You can use it for do something after reload data:

[UIView animateWithDuration:0 animations:^{
    [self.contentTableView reloadData];
} completion:^(BOOL finished) {
    _isUnderwritingUpdate = NO;
}];

function image()
{
    //dynamically add an image and set its attribute
    var img=document.createElement("img");
    img.src="p1.jpg"
    img.id="picture"
    var foo = document.getElementById("fooBar");
    foo.appendChild(img);
}

<span id="fooBar">&nbsp;</span>

In general, static means "associated with the type itself, rather than an instance of the type."

That means you can reference a static variable without having ever created an instances of the type, and any code referring to the variable is referring to the exact same data. Compare this with an instance variable: in that case, there's one independent version of the variable per instance of the class. So for example:

Test x = new Test();
Test y = new Test();
x.instanceVariable = 10;
y.instanceVariable = 20;
System.out.println(x.instanceVariable);

prints out 10: y.instanceVariable and x.instanceVariable are separate, because x and y refer to different objects.

You can refer to static members via references, although it's a bad idea to do so. If we did:

Test x = new Test();
Test y = new Test();
x.staticVariable = 10;
y.staticVariable = 20;
System.out.println(x.staticVariable);

then that would print out 20 - there's only one variable, not one per instance. It would have been clearer to write this as:

Test x = new Test();
Test y = new Test();
Test.staticVariable = 10;
Test.staticVariable = 20;
System.out.println(Test.staticVariable);

That makes the behaviour much more obvious. Modern IDEs will usually suggest changing the second listing into the third.

There is no reason to have an inline declaration initializing the value like the following, as each instance will have its own NUMBER but always with the same value (is immutable and initialized with a literal). This is the same than to have only one final static variable for all instances.

private final int NUMBER = 10;

Therefore if it cannot change, there is no point having one copy per instance.

But, it makes sense if is initialized in a constructor like this:

// No initialization when is declared
private final int number;

public MyClass(int n) {
   // The variable can be assigned in the constructor, but then
   // not modified later.
   number = n;
}

Now, for each instance of MyClass, we can have a different but immutable value of number.

It's probably easiest to create your query object directly as:

  Test.find({
      $and: [
          { $or: [{a: 1}, {b: 1}] },
          { $or: [{c: 1}, {d: 1}] }
      ]
  }, function (err, results) {
      ...
  }

But you can also use the Query#and helper that's available in recent 3.x Mongoose releases:

  Test.find()
      .and([
          { $or: [{a: 1}, {b: 1}] },
          { $or: [{c: 1}, {d: 1}] }
      ])
      .exec(function (err, results) {
          ...
      });

I want to change the width and height of a div. data attributes did not change it. Instead I use:

var size = $("#theme_photo_size").val().split("x");
$("#imageupload_img").width(size[0]);
$("#imageupload_img").attr("data-width", size[0]);
$("#imageupload_img").height(size[1]);
$("#imageupload_img").attr("data-height", size[1]);

be careful:

$("#imageupload_img").data("height", size[1]); //did not work

did not set it

$("#imageupload_img").attr("data-height", size[1]); // yes it worked!

this has set it.

Most shortest code:

strs = {'HA' 'KU' 'LA' 'MA' 'TATA'};
[~,ind]=ismember('KU', strs)

But it returns only first position in strs. If element not found then ind=0.

You need to use linecolor instead of lc, like:

set style line 1 lt 1 lw 3 pt 3 linecolor rgb "red"

"help set style line" gives you more info.

if you have many version of JDK you can run

export JAVA_HOME="/usr/local/env/java/jdk1.8.0_131.jdk/Contents/Home/"

before cordova build, to use a specific version of jdk :)

This simple script allows you to uncheck an already checked radio button. Works on all javascript enabled browsers.

var allRadios = document.getElementsByName('re');_x000D_
var booRadio;_x000D_
var x = 0;_x000D_
for(x = 0; x < allRadios.length; x++){_x000D_
  allRadios[x].onclick = function() {_x000D_
    if(booRadio == this){_x000D_
      this.checked = false;_x000D_
      booRadio = null;_x000D_
    } else {_x000D_
      booRadio = this;_x000D_
    }_x000D_
  };_x000D_
}

<input type='radio' class='radio-button' name='re'>_x000D_
<input type='radio' class='radio-button' name='re'>_x000D_
<input type='radio' class='radio-button' name='re'>

Even if it is an old thread, maybe some is interested.

If it is an option to you to use the same method inside the same class and archive different return types, use generics: Oracle Lesson Generics

Simple example for generic value holder class:

class GenericValue<T> {
  private T myValue;

  public GenericValue(T myValue) { this.myValue = myValue; }

  public T getVal() { return myValue; }
}

And use it like this:

public class ExampleGenericValue {
  public static void main(String[] args) {
    GenericValue<Integer> intVal = new GenericValue<Integer>(10);
    GenericValue<String> strVal = new GenericValue<String>("go on ...");

    System.out.format("I: %d\nS: %s\n", intVal.getVal(), strVal.getVal());
  }
}

... will result in the following output:

I: 10
S: go on ...

Your variable size is declared as: float size;

You can't use a floating point variable as the size of an array - it needs to be an integer value.

You could cast it to convert to an integer:

float *temp = new float[(int)size];

Your other problem is likely because you're writing outside of the bounds of the array:

   float *temp = new float[size];

    //Getting input from the user
    for (int x = 1; x <= size; x++){
        cout << "Enter temperature " << x << ": ";

        // cin >> temp[x];
        // This should be:
        cin >> temp[x - 1];
    }

Arrays are zero based in C++, so this is going to write beyond the end and never write the first element in your original code.

You can get this error if you define a project as an .exe but intent to create a .lib or a .dll

Here is another example of dictionary creation using dict comprehension:

What i am tring to do here is to create a alphabet dictionary where each pair; is the english letter and its corresponding position in english alphabet

>>> import string
>>> dict1 = {value: (int(key) + 1) for key, value in 
enumerate(list(string.ascii_lowercase))}
>>> dict1
{'a': 1, 'c': 3, 'b': 2, 'e': 5, 'd': 4, 'g': 7, 'f': 6, 'i': 9, 'h': 8, 
'k': 11, 'j': 10, 'm': 13, 'l': 12, 'o': 15, 'n': 14, 'q': 17, 'p': 16, 's': 
19, 'r': 18, 'u': 21, 't': 20, 'w': 23, 'v': 22, 'y': 25, 'x': 24, 'z': 26}
>>> 

Notice the use of enumerate here to get a list of alphabets and their indexes in the list and swapping the alphabets and indices to generate the key value pair for dictionary

Hope it gives a good idea of dictionary comp to you and encourages you to use it more often to make your code compact

you can use this code .may be solve the problem

Intent intent = new Intent(Intent.ACTION_VIEW,Uri.parse("http://192.168.43.1:6789/mobile_base/test.apk"));
startActivity(intent);

I faced similar issue with similar logs. I was using JDK 1.6 with apache tomcat 7. Setting java_home to 1.7 resolved the issue.

Let's look at one of the most popular SPA sites, GMail.

1. SPA is extremely good for very responsive sites:

Server-side rendering is not as hard as it used to be with simple techniques like keeping a #hash in the URL, or more recently HTML5 pushState. With this approach the exact state of the web app is embedded in the page URL. As in GMail every time you open a mail a special hash tag is added to the URL. If copied and pasted to other browser window can open the exact same mail (provided they can authenticate). This approach maps directly to a more traditional query string, the difference is merely in the execution. With HTML5 pushState() you can eliminate the #hash and use completely classic URLs which can resolve on the server on the first request and then load via ajax on subsequent requests.

2. With SPA we don't need to use extra queries to the server to download pages.

The number of pages user downloads during visit to my web site?? really how many mails some reads when he/she opens his/her mail account. I read >50 at one go. now the structure of the mails is almost the same. if you will use a server side rendering scheme the server would then render it on every request(typical case). - security concern - you should/ should not keep separate pages for the admins/login that entirely depends upon the structure of you site take paytm.com for example also making a web site SPA does not mean that you open all the endpoints for all the users I mean I use forms auth with my spa web site. - in the probably most used SPA framework Angular JS the dev can load the entire html temple from the web site so that can be done depending on the users authentication level. pre loading html for all the auth types isn't SPA.

3. May be any other advantages? Don't hear about any else..

• these days you can safely assume the client will have javascript enabled browsers.
• only one entry point of the site. As I mentioned earlier maintenance of state is possible you can have any number of entry points as you want but you should have one for sure.
• even in an SPA user only see to what he has proper rights. you don't have to inject every thing at once. loading diff html templates and javascript async is also a valid part of SPA.

Advantages that I can think of are:

1. rendering html obviously takes some resources now every user visiting you site is doing this. also not only rendering major logics are now done client side instead of server side.
2. date time issues - I just give the client UTC time is a pre set format and don't even care about the time zones I let javascript handle it. this is great advantage to where I had to guess time zones based on location derived from users IP.
3. to me state is more nicely maintained in an SPA because once you have set a variable you know it will be there. this gives a feel of developing an app rather than a web page. this helps a lot typically in making sites like foodpanda, flipkart, amazon. because if you are not using client side state you are using expensive sessions.
4. websites surely are extremely responsive - I'll take an extreme example for this try making a calculator in a non SPA website(I know its weird).

Updates from Comments

It doesn't seem like anyone mentioned about sockets and long-polling. If you log out from another client say mobile app, then your browser should also log out. If you don't use SPA, you have to re-create the socket connection every time there is a redirect. This should also work with any updates in data like notifications, profile update etc

An alternate perspective: Aside from your website, will your project involve a native mobile app? If yes, you are most likely going to be feeding raw data to that native app from a server (ie JSON) and doing client-side processing to render it, correct? So with this assertion, you're ALREADY doing a client-side rendering model. Now the question becomes, why shouldn't you use the same model for the website-version of your project? Kind of a no-brainer. Then the question becomes whether you want to render server-side pages only for SEO benefits and convenience of shareable/bookmarkable URLs

As dasblinkenlight already answered, the numbers come from the way that floating point numbers are represented in IEEE-754, and Andreas has a nice breakdown of the maths.

However - be careful that the precision of floating point numbers isn't exactly 6 or 15 significant decimal digits as the table suggests, since the precision of IEEE-754 numbers depends on the number of significant binary digits.

• float has 24 significant binary digits - which depending on the number represented translates to 6-8 decimal digits of precision.

• double has 53 significant binary digits, which is approximately 15 decimal digits.

Another answer of mine has further explanation if you're interested.

You can try this code:

$time = '10:09';

echo date( 'H:i', strtotime( '+1 hour' , strtotime($time) ) );

In Chrome when you load a website from some HTTP server both absolute paths (e.g. /images/sth.png) and relative paths to some upper level directory (e.g. ../images/sth.png) work.

But!

When you load (in Chrome!) a HTML document from local filesystem you cannot access directories above current directory. I.e. you cannot access ../something/something.sth and changing relative path to absolute or anything else won't help.

My problem resolved by this what changes i have done in .net core Do this changes in Appsetting.json

Server=***;Database=***;Persist Security Info=False;User ID=***; Password=***;MultipleActiveResultSets=False;Encrypt=False;TrustServerCertificate=False;Connection Timeout=30

and Do following changes in Package console manager

Scaffold-DbContext "Server=***;Database=***;Persist Security Info=False;User ID=***; Password=***;MultipleActiveResultSets=False;Encrypt=False;TrustServerCertificate=False;Connection Timeout=30;" Microsoft.EntityFrameworkCore.SqlServer -OutputDir Models -Context DatabaseContext -f

Happy coding

Use find from the algorithm header of stl.I've illustrated its use with int type. You can use any type you like as long as you can compare for equality (overload == if you need to for your custom class).

#include <algorithm>
#include <vector>

using namespace std;
int main()
{   
    typedef vector<int> IntContainer;
    typedef IntContainer::iterator IntIterator;

    IntContainer vw;

    //...

    // find 5
    IntIterator i = find(vw.begin(), vw.end(), 5);

    if (i != vw.end()) {
        // found it
    } else {
        // doesn't exist
    }

    return 0;
}

for further investigation: print out the mssql error message:

$dbhandle = mssql_connect($myServer, $myUser, $myPass) or die("Could not connect to database: ".mssql_get_last_message()); 

It is also important to specify the port: On MS SQL Server 2000, separate it with a comma:

$myServer = "10.85.80.229:1443";

or

$myServer = "10.85.80.229,1443";

_{Note: This is not a duplicate, because the OP is aware that the image from cv2.imread is in BGR format (unlike the suggested duplicate question that assumed it was RGB hence the provided answers only address that issue)}

To illustrate, I've opened up this same color JPEG image:

once using the conversion

img = cv2.imread(path)
img_gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)

and another by loading it in gray scale mode

img_gray_mode = cv2.imread(path, cv2.IMREAD_GRAYSCALE)

Like you've documented, the diff between the two images is not perfectly 0, I can see diff pixels in towards the left and the bottom

I've summed up the diff too to see

import numpy as np
np.sum(diff)
# I got 6143, on a 494 x 750 image

I tried all cv2.imread() modes

Among all the IMREAD_ modes for cv2.imread(), only IMREAD_COLOR and IMREAD_ANYCOLOR can be converted using COLOR_BGR2GRAY, and both of them gave me the same diff against the image opened in IMREAD_GRAYSCALE

The difference doesn't seem that big. My guess is comes from the differences in the numeric calculations in the two methods (loading grayscale vs conversion to grayscale)

Naturally what you want to avoid is fine tuning your code on a particular version of the image just to find out it was suboptimal for images coming from a different source.

In brief, let's not mix the versions and types in the processing pipeline.

So I'd keep the image sources homogenous, e.g. if you have capturing the image from a video camera in BGR, then I'd use BGR as the source, and do the BGR to grayscale conversion cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)

Vice versa if my ultimate source is grayscale then I'd open the files and the video capture in gray scale cv2.imread(path, cv2.IMREAD_GRAYSCALE)

The "Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files" answer did not work for me but The BouncyCastle's JCE provider suggestion did.

Here are the steps I took using Java 1.6.0_65-b14-462 on Mac OSC 10.7.5

1) Download these jars:

• bcprov-jdk15on-154.jar

• bcprov-ext-jdk15on-154.jar

2) move these jars to $JAVA_HOME/lib/ext

3) edit $JAVA_HOME/lib/security/java.security as follows: security.provider.1=org.bouncycastle.jce.provider.BouncyCastleProvider

restart app using JRE and give it a try

with jquery you could do something like

var nameOfLabel = someInput.attr('id');
var label = $("label[for='" + nameOfLabel + "']");

A callback function is simply a function you pass into another function so that function can call it at a later time. This is commonly seen in asynchronous APIs; the API call returns immediately because it is asynchronous, so you pass a function into it that the API can call when it's done performing its asynchronous task.

