Ports 57311 and 57312 are randomly assigned ports used for RMI communication. These ports change each time Cassandra starts up, but need to be open in the firewall, along with 8080/7199 (depending on version), to allow for remote JMX access. Something that doesn't appear to be particularly well documented, but has tripped me up in the past.

I recently migrated my MongoDB to DynamoDB, and wrote 3 blogs to share some experience and data about performance, cost.

Migrate from MongoDB to AWS DynamoDB + SimpleDB

7 Reasons You Should Use MongoDB over DynamoDB

3 Reasons You Should Use DynamoDB over MongoDB

One liner is the best :

db.mycollection.find({ 'fieldname' : { $exists: true, $ne: null } });

Here,

mycollection : place your desired collection name

fieldname : place your desired field name

Explaination :

$exists : When is true, $exists matches the documents that contain the field, including documents where the field value is null. If is false, the query returns only the documents that do not contain the field.

$ne selects the documents where the value of the field is not equal to the specified value. This includes documents that do not contain the field.

So in your provided case following query going to return all the documents with imageurl field exists and having not null value:

db.mycollection.find({ 'imageurl' : { $exists: true, $ne: null } });

It will do the trick..

Match (n)-[r]-()
Delete n,r;

Be aware of an issue with sparse unique indexes in MongoDB. I've hit it and it is extremely cumbersome to workaround.

The problem is this - you have a field, which is unique if present and you wish to find all the objects where the field is absent. The way sparse unique indexes are implemented in Mongo is that objects where that field is missing are not in the index at all - they cannot be retrieved by a query on that field - {$exists: false} just does not work.

The only workaround I have come up with is having a special null family of values, where an empty value is translated to a special prefix (like null:) concatenated to a uuid. This is a real headache, because one has to take care of transforming to/from the empty values when writing/quering/reading. A major nuisance.

I have never used server side javascript execution in MongoDB (it is not advised anyway) and their map/reduce has awful performance when there is just one Mongo node. Because of all these reasons I am now considering to check out CouchDB, maybe it fits more to my particular scenario.

BTW, if anyone knows the link to the respective Mongo issue describing the sparse unique index problem - please share.

The answer of this question depends on the number of items and their size and your budget. Depends on that we have following 3 cases:

1- The number of items and size of items in the table are not very much. then as Steffen Opel said you can Use Query rather than Scan to retrieve all items for user_id and then loop over all returned items and either facilitate DeleteItem or BatchWriteItem. But keep in mind you may burn a lot of throughput capacity here. For example, consider a situation where you need delete 1000 items from a DynamoDB table. Assume that each item is 1 KB in size, resulting in Around 1MB of data. This bulk-deleting task will require a total of 2000 write capacity units for query and delete. To perform this data load within 10 seconds (which is not even considered as fast in some applications), you would need to set the provisioned write throughput of the table to 200 write capacity units. As you can see its doable to use this way if its for less number of items or small size items.

2- We have a lot of items or very large items in the table and we can store them according to the time into different tables. Then as jonathan Said you can just delete the table. this is much better but I don't think it is matched with your case. As you want to delete all of users data no matter what is the time of creation of logs, so in this case you can't delete a particular table. if you wanna have a separate table for each user then I guess if number of users are high then its so expensive and it is not practical for your case.

3- If you have a lot of data and you can't divide your hot and cold data into different tables and you need to do large scale delete frequently then unfortunately DynamoDB is not a good option for you at all. It may become more expensive or very slow(depends on your budget). In these cases I recommend to find another database for your data.

From The Little MongoDB Book

Yet another alternative to using joins is to denormalize your data. Historically, denormalization was reserved for performance-sensitive code, or when data should be snapshotted (like in an audit log). However, with the ever- growing popularity of NoSQL, many of which don’t have joins, denormalization as part of normal modeling is becoming increasingly common. This doesn’t mean you should duplicate every piece of information in every document. However, rather than letting fear of duplicate data drive your design decisions, consider modeling your data based on what information belongs to what document.

