sp_who2 will actually provide a list of connections for the database server, not a database. To view connections for a single database (YourDatabaseName in this example), you can use

DECLARE @AllConnections TABLE(
    SPID INT,
    Status VARCHAR(MAX),
    LOGIN VARCHAR(MAX),
    HostName VARCHAR(MAX),
    BlkBy VARCHAR(MAX),
    DBName VARCHAR(MAX),
    Command VARCHAR(MAX),
    CPUTime INT,
    DiskIO INT,
    LastBatch VARCHAR(MAX),
    ProgramName VARCHAR(MAX),
    SPID_1 INT,
    REQUESTID INT
)

INSERT INTO @AllConnections EXEC sp_who2

SELECT * FROM @AllConnections WHERE DBName = 'YourDatabaseName'

(Adapted from SQL Server: Filter output of sp_who2.)

According to Daniel Simmons:

Create a new ObjectContext instance in a Using statement for each service method so that it is disposed of before the method returns. This step is critical for scalability of your service. It makes sure that database connections are not kept open across service calls and that temporary state used by a particular operation is garbage collected when that operation is over. The Entity Framework automatically caches metadata and other information it needs in the app domain, and ADO.NET pools database connections, so re-creating the context each time is a quick operation.

This is from his comprehensive article here:

http://msdn.microsoft.com/en-us/magazine/ee335715.aspx

I believe this advice extends to HTTP requests, so would be valid for ASP.NET. A stateful, fat-client application such as a WPF application might be the only case for a "shared" context.

In the app server we use where I work (Oracle Application Server 10g, as I recall), pooling is handled by the app server. We retrieve a javax.sql.DataSource using a JNDI lookup with a javax.sql.InitialContext.

it's done something like this

try {     
   context = new InitialContext();
   jdbcURL = (DataSource) context.lookup("jdbc/CachedDS");
   System.out.println("Obtained Cached Data Source ");
}
catch(NamingException e)   
{  
    System.err.println("Error looking up Data Source from Factory: "+e.getMessage());
}

(We didn't write this code, it's copied from this documentation.)

I was getting the same error in my IBM Websphere with c3p0 jar files. I have Oracle 10g database. I simply added the oraclejdbc.jar files in the Application server JVM in IBM Classpath using Websphere Console and the error was resolved.

The oraclejdbc.jar should be set with your C3P0 jar files in your Server Class path whatever it be tomcat, glassfish of IBM.

select 1 would work in sql server, not sure about the others.

Use standard ansi sql to create a table and then query from that table.

Unfortunately they are all out of date. DBCP has been updated a bit recently, the other two are 2-3 years old, with many outstanding bugs.

We can define maximum pool size in following way:

                <pool> 
               <min-pool-size>5</min-pool-size>
                <max-pool-size>200</max-pool-size>
                <prefill>true</prefill>
                <use-strict-min>true</use-strict-min>
                <flush-strategy>IdleConnections</flush-strategy>
                </pool>

I have implemented below code in my project to implement connection pooling in my code so it will create a minimum connection in my project and reuse available connection

/* Mongo.js*/

var MongoClient = require('mongodb').MongoClient;
var url = "mongodb://localhost:27017/yourdatabasename"; 
var assert = require('assert');

var connection=[];
// Create the database connection
establishConnection = function(callback){

                MongoClient.connect(url, { poolSize: 10 },function(err, db) {
                    assert.equal(null, err);

                        connection = db
                        if(typeof callback === 'function' && callback())
                            callback(connection)

                    }

                )



}

function getconnection(){
    return connection
}

module.exports = {

    establishConnection:establishConnection,
    getconnection:getconnection
}

/*app.js*/
// establish one connection with all other routes will use.
var db = require('./routes/mongo')

db.establishConnection();

//you can also call with callback if you wanna create any collection at starting
/*
db.establishConnection(function(conn){
  conn.createCollection("collectionName", function(err, res) {
    if (err) throw err;
    console.log("Collection created!");
  });
};
*/

// anyother route.js

var db = require('./mongo')

router.get('/', function(req, res, next) {
    var connection = db.getconnection()
    res.send("Hello");

});

For you LINQers out there that never use a regular dictionary constructor

myCollection.ToDictionary(x => x.PartNumber, x => x.PartDescription, StringComparer.OrdinalIgnoreCase)

About the removal of componentWillReceiveProps: you should be able to handle its uses with a combination of getDerivedStateFromProps and componentDidUpdate, see the React blog post for example migrations. And yes, the object returned by getDerivedStateFromProps updates the state similarly to an object passed to setState.

In case you really need the old value of a prop, you can always cache it in your state with something like this:

state = {
  cachedSomeProp: null
  // ... rest of initial state
};

static getDerivedStateFromProps(nextProps, prevState) {
  // do things with nextProps.someProp and prevState.cachedSomeProp
  return {
    cachedSomeProp: nextProps.someProp,
    // ... other derived state properties
  };
}

Anything that doesn't affect the state can be put in componentDidUpdate, and there's even a getSnapshotBeforeUpdate for very low-level stuff.

UPDATE: To get a feel for the new (and old) lifecycle methods, the react-lifecycle-visualizer package may be helpful.

I think you can fix that with Flexbox

.black {
  height : 200px;
  width : 200px;
  background-color : teal;
  border: 5px solid rgb(0, 53, 53);
  /* This is the important part */
  display : flex;
  justify-content: center;
  align-items: center;
}

.message {
  background-color :  rgb(119, 128, 0);
  border: 5px solid rgb(0, 53, 53);
  height : 50%;
  width : 50%;
  padding : 5px;
}

<div class="black">
    <div class="message">
        This is a popup message.
    </div>
</div>

The Array.prototype property represents the prototype for the Array constructor and allows you to add new properties and methods to all Array objects. we can create a prototype for this purpose

Array.prototype.has_element = function(element) {
    return $.inArray( element, this) !== -1;
};

And then use it like this

var numbers= [1, 2, 3, 4];
numbers.has_element(3) => true
numbers.has_element(10) => false

See the Demo below

Array.prototype.has_element = function(element) {_x000D_
  return $.inArray(element, this) !== -1;_x000D_
};_x000D_
_x000D_
_x000D_
_x000D_
var numbers = [1, 2, 3, 4];_x000D_
console.log(numbers.has_element(3));_x000D_
console.log(numbers.has_element(10));

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

bash 4.2 introduces the lastpipe option, which allows your code to work as written, by executing the last command in a pipeline in the current shell, rather than a subshell.

shopt -s lastpipe
echo "hello world" | read test; echo test=$test

It is a pointer to a pointer, so yes, in a way it's a 2D character array. In the same way that a char* could indicate an array of chars, a char** could indicate that it points to and array of char*s.

Alternatively, use:

forfiles /s /m *.png /c "cmd /c echo @path"

The forfiles command is available in Windows Vista and up.

.compare() returns an integer, which is a measure of the difference between the two strings.

• A return value of 0 indicates that the two strings compare as equal.
• A positive value means that the compared string is longer, or the first non-matching character is greater.
• A negative value means that the compared string is shorter, or the first non-matching character is lower.

operator== simply returns a boolean, indicating whether the strings are equal or not.

If you don't need the extra detail, you may as well just use ==.

is the ajax uploader refreshing your input element? if so you should consider using .live() method.

 $('#imageFile').live('change', function(){ uploadFile(); });

update:

from jQuery 1.7+ you should use now .on()

 $(parent_element_selector_here or document ).on('change','#imageFile' , function(){ uploadFile(); });

It is also possible to int array to direct assign value.

like this

int[] numbers = sNumbers.Split(',').Select(Int32.Parse).ToArray();

According to IE 9 – What’s Changed? on the HttpWatch blog, IE9 still has a 2 connection limit when over VPN.

Using a VPN Still Clobbers IE 9 Performance

We previously reported about the scaling back of the maximum number of concurrent connections in IE 8 when your PC uses a VPN connection. This happened even if the browser traffic didn’t go over that connection.

Unfortunately, IE 9 is affected by VPN connections in the same way:

if you just run the main.py under the app, just import like

from mymodule import myclass

if you want to call main.py on other folder, use:

from .mymodule import myclass

for example:

+-- app
¦   +-- __init__.py
¦   +-- main.py
¦   +-- mymodule.py
+-- __init__.py
+-- run.py

main.py

from .mymodule import myclass

run.py

from app import main
print(main.myclass)

So I think the main question of you is how to call app.main.

The error message means that you need to invoke volteado and siprimo on an instance of the Program class. E.g.:

...
Program p = new Program();
long av = p.volteado(a); // av is "a" but swapped

if (p.siprimo(a) == false && p.siprimo(av) == false)
...

They cannot be invoked directly from the Main method because Main is static while volteado and siprimo are not.

The easiest way to fix this is to make the volteado and siprimo methods static:

private static bool siprimo(long a)
{
    ...
}

private static bool volteado(long a)
{
   ...
}

There are obviously plenty of answers, but this one answers it very nicely (with source)

#pragma omp for only delegates portions of the loop for different threads in the current team. A team is the group of threads executing the program. At program start, the team consists only of a single member: the master thread that runs the program.

To create a new team of threads, you need to specify the parallel keyword. It can be specified in the surrounding context:

#pragma omp parallel
{
   #pragma omp for
   for(int n = 0; n < 10; ++n)
   printf(" %d", n);
}

and:

What are: parallel, for and a team

The difference between parallel, parallel for and for is as follows:

A team is the group of threads that execute currently. At the program beginning, the team consists of a single thread. A parallel construct splits the current thread into a new team of threads for the duration of the next block/statement, after which the team merges back into one. for divides the work of the for-loop among the threads of the current team.

It does not create threads, it only divides the work amongst the threads of the currently executing team. parallel for is a shorthand for two commands at once: parallel and for. Parallel creates a new team, and for splits that team to handle different portions of the loop. If your program never contains a parallel construct, there is never more than one thread; the master thread that starts the program and runs it, as in non-threading programs.

https://bisqwit.iki.fi/story/howto/openmp/

eldNew <- eld[-14,]

See ?"[" for a start ...

For ‘[’-indexing only: ‘i’, ‘j’, ‘...’ can be logical vectors, indicating elements/slices to select. Such vectors are recycled if necessary to match the corresponding extent. ‘i’, ‘j’, ‘...’ can also be negative integers, indicating elements/slices to leave out of the selection.

(emphasis added)

edit: looking around I notice How to delete the first row of a dataframe in R? , which has the answer ... seems like the title should have popped to your attention if you were looking for answers on SO?

edit 2: I also found How do I delete rows in a data frame? , searching SO for delete row data frame ...

Also http://rwiki.sciviews.org/doku.php?id=tips:data-frames:remove_rows_data_frame

Since 580+ people have voted for an incorrect answer, and 800+ have voted for a working but shotgun-style answer, I thought it might be worth redoing my answer in a simpler form that everybody can understand.

function isString(x) {
  return Object.prototype.toString.call(x) === "[object String]"
}

Or, inline (I have an UltiSnip setup for this):

Object.prototype.toString.call(myVar) === "[object String]"

FYI, Pablo Santa Cruz's answer is wrong, because typeof new String("string") is object

DRAX's answer is accurate and functional, and should be the correct answer (since Pablo Santa Cruz is most definitely incorrect, and I won't argue against the popular vote.)

However, this answer is also definitely correct, and actually the best answer (except, perhaps, for the suggestion of using lodash/underscore). disclaimer: I contributed to the lodash 4 codebase.

My original answer (which obviously flew right over a lot of heads) follows:

I transcoded this from underscore.js:

['Arguments', 'Function', 'String', 'Number', 'Date', 'RegExp'].forEach( 
    function(name) { 
        window['is' + name] = function(obj) {
              return toString.call(obj) == '[object ' + name + ']';
    }; 
});

That will define isString, isNumber, etc.

In Node.js, this can be implemented as a module:

module.exports = [
  'Arguments',
  'Function', 
  'String', 
  'Number', 
  'Date', 
  'RegExp'
].reduce( (obj, name) => {
  obj[ 'is' + name ] = x => toString.call(x) == '[object ' + name + ']';
  return obj;
}, {});

[edit]: Object.prototype.toString.call(x) works to delineate between functions and async functions as well:

const fn1 = () => new Promise((resolve, reject) => setTimeout(() => resolve({}), 1000))_x000D_
const fn2 = async () => ({})_x000D_
_x000D_
console.log('fn1', Object.prototype.toString.call(fn1))_x000D_
console.log('fn2', Object.prototype.toString.call(fn2))

I use such alias in my .bashrc config

alias gpb='git push origin `git rev-parse --abbrev-ref HEAD`'

On the command $gpb it takes the current branch name and pushes it to the origin.

Here are my other aliases:

alias gst='git status'
alias gbr='git branch'
alias gca='git commit -am'
alias gco='git checkout'

Just change your syntax ever so slightly:

CASE WHEN STATE = 2 AND RetailerProcessType = 1 THEN '"AUTHORISED"'
     WHEN STATE = 1 AND RetailerProcessType = 2 THEN '"PENDING"'
     WHEN STATE = 2 AND RetailerProcessType = 2 THEN '"AUTHORISED"'
     ELSE '"DECLINED"'
END

If you don't put the field expression before the CASE statement, you can put pretty much any fields and comparisons in there that you want. It's a more flexible method but has slightly more verbose syntax.

If you are using NodeJS, you can use the build-in util function:

import * as util from "util";
util.format('My string: %s', 'foo');

Document can be found here: https://nodejs.org/api/util.html#util_util_format_format_args

For regular Windows users who are not skilled with computers, it is practically not possible to install and use extensions from outside the Chrome Web Store.

Users of other operating systems (Linux, Mac, Chrome OS) can easily install unpacked extensions (in developer mode).
Windows users can also load an unpacked extension, but they will always see an information bubble with "Disable developer mode extensions" when they start Chrome or open a new incognito window, which is really annoying. The only way for Windows users to use unpacked extensions without such dialogs is to switch to Chrome on the developer channel, by installing https://www.google.com/chrome/browser/index.html?extra=devchannel#eula.

Extensions can be loaded in unpacked mode by following the following steps:

1. Visit chrome://extensions (via omnibox or menu -> Tools -> Extensions).
2. Enable Developer mode by ticking the checkbox in the upper-right corner.
3. Click on the "Load unpacked extension..." button.
4. Select the directory containing your unpacked extension.

If you have a crx file, then it needs to be extracted first. CRX files are zip files with a different header. Any capable zip program should be able to open it. If you don't have such a program, I recommend 7-zip.

These steps will work for almost every extension, except extensions that rely on their extension ID. If you use the previous method, you will get an extension with a random extension ID. If it is important to preserve the extension ID, then you need to know the public key of your CRX file and insert this in your manifest.json. I have previously given a detailed explanation on how to get and use this key at https://stackoverflow.com/a/21500707.

The simplest way is using pip command:

pip list | grep Keras

UPDATE 11/22/2013 - this is the latest WebApi package:

Install-Package Microsoft.AspNet.WebApi

Original answer (this is an older WebApi package)

Install-Package AspNetWebApi

More details.

You aren't trying to save unicode strings, you're trying to save bytestrings in the UTF-8 encoding. Make them actual unicode string literals:

user.last_name = u'Slatkevicius'

or (when you don't have string literals) decode them using the utf-8 encoding:

user.last_name = lastname.decode('utf-8')

1. Your request should be to the server, NOT the server.js file which instantiates it. So, the request should look something like this: xmlhttp.open("GET","http://localhost:8001/", true); Also, you are trying to serve the front-end (index.html) AND serve AJAX requests at the same URI. To accomplish this, you are going to have to introduce logic to your server.js that will differentiate between your AJAX requests and a normal http access request. To do this, you'll want to either introduce GET/POST data (i.e. call http://localhost:8001/?getstring=true) or use a different path for your AJAX requests (i.e. call http://localhost:8001/getstring). On the server end then, you'll need to examine the request object to determine what to write on the response. For the latter option, you need to use the 'url' module to parse the request.