The simplest example I can think of in JavaScript is the setTimeout() function. It's a global function that accepts two arguments. The first argument is the callback function and the second argument is a delay in milliseconds. The function is designed to wait the appropriate amount of time, then invoke your callback function.

setTimeout(function () {
  console.log("10 seconds later...");
}, 10000);

You may have seen the above code before but just didn't realize the function you were passing in was called a callback function. We could rewrite the code above to make it more obvious.

var callback = function () {
  console.log("10 seconds later...");
};
setTimeout(callback, 10000);

Callbacks are used all over the place in Node because Node is built from the ground up to be asynchronous in everything that it does. Even when talking to the file system. That's why a ton of the internal Node APIs accept callback functions as arguments rather than returning data you can assign to a variable. Instead it will invoke your callback function, passing the data you wanted as an argument. For example, you could use Node's fs library to read a file. The fs module exposes two unique API functions: readFile and readFileSync.

The readFile function is asynchronous while readFileSync is obviously not. You can see that they intend you to use the async calls whenever possible since they called them readFile and readFileSync instead of readFile and readFileAsync. Here is an example of using both functions.

Synchronous:

var data = fs.readFileSync('test.txt');
console.log(data);

The code above blocks thread execution until all the contents of test.txt are read into memory and stored in the variable data. In node this is typically considered bad practice. There are times though when it's useful, such as when writing a quick little script to do something simple but tedious and you don't care much about saving every nanosecond of time that you can.

Asynchronous (with callback):

var callback = function (err, data) {
  if (err) return console.error(err);
  console.log(data);
};
fs.readFile('test.txt', callback);

First we create a callback function that accepts two arguments err and data. One problem with asynchronous functions is that it becomes more difficult to trap errors so a lot of callback-style APIs pass errors as the first argument to the callback function. It is best practice to check if err has a value before you do anything else. If so, stop execution of the callback and log the error.

Synchronous calls have an advantage when there are thrown exceptions because you can simply catch them with a try/catch block.

try {
  var data = fs.readFileSync('test.txt');
  console.log(data);
} catch (err) {
  console.error(err);
}

In asynchronous functions it doesn't work that way. The API call returns immediately so there is nothing to catch with the try/catch. Proper asynchronous APIs that use callbacks will always catch their own errors and then pass those errors into the callback where you can handle it as you see fit.

In addition to callbacks though, there is another popular style of API that is commonly used called the promise. If you'd like to read about them then you can read the entire blog post I wrote based on this answer here.

In my case, the accepted answer didn't work:

f.sort_values(by=["c1","c2"], ascending=[False, True])

Only the following worked as expected:

f = f.sort_values(by=["c1","c2"], ascending=[False, True])

If you want date and time separate then use below expressions: Date and Time Expression

Expression1 for current date : =formatdatetime(today) its return date is = 11/15/2016

Expression2 for current time : =CDate(Now).ToString("hh:mm tt") its return time is = 3:44 PM

This report printed on Expression1 at Expression2

Output will be : Output of Both Expression

This report printed on 11/15/2016 at 3:44 PM

Here is a way to add Parameters to the script if you used

pipeline.Commands.AddScript(Script);

This is with using an HashMap as paramaters the key being the name of the variable in the script and the value is the value of the variable.

pipeline.Commands.AddScript(script));
FillVariables(pipeline, scriptParameter);
Collection<PSObject> results = pipeline.Invoke();

And the fill variable method is:

private static void FillVariables(Pipeline pipeline, Hashtable scriptParameters)
{
  // Add additional variables to PowerShell
  if (scriptParameters != null)
  {
    foreach (DictionaryEntry entry in scriptParameters)
    {
      CommandParameter Param = new CommandParameter(entry.Key as String, entry.Value);
      pipeline.Commands[0].Parameters.Add(Param);
    }
  }
}

this way you can easily add multiple parameters to a script. I've also noticed that if you want to get a value from a variable in you script like so:

Object resultcollection = runspace.SessionStateProxy.GetVariable("results");

//results being the name of the v

you'll have to do it the way I showed because for some reason if you do it the way Kosi2801 suggests the script variables list doesn't get filled with your own variables.

Kotlin, 2021

// set date as button text if pressed
btnDate.setOnClickListener(View.OnClickListener {

    val dpd = DatePickerDialog(
        this,
        { view, year, monthOfYear, dayOfMonth ->
            val selectDate = Calendar.getInstance()
            selectDate.set(Calendar.YEAR, year)
            selectDate.set(Calendar.MONTH, monthOfYear)
            selectDate.set(Calendar.DAY_OF_MONTH, dayOfMonth)

            var formatDate = SimpleDateFormat("dd/MM/yyyy", Locale.getDefault())
            val date = formatDate.format(selectDate.time)
            Toast.makeText(this, date, Toast.LENGTH_SHORT).show()
            btnDate.text = date
        }, 1990, 6, 6
    )

    val calendar = Calendar.getInstance()
    val year = calendar[Calendar.YEAR]
    val month = calendar[Calendar.MONTH]
    val day = calendar[Calendar.DAY_OF_MONTH]
    dpd.datePicker.minDate = GregorianCalendar(year - 90, month, day, 0, 0).timeInMillis
    dpd.datePicker.maxDate = GregorianCalendar(year - 10, month, day, 0, 0).timeInMillis
    dpd.show()
})

Styles.xml

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
    <!-- This is main Theme Style for your application! -->
    <item name="android:datePickerDialogTheme">@style/MyDatePickerDialogTheme</item>
</style>

<style name="MyDatePickerDialogTheme" parent="android:Theme.Material.Dialog">
    <item name="android:datePickerStyle">@style/MyDatePickerStyle</item>
</style>

<style name="MyDatePickerStyle" parent="@android:style/Widget.Material.DatePicker">
    <item name="android:headerBackground">#A500FF</item>
</style>

PHP arrays are both integer-indexed and string-indexed. You can even mix them:

array('red', 'green', 'white', 'color3'=>'blue', 3=>'yellow');

What do you want the index to be for the value 'blue'? Is it 3? But that's actually the index of the value 'yellow', so that would be an ambiguity.

Another solution for you is to coerce the array to an integer-indexed list of values.

foreach (array_values($array) as $i => $value) {
  echo "$i: $value\n";
}

Output:

0: red
1: green
2: white
3: blue
4: yellow

  element: HTMLElement;

  constructor() {}

  fakeClick(){
    this.element = document.getElementById('ButtonX') as HTMLElement;
    this.element.click();
  }

try this. this will work on both Firefox and chrome.

<input type="text" value="test" autofocus="autofocus" onfocus="this.select()">

I would like to give one additional answer, while the other ones will suffice in most cases.

I wanted to write a string over multiple lines, but its contents needed to be single-line.

sql="                       \
SELECT c1, c2               \
from Table1, ${TABLE2}      \
where ...                   \
"

I am sorry if this if a bit off-topic (I did not need this for SQL). However, this post comes up among the first results when searching for multi-line shell variables and an additional answer seemed appropriate.

Using double ampersands will run the second command, only if the first one succeeds:

cd Desktop/project-directory && atom .

Where as, using only one ampersand will attempt to run both commands, even if the first fails:

cd Desktop/project-directory & atom .

Verify you haven't goofed your remote URL.

I just wanted to also mention that I ran into this after enabling Git as a CVS in a local Jenkins build configuration. It appears that Jenkins checked out the most recent commit of the branch I gave it and also reset my remote to correspond to the paths I gave it to the repo. Had to checkout my feature branch again and fix my origin remote url with 'git remote set-url'. Don't go pointing a build tool to your working directory or you'll have a bad time. My remote was set to a file path to my working directory, so it naturally reported everything up-to-date when I attempted to push changes with the same source and destination.

Assuming the type is CV_8UC3 you would do this:

for(int i = 0; i < foo.rows; i++)
{
    for(int j = 0; j < foo.cols; j++)
    {
        Vec3b bgrPixel = foo.at<Vec3b>(i, j);

        // do something with BGR values...
    }
}

Here is the documentation for Vec3b. Hope that helps! Also, don't forget OpenCV stores things internally as BGR not RGB.

EDIT :
For performance reasons, you may want to use direct access to the data buffer in order to process the pixel values:

Here is how you might go about this:

uint8_t* pixelPtr = (uint8_t*)foo.data;
int cn = foo.channels();
Scalar_<uint8_t> bgrPixel;

for(int i = 0; i < foo.rows; i++)
{
    for(int j = 0; j < foo.cols; j++)
    {
        bgrPixel.val[0] = pixelPtr[i*foo.cols*cn + j*cn + 0]; // B
        bgrPixel.val[1] = pixelPtr[i*foo.cols*cn + j*cn + 1]; // G
        bgrPixel.val[2] = pixelPtr[i*foo.cols*cn + j*cn + 2]; // R

        // do something with BGR values...
    }
}

Or alternatively:

int cn = foo.channels();
Scalar_<uint8_t> bgrPixel;

for(int i = 0; i < foo.rows; i++)
{
    uint8_t* rowPtr = foo.row(i);
    for(int j = 0; j < foo.cols; j++)
    {
        bgrPixel.val[0] = rowPtr[j*cn + 0]; // B
        bgrPixel.val[1] = rowPtr[j*cn + 1]; // G
        bgrPixel.val[2] = rowPtr[j*cn + 2]; // R

        // do something with BGR values...
    }
}

This might help...

test_list = [5, 8]
test_list[0] = None
print test_list
#prints [None, 8]

The listed return type of the method is Task<string>. You're trying to return a string. They are not the same, nor is there an implicit conversion from string to Task<string>, hence the error.

You're likely confusing this with an async method in which the return value is automatically wrapped in a Task by the compiler. Currently that method is not an async method. You almost certainly meant to do this:

private async Task<string> methodAsync() 
{
    await Task.Delay(10000);
    return "Hello";
}

There are two key changes. First, the method is marked as async, which means the return type is wrapped in a Task, making the method compile. Next, we don't want to do a blocking wait. As a general rule, when using the await model always avoid blocking waits when you can. Task.Delay is a task that will be completed after the specified number of milliseconds. By await-ing that task we are effectively performing a non-blocking wait for that time (in actuality the remainder of the method is a continuation of that task).

If you prefer a 4.0 way of doing it, without using await , you can do this:

private Task<string> methodAsync() 
{
    return Task.Delay(10000)
        .ContinueWith(t => "Hello");
}

The first version will compile down to something that is more or less like this, but it will have some extra boilerplate code in their for supporting error handling and other functionality of await we aren't leveraging here.

If your Thread.Sleep(10000) is really meant to just be a placeholder for some long running method, as opposed to just a way of waiting for a while, then you'll need to ensure that the work is done in another thread, instead of the current context. The easiest way of doing that is through Task.Run:

private Task<string> methodAsync() 
{
    return Task.Run(()=>
        {
            SomeLongRunningMethod();
            return "Hello";
        });
}

Or more likely:

private Task<string> methodAsync() 
{
    return Task.Run(()=>
        {
            return SomeLongRunningMethodThatReturnsAString();
        });
}

Updated 2018

Here is another variation on the Bootstrap 4.1 Navbar with multi-level dropdown. This one uses minimal CSS for the submenu, and can be re-positioned as desired:

https://www.codeply.com/go/nG6iMAmI2X

.dropdown-submenu {
  position: relative;
}

.dropdown-submenu .dropdown-menu {
  top: 0;
  left: 100%;
  margin-top: -1px;
}

jQuery to control display of submenus:

$('.dropdown-submenu > a').on("click", function(e) {
    var submenu = $(this);
    $('.dropdown-submenu .dropdown-menu').removeClass('show');
    submenu.next('.dropdown-menu').addClass('show');
    e.stopPropagation();
});

$('.dropdown').on("hidden.bs.dropdown", function() {
    // hide any open menus when parent closes
    $('.dropdown-menu.show').removeClass('show');
});

See this answer for activating the Bootstrap 4 submenus on hover

Use Array.from(), which takes an array-like object (such as arguments) as argument and converts it to array:

(function() {_x000D_
  console.log(Array.from(arguments));_x000D_
}(1, 2, 3));

Note that it doesn't work in some older browsers like IE 11, so if you want to support these browsers, you should use Babel.

Firstly, the below method doesn't compile as it is missing the return type and it should be Long.MAX_VALUE in place of Long.Max_value.

public static boolean isBiggerThanMaxLong(long value) {
      return value > Long.Max_value;
}

The above method can never return true as you are comparing a long value with Long.MAX_VALUE , see the method signature you can pass only long there.Any long can be as big as the Long.MAX_VALUE, it can't be bigger than that.

You can try something like this with BigInteger class :

public static boolean isBiggerThanMaxLong(BigInteger l){
    return l.compareTo(BigInteger.valueOf(Long.MAX_VALUE))==1?true:false;
}

The below code will return true :

BigInteger big3 = BigInteger.valueOf(Long.MAX_VALUE).
                  add(BigInteger.valueOf(Long.MAX_VALUE));
System.out.println(isBiggerThanMaxLong(big3)); // prints true

try this C# code to drop your database

public static void DropDatabases(string dataBase) {

        string sql =  "ALTER DATABASE "  + dataBase + "SET SINGLE_USER WITH ROLLBACK IMMEDIATE" ;

        using (System.Data.SqlClient.SqlConnection connection = new System.Data.SqlClient.SqlConnection(ConfigurationManager.ConnectionStrings["DBRestore"].ConnectionString))
        {
            connection.Open();
            using (System.Data.SqlClient.SqlCommand command = new System.Data.SqlClient.SqlCommand(sql, connection))
            {
                command.CommandType = CommandType.Text;
                command.CommandTimeout = 7200;
                command.ExecuteNonQuery();
            }
            sql = "DROP DATABASE " + dataBase;
            using (System.Data.SqlClient.SqlCommand command = new System.Data.SqlClient.SqlCommand(sql, connection))
            {
                command.CommandType = CommandType.Text;
                command.CommandTimeout = 7200;
                command.ExecuteNonQuery();
            }
        }
    }

This error may also happen if Java tries to connect to MySQL over SSL, but something goes wrong. (In my case, I was configuring Payara Server 5.193.1 connection pools to MySQL.)

Some people suggested setting useSSL=false. However, since Connector/J version 8.0.13, that setting is deprecated. Here's an excerpt from MySQL Connector/J 8.0 Configuration Properties:

sslMode

By default, network connections are SSL encrypted; this property permits secure connections to be turned off, or a different levels of security to be chosen. The following values are allowed: DISABLED - Establish unencrypted connections; PREFERRED - (default) Establish encrypted connections if the server enabled them, otherwise fall back to unencrypted connections; REQUIRED - Establish secure connections if the server enabled them, fail otherwise; VERIFY_CA - Like REQUIRED but additionally verify the server TLS certificate against the configured Certificate Authority (CA) certificates; VERIFY_IDENTITY - Like VERIFY_CA, but additionally verify that the server certificate matches the host to which the connection is attempted.