So,

student
{ 
    _id: ObjectId(...),
    name: 'Jane',
    courses: [
    { 
        name: 'Biology 101', 
        mark: 85, 
        id:bio101 
    },
  ]
}

If its a RESTful API data, replace the course id with a GET link to the course resource

just create a folder

C:\data\db 

Run below commands in command prompt

C:\Program Files\MongoDB\Server\3.4\bin>mongod

Open another command prompt

C:\Program Files\MongoDB\Server\3.4\bin>mongo

"Hash and Range Primary Key" means that a single row in DynamoDB has a unique primary key made up of both the hash and the range key. For example with a hash key of X and range key of Y, your primary key is effectively XY. You can also have multiple range keys for the same hash key but the combination must be unique, like XZ and XA. Let's use their examples for each type of table:

Hash Primary Key – The primary key is made of one attribute, a hash attribute. For example, a ProductCatalog table can have ProductID as its primary key. DynamoDB builds an unordered hash index on this primary key attribute.

This means that every row is keyed off of this value. Every row in DynamoDB will have a required, unique value for this attribute. Unordered hash index means what is says - the data is not ordered and you are not given any guarantees into how the data is stored. You won't be able to make queries on an unordered index such as Get me all rows that have a ProductID greater than X. You write and fetch items based on the hash key. For example, Get me the row from that table that has ProductID X. You are making a query against an unordered index so your gets against it are basically key-value lookups, are very fast, and use very little throughput.

Hash and Range Primary Key – The primary key is made of two attributes. The first attribute is the hash attribute and the second attribute is the range attribute. For example, the forum Thread table can have ForumName and Subject as its primary key, where ForumName is the hash attribute and Subject is the range attribute. DynamoDB builds an unordered hash index on the hash attribute and a sorted range index on the range attribute.

This means that every row's primary key is the combination of the hash and range key. You can make direct gets on single rows if you have both the hash and range key, or you can make a query against the sorted range index. For example, get Get me all rows from the table with Hash key X that have range keys greater than Y, or other queries to that affect. They have better performance and less capacity usage compared to Scans and Queries against fields that are not indexed. From their documentation:

Query results are always sorted by the range key. If the data type of the range key is Number, the results are returned in numeric order; otherwise, the results are returned in order of ASCII character code values. By default, the sort order is ascending. To reverse the order, set the ScanIndexForward parameter to false

I probably missed some things as I typed this out and I only scratched the surface. There are a lot more aspects to take into consideration when working with DynamoDB tables (throughput, consistency, capacity, other indices, key distribution, etc.). You should take a look at the sample tables and data page for examples.

ACID and BASE are consistency models for RDBMS and NoSQL respectively. ACID transactions are far more pessimistic i.e. they are more worried about data safety. In the NoSQL database world, ACID transactions are less fashionable as some databases have loosened the requirements for immediate consistency, data freshness and accuracy in order to gain other benefits, like scalability and resiliency.

BASE stands for -

• Basic Availability - The database appears to work most of the time.
• Soft-state - Stores don't have to be write-consistent, nor do different replicas have to be mutually consistent all the time.
• Eventual consistency - Stores exhibit consistency at some later point (e.g., lazily at read time).

Therefore BASE relaxes consistency to allow the system to process request even in an inconsistent state.

Example: No one would mind if their tweet were inconsistent within their social network for a short period of time. It is more important to get an immediate response than to have a consistent state of users' information.

Let's start with the need for scaling that is increasing resources so that your system can now handle more requests than it earlier could.

When you realise your system is getting slow and is unable to handle the current number of requests, you need to scale the system.

This provides you with two options. Either you increase the resources in the server which you are using currently, i.e, increase the amount of RAM, CPU, GPU and other resources. This is known as vertical scaling.

Vertical scaling is typically costly. It does not make the system fault tolerant, i.e if you are scaling application running with single server, if that server goes down, your system will go down. Also the amount of threads remains the same in vertical scaling. Vertical scaling may require your system to go down for a moment when process takes place. Increasing resources on a server requires a restart and put your system down.

Another solution to this problem is increasing the amount of servers present in the system. This solution is highly used in the tech industry. This will eventually decrease the request per second rate in each server. If you need to scale the system, just add another server, and you are done. You would not be required to restart the system. Number of threads in each system decreases leading to high throughput. To segregate the requests, equally to each of the application server, you need to add load balancer which would act as reverse proxy to the web servers. This whole system can be called as a single cluster. Your system may contain a large number of requests which would require more amount of clusters like this.

Hope you get the whole concept of introducing scaling to the system.

Another important difference, that wasn't mentioned in any answer above, is that there is no equality operator for json type, but there is one for jsonb.

