css-display-inline-block-why-it-rocks-and-why-it-sucks/

<a onclick="MyFunc()">blabla..</a>

There is nothing more in @Html.ActionLink that you could utilize in this case. And razor is evel by itself, drop it from where you can.

Hopefully this is helpful to anyone coming looking for a universal/isomorphic solution, since the checksum issue is what led me here in the first place.

As said above, I've created a simple utility to sequentially create a new id. Since the IDs keep incrementing on the server, and start over from 0 in the client, I decided to reset the increment each the SSR starts.

// utility to generate ids
let current = 0

export default function generateId (prefix) {
  return `${prefix || 'id'}-${current++}`
}

export function resetIdCounter () { current = 0 }

And then in the root component's constructor or componentWillMount, call the reset. This essentially resets the JS scope for the server in each server render. In the client it doesn't (and shouldn't) have any effect.

To get a inplace like result with grep you can do this:

echo "$(grep -v "pattern" filename)" >filename

If someone wants an extra simple solution before trying anything else.

Simply restart your PC. Open Visual Studio, try to build again.

Update:

Separate the event and property bindings:

<select [ngModel]="selectedItem" (ngModelChange)="onChange($event)">

onChange(newValue) {
    console.log(newValue);
    this.selectedItem = newValue;  // don't forget to update the model here
    // ... do other stuff here ...
}

You could also use

<select [(ngModel)]="selectedItem" (ngModelChange)="onChange($event)">

and then you wouldn't have to update the model in the event handler, but I believe this causes two events to fire, so it is probably less efficient.

Old answer, before they fixed a bug in beta.1:

Create a local template variable and attach a (change) event:

<select [(ngModel)]="selectedItem" #item (change)="onChange(item.value)">

plunker

See also How can I get new selection in "select" in Angular 2?

Using array_seach(), try the following:

if(($key = array_search($del_val, $messages)) !== false) {
    unset($messages[$key]);
}

array_search() returns the key of the element it finds, which can be used to remove that element from the original array using unset(). It will return FALSE on failure, however it can return a "falsey" value on success (your key may be 0 for example), which is why the strict comparison !== operator is used.

The if() statement will check whether array_search() returned a value, and will only perform an action if it did.

Use @Html.Raw() with caution as you may cause more trouble with encoding and security. I understand the use case as I had to do this myself, but carefully... Just avoid allowing all text through. For example only preserve/convert specific character sequences and always encode the rest:

@Html.Raw(Html.Encode(myString).Replace("\n", "<br/>"))

Then you have peace of mind that you haven't created a potential security hole and any special/foreign characters are displayed correctly in all browsers.

Your question is very poorly worded. Your code (sort of) already does what you want. What exactly are you confused about? x.numpy() answer the original title of your question:

Pytorch tensor to numpy array

you need improve your question starting with your title.

Anyway, just in case this is useful to others. You might need to call detach for your code to work. e.g.

RuntimeError: Can't call numpy() on Variable that requires grad.

So call .detach(). Sample code:

# creating data and running through a nn and saving it

import torch
import torch.nn as nn

from pathlib import Path
from collections import OrderedDict

import numpy as np

path = Path('~/data/tmp/').expanduser()
path.mkdir(parents=True, exist_ok=True)

num_samples = 3
Din, Dout = 1, 1
lb, ub = -1, 1

x = torch.torch.distributions.Uniform(low=lb, high=ub).sample((num_samples, Din))

f = nn.Sequential(OrderedDict([
    ('f1', nn.Linear(Din,Dout)),
    ('out', nn.SELU())
]))
y = f(x)

# save data
y.numpy()
x_np, y_np = x.detach().cpu().numpy(), y.detach().cpu().numpy()
np.savez(path / 'db', x=x_np, y=y_np)

print(x_np)

cpu goes after detach. See: https://discuss.pytorch.org/t/should-it-really-be-necessary-to-do-var-detach-cpu-numpy/35489/5

Also I won't make any comments on the slicking since that is off topic and that should not be the focus of your question. See this:

Understanding slice notation

Actually I fixed this issue in a very simple way

1. go to your home path, like /root
2. create a folder named .fonts
3. copy your all your font files to .fonts, you can copy the font from C:\windows\fonts if you use windows.
4. sudo apt-get install fontconfig
5. fc-cache –fv to rebuid fonts caches.

I had the same issue in both VS 2010 and VS 2012. On my system the first static lib was built and then got immediately deleted when the main project started building.

The problem is the common intermediate folder for several projects. Just assign separate intermediate folder for each project.