This property replaced the deprecated legacy properties useSSL, requireSSL, and verifyServerCertificate, which are still accepted but translated into a value for sslMode if sslMode is not explicitly set: useSSL=false is translated to sslMode=DISABLED; {"useSSL=true", "requireSSL=false", "verifyServerCertificate=false"} is translated to sslMode=PREFERRED; {"useSSL=true", "requireSSL=true", "verifyServerCertificate=false"} is translated to sslMode=REQUIRED; {"useSSL=true" AND "verifyServerCertificate=true"} is translated to sslMode=VERIFY_CA. There is no equivalent legacy settings for sslMode=VERIFY_IDENTITY. Note that, for ALL server versions, the default setting of sslMode is PREFERRED, and it is equivalent to the legacy settings of useSSL=true, requireSSL=false, and verifyServerCertificate=false, which are different from their default settings for Connector/J 8.0.12 and earlier in some situations. Applications that continue to use the legacy properties and rely on their old default settings should be reviewed.

The legacy properties are ignored if sslMode is set explicitly. If none of sslMode or useSSL is set explicitly, the default setting of sslMode=PREFERRED applies.

Default: PREFERRED

Since version: 8.0.13

So, in my case, setting sslMode=DISABLED was all I needed to resolve the issue. This was on a test machine. But for production, the secure solution would be properly configuring the Java client and MySQL server to use SSL.

Notice that by disabling SSL, you might also have to set allowPublicKeyRetrieval=true. (Again, not a wise decision from security standpoint). Further information is provided in MySQL ConnectionString Options:

AllowPublicKeyRetrieval

If the user account uses sha256_password authentication, the password must be protected during transmission; TLS is the preferred mechanism for this, but if it is not available then RSA public key encryption will be used. To specify the server’s RSA public key, use the ServerRSAPublicKeyFile connection string setting, or set AllowPublicKeyRetrieval=True to allow the client to automatically request the public key from the server. Note that AllowPublicKeyRetrieval=True could allow a malicious proxy to perform a MITM attack to get the plaintext password, so it is False by default and must be explicitly enabled.

You can do it with an confirm() message using Javascript.

A lot of the answers are the shortest way, not the necessarily the best way if the column has lots of nulls. Breaking the checks up allows the optimizer to evaluate the check faster as it doesn't have to do work on the other condition.

(stringexpression IS NOT NULL AND trim(stringexpression) != '')

The string comparison doesn't need to be evaluated since the first condition is false.

Blundell's first answer didn't work for me. However it showed me the right way. I have done the same thing like this:

> for i in `git ls-files -i --exclude-from=.gitignore`; do git rm --cached $i; done
> git commit -m 'Removed all files that are in the .gitignore'
> git push origin master

I advise you to check the files to be deleted first by running the below statement:

git ls-files -i --exclude-from=.gitignore

I was using a default .gitignore file for visual studio and I noticed that it was removing all log and bin folders in the project which was not my intended action.

@Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

 @Override
    public boolean onOptionsItemSelected(MenuItem item) {
         int id = item.getItemId();
         if (id == R.id.standingsButton) {
            startActivity(new Intent(MainActivity.this,StandingsActivity.class));
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

On Ubuntu:

chromium-browser --disable-web-security

For more details/switches:

http://peter.sh/experiments/chromium-command-line-switches/

Referenced from

The short answer is yes, yes there is a way to get around mysql_real_escape_string(). #For Very OBSCURE EDGE CASES!!!

The long answer isn't so easy. It's based off an attack demonstrated here.

The Attack

So, let's start off by showing the attack...

mysql_query('SET NAMES gbk');
$var = mysql_real_escape_string("\xbf\x27 OR 1=1 /*");
mysql_query("SELECT * FROM test WHERE name = '$var' LIMIT 1");

In certain circumstances, that will return more than 1 row. Let's dissect what's going on here:

1. Selecting a Character Set

   mysql_query('SET NAMES gbk');
   

   For this attack to work, we need the encoding that the server's expecting on the connection both to encode ' as in ASCII i.e. 0x27 and to have some character whose final byte is an ASCII \ i.e. 0x5c. As it turns out, there are 5 such encodings supported in MySQL 5.6 by default: big5, cp932, gb2312, gbk and sjis. We'll select gbk here.

   Now, it's very important to note the use of SET NAMES here. This sets the character set ON THE SERVER. If we used the call to the C API function mysql_set_charset(), we'd be fine (on MySQL releases since 2006). But more on why in a minute...

2. The Payload

   The payload we're going to use for this injection starts with the byte sequence 0xbf27. In gbk, that's an invalid multibyte character; in latin1, it's the string ¿'. Note that in latin1 and gbk, 0x27 on its own is a literal ' character.

   We have chosen this payload because, if we called addslashes() on it, we'd insert an ASCII \ i.e. 0x5c, before the ' character. So we'd wind up with 0xbf5c27, which in gbk is a two character sequence: 0xbf5c followed by 0x27. Or in other words, a valid character followed by an unescaped '. But we're not using addslashes(). So on to the next step...

3. mysql_real_escape_string()

   The C API call to mysql_real_escape_string() differs from addslashes() in that it knows the connection character set. So it can perform the escaping properly for the character set that the server is expecting. However, up to this point, the client thinks that we're still using latin1 for the connection, because we never told it otherwise. We did tell the server we're using gbk, but the client still thinks it's latin1.

   Therefore the call to mysql_real_escape_string() inserts the backslash, and we have a free hanging ' character in our "escaped" content! In fact, if we were to look at $var in the gbk character set, we'd see:

   ?' OR 1=1 /*

   Which is exactly what the attack requires.

4. The Query

   This part is just a formality, but here's the rendered query:

   SELECT * FROM test WHERE name = '?' OR 1=1 /*' LIMIT 1
   

Congratulations, you just successfully attacked a program using mysql_real_escape_string()...

The Bad

It gets worse. PDO defaults to emulating prepared statements with MySQL. That means that on the client side, it basically does a sprintf through mysql_real_escape_string() (in the C library), which means the following will result in a successful injection:

$pdo->query('SET NAMES gbk');
$stmt = $pdo->prepare('SELECT * FROM test WHERE name = ? LIMIT 1');
$stmt->execute(array("\xbf\x27 OR 1=1 /*"));

Now, it's worth noting that you can prevent this by disabling emulated prepared statements:

$pdo->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);

This will usually result in a true prepared statement (i.e. the data being sent over in a separate packet from the query). However, be aware that PDO will silently fallback to emulating statements that MySQL can't prepare natively: those that it can are listed in the manual, but beware to select the appropriate server version).

The Ugly

I said at the very beginning that we could have prevented all of this if we had used mysql_set_charset('gbk') instead of SET NAMES gbk. And that's true provided you are using a MySQL release since 2006.

If you're using an earlier MySQL release, then a bug in mysql_real_escape_string() meant that invalid multibyte characters such as those in our payload were treated as single bytes for escaping purposes even if the client had been correctly informed of the connection encoding and so this attack would still succeed. The bug was fixed in MySQL 4.1.20, 5.0.22 and 5.1.11.

But the worst part is that PDO didn't expose the C API for mysql_set_charset() until 5.3.6, so in prior versions it cannot prevent this attack for every possible command! It's now exposed as a DSN parameter.

The Saving Grace

As we said at the outset, for this attack to work the database connection must be encoded using a vulnerable character set. utf8mb4 is not vulnerable and yet can support every Unicode character: so you could elect to use that instead—but it has only been available since MySQL 5.5.3. An alternative is utf8, which is also not vulnerable and can support the whole of the Unicode Basic Multilingual Plane.

Alternatively, you can enable the NO_BACKSLASH_ESCAPES SQL mode, which (amongst other things) alters the operation of mysql_real_escape_string(). With this mode enabled, 0x27 will be replaced with 0x2727 rather than 0x5c27 and thus the escaping process cannot create valid characters in any of the vulnerable encodings where they did not exist previously (i.e. 0xbf27 is still 0xbf27 etc.)—so the server will still reject the string as invalid. However, see @eggyal's answer for a different vulnerability that can arise from using this SQL mode.

Safe Examples

The following examples are safe:

mysql_query('SET NAMES utf8');
$var = mysql_real_escape_string("\xbf\x27 OR 1=1 /*");
mysql_query("SELECT * FROM test WHERE name = '$var' LIMIT 1");

Because the server's expecting utf8...

mysql_set_charset('gbk');
$var = mysql_real_escape_string("\xbf\x27 OR 1=1 /*");
mysql_query("SELECT * FROM test WHERE name = '$var' LIMIT 1");

Because we've properly set the character set so the client and the server match.

$pdo->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
$pdo->query('SET NAMES gbk');
$stmt = $pdo->prepare('SELECT * FROM test WHERE name = ? LIMIT 1');
$stmt->execute(array("\xbf\x27 OR 1=1 /*"));

Because we've turned off emulated prepared statements.

$pdo = new PDO('mysql:host=localhost;dbname=testdb;charset=gbk', $user, $password);
$stmt = $pdo->prepare('SELECT * FROM test WHERE name = ? LIMIT 1');
$stmt->execute(array("\xbf\x27 OR 1=1 /*"));

Because we've set the character set properly.

$mysqli->query('SET NAMES gbk');
$stmt = $mysqli->prepare('SELECT * FROM test WHERE name = ? LIMIT 1');
$param = "\xbf\x27 OR 1=1 /*";
$stmt->bind_param('s', $param);
$stmt->execute();

Because MySQLi does true prepared statements all the time.

Wrapping Up

If you:

• Use Modern Versions of MySQL (late 5.1, all 5.5, 5.6, etc) AND mysql_set_charset() / $mysqli->set_charset() / PDO's DSN charset parameter (in PHP = 5.3.6)

OR

• Don't use a vulnerable character set for connection encoding (you only use utf8 / latin1 / ascii / etc)

You're 100% safe.

Otherwise, you're vulnerable even though you're using mysql_real_escape_string()...

Just put

export HOME=/blah/whatever

at the point in the script where you want the change to happen. Since each process has its own set of environment variables, this definition will automatically cease to have any significance when the script terminates (and with it the instance of bash that has a changed environment).

spinner_selector.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/spinner_enabled" android:state_enabled="true" android:state_pressed="false" /> <!-- enable -->
    <item android:drawable="@drawable/spinner_clicked" android:state_enabled="true" android:state_pressed="true" />
    <item android:drawable="@drawable/spinner_disabled" android:state_enabled="false" /> <!-- disable -->
</selector>

spinner_enabled.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">

<item>
    <shape android:shape="rectangle" >
        <solid android:color="#00f" />
        <padding android:bottom="2dp" />
    </shape>
</item>

<item>
    <shape android:shape="rectangle" >
        <solid android:color="#fff" />
    </shape>
</item>

<item>
    <rotate
        android:fromDegrees="90"
        android:pivotX="100%"
        android:pivotY="60%"
        android:toDegrees="135">
        <rotate
            android:fromDegrees="135"
            android:pivotX="100%"
            android:pivotY="60%"
            android:toDegrees="45">
            <shape android:shape="rectangle">
                <stroke
                    android:width="10dp"
                    android:color="#00f" />
                <solid android:color="#00f" />
            </shape>
        </rotate>
    </rotate>
</item>
</layer-list>

spinner_disabled.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">

<item>
    <shape android:shape="rectangle" >
        <solid android:color="#ddf" />
        <padding android:bottom="2dp" />
    </shape>
</item>

<item>
    <shape android:shape="rectangle" >
        <solid android:color="#fff" />
    </shape>
</item>

<item>
    <rotate
        android:fromDegrees="90"
        android:pivotX="100%"
        android:pivotY="60%"
        android:toDegrees="135">
        <rotate
            android:fromDegrees="135"
            android:pivotX="100%"
            android:pivotY="60%"
            android:toDegrees="45">
            <shape android:shape="rectangle">
                <stroke
                    android:width="10dp"
                    android:color="#ddf" />
                <solid android:color="#ddf" />
            </shape>
        </rotate>
    </rotate>
</item>
</layer-list>

spinner_focused.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">

<item>
    <shape android:shape="rectangle" >
        <solid android:color="#00f" />
        <padding android:bottom="2dp" />
    </shape>
</item>

<item>
    <shape android:shape="rectangle" >
        <solid android:color="#BBDEFB" />
    </shape>
</item>

<item>
    <rotate
        android:fromDegrees="90"
        android:pivotX="100%"
        android:pivotY="60%"
        android:toDegrees="135">
        <rotate
            android:fromDegrees="135"
            android:pivotX="100%"
            android:pivotY="60%"
            android:toDegrees="45">
            <shape android:shape="rectangle">
                <stroke
                    android:width="10dp"
                    android:color="#00f" />
                <solid android:color="#00f" />
            </shape>
        </rotate>
    </rotate>
</item>
</layer-list>

it works fine without nine-patch pictures. api 10+

I wrote a very simple class for exporting to "Excel XML" aka SpreadsheetML. It's not quite as convenient for the end user as XSLX (depending on file extension and Excel version, they may get a warning message), but it's a lot easier to work with than XLS or XLSX.

http://github.com/elidickinson/php-export-data

Per this comment (and I checked that this is true), rado's answer is very close but leaves git in a detached head state. Instead, remove HEAD and use this to remove <commit-id> from the branch you're on:

git rebase --onto <commit-id>^ <commit-id>

If you have the SUPER privilege, you can set the global server time zone value at runtime with this statement:

mysql> SET GLOBAL time_zone = timezone;

if (in_array($id,$user_access_arr)==0)
{
    $this->Session->setFlash(__('Access Denied! You are not eligible to access this.'), 'flash_custom_success');
    return $this->redirect(array('controller'=>'Dashboard','action'=>'index'));
}

You first have to tell Gnuplot to use a style that uses points, e.g. with points or with linespoints. Try for example:

plot sin(x) with points

Output:

Now try:

plot sin(x) with points pointtype 5

Output:

You may also want to look at the output from the test command which shows you the capabilities of the current terminal. Here are the capabilities for my pngairo terminal:

I came to add:

map(str.strip, string.split(','))

but saw it had already been mentioned by Jason Orendorff in a comment.

Reading Glenn Maynard's comment in the same answer suggesting list comprehensions over map I started to wonder why. I assumed he meant for performance reasons, but of course he might have meant for stylistic reasons, or something else (Glenn?).