2. You are correctly calling listen() but incorrectly writing the response. First of all, if you wish to serve index.html when navigating to http://localhost:8001/, you need to write the contents of the file to the response using response.write() or response.end(). First, you need to include fs=require('fs') to get access to the filesystem. Then, you need to actually serve the file.

3. XMLHttpRequest needs a callback function specified if you use it asynchronously (third parameter = true, as you have done) AND want to do something with the response. The way you have it now, string will be undefined (or perhaps null), because that line will execute before the AJAX request is complete (i.e. the responseText is still empty). If you use it synchronously (third parameter = false), you can write inline code as you have done. This is not recommended as it locks the browser during the request. Asynchronous operation is usually used with the onreadystatechange function, which can handle the response once it is complete. You need to learn the basics of XMLHttpRequest. Start here.

Here is a simple implementation that incorporates all of the above:

server.js:

var http = require('http'),
      fs = require('fs'),
     url = require('url'),
 choices = ["hello world", "goodbye world"];

http.createServer(function(request, response){
    var path = url.parse(request.url).pathname;
    if(path=="/getstring"){
        console.log("request recieved");
        var string = choices[Math.floor(Math.random()*choices.length)];
        console.log("string '" + string + "' chosen");
        response.writeHead(200, {"Content-Type": "text/plain"});
        response.end(string);
        console.log("string sent");
    }else{
        fs.readFile('./index.html', function(err, file) {  
            if(err) {  
                // write an error response or nothing here  
                return;  
            }  
            response.writeHead(200, { 'Content-Type': 'text/html' });  
            response.end(file, "utf-8");  
        });
    }
}).listen(8001);
console.log("server initialized");

frontend (part of index.html):

function newGame()
{
   guessCnt=0;
   guess="";
   server();
   displayHash();
   displayGuessStr();
   displayGuessCnt();
}

function server()
{
   xmlhttp = new XMLHttpRequest();
   xmlhttp.open("GET","http://localhost:8001/getstring", true);
   xmlhttp.onreadystatechange=function(){
         if (xmlhttp.readyState==4 && xmlhttp.status==200){
           string=xmlhttp.responseText;
         }
   }
   xmlhttp.send();
}

You will need to be comfortable with AJAX. Use the mozilla learning center to learn about XMLHttpRequest. After you can use the basic XHR object, you will most likely want to use a good AJAX library instead of manually writing cross-browser AJAX requests (for example, in IE you'll need to use an ActiveXObject instead of XHR). The AJAX in jQuery is excellent, but if you don't need everything else jQuery offers, find a good AJAX library here: http://microjs.com/. You will also need to get comfy with the node.js docs, found here. Search http://google.com for some good node.js server and static file server tutorials. http://nodetuts.com is a good place to start.

UPDATE: I have changed response.sendHeader() to the new response.writeHead() in the code above !!!

I tried all these solutions. edc598's was the closest to working, but touch events did not trigger on other Views contained in the layout. In case anyone needs this behavior, this is what I ended up doing:

I created an (invisible) FrameLayout called touchInterceptor as the last View in the layout so that it overlays everything (edit: you also have to use a RelativeLayout as the parent layout and give the touchInterceptor fill_parent attributes). Then I used it to intercept touches and determine if the touch was on top of the EditText or not:

FrameLayout touchInterceptor = (FrameLayout)findViewById(R.id.touchInterceptor);
touchInterceptor.setOnTouchListener(new OnTouchListener() {
    @Override
    public boolean onTouch(View v, MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_DOWN) {
            if (mEditText.isFocused()) {
                Rect outRect = new Rect();
                mEditText.getGlobalVisibleRect(outRect);
                if (!outRect.contains((int)event.getRawX(), (int)event.getRawY())) {
                    mEditText.clearFocus();
                    InputMethodManager imm = (InputMethodManager) v.getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 
                    imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
                }
            }
        }
        return false;
    }
});

Return false to let the touch handling fall through.

It's hacky, but it's the only thing that worked for me.

You should install the PHP 5 library for Apache.

For Debian and Ubuntu:

apt-get install libapache2-mod-php5

And restart the Apache:

service apache2 restart

This is functioning as described by the spec - several answers here are valid, and consistent with the following:

If it has block-level children, the height is the distance between the top border-edge of the topmost block-level child box that doesn't have margins collapsed through it and the bottom border-edge of the bottommost block-level child box that doesn't have margins collapsed through it. However, if the element has a nonzero top padding and/or top border, or is the root element, then the content starts at the top margin edge of the topmost child. (The first case expresses the fact that the top and bottom margins of the element collapse with those of the topmost and bottommost children, while in the second case the presence of the padding/border prevents the top margins from collapsing.) Similarly, if the element has a nonzero bottom padding and/or bottom border, then the content ends at the bottom margin edge of the bottommost child.

from here: https://www.w3.org/TR/css3-box/#blockwidth

Another way (for 2000 / 2005/2012/2014):

IF ((SELECT OBJECTPROPERTY( OBJECT_ID(N'table_name_here'), 'TableHasIdentity')) = 1)
    PRINT 'Yes'
ELSE
    PRINT 'No'

NOTE: table_name_here should be schema.table, unless the schema is dbo.

WebRequest request = WebRequest.Create("http://www.google.com");
try
{
     request.GetResponse();
}
catch //If exception thrown then couldn't get response from address
{
     MessageBox.Show("The URL is incorrect");`
}

Here you can download adt bundles 2014-07-02:

windows 32 bit: https://dl.google.com/android/adt/adt-bundle-windows-x86-20140702.zip

windows 64 bit: https://dl.google.com/android/adt/adt-bundle-windows-x86_64-20140702.zip

MacOS 64 bit: https://dl.google.com/android/adt/adt-bundle-mac-x86_64-20140702.zip

Linux 32 bit: https://dl.google.com/android/adt/adt-bundle-linux-x86-20140702.zip

Linux 64 bit: https://dl.google.com/android/adt/adt-bundle-linux-x86_64-20140702.zip

Using new api fetch:

const dataToSend = JSON.stringify({"email": "[email protected]", "password": "101010"});
let dataReceived = ""; 
fetch("", {
    credentials: "same-origin",
    mode: "same-origin",
    method: "post",
    headers: { "Content-Type": "application/json" },
    body: dataToSend
})
    .then(resp => {
        if (resp.status === 200) {
            return resp.json()
        } else {
            console.log("Status: " + resp.status)
            return Promise.reject("server")
        }
    })
    .then(dataJson => {
        dataReceived = JSON.parse(dataJson)
    })
    .catch(err => {
        if (err === "server") return
        console.log(err)
    })

console.log(`Received: ${dataReceived}`)                

To calculate tax, you could use round (after all, that's what the restaurant does):

def calc_tax(mealPrice):  
    tax = round(mealPrice*.06,2)
    return tax

To display the data, you could use a multi-line string, and the string format method:

def display_data(mealPrice, tax):
    total=round(mealPrice+tax,2)
    print('''\
Your Meal Price is {m:=5.2f}
Tax                {x:=5.2f}
Total              {t:=5.2f}
'''.format(m=mealPrice,x=tax,t=total))

Note the format method was introduced in Python 2.6, for earlier versions you'll need to use old-style string interpolation %:

    print('''\
Your Meal Price is %5.2f
Tax                %5.2f
Total              %5.2f
'''%(mealPrice,tax,total))

Then

mealPrice=input_meal()
tax=calc_tax(mealPrice)
display_data(mealPrice,tax)

yields:

# Enter the meal subtotal: $43.45
# Your Meal Price is 43.45
# Tax                 2.61
# Total              46.06

If you are using logging (https://docs.python.org/3/library/logging.html) to format or redirect your ERROR, NOTICE, and DEBUG messages, you can redirect the WARNINGS from the warning system to the logging system:

logging.captureWarnings(True)

See https://docs.python.org/3/library/warnings.html and https://docs.python.org/3/library/logging.html#logging.captureWarnings

In my case, I was formatting all the exceptions with the logging system, but warnings (e.g. scikit-learn) were not affected.

class Dad
{
    protected static String me = "dad";

    public void printMe()
    {
        System.out.println(me);
    }
}

class Son extends Dad
{
    protected static String _me = me = "son";
}

public void doIt()
{
    new Son().printMe();
}

... will print "son".

Using a little different approach, you can use try catch, with throw statement.

function name() {
    try {
        ...

        //get out of here
        if (a == 'stop')
            throw "exit";

        ...
    } catch (e) {
        // TODO: handle exception
    }
}

You need to install newest version of xCode from appStore. It contains the compiler for C(gcc) and C++(g++) for mac. Then you can install pandas without any problem. Use the following commands in terminal:

1. xcode-select --install

2. pip3 install pandas

It might take some time as it installs other packages too. Please be patient.

you can create a function. Add maxdepth as you like for traversing subdirectories.

def findNremove(path,pattern,maxdepth=1):
    cpath=path.count(os.sep)
    for r,d,f in os.walk(path):
        if r.count(os.sep) - cpath <maxdepth:
            for files in f:
                if files.endswith(pattern):
                    try:
                        print "Removing %s" % (os.path.join(r,files))
                        #os.remove(os.path.join(r,files))
                    except Exception,e:
                        print e
                    else:
                        print "%s removed" % (os.path.join(r,files))

path=os.path.join("/home","dir1","dir2")
findNremove(path,".bak")

This is totally OK.

1. The first group (m.group(0)) always captures the whole area that is covered by your regular expression. In this case, it's the whole string.
2. Regular expressions are greedy by default, meaning that the first group captures as much as possible without violating the regex. The (.*)(\\d+) (the first part of your regex) covers the ...QT300 int the first group and the 0 in the second.
3. You can quickly fix this by making the first group non-greedy: change (.*) to (.*?).

For more info on greedy vs. lazy, check this site.

download rpm packages and run the following command:

rpm -Uvh glibc-2.15-60.el6.x86_64.rpm \
glibc-common-2.15-60.el6.x86_64.rpm \
glibc-devel-2.15-60.el6.x86_64.rpm \
glibc-headers-2.15-60.el6.x86_64.rpm

We can directly specify the destination file with the dest option now. In the below example, the output json is stored into the /tmp/repo_version_file

- name: Get repository file repo_version model to set ambari_managed_repositories=false
  uri:
    url: 'http://<server IP>:8080/api/v1/stacks/HDP/versions/3.1/repository_versions/1?fields=operating_systems/*'
    method: GET
    force_basic_auth: yes
    user: xxxxx
    password: xxxxx
    headers:
      "X-Requested-By": "ambari"
      "Content-type": "Application/json"
    status_code: 200
    dest: /tmp/repo_version_file

cross browser variant

$(document).scrollTop();

Cron's granularity is in minutes and was not designed to wake up every x seconds to run something. Run your repeating task within a loop and it should do what you need:

#!/bin/env bash
while [ true ]; do
 sleep 30
 # do what you need to here
done

As you are running on Linux I suspect you are running out of file descriptors. Check out ulimit. Here is an article that describes the problem: http://www.cyberciti.biz/faq/linux-increase-the-maximum-number-of-open-files/

To allow user ec2-user (Amazon AWS) write access to the public web directory (/var/www/html),
enter this command via Putty or Terminal, as the root user sudo:

chown -R ec2-user /var/www/html

Make sure permissions on that entire folder were correct:

chmod -R 755 /var/www/html

Doc's:

Setting up amazon ec2-instances

Connect to Amazon EC2 file directory using Filezilla and SFTP (Video)

Understanding and Using File Permissions

1. Open Storage Management

   • Go to ? > About This Mac > Window > Storage Management
   • Or, hit ? + Space to open Spotlight and search for Storage Management.

2. Select Applications on left pane.

3. Right click on Xcode on the right pane and select delete.

This will remove XCode from the installed applications list of your Mac's App Store.

Update: This worked for me on macOS Sierra 10.12.1.

I found the InvokeRequired not reliable, so I simply use

if (!this.IsHandleCreated)
{
    this.CreateHandle();
}

If you want to use Unix shell commands on Windows, you can use Windows Powershell, which includes both Windows and Unix commands as aliases. You can find more info on it in the documentation.

PowerShell supports aliases to refer to commands by alternate names. Aliasing allows users with experience in other shells to use common command names that they already know for similar operations in PowerShell.

The PowerShell equivalents may not produce identical results. However, the results are close enough that users can do work without knowing the PowerShell command name.

Well in simple term.

html()-- to get inner html(html tags and text).

text()-- to get only text if present inside(only text)

Update to Android Studio 3.0.1 which treats these as warnings. Android 3.0 was treating such warnings as errors and hence causing the gradle sync operation to fail.

Be aware that String.prototype.{ split, slice, substr, substring } operate on UTF-16 encoded strings

None of the previous answers are Unicode-aware. Strings are encoded as UTF-16 in most modern JavaScript engines, but higher Unicode code points require surrogate pairs, so older, pre-existing string methods operate on UTF-16 code units, not Unicode code points.

const string = "?";

console.log(string.slice(0, -1)); // "?\ud83e"
console.log(string.substr(0, string.length - 1)); // "?\ud83e"
console.log(string.substring(0, string.length - 1)); // "?\ud83e"
console.log(string.replace(/.$/, "")); // "?\ud83e"
console.log(string.match(/(.*).$/)[1]); // "?\ud83e"

const utf16Chars = string.split("");

utf16Chars.pop();
console.log(utf16Chars.join("")); // "?\ud83e"

In addition, RegExp methods, as suggested in older answers, don’t match line breaks at the end:

const string = "Hello, world!\n";

console.log(string.replace(/.$/, "").endsWith("\n")); // true
console.log(string.match(/(.*).$/) === null); // true

Use the string iterator to iterate characters

Unicode-aware code utilizes the string’s iterator; see Array.from and ... spread. string[Symbol.iterator] can be used (e.g. instead of string) as well.

Also see How to split Unicode string to characters in JavaScript.

Examples:

const string = "?";

console.log(Array.from(string).slice(0, -1).join("")); // "?"
console.log([
  ...string
].slice(0, -1).join("")); // "?"

Use the s and u flags on a RegExp

The dotAll or s flag makes . match line break characters, the unicode or u flag enables certain Unicode-related features. Note that, when using the u flag, you eliminate unnecessary identity escapes, as these are invalid in a u regex, e.g. \[ is fine, as it would start a character class without the backslash, but \: isn’t, as it’s a : with or without the backslash, so you need to remove the backslash.

Examples:

const unicodeString = "?",
  lineBreakString = "Hello, world!\n";

console.log(lineBreakString.replace(/.$/s, "").endsWith("\n")); // false
console.log(lineBreakString.match(/(.*).$/s) === null); // false
console.log(unicodeString.replace(/.$/su, "")); // ?
console.log(unicodeString.match(/(.*).$/su)[1]); // ?

