You need to move the unique_ptr:

vec.push_back(std::move(ptr2x));

unique_ptr guarantees that a single unique_ptr container has ownership of the held pointer. This means that you can't make copies of a unique_ptr (because then two unique_ptrs would have ownership), so you can only move it.

Note, however, that your current use of unique_ptr is incorrect. You cannot use it to manage a pointer to a local variable. The lifetime of a local variable is managed automatically: local variables are destroyed when the block ends (e.g., when the function returns, in this case). You need to dynamically allocate the object:

std::unique_ptr<int> ptr(new int(1));

In C++14 we have an even better way to do so:

make_unique<int>(5);

You can simply use std::bind with a your destroy function.

std::unique_ptr<Bar, std::function<void(Bar*)>> bar(create(), std::bind(&destroy,
    std::placeholders::_1));

But of course you can also use a lambda.

std::unique_ptr<Bar, std::function<void(Bar*)>> ptr(create(), [](Bar* b){ destroy(b);});

is there some other clause in the language specification that this exploits?

Yes, see 12.8 §34 and §35:

When certain criteria are met, an implementation is allowed to omit the copy/move construction of a class object [...] This elision of copy/move operations, called copy elision, is permitted [...] in a return statement in a function with a class return type, when the expression is the name of a non-volatile automatic object with the same cv-unqualified type as the function return type [...]

When the criteria for elision of a copy operation are met and the object to be copied is designated by an lvalue, overload resolution to select the constructor for the copy is first performed as if the object were designated by an rvalue.

Just wanted to add one more point that returning by value should be the default choice here because a named value in the return statement in the worst case, i.e. without elisions in C++11, C++14 and C++17 is treated as an rvalue. So for example the following function compiles with the -fno-elide-constructors flag

std::unique_ptr<int> get_unique() {
  auto ptr = std::unique_ptr<int>{new int{2}}; // <- 1
  return ptr; // <- 2, moved into the to be returned unique_ptr
}

...

auto int_uptr = get_unique(); // <- 3

With the flag set on compilation there are two moves (1 and 2) happening in this function and then one move later on (3).

I faced a case where I had to use std::unique_ptr<bool[]>, which was in the HDF5 library (A library for efficient binary data storage, used a lot in science). Some compilers (Visual Studio 2015 in my case) provide compression of std::vector<bool> (by using 8 bools in every byte), which is a catastrophe for something like HDF5, which doesn't care about that compression. With std::vector<bool>, HDF5 was eventually reading garbage because of that compression.

Guess who was there for the rescue, in a case where std::vector didn't work, and I needed to allocate a dynamic array cleanly? :-)

If you are stuck with c++11, you can get make_unique from abseil-cpp, an open source collection of C++ libraries drawn from Google’s internal codebase.

Edit: This answer is wrong, even though, strictly speaking, the code works. I'm only leaving it here because the discussion under it is too useful. This other answer is the best answer given at the time I last edited this: How do I pass a unique_ptr argument to a constructor or a function?

The basic idea of ::std::move is that people who are passing you the unique_ptr should be using it to express the knowledge that they know the unique_ptr they're passing in will lose ownership.

This means you should be using an rvalue reference to a unique_ptr in your methods, not a unique_ptr itself. This won't work anyway because passing in a plain old unique_ptr would require making a copy, and that's explicitly forbidden in the interface for unique_ptr. Interestingly enough, using a named rvalue reference turns it back into an lvalue again, so you need to use ::std::move inside your methods as well.

This means your two methods should look like this:

Base(Base::UPtr &&n) : next(::std::move(n)) {} // Spaces for readability

void setNext(Base::UPtr &&n) { next = ::std::move(n); }

Then people using the methods would do this:

Base::UPtr objptr{ new Base; }
Base::UPtr objptr2{ new Base; }
Base fred(::std::move(objptr)); // objptr now loses ownership
fred.setNext(::std::move(objptr2)); // objptr2 now loses ownership

As you see, the ::std::move expresses that the pointer is going to lose ownership at the point where it's most relevant and helpful to know. If this happened invisibly, it would be very confusing for people using your class to have objptr suddenly lose ownership for no readily apparent reason.

From cppreference, one of the std::unique_ptr constructors is

explicit unique_ptr( pointer p ) noexcept;

So to create a new std::unique_ptr is to pass a pointer to its constructor.

unique_ptr<int> uptr (new int(3));

Or it is the same as

int *int_ptr = new int(3);
std::unique_ptr<int> uptr (int_ptr);

The different is you don't have to clean up after using it. If you don't use std::unique_ptr (smart pointer), you will have to delete it like this

delete int_ptr;

when you no longer need it or it will cause a memory leak.

unique_ptr is the light-weight smart pointer of choice if you just have a dynamic object somewhere for which one consumer has sole (hence "unique") responsibility -- maybe a wrapper class that needs to maintain some dynamically allocated object. unique_ptr has very little overhead. It is not copyable, but movable. Its type is template <typename D, typename Deleter> class unique_ptr;, so it depends on two template parameters.

unique_ptr is also what auto_ptr wanted to be in the old C++ but couldn't because of that language's limitations.

shared_ptr on the other hand is a very different animal. The obvious difference is that you can have many consumers sharing responsibility for a dynamic object (hence "shared"), and the object will only be destroyed when all shared pointers have gone away. Additionally you can have observing weak pointers which will intelligently be informed if the shared pointer they're following has disappeared.

Internally, shared_ptr has a lot more going on: There is a reference count, which is updated atomically to allow the use in concurrent code. Also, there's plenty of allocation going on, one for an internal bookkeeping "reference control block", and another (often) for the actual member object.

But there's another big difference: The shared pointers type is always template <typename T> class shared_ptr;, and this is despite the fact that you can initialize it with custom deleters and with custom allocators. The deleter and allocator are tracked using type erasure and virtual function dispatch, which adds to the internal weight of the class, but has the enormous advantage that different sorts of shared pointers of type T are all compatible, no matter the deletion and allocation details. Thus they truly express the concept of "shared responsibility for T" without burdening the consumer with the details!

Both shared_ptr and unique_ptr are designed to be passed by value (with the obvious movability requirement for the unique pointer). Neither should make you worried about the overhead, since their power is truly astounding, but if you have a choice, prefer unique_ptr, and only use shared_ptr if you really need shared responsibility.

My favorite way is called do the sleep to 50. here i variable need to be used inside echo statements.

for i in $(seq 1 50); do
  echo -ne "$i%\033[0K\r"
  sleep 50
done
echo "ended"

Another scenario, that was not yet mentioned here, that caused this error is an API that receives Pageable (or Sort) and passes it, as is, to the JPA repository when calling the API from Swagger.

Swagger default value for the Pageable parameter is this:

  {
    "page": 0,
    "size": 0,
    "sort": [
      "string"
    ]
  }

Notice the "string" there which is a property that does exist. Running the API without deleting or changing it will cause org.springframework.data.mapping.PropertyReferenceException: No property string found for type ...

Can the screenshot or icon be transformed (scaled, rotated, skewed ...)? There are quite a few methods on top of my head that could possibly help you:

• Simple euclidean distance as mentioned by @carlosdc (doesn't work with transformed images and you need a threshold).
• (Normalized) Cross Correlation - a simple metrics which you can use for comparison of image areas. It's more robust than the simple euclidean distance but doesn't work on transformed images and you will again need a threshold.
• Histogram comparison - if you use normalized histograms, this method works well and is not affected by affine transforms. The problem is determining the correct threshold. It is also very sensitive to color changes (brightness, contrast etc.). You can combine it with the previous two.
• Detectors of salient points/areas - such as MSER (Maximally Stable Extremal Regions), SURF or SIFT. These are very robust algorithms and they might be too complicated for your simple task. Good thing is that you do not have to have an exact area with only one icon, these detectors are powerful enough to find the right match. A nice evaluation of these methods is in this paper: Local invariant feature detectors: a survey.

Most of these are already implemented in OpenCV - see for example the cvMatchTemplate method (uses histogram matching): http://dasl.mem.drexel.edu/~noahKuntz/openCVTut6.html. The salient point/area detectors are also available - see OpenCV Feature Detection.

dt = dt.AsEnumerable().GroupBy(r => r.Field<int>("ID")).Select(g => g.First()).CopyToDataTable();

git clone is to fetch your repositories from the remote git server.

git checkout is to checkout your desired status of your repository (like branches or particular files).

E.g., you are currently on master branch and you want to switch into develop branch.

git checkout develop_branch

E.g., you want to checkout to a particular status of a particular file

git checkout commit_point_A -- <filename>

Here is a good reference for you to learn Git, lets you understand much more easily.

This is my solution:

1. Copy&paste $ANDROID_SDK/extras/android/support/v7/appcompat to your project ROOT

2. Open "Project Structure" on Intellij, click "Modules" on "Project Settings", then click "appcompat"->"android', make sure "Library Module" checkbox is checked.

3. click "YOUR-PROJECT_NAME" under "appcompat", remove "android-support-v4" and "android-support-v7-compat"; ensure the checkbox before "appcompat" is checked. And, click "ok" to close "Project Structure" dialogue.

4. back to the mainwindow, click "appcompat"->"libs" on the top-left project area. Right-click on "android-support-v4", select menuitem "Add as library", change "Add to Module" to "Your-project". Same with "android-support-v7-compat".

After doing above, intellij should be able to correctly find the android-support-XXXX modules.

Good Luck!

For me, the trick was to run svn cleanup at the top of my working copy, not in the folder where I'd been working the whole time before the problem occurred.

TextView txtvw = (TextView)findViewById(R.id.TextView01);
        txtvw.setText(readTxt());

 private String readTxt()
    {
    InputStream raw = getResources().openRawResource(R.raw.hello);

    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();

    int i;
    try
    {
        i = raw.read();
        while (i != -1)
        {
            byteArrayOutputStream.write(i);
            i = raw.read();
        }
        raw.close();
    }
    catch (IOException e)
    {
        // TODO Auto-generated catch block

        e.printStackTrace();
    }


    return byteArrayOutputStream.toString();

}

TextView01:: txtview in linearlayout hello:: .txt file in res/raw folder (u can access ny othr folder as wel)

Ist 2 lines are 2 written in onCreate() method

rest is to be written in class extending Activity!!

1. Improper use of eval opens up your code for injection attacks

2. Debugging can be more challenging (no line numbers, etc.)

3. eval'd code executes slower (no opportunity to compile/cache eval'd code)

Edit: As @Jeff Walden points out in comments, #3 is less true today than it was in 2008. However, while some caching of compiled scripts may happen this will only be limited to scripts that are eval'd repeated with no modification. A more likely scenario is that you are eval'ing scripts that have undergone slight modification each time and as such could not be cached. Let's just say that SOME eval'd code executes more slowly.

Select 'YOU WILL SEE ME' as ANSWER from dual
where exists (select 1 from dual where 1 = 1);

Select 'YOU CAN NOT SEE ME' as ANSWER from dual
where exists (select 1 from dual where 1 = 0);

Select 'YOU WILL SEE ME, TOO' as ANSWER from dual
where not exists (select 1 from dual where 1 = 0);

I get this every time I want to create an application in VC++.

Right-click the project, select Properties then under 'Configuration properties | C/C++ | Code Generation', select "Multi-threaded Debug (/MTd)" for Debug configuration.

Note that this does not change the setting for your Release configuration - you'll need to go to the same location and select "Multi-threaded (/MT)" for Release.

Using try except and the right error code from errno module gets rid of the race condition and is cross-platform:

import os
import errno

def make_sure_path_exists(path):
    try:
        os.makedirs(path)
    except OSError as exception:
        if exception.errno != errno.EEXIST:
            raise

In other words, we try to create the directories, but if they already exist we ignore the error. On the other hand, any other error gets reported. For example, if you create dir 'a' beforehand and remove all permissions from it, you will get an OSError raised with errno.EACCES (Permission denied, error 13).

In 2020 this is still not available in the Firebase SDK however it is available in Firebase Extensions (Beta) however it's pretty complex to setup and use...

A reasonable approach

Helpers... (create/delete seems redundant but is cheaper than onUpdate)

export const onCreateCounter = () => async (
  change,
  context
) => {
  const collectionPath = change.ref.parent.path;
  const statsDoc = db.doc("counters/" + collectionPath);
  const countDoc = {};
  countDoc["count"] = admin.firestore.FieldValue.increment(1);
  await statsDoc.set(countDoc, { merge: true });
};

export const onDeleteCounter = () => async (
  change,
  context
) => {
  const collectionPath = change.ref.parent.path;
  const statsDoc = db.doc("counters/" + collectionPath);
  const countDoc = {};
  countDoc["count"] = admin.firestore.FieldValue.increment(-1);
  await statsDoc.set(countDoc, { merge: true });
};

export interface CounterPath {
  watch: string;
  name: string;
}

Exported Firestore hooks

export const Counters: CounterPath[] = [
  {
    name: "count_buildings",
    watch: "buildings/{id2}"
  },
  {
    name: "count_buildings_subcollections",
    watch: "buildings/{id2}/{id3}/{id4}"
  }
];


Counters.forEach(item => {
  exports[item.name + '_create'] = functions.firestore
    .document(item.watch)
    .onCreate(onCreateCounter());

  exports[item.name + '_delete'] = functions.firestore
    .document(item.watch)
    .onDelete(onDeleteCounter());
});

In action

The building root collection and all sub collections will be tracked.