This means that you can't use DISTINCT keyword when selecting this json-type and/or other fields from a table (you can use DISTINCT ON instead, but it's not always possible because of cases like this).

Approach I followed to solve this problem is by created a Global Secondary Index as below. Not sure if this is the best approach but hopefully if it is useful to someone.

Hash Key                 | Range Key
------------------------------------
Date value of CreatedAt  | CreatedAt

Limitation imposed on the HTTP API user to specify the number of days to retrieve data, defaulted to 24 hr.

This way, I can always specify the HashKey as Current date's day and RangeKey can use > and < operators while retrieving. This way the data is also spread across multiple shards.

The simplest way is,

1. Create folder C:\data\db
2. Create file C:\data\db\log.txt

3. Open command prompt as "Run as Administrator" and make sure the mogodb bin directory path is correct and write

   C:\Program Files\MongoDB\Server\3.4\bin> mongod.exe --install mongod --dbpath="c:\data\db" --logpath="c:\data\db\log.txt" 
   

4. Start mongodb service:

   net run MongoDB
   

doc.id gets the UID.

Combine with the rest of the data for one object like so:

Object.assign({ uid: doc.id }, doc.data())

I know this is for php, but I got here looking for a solution for node. Using mongoskin:

mongodb.admin().ping(function(err) {
    if(err === null)
        // true - you got a conntion, congratulations
    else if(err.message.indexOf('failed to connect') !== -1)
        // false - database isn't around
    else
        // actual error, do something about it
})

With other drivers, you can attempt to make a connection and if it fails, you know the mongo server's down. Mongoskin needs to actually make some call (like ping) because it connects lazily. For php, you can use the try-to-connect method. Make a script!

PHP:

$dbIsRunning = true
try {
  $m = new MongoClient('localhost:27017');
} catch($e) {
  $dbIsRunning = false
}

I've just finished a releaseable version of a clientside JS-lib (defiant.js) that does what you're looking for. With defiant.js, you can query a JSON structure with the XPath expressions you're familiar with (no new syntax expressions as in JSONPath).

Example of how it works (see it in browser here http://defiantjs.com/defiant.js/demo/sum.avg.htm):

var data = [
       { "x": 2, "y": 0 },
       { "x": 3, "y": 1 },
       { "x": 4, "y": 1 },
       { "x": 2, "y": 1 }
    ],
    res = JSON.search( data, '//*[ y > 0 ]' );

console.log( res.sum('x') );
// 9
console.log( res.avg('x') );
// 3
console.log( res.min('x') );
// 2
console.log( res.max('x') );
// 4

As you can see, DefiantJS extends the global object JSON with a search function and the returned array is delivered with aggregate functions. DefiantJS contains a few other functionalities but those are out of the scope for this subject. Anywho, you can test the lib with a clientside XPath Evaluator. I think people not familiar with XPath will find this evaluator useful.
http://defiantjs.com/#xpath_evaluator

More information about defiant.js
http://defiantjs.com/
https://github.com/hbi99/defiant.js

I hope you find it useful... Regards

You have two options:

• FLUSHDB - clears currently active database
• FLUSHALL - clears all the existing databases

Maybe this resource is useful helping decide between both. It also discusses several other NoSQL databases, and offers a short list of characteristics, along with a "what I would use it for" explanation for each of them.

http://kkovacs.eu/cassandra-vs-mongodb-vs-couchdb-vs-redis

if you are using mongoose try this,after mongoose connection

async ()=> await Mongoose.model("collectionName").updateMany({}, {$set: {newField: value}})

For Mongo version > 2.2, add a field multi and set it to true

db.Collection.update({query}, 
                 {$set: {field1: "f1", field2: "f2"}},
                 {multi: true })

From mongodb.com:

NoSQL databases differ from older, relational technology in four main areas:

Data models: A NoSQL database lets you build an application without having to define the schema first unlike relational databases which make you define your schema before you can add any data to the system. No predefined schema makes NoSQL databases much easier to update as your data and requirements change.

Data structure: Relational databases were built in an era where data was fairly structured and clearly defined by their relationships. NoSQL databases are designed to handle unstructured data (e.g., texts, social media posts, video, email) which makes up much of the data that exists today.

Scaling: It’s much cheaper to scale a NoSQL database than a relational database because you can add capacity by scaling out over cheap, commodity servers. Relational databases, on the other hand, require a single server to host your entire database. To scale, you need to buy a bigger, more expensive server.