Read more on this here

You have a numpy array of strings, not floats. This is what is meant by dtype('<U9') -- a little endian encoded unicode string with up to 9 characters.

try:

return sum(np.asarray(listOfEmb, dtype=float)) / float(len(listOfEmb))

However, you don't need numpy here at all. You can really just do:

return sum(float(embedding) for embedding in listOfEmb) / len(listOfEmb)

Or if you're really set on using numpy.

return np.asarray(listOfEmb, dtype=float).mean()

You need to use Inlines:

<TextBlock.Inlines>
    <Run FontWeight="Bold" FontSize="14" Text="This is WPF TextBlock Example. " />
    <Run FontStyle="Italic" Foreground="Red" Text="This is red text. " />
</TextBlock.Inlines>

With binding:

<TextBlock.Inlines>
    <Run FontWeight="Bold" FontSize="14" Text="{Binding BoldText}" />
    <Run FontStyle="Italic" Foreground="Red" Text="{Binding ItalicText}" />
</TextBlock.Inlines>

You can also bind the other properties:

<TextBlock.Inlines>
    <Run FontWeight="{Binding Weight}"
         FontSize="{Binding Size}"
         Text="{Binding LineOne}" />
    <Run FontStyle="{Binding Style}"
         Foreground="Binding Colour}"
         Text="{Binding LineTwo}" />
</TextBlock.Inlines>

You can bind through converters if you have bold as a boolean (say).

That's not a good practice and there is no mechanism to do that because of that. The right way to accomplish what you want is inheritance.

Take a look into the class documentation.

A little example:

class Employee(object):

    def __init__(self, age, sex, siblings=0):
        self.age = age
        self.sex = sex    
        self.siblings = siblings

    def born_on(self):    
        today = datetime.date.today()

        return today - datetime.timedelta(days=self.age*365)


class Boss(Employee):    
    def __init__(self, age, sex, siblings=0, bonus=0):
        self.bonus = bonus
        Employee.__init__(self, age, sex, siblings)

This way Boss has everything Employee has, with also his own __init__ method and own members.

Try something like this:

#include <signal.h>

pid_t child_pid = -1 ; //Global

void kill_child(int sig)
{
    kill(child_pid,SIGKILL);
}

int main(int argc, char *argv[])
{
    signal(SIGALRM,(void (*)(int))kill_child);
    child_pid = fork();
    if (child_pid > 0) {
     /*PARENT*/
        alarm(30);
        /*
         * Do parent's tasks here.
         */
        wait(NULL);
    }
    else if (child_pid == 0){
     /*CHILD*/
        /*
         * Do child's tasks here.
         */
    }
}

To show leading zeros infront of hours, minutes and seconds use below modified code. The trick here is we are converting (or more accurately formatting) integer into string so that it shows leading zero whenever applicable :

public String convertTimeWithTimeZome(long time) {
        Calendar cal = Calendar.getInstance();
        cal.setTimeZone(TimeZone.getTimeZone("UTC"));
        cal.setTimeInMillis(time);
        String curTime = String.format("%02d:%02d:%02d", cal.get(Calendar.HOUR_OF_DAY), cal.get(Calendar.MINUTE), cal.get(Calendar.SECOND));
        return curTime;
    }

Result would be like : 00:01:30

If it instead returned Option[QueueObject] you could use a construct like getObject.foreach { QueueManager.add }. You can wrap it right inline with Option(getObject).foreach ... because Option[QueueObject](null) is None.

var global = (function() {
   return this;
})();

// Pair object, similar to Python

function Pair(key, value) {
    this.key = key;
    this.value = value;

    this.toString = function() {
       return "(" + key + ", " + value + ")";
    };
}

/**
 * as function
 * @param {String} dataName A String holding the name of your pairs list.
 * @return {Array:Pair} The data list filled
 *    with all pair objects.
 */
Object.prototype.as = function(dataName) {
    var value, key, data;
    global[dataName] = data = [];

    for (key in this) {
       if (this.hasOwnProperty(key)) {
          value = this[key];

          (function() {
             var k = key,
                 v = value;

            data.push(new Pair(k, v));
          })();
       }
    }

    return data;
};

var d = {
   'one': 1,
   'two': 2
};

// Loop on your (key, list) pairs in this way
for (var i = 0, max = d.as("data").length; i < max; i += 1) {
   key = data[i].key;
   value = data[i].value;

   console.log("key: " + key + ", value: " + value);
}

// delete data when u've finished with it.
delete data;

JDK 1.6_07+ contains an app called VisualVM (bin/jvisualvm.exe) that is a nice GUI on top of many of the tools. It seems more comprehensive than JConsole.