So a quick (possibly flawed?) test on my box applying the three methods in a loop revealed:

[word.strip() for word in string.split(',')]
$ time ./list_comprehension.py 
real    0m22.876s

map(lambda s: s.strip(), string.split(','))
$ time ./map_with_lambda.py 
real    0m25.736s

map(str.strip, string.split(','))
$ time ./map_with_str.strip.py 
real    0m19.428s

making map(str.strip, string.split(',')) the winner, although it seems they are all in the same ballpark.

Certainly though map (with or without a lambda) should not necessarily be ruled out for performance reasons, and for me it is at least as clear as a list comprehension.

Edit:

Python 2.6.5 on Ubuntu 10.04

<form (keydown)="someMethod($event)">
     <input type="text">
</form>

someMethod(event:any){
   if(event.keyCode == 13){
      alert('Entered Click Event!');
   }else{
   }
}

How about using a simple loop to count the occurrences of number of spaces!?

txt = "Just an example here move along" _x000D_
count = 1_x000D_
for i in txt:_x000D_
if i == " ":_x000D_
   count += 1_x000D_
print(count)

You can consider using memory-mapped files, via FileChannels .

Generally a lot faster for large files. There are performance trade-offs that could make it slower, so YMMV.

Related answer: Java NIO FileChannel versus FileOutputstream performance / usefulness

If X and beta do not have the same shape as the second term in the rhs of your last line (i.e. nsample), then you will get this type of error. To add an array to a tuple of arrays, they all must be the same shape.

I would recommend looking at the numpy broadcasting rules.

The official answer from Facebook (http://developers.facebook.com/bugs/282710765082535):

Mikhail,

The facebook android sdk no longer supports android 1.5 and 1.6. Please upgrade to the next api version.

Good luck with your implementation.

The easiest way to do this is writing a copy constructor in the MyClass class.

Something like this:

namespace Example
{
    class MyClass
    {
        public int val;

        public MyClass()
        {
        }

        public MyClass(MyClass other)
        {
            val = other.val;
        }
    }
}

The second constructor simply accepts a parameter of his own type (the one you want to copy) and creates a new object assigned with the same value

class Program
{
    static void Main(string[] args)
    {
        MyClass objectA = new MyClass();
        MyClass objectB = new MyClass(objectA);
        objectA.val = 10;
        objectB.val = 20;
        Console.WriteLine("objectA.val = {0}", objectA.val);
        Console.WriteLine("objectB.val = {0}", objectB.val);
        Console.ReadKey();
    }
}

output:

objectA.val = 10

objectB.val = 20               

For this answer, I refer to querySelector and querySelectorAll as querySelector* and to getElementById, getElementsByClassName, getElementsByTagName, and getElementsByName as getElement*.

Main Differences

1. querySelector* is more flexible, as you can pass it any CSS3 selector, not just simple ones for id, tag, or class.
2. The performance of querySelector changes with the size of the DOM that it is invoked on.* To be precise, querySelector* calls run in O(n) time and getElement* calls run in O(1) time, where n is the total number of all children of the element or document it is invoked on. This fact seems to be the least well-known, so I am bolding it.
3. getElement* calls return direct references to the DOM, whereas querySelector* internally makes copies of the selected elements before returning references to them. These are referred to as "live" and "static" elements respectively. This is NOT strictly related to the types that they return. There is no way I know of to tell if an element is live or static programmatically, as it depends on whether the element was copied at some point, and is not an intrinsic property of the data. Changes to live elements apply immediately - changing a live element changes it directly in the DOM, and therefore the very next line of JS can see that change, and it propagates to any other live elements referencing that element immediately. Changes to static elements are only written back to the DOM after the current script is done executing. These extra copy and write steps have some small, and generally negligible, effect on performance.
4. The return types of these calls vary. querySelector and getElementById both return a single element. querySelectorAll and getElementsByName both return NodeLists, being newer functions that were added after HTMLCollection went out of fashion. The older getElementsByClassName and getElementsByTagName both return HTMLCollections. Again, this is essentially irrelevant to whether the elements are live or static.

These concepts are summarized in the following table.

Function               | Live? | Type           | Time Complexity
querySelector          |   N   | Element        |  O(n)
querySelectorAll       |   N   | NodeList       |  O(n)
getElementById         |   Y   | Element        |  O(1)
getElementsByClassName |   Y   | HTMLCollection |  O(1)
getElementsByTagName   |   Y   | HTMLCollection |  O(1)
getElementsByName      |   Y   | NodeList       |  O(1)

Details, Tips, and Examples

• HTMLCollections are not as array-like as NodeLists and do not support .forEach(). I find the spread operator useful to work around this:

  [...document.getElementsByClassName("someClass")].forEach()

• Every element, and the global document, have access to all of these functions except for getElementById and getElementsByName, which are only implemented on document.

• Chaining getElement* calls instead of using querySelector* will improve performance, especially on very large DOMs. Even on small DOMs and/or with very long chains, it is generally faster. However, unless you know you need the performance, the readability of querySelector* should be preferred. querySelectorAll is often harder to rewrite, because you must select elements from the NodeList or HTMLCollection at every step. For example, the following code does not work:

  document.getElementsByClassName("someClass").getElementsByTagName("div")

  because you can only use getElements* on single elements, not collections. For example:

  document.querySelector("#someId .someClass div")

  could be written as:

  document.getElementById("someId").getElementsByClassName("someClass")[0].getElementsByTagName("div")[0]

  Note the use of [0] to get just the first element of the collection at each step that returns a collection, resulting in one element at the end just like with querySelector.

• Since all elements have access to both querySelector* and getElement* calls, you can make chains using both calls, which can be useful if you want some performance gain, but cannot avoid a querySelector that can not be written in terms of the getElement* calls.

• Though it is generally easy to tell if a selector can be written using only getElement* calls, there is one case that may not be obvious:

  document.querySelectorAll(".class1.class2")

  can be rewritten as

  document.getElementsByClassName("class1 class2")

• Using getElement* on a static element fetched with querySelector* will result in an element that is live with respect to the static subset of the DOM copied by querySelector, but not live with respect to the full document DOM... this is where the simple live/static interpretation of elements begins to fall apart. You should probably avoid situations where you have to worry about this, but if you do, remember that querySelector* calls copy elements they find before returning references to them, but getElement* calls fetch direct references without copying.

• Neither API specifies which element should be selected first if there are multiple matches.

• Because querySelector* iterates through the DOM until it finds a match (see Main Difference #2), the above also implies that you cannot rely on the position of an element you are looking for in the DOM to guarantee that it is found quickly - the browser may iterate through the DOM backwards, forwards, depth first, breadth first, or otherwise. getElement* will still find elements in roughly the same amount of time regardless of their placement.

I use fetchObject() here a small example using Symfony 4.4

    <?php 
    use Doctrine\DBAL\Driver\Connection;

    class MyController{

    public function index($username){
      $queryBuilder = $connection->createQueryBuilder();
      $queryBuilder
        ->select('id', 'name')
        ->from('app_user')
        ->where('name = ?')
        ->setParameter(0, $username)
        ->setMaxResults(1);
      $stmUser = $queryBuilder->execute();

      dump($stmUser->fetchObject());

      //get_class_methods($stmUser) -> to see all methods
    }
  }

Response:

{ 
"id": "2", "name":"myuser"
}

At times, if we forget the

return self.cleaned_data 

in the clean function of django forms, we will not have any data though the form.is_valid() will return True.

I think may be you should try to convert the data to json format. It can be done by using gson lib. Try something like below.

I don't know it is a best solutions or not but you could do it this way.It worked for me

example : `

@GET
@Produces({ MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON })
public Response info(@HeaderParam("Accept") String accept) {
    Info information = new Info();
    information.setInfo("Calc Application Info");
    System.out.println(accept);
    if (!accept.equals(MediaType.APPLICATION_JSON)) {
        return Response.status(Status.ACCEPTED).entity(information).build();
    } else {
        Gson jsonConverter = new GsonBuilder().create();
        return Response.status(Status.ACCEPTED).entity(jsonConverter.toJson(information)).build();
    }
}

I can't actually contribute a real answer to this one (as I came here hoping to find one myself), but to me the number of differing approaches and all the caveats mentioned is the surest indicator that Python's os.path module desperately needs this as a built-in function.

I'm surprised nobody has mentioned the Yeoman generator angular-fullstack. It is the number one Yeoman community generator, with currently 1490 stars on the generator page vs Mean.js' 81 stars (admittedly not a fair comparison given how new MEANJS is). It is appears to be actively maintained and is in version 2.05 as I write this. Unlike MEANJS, it doesn't use Swig for templating. It can be scaffolded with passport built in.

Basically, the third parameter in loggedIn should not be an integer, it should be an object of some kind, but we can't know for sure because you did not name the parameters in the method call. Provide the method signature so we can see for sure. Perhaps it takes an NSNumber or something.

Since wdiff accepts args specifying the string at the beginning and end of both insertions and deletions, you can use ANSI color sequences as those strings:

wdiff -n -w $'\033[30;41m' -x $'\033[0m' -y $'\033[30;42m' -z $'\033[0m' file1 file2

For example, this is the output of comparing two CSV files:

Example from https://www.gnu.org/software/wdiff/manual/html_node/wdiff-Examples.html

I know this is old, but also make sure that none of your docker containers are already on port 80. That was my issue.

Use PDFiumViewer. I searched for a long time till I came up with a similar solution, then I found this clean piece of code that does not rely on sending raw files to the printer (which is bad if they get interpreted as text files..) or using Acrobat or Ghostscript as a helper (both would need to be installed, which is a hassle):

https://stackoverflow.com/a/41751184/586754

PDFiumViewer comes via nuget, the code example above is complete. Pass in null values for using the default printer.

addToCart(docId: string, prodId: string): Promise<void> {
    return this.baseAngularFirestore.collection('carts').doc(docId).update({
        products:
        firestore.FieldValue.arrayUnion({
            productId: prodId,
            qty: 1
        }),
    });
}

My case is same as @7guyo mentioned. I'm using lazyloading and was unconsiously doing this:

import { component1Route } from './path/component1.route';

export const entityState: Routes = [
{
   path: 'home',
   children: component1Route
}]

Instead of:

@NgModule({
imports: [
   RouterModule.forChild([
   {
     path: '',
     loadChildren: () => import('./component1/component1.module').then(m => m.ComponentOneModule)
  },
  {
    path: '',
    loadChildren: () => import('./component2/component2.module').then(m => m.ComponentTwoModule)
  }])
  ]})

  export class MainModule {}

The problem is that you mapped your servlet to /register.html and it expects POST method, because you implemented only doPost() method. So when you open register.html page, it will not open html page with the form but servlet that handles the form data.

Alternatively when you submit POST form to non-existing URL, web container will display 405 error (method not allowed) instead of 404 (not found).

To fix:

<servlet-mapping>
    <servlet-name>Register</servlet-name>
    <url-pattern>/Register</url-pattern>
</servlet-mapping>

If you need VBA, you could do something quick like this:

Sub Test()
    With ActiveSheet
    lastRow = .Cells(.Rows.Count, "A").End(xlUp).Row
    MsgBox lastRow
    End With
End Sub

This will print the number of the last row with data in it. Obviously don't need MsgBox in there if you're using it for some other purpose, but lastRow will become that value nonetheless.

Note that this approach is more biased and less efficient than a nextInt approach, https://stackoverflow.com/a/738651/360211

One standard pattern for accomplishing this is:

Min + (int)(Math.random() * ((Max - Min) + 1))

The Java Math library function Math.random() generates a double value in the range [0,1). Notice this range does not include the 1.

In order to get a specific range of values first, you need to multiply by the magnitude of the range of values you want covered.

Math.random() * ( Max - Min )

This returns a value in the range [0,Max-Min), where 'Max-Min' is not included.

For example, if you want [5,10), you need to cover five integer values so you use

Math.random() * 5

This would return a value in the range [0,5), where 5 is not included.

Now you need to shift this range up to the range that you are targeting. You do this by adding the Min value.

Min + (Math.random() * (Max - Min))

You now will get a value in the range [Min,Max). Following our example, that means [5,10):

5 + (Math.random() * (10 - 5))

But, this still doesn't include Max and you are getting a double value. In order to get the Max value included, you need to add 1 to your range parameter (Max - Min) and then truncate the decimal part by casting to an int. This is accomplished via:

Min + (int)(Math.random() * ((Max - Min) + 1))

And there you have it. A random integer value in the range [Min,Max], or per the example [5,10]:

5 + (int)(Math.random() * ((10 - 5) + 1))

Be aware that when you do press your <leader> key you have only 1000ms (by default) to enter the command following it.

This is exacerbated because there is no visual feedback (by default) that you have pressed your <leader> key and vim is awaiting the command; and so there is also no visual way to know when this time out has happened.

If you add set showcmd to your vimrc then you will see your <leader> key appear in the bottom right hand corner of vim (to the left of the cursor location) and perhaps more importantly you will see it disappear when the time out happens.

The length of the timeout can also be set in your vimrc, see :help timeoutlen for more information.

Your anchor tag should be:

  <a id="loginLink" onclick="showHideTable();" href="#">Login</a>

And You javascript function :

function showHideTable()
{
   if (document.getElementById("loginTable").style.display == "none" ) {
       document.getElementById("loginTable").style.display="";

   } else {
      document.getElementById("loginTable").style.display="none";

}

Your function is just fine but isn't working because you put the () after the last }. If you move the () to the top just next to new List<string>() the error stops.

Sample below:

List<string> optionList = new List<string>()
{
    "AdditionalCardPersonAdressType","AutomaticRaiseCreditLimit","CardDeliveryTimeWeekDay"
};

• Pointers are not booleans
• Modern C/C++ compilers emit a warning when you write if (foo = bar) by accident.

Therefore I prefer

if (foo == NULL)
{
    // null case
}
else
{
    // non null case
}

or

if (foo != NULL)
{
    // non null case
}
else
{
    // null case
}

However, if I were writing a set of style guidelines I would not be putting things like this in it, I would be putting things like:

Make sure you do a null check on the pointer.

I had this issue when my Java class name was similar to the Test class name. Just updated the name of the Test class by post fixing it with keywork "Test" and it started working

Before: Java class : ACMEController Test class : ACMEController

After: Java class : ACMEController Test class : ACMEControllerTest

Anyone has tried bleach.clean(html,tags=[],strip=True) with bleach? it's working for me.

When you are dealing with objects, you want to ignore simple id's as much as convenient.

If you change the click line to this, I think you will be well on your way:

<li class="tutorial_title {{tutorial.active}}" ng-click="loadFromMenu(tutorial)" ng-repeat="tutorial in section.tutorials">

Also, I think you may need to change

class="tutorial_title {{tutorial.active}}"

to something like

ng-class="tutorial_title {{tutorial.active}}"

See http://docs.angularjs.org/misc/faq and look for ng-class.

android:maxLines="1"
android:inputType="text"

Add the above code to have a single line in EditText tag in your layout.

android:singleLine="true" is deprecated

This constant was deprecated in API level 3.