Here under the /counters/ root path

Now collection counts will update automatically and eventually! If you need a count, just use the collection path and prefix it with counters.

const collectionPath = 'buildings/138faicnjasjoa89/buildingContacts';
const collectionCount = await db
  .doc('counters/' + collectionPath)
  .get()
  .then(snap => snap.get('count'));

Limitations

As this approach uses a single database and document, it is limited to the Firestore constraint of 1 Update per Second for each counter. It will be eventually consistent, but in cases where large amounts of documents are added/removed the counter will lag behind the actual collection count.

@alesko : it is not possible to only do only git pull after checkout my_branch to update master branch only.
Because git pull will also merge to the current branch -> in your scenario to the my_branch

@Simon: that will do also the push. why is that?

$ git branch -u origin/master
Branch master set up to track remote branch master from origin.

and acording to docs:

-u <upstream>
  Set up <branchname>'s tracking information so <upstream> is considered  
  <branchname>'s upstream branch. If no <branchname> is specified,  
  then it defaults to the current branch.

2012-04-20 11:14:32.617:WARN:oejx.XmlParser:FATAL@file:/C:/Users/***/workspace/Test/WEB-INF/web.xml line:1 col:7 : org.xml.sax.SAXParseException: The processing instruction target matching "[xX][mM][lL]" is not allowed.

You Log says, that you web.xml is malformed. Line 1, colum 7. It may be a UTF-8 Byte-Order-Marker

Try to verify, that your xml is wellformed and does not have a BOM. Java doesn't use BOMs.

Either replace double quotes around type="text" with single quotes, Like

"<form><input type='text'/></form>"

OR

replace double quotes wrapping data-content with singe quotes, Like

data-content='<form><input type="text"/></form>'

(2012 answer, may be out of date) If you want to support pre Honeycomb, you will need to put in backward compatibility prior to API 13. Something like:

int measuredWidth = 0;
int measuredHeight = 0;
WindowManager w = getWindowManager();

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
    Point size = new Point();
    w.getDefaultDisplay().getSize(size);
    measuredWidth = size.x;
    measuredHeight = size.y;
} else {
    Display d = w.getDefaultDisplay();
    measuredWidth = d.getWidth();
    measuredHeight = d.getHeight();
}

Of course the deprecated methods will eventually be taken out of the the most recent SDKs, but while we still rely on most of our users having Android 2.1, 2.2 and 2.3, this is what we are left with.

First examine if you really need a global variable instead using it blatantly without consideration to your software architecture.

Let's assuming it passes the test. Depending on usage, Globals can be hard to debug with race conditions and many other "bad things", it's best to approach them from an angle where you're prepared to handle such bad things. So,

1. Wrap all such Global variables into a single static class (for manageability).
2. Have Properties instead of fields(='variables'). This way you have some mechanisms to address any issues with concurrent writes to Globals in the future.

The basic outline for such a class would be:

public class Globals
{
    private static bool _expired;
    public static bool Expired 
    {
        get
        {
            // Reads are usually simple
            return _expired;
        }
        set
        {
            // You can add logic here for race conditions,
            // or other measurements
            _expired = value;
        }
    }
    // Perhaps extend this to have Read-Modify-Write static methods
    // for data integrity during concurrency? Situational.
}

Usage from other classes (within same namespace)

// Read
bool areWeAlive = Globals.Expired;

// Write
// past deadline
Globals.Expired = true;

try this in your post methods callback function

$(':input','#myform')
 .not(':button, :submit, :reset, :hidden')
 .val('')
 .removeAttr('checked')
 .removeAttr('selected');

for more info read this

Changing text color of button

Because this method is now deprecated

button.setTextColor(getResources().getColor(R.color.your_color));

I use the following:

button.setTextColor(ContextCompat.getColor(mContext, R.color.your_color));

I also wanted to clarify that if you have complex url parameters to build, you will need to build them manually. ie if your query is example.com/?latlng=-37,147, instead of providing the lat and lng values individually, you will need to build the latlng string externally, then provide it as a parameter, ie:

public interface LocationService {    
    @GET("/example/")
    void getLocation(@Query(value="latlng", encoded=true) String latlng);
}

Note the encoded=true is necessary, otherwise retrofit will encode the comma in the string parameter. Usage:

String latlng = location.getLatitude() + "," + location.getLongitude();
service.getLocation(latlng);

A common space-saving trick is storing boolean values as an Oracle CHAR, rather than NUMBER:

3 steps:

1. Download your custom font on Goole Fonts and down load .css file ex: Download http://fonts.googleapis.com/css?family=Open+Sans:400italic,600italic,400,600,300 and save as example.css
2. Open file you download (example.css). Now you must download all font-face file and save them on fonts directory.
3. Edit example.css: replace all font-face file to your .css download

Ex:

@font-face {_x000D_
  font-family: 'Open Sans';_x000D_
  font-style: italic;_x000D_
  font-weight: 400;_x000D_
  src: local('Open Sans Italic'), local('OpenSans-Italic'), url(http://fonts.gstatic.com/s/opensans/v14/xjAJXh38I15wypJXxuGMBvZraR2Tg8w2lzm7kLNL0-w.woff2) format('woff2');_x000D_
  unicode-range: U+0460-052F, U+20B4, U+2DE0-2DFF, U+A640-A69F;_x000D_
}

Look at src: -> url. Download http://fonts.gstatic.com/s/opensans/v14/xjAJXh38I15wypJXxuGMBvZraR2Tg8w2lzm7kLNL0-w.woff2 and save to fonts directory. After that change url to all your downloaded file. Now it will be look like

@font-face {_x000D_
  font-family: 'Open Sans';_x000D_
  font-style: italic;_x000D_
  font-weight: 400;_x000D_
  src: local('Open Sans Italic'), local('OpenSans-Italic'), url(fonts/xjAJXh38I15wypJXxuGMBvZraR2Tg8w2lzm7kLNL0-w.woff2) format('woff2');_x000D_
  unicode-range: U+0460-052F, U+20B4, U+2DE0-2DFF, U+A640-A69F;_x000D_
}

** Download all fonts contain .css file Hope it will help u

This works as of android 7.1.1, non-rooted

adb shell am start -a android.intent.action.MAIN -n com.android.settings/.wifi.WifiSettings && adb shell input keyevent 23 && adb shell input keyevent 23

This will launch the activity and then send the DPAD center keyevent. I added another DPAD center as an experiment to see if you can enable it in the same way.

Solution for Mac

Reason: Eclipse copies from one location to other

Solution: Paths change needed in /Applications/eclipse/Eclipse.app/Contents/MacOS/eclipse.ini

Fix path for plugins\org.eclipse.equinox.launcher_1.0.100.v20080509-1800.jar

You could try returning a VBA Collection.

As long as you dealing with pair values, like "Version=1.31", you could store the identifier as a key ("Version") and the actual value (1.31) as the item itself.

Dim c As New Collection
Dim item as Variant
Dim key as String
key = "Version"
item = 1.31
c.Add item, key
'Then return c

Accessing the values after that it's a breeze:

c.Item("Version") 'Returns 1.31
or
c("Version") '.Item is the default member

Does it make sense?

SET

SET @var_name = value 

OR

SET @var := value

both operators = and := are accepted

SELECT

SELECT col1, @var_name := col2 from tb_name WHERE "conditon";

if multiple record sets found only the last value in col2 is keep (override);

SELECT col1, col2 INTO @var_name, col3 FROM .....

in this case the result of select is not containing col2 values

Ex both methods used

-- TRIGGER_BEFORE_INSERT --- setting a column value from calculations

...
SELECT count(*) INTO @NR FROM a_table WHERE a_condition;
SET NEW.ord_col =  IFNULL( @NR, 0 ) + 1;
...

I usually use this way that works well:

mv fold/file /tmp
git checkout fold/file

I think the reason AngularJS does not say much about form submission because it depends more on 'two-way data binding'. In traditional html development you had one way data binding, i.e. once DOM rendered any changes you make to DOM element did not reflect in JS Object, however in AngularJS it works both way. Hence there's in fact no need to form submission. I have done a mid sized application using AngularJS without the need to form submission. If you are keen to submit form you can write a directive wrapping up your form which handles ENTER keydown and SUBMIT button click events and call form.submit().

If you want the sample source code of such a directive, please let me know by commenting on this. I figured out it would a simple directive that you can write yourself.

In my case, the accepted answer is not working, It stops Exception but it causes some inconsistency in my List. The following solution is perfectly working for me.

List<String> list = new ArrayList<>();
List<String> itemsToRemove = new ArrayList<>();

for (String value: list) {
   if (value.length() > 5) { // your condition
       itemsToRemove.add(value);
   }
}
list.removeAll(itemsToRemove);

In this code, I have added the items to remove, in another list and then used list.removeAll method to remove all required items.

Or something like:

df.loc[df['a'].isnull(),'a']=0
df.loc[df['b'].isnull(),'b']=0

and if there is more:

for i in your_list:
    df.loc[df[i].isnull(),i]=0

strip() returns the string after removing leading and trailing whitespace. see doc

In your case, you may want to try replace():

string2 = string1.replace('\n', '')

In Typescript and ES6 you can also use for..of:

for (var product of products) {
     console.log(product.product_desc)
}

which will be transcoded to javascript:

for (var _i = 0, products_1 = products; _i < products_1.length; _i++) {
    var product = products_1[_i];
    console.log(product.product_desc);
}

Check FlatStyle property. Setting it to "System" makes the checkbox sunken in my environment.

I'm assuming you're using your own array types as opposed to the built-in .NET arrays:

public string[] merge(input1, input2)
{
    string[] output = new string[input1.length + input2.length];
    for(int i = 0; i < output.length; i++)
    {
        if (i >= input1.length)
            output[i] = input2[i-input1.length];
        else
            output[i] = input1[i];
    }
    return output;
}

Another way of doing this would be using the built in ArrayList class.

public ArrayList merge(input1, input2)
{
    Arraylist output = new ArrayList();
    foreach(string val in input1)
        output.add(val);
    foreach(string val in input2)
        output.add(val);
    return output;
}

Both examples are C#.

export class Car {
  id: number;
  make: string;
  model: string;
  color: string;
  year: Date;

  constructor(car) {
      {
        this.id = car.id;
        this.make = car.make || '';
        this.model = car.model || '';
        this.color = car.color || '';
        this.year = new Date(car.year).getYear();
      }
  }
}

The || can become super useful for very complex data objects to default data that doesn't exist.

. .

In your component.ts or service.ts file you can deserialize response data into the model:

// Import the car model
import { Car } from './car.model.ts';

// If single object
car = new Car(someObject);

// If array of cars
cars = someDataToDeserialize.map(c => new Car(c));

No application written in 2017 (or thereafter) that intends to incorporate serious cryptography should use RSA any more. There are better options for PHP public-key cryptography.

There are two big mistakes that people make when they decide to encrypt with RSA:

1. Developers choose the wrong padding mode.
2. Since RSA cannot, by itself, encrypt very long strings, developers will often break a string into small chunks and encrypt each chunk independently. Sort of like ECB mode.

The Best Alternative: sodium_crypto_box_seal() (libsodium)

$keypair = sodium_crypto_box_keypair();
$publicKey = sodium_crypto_box_publickey($keypair);
// ...
$encrypted = sodium_crypto_box_seal(
    $plaintextMessage,
    $publicKey
);
// ...
$decrypted = sodium_crypto_box_seal_open(
    $encrypted,
    $keypair
);

Simple and secure. Libsodium will be available in PHP 7.2, or through PECL for earlier versions of PHP. If you need a pure-PHP polyfill, get paragonie/sodium_compat.

Begrudgingly: Using RSA Properly

The only reason to use RSA in 2017 is, "I'm forbidden to install PECL extensions and therefore cannot use libsodium, and for some reason cannot use paragonie/sodium_compat either."

Your protocol should look something like this:

1. Generate a random AES key.
2. Encrypt your plaintext message with the AES key, using an AEAD encryption mode or, failing that, CBC then HMAC-SHA256.
3. Encrypt your AES key (step 1) with your RSA public key, using RSAES-OAEP + MGF1-SHA256
4. Concatenate your RSA-encrypted AES key (step 3) and AES-encrypted message (step 2).

Instead of implementing this yourself, check out EasyRSA.

Further reading: Doing RSA in PHP correctly.

Try this

$("#message span").text("hello world!");

function Errormessage(txt) {
    var elem = $("#message");
    elem.fadeIn("slow");
    // find the span inside the div and assign a text
    elem.children("span").text("your text");

    elem.children("a.close-notify").click(function() {
        elem.fadeOut("slow");
    });
}

You cant add add items in string array more than its size, i'll suggest you to use ArrayList you can add items dynamically at run time in arrayList if you feel any problem you can freely ask

I found this very useful.