ES2017: You can wrap the async code inside a function(say XHRPost) returning a promise( Async code inside the promise).

Then call the function(XHRPost) inside the for loop but with the magical Await keyword. :)

let http = new XMLHttpRequest();_x000D_
let url = 'http://sumersin/forum.social.json';_x000D_
_x000D_
function XHRpost(i) {_x000D_
  return new Promise(function(resolve) {_x000D_
    let params = 'id=nobot&%3Aoperation=social%3AcreateForumPost&subject=Demo' + i + '&message=Here%20is%20the%20Demo&_charset_=UTF-8';_x000D_
    http.open('POST', url, true);_x000D_
    http.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');_x000D_
    http.onreadystatechange = function() {_x000D_
    console.log("Done " + i + "<<<<>>>>>" + http.readyState);_x000D_
          if(http.readyState == 4){_x000D_
              console.log('SUCCESS :',i);_x000D_
              resolve();_x000D_
          }_x000D_
         }_x000D_
    http.send(params);       _x000D_
    });_x000D_
 }_x000D_
 _x000D_
(async () => {_x000D_
    for (let i = 1; i < 5; i++) {_x000D_
        await XHRpost(i);_x000D_
       }_x000D_
})();

This is the solution to find is the checkbox is checked or not. Use the #prop() function//

$("#c_checkbox").on('change', function () {
                    if ($(this).prop('checked')) {
                        // do stuff//
                    }
                });

It's because you've removed the id which is how you're finding the element. This line of code is trying to add id="page_navigation1" to an element with the id named page_navigation1, but it doesn't exist (because you deleted the attribute):

$("#page_navigation1").attr("id","page_navigation1");

Demo:

If you want to add and remove a class that makes your <div> red use:

$( '#page_navigation1' ).addClass( 'red-class' );

And:

$( '#page_navigation1' ).removeClass( 'red-class' );

Where red-class is:

.red-class {
    background-color: red;
}

Recently I was learning about chrono library and thought of implementing a sleep function on my own. Here is the code,

#include <cmath>
#include <chrono>

template <typename rep = std::chrono::seconds::rep, 
          typename period = std::chrono::seconds::period>
void sleep(std::chrono::duration<rep, period> sec)
{
    using sleep_duration = std::chrono::duration<long double, std::nano>;

    std::chrono::steady_clock::time_point start = std::chrono::steady_clock::now();
    std::chrono::steady_clock::time_point end = std::chrono::steady_clock::now();

    long double elapsed_time = 
    std::chrono::duration_cast<sleep_duration>(end - start).count();

    long double sleep_time = 
    std::chrono::duration_cast<sleep_duration>(sec).count();

    while (std::isgreater(sleep_time, elapsed_time)) {
        end = std::chrono::steady_clock::now();
        elapsed_time = std::chrono::duration_cast<sleep_duration>(end - start).count(); 
    }
}

We can use it with any std::chrono::duration type (By default it takes std::chrono::seconds as argument). For example,

#include <cmath>
#include <chrono>

template <typename rep = std::chrono::seconds::rep, 
          typename period = std::chrono::seconds::period>
void sleep(std::chrono::duration<rep, period> sec)
{
    using sleep_duration = std::chrono::duration<long double, std::nano>;

    std::chrono::steady_clock::time_point start = std::chrono::steady_clock::now();
    std::chrono::steady_clock::time_point end = std::chrono::steady_clock::now();

    long double elapsed_time = 
    std::chrono::duration_cast<sleep_duration>(end - start).count();

    long double sleep_time = 
    std::chrono::duration_cast<sleep_duration>(sec).count();

    while (std::isgreater(sleep_time, elapsed_time)) {
        end = std::chrono::steady_clock::now();
        elapsed_time = std::chrono::duration_cast<sleep_duration>(end - start).count(); 
    }
}

using namespace std::chrono_literals;
int main (void) {
    std::chrono::steady_clock::time_point start1 = std::chrono::steady_clock::now();
    
    sleep(5s);  // sleep for 5 seconds
    
    std::chrono::steady_clock::time_point end1 = std::chrono::steady_clock::now();
    
    std::cout << std::setprecision(9) << std::fixed;
    std::cout << "Elapsed time was: " << std::chrono::duration_cast<std::chrono::seconds>(end1-start1).count() << "s\n";
    
    std::chrono::steady_clock::time_point start2 = std::chrono::steady_clock::now();

    sleep(500000ns);  // sleep for 500000 nano seconds/500 micro seconds
    // same as writing: sleep(500us)
    
    std::chrono::steady_clock::time_point end2 = std::chrono::steady_clock::now();
    
    std::cout << "Elapsed time was: " << std::chrono::duration_cast<std::chrono::microseconds>(end2-start2).count() << "us\n";
    return 0;
}