This attribute is deprecated. Use maxLines instead to change the layout of a static text, and use the textMultiLine flag in the inputType attribute instead for editable text views (if both singleLine and inputType are supplied, the inputType flags will override the value of singleLine).

There are codes for other space characters, and the codes as such work well, but the characters themselves are legacy character. They have been included into character sets only due to their presence in existing character data, rather than for use in new documents. For some combinations of font and browser version, they may cause a generic glyph of unrepresentable character to be shown. For details, check my page about Unicode spaces.

So using CSS is safer and lets you specify any desired amount of spacing, not just the specific widths of fixed-width spaces. If you just want to have added spacing around your h2 elements, as it seems to me, then setting padding on those elements (changing the value of the padding: 0 settings that you already have) should work fine.

I have this problem sometimes with eclipse. What has corrected it for me is to go to Project Properties / Android and change the build target API to a different version and republish. I'll find that corrected it, then I can change it back to the desired build target.

or

You may need to check your proguard.cfg.

Assuming you have linked your libraries properly and that your library projects have the code you need marked for export, the next step you might want to do is to check your proguard settings and make sure you are not stripping out the classes you need.

I was struggling with this quite a bit after I had my app working going directly to the emulator or device from eclipse. The problem I was having was after the app was published (i.e. gone through proguard) and run on the device it was missing classes that were contained in the project. They were being stripped out somehow.

My problem may have been caused when I had tried to use IntelliJ and have switched back to eclipse.

Here is the proguard file that worked for me:

-optimizationpasses 5
-dontusemixedcaseclassnames
-dontskipnonpubliclibraryclasses
-dontpreverify
-verbose
-optimizations !code/simplification/arithmetic,!field/*,!class/merging/*

-keep public class * extends android.app.Activity
-keep public class * extends android.app.Application
-keep public class * extends android.app.Service
-keep public class * extends android.content.BroadcastReceiver
-keep public class * extends android.content.ContentProvider
-keep public class * extends android.app.backup.BackupAgentHelper
-keep public class * extends android.preference.Preference
-keep public class com.android.vending.licensing.ILicensingService

-keepclasseswithmembers class * {
    native <methods>;
}

-keepclasseswithmembers class * {
    public <init>(android.content.Context, android.util.AttributeSet);
}

-keepclasseswithmembers class * {
    public <init>(android.content.Context, android.util.AttributeSet, int);
}

-keepclassmembers enum * {
    public static **[] values();
    public static ** valueOf(java.lang.String);
}

-keep class * implements android.os.Parcelable {
  public static final android.os.Parcelable$Creator *;
}

    WebElement button = driver.findElement(By.xpath("//button[@type='submit']"));
    int height = button.getSize().getHeight();
    int width = button.getSize().getWidth();
    Actions act = new Actions(driver);
    act.moveToElement(button).moveByOffset((width/2)+2,(height/2)+2).click();

HTML 5 Code Sample

<button href="#" ng-click="shoutOut()" confirmation-needed="Do you really want to
shout?">Click!</button>

AngularJs Custom Directive code-sample

var app = angular.module('mobileApp', ['ngGrid']);
app.directive('confirmationNeeded', function () {
    return {
    link: function (scope, element, attr) {
      var msg = attr.confirmationNeeded || "Are you sure?";
      var clickAction = attr.ngClick;
      element.bind('click',function (e) {
        scope.$eval(clickAction) if window.confirm(msg)
        e.stopImmediatePropagation();
        e.preventDefault();
       });
     }
    };
});

curlPost('google.com', [
    'username' => 'admin',
    'password' => '12345',
]);


function curlPost($url, $data) {
    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
    $response = curl_exec($ch);
    $error = curl_error($ch);
    curl_close($ch);
    if ($error !== '') {
        throw new \Exception($error);
    }

    return $response;
}

Use the gcc compiler. This assumes that you have the developer tools installed.

This may help you as well. This is a conditional statement that will fill the cell with a default date if it is empty but will subtract one hour if it is a valid date/time and put it into the cell.

=IF((Sheet1!C4)="",DATE(1999,1,1),Sheet1!C4-TIME(1,0,0))

You can also substitute TIME with DATE to add or subtract a date or time.

Hyper Text Transfer Protocol (HTTP) is a protocol used for transferring web pages (like the one you're reading right now). A protocol is really nothing but a standard way of doing things. If you were to meet the President of the United States, or the king of a country, there would be specific procedures that you'd have to follow. You couldn't just walk up and say "hey dude". There would be a specific way to walk, to talk, a standard greeting, and a standard way to end the conversation. Protocols in the TCP/IP stack serve the same purpose.

The TCP/IP stack has four layers: Application, Transport, Internet, and Network. At each layer there are different protocols that are used to standardize the flow of information, and each one is a computer program (running on your computer) that's used to format the information into a packet as it's moving down the TCP/IP stack. A packet is a combination of the Application Layer data, the Transport Layer header (TCP or UDP), and the IP layer header (the Network Layer takes the packet and turns it into a frame).

The Application Layer

...consists of all applications that use the network to transfer data. It does not care about how the data gets between two points and it knows very little about the status of the network. Applications pass data to the next layer in the TCP/IP stack and then continue to perform other functions until a reply is received. The Application Layer uses host names (like www.dalantech.com) for addressing. Examples of application layer protocols: Hyper Text Transfer Protocol (HTTP -web browsing), Simple Mail Transfer Protocol (SMTP -electronic mail), Domain Name Services (DNS -resolving a host name to an IP address), to name just a few.

The main purpose of the Application Layer is to provide a common command language and syntax between applications that are running on different operating systems -kind of like an interpreter. The data that is sent by an application that uses the network is formatted to conform to one of several set standards. The receiving computer can understand the data that is being sent even if it is running a different operating system than the sender due to the standards that all network applications conform to.

The Transport Layer

...is responsible for assigning source and destination port numbers to applications. Port numbers are used by the Transport Layer for addressing and they range from 1 to 65,535. Port numbers from 0 to 1023 are called "well known ports". The numbers below 256 are reserved for public (standard) services that run at the Application Layer. Here are a few: 25 for SMTP, 53 for DNS (udp for domain resolution and tcp for zone transfers) , and 80 for HTTP. The port numbers from 256 to 1023 are assigned by the IANA to companies for the applications that they sell.

Port numbers from 1024 to 65,535 are used for client side applications -the web browser you are using to read this page, for example. Windows will only assign port numbers up to 5000 -more than enough port numbers for a Windows based PC. Each application has a unique port number assigned to it by the transport layer so that as data is received by the Transport Layer it knows which application to give the data to. An example is when you have more than one browser window running. Each window is a separate instance of the program that you use to surf the web, and each one has a different port number assigned to it so you can go to www.dalantech.com in one browser window and this site does not load into another browser window. Applications like FireFox that use tabbed windows simply have a unique port number assigned to each tab

The Internet Layer

...is the "glue" that holds networking together. It permits the sending, receiving, and routing of data.

The Network Layer

...consists of your Network Interface Card (NIC) and the cable connected to it. It is the physical medium that is used to transmit and receive data. The Network Layer uses Media Access Control (MAC) addresses, discussed earlier, for addressing. The MAC address is fixed at the time an interface was manufactured and cannot be changed. There are a few exceptions, like DSL routers that allow you to clone the MAC address of the NIC in your PC.

For more info:

• Protocols
• TCP/IP

What could the reason be

A query cancel is immediate, provided that your attention can reach the server and be processed. A query must be in a cancelable state, which is almost always true except if you do certain operations like calling a web service from SQLCLR. If your attention cannot reach the server it's usually due to scheduler overload.

But if your query is part of a transaction that must rollback, then rollback cannot be interrupted. If it takes 10 minutes then it needs 10 minutes and there's nothing you can do about it. Even restarting the server will not help, it will only make startup longer since recovery must finish the rollback.

To answer which specific reason applies to your case, you'll need to investigate yourself.

Being unhappy with the available solution, I adopted nu774's script to add security and make it easier to setup and use. The project is available on Github

To use it, just download cygwin-sudo.py and run it via python3 cygwin-sudo.py **yourcommand**.

You can set up an alias for convenience:

alias sudo="python3 /path-to-cygwin-sudo/cygwin-sudo.py"

Pretty much. One small difference though: if the Task fails, GetResult() will just throw the exception caused directly, while Task.Result will throw an AggregateException. However, what's the point of using either of those when it's async? The 100x better option is to use await.

Also, you're not meant to use GetResult(). It's meant to be for compiler use only, not for you. But if you don't want the annoying AggregateException, use it.

here's a solution using a stack. No recursion.

def flatten_nested_dict(nested):
    stack = list(nested.items())
    ans = {}
    while stack:
        key, val = stack.pop()
        if isinstance(val, dict):
            for sub_key, sub_val in val.items():
                stack.append((f"{key}_{sub_key}", sub_val))
        else:
            ans[key] = val
    return ans

The results are ordered by the first column, then the second, and so on for as many columns as the ORDER BY clause includes. If you want any results sorted in descending order, your ORDER BY clause must use the DESC keyword directly after the name or the number of the relevant column.

Check out this Example

SELECT first_name, last_name, hire_date, salary 
FROM employee 
ORDER BY hire_date DESC,last_name ASC;

It will order in succession. Order the Hire_Date first, then LAST_NAME it by Hire_Date .

A portable and reliable solution is to use python, which is preinstalled pretty much everywhere (including Darwin). You have two options:

1. abspath returns an absolute path but does not resolve symlinks:

   python -c "import os,sys; print(os.path.abspath(sys.argv[1]))" path/to/file

2. realpath returns an absolute path and in doing so resolves symlinks, generating a canonical path:

   python -c "import os,sys; print(os.path.realpath(sys.argv[1]))" path/to/file

In each case, path/to/file can be either a relative or absolute path.

This is a very old question - but still for reference if others are looking at it - requestAnimationFrame() is the right way to handle animation in modern browsers:

UPDATE: The mozilla link shows how to do this - I didn't feel like repeating the text behind the link ;)

MYSQL IS NOT NULL WITH JOINS AND SELECT, INSERT INTO, DELETE & LOGICAL OPERATOR LIKE OR , NOT

Using IS NOT NULL On Join Conditions

 SELECT * FROM users 
 LEFT JOIN posts ON post.user_id = users.id 
 WHERE user_id IS NOT NULL;

 Using IS NOT NULL With AND Logical Operator

 SELECT * FROM users 
 WHERE email_address IS NOT NULL 
 AND mobile_number IS NOT NULL;

Using IS NOT NULL With OR Logical Operator

 SELECT * FROM users 
 WHERE email_address IS NOT NULL 
 OR mobile_number IS NOT NULL;

I would prefer to do this by return. Put the looping part in private function and return when you want to break the loop.

Typically on Debian systems you have different PHP configuration for CLI and for PHP running as say an Apache module. Your phpinfo page may very well show simplexml as being enabled via web server, while it is not enabled via CLI.

A couple of code examples in C# using SelectNextControl.

The first moves to the next control when ENTER is pressed.

    private void Control_KeyUp( object sender, KeyEventArgs e )
    {
        if( (e.KeyCode == Keys.Enter) || (e.KeyCode == Keys.Return) )
        {
            this.SelectNextControl( (Control)sender, true, true, true, true );
        }
    }

The second uses the UP and DOWN arrows to move through the controls.

    private void Control_KeyUp( object sender, KeyEventArgs e )
    {
        if( e.KeyCode == Keys.Up )
        {
            this.SelectNextControl( (Control)sender, false, true, true, true );
        }
        else if( e.KeyCode == Keys.Down )
        {
            this.SelectNextControl( (Control)sender, true, true, true, true );
        }
    }

See MSDN SelectNextControl Method

From the docs:

Note: When actions are enclosed in tasks (such as FutureTask) either explicitly or via methods such as submit, these task objects catch and maintain computational exceptions, and so they do not cause abrupt termination, and the internal exceptions are not passed to this method.

When you submit a Runnable, it'll get wrapped in a Future.

Your afterExecute should be something like this:

public final class ExtendedExecutor extends ThreadPoolExecutor {

    // ...

    protected void afterExecute(Runnable r, Throwable t) {
        super.afterExecute(r, t);
        if (t == null && r instanceof Future<?>) {
            try {
                Future<?> future = (Future<?>) r;
                if (future.isDone()) {
                    future.get();
                }
            } catch (CancellationException ce) {
                t = ce;
            } catch (ExecutionException ee) {
                t = ee.getCause();
            } catch (InterruptedException ie) {
                Thread.currentThread().interrupt();
            }
        }
        if (t != null) {
            System.out.println(t);
        }
    }
}

Try this definitely work.

SELECT p.PersonID AS person_id,
   p.Name, p.SS, 
   f.FearID AS fear_id,
   f.Fear 
   FROM person_fear AS pf 
      LEFT JOIN persons AS p ON pf.PersonID = p.PersonID 
      LEFT JOIN fears AS f ON pf.PersonID = f.FearID 
   WHERE f.FearID = pf.FearID AND p.PersonID = pf.PersonID

You can do either…

$qb->where('e.fecha BETWEEN :monday AND :sunday')
   ->setParameter('monday', $monday->format('Y-m-d'))
   ->setParameter('sunday', $sunday->format('Y-m-d'));

or…

$qb->where('e.fecha > :monday')
   ->andWhere('e.fecha < :sunday')
   ->setParameter('monday', $monday->format('Y-m-d'))
   ->setParameter('sunday', $sunday->format('Y-m-d'));

With Java 7, it's as simple as:

final String EoL = System.getProperty("line.separator");
List<String> lines = Files.readAllLines(Paths.get(fileName),
        Charset.defaultCharset());

StringBuilder sb = new StringBuilder();
for (String line : lines) {
    sb.append(line).append(EoL);
}
final String content = sb.toString();

However, it does havea few minor caveats (like handling files that does not fit into the memory).

I would suggest taking a look on corresponding section in the official Java tutorial (that's also the case if you have a prior Java).

As others pointed out, you might find sime 3rd party libraries useful (like Apache commons I/O or Guava).

One option is to type [command] + [shift] + [p] (or the equivalent) and then type 'indentation'. The top result should be 'Indendtation: Reindent Lines'. Press [enter] and it will format the document.

Another option is to install the Emmet plugin (http://emmet.io/), which will provide not only better formatting, but also a myriad of other incredible features. To get the output you're looking for using Sublime Text 3 with the Emmet plugin requires just the following:

p [tab][enter] Hello world!

When you type p [tab] Emmet expands it to:

<p></p>

Pressing [enter] then further expands it to:

<p>

</p>

With the cursor indented and on the line between the tags. Meaning that typing text results in:

<p>
    Hello, world!
</p>

I find Jack Aidley's suggested answer a useful one.