Development model: NoSQL databases are open source whereas relational databases typically are closed source with licensing fees baked into the use of their software. With NoSQL, you can get started on a project without any heavy investments in software fees upfront.

One of the best options is to go for MongoDB(NOSql dB) that supports scalability.Stores large amounts of data nothing but bigdata in the form of documents unlike rows and tables in sql.This is fasters that follows sharding of the data.Uses replicasets to ensure data guarantee that maintains multiple servers having primary db server as the base. Language independent. Flexible to use

I think Nosql is "more suitable" in these scenarios at least (more supplementary is welcome)

1. Easy to scale horizontally by just adding more nodes.

2. Query on large data set

   Imagine tons of tweets posted on twitter every day. In RDMS, there could be tables with millions (or billions?) of rows, and you don't want to do query on those tables directly, not even mentioning, most of time, table joins are also needed for complex queries.

3. Disk I/O bottleneck

   If a website needs to send results to different users based on users' real-time info, we are probably talking about tens or hundreds of thousands of SQL read/write requests per second. Then disk i/o will be a serious bottleneck.

if you have done the design in XML and want to show one of the checkbox in the group as checked when loading the page below solutions can help you

    <RadioGroup
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/txtLastNameSignUp"
        android:layout_margin="20dp"
        android:orientation="horizontal"
        android:id="@+id/radioGroup">
<RadioButton
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:checked="true"
    android:id="@+id/Male"
    android:text="Male"/>
        <RadioButton
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/Female"
            android:text="Female"/>
        </RadioGroup>

You may be able to use absolute positioning.

The container box should be set to position: relative.

The top-right text should be set to position: absolute; top: 0; right: 0. The bottom-right text should be set to position: absolute; bottom: 0; right: 0.

You'll need to experiment with padding to stop the main contents of the box from running underneath the absolute positioned elements, as they exist outside the normal flow of the text contents.

<!DOCTYPE html>

<html>

<head>
<title>Hello!</title>
<script>
function notify(){

if (Notification.permission !== "granted") {
Notification.requestPermission();
}
 else{
var notification = new Notification('hello', {
  body: "Hey there!",
});
notification.onclick = function () {
  window.open("http://google.com");
};
}
}
</script>
</head>

<body>
<button onclick="notify()">Notify</button>
</body>

I've found that the above solution will not work if you have to deal with control characters like 02 (STX) or 03 (ETX), anything under 10 will be read as a single digit and throw off everything after. I ran into this problem trying to parse through serial communications. So, I first took the hex string received and put it in a buffer object then converted the hex string into an array of the strings like so:

buf = Buffer.from(data, 'hex');
l = Buffer.byteLength(buf,'hex');
for (i=0; i<l; i++){

    char = buf.toString('hex', i, i+1);
    msgArray.push(char);

}

Then .join it

message = msgArray.join('');

then I created a hexToAscii function just like in @Delan Azabani's answer above...

function hexToAscii(str){
    hexString = str;
    strOut = '';
        for (x = 0; x < hexString.length; x += 2) {
            strOut += String.fromCharCode(parseInt(hexString.substr(x, 2), 16));
        }
    return strOut;    
}

then called the hexToAscii function on 'message'

message = hexToAscii(message);

This approach also allowed me to iterate through the array and slice into the different parts of the transmission using the control characters so I could then deal with only the part of the data I wanted. Hope this helps someone else!

Code :

var now = new Date();
var time = now.getTime();
time += 3600 * 1000;
now.setTime(time);
document.cookie = 
'username=' + value + 
'; expires=' + now.toUTCString() + 
'; path=/';

You could use a CURSOR in this case:

DECLARE @id INT
DECLARE @name NVARCHAR(100)
DECLARE @getid CURSOR

SET @getid = CURSOR FOR
SELECT table.id,
       table.name
FROM   table

OPEN @getid
FETCH NEXT
FROM @getid INTO @id, @name
WHILE @@FETCH_STATUS = 0
BEGIN
    EXEC stored_proc @varName=@id, @otherVarName='test', @varForName=@name
    FETCH NEXT
    FROM @getid INTO @id, @name
END

CLOSE @getid
DEALLOCATE @getid

Modified to show multiple parameters from the table.