For more information, visit https://en.cppreference.com/w/cpp/header/chrono and see this cppcon talk of Howard Hinnant, https://www.youtube.com/watch?v=P32hvk8b13M. He has two more talks on chrono library. And you can always use the library function, std::this_thread::sleep_for

Note: Outputs may not be accurate. So, don't expect it to give exact timings.

getline is storing the entire line at once, which is not what you want. A simple fix is to have three variables and use cin to get them all. C++ will parse automatically at the spaces.

#include <iostream>
using namespace std;

int main() {
    string a, b, c;
    cin >> a >> b >> c;
    //now you have your three words
    return 0;
}

I don't know what particular "operation" you're talking about, so I can't help you there, but if it's changing characters, read up on string and indices. The C++ documentation is great. As for using namespace std; versus std:: and other libraries, there's already been a lot said. Try these questions on StackOverflow to start.

Details on return values and their meaning

Per 3.6.1 ([basic.start.main]):

A return statement in main has the effect of leaving the main function (destroying any objects with automatic storage duration) and calling std::exit with the return value as the argument. If control reaches the end of main without encountering a return statement, the effect is that of executing

return 0;

The behavior of std::exit is detailed in section 18.5 ([support.start.term]), and describes the status code:

Finally, control is returned to the host environment. If status is zero or EXIT_SUCCESS, an implementation-defined form of the status successful termination is returned. If status is EXIT_FAILURE, an implementation-defined form of the status unsuccessful termination is returned. Otherwise the status returned is implementation-defined.

You could use replicate or sapply:

R> colMeans(replicate(10000, sample(100, size=815, replace=TRUE, prob=NULL))) R> sapply(seq_len(10000), function(...) mean(sample(100, size=815, replace=TRUE, prob=NULL))) 

replicate is a wrapper for the common use of sapply for repeated evaluation of an expression (which will usually involve random number generation).

Fast, simple, but maybe not always right:

>>> [x for x in mylist if x.isdigit()]
['1', '2', '3', '4']

More traditional if you need to get numbers:

new_list = []
for value in mylist:
    try:
        new_list.append(int(value))
    except ValueError:
        continue

Note: The result has integers. Convert them back to strings if needed, replacing the lines above with:

try:
    new_list.append(str(int(value)))

I'll suggest different approach, If the order of the items inside the list is not important at extraction (and each item should be selected only once), then instead of a List you can use a ConcurrentBag which is a thread-safe, unordered collection of objects:

var bag = new ConcurrentBag<string>();
bag.Add("Foo");
bag.Add("Boo");
bag.Add("Zoo");

The EventHandler:

string result;
if (bag.TryTake(out result))
{
    MessageBox.Show(result);
}

The TryTake will attempt to extract an "random" object from the unordered collection.

I put it all together into a list_diff function that simply takes two lists as inputs and returns their difference, while preserving the original order of the first list.

def list_diff(list_a, list_b, verbose=False):

    # returns a difference of list_a and list_b,
    # preserving the original order, unlike set-based solutions

    # get indices of elements to be excluded from list_a
    excl_ind = [i for i, x in enumerate(list_a) if x in list_b]
    if verbose:
        print(excl_ind)

    # filter out the excluded indices, producing a new list 
    new_list = [i for i in list_a if list_a.index(i) not in excl_ind]
    if verbose:
        print(new_list)

    return(new_list)

Sample usage:

my_list = ['a', 'b', 'c', 'd', 'e', 'f', 'woof']
# index = [0, 3, 6]

# define excluded names list
excl_names_list = ['woof', 'c']

list_diff(my_list, excl_names_list)
>> ['a', 'b', 'd', 'e', 'f']

You can try this as well:

from time import perf_counter

t0 = perf_counter()

...

t1 = perf_counter()
time_taken = t1 - t0

I know this very old but for future's sake:

I also used a dynamic dns provider. Wanted to test the website (IIS) BEHIND my (home) router. So i thought i use something like this:

my.dynamic.dnss.ip:8080 (because my router's port 80 was used to admin it).

So this seemed to be the only solution.
But: Paypal seemed to not like port 8080: only port 80 and 443 are allowed (don't know why!!)