I wanted to throw out another option. Suppose you have a series with many small numbers, and you want to ensure the axis labels write out the full decimal point (e.g. 5e-05 -> 0.0005), then:

NotFancy <- function(l) {
 l <- format(l, scientific = FALSE)
 parse(text=l)
}

ggplot(data = data.frame(x = 1:100, 
                         y = seq(from=0.00005,to = 0.0000000000001,length.out=100) + runif(n=100,-0.0000005,0.0000005)), 
       aes(x=x, y=y)) +
     geom_point() +
     scale_y_continuous(labels=NotFancy) 

If you are using Jquery 1.6 or above, use prop to access the value.

$(document).prop('scrollHeight')

Previous versions used to get the value from attr but not post 1.6.

Here is the solution for your query.

a=["first","middle","last"] # A sample list
print(a[0]) #prints the first item in the list because the index of the list always starts from 0.
print(a[-1]) #prints the last item in the list.
print(a[-2]) #prints the last second item in the list.

Output:

>>> first
>>> last
>>> middle

You could do this with a list comprehension

l = [x for i in range(10)];

You have to create a separate volume for mysql data.

So it will look like this:

volumes_from:
  - data
volumes:
  - ./mysql-data:/var/lib/mysql

And no, /var/lib/mysql is a path inside your mysql container and has nothing to do with a path on your host machine. Your host machine may even have no mysql at all. So the goal is to persist an internal folder from a mysql container.

Here you can find another tool (including source code) to remove both SCC footprint from the solution and project files and the .vssscc and .vspscc files. In addition, it removes the output and other configurable directories.

Hth

Stefan

like this:

/\<word\>

\< means beginning of a word, and \> means the end of a word,

Adding @Roe's comment:
VIM provides a shortcut for this. If you already have word on screen and you want to find other instances of it, you can put the cursor on the word and press '*' to search forward in the file or '#' to search backwards.

Since you've included the C++ tag, you could use the {fmt} library and avoid the PRIu64 macro and other printf issues altogether:

#include <fmt/core.h>

int main() {
  uint64_t ui64 = 90;
  fmt::print("test uint64_t : {}\n", ui64);
}

The formatting facility based on this library is proposed for standardization in C++20: P0645.

Disclaimer: I'm the author of {fmt}.

Both @Autowired (or @Inject) and @Resource work equally well. But there is a conceptual difference or a difference in the meaning

• @Resource means get me a known resource by name. The name is extracted from the name of the annotated setter or field, or it is taken from the name-Parameter.
• @Inject or @Autowired try to wire in a suitable other component by type.

So, basically these are two quite distinct concepts. Unfortunately the Spring-Implementation of @Resource has a built-in fallback, which kicks in when resolution by-name fails. In this case, it falls back to the @Autowired-kind resolution by-type. While this fallback is convenient, IMHO it causes a lot of confusion, because people are unaware of the conceptual difference and tend to use @Resource for type-based autowiring.

'M' (Capital) represent month & 'm' (Simple) represent minutes

Some example for months

'M' -> 7  (without prefix 0 if it is single digit)
'M' -> 12

'MM' -> 07 (with prefix 0 if it is single digit)
'MM' -> 12

'MMM' -> Jul (display with 3 character)

'MMMM' -> December (display with full name)

Some example for minutes

'm' -> 3  (without prefix 0 if it is single digit)
'm' -> 19
'mm' -> 03 (with prefix 0 if it is single digit)
'mm' -> 19

Open up a command terminal (CTRL+ALT+T) and try running this command:

anaconda-navigator

When I installed Anaconda, and read the website docs, they said that they tend to not add a file or menu path to run the navigator because there are so many different versions of different systems, instead they give the above terminal command to start the navigator GUI and advise on setting up a shortcut to do this process manually - if that works for you it shouldn't be too much trouble to do it this way - I do it like this personally

Have a look at py-multicast. Network module can check if an interface supports multicast (on Linux at least).

import multicast
from multicast import network

receiver = multicast.MulticastUDPReceiver ("eth0", "238.0.0.1", 1234 )
data = receiver.read()
receiver.close()

config = network.ifconfig()
print config['eth0'].addresses
# ['10.0.0.1']
print config['eth0'].multicast
#True - eth0 supports multicast
print config['eth0'].up
#True - eth0 is up

Perhaps problems with not seeing IGMP, were caused by an interface not supporting multicast?

Follow this method. Using this way you can simply update the UI from a background thread. runOnUiThread work on the main(UI) thread . I think this code snippet is less complex and easy, especially for beginners.

AsyncTask.execute(new Runnable() {
            @Override
            public void run() {

            //code you want to run on the background
            someCode();

           //the code you want to run on main thread
 MainActivity.this.runOnUiThread(new Runnable() {

                    public void run() {

/*the code you want to run after the background operation otherwise they will executed earlier and give you an error*/
                        executeAfterOperation();

                   }
                });
            }
        });

in the case of a service

create a handler in the oncreate

 handler = new Handler();

then use it like this

 private void runOnUiThread(Runnable runnable) {
        handler.post(runnable);
    }

You can first insert data into blob field and then copy to text field with the folloing function

CREATE OR REPLACE FUNCTION blob2text() RETURNS void AS $$
Declare
    ref record;
    i integer;
Begin
    FOR ref IN SELECT id, blob_field FROM table LOOP

          --  find 0x00 and replace with space    
      i := position(E'\\000'::bytea in ref.blob_field);
      WHILE i > 0 LOOP
        ref.bob_field := set_byte(ref.blob_field, i-1, 20);
        i := position(E'\\000'::bytea in ref.blobl_field);
      END LOOP

    UPDATE table SET field = encode(ref.blob_field, 'escape') WHERE id = ref.id;
    END LOOP;

End; $$ LANGUAGE plpgsql; 

--

SELECT blob2text();

set JAVA_OPTS=-XX:+IgnoreUnrecognizedVMOptions --add-modules java.se.ee

This fixed the problem on Windows for me.

Source 1, source 2

iPhoney is designed specifically for Mac users

you can read about it and download it here

To retrieve it:

cat /proc/sys/kernel/threads-max

To set it:

echo 123456789 | sudo tee -a /proc/sys/kernel/threads-max

123456789 = # of threads

A more generic solution:

1. Edit .gitignore file.

   echo mylogfile.log >> .gitignore

2. Remove all items from index.

   git rm -r -f --cached .

3. Rebuild index.

   git add .

4. Make new commit

   git commit -m "Removed mylogfile.log"

AngularJS' orderBy filter does just support arrays - no objects. So you have to write an own small filter, which does the sorting for you.

Or change the format of data you handle with (if you have influence on that). An array containing objects is sortable by native orderBy filter.

Here is my orderObjectBy filter for AngularJS:

app.filter('orderObjectBy', function(){
 return function(input, attribute) {
    if (!angular.isObject(input)) return input;

    var array = [];
    for(var objectKey in input) {
        array.push(input[objectKey]);
    }

    array.sort(function(a, b){
        a = parseInt(a[attribute]);
        b = parseInt(b[attribute]);
        return a - b;
    });
    return array;
 }
});

Usage in your view:

<div class="item" ng-repeat="item in items | orderObjectBy:'position'">
    //...
</div>

The object needs in this example a position attribute, but you have the flexibility to use any attribute in objects (containing an integer), just by definition in view.

Example JSON:

{
    "123": {"name": "Test B", "position": "2"},
    "456": {"name": "Test A", "position": "1"}
}

Here is a fiddle which shows you the usage: http://jsfiddle.net/4tkj8/1/

This is a somewhat easy task for PowerShell, complicated by the fact that the standard Get-Content cmdlet doesn't handle very large files too well. What I would suggest to do is use the .NET StreamReader class to read the file line by line in your PowerShell script and use the Add-Content cmdlet to write each line to a file with an ever-increasing index in the filename. Something like this:

$upperBound = 50MB # calculated by Powershell
$ext = "log"
$rootName = "log_"

$reader = new-object System.IO.StreamReader("C:\Exceptions.log")
$count = 1
$fileName = "{0}{1}.{2}" -f ($rootName, $count, $ext)
while(($line = $reader.ReadLine()) -ne $null)
{
    Add-Content -path $fileName -value $line
    if((Get-ChildItem -path $fileName).Length -ge $upperBound)
    {
        ++$count
        $fileName = "{0}{1}.{2}" -f ($rootName, $count, $ext)
    }
}

$reader.Close()

Try to run your server with the --insecure just like this:

python manage.py runserver --insecure

This can be achieved assigning weight to every button added inside the container, very important to define horizontal orientation :

    int buttons = 5;

    RadioGroup rgp = (RadioGroup) findViewById(R.id.radio_group);

    rgp.setOrientation(LinearLayout.HORIZONTAL);

    for (int i = 1; i <= buttons; i++) {
        RadioButton rbn = new RadioButton(this);         
        rbn.setId(1 + 1000);
        rbn.setText("RadioButton" + i);
        //Adding weight
        LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT, 1f);
        rbn.setLayoutParams(params);
        rgp.addView(rbn);
    }

so we can get this in our device as a result:

even if we rotate our device the weight defined in each button can distribuite the elemenents uniformally along the container:

Try this first, you may be passing a Null Model:

@if (Model != null && !String.IsNullOrEmpty(Model.ImageName))
{
    <label for="Image">Change picture</label>
}
else
{ 
    <label for="Image">Add picture</label>
}

Otherise, you can make it even neater with some ternary fun! - but that will still error if your model is Null.

<label for="Image">@(String.IsNullOrEmpty(Model.ImageName) ? "Add" : "Change") picture</label>

item = objects.Find(obj => obj.property==myValue);

Try:

name = "^aH^ai"
name = name:gsub("%^a", "")

See also: http://lua-users.org/wiki/StringLibraryTutorial

All of them seemed good candidates:

/etc/my.cnf
/etc/mysql/my.cnf
/var/lib/mysql/my.cnf
...

in many cases you could simply check system process list using ps:

server ~ # ps ax | grep '[m]ysqld'

Output

10801 ?        Ssl    0:27 /usr/sbin/mysqld --defaults-file=/etc/mysql/my.cnf --basedir=/usr --datadir=/var/lib/mysql --pid-file=/var/run/mysqld/mysqld.pid --socket=/var/run/mysqld/mysqld.sock

Or

which mysqld
/usr/sbin/mysqld

Then

/usr/sbin/mysqld --verbose --help | grep -A 1 "Default options"

/etc/mysql/my.cnf ~/.my.cnf /usr/etc/my.cnf

I didn't know about the join function - Nice! I had written a function that I placed in the code section (report properties->code tab:

Public Function ShowParmValues(ByVal parm as Parameter) as string
   Dim s as String 

      For i as integer = 0 to parm.Count-1
         s &= CStr(parm.value(i)) & IIF( i < parm.Count-1, ", ","")
      Next
  Return s
End Function  

With Apache 2.2

Order Deny,Allow
Allow from all

With Apache 2.4

Require all granted

From http://httpd.apache.org/docs/2.4/en/upgrading.html

For anyone stumbling across this question that is not on a Mac: assuming you know that your server is running on port 3000, you can do this in one shot by executing the following:

fuser -k 3000/tcp

But as Toby has mentioned, the implementation of fuser in Mac OS is rather primitive and this command will not work on mac.

If Age and Palt are columns in the same Table, you can count(*) all tasks and sum only late ones like this:

select ks,
       count(*) tasks,
       sum(case when Age > Palt then 1 end) late
  from Table
 group by ks

Reading collection with customers and saving to file, with JFilechooser.

private void writeFile(){

    JFileChooser fileChooser = new JFileChooser(this.PATH);
    int retValue = fileChooser.showDialog(this, "Save File");

    if (retValue == JFileChooser.APPROVE_OPTION){

        try (Writer fileWrite = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(fileChooser.getSelectedFile())))){

            this.customers.forEach((c) ->{
                try{
                    fileWrite.append(c.toString()).append("\n");
                }
                catch (IOException ex){
                    ex.printStackTrace();
                }
            });
        }
        catch (IOException e){
            e.printStackTrace();
        }
    }
}

I tested dkarp's solution with gmail and it was filtered to spam. Use the Reply-To header instead (or in addition, although gmail apparently doesn't need it). Here's how linkedin does it:

Sender: [email protected]
From: John Doe via LinkedIn <[email protected]>
Reply-To: John Doe <[email protected]>
To: My Name <[email protected]>

Once I switched to this format, gmail is no longer filtering my messages as spam.

For future poeple who have the same problem: Try to add server tab from eclipse menu, if it doesnt work, then go do @Tomasz Bartnik solution above, and retry the following again:

1. Go to WIndow > Show view > Other

   

2. search for servers, select it and press OK

   

It will then be added to your tabs

This message can also happen if git-lfs is used and a file pointer was overwritten by a real file.

then you use:

git stash
git lfs migrate import
git pull

full output from my case

? git stash
Saved working directory and index state WIP on master: 5d4ad47 Merge branch 'feature/...' into 'master'
Encountered 1 file(s) that should have been pointers, but weren't:
        public/apple-touch-icon.png

? git pull
Updating 5a4ad44..b25f79d
error: Your local changes to the following files would be overwritten by merge:
        public/apple-touch-icon.png
Please commit your changes or stash them before you merge.
Aborting

? git lfs migrate import
migrate: Fetching remote refs: ..., done
migrate: Sorting commits: ..., done
migrate: Rewriting commits: 100% (0/0), done
migrate: Updating refs: ..., done
migrate: checkout: ..., done


? git pull
Updating 5d4ad47..a25c79a
Fast-forward
 public/apple-touch-icon.png | Bin 2092 -> 130 bytes
 public/favicon.ico          | Bin 6518 -> 1150 bytes
 2 files changed, 0 insertions(+), 0 deletions(-)

see https://github.com/git-lfs/git-lfs/issues/2839

Try this,

select to_char(sysdate,'dd') from dual; -> 08 (date)
select to_char(sysdate,'mm') from dual; -> 02 (month in number)
select to_char(sysdate,'yyyy') from dual; -> 2013 (Full year)

This error getting because of the compiler not getting 'Context' class in your application. So, you can add it manually by Add --> Class and inherit it with 'DbContext' Class For Example :

public class MyDbContext : DbContext
    {
        public DbSet<Customer> Customer { get; set; }
        public MyDbContext()
        {
        }
    }

For ng9 upgraders:

npm i -g core-js@^3

..then:

npm cache clean -f

..followed by:

npm i

You can use it without doing anything special. If you have a local image called blah you can do FROM blah. If you do FROM blah in your Dockerfile, but don't have a local image called blah, then Docker will try to pull it from the registry.

In other words, if a Dockerfile does FROM ubuntu, but you have a local image called ubuntu different from the official one, your image will override it.