If you are getting the following message

start: Rejected send message, 1 matched rules; type="method_call", sender=":1.84" (uid=1000 pid=3215 comm="start mongodb ") interface="com.ubuntu.Upstart0_6.Job" member="Start" error name="(unset)" requested_reply="0" destination="com.ubuntu.Upstart" (uid=0 pid=1 comm="/sbin/init")
shriprasad@shriprasad-HP-430-Notebook-PC:/var/lib/mongodb$ mongo

You must be trying to start the mongodb service as user other than root. You must be root user. Thus log in as root and then run following command as follows:

sudo bash

followed by

service mongodb start

I would set the maximum size, minimum size and remove the gripper icon of the window.

Set properties (MaximumSize, MinimumSize, and SizeGripStyle):

this.MaximumSize = new System.Drawing.Size(500, 550);
this.MinimumSize = new System.Drawing.Size(500, 550);
this.SizeGripStyle = System.Windows.Forms.SizeGripStyle.Hide;

Inside of your loop, you have the key, which you can use to retrieve the value from the Map:

for (String key: mss1.keySet()) {
    System.out.println(key + ": " + mss1.get(key));
}

Box shadows can use commas to have multiple effects, just like with background images (in CSS3).

Here's an updated answer for Angular 4 & 5. TransformRequest and angular.identity were dropped. I've also included the ability to combine files with JSON data in one request.

Angular 5 Solution:

import {HttpClient} from '@angular/common/http';

uploadFileToUrl(files, restObj, uploadUrl): Promise<any> {
  // Note that setting a content-type header
  // for mutlipart forms breaks some built in
  // request parsers like multer in express.
  const options = {} as any; // Set any options you like
  const formData = new FormData();

  // Append files to the virtual form.
  for (const file of files) {
    formData.append(file.name, file)
  }

  // Optional, append other kev:val rest data to the form.
  Object.keys(restObj).forEach(key => {
    formData.append(key, restObj[key]);
  });

  // Send it.
  return this.httpClient.post(uploadUrl, formData, options)
    .toPromise()
    .catch((e) => {
      // handle me
    });
}

Angular 4 Solution:

// Note that these imports below are deprecated in Angular 5
import {Http, RequestOptions} from '@angular/http';

uploadFileToUrl(files, restObj, uploadUrl): Promise<any> {
  // Note that setting a content-type header
  // for mutlipart forms breaks some built in
  // request parsers like multer in express.
  const options = new RequestOptions();
  const formData = new FormData();

  // Append files to the virtual form.
  for (const file of files) {
    formData.append(file.name, file)
  }

  // Optional, append other kev:val rest data to the form.
  Object.keys(restObj).forEach(key => {
    formData.append(key, restObj[key]);
  });

  // Send it.
  return this.http.post(uploadUrl, formData, options)
    .toPromise()
    .catch((e) => {
      // handle me
    });
}

a1 = c(1, 2, 3, 4, 5)
a2 = c(6, 7, 8, 9, 10)
a3 = c(11, 12, 13, 14, 15)
aframe = data.frame(a1, a2, a3)
avector <- as.vector(aframe['a2'])

avector<-unlist(avector)
#this will return a vector of type "integer"

You can use <script>'s defer attribute. It specifies that the script will be executed when the page has finished parsing.

<script defer src="path/to/yourscript.js">

A nice article about this: http://davidwalsh.name/script-defer

Browser support seems pretty good: http://caniuse.com/#search=defer

Another great article about loading JS using defer and async: https://flaviocopes.com/javascript-async-defer/

The compiler doesn't know it's an array, it's trusting the programmer. Deleting a pointer to a single int with delete [] would result in undefined behavior. Your second main() example is unsafe, even if it doesn't immediately crash.

The compiler does have to keep track of how many objects need to be deleted somehow. It may do this by over-allocating enough to store the array size. For more details, see the C++ Super FAQ.

I've found out a nice workaround to IP blocking when scraping sites. It lets you run a Scraper indefinitely by running it from Google App Engine and redeploying it automatically when you get a 429.

Check out this article

The problem is probably somewhere else. Try this code for example:

Sub test()

  origNum = "006260006"
  creditOrDebit = "D"

  If (origNum = "006260006" Or origNum = "30062600006") And creditOrDebit = "D" Then
    MsgBox "OK"
  End If

End Sub

And you will see that your Or works as expected. Are you sure that your ElseIf statement is executed (it will not be executed if any of the if/elseif before is true)?

You might want to check out this old thread.

If you can omit AM/PM portion and using SQL Server 2008, you should go with the approach suggested here

To get the rid from nenoseconds in time(SQL Server 2008), do as below :

SELECT CONVERT(TIME(0),GETDATE()) AS HourMinuteSecond

I hope it helps!!

Yes you can. You can even test it:

var i = 0;_x000D_
var timer = setInterval(function() {_x000D_
  console.log(++i);_x000D_
  if (i === 5) clearInterval(timer);_x000D_
  console.log('post-interval'); //this will still run after clearing_x000D_
}, 200);

In this example, this timer clears when i reaches 5.

This is the way it worked for me, because with other methods the form was sent empty:

<form name="yourform" id="yourform" method="POST" action="yourpage.html">
    <input type=hidden name="data" value="yourdata">
    <input type="submit" id="send" name="send" value="Send">
</form>
<script>            
    document.addEventListener("DOMContentLoaded", function(event) {
            document.createElement('form').submit.call(document.getElementById('yourform'));
            });         
</script>

Life is too short to spend it on messing with paths, etc.

Since I had Homebrew installed on the iMac, I just ran this command:

brew install gradle

The Ionic3 project started to build successfully.

This is documented on ?logical. The pertinent section of which is:

Details:

     ‘TRUE’ and ‘FALSE’ are reserved words denoting logical constants
     in the R language, whereas ‘T’ and ‘F’ are global variables whose
     initial values set to these.  All four are ‘logical(1)’ vectors.

     Logical vectors are coerced to integer vectors in contexts where a
     numerical value is required, with ‘TRUE’ being mapped to ‘1L’,
     ‘FALSE’ to ‘0L’ and ‘NA’ to ‘NA_integer_’.

The second paragraph there explains the behaviour you are seeing, namely 5 == 1L and 5 == 0L respectively, which should both return FALSE, where as 1 == 1L and 0 == 0L should be TRUE for 1 == TRUE and 0 == FALSE respectively. I believe these are not testing what you want them to test; the comparison is on the basis of the numerical representation of TRUE and FALSE in R, i.e. what numeric values they take when coerced to numeric.

However, only TRUE is guaranteed to the be TRUE:

> isTRUE(TRUE)
[1] TRUE
> isTRUE(1)
[1] FALSE
> isTRUE(T)
[1] TRUE
> T <- 2
> isTRUE(T)
[1] FALSE

isTRUE is a wrapper for identical(x, TRUE), and from ?isTRUE we note:

Details:
....

     ‘isTRUE(x)’ is an abbreviation of ‘identical(TRUE, x)’, and so is
     true if and only if ‘x’ is a length-one logical vector whose only
     element is ‘TRUE’ and which has no attributes (not even names).

So by the same virtue, only FALSE is guaranteed to be exactly equal to FALSE.

> identical(F, FALSE)
[1] TRUE
> identical(0, FALSE)
[1] FALSE
> F <- "hello"
> identical(F, FALSE)
[1] FALSE

If this concerns you, always use isTRUE() or identical(x, FALSE) to check for equivalence with TRUE and FALSE respectively. == is not doing what you think it is.

Entire difference is, you don't get $this supplied inside the static function. If you try to use $this, you'll get a Fatal error: Using $this when not in object context.

Well, okay, one other difference: an E_STRICT warning is generated by your first example.

//simple function to determine if a number is a prime number
//to state if it is a prime number


#include <iostream>

using namespace std;


int isPrime(int x);  //functioned defined after int main()


int main()
{
 int y;
    cout<<"enter value"<<endl;

    cin>>y;

    isPrime(y);    

  return 0;

 } //end of main function


//-------------function

  int isPrime(int x)
 {
   int counter =0;
     cout<<"factors of "<<x<<" are "<<"\n\n";    //print factors of the number

     for (int i =0; i<=x; i++)

     {
       for (int j =0; j<=x; j++)

         {
           if (i * j == x)      //check if the number has multiples;
                {

                  cout<<i<<" ,  ";  //output provided for the reader to see the
                                    // muliples
                  ++counter;        //counts the number of factors

                 }


          }


    }
  cout<<"\n\n";

  if(counter>2) 
     { 
      cout<<"value is not a prime number"<<"\n\n";
     }

  if(counter<=2)
     {
       cout<<"value is a prime number"<<endl;
     }
 }

In Visual Studio 2010, right click the project, choose Properties, click the configuring properties section on the left pane, then click Debugging, then on the right pane there is a box for command arguments.

In that enter the command line arguments. You are good to go. Now debug and see the result. If you are tired of changing in the properties then temporarily give the input directly in the program.

If I may provide some historical context :

The term "slug" has to do with casting metal—lead, in this case—out of which the press fonts were made. Every paper then had its fonts factory regularly re-melted and recast in fresh molds, since after many prints they became worn out. Apprentices like me started their career there, and went all the way to the top (not anymore).

Typographs had to compose the text of an article in a backward manner with lead characters stacked in a wise. So at printing time the letters would be straight on the paper. All typographs could read the newspaper mirrored as fast as the printed one. Therefore the slugs, (like snails) also the slow stories (the last to be fixed) were many on the bench waiting, solely identified by their fist letters, mostly the whole title generally more readable. Some "hot" news were waiting there on the bench, for possible last minute correction, (Evening paper) before last assembly and definitive printing.

Django emerged from the offices of the Lawrence journal in Kansas. Where probably some printing jargon still lingers. A-django-enthusiast-&-friendly-old-slug-boy-from-France.

I don't think there is a markdown feature.

Though there may be other options available if you want to open links which point outside your own site automatically with JavaScript.

var links = document.links;

for (var i = 0, linksLength = links.length; i < linksLength; i++) {
   if (links[i].hostname != window.location.hostname) {
       links[i].target = '_blank';
   } 
}

jsFiddle.

If you're using jQuery it's a tad simpler...

$(document.links).filter(function() {
    return this.hostname != window.location.hostname;
}).attr('target', '_blank');

jsFiddle.

this work's for me with API v3 but with setting fixed zoom:

var bounds = new google.maps.LatLngBounds();
// extend bounds with each point

gmap.setCenter(bounds.getCenter()); 
gmap.setZoom( 6 );

In Java 8:

String[] strings = Arrays.stream(objects).toArray(String[]::new);

To convert an array of other types:

String[] strings = Arrays.stream(obj).map(Object::toString).
                   toArray(String[]::new);

This same warning will be emitted on any state changes done in a render() call.

An example of a tricky to find case: When rendering a multi-select GUI component based on state data, if state has nothing to display, a call to resetOptions() is considered state change for that component.

The obvious fix is to do resetOptions() in componentDidUpdate() instead of render().

SQL servers and MySQL, PostgreySQL, Oracle don't understand double quotes("). Thus your query should be free from double quotes(") and should only use single quotes(').

Back-trip(`) is optional to use in SQL and is used for table name, db name and column names.

If you are trying to write query in your back-end to call MySQL then you can use double quote(") or single quotes(') to assign query to a variable like:

let query = "select id, name from accounts";
//Or
let query = 'select id, name from accounts';

If ther's a where statement in your query and/or trying to insert a value and/or an update of value which is string use single quote(') for these values like:

let querySelect = "select id, name from accounts where name = 'John'";
let queryUpdate = "update accounts set name = 'John' where id = 8";
let queryInsert = "insert into accounts(name) values('John')";

//Please not that double quotes are only to be used in assigning string to our variable not in the query
//All these below will generate error

let querySelect = 'select id, name from accounts where name = "John"';
let queryUpdate = 'update accounts set name = "John" where id = 8';
let queryInsert = 'insert into accounts(name) values("John")';

//As MySQL or any SQL doesn't understand double quotes("), these all will generate error.

If you want to stay out of this confusion when to use double quotes(") and single quotes('), would recommend to stick with single quotes(') this will include backslash() like:

let query = 'select is, name from accounts where name = \'John\'';

Problem with double(") or single(') quotes arise when we had to assign some value dynamic and perform some string concatenation like:

let query = "select id, name from accounts where name = " + fName + " " + lName;
//This will generate error as it must be like name = 'John Smith' for SQL
//However our statement made it like name = John Smith

//In order to resolve such errors use
let query = "select id, name from accounts where name = '" + fName + " " + lName + "'";

//Or using backslash(\)
let query = 'select id, name from accounts where name = \'' + fName + ' ' + lName + '\'';

If need further clearance do follow quotes in JavaScript

To whoever also needs this problem solved:

Firstly, I grab my image with getElementByID, and save the image as a Base64. Then I save the Base64 string as my localStorage value.

bannerImage = document.getElementById('bannerImg');
imgData = getBase64Image(bannerImage);
localStorage.setItem("imgData", imgData);

Here is the function that converts the image to a Base64 string:

function getBase64Image(img) {
    var canvas = document.createElement("canvas");
    canvas.width = img.width;
    canvas.height = img.height;

    var ctx = canvas.getContext("2d");
    ctx.drawImage(img, 0, 0);

    var dataURL = canvas.toDataURL("image/png");

    return dataURL.replace(/^data:image\/(png|jpg);base64,/, "");
}

Then, on my next page I created an image with a blank src like so:

<img src="" id="tableBanner" />

And straight when the page loads, I use these next three lines to get the Base64 string from localStorage, and apply it to the image with the blank src I created:

var dataImage = localStorage.getItem('imgData');
bannerImg = document.getElementById('tableBanner');
bannerImg.src = "data:image/png;base64," + dataImage;

Tested it in quite a few different browsers and versions, and it seems to work quite well.