// Now `split` can be made Unicode-aware:

const unicodeCharacterArray = unicodeString.split(/(?:)/su),
  lineBreakCharacterArray = lineBreakString.split(/(?:)/su);

unicodeCharacterArray.pop();
lineBreakCharacterArray.pop();
console.log(unicodeCharacterArray.join("")); // "?"
console.log(lineBreakCharacterArray.join("").endsWith("\n")); // false

Note that some graphemes consist of more than one code point, e.g. ?? which consists of the sequence (U+1F3F3), VS16 (U+FE0F), ZWJ (U+200D), (U+1F308). Here, even Array.from will split this into four “characters”. Matching those is possible with the Unicode property escapes sequence properties proposal.

First of all let's define where we have to use transaction?

I think correct answer is - when we need to make sure that sequence of actions will be finished together as one atomic operation or no changes will be made even if one of the actions fails.

It is well known practice to put business logic into services. So service methods may contain different actions which must be performed as a single logical unit of work. If so - then such method must be marked as Transactional. Of course, not every method requires such limitation, so you don't need to mark whole service as transactional.

And even more - don't forget to take into account that @Transactional obviously, may reduce method performance. In order to see whole picture you have to know transaction isolation levels. Knowing that might help you avoid using @Transactional where it's not necessarily needed.

Awesome answers I found here and I also tried this return statement see StatusCode(whatever code you wish) and it worked!!!

return Ok(new {
                    Token = new JwtSecurityTokenHandler().WriteToken(token),
                    Expiration = token.ValidTo,
                    username = user.FullName,
                    StatusCode = StatusCode(200)
                });

Here comes the structure of template I used:

  select
          /*this is a row number counter*/
          ( select @rownum := @rownum + 1 from ( select @rownum := 0 ) d2 ) 
          as rownumber,
          d3.*
  from 
  ( select d1.* from table_name d1 ) d3

And here is my working code:

select     
           ( select @rownum := @rownum + 1 from ( select @rownum := 0 ) d2 ) 
           as rownumber,
           d3.*
from
(   select     year( d1.date ), month( d1.date ), count( d1.id )
    from       maindatabase d1
    where      ( ( d1.date >= '2013-01-01' ) and ( d1.date <= '2014-12-31' ) )
    group by   YEAR( d1.date ), MONTH( d1.date ) ) d3

You can view the console for the iOS Simulator via desktop Safari. It's similar to the way you use desktop Safari to view the console for physical iOS devices.

Whenever the simulator is running and there's a webpage open, there'll be an option under the Develop menu in desktop safari that lets you see the iOS simulator console:

Develop -> iPhone Simulator -> site name

The semantics of setTimeout are roughly the same as in a web browser: the timeout arg is a minimum number of ms to wait before executing, not a guarantee. Furthermore, passing 0, a non-number, or a negative number, will cause it to wait a minimum number of ms. In Node, this is 1ms, but in browsers it can be as much as 50ms.

The reason for this is that there is no preemption of JavaScript by JavaScript. Consider this example:

setTimeout(function () {
  console.log('boo')
}, 100)
var end = Date.now() + 5000
while (Date.now() < end) ;
console.log('imma let you finish but blocking the event loop is the best bug of all TIME')

The flow here is:

1. schedule the timeout for 100ms.
2. busywait for 5000ms.
3. return to the event loop. check for pending timers and execute.

If this was not the case, then you could have one bit of JavaScript "interrupt" another. We'd have to set up mutexes and semaphors and such, to prevent code like this from being extremely hard to reason about:

var a = 100;
setTimeout(function () {
  a = 0;
}, 0);
var b = a; // 100 or 0?

The single-threadedness of Node's JavaScript execution makes it much simpler to work with than most other styles of concurrency. Of course, the trade-off is that it's possible for a badly-behaved part of the program to block the whole thing with an infinite loop.

Is this a better demon to battle than the complexity of preemption? That depends.

two for loops, one for rows, another for columns, output dataRow(i).Value. Watch out for nulls and DbNulls.

I've also had this error when trying to pull the changes into a branch which is not created from the upstream branch from which I'm trying to pull.

Eg - This creates a new branch matching night-version of upstream

git checkout upstream/night-version -b testnightversion

This creates a branch testmaster in local which matches the master branch of upstream.

git checkout upstream/master -b testmaster 

Now if I try to pull the changes of night-version into testmaster branch leads to this error.

git pull upstream night-version //while I'm in `master` cloned branch

I managed to solve this by navigating to proper branch and pull the changes.

git checkout testnightversion
git pull upstream night-version // works fine.

Balanced tree is a tree whose height is of order of log(number of elements in the tree).

height = O(log(n))
O, as in asymptotic notation i.e. height should have same or lower asymptotic
growth rate than log(n)
n: number of elements in the tree

The definition given "a tree is balanced of each sub-tree is balanced and the height of the two sub-trees differ by at most one" is followed by AVL trees.

Since, AVL trees are balanced but not all balanced trees are AVL trees, balanced trees don't hold this definition and internal nodes can be unbalanced in them. However, AVL trees require all internal nodes to be balanced.

Singleton is, of course, an "anti-pattern" (assuming a definition of a static with variable state).

If you want a fixed set of immutable value objects, then enums are the way to go. For a large, possibly open-ended set of values, you can use a Repository of some form - usually based on a Map implementation. Of course, when you are dealing with statics be careful with threading (either synchronise sufficiently widely or use a ConcurrentMap either checking that another thread hasn't beaten you or use some form of futures).

Today there is a simpler way to do that.

Just create the .env.local file in your root directory and set the variables there. In your case:

REACT_APP_API_KEY = 'my-secret-api-key'

Then you call it en your js file in that way:

process.env.REACT_APP_API_KEY

React supports environment variables since [email protected] .You don't need external package to do that.

https://facebook.github.io/create-react-app/docs/adding-custom-environment-variables#adding-development-environment-variables-in-env

*note: I propose .env.local instead of .env because create-react-app add this file to gitignore when create the project.

Files priority:

npm start: .env.development.local, .env.development, .env.local, .env

npm run build: .env.production.local, .env.production, .env.local, .env

npm test: .env.test.local, .env.test, .env (note .env.local is missing)

More info: https://facebook.github.io/create-react-app/docs/adding-custom-environment-variables

Name your Interface what it is. Truck. Not ITruck because it isn't an ITruck it is a Truck.

An Interface in Java is a Type. Then you have DumpTruck, TransferTruck, WreckerTruck, CementTruck, etc that implement Truck.

When you are using the Interface in place of a sub-class you just cast it to Truck. As in List<Truck>. Putting I in front is just Hungarian style notation tautology that adds nothing but more stuff to type to your code.

All modern Java IDE's mark Interfaces and Implementations and what not without this silly notation. Don't call it TruckClass that is tautology just as bad as the IInterface tautology.

If it is an implementation it is a class. The only real exception to this rule, and there are always exceptions, could be something like AbstractTruck. Since only the sub-classes will ever see this and you should never cast to an Abstract class it does add some information that the class is abstract and to how it should be used. You could still come up with a better name than AbstractTruck and use BaseTruck or DefaultTruck instead since the abstract is in the definition. But since Abstract classes should never be part of any public facing interface I believe it is an acceptable exception to the rule. Making the constructors protected goes a long way to crossing this divide.

And the Impl suffix is just more noise as well. More tautology. Anything that isn't an interface is an implementation, even abstract classes which are partial implementations. Are you going to put that silly Impl suffix on every name of every Class?

The Interface is a contract on what the public methods and properties have to support, it is also Type information as well. Everything that implements Truck is a Type of Truck.

Look to the Java standard library itself. Do you see IList, ArrayListImpl, LinkedListImpl? No, you see List and ArrayList, and LinkedList. Here is a nice article about this exact question. Any of these silly prefix/suffix naming conventions all violate the DRY principle as well.

Also, if you find yourself adding DTO, JDO, BEAN or other silly repetitive suffixes to objects then they probably belong in a package instead of all those suffixes. Properly packaged namespaces are self documenting and reduce all the useless redundant information in these really poorly conceived proprietary naming schemes that most places don't even internally adhere to in a consistent manner.

If all you can come up with to make your Class name unique is suffixing it with Impl, then you need to rethink having an Interface at all. So when you have a situation where you have an Interface and a single Implementation that is not uniquely specialized from the Interface you probably don't need the Interface.

Below is a fully functional example of what I believe you're trying to do (with a functional snippet).

Explanation

Based on your question, you seem to be modifying 1 property in state for all of your elements. That's why when you click on one, all of them are being changed.

In particular, notice that the state tracks an index of which element is active. When MyClickable is clicked, it tells the Container its index, Container updates the state, and subsequently the isActive property of the appropriate MyClickables.

Example

class Container extends React.Component {_x000D_
  state = {_x000D_
    activeIndex: null_x000D_
  }_x000D_
_x000D_
  handleClick = (index) => this.setState({ activeIndex: index })_x000D_
_x000D_
  render() {_x000D_
    return <div>_x000D_
      <MyClickable name="a" index={0} isActive={ this.state.activeIndex===0 } onClick={ this.handleClick } />_x000D_
      <MyClickable name="b" index={1} isActive={ this.state.activeIndex===1 } onClick={ this.handleClick }/>_x000D_
      <MyClickable name="c" index={2} isActive={ this.state.activeIndex===2 } onClick={ this.handleClick }/>_x000D_
    </div>_x000D_
  }_x000D_
}_x000D_
_x000D_
class MyClickable extends React.Component {_x000D_
  handleClick = () => this.props.onClick(this.props.index)_x000D_
  _x000D_
  render() {_x000D_
    return <button_x000D_
      type='button'_x000D_
      className={_x000D_
        this.props.isActive ? 'active' : 'album'_x000D_
      }_x000D_
      onClick={ this.handleClick }_x000D_
    >_x000D_
      <span>{ this.props.name }</span>_x000D_
    </button>_x000D_
  }_x000D_
}_x000D_
_x000D_
ReactDOM.render(<Container />, document.getElementById('app'))

button {_x000D_
  display: block;_x000D_
  margin-bottom: 1em;_x000D_
}_x000D_
_x000D_
.album>span:after {_x000D_
  content: ' (an album)';_x000D_
}_x000D_
_x000D_
.active {_x000D_
  font-weight: bold;_x000D_
}_x000D_
_x000D_
.active>span:after {_x000D_
  content: ' ACTIVE';_x000D_
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.6.1/react.min.js"></script>_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.6.1/react-dom.min.js"></script>_x000D_
<div id="app"></div>

Update: "Loops"

In response to a comment about a "loop" version, I believe the question is about rendering an array of MyClickable elements. We won't use a loop, but map, which is typical in React + JSX. The following should give you the same result as above, but it works with an array of elements.

// New render method for `Container`
render() {
  const clickables = [
    { name: "a" },
    { name: "b" },
    { name: "c" },
  ]

  return <div>
      { clickables.map(function(clickable, i) {
          return <MyClickable key={ clickable.name }
            name={ clickable.name }
            index={ i }
            isActive={ this.state.activeIndex === i }
            onClick={ this.handleClick }
          />
        } )
      }
  </div>
}

Or, the most performance-friendly way is to overload drawRect, simply like that:

@interface TPActionSheetButton : UIButton

@property (assign) BOOL drawsTopLine;
@property (assign) BOOL drawsBottomLine;
@property (assign) BOOL drawsRightLine;
@property (assign) BOOL drawsLeftLine;
@property (strong, nonatomic) UIColor * lineColor;

@end

@implementation TPActionSheetButton

- (void) drawRect:(CGRect)rect
{
    CGContextRef ctx = UIGraphicsGetCurrentContext();

    CGContextSetLineWidth(ctx, 0.5f * [[UIScreen mainScreen] scale]);
    CGFloat red, green, blue, alpha;
    [self.lineColor getRed:&red green:&green blue:&blue alpha:&alpha];
    CGContextSetRGBStrokeColor(ctx, red, green, blue, alpha);

    if(self.drawsTopLine) {
        CGContextBeginPath(ctx);
        CGContextMoveToPoint(ctx, CGRectGetMinX(rect), CGRectGetMinY(rect));
        CGContextAddLineToPoint(ctx, CGRectGetMaxX(rect), CGRectGetMinY(rect));
        CGContextStrokePath(ctx);
    }
    if(self.drawsBottomLine) {
        CGContextBeginPath(ctx);
        CGContextMoveToPoint(ctx, CGRectGetMinX(rect), CGRectGetMaxY(rect));
        CGContextAddLineToPoint(ctx, CGRectGetMaxX(rect), CGRectGetMaxY(rect));
        CGContextStrokePath(ctx);
    }
    if(self.drawsLeftLine) {
        CGContextBeginPath(ctx);
        CGContextMoveToPoint(ctx, CGRectGetMinX(rect), CGRectGetMinY(rect));
        CGContextAddLineToPoint(ctx, CGRectGetMinX(rect), CGRectGetMaxY(rect));
        CGContextStrokePath(ctx);
    }
    if(self.drawsRightLine) {
        CGContextBeginPath(ctx);
        CGContextMoveToPoint(ctx, CGRectGetMaxX(rect), CGRectGetMinY(rect));
        CGContextAddLineToPoint(ctx, CGRectGetMaxX(rect), CGRectGetMaxY(rect));
        CGContextStrokePath(ctx);
    }

    [super drawRect:rect];
}

@end

They're essentially the same... They both use swig for templating, they both use karma and mocha for tests, passport integration, nodemon, etc.

Why so similar? Mean.js is a fork of Mean.io and both initiatives were started by the same guy... Mean.io is now under the umbrella of the company Linnovate and looks like the guy (Amos Haviv) stopped his collaboration with this company and started Mean.js. You can read more about the reasons here.

Now... main (or little) differences you can see right now are:

SCAFFOLDING AND BOILERPLATE GENERATION

Mean.io uses a custom cli tool named 'mean'
Mean.js uses Yeoman Generators

MODULARITY

Mean.io uses a more self-contained node packages modularity with client and server files inside the modules.
Mean.js uses modules just in the front-end (for angular), and connects them with Express. Although they were working on vertical modules as well...

BUILD SYSTEM

Mean.io has recently moved to gulp
Mean.js uses grunt

DEPLOYMENT

Both have Dockerfiles in their respective repos, and Mean.io has one-click install on Google Compute Engine, while Mean.js can also be deployed with one-click install on Digital Ocean.

DOCUMENTATION

Mean.io has ok docs
Mean.js has AWESOME docs

COMMUNITY

Mean.io has a bigger community since it was the original boilerplate
Mean.js has less momentum but steady growth

On a personal level, I like more the philosophy and openness of MeanJS and more the traction and modules/packages approach of MeanIO. Both are nice, and you'll end probably modifying them, so you can't really go wrong picking one or the other. Just take them as starting point and as a learning exercise.

ALTERNATIVE “MEAN” SOLUTIONS

MEAN is a generic way (coined by Valeri Karpov) to describe a boilerplate/framework that takes "Mongo + Express + Angular + Node" as the base of the stack. You can find frameworks with this stack that use other denomination, some of them really good for RAD (Rapid Application Development) and building SPAs. Eg:

• Meteor. Now with official Angular support, represents a great MEAN stack
• StrongLoop Loopback (main Node.js core contributors and Express maintainers)
• Generator Angular Fullstack
• Sails.js
• Cleverstack
• Deployd, etc (there are more)

You also have Hackathon Starter. It doesn't have A of MEAN (it is 'MEN'), but it rocks..

Have fun!

No one mentioned Raw Post Data, but it's good to know, if posted data has no key, but only value, use Raw Post Data:

$postdata = file_get_contents("php://input");

PHP Man:

php://input is a read-only stream that allows you to read raw data from the request body. In the case of POST requests, it is preferable to use php://input instead of $HTTP_RAW_POST_DATA as it does not depend on special php.ini directives. Moreover, for those cases where $HTTP_RAW_POST_DATA is not populated by default, it is a potentially less memory intensive alternative to activating always_populate_raw_post_data. php://input is not available with enctype="multipart/form-data".