Structure vs Class

A structure is a value type so it is stored on the stack, but a class is a reference type and is stored on the heap.

A structure doesn't support inheritance, and polymorphism, but a class supports both.

By default, all the struct members are public but class members are by default private in nature.

As a structure is a value type, we can't assign null to a struct object, but it is not the case for a class.

You can submit form by just clicking on checkbox by simple method in JavaScript. Inside form tag or Input attribute add following attribute:

    onchange="this.form.submit()"

Example:

<form>
      <div>
           <input type="checkbox">
      </div>
</form>

Chinese Remainder Theorem comes to mind as an initial point as 221 = 13 * 17. So, break this down into 2 parts that get combined in the end, one for mod 13 and one for mod 17. Second, I believe there is some proof of a^(p-1) = 1 mod p for all non zero a which also helps reduce your problem as 5^55 becomes 5^3 for the mod 13 case as 13*4=52. If you look under the subject of "Finite Fields" you may find some good results on how to solve this.

EDIT: The reason I mention the factors is that this creates a way to factor zero into non-zero elements as if you tried something like 13^2 * 17^4 mod 221, the answer is zero since 13*17=221. A lot of large numbers aren't going to be prime, though there are ways to find large primes as they are used a lot in cryptography and other areas within Mathematics.

use

=VLOOKUP(D4,F4:G9,2)

with the range F4:G9:

0   0.1
1   0.15
5   0.2
15  0.3
30  1
100 1.3

and D4 being the value in question, e.g. 18.75 -> result: 0.3

The octothorpe/number-sign/hashmark has a special significance in an URL, it normally identifies the name of a section of a document. The precise term is that the text following the hash is the anchor portion of an URL. If you use Wikipedia, you will see that most pages have a table of contents and you can jump to sections within the document with an anchor, such as:

https://en.wikipedia.org/wiki/Alan_Turing#Early_computers_and_the_Turing_test

https://en.wikipedia.org/wiki/Alan_Turing identifies the page and Early_computers_and_the_Turing_test is the anchor. The reason that Facebook and other Javascript-driven applications (like my own Wood & Stones) use anchors is that they want to make pages bookmarkable (as suggested by a comment on that answer) or support the back button without reloading the entire page from the server.

In order to support bookmarking and the back button, you need to change the URL. However, if you change the page portion (with something like window.location = 'http://raganwald.com';) to a different URL or without specifying an anchor, the browser will load the entire page from the URL. Try this in Firebug or Safari's Javascript console. Load http://minimal-github.gilesb.com/raganwald. Now in the Javascript console, type:

window.location = 'http://minimal-github.gilesb.com/raganwald';

You will see the page refresh from the server. Now type:

window.location = 'http://minimal-github.gilesb.com/raganwald#try_this';

Aha! No page refresh! Type:

window.location = 'http://minimal-github.gilesb.com/raganwald#and_this';

Still no refresh. Use the back button to see that these URLs are in the browser history. The browser notices that we are on the same page but just changing the anchor, so it doesn't reload. Thanks to this behaviour, we can have a single Javascript application that appears to the browser to be on one 'page' but to have many bookmarkable sections that respect the back button. The application must change the anchor when a user enters different 'states', and likewise if a user uses the back button or a bookmark or a link to load the application with an anchor included, the application must restore the appropriate state.

So there you have it: Anchors provide Javascript programmers with a mechanism for making bookmarkable, indexable, and back-button-friendly applications. This technique has a name: It is a Single Page Interface.

p.s. There is a fourth benefit to this technique: Loading page content through AJAX and then injecting it into the current DOM can be much faster than loading a new page. In addition to the speed increase, further tricks like loading certain portions in the background can be performed under the programmer's control.

p.p.s. Given all of that, the 'bang' or exclamation mark is a further hint to Google's web crawler that the exact same page can be loaded from the server at a slightly different URL. See Ajax Crawling. Another technique is to make each link point to a server-accessible URL and then use unobtrusive Javascript to change it into an SPI with an anchor.

Here's the key link again: The Single Page Interface Manifesto

I realise this may have been answered before. However, i had this issue this morning with Environment.Newline not being preserved in the email body. The following is a full (Now Working with Environment.NewLine being preserved) method i use for sending an email through my program.(The Modules.MessageUpdate portion can be skipped as this just writes to a log file i have.) This is located on the main page of my WinForms program.

    private void MasterMail(string MailContents)
    {
        Modules.MessageUpdate(this, ObjApp, EH, 3, 25, "", "", "", 0, 0, 0, 0, "Master Email - MasterMail Called.", "N", MainTxtDict, MessageResourcesTxtDict);

        Outlook.Application OApp = new Outlook.Application();
        //Location of email template to use. Outlook wont include my Signature through this automation so template contains only that.
        string Temp = Environment.GetFolderPath(Environment.SpecialFolder.Desktop) + ResourceDetails.DictionaryResources("SigTempEmail", MainTxtDict);

        Outlook.Folder folder = OApp.Session.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderDrafts) as Outlook.Folder;

        //create the email object.
        Outlook.MailItem TestEmail = OApp.CreateItemFromTemplate(Temp, folder) as Outlook.MailItem;

        //Set subject line.
        TestEmail.Subject = "Automation Results";

        //Create Recipients object.
        Outlook.Recipients oRecips = (Outlook.Recipients)TestEmail.Recipients;

        //Set and check email addresses to send to.
        Outlook.Recipient oRecip = (Outlook.Recipient)oRecips.Add("EmailAddressToSendTo");
        oRecip.Resolve();

        //Set the body of the email. (.HTMLBody for HTML Emails. .Body will preserve "Environment.NewLine")
        TestEmail.Body = MailContents + TestEmail.Body;
        try
        {
            //If outlook is not open, Open it.
            Process[] pName = Process.GetProcessesByName("OUTLOOK.EXE");
            if (pName.Length == 0)
            {
                System.Diagnostics.Process.Start(@"C:\Program Files\Microsoft Office\root\Office16\OUTLOOK.EXE");
            }

            //Send email
            TestEmail.Send();

            //Update logfile - Success.
            Modules.MessageUpdate(this, ObjApp, EH, 1, 17, "", "", "", 0, 0, 0, 0, "Master Email sent.", "Y", MainTxtDict, MessageResourcesTxtDict);
        }
        catch (Exception E)
        {
            //Update LogFile - Fail.
            Modules.MessageUpdate(this, ObjApp, EH, 5, 4, "", "", "", 0, 0, 0, 0, "Master Email - Error Occurred. System says: " + E.Message, "Y", MainTxtDict, MessageResourcesTxtDict);
        }
        finally
        {
            if (OApp != null)
            {
                OApp = null;
            }
            if (folder != null)
            {
                folder = null;
            }
            if (TestEmail != null)
            {
                TestEmail = null;
            }
            GC.Collect();
            GC.WaitForPendingFinalizers();
        }
    }

You can add multiple recipients by either including a "; " between email addresses manually, or in one of my other methods i populate from a Txt file into a dictionary and use that to create the recipients email addresses using the following snippet.

        foreach (KeyValuePair<string, string> kvp in EmailDict)
        {
            Outlook.Recipient oRecip = (Outlook.Recipient)oRecips.Add(kvp.Value);
            RecipientList += string.Format("{0}; ", kvp.Value);
            oRecip.Resolve();
        }

I hope at least some of this helps someone.

The easiest way to debug python - especially for programmers that are used to Visual Studio - is using PTVS (Python Tools for Visual Studio). The steps are simple:

1. Download and install it from http://pytools.codeplex.com/
2. Set breakpoints and press F5.
3. Your breakpoint is hit, you can view/change the variables as easy as debugging C#/C++ programs.
4. That's all :)

If you want to debug Django using PTVS, you need to do the following:

1. In Project settings - General tab, set "Startup File" to "manage.py", the entry point of the Django program.
2. In Project settings - Debug tab, set "Script Arguments" to "runserver --noreload". The key point is the "--noreload" here. If you don't set it, your breakpoints won't be hit.
3. Enjoy it.

You probably want to have LI rather than the UL have the background-color:

.selected li {
  background-color: red;
}

Then you want to have a dynamic class for the UL:

<ul ng-repeat="vote in votes" ng-click="setSelected()" class="{{selected}}">

Now you need to update the $scope.selected when clicking the row:

$scope.setSelected = function() {
   console.log("show", arguments, this);
   this.selected = 'selected';
}

and then un-select the previously highlighted row:

$scope.setSelected = function() {
   // console.log("show", arguments, this);
   if ($scope.lastSelected) {
     $scope.lastSelected.selected = '';
   }
   this.selected = 'selected';
   $scope.lastSelected = this;
}

Working solution:

http://plnkr.co/edit/wq6nxc?p=preview

Something that sometimes crops up you may/maynot be aware of

Won't always be picked up by by $_POST['delete'] when using IE. Firefox and chrome should work fine though. I use a seperate isntead which solves the problem for IE

As for your not deleting in your code above you appear to be echoing out 2x sets of check boxes both pulling the same data? Is this just a copy + paste mistake or is this actually how your code is?

If its how your code is that'll be the problem as the user could be ticking one checkbox array item but the other one will be unchecked so the php code for delete is getting confused. Either rename the 2nd check box or delete that block of html surely you don't need to display the same list twice ?

$_SERVER['HTTP_REFERER'];

But if you run a file (that contains the above code) by directly hitting the URL in the browser then you get the following error.

Notice: Undefined index: HTTP_REFERER

The previous answers are correct, but this error can also be caused by attempting to use typeid on an object of a class that has no virtual functions. C++ RTTI requires a vtable, so classes that you wish to perform type identification on require at least one virtual function.

If you want type information to work on a class for which you don't really want any virtual functions, make the destructor virtual.

For image data, I find it simpler to use canvas.toBlob (asynchronous)

function b64toBlob(b64, onsuccess, onerror) {
    var img = new Image();

    img.onerror = onerror;

    img.onload = function onload() {
        var canvas = document.createElement('canvas');
        canvas.width = img.width;
        canvas.height = img.height;

        var ctx = canvas.getContext('2d');
        ctx.drawImage(img, 0, 0, canvas.width, canvas.height);

        canvas.toBlob(onsuccess);
    };

    img.src = b64;
}

var base64Data = 'data:image/jpg;base64,/9j/4AAQSkZJRgABAQA...';
b64toBlob(base64Data,
    function(blob) {
        var url = window.URL.createObjectURL(blob);
        // do something with url
    }, function(error) {
        // handle error
    });

Cron is good for something that will run periodically, like every Saturday at 4am. There's also anacron, which works around power shutdowns, sleeps, and whatnot. As well as at.

But for a one-off solution, that doesn't require root or anything, you can just use date to compute the seconds-since-epoch of the target time as well as the present time, then use expr to find the difference, and sleep that many seconds.

Unless you tell the development server that it's running in development mode, it will assume you're using it in production and warn you not to. The development server is not intended for use in production. It is not designed to be particularly efficient, stable, or secure.

Enable development mode by setting the FLASK_ENV environment variable to development.

$ export FLASK_APP=example
$ export FLASK_ENV=development
$ flask run

If you're running in PyCharm (or probably any other IDE) you can set environment variables in the run configuration.

Development mode enables the debugger and reloader by default. If you don't want these, pass --no-debugger or --no-reloader to the run command.

That warning is just a warning though, it's not an error preventing your app from running. If your app isn't working, there's something else wrong with your code.

This is against the very definition of an iterator, which is a pointer to an object, plus information about how to get to the next object.

An iterator does not know how many more times it will be able to iterate until terminating. This could be infinite, so infinity might be your answer.

You have to store the content as a fact:

- set_fact:
    string_to_echo: "{{ command_output.stdout }}"

To get JSON posted without the application/json content type, use request.get_json(force=True).

@app.route('/process_data', methods=['POST'])
def process_data():
    req_data = request.get_json(force=True)
    language = req_data['language']
    return 'The language value is: {}'.format(language)

#include<stdio.h>
int main(void)
{  
int mat[10][10],i,j;

printf("Enter your matrix\n");  
for(i=0;i<2;i++)
  for(j=0;j<2;j++)
  {  
    scanf("%d",&mat[i][j]);  
  }  
printf("\nHere is your matrix:\n");   
for(i=0;i<2;i++)    
{  
    for(j=0;j<2;j++)  
    {  
      printf("%d ",mat[i][j]);  
    }  
    printf("\n");  
  }  

}

to get the month and year values from the date column

select year(Date) as "year", month(Date) as "month" from Projects

You must to wrap your following code into a block (Either method or static).

BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
System.out.println("What is your name?");
String name = in.readLine(); ;
System.out.println("Hello " + name);

Without a block you can only declare variables and more than that assign them a value in single statement.

For method main() will be best choice for now:

public class details {
    public static void main(String[] args){
        BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
        System.out.println("What is your name?");
        String name = in.readLine(); ;
        System.out.println("Hello " + name);
    }
}

or If you want to use static block then...

public class details {
    static {
        BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
        System.out.println("What is your name?");
        String name = in.readLine(); ;
        System.out.println("Hello " + name);
    }
}

or if you want to build another method then..

public class details {
    public static void main(String[] args){
        myMethod();
    }
    private static void myMethod(){
        BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
        System.out.println("What is your name?");
        String name = in.readLine(); ;
        System.out.println("Hello " + name);
    }
}

Also worry about exception due to BufferedReader .

I encountered a point (not explictly yet mentioned?) which I was stumbling over. That is, not how to return the boolean, but rather how to correctly evaluate it!

I was trying to say if [ myfunc ]; then ..., but that's simply wrong. You must not use the brackets! if myfunc; then ... is the way to do it.

As at @Bruno and others reiterated, true and false are commands, not values! That's very important to understanding booleans in shell scripts.

In this post, I explained and demoed using boolean variables: https://stackoverflow.com/a/55174008/3220983 . I strongly suggest checking that out, because it's so closely related.

Here, I'll provide some examples of returning and evaluating booleans from functions:

This:

test(){ false; }                                               
if test; then echo "it is"; fi                                 

Produces no echo output. (i.e. false returns false)

test(){ true; }                                                
if test; then echo "it is"; fi                                 

Produces:

it is                                                        

(i.e. true returns true)

And

test(){ x=1; }                                                
if test; then echo "it is"; fi                                 

Produces:

it is                                                                           

Because 0 (i.e. true) was returned implicitly.

Now, this is what was screwing me up...

test(){ true; }                                                
if [ test ]; then echo "it is"; fi                             

Produces:

it is                                                                           

AND

test(){ false; }                                                
if [ test ]; then echo "it is"; fi                             

ALSO produces:

it is                                                                           

Using the brackets here produced a false positive! (I infer the "outer" command result is 0.)

The major take away from my post is: don't use brackets to evaluate a boolean function (or variable) like you would for a typical equality check e.g. if [ x -eq 1 ]; then... !