The site I like to use for this is codepoints.net

Here is a search for the words "arrowhead" and "triangle": https://codepoints.net/search?q=arrowhead+triangle

It has some matches for "triangle-headed arrow" that have stems, but it's only 4 small pages to skim over and there are many good matches with nice details on each character.

There is also a code block for "Miscellaneous Symbols and Arrows" and this website lists them here: https://codepoints.net/miscellaneous_symbols_and_arrows

Just thought I'd add my solution below, since the answers above did not meet my exact needs. My Xml schema required seperate Date and Time elements, not a singe DateTime field. The standard XMLGregorianCalendar constructor used above will generate a DateTime field

Note there a couple of gothca's, such as having to add one to the month (since java counts months from 0).

GregorianCalendar cal = new GregorianCalendar();
cal.setTime(yourDate);
XMLGregorianCalendar xmlDate = DatatypeFactory.newInstance().newXMLGregorianCalendarDate(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH)+1, cal.get(Calendar.DAY_OF_MONTH), 0);
XMLGregorianCalendar xmlTime = DatatypeFactory.newInstance().newXMLGregorianCalendarTime(cal.get(Calendar.HOUR_OF_DAY), cal.get(Calendar.MINUTE), cal.get(Calendar.SECOND), 0);

In my case, I needed to allow many inactives and only one combination of two keys active, like this:

UUL_USR_IDF  UUL_UND_IDF    UUL_ATUAL
137          18             0
137          19             0
137          20             1
137          21             0

This seems to work:

CREATE UNIQUE NONCLUSTERED INDEX UQ_USR_UND_UUL_USR_IDF_UUL_ATUAL
ON USER_UND(UUL_USR_IDF, UUL_ATUAL)
WHERE UUL_ATUAL = 1;

Here are my test cases:

SELECT * FROM USER_UND WHERE UUL_USR_IDF = 137

insert into USER_UND values (137, 22, 1) --I CAN NOT => Cannot insert duplicate key row in object 'dbo.USER_UND' with unique index 'UQ_USR_UND_UUL_USR_IDF_UUL_ATUAL'. The duplicate key value is (137, 1).
insert into USER_UND values (137, 23, 0) --I CAN
insert into USER_UND values (137, 24, 0) --I CAN

DELETE FROM USER_UND WHERE UUL_USR_ID = 137

insert into USER_UND values (137, 22, 1) --I CAN
insert into USER_UND values (137, 27, 1) --I CAN NOT => Cannot insert duplicate key row in object 'dbo.USER_UND' with unique index 'UQ_USR_UND_UUL_USR_IDF_UUL_ATUAL'. The duplicate key value is (137, 1).
insert into USER_UND values (137, 28, 0) --I CAN
insert into USER_UND values (137, 29, 0) --I CAN

np.fliplr() flips the array left to right.

Note that for 1d arrays, you need to trick it a bit:

arr1d = np.array(some_sequence)
reversed_arr = np.fliplr([arr1d])[0]

I was looking for a simple package that would do this very same task and did not find anything so I created https://github.com/gregnb/react-to-print

You can use it like so:

 <ReactToPrint
   trigger={() => <a href="#">Print this out!</a>}
   content={() => this.componentRef}
 />
 <ComponentToPrint ref={el => (this.componentRef = el)} />

$("#date").datepicker('getDate').getMonth() + 1; 

The month on the datepicker is 0 based (0-11), so add 1 to get the month as it appears in the date.

I had this error few days a go and I sped too many time on fixing this error.

 public boolean save(OrderHeader header) {
    Session session = sessionFactory.openSession();


    Transaction transaction = session.beginTransaction();

    try {
        session.save(header);

        for (OrderDetail detail : header.getDetails()) {
            session.save(detail);
        }

        transaction.commit();
        session.close();

        return true;
    } catch (HibernateException exception) {

        exception.printStackTrace();
        transaction.rollback();
        return false;
    }
}

Before i get this error , I didn't have mentioned ID generation type on the OrderDetil Object. when without generating Orderdetails' id it keeps Id as 0 for every OrderDetail objects. this what #jbx explained. Yes it is the best answer. this one example how it happens.

The two alternative you gave are semantically identical, but using make([]int, 0) will result in an internal call to runtime.makeslice (Go 1.14).

You also have the option to leave it with a nil value:

var myslice []int

As written in the Golang.org blog:

a nil slice is functionally equivalent to a zero-length slice, even though it points to nothing. It has length zero and can be appended to, with allocation.

A nil slice will however json.Marshal() into "null" whereas an empty slice will marshal into "[]", as pointed out by @farwayer.

None of the above options will cause any allocation, as pointed out by @ArmanOrdookhani.

I tried the following @janny loco's answer first and then reset anaconda to get it to work.

Step 1:

activate root
conda update -n root conda
conda update --all

Step 2:

anaconda-navigator --reset

After running the update commands in step 1 and not seeing any success, I reset anaconda by running the command above based on what I found here.

I am not sure if it was the combination of updating conda and reseting the navigator or just one of the two. So, please try accordingly.

Random random=new Random();
int randomNumber=(random.nextInt(65536)-32768);

Here is Kotlin version from @Andranik answer. We need to change getBytes to toByteArray (don't need to add charset UTF-8 because the default charset of toByteArray is UTF-8) and cast array[i] to integer

fun String.md5(): String? {
    try {
        val md = MessageDigest.getInstance("MD5")
        val array = md.digest(this.toByteArray())
        val sb = StringBuffer()
        for (i in array.indices) {
            sb.append(Integer.toHexString(array[i].toInt() and 0xFF or 0x100).substring(1, 3))
        }
        return sb.toString()
    } catch (e: java.security.NoSuchAlgorithmException) {
    } catch (ex: UnsupportedEncodingException) {
    }
    return null
}

Hope it help

After following the steps suggested by previous posters, do the following steps:

• Right click on the project
• Click Maven, then Update Project
• Tick the checkbox "Force Update of Snapshots/Releases", then click OK

You should be good to go now.

it seems that the OP meant to find out whether the string 'Mel' exists in a particular column, not contained in a column, therefore the use of contains is not needed, and is not efficient. A simple equals-to is enough:

(a['Names']=='Mel').any()

On Button click event write this:

Uri uri = Uri.parse("http://www.google.com"); // missing 'http://' will cause crashed
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);

that open the your URL.

See Android arsenal (category Graphics) for more libraries.

• AChartEngine
• AFreeChart
• AndroidCharts
• Androidplot
• DroidDiagram
• EazeGraph GraphView
• HoloGraphLibrary
• HzGrapher
• MPAndroidChart
• SciChart
• WilliamChart
• ChartProgressBar

For where field not empty this worked for me:

->where('table_name.field_name', '<>', '')

if(stop == true)

or

if(stop)

= is for assignment.

== is for checking condition.

if(stop = true) 

It will assign true to stop and evaluates if(true). So it will always execute the code inside if because stop will always being assigned with true.

I am working on an application in which we track live route. Passenger wants to show current position of driver and the expected arrival time to reach at his/her location. So I need to add some duration into current time.

So I found the below mentioned way to do the same. We can add any duration(hour,minutes and seconds) in our current time by moment:

var travelTime = moment().add(642, 'seconds').format('hh:mm A');// it will add 642 seconds in the current time and will give time in 03:35 PM format

var travelTime = moment().add(11, 'minutes').format('hh:mm A');// it will add 11 mins in the current time and will give time in 03:35 PM format; can use m or minutes 

var travelTime = moment().add(2, 'hours').format('hh:mm A');// it will add 2 hours in the current time and will give time in 03:35 PM format

It fulfills my requirement. May be it can help you.

Starting with IPython 5.0 and matplotlib 2.0 you can avoid the use of IPython’s specific magic and use matplotlib.pyplot.ion()/matplotlib.pyplot.ioff() which have the advantages of working outside of IPython as well.

ipython docs

I solved this problem using this command COMPOSER_MEMORY_LIMIT=-1

Example: COMPOSER_MEMORY_LIMIT=-1 composer requires larval/ui

You could try copying a shortcut to your application into the startup folder instead of adding things to the registry. You can get the path with Environment.SpecialFolder.Startup. This is available in all .net frameworks since 1.1.

Alternatively, maybe this site will be helpful to you, it lists a lot of the different ways you can get an application to auto-start.

You could rely on wget which usually handles ftp get properly (at least in my own experience). For example:

wget -r ftp://user:[email protected]/

You can also use -m which is suitable for mirroring. It is currently equivalent to -r -N -l inf.

If you've some special characters in the credential details, you can specify the --user and --password arguments to get it to work. Example with custom login with specific characters:

wget -r --user="user@login" --password="Pa$$wo|^D" ftp://server.com/

As pointed out by @asmaier, watch out that even if -r is for recursion, it has a default max level of 5:

-r
--recursive
    Turn on recursive retrieving.

-l depth
--level=depth
    Specify recursion maximum depth level depth.  The default maximum depth is 5.

If you don't want to miss out subdirs, better use the mirroring option, -m:

-m
--mirror
    Turn on options suitable for mirroring.  This option turns on recursion and time-stamping, sets infinite
    recursion depth and keeps FTP directory listings.  It is currently equivalent to -r -N -l inf
    --no-remove-listing.

I found dotnetperls examples on DataRow very helpful. Code snippet for new DataTable from there:

static DataTable GetTable()
{
    // Here we create a DataTable with four columns.
    DataTable table = new DataTable();
    table.Columns.Add("Weight", typeof(int));
    table.Columns.Add("Name", typeof(string));
    table.Columns.Add("Breed", typeof(string));
    table.Columns.Add("Date", typeof(DateTime));

    // Here we add five DataRows.
    table.Rows.Add(57, "Koko", "Shar Pei", DateTime.Now);
    table.Rows.Add(130, "Fido", "Bullmastiff", DateTime.Now);
    table.Rows.Add(92, "Alex", "Anatolian Shepherd Dog", DateTime.Now);
    table.Rows.Add(25, "Charles", "Cavalier King Charles Spaniel", DateTime.Now);
    table.Rows.Add(7, "Candy", "Yorkshire Terrier", DateTime.Now);

    return table;
}

Remove the existing precompiled files:

rm -rf  /Users/raghu/Library/Developer/Xcode/DerivedData/Solitare-fdaukpanamlzllacxvdzfbeqcrsg/

And try to build it again.

After reading through manny forums found a really easy solution.

I use redux-form. Urgo mapped redux-from fieldToClass. Upon error I navigate to the first error on the list of syncErrors.

No refs and no third party modules. Just simple querySelector & scrollIntoView

handleToScroll = (field) => {

    const fieldToClass = {
        'vehicleIdentifier': 'VehicleIdentifier',
        'locationTags': 'LocationTags',
        'photos': 'dropzoneContainer',
        'description': 'DescriptionInput',
        'clientId': 'clientId',
        'driverLanguage': 'driverLanguage',
        'deliveryName': 'deliveryName',
        'deliveryPhone': 'deliveryPhone',
        "deliveryEmail": 'deliveryEmail',
        "pickupAndReturn": "PickupAndReturn",
        "payInCash": "payInCash",
    }

document?.querySelector(`.${fieldToClasses[field]}`)
         .scrollIntoView({ behavior: "smooth" })

}

Doing it the mathy way...

nums = [1, 2, 3, 4, 5]
min_combo = (min(nums), max(nums))

Unless, of course, you have negatives in there. In that case, this won't work because you actually want the min and max absolute values - the numerator should be close to zero, and the denominator far from it, in either direction. And double negatives would break it.

For anyone that needs to set the EditText cursor color dynamically, below you will find two ways to achieve this.

First, create your cursor drawable:

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

    <solid android:color="#ff000000" />

    <size android:width="1dp" />

</shape>

Set the cursor drawable resource id to the drawable you created (https://github.com/android/platform_frameworks_base/blob/kitkat-release/core/java/android/widget/TextView.java#L562-564">source)):

try {
    Field f = TextView.class.getDeclaredField("mCursorDrawableRes");
    f.setAccessible(true);
    f.set(yourEditText, R.drawable.cursor);
} catch (Exception ignored) {
}

To just change the color of the default cursor drawable, you can use the following method:

public static void setCursorDrawableColor(EditText editText, int color) {
    try {
        Field fCursorDrawableRes = 
            TextView.class.getDeclaredField("mCursorDrawableRes");
        fCursorDrawableRes.setAccessible(true);
        int mCursorDrawableRes = fCursorDrawableRes.getInt(editText);
        Field fEditor = TextView.class.getDeclaredField("mEditor");
        fEditor.setAccessible(true);
        Object editor = fEditor.get(editText);
        Class<?> clazz = editor.getClass();
        Field fCursorDrawable = clazz.getDeclaredField("mCursorDrawable");
        fCursorDrawable.setAccessible(true);

        Drawable[] drawables = new Drawable[2];
        Resources res = editText.getContext().getResources();
        drawables[0] = res.getDrawable(mCursorDrawableRes);
        drawables[1] = res.getDrawable(mCursorDrawableRes);
        drawables[0].setColorFilter(color, PorterDuff.Mode.SRC_IN);
        drawables[1].setColorFilter(color, PorterDuff.Mode.SRC_IN);
        fCursorDrawable.set(editor, drawables);
    } catch (final Throwable ignored) {
    }
}

You should be able to add:

restart: always 

to every service you want to restart in the docker-compose.yml file.