Unload and reload the project, in Visual Studio:

• right click your project in Solution Explorer
• select Unload Project
• select Reload Project

Fixed!

I found this solution to work the best (easiest), having run into the problem multiple times.

Source: https://alexdunn.org/2017/04/26/xamarin-tips-fixing-the-highlighting-drop-in-your-xamarin-android-projects/

You need the link inside to be clickable, meaning it needs a href with some content, and also, close() is a built-in function of window, so you need to change the name of the function to avoid a conflict.

<div id="upbutton"><a href="#" onclick="close2()">click to close</a></div>

Also if you want a real "button" instead of a link, you should use <input type="button"/> or <button/>.

A little mathematical logic theory here:

"NOT a AND NOT b" is the same as "NOT (a OR b)", so:

"a NOT -1 AND b NOT -1" is equivalent of "NOT (a is -1 OR b is -1)", which is opposite (Complement) of "(a is -1 OR b is -1)".

So if you want exact opposite result, df1 and df2 should be as below:

df1 = df[(df.a != -1) & (df.b != -1)]
df2 = df[(df.a == -1) | (df.b == -1)]

I ran into the same issue today, try running ur container with this command.

docker run --name mariadbtest -p 3306:3306 -e MYSQL_ROOT_PASSWORD=mypass -d mariadb/server:10.3

There is a function in c called isdigit(). That will suit you just fine. Example:

int var1 = 'h';
int var2 = '2';

if( isdigit(var1) )
{
   printf("var1 = |%c| is a digit\n", var1 );
}
else
{
   printf("var1 = |%c| is not a digit\n", var1 );
}
if( isdigit(var2) )
{
  printf("var2 = |%c| is a digit\n", var2 );
}
else
{
   printf("var2 = |%c| is not a digit\n", var2 );
}

From here

With multiple submits, when you need the value of the submit selected, this can be done quite easily. Just create a hidden field in your form and change its value depending on what button is clicked. For example, in the form, say you have:

<input type="hidden" id="Clicked" name="Clicked" value="" />
<button type="submit" class="btn btn-success ClickCheck" id="Create"> <i class="fa fa-file-pdf-o"> Create Bill</i></button>
<button type="submit" class="btn btn-success ClickCheck" id="Reset"> <i class="fa fa-times"> Reset</i></button>
<button type="submit" class="btn btn-success ClickCheck" id="StoreData"> <i class="fa fa-archive"> Save</i></button>

Using jQuery:

<script type="text/javascript">
    $(document).ready(function()
    {
        $('.ClickCheck').click(function()
        {
            var ButtonID = $(this).attr('id');
            $('#Clicked').val(ButtonID);
        });
    });
</script>

Then you can retrieve the value of the button clicked in the "Clicked" post variable

I think you just need to make

<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">

Before calling your .js files or code

There's, however, slight difference among all these options which

I found out that

If you do

    string URL = Server.MapPath("~");

or

    string URL = Server.MapPath("/");

or

    string URL = HttpRuntime.AppDomainAppPath;

your URL will display resources in your link like this:

    "file:///d:/InetPUB/HOME/Index/bin/Resources/HandlerDoc.htm"

But if you want your URL to show only virtual path not the resources location, you should do

    string URL = HttpRuntime.AppDomainAppVirtualPath; 

then, your URL is displaying a virtual path to your resources as below

    "http://HOME/Index/bin/Resources/HandlerDoc.htm"        

You can use [[UINavigationBar appearance] setTintColor:myColor];

Since iOS 7 you need to set [[UINavigationBar appearance] setBarTintColor:myColor]; and also [[UINavigationBar appearance] setTranslucent:NO].

[[UINavigationBar appearance] setBarTintColor:myColor];
[[UINavigationBar appearance] setTranslucent:NO];

While inserting multiple rows with a single INSERT statement is generally faster, it leads to a more complicated and often unsafe code. Below I present the best practices when it comes to inserting multiple records in one go using PHP.

To insert multiple new rows into the database at the same time, one needs to follow the following 3 steps:

1. Start transaction (disable autocommit mode)
2. Prepare INSERT statement
3. Execute it multiple times

Using database transactions ensures that the data is saved in one piece and significantly improves performance.

How to properly insert multiple rows using PDO

PDO is the most common choice of database extension in PHP and inserting multiple records with PDO is quite simple.

$pdo = new \PDO("mysql:host=localhost;dbname=test;charset=utf8mb4", 'user', 'password', [
    \PDO::ATTR_ERRMODE => \PDO::ERRMODE_EXCEPTION,
    \PDO::ATTR_EMULATE_PREPARES => false
]);

// Start transaction
$pdo->beginTransaction();

// Prepare statement
$stmt = $pdo->prepare('INSERT 
    INTO `pxlot` (realname,email,address,phone,status,regtime,ip) 
    VALUES (?,?,?,?,?,?,?)');

// Perform execute() inside a loop
// Sample data coming from a fictitious data set, but the data can come from anywhere
foreach ($dataSet as $data) {
    // All seven parameters are passed into the execute() in a form of an array
    $stmt->execute([$data['name'], $data['email'], $data['address'], getPhoneNo($data['name']), '0', $data['regtime'], $data['ip']]);
}

// Commit the data into the database
$pdo->commit();

How to properly insert multiple rows using mysqli

The mysqli extension is a little bit more cumbersome to use but operates on very similar principles. The function names are different and take slightly different parameters.

mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$mysqli = new \mysqli('localhost', 'user', 'password', 'database');
$mysqli->set_charset('utf8mb4');

// Start transaction
$mysqli->begin_transaction();

// Prepare statement
$stmt = $mysqli->prepare('INSERT 
    INTO `pxlot` (realname,email,address,phone,status,regtime,ip) 
    VALUES (?,?,?,?,?,?,?)');

// Perform execute() inside a loop
// Sample data coming from a fictitious data set, but the data can come from anywhere
foreach ($dataSet as $data) {
    // mysqli doesn't accept bind in execute yet, so we have to bind the data first
    // The first argument is a list of letters denoting types of parameters. It's best to use 's' for all unless you need a specific type
    // bind_param doesn't accept an array so we need to unpack it first using '...'
    $stmt->bind_param('sssssss', ...[$data['name'], $data['email'], $data['address'], getPhoneNo($data['name']), '0', $data['regtime'], $data['ip']]);
    $stmt->execute();
}

// Commit the data into the database
$mysqli->commit();

Performance

Both extensions offer the ability to use transactions. Executing prepared statement with transactions greatly improves performance, but it's still not as good as a single SQL query. However, the difference is so negligible that for the sake of conciseness and clean code it is perfectly acceptable to execute prepared statements multiple times. If you need a faster option to insert many records into the database at once, then chances are that PHP is not the right tool.

The solution provided by @user152949, as it was noted in commentaries, skips the first process and doesn't break when "exists" is set to true. Let me provide a fixed version:

#include <windows.h>
#include <tlhelp32.h>
#include <tchar.h>

bool IsProcessRunning(const TCHAR* const executableName) {
    PROCESSENTRY32 entry;
    entry.dwSize = sizeof(PROCESSENTRY32);

    const auto snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, NULL);

    if (!Process32First(snapshot, &entry)) {
        CloseHandle(snapshot);
        return false;
    }

    do {
        if (!_tcsicmp(entry.szExeFile, executableName)) {
            CloseHandle(snapshot);
            return true;
        }
    } while (Process32Next(snapshot, &entry));

    CloseHandle(snapshot);
    return false;
}

Anonymous types can implement interfaces via a dynamic proxy.

I wrote an extension method on GitHub and a blog post http://wblo.gs/feE to support this scenario.

The method can be used like this:

class Program
{
    static void Main(string[] args)
    {
        var developer = new { Name = "Jason Bowers" };

        PrintDeveloperName(developer.DuckCast<IDeveloper>());

        Console.ReadKey();
    }

    private static void PrintDeveloperName(IDeveloper developer)
    {
        Console.WriteLine(developer.Name);
    }
}

public interface IDeveloper
{
    string Name { get; }
}

I just used the following:

import unicodedata
message = unicodedata.normalize("NFKD", message)

Check what documentation says about it:

unicodedata.normalize(form, unistr) Return the normal form form for the Unicode string unistr. Valid values for form are ‘NFC’, ‘NFKC’, ‘NFD’, and ‘NFKD’.

The Unicode standard defines various normalization forms of a Unicode string, based on the definition of canonical equivalence and compatibility equivalence. In Unicode, several characters can be expressed in various way. For example, the character U+00C7 (LATIN CAPITAL LETTER C WITH CEDILLA) can also be expressed as the sequence U+0043 (LATIN CAPITAL LETTER C) U+0327 (COMBINING CEDILLA).

For each character, there are two normal forms: normal form C and normal form D. Normal form D (NFD) is also known as canonical decomposition, and translates each character into its decomposed form. Normal form C (NFC) first applies a canonical decomposition, then composes pre-combined characters again.

In addition to these two forms, there are two additional normal forms based on compatibility equivalence. In Unicode, certain characters are supported which normally would be unified with other characters. For example, U+2160 (ROMAN NUMERAL ONE) is really the same thing as U+0049 (LATIN CAPITAL LETTER I). However, it is supported in Unicode for compatibility with existing character sets (e.g. gb2312).

The normal form KD (NFKD) will apply the compatibility decomposition, i.e. replace all compatibility characters with their equivalents. The normal form KC (NFKC) first applies the compatibility decomposition, followed by the canonical composition.

Even if two unicode strings are normalized and look the same to a human reader, if one has combining characters and the other doesn’t, they may not compare equal.

Solves it for me. Simple and easy.

Use:

if (function_exists('curl_file_create')) { // php 5.5+
  $cFile = curl_file_create($file_name_with_full_path);
} else { // 
  $cFile = '@' . realpath($file_name_with_full_path);
}
$post = array('extra_info' => '123456','file_contents'=> $cFile);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,$target_url);
curl_setopt($ch, CURLOPT_POST,1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
$result=curl_exec ($ch);
curl_close ($ch);

You can also refer:

http://blog.derakkilgo.com/2009/06/07/send-a-file-via-post-with-curl-and-php/

Important hint for PHP 5.5+:

Now we should use https://wiki.php.net/rfc/curl-file-upload but if you still want to use this deprecated approach then you need to set curl_setopt($ch, CURLOPT_SAFE_UPLOAD, false);

.index.tolist() is another function which you can get the index as a list:

In [1391]: datasheet.head(20).index.tolist()
Out[1391]: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19]

The easiest solution is to simply tell Xcode to compile everything as Objective C++.

Set your project or target settings for Compile Sources As to Objective C++ and recompile.

Then you can use C++ or Objective C everywhere, for example:

void CPPObject::Function( ObjectiveCObject* context, NSView* view )
{
   [context renderbufferStorage:GL_RENDERBUFFER fromDrawable:(CAEAGLLayer*)view.layer]
}

This has the same affect as renaming all your source files from .cpp or .m to .mm.

There are two minor downsides to this: clang cannot analyse C++ source code; some relatively weird C code does not compile under C++.

pyspark version:

  df = <source data>
  df.printSchema()

  from pyspark.sql.types import *

  # Change column type
  df_new = df.withColumn("myColumn", df["myColumn"].cast(IntegerType()))
  df_new.printSchema()
  df_new.select("myColumn").show()

In this particular case the clearest solution is the S.Lott answer

But in some complex logical conditions I would prefer use some boolean algebra to get a clear solution.

Using De Morgan's law ¬(A^B) = ¬Av¬B

not (u0 <= u and u < u0+step)
(not u0 <= u) or (not u < u0+step)
u0 > u or u >= u0+step

then

if u0 > u or u >= u0+step:
    pass

... in this case the «clear» solution is not more clear :P

replace now.getTime() with your long value.

//GET UTC time for current date
        Date now= new Date();
        //LocalDateTime utcDateTimeForCurrentDateTime = Instant.ofEpochMilli(now.getTime()).atZone(ZoneId.of("UTC")).toLocalDateTime();
        LocalDate localDate = Instant.ofEpochMilli(now.getTime()).atZone(ZoneId.of("UTC")).toLocalDate();
        DateTimeFormatter dTF2 = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm");
        System.out.println(" formats as " + dTF2.format(utcDateTimeForCurrentDateTime));

I've found the best way to program the font sizes of a website are to define a base font size for the body and then use em's (or rem's) for every other font-size I declare after that. That's personal preference I suppose, but it's served me well and also made it very easy to incorporate a more responsive design.

As far as using rem units go, I think it's good to find a balance between being progressive in your code, but to also offer support for older browsers. Check out this link about browser support for rem units, that should help out a good amount on your decision.

You can get that error if you have an object with the same name as the schema. For example:

create sequence s2;

begin
  s2.a;
end;
/

ORA-06550: line 2, column 6:
PLS-00302: component 'A' must be declared
ORA-06550: line 2, column 3:
PL/SQL: Statement ignored

When you refer to S2.MY_FUNC2 the object name is being resolved so it doesn't try to evaluate S2 as a schema name. When you just call it as MY_FUNC2 there is no confusion, so it works.

The documentation explains name resolution. The first piece of the qualified object name - S2 here - is evaluated as an object on the current schema before it is evaluated as a different schema.

It might not be a sequence; other objects can cause the same error. You can check for the existence of objects with the same name by querying the data dictionary.

select owner, object_type, object_name
from all_objects
where object_name = 'S2';

I can see that you have received many correct answers and very detailed one. I believe you are not testing it for very large prime numbers. And your only concern is to avoid printing intermediary prime number by your program.

A tiny change your program will do the trick.

Keep your logic same way and just pull out the print statement outside of loop. Break outer loop after n prime numbers.

import java.util.Scanner;
/**
 * Calculates the nth prime number
 * @author {Zyst}
 */
public class Prime {
    public static void main(String[] args) {

        Scanner input = new Scanner(System.in);
        int n, 
            i = 2, 
            x = 2;

        System.out.printf("This program calculates the nth Prime number\n");
        System.out.printf("Please enter the nth prime number you want to find:");
        n = input.nextInt();

        for(i = 2, x = 2; n > 0; i++) {
            for(x = 2; x < i; x++) {
                if(i % x == 0) {
                    break;
                }
            }
            if(x == i) {
                n--;
            }
        }
        System.out.printf("\n%d is prime", x);

    }
}

tl;dr

in ~/.ssh/config put

PubkeyAcceptedKeyTypes=+ssh-dss

Scenario If you are using a version of openSSH > 7, like say on a touchbar MacBook Pro it is ssh -V
OpenSSH_7.4p1, LibreSSL 2.5.0

You also had an older Mac which originally had your key you put onto Github, it's possible that is using an id_dsa key. OpenSSH v7 doesn't put in by default the use of these DSA keys (which include this ssh-dss) , but you can still add it back by putting the following code into your ~/.ssh/config

PubkeyAcceptedKeyTypes=+ssh-dss

Source that worked for me is this Gentoo newsletter

Now you can at least use GitHub and then fix your keys to RSA.

Although I generally agree that the named arguments approach is useful and flexible (unless you care about the order, in which case arguments is easiest), I do have concerns about the cost of the mbeasley approach (using defaults and extends). This is an extreme amount of cost to take for pulling default values. First, the defaults are defined inside the function, so they are repopulated on every call. Second, you can easily read out the named values and set the defaults at the same time using ||. There is no need to create and merge yet another new object to get this information.

function load(context) {
   var parameter1 = context.parameter1 || defaultValue1,
       parameter2 = context.parameter2 || defaultValue2;

   // do stuff
}

This is roughly the same amount of code (maybe slightly more), but should be a fraction of the runtime cost.