If your tiles are not in your bundle, either copied from the bundle or downloaded from the internet you can get the directory like this

NSString *documentdir = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
NSString *tileDirectory = [documentdir stringByAppendingPathComponent:@"xxxx/Tiles"];
NSLog(@"Tile Directory: %@", tileDirectory);

Quote_Month (Worksheet!$D:$D) contains a formula (=TEXT(Worksheet!$E:$E,"mmm-yy"))to convert a date/time number from another column into a text based month reference.

You can use OR by adding + in Sumproduct. See this

=SUMPRODUCT((Quote_Value)*(Salesman="JBloggs")*(Days_To_Close<=90)*((Quote_Month="Cond1")+(Quote_Month="Cond2")+(Quote_Month="Cond3")))

ScreenShot

If you want to refresh previous activity, this solution should work:

In previous activity where you want to refresh:

@Override
public void onRestart()
{
    super.onRestart();
    // do some stuff here
}

I better use the .prop to change the className and it worked perfectly:

$(#td_id).prop('className','newClass');

for this line of code you just have to change the name of newClass, and of course the id of the element, in the next exemple : idelementinyourpage

$(#idelementinyourpage).prop('className','newClass');

By the way, when you want to search which style is applied to any element, you just click F12 on your browser when your page is shown, and then select in the tab of DOM Explorer, the element you want to see. In Styles you now can see what styles are applied to your element and from which class its reading.

Another alternative of the curl-less method above is to use the native stream functions:

• stream_context_create():

  Creates and returns a stream context with any options supplied in options preset.

• stream_get_contents():

  Identical to file_get_contents(), except that stream_get_contents() operates on an already open stream resource and returns the remaining contents in a string, up to maxlength bytes and starting at the specified offset.

A POST function with these can simply be like this:

<?php

function post_request($url, array $params) {
  $query_content = http_build_query($params);
  $fp = fopen($url, 'r', FALSE, // do not use_include_path
    stream_context_create([
    'http' => [
      'header'  => [ // header array does not need '\r\n'
        'Content-type: application/x-www-form-urlencoded',
        'Content-Length: ' . strlen($query_content)
      ],
      'method'  => 'POST',
      'content' => $query_content
    ]
  ]));
  if ($fp === FALSE) {
    return json_encode(['error' => 'Failed to get contents...']);
  }
  $result = stream_get_contents($fp); // no maxlength/offset
  fclose($fp);
  return $result;
}

You can do this:

([0-9]+) (\([^)]+\))? Z

This will not work with nested parens for Y, however. Nesting requires recursion which isn't strictly regular any more (but context-free). Modern regexp engines can still handle it, albeit with some difficulties (back-references).

You need to add query.addEntity(SwitcherServiceSource.class) before calling the .list() on query.

I just ran over this one and I found by accident that CLOBs can be used in a like query:

   UPDATE IMS_TEST 
   SET TEST_Category  = 'just testing'  
 WHERE TEST_SCRIPT    LIKE '%something%'
   AND ID             = '10000239' 

This worked also for CLOBs greater than 4K

The Performance won't be great but that was no problem in my case.

I'm hoping your problem has been solved by now. If not, try this... It looks like you have server=y for both your app and IDEA. IDEA should probably be server=n. Also, the (IDEA) client should have an address that includes both the host name and the port, e.g., address=127.0.0.1:9009.

e.preventDefault();

It simply stops the default action of an element.

Instance Ex.:-

prevents the hyperlink from following the URL, prevents the submit button to submit the form. When you have many event handlers and you just want to prevent default event from occuring, & occuring from many times, for that we need to use in the top of the function().

Reason:-

The reason to use e.preventDefault(); is that in our code so something goes wrong in the code, then it will allow to execute the link or form to get submitted or allow to execute or allow whatever action you need to do. & link or submit button will get submitted & still allow further propagation of the event.

<!DOCTYPE html>_x000D_
<html lang="en" dir="ltr">_x000D_
   <head>_x000D_
      <meta charset="utf-8">_x000D_
      <title></title>_x000D_
   </head>_x000D_
   <body>_x000D_
      <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
      <a href="https://www.google.com" onclick="doSomethingElse()">Preventsss page from redirect</a>_x000D_
      <script type="text/javascript">_x000D_
         function doSomethingElse(){_x000D_
           console.log("This is Test...");_x000D_
         }_x000D_
         $("a").click(function(e){_x000D_
          e.preventDefault(); _x000D_
         });_x000D_
      </script>_x000D_
   </body>_x000D_
</html>

return False;

It simply stops the execution of the function().