See: https://github.com/compose-spec/compose-spec/blob/master/spec.md#restart

Create custom_selector.xml in drawable folder

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
   <item android:drawable="@drawable/unselected" android:state_pressed="true" />
   <item android:drawable="@drawable/selected" />
</selector>

Create selected.xml shape in drawable folder

<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle" android:padding="90dp">
   <solid android:color="@color/selected"/>
   <padding />
   <stroke android:color="#000" android:width="1dp"/>
   <corners android:bottomRightRadius="15dp" android:bottomLeftRadius="15dp" android:topLeftRadius="15dp" android:topRightRadius="15dp"/>
</shape>

Create unselected.xml shape in drawable folder

<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle" android:padding="90dp">
   <solid android:color="@color/unselected"/>
   <padding />
   <stroke android:color="#000" android:width="1dp"/>
   <corners android:bottomRightRadius="15dp" android:bottomLeftRadius="15dp" android:topLeftRadius="15dp" android:topRightRadius="15dp"/>
</shape>

Add following colors for selected/unselected state in color.xml of values folder

<color name="selected">#a8cf45</color>
<color name="unselected">#ff8cae3b</color>

you can check complete solution from here

The ":PATH" part in the accepted answer can be omitted. This syntax may be more memorable:

cmake -DCMAKE_INSTALL_PREFIX=/usr . && make all install

...as used in the answers here.

Either the parameter supplied for ZIP_CODE is larger (in length) than ZIP_CODEs column width or the parameter supplied for CITY is larger (in length) than CITYs column width.

It would be interesting to know the values supplied for the two ? placeholders.

int c;
    String raw = "";
    do {
        c = inputstream.read();
        raw+=(char)c;
    } while(inputstream.available()>0);

InputStream.available() shows the available bytes only after one byte is read, hence do .. while

Check out this library: https://github.com/robfig/cron

Example as below:

c := cron.New()
c.AddFunc("0 30 * * * *", func() { fmt.Println("Every hour on the half hour") })
c.AddFunc("@hourly",      func() { fmt.Println("Every hour") })
c.AddFunc("@every 1h30m", func() { fmt.Println("Every hour thirty") })
c.Start()

The below function would return '0' if there is no match and a 'positive integer' in case of matching:

Function IsInArray(stringToBeFound As String, arr As Variant) As Integer IsInArray = InStr(Join(arr, ""), stringToBeFound) End Function ______________________________________________________________________________

Note: the function first concatenates the entire array content to a string using 'Join' (not sure if the join method uses looping internally or not) and then checks for a macth within this string using InStr.

use plt.figure(dpi=1200) before all your plt.plot... and at the end use plt.savefig(... see: http://matplotlib.org/api/pyplot_api.html#matplotlib.pyplot.figure and http://matplotlib.org/api/pyplot_api.html#matplotlib.pyplot.savefig

You can try something like this. Here on click of image button I toggle the imageview.

holder.imgitem.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View view) {
            if(!onclick){
            mSparseBooleanArray.put((Integer) view.getTag(), true);
            holder.imgoverlay.setImageResource(R.drawable.ipad_768x1024_editmode_delete_overlay_com);
            onclick=true;}
            else if(onclick)
            {
                 mSparseBooleanArray.put((Integer) view.getTag(), false);
                  holder.imgoverlay.setImageResource(R.drawable.ipad_768x1024_editmode_selection_com);

            onclick=false;
            }
        }
    });

There's no right answer to this question. I really depends on what you're doing with the data. In the simple example above, I would strongly suggest:

1. Keep things as simple as possible.
2. Wherever possible, it's a best practice to keep your functions vectorized. That provides the greatest amount of flexibility and speed in the long run.

Is it important that the values 1 and 2 above have names? In other words, why is it important in this example that 1 and 2 be named a and b, rather than just r[1] and r[2]? One important thing to understand in this context is that a and b are also both vectors of length 1. So you're not really changing anything in the process of making that assignment, other than having 2 new vectors that don't need subscripts to be referenced:

> r <- c(1,2)
> a <- r[1]
> b <- r[2]
> class(r)
[1] "numeric"
> class(a)
[1] "numeric"
> a
[1] 1
> a[1]
[1] 1

You can also assign the names to the original vector if you would rather reference the letter than the index:

> names(r) <- c("a","b")
> names(r)
[1] "a" "b"
> r["a"]
a 
1 

[Edit] Given that you will be applying min and max to each vector separately, I would suggest either using a matrix (if a and b will be the same length and the same data type) or data frame (if a and b will be the same length but can be different data types) or else use a list like in your last example (if they can be of differing lengths and data types).

> r <- data.frame(a=1:4, b=5:8)
> r
  a b
1 1 5
2 2 6
3 3 7
4 4 8
> min(r$a)
[1] 1
> max(r$b)
[1] 8

You could try passing a callback function to perform the replacement:

var tagsToReplace = {
    '&': '&',
    '<': '&lt;',
    '>': '&gt;'
};

function replaceTag(tag) {
    return tagsToReplace[tag] || tag;
}

function safe_tags_replace(str) {
    return str.replace(/[&<>]/g, replaceTag);
}

Here is a performance test: http://jsperf.com/encode-html-entities to compare with calling the replace function repeatedly, and using the DOM method proposed by Dmitrij.

Your way seems to be faster...

Why do you need it, though?

Any of the below three options works for you:

echo[

echo(

echo. 

For example:

@echo off
echo There will be a blank line below
echo[
echo Above line is blank
echo( 
echo The above line is also blank.
echo. 
echo The above line is also blank.

Try something like this:

df.select([c for c in df.columns if c in ['_2','_4','_5']]).show()

Its not ideal but you can use a proxy server and it works fine. For example go to hidemyass.com put in www.google.com and put the link it goes to in an iframe and it works!

eval is not an acceptable practice if your directory names can be generated by untrusted sources. See BashFAQ #48 for more on why eval should not be used, and BashFAQ #50 for more on the root cause of this problem and its proper solutions, some of which are touched on below:

If you need to build up your commands over time, use arrays:

tar_cmd=( tar cv "$directory" )
split_cmd=( split -b 1024m - "$backup_file" )
encrypt_cmd=( openssl des3 -salt )
"${tar_cmd[@]}" | "${encrypt_cmd[@]}" | "${split_cmd[@]}"

Alternately, if this is just about defining your commands in one central place, use functions:

tar_cmd() { tar cv "$directory"; }
split_cmd() { split -b 1024m - "$backup_file"; }
encrypt_cmd() { openssl des3 -salt; }
tar_cmd | split_cmd | encrypt_cmd

Xml tag arrangement in Web.config is important

First

<configSections>
    <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
</configSections>

After

<connectionStrings>
  <add name="SqlConnectionString" connectionString="Data Source=.; Initial Catalog=TestDB; Trusted_Connection=True;" providerName="System.Data.SqlClient" />
</connectionStrings>

You shouldn't need to let the users specify the margin on your website - Let them do it on their computer. Print dialogs usually (Adobe and Preview, at least) give you an option to scale and center the output on the printable area of the page:

Adobe

Preview

Of course, this assumes that you have computer literate users, which may or may not be the case.

According to 'Getting Started With LLVM Core Libraries' book (c):

In fact, the name LLVM might refer to any of the following:

• The LLVM project/infrastructure: This is an umbrella for several projects that, together, form a complete compiler: frontends, backends, optimizers, assemblers, linkers, libc++, compiler-rt, and a JIT engine. The word "LLVM" has this meaning, for example, in the following sentence: "LLVM is comprised of several projects".

• An LLVM-based compiler: This is a compiler built partially or completely with the LLVM infrastructure. For example, a compiler might use LLVM for the frontend and backend but use GCC and GNU system libraries to perform the final link. LLVM has this meaning in the following sentence, for example: "I used LLVM to compile C programs to a MIPS platform".

• LLVM libraries: This is the reusable code portion of the LLVM infrastructure. For example, LLVM has this meaning in the sentence: "My project uses LLVM to generate code through its Just-in-Time compilation framework".

• LLVM core: The optimizations that happen at the intermediate language level and the backend algorithms form the LLVM core where the project started. LLVM has this meaning in the following sentence: "LLVM and Clang are two different projects".

• The LLVM IR: This is the LLVM compiler intermediate representation. LLVM has this meaning when used in sentences such as "I built a frontend that translates my own language to LLVM".

According to Visa's "Card Acceptance and Chargeback Management Guidelines for Visa Merchants"; "Good Thru" (or "Valid Thru") Date is the expiration date of the card:

A card is valid through the last day of the month shown, (e .g ., if the Good Thru date is 03/12,the card is valid through March 31, 2012 and expires on April 1, 2012 .)

It is located below the embossed account number. If the current transaction date is after the "Good Thru" date, the card has expired.

The solution from Edward worked for me.

If you want the whole tablix on one sheet with a constant name, specify the PageName in the tablix's Properties. If you set the PageName in the tablix's Properties, you can not use data from the tablix's dataset in your expression.

If you want rows from the tablix grouped into sheets (or you want one sheet with a name based on the data), specify the PageName in the Group Header.

@ImportanceOfBeingErnest 's answer is good if you only want to change the linewidth inside the legend box. But I think it is a bit more complex since you have to copy the handles before changing legend linewidth. Besides, it can not change the legend label fontsize. The following two methods can not only change the linewidth but also the legend label text font size in a more concise way.

Method 1

import numpy as np
import matplotlib.pyplot as plt

# make some data
x = np.linspace(0, 2*np.pi)

y1 = np.sin(x)
y2 = np.cos(x)

# plot sin(x) and cos(x)
fig = plt.figure()
ax  = fig.add_subplot(111)
ax.plot(x, y1, c='b', label='y1')
ax.plot(x, y2, c='r', label='y2')

leg = plt.legend()
# get the individual lines inside legend and set line width
for line in leg.get_lines():
    line.set_linewidth(4)
# get label texts inside legend and set font size
for text in leg.get_texts():
    text.set_fontsize('x-large')

plt.savefig('leg_example')
plt.show()

Method 2

import numpy as np
import matplotlib.pyplot as plt

# make some data
x = np.linspace(0, 2*np.pi)

y1 = np.sin(x)
y2 = np.cos(x)

# plot sin(x) and cos(x)
fig = plt.figure()
ax  = fig.add_subplot(111)
ax.plot(x, y1, c='b', label='y1')
ax.plot(x, y2, c='r', label='y2')

leg = plt.legend()
# get the lines and texts inside legend box
leg_lines = leg.get_lines()
leg_texts = leg.get_texts()
# bulk-set the properties of all lines and texts
plt.setp(leg_lines, linewidth=4)
plt.setp(leg_texts, fontsize='x-large')
plt.savefig('leg_example')
plt.show()

The above two methods produce the same output image:

If you want to delete a range AFTER a specific line trigger you can use something like this

:g/^TMPDIR/ :.,+11d

That deletes 11 lines (inclusive) after every encounter of ^TMPDIR.

Its so simple using core javascript + angular js:

$scope.delete = function(id) 
    { 
       if (confirm("Are you sure?"))
           {
                //do your process of delete using angular js.
           }
   }

If you click OK, then delete operation will take, otherwise not. * id is the parameter, record that you want to delete.

Since Spring Boot v2+

I have verified with Spring Boot v2.3.5.RELEASE

With Spring Boot Maven Plugin

You can provide commandline argument like this:

mvn spring-boot:run -Dspring-boot.run.arguments="--spring.profiles.active=dev"

You can provide JVM argument like this:

mvn spring-boot:run -Dspring-boot.run.jvmArguments="-Dspring.profiles.active=dev"

java -jar

java -Dspring.profiles.active=dev -jar app.jar (Note order)

or

java -jar app.jar --spring.profiles.active=dev (Note order)

The answer with the method count() above gave me line miscounts if a file didn't have a newline at the end of the file - it failed to count the last line in the file.

This method works better for me:

public int countLines(String filename) throws IOException {
    LineNumberReader reader  = new LineNumberReader(new FileReader(filename));
int cnt = 0;
String lineRead = "";
while ((lineRead = reader.readLine()) != null) {}

cnt = reader.getLineNumber(); 
reader.close();
return cnt;
}

If the below line is not available or commented in C:\xampp\php\php.ini, then add it or uncomment and restart the apache server then it works.

extension=php_intl.dll

When you have a lot of variables that don't need escaping, you can use an autoescape block:

{% autoescape off %}
{{ something }}
{{ something_else }}
<b>{{ something_important }}</b>
{% endautoescape %}

You can try something like this

IFNULL(NULLIF(X, '' ), 0)

Attribute X is assumed to be empty if it is an empty String, so after that you can declare as a zero instead of last value. In another case, it would remain its original value.