You can do this quite easily with lxml. First install it:

[sudo] pip install lxml

Here is a recursive function I wrote that does the heavy lifting for you:

from lxml import objectify as xml_objectify


def xml_to_dict(xml_str):
    """ Convert xml to dict, using lxml v3.4.2 xml processing library """
    def xml_to_dict_recursion(xml_object):
        dict_object = xml_object.__dict__
        if not dict_object:
            return xml_object
        for key, value in dict_object.items():
            dict_object[key] = xml_to_dict_recursion(value)
        return dict_object
    return xml_to_dict_recursion(xml_objectify.fromstring(xml_str))

xml_string = """<?xml version="1.0" encoding="UTF-8"?><Response><NewOrderResp>
<IndustryType>Test</IndustryType><SomeData><SomeNestedData1>1234</SomeNestedData1>
<SomeNestedData2>3455</SomeNestedData2></SomeData></NewOrderResp></Response>"""

print xml_to_dict(xml_string)

The below variant preserves the parent key / element:

def xml_to_dict(xml_str):
    """ Convert xml to dict, using lxml v3.4.2 xml processing library, see http://lxml.de/ """
    def xml_to_dict_recursion(xml_object):
        dict_object = xml_object.__dict__
        if not dict_object:  # if empty dict returned
            return xml_object
        for key, value in dict_object.items():
            dict_object[key] = xml_to_dict_recursion(value)
        return dict_object
    xml_obj = objectify.fromstring(xml_str)
    return {xml_obj.tag: xml_to_dict_recursion(xml_obj)}

If you want to only return a subtree and convert it to dict, you can use Element.find() to get the subtree and then convert it:

xml_obj.find('.//')  # lxml.objectify.ObjectifiedElement instance

See the lxml docs here. I hope this helps!

Pretty self explanatory.

repeat{
  statements...
  if(condition){
    break
  }
}

Or something like that I would think. To get the effect of the do while loop, simply check for your condition at the end of the group of statements.

There is angular service written angular file server Uses FileSaver.js and Blob.js

 vm.download = function(text) {
    var data = new Blob([text], { type: 'text/plain;charset=utf-8' });
    FileSaver.saveAs(data, 'text.txt');
  };

1.Add xml code in your layout for displaying maps.

2.Enable google maps api then get api key place that below.

<fragment
                   android:id="@+id/map"
               android:name="com.google.android.gms.maps.MapFragment"
                    android:layout_width="match_parent"
                    android:value="ADD-API-KEY"
                    android:layout_height="250dp"
                    tools:layout="@layout/newmaplayout" />
        <ImageView
            android:id="@+id/transparent_image"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:src="@color/transparent" />

3.Add this code in oncreate.

 MapFragment mapFragment = (MapFragment) getFragmentManager().findFragmentById(R.id.map);
    mapFragment.getMapAsync(UpadateProfile.this);

4.Add this code after oncreate. then access current location with marker placed in that

@Override
public void onMapReady(GoogleMap rmap) {
    DO WHATEVER YOU WANT WITH GOOGLEMAP
    map = rmap;
    setUpMap();
}
public void setUpMap() {
    map.setMapType(GoogleMap.MAP_TYPE_HYBRID);
  map.setMyLocationEnabled(true);
    map.setTrafficEnabled(true);
    map.setIndoorEnabled(true);
    map.getCameraPosition();
    map.setBuildingsEnabled(true);
    map.getUiSettings().setZoomControlsEnabled(true);
    markerOptions = new MarkerOptions();
    markerOptions.title("Outlet Location");
    map.setOnMapClickListener(new GoogleMap.OnMapClickListener() {
        @Override
        public void onMapClick(LatLng point) {
            map.clear();
            markerOptions.position(point);
            map.animateCamera(CameraUpdateFactory.newLatLng(point));
            map.addMarker(markerOptions);
            String all_vals = String.valueOf(point);
            String[] separated = all_vals.split(":");
            String latlng[] = separated[1].split(",");
            MyLat = Double.parseDouble(latlng[0].trim().substring(1));
            MyLong = Double.parseDouble(latlng[1].substring(0,latlng[1].length()-1));
            markerOptions.title("Outlet Location");
            getLocation(MyLat,MyLong);
        }
    });
}
public void getLocation(double lat, double lng) {
    Geocoder geocoder = new Geocoder(UpadateProfile.this, Locale.getDefault());
    try {
        List<Address> addresses = geocoder.getFromLocation(lat, lng, 1);
   } catch (IOException e) {
         TODO Auto-generated catch block
        e.printStackTrace();
        Toast.makeText(this,e.getMessage(),Toast.LENGTH_SHORT).show();
    }
}
@Override
public void onLocationChanged(Location location) {
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onProviderDisabled(String provider) {
}

if (string.IsNullOrEmpty(myString)) 
{
  . . .
  . . .
}

In very simple terms, I like to think about it like this:

• real is the actual amount of time it took to run the command (as if you had timed it with a stopwatch)

• user and sys are how much 'work' the CPU had to do to execute the command. This 'work' is expressed in units of time.

Generally speaking:

• user is how much work the CPU did to run to run the command's code
• sys is how much work the CPU had to do to handle 'system overhead' type tasks (such as allocating memory, file I/O, ect.) in order to support the running command

Since these last two times are counting 'work' done, they don't include time a thread might have spent waiting (such as waiting on another process or for disk I/O to finish).

real, however, is a measure of actual runtime and not 'work', so it does include any time spent waiting.

To validate for only letters and spaces, try this

String name1_exp = "^[a-zA-Z]+[\-'\s]?[a-zA-Z ]+$";

Z=np.array([1.0,1.0,1.0,1.0])  

def func(TempLake,Z):
    A=TempLake
    B=Z
    return A*B
Nlayers=Z.size
N=3
TempLake=np.zeros((N+1,Nlayers))
kOUT=np.vectorize(func)(TempLake,Z)

This works too , instead of looping , just vectorize however read below notes from the scipy documentation : https://docs.scipy.org/doc/numpy/reference/generated/numpy.vectorize.html

The vectorize function is provided primarily for convenience, not for performance. The implementation is essentially a for loop.

If otypes is not specified, then a call to the function with the first argument will be used to determine the number of outputs. The results of this call will be cached if cache is True to prevent calling the function twice. However, to implement the cache, the original function must be wrapped which will slow down subsequent calls, so only do this if your function is expensive.

var now = DateTime.Now;
var first = new DateTime(now.Year, now.Month, 1);
var last = first.AddMonths(1).AddDays(-1);

You could also use DateTime.DaysInMonth method:

var last = new DateTime(now.Year, now.Month, DateTime.DaysInMonth(now.Year, now.Month));

The general idea is to add, commit and push your files to the GitHub repo.

First you need to clone your GitHub repo.
Then, you would git add all the files from your other folder: one trick is to specify an alternate working tree when git add'ing your files.

git --work-tree=yourSrcFolder add .

(done from the root directory of your cloned Git repo, then git commit -m "a msg", and git push origin master)

That way, you keep separate your initial source folder, from your Git working tree.

Note that since early December 2012, you can create new files directly from GitHub:

ProTip™: You can pre-fill the filename field using just the URL.
Typing ?filename=yournewfile.txt at the end of the URL will pre-fill the filename field with the name yournewfile.txt.

Short answer no :)

But you could just use the same CSS for the hover like so:

a:hover, .hoverclass {
    background:red;
}

Maybe if you explain why you need the class added, there may be a better solution?

SEL is a type that represents a selector in Objective-C. The @selector() keyword returns a SEL that you describe. It's not a function pointer and you can't pass it any objects or references of any kind. For each variable in the selector (method), you have to represent that in the call to @selector. For example:

-(void)methodWithNoParameters;
SEL noParameterSelector = @selector(methodWithNoParameters);

-(void)methodWithOneParameter:(id)parameter;
SEL oneParameterSelector = @selector(methodWithOneParameter:); // notice the colon here

-(void)methodWIthTwoParameters:(id)parameterOne and:(id)parameterTwo;
SEL twoParameterSelector = @selector(methodWithTwoParameters:and:); // notice the parameter names are omitted

Selectors are generally passed to delegate methods and to callbacks to specify which method should be called on a specific object during a callback. For instance, when you create a timer, the callback method is specifically defined as:

-(void)someMethod:(NSTimer*)timer;

So when you schedule the timer you would use @selector to specify which method on your object will actually be responsible for the callback:

@implementation MyObject

-(void)myTimerCallback:(NSTimer*)timer
{
    // do some computations
    if( timerShouldEnd ) {
      [timer invalidate];
    }
}

@end

// ...

int main(int argc, const char **argv)
{
    // do setup stuff
    MyObject* obj = [[MyObject alloc] init];
    SEL mySelector = @selector(myTimerCallback:);
    [NSTimer scheduledTimerWithTimeInterval:30.0 target:obj selector:mySelector userInfo:nil repeats:YES];
    // do some tear-down
    return 0;
}

In this case you are specifying that the object obj be messaged with myTimerCallback every 30 seconds.

I went to a bunch of SQL Server 2008 talks in PASS 2008, the only 'killer feature' from my point of view is extended events.

There are lots of great improvements, but that was the only one that got close to being a game changer for me. Table value parameters and merge were probably my next favourite. Day-to-day, IntelliSense is a huge win.. But this isn't really specific to SQL Server 2008, just the SQL Server 2008 toolset (other tools can give you similar IntelliSense against SQL Server 2005, 2000, etc.).

Using the latest versions of Subclipse, you can actually view them without using the cmd prompt. On the file, simply right-click => Team => Switch to another branch/tag/revision. Besides the revision field, you click select, and you'll see all the versions of that file.

Right-click the table in DB2 Control Center and chose Generate DDL... That will give you everything you need and more.

/
^                                             # start of string
(                                             # first group start
  (?:
    (?:[^?+*{}()[\]\\|]+                      # literals and ^, $
     | \\.                                    # escaped characters
     | \[ (?: \^?\\. | \^[^\\] | [^\\^] )     # character classes
          (?: [^\]\\]+ | \\. )* \]
     | \( (?:\?[:=!]|\?<[=!]|\?>)? (?1)?? \)  # parenthesis, with recursive content
     | \(\? (?:R|[+-]?\d+) \)                 # recursive matching
     )
    (?: (?:[?+*]|\{\d+(?:,\d*)?\}) [?+]? )?   # quantifiers
  | \|                                        # alternative
  )*                                          # repeat content
)                                             # end first group
$                                             # end of string
/

This is a recursive regex, and is not supported by many regex engines. PCRE based ones should support it.

Without whitespace and comments:

/^((?:(?:[^?+*{}()[\]\\|]+|\\.|\[(?:\^?\\.|\^[^\\]|[^\\^])(?:[^\]\\]+|\\.)*\]|\((?:\?[:=!]|\?<[=!]|\?>)?(?1)??\)|\(\?(?:R|[+-]?\d+)\))(?:(?:[?+*]|\{\d+(?:,\d*)?\})[?+]?)?|\|)*)$/

.NET does not support recursion directly. (The (?1) and (?R) constructs.) The recursion would have to be converted to counting balanced groups:

^                                         # start of string
(?:
  (?: [^?+*{}()[\]\\|]+                   # literals and ^, $
   | \\.                                  # escaped characters
   | \[ (?: \^?\\. | \^[^\\] | [^\\^] )   # character classes
        (?: [^\]\\]+ | \\. )* \]
   | \( (?:\?[:=!]
         | \?<[=!]
         | \?>
         | \?<[^\W\d]\w*>
         | \?'[^\W\d]\w*'
         )?                               # opening of group
     (?<N>)                               #   increment counter
   | \)                                   # closing of group
     (?<-N>)                              #   decrement counter
   )
  (?: (?:[?+*]|\{\d+(?:,\d*)?\}) [?+]? )? # quantifiers
| \|                                      # alternative
)*                                        # repeat content
$                                         # end of string
(?(N)(?!))                                # fail if counter is non-zero.

Compacted:

^(?:(?:[^?+*{}()[\]\\|]+|\\.|\[(?:\^?\\.|\^[^\\]|[^\\^])(?:[^\]\\]+|\\.)*\]|\((?:\?[:=!]|\?<[=!]|\?>|\?<[^\W\d]\w*>|\?'[^\W\d]\w*')?(?<N>)|\)(?<-N>))(?:(?:[?+*]|\{\d+(?:,\d*)?\})[?+]?)?|\|)*$(?(N)(?!))

From the comments:

Will this validate substitutions and translations?

It will validate just the regex part of substitutions and translations. s/<this part>/.../

It is not theoretically possible to match all valid regex grammars with a regex.

It is possible if the regex engine supports recursion, such as PCRE, but that can't really be called regular expressions any more.

Indeed, a "recursive regular expression" is not a regular expression. But this an often-accepted extension to regex engines... Ironically, this extended regex doesn't match extended regexes.

"In theory, theory and practice are the same. In practice, they're not." Almost everyone who knows regular expressions knows that regular expressions does not support recursion. But PCRE and most other implementations support much more than basic regular expressions.

using this with shell script in the grep command , it shows me some error.. grep: Invalid content of {} . I am making a script that could grep a code base to find all the files that contain regular expressions

This pattern exploits an extension called recursive regular expressions. This is not supported by the POSIX flavor of regex. You could try with the -P switch, to enable the PCRE regex flavor.

Regex itself "is not a regular language and hence cannot be parsed by regular expression..."

This is true for classical regular expressions. Some modern implementations allow recursion, which makes it into a Context Free language, although it is somewhat verbose for this task.

I see where you're matching []()/\. and other special regex characters. Where are you allowing non-special characters? It seems like this will match ^(?:[\.]+)$, but not ^abcdefg$. That's a valid regex.

[^?+*{}()[\]\\|] will match any single character, not part of any of the other constructs. This includes both literal (a - z), and certain special characters (^, $, .).

Since strings are lists of characters in Python, we can concatenate strings the same way we concatenate lists (with the + sign):

{{ var1 + '-' + var2 + '-' + var3 }}

If you want to pipe the resulting string to some filter, make sure you enclose the bits in parentheses:

e.g. To concatenate our 3 vars, and get a sha512 hash:

{{ (var1 + var2 + var3) | hash('sha512') }}

Note: this works on Ansible 2.3. I haven't tested it on earlier versions.

you should try:

wget \
        --no-cookies \
        --header "Cookie: oraclelicense=accept-securebackup-cookie" \
        http://download.oracle.com/otn-pub/java/jdk/8u172-b11/a58eab1ec242421181065cdc37240b08/jdk-8u172-linux-x64.tar.gz \
        -O java.tar.gz

Here is an alternative that worked for me:

$('div#somediv').css({'width': '70%'});

optionalUsers.orElseThrow(() -> new UsernameNotFoundException("Username not found"));

Interfaces cannot require instance variables to be defined -- only methods.

(Variables can be defined in interfaces, but they do not behave as might be expected: they are treated as final static.)

Happy coding.

Functions are not allowed to have side-effects such as altering table contents.

Stored Procedures are.

If a function called a stored procedure, the function would become able to have side-effects.

So, sorry, but no, you can't call a stored procedure from a function.

I found this page after doing some sample exercises and having the exact same puzzlement.