"return false;" will end the whole execution of process.

Reason:-

The reason to use return false; is that you don't want to execute the function any more in strictly mode.

<!DOCTYPE html>_x000D_
<html lang="en" dir="ltr">_x000D_
   <head>_x000D_
      <meta charset="utf-8">_x000D_
      <title></title>_x000D_
   </head>_x000D_
   <body>_x000D_
      <a href="#" onclick="returnFalse();">Blah</a>_x000D_
      <script type="text/javascript">_x000D_
         function returnFalse(){_x000D_
         console.log("returns false without location redirection....")_x000D_
             return false;_x000D_
             location.href = "http://www.google.com/";_x000D_
         _x000D_
         }_x000D_
      </script>_x000D_
   </body>_x000D_
</html>

>>> import datetime
>>> datetime.date.fromordinal(datetime.date.today().toordinal()-1).strftime("%F")
'2015-05-26'

I was getting this error because I was importing a reusable component from an npm library and the versions of react-router-dom did not match.

So make sure you use the same version in both places!

To remove the line and print the output to standard out:

sed '/pattern to match/d' ./infile

To directly modify the file – does not work with BSD sed:

sed -i '/pattern to match/d' ./infile

Same, but for BSD sed (Mac OS X and FreeBSD) – does not work with GNU sed:

sed -i '' '/pattern to match/d' ./infile

To directly modify the file (and create a backup) – works with BSD and GNU sed:

sed -i.bak '/pattern to match/d' ./infile

On Windows, it's native with Win32 api...

How about:

current(array_slice($array, -1))

• works for associative arrays
• works when $array == [] (returns false)
• doesn't affect the original array

It's just PHP, not HTML.

It parses all HTML fields with [] into an array.

So you can have

<input type="checkbox" name="food[]" value="apple" />
<input type="checkbox" name="food[]" value="pear" />

and when submitted, PHP will make $_POST['food'] an array, and you can access its elements like so:

echo $_POST['food'][0]; // would output first checkbox selected

or to see all values selected:

foreach( $_POST['food'] as $value ) {
    print $value;
}

Anyhow, don't think there is a specific name for it

The purpose of meshgrid is to create a rectangular grid out of an array of x values and an array of y values.

So, for example, if we want to create a grid where we have a point at each integer value between 0 and 4 in both the x and y directions. To create a rectangular grid, we need every combination of the x and y points.

This is going to be 25 points, right? So if we wanted to create an x and y array for all of these points, we could do the following.

x[0,0] = 0    y[0,0] = 0
x[0,1] = 1    y[0,1] = 0
x[0,2] = 2    y[0,2] = 0
x[0,3] = 3    y[0,3] = 0
x[0,4] = 4    y[0,4] = 0
x[1,0] = 0    y[1,0] = 1
x[1,1] = 1    y[1,1] = 1
...
x[4,3] = 3    y[4,3] = 4
x[4,4] = 4    y[4,4] = 4

This would result in the following x and y matrices, such that the pairing of the corresponding element in each matrix gives the x and y coordinates of a point in the grid.

x =   0 1 2 3 4        y =   0 0 0 0 0
      0 1 2 3 4              1 1 1 1 1
      0 1 2 3 4              2 2 2 2 2
      0 1 2 3 4              3 3 3 3 3
      0 1 2 3 4              4 4 4 4 4

We can then plot these to verify that they are a grid:

plt.plot(x,y, marker='.', color='k', linestyle='none')

Obviously, this gets very tedious especially for large ranges of x and y. Instead, meshgrid can actually generate this for us: all we have to specify are the unique x and y values.

xvalues = np.array([0, 1, 2, 3, 4]);
yvalues = np.array([0, 1, 2, 3, 4]);

Now, when we call meshgrid, we get the previous output automatically.

xx, yy = np.meshgrid(xvalues, yvalues)

plt.plot(xx, yy, marker='.', color='k', linestyle='none')

Creation of these rectangular grids is useful for a number of tasks. In the example that you have provided in your post, it is simply a way to sample a function (sin(x**2 + y**2) / (x**2 + y**2)) over a range of values for x and y.