Anyway, just to give another way to do that.

If you were asking from the perspective of working this out with a running program then you need to look to the java.lang.* package. If you get a Class object, you can use the isAssignableFrom method to check if it is an interface of another Class.

There isn't a simple built in way of searching for these, tools like Eclipse build an index of this information.

If you don't have a specific list of Class objects to test you can look to the ClassLoader object, use the getPackages() method and build your own package hierarchy iterator.

Just a warning though that these methods and classes can be quite slow.

If the blob is instantiated with data from an F4M manifest (check the Network Tab in Chrome's Developer Tools), you can download the video file using the php script posted here: https://n1njahacks.wordpress.com/2015/01/29/how-to-save-hds-flash-streams-from-any-web-page/

By putting:

  if ($manifest == '')
    $manifest = $_GET['manifest'];

before:

  if ($manifest)

you could even run it on a webserver, using requests with the query string: ?manifest=[manifest url].

Note that you'll probably want to use an FTP client to retrieve the downloaded video file and clean up after the script (it leaves all the downloaded video parts).

Java FX has Media and MediaPlayer classes which will play mp3 files.

Example code:

String bip = "bip.mp3";
Media hit = new Media(new File(bip).toURI().toString());
MediaPlayer mediaPlayer = new MediaPlayer(hit);
mediaPlayer.play();

You will need the following import statements:

import java.io.File;
import javafx.scene.media.Media;
import javafx.scene.media.MediaPlayer;

If your structure should be like this:

/assets/html/index.html

/assets/scripts/index.js

/assets/css/index.css

Then just do ( Android WebView: handling orientation changes )

    if(WebViewStateHolder.INSTANCE.getBundle() == null) { //this works only on single instance of webview, use a map with TAG if you need more
        webView.loadUrl("file:///android_asset/html/index.html");
    } else {
        webView.restoreState(WebViewStateHolder.INSTANCE.getBundle());
    }

Make sure you add

    WebSettings webSettings = webView.getSettings();
    webSettings.setJavaScriptEnabled(true);
    webSettings.setJavaScriptCanOpenWindowsAutomatically(true);
    if(android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN) {
        webSettings.setAllowFileAccessFromFileURLs(true);
        webSettings.setAllowUniversalAccessFromFileURLs(true);
    }

Then just use urls

<html>
<head>
    <meta charset="utf-8">
    <title>Zzzz</title>
    <script src="../scripts/index.js"></script>
    <link rel="stylesheet" type="text/css" href="../css/index.css">

input[type="text"]
{
    width:200px
}

Any of the following should work!!

df <- data.frame(x=1:3,y=4:6)

mean(df$x)
mean(df[,1])
mean(df[["x"]])

Using ES6, you can have user.js:

export default class User {
  constructor() {
    ...
  }
}

And then use it in server.js

const User = require('./user.js').default;
const user = new User();

Code:

while ($rows = mysql_fetch_array($query)):
       $name = $rows['Name'];
       $address = $rows['Address'];
       $email = $rows['Email'];
       $subject = $rows['Subject'];
       $comment = $rows['Comment']
       echo "$name<br>$address<br>$email<br>$subject<br>$comment<br><br>";
endwhile;

Best way is to use a function:

#include <map>

using namespace std;

map<int,int> create_map()
{
  map<int,int> m;
  m[1] = 2;
  m[3] = 4;
  m[5] = 6;
  return m;
}

map<int,int> m = create_map();

We can use Stack and push "i" into the stack every time we encounter the condition "arr[i]==value"

Check this:

static void getindex(int arr[], int value)
{
    Stack<Integer>st= new Stack<Integer>();
    int n= arr.length;
    for(int i=n-1; i>=0 ;i--)
    {
        if(arr[i]==value)
        {
            st.push(i);
        }
    }   
    while(!st.isEmpty())
    {
        System.out.println(st.peek()+" ");
        st.pop(); 
    }
}

The Date object will do what you want - construct one for each date, then compare them using the >, <, <= or >=.

The ==, !=, ===, and !== operators require you to use date.getTime() as in

var d1 = new Date();
var d2 = new Date(d1);
var same = d1.getTime() === d2.getTime();
var notSame = d1.getTime() !== d2.getTime();

to be clear just checking for equality directly with the date objects won't work

var d1 = new Date();
var d2 = new Date(d1);

console.log(d1 == d2);   // prints false (wrong!) 
console.log(d1 === d2);  // prints false (wrong!)
console.log(d1 != d2);   // prints true  (wrong!)
console.log(d1 !== d2);  // prints true  (wrong!)
console.log(d1.getTime() === d2.getTime()); // prints true (correct)

I suggest you use drop-downs or some similar constrained form of date entry rather than text boxes, though, lest you find yourself in input validation hell.

On your user model just add a 'hasRole' method like below

public boolean hasRole(String auth) {
    for (Role role : roles) {
        if (role.getName().equals(auth)) { return true; }
    }
    return false;
}

I usually use it to check if the authenticated user has the role admin as follows

Authentication authentication = SecurityContextHolder.getContext().getAuthentication(); // This gets the authentication
User authUser = (User) authentication.getPrincipal(); // This gets the logged in user
authUser.hasRole("ROLE_ADMIN") // This returns true or false

In the simplest case, it's probably sufficient to "cast" the array as an object:

$object = (object) $array;

Another option would be to instantiate a standard class as a variable, and loop through your array while re-assigning the values:

$object = new stdClass();
foreach ($array as $key => $value)
{
    $object->$key = $value;
}

As Edson Medina pointed out, a really clean solution is to use the built-in json_ functions:

$object = json_decode(json_encode($array), FALSE);

This also (recursively) converts all of your sub arrays into objects, which you may or may not want. Unfortunately it has a 2-3x performance hit over the looping approach.

Warning! (thanks to Ultra for the comment):

json_decode on different enviroments converts UTF-8 data in different ways. I end up getting on of values '240.00' locally and '240' on production - massive dissaster. Morover if conversion fails string get's returned as NULL

For those looking for a complete example check out http://www.exchangecore.com/blog/how-use-ldap-active-directory-authentication-php/.

I have tested this connecting to both Windows Server 2003 and Windows Server 2008 R2 domain controllers from a Windows Server 2003 Web Server (IIS6) and from a windows server 2012 enterprise running IIS 8.

If you want to create and copy the content in a single shot, just use the SELECT:

CREATE TABLE new_tbl SELECT * FROM orig_tbl;

import cgitb
cgitb.enable()

import cgi
print "Content-Type: text/plain;charset=utf-8"
print
form = cgi.FieldStorage()
i = int(form.getvalue('a'))+int(form.getvalue('b'))
print i

Put content from other site in iframe

<iframe src="/othersiteurl" width="100%" height="300">
  <p>Your browser does not support iframes.</p>
</iframe>

Update: JUnit5 has an improvement for exceptions testing: assertThrows.

The following example is from: Junit 5 User Guide

 @Test
void exceptionTesting() {
    Throwable exception = assertThrows(IllegalArgumentException.class, () -> 
    {
        throw new IllegalArgumentException("a message");
    });
    assertEquals("a message", exception.getMessage());
}

Original answer using JUnit 4.

There are several ways to test that an exception is thrown. I have also discussed the below options in my post How to write great unit tests with JUnit

Set the expected parameter @Test(expected = FileNotFoundException.class).

@Test(expected = FileNotFoundException.class) 
public void testReadFile() { 
    myClass.readFile("test.txt");
}

Using try catch

public void testReadFile() { 
    try {
        myClass.readFile("test.txt");
        fail("Expected a FileNotFoundException to be thrown");
    } catch (FileNotFoundException e) {
        assertThat(e.getMessage(), is("The file test.txt does not exist!"));
    }
     
}

Testing with ExpectedException Rule.

@Rule
public ExpectedException thrown = ExpectedException.none();

@Test
public void testReadFile() throws FileNotFoundException {
    
    thrown.expect(FileNotFoundException.class);
    thrown.expectMessage(startsWith("The file test.txt"));
    myClass.readFile("test.txt");
}

You could read more about exceptions testing in JUnit4 wiki for Exception testing and bad.robot - Expecting Exceptions JUnit Rule.

The Basics

Look at these to build a solution more or less from scratch:

• Start from the basics: The Java Tutorial's chapter on Networking, including Working With URLs
• Make things easier for yourself: Apache HttpComponents (including HttpClient)

The Easily Glued-Up and Stitched-Up Stuff

You always have the option of calling external tools from Java using the exec() and similar methods. For instance, you could use wget, or cURL.

The Hardcore Stuff

Then if you want to go into more fully-fledged stuff, thankfully the need for automated web-testing as given us very practical tools for this. Look at:

• HtmlUnit (powerful and simple)
• Selenium, Selenium-RC
• WebDriver/Selenium2 (still in the works)
• JBehave with JBehave Web

Some other libs are purposefully written with web-scraping in mind:

• JSoup
• Jaunt

Some Workarounds

Java is a language, but also a platform, with many other languages running on it. Some of which integrate great syntactic sugar or libraries to easily build scrapers.

Check out:

• Groovy (and its XmlSlurper)
• or Scala (with great XML support as presented here and here)

If you know of a great library for Ruby (JRuby, with an article on scraping with JRuby and HtmlUnit) or Python (Jython) or you prefer these languages, then give their JVM ports a chance.

Some Supplements

Some other similar questions:

• Scrape data from HTML using Java
• Options for HTML Scraping

or Just %~F will give you the full path and full file name.

For example, if you want to register all *.ax files in the current directory....

FOR /R C:. %F in (*.ax) do regsvr32 "%~F"

This works quite nicely in Win7 (64bit) :-)

I had a similar issue today where only the prompt was available after installation. Finally solved this by un-installing my regular python installation and then install anaconda(anaconda 3 v5.2.0, with python 3.6).

Make sure you have ipykernel installed and use ipython kernel install to drop the kernelspec in the right location for python2. Then ipython3 kernel install for Python3. Now you should be able to chose between the 2 kernels regardless of whether you use jupyter notebook, ipython notebook or ipython3 notebook (the later two are deprecated).

Note that if you want to install for a specific Python executable you can use the following trick:

path/to/python -m ipykernel install <options>

This works when using environments (venv,conda,...) and the <options> let you name your kernel (see --help). So you can do

conda create -n py36-test python=3.6
source activate py36-test
python -m ipykernel install --name py36-test
source deactivate

And now you get a kernel named py36-test in your dropdown menus, along the other ones.

See Using both Python 2.x and Python 3.x in IPython Notebook which has more recent information.

(I think the id attribute needs to start with a letter. Could be wrong.)

You could go for event delegation...

<div onClick="reply_click()">
    <button id="1"></button>
    <button id="2"></button>
    <button id="3"></button>
</div>

function reply_click(e) {
    e = e || window.event;
    e = e.target || e.srcElement;
    if (e.nodeName === 'BUTTON') {
        alert(e.id);
    }
}

...but that requires you to be relatively comfortable with the wacky event model.

This worked for me. const clear = (event) =>{event.target.value = [ ];} clear("input_id");

I´ve found two problems with your Fiddle, one of the problems is first in Zeta´s answer.

the method is not toDataUrl(); is toDataURL(); and you forgot to store the canvas in your variable.

So the Fiddle now works fine http://jsfiddle.net/gfyWK/12/

I hope this helps!

Use the "$" on a reg expression to match the end of the string

$string = 'The quick brown fox jumps over the lazy fox';
echo preg_replace('/fox$/', 'dog', $string);

//output
'The quick brown fox jumps over the lazy dog'

GitHub suggests that you should make sure to only use \n as a newline character in git-handled repos. There's an option to auto-convert:

$ git config --global core.autocrlf true

Of course, this is said to convert crlf to lf, while you want to convert cr to lf. I hope this still works …

And then convert your files:

# Remove everything from the index
$ git rm --cached -r .

# Re-add all the deleted files to the index
# You should get lots of messages like: "warning: CRLF will be replaced by LF in <file>."
$ git diff --cached --name-only -z | xargs -0 git add

# Commit
$ git commit -m "Fix CRLF"

core.autocrlf is described on the man page.