============== I went from this code as provide by the sample ===============

public static void main(String[] args) throws IOException {

    Map wordMap = new HashMap();
    if (args.length > 0) {
        for (int i = 0; i < args.length; i++) {
            countWord(wordMap, args[i]);
        }
    } else {
        getWordFrequency(System.in, wordMap);
    }
    for (Iterator i = wordMap.entrySet().iterator(); i.hasNext();) {
        Map.Entry entry = (Map.Entry) i.next();
        System.out.println(entry.getKey() + " :\t" + entry.getValue());
    }

====================== To This code ========================

public static void main(String[] args) throws IOException {
    // replace with TreeMap to get them sorted by name
    Map<String, Integer> wordMap = new HashMap<String, Integer>();
    if (args.length > 0) {
        for (int i = 0; i < args.length; i++) {
            countWord(wordMap, args[i]);
        }
    } else {
        getWordFrequency(System.in, wordMap);
    }
    for (Iterator<Entry<String, Integer>> i = wordMap.entrySet().iterator(); i.hasNext();) {
        Entry<String, Integer> entry =   i.next();
        System.out.println(entry.getKey() + " :\t" + entry.getValue());
    }

}

===============================================================================

It may be safer but took 4 hours to demuddle the philosophy...

Take a look on that link.

You need only to install express module of node js.

var express = require('express');
var app = express();

app.use('/Folder', express.static(__dirname + '/Folder'));

You can access your file like http://hostname/Folder/file.zip

There is no inherent reason that a simple batch file would run in XP but not Windows 10. It is possible you are referencing a command or a 3rd party utility that no longer exists. To know more about what is actually happening, you will need to do one of the following:

• Add a pause to the batch file so that you can see what is happening before it exits.
  1. Right click on one of the .bat files and select "edit". This will open the file in notepad.
  2. Go to the very end of the file and add a new line by pressing "enter".
  3. type pause.
  4. Save the file.
  5. Run the file again using the same method you did before.

- OR -

• Run the batch file from a static command prompt so the window does not close.
  1. In the folder where the .bat files are located, hold down the "shift" key and right click in the white space.
  2. Select "Open Command Window Here".
  3. You will now see a new command prompt. Type in the name of the batch file and press enter.

Once you have done this, I recommend creating a new question with the output you see after using one of the methods above.

Just reinstall Python in another folder, e.g. c:\python. After that you won't be bothered by pip wanted administrator privileges.

Windows 10 Pro x64 user.

If you are using rails, you can use #present?

require 'rails'

nil.present?  # ==> false (Works on nil)
''.present?    # ==> false (Works on strings)
'  '.present?  # ==> false (Works on blank strings)
[].present?    # ==> false(Works on arrays)
false.present? # ==> false (Works on boolean)

So, conversely to check for nil or zero length use !present?

!(nil.present?)  # ==> true
!(''.present?)    # ==> true
!('  '.present?)  # ==> true
!([].present?)    # ==> true
!(false.present?) # ==> true

Remove the files ib_logfileN (N being the number) from the MAMP/db/mysql56 folder.

Then restart MAMP.

Should Work!

The other clean solution if you don't want to pop all stack entries...

getSupportFragmentManager().popBackStack(null, FragmentManager.POP_BACK_STACK_INCLUSIVE);
getSupportFragmentManager().beginTransaction().replace(R.id.home_activity_container, fragmentInstance).addToBackStack(null).commit();

This will clean the stack first and then load a new fragment, so at any given point you'll have only single fragment in stack

I find std::getline() is often the simplest. The optional delimiter parameter means it's not just for reading "lines":

#include <sstream>
#include <iostream>
#include <vector>

using namespace std;

int main() {
    vector<string> strings;
    istringstream f("denmark;sweden;india;us");
    string s;    
    while (getline(f, s, ';')) {
        cout << s << endl;
        strings.push_back(s);
    }
}

Set a minimum width at the top most layout.

android:minWidth="300dp"

For example:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"
  xmlns:android="http://schemas.android.com/apk/res/android" android:minWidth="300dp">

<!-- Put remaining contents here -->

</LinearLayout>

In laravel 5.6 we can pass parameters between Middlewares for example:

FirstMiddleware

public function handle($request, Closure $next, ...$params)
{
    //some code
    return $next($request->merge(['key' => 'value']));
}

SecondMiddleware

public function handle($request, Closure $next, ...$params)
{
    //some code
    dd($request->all());
}

If you're just using a vanilla form (not a ModelForm), you can set a Field initial value ( https://docs.djangoproject.com/en/2.2/ref/forms/fields/#django.forms.Field.initial ) like

class MyForm(forms.Form):
    my_field = forms.BooleanField(initial=True)

If you're using a ModelForm, you can set a default value on the model field ( https://docs.djangoproject.com/en/2.2/ref/models/fields/#default ), which will apply to the resulting ModelForm, like

class MyModel(models.Model):
    my_field = models.BooleanField(default=True)

Finally, if you want to dynamically choose at runtime whether or not your field will be selected by default, you can use the initial parameter to the form when you initialize it:

form = MyForm(initial={'my_field':True})

If you're on Oracle 11g, you may also want to check out dbms_index_utl.

There are 10 events in ASP.NET page life cycle, and the sequence is:

1. Init
2. Load view state
3. Post back data
4. Load
5. Validate
6. Events
7. Pre-render
8. Save view state
9. Render
10. Unload

Below is a pictorial view of ASP.NET Page life cycle with what kind of code is expected in that event. I suggest you read this article I wrote on the ASP.NET Page life cycle, which explains each of the 10 events in detail and when to use them.

Image source: my own article at https://www.c-sharpcorner.com/uploadfile/shivprasadk/Asp-Net-application-and-page-life-cycle/ from 19 April 2010

I have tried many options and unsure as to why a few solutions suggested above work on one machine and not on others.

A solution that works and that is simple and can work per container is:

docker run --ulimit memlock=819200000:819200000 -h <docker_host_name> --name=current -v /home/user_home:/user_home -i -d -t docker_user_name/image_name

I answered my problem with a default width for all columns and cells, like below:

int width = 15; // Where width is number of caracters 
sheet.setDefaultColumnWidth(width);

The issue here is that JSON, as a format, is generally parsed in full and then handled in-memory, which for such a large amount of data is clearly problematic.

The solution to this is to work with the data as a stream - reading part of the file, working with it, and then repeating.

The best option appears to be using something like ijson - a module that will work with JSON as a stream, rather than as a block file.

Edit: Also worth a look - kashif's comment about json-streamer and Henrik Heino's comment about bigjson.

ADD go /usr/local/

will copy the contents of your local go directory in the /usr/local/ directory of your docker image.

To copy the go directory itself in /usr/local/ use:

ADD go /usr/local/go

or

COPY go /usr/local/go

Move your image in the (hi-res) drawable to drawable-xxhdpi. But in app development, you do not need to use large image. It will increase your APK file size.

Tried all these methods for conversion ->

    public static void main(String[] args) {

    Object myObj = 10.101;
    System.out.println("Cast to Double: "+((Double)myObj)+10.99);   //concates

    Double d1 = new Double(myObj.toString());
    System.out.println("new Object String - Cast to Double: "+(d1+10.99));  //works

    double d3 = (double) myObj;
    System.out.println("new Object - Cast to Double: "+(d3+10.99));     //works

    double d4 = Double.valueOf((Double)myObj);
    System.out.println("Double.valueOf(): "+(d4+10.99));        //works

    double d5 = ((Number) myObj).doubleValue();
    System.out.println("Cast to Number and call doubleValue(): "+(d5+10.99));       //works

    double d2= Double.parseDouble((String) myObj);
    System.out.println("Cast to String to cast to Double: "+(d2+10));       //works
}

After looking at all the answers and not being happy with most of them, this is what I came up with. I know I am very late to the conversation, but here it is anyway.

function secsToTime(secs){
  var time = new Date(); 
  // create Date object and set to today's date and time
  time.setHours(parseInt(secs/3600) % 24);
  time.setMinutes(parseInt(secs/60) % 60);
  time.setSeconds(parseInt(secs%60));
  time = time.toTimeString().split(" ")[0];
  // time.toString() = "HH:mm:ss GMT-0800 (PST)"
  // time.toString().split(" ") = ["HH:mm:ss", "GMT-0800", "(PST)"]
  // time.toTimeString().split(" ")[0]; = "HH:mm:ss"
  return time;
}

I create a new Date object, change the time to my parameters, convert the Date Object to a time string, and removed the additional stuff by splitting the string and returning only the part that need.

I thought I would share this approach, since it removes the need for regex, logic and math acrobatics to get the results in "HH:mm:ss" format, and instead it relies on built in methods.

You may want to take a look at the documentation here: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date

Try Making the Child Form's StartPosition Property set to Center Parent. This you can select from the form Properties.

It is just not a valid Java syntax. You can do

names = new String[] {"Ankit","Bohra","Xyz"};

I had this error because I registered the wrong class in this line of code:

JAXBContext context = JAXBContext.newInstance(MyRootXmlClass.class);

I got trouble to get it so I post pictures showing different options:

Chrome 75.0.3770.142 [29 July 2018]

Very very similar UI since at least Chrome 38.0.2125.111 [11 December 2014]

In tab Sources :

When button is activated, you can Pause On Caught Exceptions with the checkbox below:

Previous versions

Incorrect:

SELECT * FROM customers WHERE name LIKE '%Bob Smith%';

Instead:

select count(*)
from rearp.customers c
where c.name  LIKE '%Bob smith.8%';

select count will just query (totals)

C will link the db.table to the names row you need this to index

LIKE should be obvs

8 will call all references in DB 8 or less (not really needed but i like neatness)

One point I noticed with Primefaces 3.4 and Netbeans 7.2:

Remove the Netbeans auto-filled parameters for function handleFileUpload i.e. (event) otherwise event could be null.

<h:form>
    <p:fileUpload fileUploadListener="#{fileUploadController.handleFileUpload(event)}"
        mode="advanced" 
        update="messages"
        sizeLimit="100000" 
        allowTypes="/(\.|\/)(gif|jpe?g|png)$/"/>

    <p:growl id="messages" showDetail="true"/>
</h:form>

i tried using the same ng-click for two elements with same name showDetail2('abc')

it is working for me . can you check rest of the code which may be breaking you to move further.

here is the sample jsfiddle i tried:

See the comment in the onActivityDestroyed function.

Works with SDK target version 14> :

import android.app.Activity;
import android.app.Application;
import android.os.Bundle;
import android.util.Log;

public class AppLifecycleHandler implements Application.ActivityLifecycleCallbacks {

    public static int active = 0;

    @Override
    public void onActivityStopped(Activity activity) {
        Log.i("Tracking Activity Stopped", activity.getLocalClassName());
        active--;
    }

    @Override
    public void onActivityStarted(Activity activity) {
        Log.i("Tracking Activity Started", activity.getLocalClassName());
        active++;
    }

    @Override
    public void onActivitySaveInstanceState(Activity activity, Bundle outState) {
        Log.i("Tracking Activity SaveInstanceState", activity.getLocalClassName());
    }

    @Override
    public void onActivityResumed(Activity activity) {
        Log.i("Tracking Activity Resumed", activity.getLocalClassName());
        active++;
    }

    @Override
    public void onActivityPaused(Activity activity) {
        Log.i("Tracking Activity Paused", activity.getLocalClassName());
        active--;
    }

    @Override
    public void onActivityDestroyed(Activity activity) {
        Log.i("Tracking Activity Destroyed", activity.getLocalClassName());
        active--;

        // if active var here ever becomes zero, the app is closed or in background
        if(active == 0){
            ...
        }

    }

    @Override
    public void onActivityCreated(Activity activity, Bundle savedInstanceState) {
        Log.i("Tracking Activity Created", activity.getLocalClassName());
        active++;
    }
}

• Create the ImageView
• Use an OnClickListener in the button
• Add the ImageView to the layout or set the visibility of the ImageView to VISIBLE

var currentDateTime = dateTime.Now();
var date=currentDateTime.Date;

Sometimes above all answer not woking, when you can use below trick

.form-group {_x000D_
  position: relative;_x000D_
}_x000D_
_x000D_
input {_x000D_
  padding-left: 1rem;_x000D_
}_x000D_
_x000D_
i {_x000D_
  position: absolute;_x000D_
  left: 0;_x000D_
  top: 50%;_x000D_
  transform: translateY(-50%);_x000D_
}

<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.6.3/css/all.css">_x000D_
_x000D_
<form role="form">_x000D_
  <div class="form-group">_x000D_
    <input type="text" class="form-control empty" id="iconified" placeholder="search">_x000D_
    <i class="fas fa-search"></i>_x000D_
  </div>_x000D_
</form>

Go to the folder in which eclipse is installed then open readme folder followed by the readme txt file. Here you will find all the info you need.

The general format, from the @link section of the javadoc documentation, is:

Examples

Method in the same class:

/** See also {@link #myMethod(String)}. */
void foo() { ... }

Method in a different class, either in the same package or imported:

/** See also {@link MyOtherClass#myMethod(String)}. */
void foo() { ... }

Method in a different package and not imported:

/** See also {@link com.mypackage.YetAnotherClass#myMethod(String)}. */
void foo() { ... }

Label linked to method, in plain text rather than code font:

/** See also this {@linkplain #myMethod(String) implementation}. */
void foo() { ... }

A chain of method calls, as in your question. We have to specify labels for the links to methods outside this class, or we get getFoo().Foo.getBar().Bar.getBaz(). But these labels can be fragile during refactoring -- see "Labels" below.

/**
 * A convenience method, equivalent to 
 * {@link #getFoo()}.{@link Foo#getBar() getBar()}.{@link Bar#getBaz() getBaz()}.
 * @return baz
 */
public Baz fooBarBaz()

Labels

Automated refactoring may not affect labels. This includes renaming the method, class or package; and changing the method signature.

Therefore, provide a label only if you want different text than the default.

For example, you might link from human language to code:

/** You can also {@linkplain #getFoo() get the current foo}. */
void setFoo( Foo foo ) { ... }

Or you might link from a code sample with text different than the default, as shown above under "A chain of method calls." However, this can be fragile while APIs are evolving.

Type erasure and #member

If the method signature includes parameterized types, use the erasure of those types in the javadoc @link. For example:

int bar( Collection<Integer> receiver ) { ... }

/** See also {@link #bar(Collection)}. */
void foo() { ... }

Try this:

Dim text As String = ""
Dim files() As String = IO.Directory.GetFiles(sFolder)

For Each sFile As String In files
    text &= IO.File.ReadAllText(sFile)
Next

You could use Convert.ChangeType():

public static T ConfigSetting<T>(string settingName)
{
    return (T)Convert.ChangeType(ConfigurationManager.AppSettings[settingName], typeof(T));
}

I'm also stuck on this problem, then I realized that if I want to calculate the dynamic height of the webView, I need to tell the width of the webView first, so I add one line before js and it turns out I can get very accurate actual height.

The code is simple like this:

-(void)webViewDidFinishLoad:(UIWebView *)webView
{

    //tell the width first
    webView.width = [UIScreen mainScreen].bounds.size.width;

    //use js to get height dynamically
    CGFloat scrollSizeHeight = [[webView stringByEvaluatingJavaScriptFromString:@"document.body.scrollHeight"] floatValue];
    webView.height = scrollSizeHeight;

    webView.x = 0;
    webView.y = 0;

    //......
}

Here is where the repair button is:

empty is an operator:

The empty operator is a prefix operation that can be used to determine whether a value is null or empty.