Use TextUtils Method if u working in Android.

TextUtils.isEmpty(str) : Returns true if the string is null or 0-length. Parameters: str the string to be examined Returns: true if str is null or zero length

  if(TextUtils.isEmpty(str)) {
        // str is null or lenght is 0
    }

Below is source code of this method.You can use direclty.

 /**
     * Returns true if the string is null or 0-length.
     * @param str the string to be examined
     * @return true if str is null or zero length
     */
    public static boolean isEmpty(CharSequence str) {
        if (str == null || str.length() == 0)
            return true;
        else
            return false;
    }

Seems like var ctx = $('#myChart'); is returning a list of elements. You would need to reference the first by using ctx[0]. Also height is a property, not a function.

I did it this way in my code:

var ctx = document.getElementById("myChart");
ctx.height = 500;

I've seen a couple cases where this error occurs:

1. using the not equals operator != in a where clause with a list of multiple or values

such as:

where columnName !=('A'||'B')

This can be resolved by using

where columnName not in ('A','B')

2. missing a comparison operator in an if() function:

select if(col1,col1,col2);

in order to select the value in col1 if it exists and otherwise show the value in col2...this throws the error; it can be resolved by using:

select if(col1!='',col1,col2);

npm start runs a script that the app maker built for easy starting of the app npm install installs all the packages in package.json

run npm install first

then run npm start

Look at this repository pageloom it is helpful

download jstz.min.js and add a function to your html page

<script language="javascript">
    function getTimezoneName() {
        timezone = jstz.determine()
        return timezone.name();
    }
</script>

and call this function from your display tag

You need the /g for global matching

replace(/\n/g, "<br />");

This works for me for \n - see this answer if you might have \r\n

NOTE: The dupe is the most complete answer for any combination of \r\n, \r or \n

var messagetoSend = document.getElementById('x').value.replace(/\n/g, "<br />");_x000D_
console.log(messagetoSend);

<textarea id="x" rows="9">_x000D_
    Line 1_x000D_
    _x000D_
    _x000D_
    Line 2_x000D_
    _x000D_
    _x000D_
    _x000D_
    _x000D_
    Line 3_x000D_
</textarea>

UPDATE

It seems some visitors of this question have text with the breaklines escaped as

some text\r\nover more than one line"

In that case you need to escape the slashes:

replace(/\\r\\n/g, "<br />");

NOTE: All browsers will ignore \r in a string when rendering.

As mentioned previously you really can't do this. You can do a modal dialog inside the window using a UI framework, or you can have a popup window, with a script that auto-closes after a timeout... each has a negative aspect. The modal window inside the browser won't create any notification if the window is minimized, and a programmatic (timer based) popup is likely to be blocked by modern browsers, and popup blockers.

With re-encoding:

ffmpeg -y -i seeing_noaudio.mp4 -vf "setpts=1.25*PTS" -r 24 seeing.mp4

Without re-encoding:

First step - extract video to raw bitstream

ffmpeg -y -i seeing_noaudio.mp4 -c copy -f h264 seeing_noaudio.h264

Remux with new framerate

ffmpeg -y -r 24 -i seeing_noaudio.h264 -c copy seeing.mp4

You can use:

SELECT IDENT_CURRENT('tablename')

to access the latest identity for a perticular table.

e.g. Considering following code:

INSERT INTO dbo.MyTable(columns....) VALUES(..........)

INSERT INTO dbo.YourTable(columns....) VALUES(..........)

SELECT IDENT_CURRENT('MyTable')

SELECT IDENT_CURRENT('YourTable')

This would yield to correct value for corresponding tables.

It returns the last IDENTITY value produced in a table, regardless of the connection that created the value, and regardless of the scope of the statement that produced the value.

IDENT_CURRENT is not limited by scope and session; it is limited to a specified table. IDENT_CURRENT returns the identity value generated for a specific table in any session and any scope.

All layout managers bundled in the support library already know how to save and restore scroll position.

Scroll position is restored on the first layout pass which happens when the following conditions are met:

• a layout manager is attached to the RecyclerView
• an adapter is attached to the RecyclerView

Typically you set the layout manager in XML so all you have to do now is

1. Load the adapter with data
2. Then attach the adapter to the RecyclerView

You can do this at any time, it's not constrained to Fragment.onCreateView or Activity.onCreate.

Example: Ensure the adapter is attached every time the data is updated.

viewModel.liveData.observe(this) {
    // Load adapter.
    adapter.data = it

    if (list.adapter != adapter) {
        // Only set the adapter if we didn't do it already.
        list.adapter = adapter
    }
}

The saved scroll position is calculated from the following data:

• Adapter position of the first item on the screen
• Pixel offset of the top of the item from the top of the list (for vertical layout)

Therefore you can expect a slight mismatch e.g. if your items have different dimensions in portrait and landscape orientation.

The RecyclerView/ScrollView/whatever needs to have an android:id for its state to be saved.

Here are my solutions with word boundary.

let s = "At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Temporibus autem quibusdam et aut officiis debitis aut rerum necessitatibus saepe eveniet ut et voluptates repudiandae sint et molestiae non recusandae. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat."
let s_split = s.split(/\s+/);
let word_count = 0;
let result = "";
//1
for(let i = 0; word_count < 100; i++){
  word_count += s_split[i].length+1;
  result += (s_split[i] + " ");
}
console.log(result);
// 2
word_count = 0;
result = s_split.reduce((x,y)=>{
  word_count+=(y.length+1);
  if(word_count>=100) return x;
  else return x+" "+y;}, "").substring(1);
console.log(result);

If your IN clause is too big for MSSQL to handle, you can use a TableValueParameter with Dapper pretty easily.

1. Create your TVP type in MSSQL:

   CREATE TYPE [dbo].[MyTVP] AS TABLE([ProviderId] [int] NOT NULL)
   

2. Create a DataTable with the same column(s) as the TVP and populate it with values

   var tvpTable = new DataTable();
   tvpTable.Columns.Add(new DataColumn("ProviderId", typeof(int)));
   // fill the data table however you wish
   

3. Modify your Dapper query to do an INNER JOIN on the TVP table:

   var query = @"SELECT * FROM Providers P
       INNER JOIN @tvp t ON p.ProviderId = t.ProviderId";
   

4. Pass the DataTable in your Dapper query call

   sqlConn.Query(query, new {tvp = tvpTable.AsTableValuedParameter("dbo.MyTVP")});
   

This also works fantastically when you want to do a mass update of multiple columns - simply build a TVP and do an UPDATE with an inner join to the TVP.

In my opinion one of the worst chosen word's to describe the process, as it is not related to anything in real-life or similar. In general the word "queue" is very bad as if pronounced, it sounds like the English character "q". See the inefficiency here?

enqueue: to place something into a queue; to add an element to the tail of a queue;

dequeue to take something out of a queue; to remove the first available element from the head of a queue

source: https://www.thefreedictionary.com

TRUE and FALSE are keywords, and should not be quoted as strings:

INSERT INTO first VALUES (NULL, 'G22', TRUE);
INSERT INTO first VALUES (NULL, 'G23', FALSE);

By quoting them as strings, MySQL will then cast them to their integer equivalent (since booleans are really just a one-byte INT in MySQL), which translates into zero for any non-numeric string. Thus, you get 0 for both values in your table.

Non-numeric strings cast to zero:

mysql> SELECT CAST('TRUE' AS SIGNED), CAST('FALSE' AS SIGNED), CAST('12345' AS SIGNED);
+------------------------+-------------------------+-------------------------+
| CAST('TRUE' AS SIGNED) | CAST('FALSE' AS SIGNED) | CAST('12345' AS SIGNED) |
+------------------------+-------------------------+-------------------------+
|                      0 |                       0 |                   12345 |
+------------------------+-------------------------+-------------------------+

But the keywords return their corresponding INT representation:

mysql> SELECT TRUE, FALSE;
+------+-------+
| TRUE | FALSE |
+------+-------+
|    1 |     0 |
+------+-------+

Note also, that I have replaced your double-quotes with single quotes as are more standard SQL string enclosures. Finally, I have replaced your empty strings for id with NULL. The empty string may issue a warning.

System.Diagnostics.Process.Start("PATH to exe", "Command Line Arguments");

Use an interface when you want to force developers working in your system (yourself included) to implement a set number of methods on the classes they'll be building.

Use an abstract class when you want to force developers working in your system (yourself included) to implement a set numbers of methods and you want to provide some base methods that will help them develop their child classes.

Another thing to keep in mind is client classes can only extend one abstract class, whereas they can implement multiple interfaces. So, if you're defining your behavior contracts in abstract classes, that means each child class may only conform to a single contract. Sometimes this a good thing, when you want to force your user-programmers along a particular path. Other times it would be bad. Imagine if PHP's Countable and Iterator interfaces were abstract classes instead of interfaces.

One approach that's common when you're uncertain which way to go (as mentioned by cletus below) is to create an interface, and then have your abstract class implement that interface.

This is what do you want? DEMO. Try to shrink the browser's window and you'll see that the elements will be ordered.

What I used? Flexible Box Model or Flexbox.

Just add the follow CSS classes to your container element (in this case div#container):

flex-init-setup and flex-ppal-setup.

Where:

1. flex-init-setup means flexbox init setup; and
2. flex-ppal-setup means flexbox principal setup

Here are the CSS rules:

 .flex-init-setup {
     display: -webkit-box;
     display: -moz-box;
     display: -webkit-flex;
     display: -ms-flexbox;
     display: flex;
 }
 .flex-ppal-setup {
     -webkit-flex-flow: column wrap;
     -moz-flex-flow: column wrap;
     flex-flow: column wrap;
     -webkit-justify-content: center;
     -moz-justify-content: center;
     justify-content: center;
 }

Be good, Leonardo

There is also zzos. (Full disclosure: I wrote it). It only decompiles the actual resources, not the dex part (baksmali, which I did not write, does an excellent job of handling that part).

Zzos is much less known than apktool, but there are some APKs that are better handled by it (and vice versa - more on that later). Mostly, APKs containing custom resource types (not modifiers) were not handled by apktool the last time I checked, and are handled by zzos. There are also some cases with escaping that zzos handles better.

On the negative side of things, zzos (current version) requires a few support tools to install. It is written in perl (as opposed to APKTool, which is written in Java), and uses aapt for the actual decompilation. It also does not decompile attrib resources yet (which APKTool does).

The meaning of the name is "aapt", Android's resource compiler, shifted down one letter.

You can try in this way. I had applied this in my case.

#include<stdio.h>

struct name
{

  char first[20];

  char last[30];

};

//globally

// struct name sara={"Sara","Black"};

int main()

 {

//locally

struct name sara={"Sara","Black"};


printf("%s",sara.first);

printf("%s",sara.last);

}

No.

An ArrayList can be empty (or with nulls as items) an not be null. It would be considered empty. You can check for am empty ArrayList with:

ArrayList arrList = new ArrayList();
if(arrList.isEmpty())
{
    // Do something with the empty list here.
}

Or if you want to create a method that checks for an ArrayList with only nulls:

public static Boolean ContainsAllNulls(ArrayList arrList)
{
    if(arrList != null)
    {
        for(object a : arrList)
            if(a != null) return false;
    }

    return true;
}

Two options I can think of (though neither of them is programatically detecting porn):

1. Block all uploaded images until one of your administrators has looked at them. There's no reason why this should take a long time: you could write some software that shows 10 images a second, almost as a movie - even at this speed, it's easy for a human being to spot a potentially pornographic image. Then you rewind in this software and have a closer look.
2. Add the usual "flag this image as inappropriate" option.

If you're using a Unix like OS (Linux, OSX, etc) then you can use a combination of find and egrep to search for require statements containing your package name:

find . -path ./node_modules -prune -o -name "*.js" -exec egrep -ni 'name-of-package' {} \;

If you search for the entire require('name-of-package') statement, remember to use the correct type of quotation marks:

find . -path ./node_modules -prune -o -name "*.js" -exec egrep -ni 'require("name-of-package")' {} \;

or

find . -path ./node_modules -prune -o -name "*.js" -exec egrep -ni "require('name-of-package')" {} \;

The downside is that it's not fully automatic, i.e. it doesn't extract package names from package.json and check them. You need to do this for each package yourself. Since package.json is just JSON this could be remedied by writing a small script that uses child_process.exec to run this command for each dependency. And make it a module. And add it to the NPM repo...

Yep, just add parenthesis (calling the function). Make sure the function is in scope and actually returns something.

<ul class="ui-listview ui-radiobutton" ng-repeat="meter in meters">
  <li class = "ui-divider">
    {{ meter.DESCRIPTION }}
    {{ htmlgeneration() }}
  </li>
</ul>

As mentioned before, there is a tool SQLite Database Browser, which does this. Lyckily, this tool keeps a log of all operations performed by the user or the application. Doing this once and looking at the application log, you will see the code involved. Copy the query and paste as required. Worked for me. Hope this helps

Convert with JavaScript using .toLowerCase() and capitalize would do the rest.

With Microsoft Sql Server:

--
-- Create test case
--
DECLARE @myDateTime DATETIME
SET @myDateTime = '2008-05-03'

--
-- Convert string
--
SELECT LEFT(CONVERT(VARCHAR, @myDateTime, 120), 10)

The backslash-paren stuff means, "while matching the pattern, hold on to the stuff that matches in here." Later, on the replacement text side, you can get those remembered fragments back with "\1" (first parenthesized block), "\2" (second block), and so on.

There's a difference between the raw queries and standard selects (between the DB::raw and DB::select methods).

You can do what you want using a DB::select and simply dropping in the ? placeholder much like you do with prepared statements (it's actually what it's doing).

A small example:

$results = DB::select('SELECT * FROM user WHERE username=?', ['jason']);

The second parameter is an array of values that will be used to replace the placeholders in the query from left to right.

1. Try to use double quotes (") instead of single ones (').
2. To preserve JSON format quotes, try doubling them ("").

3. To preserve quotes inside data, try to double-escape them like this (\\"").

   curl ... -d "{""data1"": ""data1 goes here"", ""data2"": ""data2 goes here""}"
   curl ... -d "{""data"": ""data \\""abc\\"" goes here""}"
   

var audio = new Audio('audio_file.mp3');

function post()
{
  var tval=document.getElementById("mess").value;   
  var inhtml=document.getElementById("chat_div");
  inhtml.innerHTML=inhtml.innerHTML+"<p class='me'>Me:-"+tval+"</p>";
  inhtml.innerHTML=inhtml.innerHTML+"<p class='demo'>Demo:-Hi! how are you</p>";
  audio.play();
}

this code is from talkerscode For complete tutorial visit http://talkerscode.com/webtricks/play-sound-on-notification-using-javascript-and-php.php