Try this code.

public void send (String fileName) {
    String SFTPHOST = "host:IP";
    int SFTPPORT = 22;
    String SFTPUSER = "username";
    String SFTPPASS = "password";
    String SFTPWORKINGDIR = "file/to/transfer";

    Session session = null;
    Channel channel = null;
    ChannelSftp channelSftp = null;
    System.out.println("preparing the host information for sftp.");

    try {
        JSch jsch = new JSch();
        session = jsch.getSession(SFTPUSER, SFTPHOST, SFTPPORT);
        session.setPassword(SFTPPASS);
        java.util.Properties config = new java.util.Properties();
        config.put("StrictHostKeyChecking", "no");
        session.setConfig(config);
        session.connect();
        System.out.println("Host connected.");
        channel = session.openChannel("sftp");
        channel.connect();
        System.out.println("sftp channel opened and connected.");
        channelSftp = (ChannelSftp) channel;
        channelSftp.cd(SFTPWORKINGDIR);
        File f = new File(fileName);
        channelSftp.put(new FileInputStream(f), f.getName());
        log.info("File transfered successfully to host.");
    } catch (Exception ex) {
        System.out.println("Exception found while tranfer the response.");
    } finally {
        channelSftp.exit();
        System.out.println("sftp Channel exited.");
        channel.disconnect();
        System.out.println("Channel disconnected.");
        session.disconnect();
        System.out.println("Host Session disconnected.");
    }
}   

def x(a):
    print(a)
    return a

def y(a):
    return a

y(x(1))

Here is a script based on Yavuz Sert's answer. It deletes all tags that are not the latest version, and their tag is greater than 950.

#!/usr/bin/env bash


CheckTag(){
    Name=$1
    Tag=$2

    Skip=0
    if [[ "${Tag}" == "latest" ]]; then
        Skip=1
    fi
    if [[ "${Tag}" -ge "950" ]]; then
        Skip=1
    fi
    if [[ "${Skip}" == "1" ]]; then
        echo "skip ${Name} ${Tag}"
    else
        echo "delete ${Name} ${Tag}"
        Sha=$(curl -v -s -H "Accept: application/vnd.docker.distribution.manifest.v2+json" -X GET http://127.0.0.1:5000/v2/${Name}/manifests/${Tag} 2>&1 | grep Docker-Content-Digest | awk '{print ($3)}')
        Sha="${Sha/$'\r'/}"
        curl -H "Accept: application/vnd.docker.distribution.manifest.v2+json" -X DELETE "http://127.0.0.1:5000/v2/${Name}/manifests/${Sha}"
    fi
}

ScanRepository(){
    Name=$1
    echo "Repository ${Name}"
    curl -s http://127.0.0.1:5000/v2/${Name}/tags/list | jq '.tags[]' |
    while IFS=$"\n" read -r line; do
        line="${line%\"}"
        line="${line#\"}"
        CheckTag $Name $line
    done
}


JqPath=$(which jq)
if [[ "x${JqPath}" == "x" ]]; then
  echo "Couldn't find jq executable."
  exit 2
fi

curl -s http://127.0.0.1:5000/v2/_catalog | jq '.repositories[]' |
while IFS=$"\n" read -r line; do
    line="${line%\"}"
    line="${line#\"}"
    ScanRepository $line
done

Yes - it means you're using \n as the line break instead of \r\n. Notepad only understands the latter.

(Note that Environment.NewLine suggested by others is fine if you want the platform default - but if you're serving from Mono and definitely want \r\n, you should specify it explicitly.)

apache-tomcat-8.0.33

If you want to enable debug logging in tomcat for TLD scanned jars then you have to change /conf/logging.properties file in tomcat directory.

uncomment the line :
org.apache.jasper.servlet.TldScanner.level = FINE

FINE level is for debug log.

This should work for normal tomcat.

If the tomcat is running under eclipse. Then you have to set the path of tomcat logging.properties in eclipse.

1. Open servers view in eclipse.Stop the server.Double click your tomcat server.
   This will open Overview window for the server.
2. Click on Open launch configuration.This will open another window.
3. Go to the Arguments tab(second tab).Go to VM arguments section.
4. paste this two line there :-
   -Djava.util.logging.config.file="{CATALINA_HOME}\conf\logging.properties"
   -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
   Here CATALINA_HOME is your PC's corresponding tomcat server directory.
5. Save the Changes.Restart the server.

Now the jar files that scanned for TLDs should show in the log.

The following method should work via Command Prompt (cmd):

start microsoft-edge:http://www.cnn.com

If the starting cell of the range and of the key is static, the solution can be very simple:

Range("A3").Select
Range(Selection, Selection.End(xlToRight)).Select
Range(Selection, Selection.End(xlDown)).Select
Selection.Sort key1:=Range("B3", Range("B3").End(xlDown)), _
order1:=xlAscending, Header:=xlNo

No, there is no built-in support for number formatting, but googling will turn up loads of code snippets that will do this for you.

EDIT: I missed the last sentence of your post. Try http://code.google.com/p/jquery-utils/wiki/StringFormat for a jQuery solution.

Use properties file. Here is a good start: http://www.mkyong.com/java/java-properties-file-examples/

You can wrap it in your own function:

function isNullAndUndef(variable) {

    return (variable !== null && variable !== undefined);
}

You can search for the key and with the help of the key you can find the associated value of the map as map has unique key, see what happens when key is duplicate here or here.

Demo map :

 Map<String, String> map = new HashMap();
  map.put("name", "Badri Paudel");
  map.put("age", "23");
  map.put("address", "KTM");
  map.put("faculty", "BE");
  map.put("major", "CS");
  map.put("head", "AVD");
 

To get key only, you can use map.keySet(); like this :

for(String key : map.keySet()) {
      System.out.println(key);
  }

To get value only , you can use map.values(); like this:

      for(String value : map.values()) {
      System.out.println(value);
  }

To get both key and its value you still can use map.keySet(); and get its corresponding value, like this :

 //this prints the key value pair
  for (String k : map.keySet()) {
        System.out.println(k + " " + map.get(k) + " ");
    }

map.get(key) gives the value pointed by that key.

public static string NumberToWords(int number)
{
    if (number == 0)
        return "zero";

    if (number < 0)
        return "minus " + NumberToWords(Math.Abs(number));

    string words = "";

    if ((number / 1000000) > 0)
    {
        words += NumberToWords(number / 1000000) + " million ";
        number %= 1000000;
    }

    if ((number / 1000) > 0)
    {
        words += NumberToWords(number / 1000) + " thousand ";
        number %= 1000;
    }

    if ((number / 100) > 0)
    {
        words += NumberToWords(number / 100) + " hundred ";
        number %= 100;
    }

    if (number > 0)
    {
        if (words != "")
            words += "and ";

        var unitsMap = new[] { "zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen" };
        var tensMap = new[] { "zero", "ten", "twenty", "thirty", "forty", "fifty", "sixty", "seventy", "eighty", "ninety" };

        if (number < 20)
            words += unitsMap[number];
        else
        {
            words += tensMap[number / 10];
            if ((number % 10) > 0)
                words += "-" + unitsMap[number % 10];
        }
    }

    return words;
}

After a full day of search, I disabled Avast for 10 minutes and Windows Firewall (important) and everything started working!

This was my error:

Mail server connection failed; nested exception is javax.mail.MessagingException: Could not convert socket to TLS; nested exception is: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Failed messages: javax.mail.MessagingException: Could not convert socket to TLS; nested exception is: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target  

Here is how to fix the issue in Avast 19.8.2393 by adding an exclusion to SMTP port 587 (or whichever port your application uses):

1. Open Avast

2. Click on 'Settings'

3. Click on 'Troubleshooting' and then 'Open old settings'

4. Click again on 'Troubleshooting', scroll down to 'Redirect settings' and delete the port that your app uses.

In my case, I just removed 587 from SMTP ports.

Now I am able to use Avast and also have my Windows Firewall switched on (no need to add additional exclusion for the Firewall).

Here are my application.properties e-mail properties:

###### I am using a Google App Password which I generated in my Gmail Security settings ######
spring.mail.host = smtp.gmail.com
spring.mail.port = 587
spring.mail.protocol = smtp
spring.mail.username = gmail account
spring.mail.password = password
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtp.connectiontimeout=5000
spring.mail.properties.mail.smtp.timeout=5000
spring.mail.properties.mail.smtp.writetimeout=5000

This will give you a list of a single group, and the members of each group.

param
(   
    [Parameter(Mandatory=$true,position=0)]
    [String]$GroupName
)

import-module activedirectory

# optional, add a wild card..
# $groups = $groups + "*"

$Groups = Get-ADGroup -filter {Name -like $GroupName} | Select-Object Name

ForEach ($Group in $Groups)
   {write-host " "
    write-host "$($group.name)"
    write-host "----------------------------"

    Get-ADGroupMember -identity $($groupname) -recursive | Select-Object samaccountname

 }
write-host "Export Complete"

If you want the friendly name, or other details, add them to the end of the select-object query.

To get the list of server and instance that you're connected to:

select * from Sys.Servers

To get the list of databases that connected server has:

SELECT * from sys.databases;

For Windows

pip install mysql-connector

For Ubuntu /Linux

sudo apt-get install python3-pymysql

You can only type them manually, but the content assist helps you there, so it is pretty easy.

Add this line

<uses-permission android:name="android.permission."/> 

and hit ctrl + space after the dot (or cmd + space on Mac). If you need an explanation for the permission, you can hit ctrl + q.

As an extra, you can take the Enum.Parse answers already provided and put them in an easy-to-use static method in a helper class.

public static T ParseEnum<T>(string value)
{
    return (T)Enum.Parse(typeof(T), value, ignoreCase: true);
}

And use it like so:

{
   Content = ParseEnum<ContentEnum>(fileContentMessage);
};

Especially helpful if you have lots of (different) Enums to parse.

I would just use get_the_post_thumbnail_url() instead of get_the_post_thumbnail()

<img src="<?php echo get_the_post_thumbnail_url($loop->post->ID); ?>" class="img-responsive" alt=""/>

Perl:

sub is_palindrome($)
{
  $s = lc(shift); # ignore case
  $s =~ s/\W+//g; # consider only letters, digits, and '_'
  $s eq reverse $s;
}

It ignores case and strips non-alphanumeric characters (it locale- and unicode- neutral).

package Browser;

import org.openqa.selenium.WebDriver; import org.openqa.selenium.ie.InternetExplorerDriver;

public class Hello {

public static void main(String[] args) {


    // setting IEdriver property
    System.setProperty("webdriver.ie.driver",
            "paste the path of the IEDriverserver.exe");

    WebDriver driver = new InternetExplorerDriver();

    // launching the google home screen
    driver.get("https://www.google.com/?gws_rd=ssl");

}

} //Hope this will work

You can return json in PHP this way:

header('Content-Type: application/json');
echo json_encode(array('foo' => 'bar'));
exit;

Give an id for the select object like this:

<select id="mySelect" name="val" size="1" >
    <option value="A">Apple</option>
    <option value="C">Cars</option>
    <option value="H">Honda</option>
    <option value="F">Fiat</option>
    <option value="I">Indigo</option>                    
</select> 

You can do it in pure JavaScript:

var selectobject = document.getElementById("mySelect");
for (var i=0; i<selectobject.length; i++) {
    if (selectobject.options[i].value == 'A')
        selectobject.remove(i);
}

But - as the other answers suggest - it's a lot easier to use jQuery or some other JS library.

You cannot alter a column to be an IDENTITY column. What you'll need to do is create a new column which is defined as an IDENTITY from the get-go, then drop the old column, and rename the new one to the old name.

ALTER TABLE (yourTable) ADD NewColumn INT IDENTITY(1,1)

ALTER TABLE (yourTable) DROP COLUMN OldColumnName

EXEC sp_rename 'yourTable.NewColumn', 'OldColumnName', 'COLUMN'

Marc

You could also implement rich comparison via __eq__ method for your Test class and use in operator. Not sure if this is the best stand-alone way, but in case if you need to compare Test instances based on value somewhere else, this could be useful.

class Test:
    def __init__(self, value):
        self.value = value

    def __eq__(self, other):
        """To implement 'in' operator"""
        # Comparing with int (assuming "value" is int)
        if isinstance(other, int):
            return self.value == other
        # Comparing with another Test object
        elif isinstance(other, Test):
            return self.value == other.value

import random

value = 5

test_list = [Test(random.randint(0,100)) for x in range(1000)]

if value in test_list:
    print "i found it"

If your chart uses both fill and color aesthetics, you can remove the legend with:

+ guides(fill=FALSE, color=FALSE)

Barebones C program to produce the above error:

#include <iostream>
using namespace std;
int main(){
    char *p;
    *p = 'c';

    cout << *p[0];  
    //error: invalid type argument of `unary *'
    //peeking too deeply into p, that's a paddlin.

    cout << **p;    
    //error: invalid type argument of `unary *'
    //peeking too deeply into p, you better believe that's a paddlin.
}

ELI5:

The master puts a shiny round stone inside a small box and gives it to a student. The master says: "Open the box and remove the stone". The student does so.

Then the master says: "Now open the stone and remove the stone". The student said: "I can't open a stone".

The student was then enlightened.

I would suggest you take a look at Modernizr. Its a small light weight library that you can asynchronously load your javascript with features that allow you to check if the file is loaded and execute the script in the other you specify.

Here is an example of loading jquery:

Modernizr.load([
  {
    load: '//ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.js',
    complete: function () {
      if ( !window.jQuery ) {
            Modernizr.load('js/libs/jquery-1.6.1.min.js');
      }
    }
  },
  {
    // This will wait for the fallback to load and
    // execute if it needs to.
    load: 'needs-jQuery.js'
  }
]);

String is an immutable.

StringBuffer is a mutable and synchronized.

StringBuilder is also mutable but its not synchronized.

Further to @montrealmike 's answer, can I just add my adaptation?