<c:if test="${empty myObject.featuresList}">

Microsoft recommends using singular for Enums unless the Enum represents bit fields (use the FlagsAttribute as well). See Enumeration Type Naming Conventions (a subset of Microsoft's Naming Guidelines).

To respond to your clarification, I see nothing wrong with either of the following:

public enum OrderStatus { Pending, Fulfilled, Error };

public class SomeClass { 
    public OrderStatus OrderStatus { get; set; }
}

or

public enum OrderStatus { Pending, Fulfilled, Error };

public class SomeClass {
    public OrderStatus Status { get; set; }
}

Bottom Line

Use either COUNT(field) or COUNT(*), and stick with it consistently, and if your database allows COUNT(tableHere) or COUNT(tableHere.*), use that.

In short, don't use COUNT(1) for anything. It's a one-trick pony, which rarely does what you want, and in those rare cases is equivalent to count(*)

Use count(*) for counting

Use * for all your queries that need to count everything, even for joins, use *

SELECT boss.boss_id, COUNT(subordinate.*)
FROM boss
LEFT JOIN subordinate on subordinate.boss_id = boss.boss_id
GROUP BY boss.id

But don't use COUNT(*) for LEFT joins, as that will return 1 even if the subordinate table doesn't match anything from parent table

SELECT boss.boss_id, COUNT(*)
FROM boss
LEFT JOIN subordinate on subordinate.boss_id = boss.boss_id
GROUP BY boss.id

Don't be fooled by those advising that when using * in COUNT, it fetches entire row from your table, saying that * is slow. The * on SELECT COUNT(*) and SELECT * has no bearing to each other, they are entirely different thing, they just share a common token, i.e. *.

An alternate syntax

In fact, if it is not permitted to name a field as same as its table name, RDBMS language designer could give COUNT(tableNameHere) the same semantics as COUNT(*). Example:

For counting rows we could have this:

SELECT COUNT(emp) FROM emp

And they could make it simpler:

SELECT COUNT() FROM emp

And for LEFT JOINs, we could have this:

SELECT boss.boss_id, COUNT(subordinate)
FROM boss
LEFT JOIN subordinate on subordinate.boss_id = boss.boss_id
GROUP BY boss.id

But they cannot do that (COUNT(tableNameHere)) since SQL standard permits naming a field with the same name as its table name:

CREATE TABLE fruit -- ORM-friendly name
(
fruit_id int NOT NULL,
fruit varchar(50), /* same name as table name, 
                and let's say, someone forgot to put NOT NULL */
shape varchar(50) NOT NULL,
color varchar(50) NOT NULL
)

Counting with null

And also, it is not a good practice to make a field nullable if its name matches the table name. Say you have values 'Banana', 'Apple', NULL, 'Pears' on fruit field. This will not count all rows, it will only yield 3, not 4

SELECT count(fruit) FROM fruit

Though some RDBMS do that sort of principle (for counting the table's rows, it accepts table name as COUNT's parameter), this will work in Postgresql (if there is no subordinate field in any of the two tables below, i.e. as long as there is no name conflict between field name and table name):

SELECT boss.boss_id, COUNT(subordinate)
FROM boss
LEFT JOIN subordinate on subordinate.boss_id = boss.boss_id
GROUP BY boss.id

But that could cause confusion later if we will add a subordinate field in the table, as it will count the field(which could be nullable), not the table rows.

So to be on the safe side, use:

SELECT boss.boss_id, COUNT(subordinate.*)
FROM boss
LEFT JOIN subordinate on subordinate.boss_id = boss.boss_id
GROUP BY boss.id

count(1): The one-trick pony

In particular to COUNT(1), it is a one-trick pony, it works well only on one table query:

SELECT COUNT(1) FROM tbl

But when you use joins, that trick won't work on multi-table queries without its semantics being confused, and in particular you cannot write:

-- count the subordinates that belongs to boss
SELECT boss.boss_id, COUNT(subordinate.1)
FROM boss
LEFT JOIN subordinate on subordinate.boss_id = boss.boss_id
GROUP BY boss.id

So what's the meaning of COUNT(1) here?

SELECT boss.boss_id, COUNT(1)
FROM boss
LEFT JOIN subordinate on subordinate.boss_id = boss.boss_id
GROUP BY boss.id

Is it this...?

-- counting all the subordinates only
SELECT boss.boss_id, COUNT(subordinate.boss_id)
FROM boss
LEFT JOIN subordinate on subordinate.boss_id = boss.boss_id
GROUP BY boss.id

Or this...?

-- or is that COUNT(1) will also count 1 for boss regardless if boss has a subordinate
SELECT boss.boss_id, COUNT(*)
FROM boss
LEFT JOIN subordinate on subordinate.boss_id = boss.boss_id
GROUP BY boss.id

By careful thought, you can infer that COUNT(1) is the same as COUNT(*), regardless of type of join. But for LEFT JOINs result, we cannot mold COUNT(1) to work as: COUNT(subordinate.boss_id), COUNT(subordinate.*)

So just use either of the following:

-- count the subordinates that belongs to boss
SELECT boss.boss_id, COUNT(subordinate.boss_id)
FROM boss
LEFT JOIN subordinate on subordinate.boss_id = boss.boss_id
GROUP BY boss.id

Works on Postgresql, it's clear that you want to count the cardinality of the set

-- count the subordinates that belongs to boss
SELECT boss.boss_id, COUNT(subordinate.*)
FROM boss
LEFT JOIN subordinate on subordinate.boss_id = boss.boss_id
GROUP BY boss.id

Another way to count the cardinality of the set, very English-like (just don't make a column with a name same as its table name) : http://www.sqlfiddle.com/#!1/98515/7

select boss.boss_name, count(subordinate)
from boss
left join subordinate on subordinate.boss_code = boss.boss_code
group by boss.boss_name

You cannot do this: http://www.sqlfiddle.com/#!1/98515/8

select boss.boss_name, count(subordinate.1)
from boss
left join subordinate on subordinate.boss_code = boss.boss_code
group by boss.boss_name

You can do this, but this produces wrong result: http://www.sqlfiddle.com/#!1/98515/9

select boss.boss_name, count(1)
from boss
left join subordinate on subordinate.boss_code = boss.boss_code
group by boss.boss_name

RFC 2616 describes which status codes to use.

And no, it's not always 200.

You need a Flask view that will receive POST data and an HTML form that will send it.

from flask import request

@app.route('/addRegion', methods=['POST'])
def addRegion():
    ...
    return (request.form['projectFilePath'])

<form action="{{ url_for('addRegion') }}" method="post">
    Project file path: <input type="text" name="projectFilePath"><br>
    <input type="submit" value="Submit">
</form>

I am using

Request.Url.GetLeftPart(UriPartial.Authority) +
        VirtualPathUtility.ToAbsolute("~/")

In my case I chose the Force Update checkbox while pushing. It worked like a charm.

Here is a method I use to get the last xx of a string:

public static String takeLast(String value, int count) {
    if (value == null || value.trim().length() == 0 || count < 1) {
        return "";
    }

    if (value.length() > count) {
        return value.substring(value.length() - count);
    } else {
        return value;
    }
}

Then use it like so:

String testStr = "this is a test string";
String last1 = takeLast(testStr, 1); //Output: g
String last4 = takeLast(testStr, 4); //Output: ring

Ctrl+A, Ctrl+K to wipe the current line in the terminal. You can then recall it with Ctrl+Y if you need.

I have gone through many links but this answer helped me alot:

$scope.redirectPage = function (data) { $window.open(data, "popup", "width=1000,height=700,left=300,top=200"); };

** data will be absolute url which you are hitting.

or:

usleep(NUMBER_OF_MICRO_SECONDS);

Download Handle.

https://technet.microsoft.com/en-us/sysinternals/bb896655.aspx

If you want to find what program has a handle on a certain file, run this from the directory that Handle.exe is extracted to. Unless you've added Handle.exe to the PATH environment variable. And the file path is C:\path\path\file.txt", run this:

handle "C:\path\path\file.txt"

This will tell you what process(es) have the file (or folder) locked.

I got this error because I was using require('https') where I should have been using require('http').

You can set specific cache-headers for a whole folder in either your root web.config:

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
  <!-- Note the use of the 'location' tag to specify which 
       folder this applies to-->
  <location path="images">
    <system.webServer>
      <staticContent>
        <clientCache cacheControlMode="UseMaxAge" cacheControlMaxAge="00:00:15" />
      </staticContent>
    </system.webServer>
  </location>
</configuration>

Or you can specify these in a web.config file in the content folder:

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
  <system.webServer>
    <staticContent>
      <clientCache cacheControlMode="UseMaxAge" cacheControlMaxAge="00:00:15" />
    </staticContent>
  </system.webServer>
</configuration>

I'm not aware of a built in mechanism to target specific file types.

Craig Larman's Applying UML and Patterns. While the Gang of Four book Design Patterns is very instructive, I found that I didn't "get" how to use design patterns until I ran across Larman's book in a programming class.

db.messages.find( { headers : { From: "[email protected]" } } )

This queries for documents where headers equals { From: ... }, i.e. contains no other fields.

db.messages.find( { 'headers.From': "[email protected]" } )

This only looks at the headers.From field, not affected by other fields contained in, or missing from, headers.

Dot-notation docs

For anyone else who gets caught, ensure setCustomAnimations is called before the call to replace/add when building the transaction.

Partial solution: for a single string column tmp = df['A1'].fillna(''); isEmpty = tmp=='' gives boolean Series of True where there are empty strings or NaN values.

If you want to access the data in instance B from the instance A. Then this is the query, you can edit your respective credential.

CREATE DATABASE LINK dblink_passport
CONNECT TO xxusernamexx IDENTIFIED BY xxpasswordxx
USING
'(DESCRIPTION=
(ADDRESS=
(PROTOCOL=TCP)
(HOST=xxipaddrxx / xxhostxx )
(PORT=xxportxx))
(CONNECT_DATA=
(SID=xxsidxx)))';

After executing this query access table

SELECT * FROM tablename@dblink_passport;

You can perform any operation DML, DDL, DQL

I had a directory of files that I wanted to check. I created an Excel macro to determine ANSI vs. UTF-8. This worked for me.

        Sub GetTextFileEncoding()
        Dim sFile As String
        Dim sPath As String
        Dim sTextLine As String
        Dim iRow As Integer

        'Set Defaults and Initial Values
        iRow = 1
        sPath = "C:textfiles\"
        sFile = Dir(sPath & "*.txt")

        Do While Len(sFile) > 0
            'Get FileType
            'Debug.Print sFile & " - " & FileEncodeType(sPath & sFile)

            'Show on Excel Worksheet
            Cells(iRow, 1).Value = sFile
            Cells(iRow, 2).Value = FileEncodeType(sPath & sFile)

            'Get next file
            sFile = Dir

            'Increment Row
            iRow = iRow + 1
        Loop
    End Sub

    Function FileEncodeType(sFile As String) As String
        Dim bEF As Boolean
        Dim bBB As Boolean
        Dim bBF As Boolean

        bEF = False
        bBB = False
        bBF = False

        Open sFile For Input As #1
            If Not EOF(1) Then
                'Read first line
                Line Input #1, textline
                'Debug.Print textline
                For i = 1 To 3
                    'Debug.Print Asc(Mid(textline, i, 1)) & " - " & Mid(textline, i, 1)
                    Select Case i
                        Case 1
                            If Asc(Mid(textline, i, 1)) = 239 Then
                                bEF = True
                            End If
                        Case 2
                             If Asc(Mid(textline, i, 1)) = 187 Then
                                bBB = True
                            End If
                        Case 3
                             If Asc(Mid(textline, i, 1)) = 191 Then
                                bBF = True
                            End If
                        Case 4

                    End Select
                Next
            End If
        Close #1

        If bEF And bBB And bBF Then
            FileEncodeType = "UTF-8"
        Else
            FileEncodeType = "ANSI"
        End If
    End Function

BigDecimal b = new BigDecimal(c).setScale(2,BigDecimal.ROUND_HALF_UP);

@NotNull is a JSR 303 Bean Validation annotation. It has nothing to do with database constraints itself. As Hibernate is the reference implementation of JSR 303, however, it intelligently picks up on these constraints and translates them into database constraints for you, so you get two for the price of one. @Column(nullable = false) is the JPA way of declaring a column to be not-null. I.e. the former is intended for validation and the latter for indicating database schema details. You're just getting some extra (and welcome!) help from Hibernate on the validation annotations.

Sometimes Google Chrome throws this error, even if it should not. I experienced it when Chrome had a new version, and it needed to be restarted. After restarting the same page worked without any errors. The error in the console was:

net::ERR_INSECURE_RESPONSE

Using Guava

List<Object> lst ...    
List<String> ls = Lists.transform(lst, Functions.toStringFunction());

I'm very late to answer it. But, I would like to share one example, which I only thought of today. If I told you to cut a piece of paper with dimensions 5m by 5m, then surely you would do that. But suppose I ask you to cut 1000 pieces of paper of the same dimensions. In this case, you won't do the measuring 1000 times; obviously, you would make a frame of 5m by 5m, and then with the help of it you would be able to cut 1000 pieces of paper in less time. So, what you did was make a framework which would do a specific type of task. Instead of performing the same type of task again and again for the same type of applications, you create a framework having all those facilities together in one nice packet, hence providing the abstraction for your application and more importantly many applications.

I think Todd is correct, but I think there's one other thing you should consider. You can reliably get the home directory from the JVM at runtime, and then you can create files objects relative to that location. It's not that much more trouble, and it's something you'll appreciate if you ever move to another computer or operating system.

File homedir = new File(System.getProperty("user.home"));
File fileToRead = new File(homedir, "java/ex.txt");

As was mentioned before, you could do something like that

public String getVal(WebElement webElement) {
    JavascriptExecutor e = (JavascriptExecutor) driver;
    return (String) e.executeScript(String.format("return $('#%s').val();", webElement.getAttribute("id")));
}

But as you can see, your element must have an id attribute, and also, jquery on your page.

There WHERE part could be written like this:

WHERE 
 (LEN('TestPerson') <> 0 OR co.personentered  = co.personentered) AND
 (LEN('TestPerson') = 0 OR co.personentered LIKE '%TestPerson') AND
 (cc.ccnum = CASE LEN('TestFFNum')
                WHEN 0 THEN cc.ccnum 
                ELSE 'TestFFNum' 
              END ) AND
 (LEN('2011-01-09 11:56:29.327') <> 0 OR co.DTEntered = co.DTEntered ) AND
 ((LEN('2011-01-09 11:56:29.327') = 0 AND LEN('2012-01-09 11:56:29.327') <> 0) OR co.DTEntered >= '2011-01-09 11:56:29.327'  ) AND
 ((LEN('2011-01-09 11:56:29.327') = 0 AND LEN('2012-01-09 11:56:29.327') = 0) OR co.DTEntered BETWEEN '2011-01-09 11:56:29.327' AND '2012-01-09 11:56:29.327'  ) AND 
 tl.storenum < 699 

An important point that often bites new Python programmers but the other posters haven't made explicit is that strings in Python are immutable -- you can't ever modify them in place.

You need to retrain yourself when working with strings in Python so that instead of thinking, "How can I modify this string?" instead you're thinking "how can I create a new string that has some pieces from this one I've already gotten?"

The CASE is just a "switch" to return a value - not to execute a whole code block.