I did this:

.container { 
  overflow: hidden; 
  .... 
} 

#sidebar { 
  margin-bottom: -101%;
  padding-bottom: 101%; 
  .... 
} 

I did the "101%" thing to cater for the (ultra rare) possibility that somebody may be viewing the site on a huge screen with a height more than 5000px!

Great answer though, montrealmike. It worked perfectly for me.

<input ... checked />
<input ... checked="checked" />

Those are equally valid. And in JavaScript:

input.checked = true;
input.setAttribute("checked");
input.setAttribute("checked","checked");

To redirect the visitor to another page (particularly useful in a conditional loop), simply use the following code:

<?php
    header('Location: mypage.php');
?>

In this case, mypage.php is the address of the page to which you would like to redirect the visitors. This address can be absolute and may also include the parameters in this format: mypage.php?param1=val1&m2=val2)

Relative/Absolute Path

When dealing with relative or absolute paths, it is ideal to choose an absolute path from the root of the server (DOCUMENT_ROOT). Use the following format:

<?php
    header('Location: /directory/mypage.php');
?>

If ever the target page is on another server, you include the full URL:

<?php
    header('Location: http://www.ccm.net/forum/');
?>

HTTP Headers

According to HTTP protocol, HTTP headers must be sent before any type of content. This means that no characters should ever be sent before the header — not even an empty space!

Temporary/Permanent Redirections

By default, the type of redirection presented above is a temporary one. This means that search engines, such as Google Search, will not take the redirection into account when indexing.

If you would like to notify search engines that a page has been permanently moved to another location, use the following code:

<?
    header('Status: 301 Moved Permanently', false, 301);
    header('Location: new_address');
?>

For example, this page has the following code:

<?
    header('Status: 301 Moved Permanently', false, 301);
    header('Location: /pc/imprimante.php3');
    exit();
?>

When you click on the link above, you are automatically redirected to this page. Moreover, it is a permanent redirection (Status: 301 Moved Permanently). So, if you type the first URL into Google, you will automatically be redirected to the second, redirected link.

Interpretation of PHP Code

The PHP code located after the header() will be interpreted by the server, even if the visitor moves to the address specified in the redirection. In most cases, this means that you need a method to follow the header() function of the exit() function in order to decrease the load of the server:

<?
    header('Status: 301 Moved Permanently', false, 301);
    header('Location: address');
    exit();
?>

This tutorial gives a simple, yet elegant, solution, which i transcribe:

#include <sstream>
#include <string>
#include <stdexcept>

class BadConversion : public std::runtime_error {
public:
  BadConversion(std::string const& s)
    : std::runtime_error(s)
    { }
};

inline std::string stringify(double x)
{
  std::ostringstream o;
  if (!(o << x))
    throw BadConversion("stringify(double)");
  return o.str();
}
...
std::string my_val = stringify(val);

I’ve got a similar problem with MySQL on a Mac (Mac Os X Could not startup MySQL Server. Reason: 255 and also “ERROR! The server quit without updating PID file”). After a long trial and error process, finally in order to restore the file permissions, I’ve just do that:

launch the Disk Utilities.app
choose my drive on the left panel
click on the “Repair disk permissions” button

This did the trick for me. Hoping this can help someone else.

Imo, the best way to parse your JSON response with GSON would be creating classes that "match" your response and then use Gson.fromJson() method.
For example:

class Response {
    Map<String, App> descriptor;
    // standard getters & setters...
}

class App {
  String name;
  int age;
  String[] messages;
  // standard getters & setters...
}

Then just use:

Gson gson = new Gson();
Response response = gson.fromJson(yourJson, Response.class);

Where yourJson can be a String, any Reader, a JsonReader or a JsonElement.

Finally, if you want to access any particular field, you just have to do:

String name = response.getDescriptor().get("app3").getName();

You can always parse the JSON manually as suggested in other answers, but personally I think this approach is clearer, more maintainable in long term and it fits better with the whole idea of JSON.

You should put in WEB-INF any pages, or pieces of pages, that you do not want to be public. Usually, JSP or facelets are found outside WEB-INF, but in this case they are easily accesssible for any user. In case you have some authorization restrictions, WEB-INF can be used for that.

WEB-INF/lib can contain 3rd party libraries which you do not want to pack at system level (JARs can be available for all the applications running on your server), but only for this particular applciation.

Generally speaking, many configurations files also go into WEB-INF.

As for WEB-INF/classes - it exists in any web-app, because that is the folder where all the compiled sources are placed (not JARS, but compiled .java files that you wrote yourself).

It means that a process or script you have created is sending mail to an account on your local machine (for example, a mail server running on localhost application).

Manage this mail with these commands:

t <message list>        type messages
n                       goto and type next message
e <message list>        edit messages
f <message list>        give head lines of messages
d <message list>        delete messages
s <message list>        file append messages to file
u <message list>        undelete messages
R <message list>        reply to message senders
r <message list>        reply to message senders and all recipients
pre <message list>      make messages go back to /var/mail
m <user list>           mail to specific users
q                       quit, saving unresolved messages in mbox
x                       quit, do not remove system mailbox
h                       print out active message headers
!                       shell escape
cd [directory]          chdir to directory or home if none given

A consists of integers, ranges of same, or user names separated by spaces. If omitted, Mail uses the last message typed.

A consists of user names or aliases separated by spaces. Aliases are defined in .mailrc in your home directory.

Also, you can display current position by "drag" listener and write it to visible or hidden field. You may also need to store zoom. Here's copy&paste from working tool:

            function map_init() {
            var lt=48.451778;
            var lg=31.646305;

            var myLatlng = new google.maps.LatLng(lt,lg);
            var mapOptions = {
                center: new google.maps.LatLng(lt,lg),
                zoom: 6,
                mapTypeId: google.maps.MapTypeId.ROADMAP
            };

            var map = new google.maps.Map(document.getElementById('map'),mapOptions);   
            var marker = new google.maps.Marker({
                position:myLatlng,
                map:map,
                draggable:true
            });

            google.maps.event.addListener(
                marker,
                'drag',
                function() {
                    document.getElementById('lat1').innerHTML = marker.position.lat().toFixed(6);
                    document.getElementById('lng1').innerHTML = marker.position.lng().toFixed(6);
                    document.getElementById('zoom').innerHTML = mapObject.getZoom();

                    // Dynamically show it somewhere if needed
                    $(".x").text(marker.position.lat().toFixed(6));
                    $(".y").text(marker.position.lng().toFixed(6));
                    $(".z").text(map.getZoom());

                }
            );                  
            }

Is this what you are after? Just index the element and assign a new value.

A[2,1]=150

A
Out[345]: 
array([[ 1,  2,  3,  4],
       [ 5,  6,  7,  8],
       [ 9, 150, 11, 12],
       [13, 14, 15, 16]])

Swift

Short answer

Use a NotificationCenter observer rather than viewWillAppear.

override func viewDidLoad() {
    super.viewDidLoad()

    // set observer for UIApplication.willEnterForegroundNotification
    NotificationCenter.default.addObserver(self, selector: #selector(willEnterForeground), name: UIApplication.willEnterForegroundNotification, object: nil)

}

// my selector that was defined above
@objc func willEnterForeground() {
    // do stuff
}

Long answer

To find out when an app comes back from the background, use a NotificationCenter observer rather than viewWillAppear. Here is a sample project that shows which events happen when. (This is an adaptation of this Objective-C answer.)

import UIKit
class ViewController: UIViewController {

    // MARK: - Overrides

    override func viewDidLoad() {
        super.viewDidLoad()
        print("view did load")

        // add notification observers
        NotificationCenter.default.addObserver(self, selector: #selector(didBecomeActive), name: UIApplication.didBecomeActiveNotification, object: nil)
        NotificationCenter.default.addObserver(self, selector: #selector(willEnterForeground), name: UIApplication.willEnterForegroundNotification, object: nil)

    }

    override func viewWillAppear(_ animated: Bool) {
        print("view will appear")
    }

    override func viewDidAppear(_ animated: Bool) {
        print("view did appear")
    }

    // MARK: - Notification oberserver methods

    @objc func didBecomeActive() {
        print("did become active")
    }

    @objc func willEnterForeground() {
        print("will enter foreground")
    }

}

On first starting the app, the output order is:

view did load
view will appear
did become active
view did appear

After pushing the home button and then bringing the app back to the foreground, the output order is:

will enter foreground
did become active 

So if you were originally trying to use viewWillAppear then UIApplication.willEnterForegroundNotification is probably what you want.

Note

As of iOS 9 and later, you don't need to remove the observer. The documentation states:

If your app targets iOS 9.0 and later or macOS 10.11 and later, you don't need to unregister an observer in its dealloc method.

u[8] = (u[8] | 0x80) & 0xBF // what's the purpose ?
u[6] = (u[6] | 0x40) & 0x4F // what's the purpose ?

These lines clamp the values of byte 6 and 8 to a specific range. rand.Read returns random bytes in the range 0-255, which are not all valid values for a UUID. As far as I can tell, this should be done for all the values in the slice though.

If you are on linux, you can alternatively call /usr/bin/uuidgen.

package main

import (
    "fmt"
    "log"
    "os/exec"
)

func main() {
    out, err := exec.Command("uuidgen").Output()
    if err != nil {
        log.Fatal(err)
    }
    fmt.Printf("%s", out)
}

Which yields:

$ go run uuid.go 
dc9076e9-2fda-4019-bd2c-900a8284b9c4

ABSTRACT CLASSES AND ABSTARCT METHODS FULL DESCRIPTION GO THROUGH IT

abstract method do not have body.A well defined method can't be declared abstract.

A class which has abstract method must be declared as abstract.

Abstract class can't be instantiated.

it is solved in react-router-dom 4.4.0 see: Route's proptypes fail

now it is beta, or just wait for final release.

npm install [email protected] --save

In my case I wanted to achieve format "HH:MM:SS.fff". I solved it like this:

timestamp = 28.97000002861023
str(datetime.fromtimestamp(timestamp)+timedelta(hours=-1)).split(' ')[1][:12]
'00:00:28.970'

According to @Shovalt's answer, but in short:

Alternatively you could use the following lines of code

    from sklearn.metrics import f1_score
    metrics.f1_score(y_test, y_pred, labels=np.unique(y_pred))

This should remove your warning and give you the result you wanted, because it no longer considers the difference between the sets, by using the unique mode.

Visual Studio Community Edition 2015

Been having this error all day. I finally fixed it by going to Tools>Import and Export Settings> Reset all options > Reset General Settings.

Once it's reset go to Tools>Options>Debugging>Symbols> -- Then Check the box next to Microsoft Symbol Servers.

Run your app in debug mode, and it will open up windows saying it's downloading Symbols for a bunch of different .dll files. Let it finish doing this.

Once it completes, it should work again.

I have come up with a solution that is relatively accurate at evaluating when the angular initialisation is complete.

The directive is:

.directive('initialisation',['$rootScope',function($rootScope) {
            return {
                restrict: 'A',
                link: function($scope) {
                    var to;
                    var listener = $scope.$watch(function() {
                        clearTimeout(to);
                        to = setTimeout(function () {
                            console.log('initialised');
                            listener();
                            $rootScope.$broadcast('initialised');
                        }, 50);
                    });
                }
            };
        }]);

That can then just be added as an attribute to the body element and then listened for using $scope.$on('initialised', fn)

It works by assuming that the application is initialised when there are no more $digest cycles. $watch is called every digest cycle and so a timer is started (setTimeout not $timeout so a new digest cycle is not triggered). If a digest cycle does not occur within the timeout then the application is assumed to have initialised.

It is obviously not as accurate as satchmoruns solution (as it is possible a digest cycle takes longer than the timeout) but my solution doesn't need you to keep track of the modules which makes it that much easier to manage (particularly for larger projects). Anyway, seems to be accurate enough for my requirements. Hope it helps.

http://phpcodechecker.com/ performs syntax check and a custom check for common errors.

I'm a novice, but it helped me.

Your data is poorly formed. The value fields in particular have numerous spaces and new lines. Automated formatters won't work on this, as they will not modify the actual data. As you generate the data for output, filter it as needed to avoid the spaces.

You should be able to choose the SQL Server Database file option to get the right kind of database (the system.data.SqlClient provider), and then manually correct the connection string to point to your db.

I think the reasoning behind those db choices probably goes something like this:

• If you're using the Express Edition, and you're not using Visual Web Developer, you're probably building a desktop program.
• If you're building a desktop program, and you're using the express edition, you're probably a hobbyist or uISV-er working at home rather than doing development for a corporation.
• If you're not developing for a corporation, your app is probably destined for the end-user and your data store is probably going on their local machine.
• You really shouldn't be deploying server-class databases to end-user desktops. An in-process db like Sql Server Compact or MS Access is much more appropriate.

However, this logic doesn't quite hold. Even if each of those 4 points is true 90% of the time, by the time you apply all four of them it only applies to ~65% of your audience, which means up to 35% of the express market might legitimately want to talk to a server-class db, and that's a significant group. And so, the simplified (greedy) version:

• A real db server (and the hardware to run it) costs real money. If you have access to that, you ought to be able to afford at least the standard edition of visual studio.