You need to change your code to something like this:

SELECT 
   @selectoneCount = CASE @Temp
                         WHEN 1 THEN @selectoneCount + 1
                         WHEN 2 THEN @selectoneCount + 1
                     END

If @temp is set to none of those values (1 or 2), then you'll get back a NULL

i come across this problem cause my debug.keystore is expired, so i deleted the debug.keystore under .android folder, and the eclipse will regenerate a new debug.keystore, then i fixed th

Since eval("3+2")=5 ,you can use it as following :

byId=(id)=>document.getElementById(id); 
byId('txt3').value=eval(`${byId('txt1').value}+${byId('txt2').value}`)

By that, you don't need parseInt

As of October 2016, Google has added a file upload question type in native Google Forms, no Google Apps Script needed. See documentation.

WKWebView using Swift in iOS 8..

The whole ViewController.swift file now looks like this:

import UIKit
import WebKit

class ViewController: UIViewController {

    @IBOutlet var containerView : UIView! = nil
    var webView: WKWebView?

    override func loadView() {
        super.loadView()

        self.webView = WKWebView()
        self.view = self.webView!
    }

    override func viewDidLoad() {
        super.viewDidLoad()

        var url = NSURL(string:"http://www.kinderas.com/")
        var req = NSURLRequest(URL:url)
        self.webView!.loadRequest(req)
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }

}

I guess anther way, possibly faster, to achieve this is 1) Use dict comprehension to get desired dict (i.e., taking 2nd col of each array) 2) Then use pd.DataFrame to create an instance directly from the dict without loop over each col and concat.

Assuming your mat looks like this (you can ignore this since your mat is loaded from file):

In [135]: mat = {'a': np.random.randint(5, size=(4,2)),
   .....: 'b': np.random.randint(5, size=(4,2))}

In [136]: mat
Out[136]: 
{'a': array([[2, 0],
        [3, 4],
        [0, 1],
        [4, 2]]), 'b': array([[1, 0],
        [1, 1],
        [1, 0],
        [2, 1]])}

Then you can do:

In [137]: df = pd.DataFrame ({name:mat[name][:,1] for name in mat})

In [138]: df
Out[138]: 
   a  b
0  0  0
1  4  1
2  1  0
3  2  1

[4 rows x 2 columns]

According to this page https://developer.apple.com/library/archive/documentation/AppleApplications/Reference/SafariHTMLRef/Articles/Attributes.html it is only available if (Enabled only in a UIWebView with the allowsInlineMediaPlayback property set to YES.) I understand in Mobile Safari this is YES on iPad and NO on iPhone and iPod Touch.

BS4 is now available on .NET Core 2.2. On the SDK 2.2.105 x64 installer for sure. I'm running Visual Studio 2017 with it. So far so good for new web application projects.

Building on Graham's answer, the extra code saves the workbook back into it's original location in it's original format.

Public Sub SaveWorksheetsAsCsv()

Dim WS As Excel.Worksheet
Dim SaveToDirectory As String

Dim CurrentWorkbook As String
Dim CurrentFormat As Long

 CurrentWorkbook = ThisWorkbook.FullName
 CurrentFormat = ThisWorkbook.FileFormat
' Store current details for the workbook

      SaveToDirectory = "C:\"

      For Each WS In ThisWorkbook.Worksheets
          WS.SaveAs SaveToDirectory & WS.Name, xlCSV
      Next

 Application.DisplayAlerts = False
  ThisWorkbook.SaveAs Filename:=CurrentWorkbook, FileFormat:=CurrentFormat
 Application.DisplayAlerts = True
' Temporarily turn alerts off to prevent the user being prompted
'  about overwriting the original file.

End Sub

No, this is not supported in MySQL stored routine syntax.

Feel free to submit a feature request at bugs.mysql.com.

Two options:

• Return default(T) which means you'll return null if T is a reference type (or a nullable value type), 0 for int, '\0' for char, etc. (Default values table (C# Reference))
• Restrict T to be a reference type with the where T : class constraint and then return null as normal

Use Reflection to do this

SomeClass A = SomeClass(...)
PropertyInfo[] properties = A.GetType().GetProperties();

I know this is an older question post, but my daughter came to me with the question, and referenced this page as having possible answers. Given that she's hunting an answer for this, it's a safe assumption others might still be as well.

All are great approaches, and as with everything there's about as many way to skin a cat as there are cats to skin.

If you're looking for a left trim and a right trim of a character or string, and your trailing character/string is uniform in length, here's my suggestion:

SELECT SUBSTRING(ColName,VAR, LEN(ColName)-VAR)

Or in this question...

SELECT SUBSTRING('"this is a test message"',2, LEN('"this is a test message"')-2)

With this, you simply adjust the SUBSTRING starting point (2), and LEN position (-2) to whatever value you need to remove from your string.

It's non-iterative and doesn't require explicit case testing and above all it's inline all of which make for a cleaner execution plan.

Angular has a built-in filter for showing JSON

<pre>{{data | json}}</pre>

Note the use of the pre-tag to conserve whitespace and linebreaks

Demo:

angular.module('app', [])_x000D_
  .controller('Ctrl', ['$scope',_x000D_
    function($scope) {_x000D_
_x000D_
      $scope.data = {_x000D_
        a: 1,_x000D_
        b: 2,_x000D_
        c: {_x000D_
          d: "3"_x000D_
        },_x000D_
      };_x000D_
_x000D_
    }_x000D_
  ]);

<!DOCTYPE html>_x000D_
<html ng-app="app">_x000D_
_x000D_
  <head>_x000D_
    <script data-require="[email protected]" data-semver="1.2.15" src="//code.angularjs.org/1.2.15/angular.js"></script>_x000D_
  </head>_x000D_
_x000D_
  <body ng-controller="Ctrl">_x000D_
    <pre>{{data | json}}</pre>_x000D_
  </body>_x000D_
_x000D_
</html>

There's also an angular.toJson method, but I haven't played around with that (Docs)

Through values in dictionary can be object of any kind they can't be hashed or indexed other way. So finding key by the value is unnatural for this collection type. Any query like that can be executed in O(n) time only. So if this is frequent task you should take a look for some indexing of key like Jon sujjested or maybe even some spatial index (DB or http://pypi.python.org/pypi/Rtree/ ).

Maybe I am answering very late. But I was also having a problem configuring host network in docker compose. Then I read the documentation thoroughly and made the changes and it worked. Please note this configuration is for docker-compose version "3.7". Here einwohner_net and elk_net_net are my user-defined networks required for my application. I am using host net to get some system metrics.

Link To Documentation https://docs.docker.com/compose/compose-file/#host-or-none

version: '3.7'
services:
  app:
    image: ramansharma/einwohnertomcat:v0.0.1
    deploy:
      replicas: 1
      ports:
       - '8080:8080'
    volumes:
     - type: bind
       source: /proc
       target: /hostfs/proc
       read_only: true
     - type: bind
       source: /sys/fs/cgroup
       target: /hostfs/sys/fs/cgroup
       read_only: true
     - type: bind
       source: /
       target: /hostfs
       read_only: true
    networks:
     hostnet: {}
    networks:
     - einwohner_net
     - elk_elk_net
networks:
 einwohner_net:
 elk_elk_net:
   external: true
 hostnet:
   external: true
   name: host

• Click on the orange button ("choose files")
• Browse to the Swagger doc (swagger.yaml)
• After selecting the file, a new collection gets created in POSTMAN. It will contain folders based on your endpoints.

You can also get some sample swagger files online to verify this(if you have errors in your swagger doc).

As you can see, there are several ways to achieve this.

I personally use:

Expand all: CTRL + M + L

Collapse all: CTRL + M + O

Bonus:

Expand/Collapse on cursor location: CTRL + M + M

SQL Server requires subqueries that you SELECT FROM or JOIN to have an alias.

Add an alias to your subquery (in this case x):

select COUNT(*) from
(
select m.Company_id
from Monitor as m
    inner join Monitor_Request as mr on mr.Company_ID=m.Company_id
    group by m.Company_id
    having COUNT(m.Monitor_id)>=5)  x

Solution working with different types and with upper and lower cases.
For example, without the toLowerCase statement, "Goodyear" will come before "doe" with an ascending sort. Run the code snippet at the bottom of my answer to view the different behaviors.

JSON DATA:

var people = [
{
    "f_name" : "john",
    "l_name" : "doe", // lower case
    "sequence": 0 // int
},
{
    "f_name" : "michael",
    "l_name" : "Goodyear", // upper case
    "sequence" : 1 // int
}];

JSON Sort Function:

function sortJson(element, prop, propType, asc) {
  switch (propType) {
    case "int":
      element = element.sort(function (a, b) {
        if (asc) {
          return (parseInt(a[prop]) > parseInt(b[prop])) ? 1 : ((parseInt(a[prop]) < parseInt(b[prop])) ? -1 : 0);
        } else {
          return (parseInt(b[prop]) > parseInt(a[prop])) ? 1 : ((parseInt(b[prop]) < parseInt(a[prop])) ? -1 : 0);
        }
      });
      break;
    default:
      element = element.sort(function (a, b) {
        if (asc) {
          return (a[prop].toLowerCase() > b[prop].toLowerCase()) ? 1 : ((a[prop].toLowerCase() < b[prop].toLowerCase()) ? -1 : 0);
        } else {
          return (b[prop].toLowerCase() > a[prop].toLowerCase()) ? 1 : ((b[prop].toLowerCase() < a[prop].toLowerCase()) ? -1 : 0);
        }
      });
  }
}

Usage:

sortJson(people , "l_name", "string", true);
sortJson(people , "sequence", "int", true);

var people = [{_x000D_
  "f_name": "john",_x000D_
  "l_name": "doe",_x000D_
  "sequence": 0_x000D_
}, {_x000D_
  "f_name": "michael",_x000D_
  "l_name": "Goodyear",_x000D_
  "sequence": 1_x000D_
}, {_x000D_
  "f_name": "bill",_x000D_
  "l_name": "Johnson",_x000D_
  "sequence": 4_x000D_
}, {_x000D_
  "f_name": "will",_x000D_
  "l_name": "malone",_x000D_
  "sequence": 2_x000D_
}, {_x000D_
  "f_name": "tim",_x000D_
  "l_name": "Allen",_x000D_
  "sequence": 3_x000D_
}];_x000D_
_x000D_
function sortJsonLcase(element, prop, asc) {_x000D_
  element = element.sort(function(a, b) {_x000D_
    if (asc) {_x000D_
      return (a[prop] > b[prop]) ? 1 : ((a[prop] < b[prop]) ? -1 : 0);_x000D_
    } else {_x000D_
      return (b[prop] > a[prop]) ? 1 : ((b[prop] < a[prop]) ? -1 : 0);_x000D_
    }_x000D_
  });_x000D_
}_x000D_
_x000D_
function sortJson(element, prop, propType, asc) {_x000D_
  switch (propType) {_x000D_
    case "int":_x000D_
      element = element.sort(function(a, b) {_x000D_
        if (asc) {_x000D_
          return (parseInt(a[prop]) > parseInt(b[prop])) ? 1 : ((parseInt(a[prop]) < parseInt(b[prop])) ? -1 : 0);_x000D_
        } else {_x000D_
          return (parseInt(b[prop]) > parseInt(a[prop])) ? 1 : ((parseInt(b[prop]) < parseInt(a[prop])) ? -1 : 0);_x000D_
        }_x000D_
      });_x000D_
      break;_x000D_
    default:_x000D_
      element = element.sort(function(a, b) {_x000D_
        if (asc) {_x000D_
          return (a[prop].toLowerCase() > b[prop].toLowerCase()) ? 1 : ((a[prop].toLowerCase() < b[prop].toLowerCase()) ? -1 : 0);_x000D_
        } else {_x000D_
          return (b[prop].toLowerCase() > a[prop].toLowerCase()) ? 1 : ((b[prop].toLowerCase() < a[prop].toLowerCase()) ? -1 : 0);_x000D_
        }_x000D_
      });_x000D_
  }_x000D_
}_x000D_
_x000D_
function sortJsonString() {_x000D_
  sortJson(people, 'l_name', 'string', $("#chkAscString").prop("checked"));_x000D_
  display();_x000D_
}_x000D_
_x000D_
function sortJsonInt() {_x000D_
  sortJson(people, 'sequence', 'int', $("#chkAscInt").prop("checked"));_x000D_
  display();_x000D_
}_x000D_
_x000D_
function sortJsonUL() {_x000D_
  sortJsonLcase(people, 'l_name', $('#chkAsc').prop('checked'));_x000D_
  display();_x000D_
}_x000D_
_x000D_
function display() {_x000D_
  $("#data").empty();_x000D_
  $(people).each(function() {_x000D_
    $("#data").append("<div class='people'>" + this.l_name + "</div><div class='people'>" + this.f_name + "</div><div class='people'>" + this.sequence + "</div><br />");_x000D_
  });_x000D_
}

body {_x000D_
  font-family: Arial;_x000D_
}_x000D_
.people {_x000D_
  display: inline-block;_x000D_
  width: 100px;_x000D_
  border: 1px dotted black;_x000D_
  padding: 5px;_x000D_
  margin: 5px;_x000D_
}_x000D_
.buttons {_x000D_
  border: 1px solid black;_x000D_
  padding: 5px;_x000D_
  margin: 5px;_x000D_
  float: left;_x000D_
  width: 20%;_x000D_
}_x000D_
ul {_x000D_
  margin: 5px 0px;_x000D_
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
<div class="buttons" style="background-color: rgba(240, 255, 189, 1);">_x000D_
  Sort the JSON array <strong style="color: red;">with</strong> toLowerCase:_x000D_
  <ul>_x000D_
    <li>Type: string</li>_x000D_
    <li>Property: lastname</li>_x000D_
  </ul>_x000D_
  <button onclick="sortJsonString(); return false;">Sort JSON</button>_x000D_
  Asc Sort_x000D_
  <input id="chkAscString" type="checkbox" checked="checked" />_x000D_
</div>_x000D_
<div class="buttons" style="background-color: rgba(255, 214, 215, 1);">_x000D_
  Sort the JSON array <strong style="color: red;">without</strong> toLowerCase:_x000D_
  <ul>_x000D_
    <li>Type: string</li>_x000D_
    <li>Property: lastname</li>_x000D_
  </ul>_x000D_
  <button onclick="sortJsonUL(); return false;">Sort JSON</button>_x000D_
  Asc Sort_x000D_
  <input id="chkAsc" type="checkbox" checked="checked" />_x000D_
</div>_x000D_
<div class="buttons" style="background-color: rgba(240, 255, 189, 1);">_x000D_
  Sort the JSON array:_x000D_
  <ul>_x000D_
    <li>Type: int</li>_x000D_
    <li>Property: sequence</li>_x000D_
  </ul>_x000D_
  <button onclick="sortJsonInt(); return false;">Sort JSON</button>_x000D_
  Asc Sort_x000D_
  <input id="chkAscInt" type="checkbox" checked="checked" />_x000D_
</div>_x000D_
<br />_x000D_
<br />_x000D_
<div id="data" style="float: left; border: 1px solid black; width: 60%; margin: 5px;">Data</div>

Assign primary key in hibernate

Make sure that the attribute is primary key and Auto Incrementable in the database. Then map it into the data class with the annotation with @GeneratedValue annotation using IDENTITY.

@Entity
@Table(name = "client")
data class Client(
        @Id @GeneratedValue(strategy = GenerationType.IDENTITY) @Column(name = "id") private val id: Int? = null
)

GL

Source

for k, m in self.materials.items():

example:

miles_dict = {'Monday':1, 'Tuesday':2.3, 'Wednesday':3.5, 'Thursday':0.9}
for k, v in miles_dict.items():
    print("%s: %s" % (k, v))