Because this function has been sampled on a rectangular grid, the function can now be visualized as an "image".

Additionally, the result can now be passed to functions which expect data on rectangular grid (i.e. contourf)

int is a primitive datatype whereas Integer is an object. Creating an object with Integer will give you access to all the methods that are available in the Integer class. But, if you create a primitive data type with int, you will not be able to use those inbuild methods and you have to define them by yourself. But, if you don't want any other methods and want to make the program more memory efficient, you can go with primitive datatype because creating an object will increase the memory consumption.

UIPanGestureRecognizer * pan1 = [[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(moveObject:)];
pan1.minimumNumberOfTouches = 1;
[image1 addGestureRecognizer:pan1];

-(void)moveObject:(UIPanGestureRecognizer *)pan;
{
 image1.center = [pan locationInView:image1.superview];
}

I agree that cygwin/OpenSSH is the best choice, but its setup can be involved to say the least. Here is a document to get you started though: Installing OpenSSH

1. Go to https://pypi.org/project/openpyxl/#files
2. Download the file and unzip in your pc in the main folder, there's a file call setup.py
3. Install with this command: python setup.py install

Define a class like this :

public class myclass {
       string id ;
       string title ;
       string content;
 }

 public class program {
        public void Main () {
               List<myclass> objlist = new List<myclass> () ;
               foreach (var value in objlist)  {
                       TextBox1.Text = value.id ;
                       TextBox2.Text= value.title;
                       TextBox3.Text= value.content ;
                }
         }
  }

I tried to draw a sketch and you can improve it in many ways. Instead of defining class "myclass", you can define struct.

Had the same issue, but my code must work on both PHP 5 & PHP 7..

Here is my piece of code, which solved this.. Input a date in dmY format with one of delimiters "/ . -"

<?php
function DateToEN($date){
  if ($date!=""){
    list($d, $m, $y) = function_exists("split") ?  split("[/.-]", $date) : preg_split("/[\/\.\-]+/", $date);
    return $y."-".$m."-".$d;
  }else{
    return false;
  }
}
?>

Disable xdebug

For PHP 7: sudo nano /etc/php/7.0/cli/conf.d/20-xdebug.ini

For PHP 5: sudo nano /etc/php5/cli/conf.d/20-xdebug.ini

Then comment out everything and save.

UPDATE -- Disable for CLI only

As per @igoemon's comment, this is a better method:

PHP 7.0 (NGINX)

sudo mv /etc/php/7.0/cli/conf.d/20-xdebug.ini /etc/php/7.0/cli/conf.d/20-xdebug.ini.old
sudo service nginx restart

Note: Update the path to your version of PHP.

Just before your "Content of the letter" line, add \thispagestyle{fancy} and it should show the headers you defined. (It worked for me.)

Here's the full document that I used to test:

\documentclass[12pt]{letter}

\usepackage{fontspec}% font selecting commands 
\usepackage{xunicode}% unicode character macros 
\usepackage{xltxtra} % some fixes/extras 

% page counting, header/footer
\usepackage{fancyhdr}
\usepackage{lastpage}

\pagestyle{fancy}
\lhead{\footnotesize \parbox{11cm}{Draft 1} }
\lfoot{\footnotesize \parbox{11cm}{\textit{2}}}
\cfoot{}
\rhead{\footnotesize 3}
\rfoot{\footnotesize Page \thepage\ of \pageref{LastPage}}
\renewcommand{\headheight}{24pt}
\renewcommand{\footrulewidth}{0.4pt}

\usepackage{lipsum}% provides filler text

\begin{document}
\name{ Joe Laroo }
\signature{ Joe Laroo }
\begin{letter}{ To-Address }
\renewcommand{\today}{ February 16, 2009 }
\opening{ Opening }

\thispagestyle{fancy}% sets the current page style to 'fancy' -- must occur *after* \opening
\lipsum[1-10]% just dumps ten paragraphs of filler text

\closing{ Yours truly, }
\end{letter}
\end{document}

The \opening command sets the page style to firstpage or empty, so you have to use \thispagestyle after that command.

you may use

ImageSourceConverter class

to get what you want

    img1.Source = (ImageSource)new ImageSourceConverter().ConvertFromString("/Assets/check.png");

I like to think of an extern variable as a promise that you make to the compiler.

When encountering an extern, the compiler can only find out its type, not where it "lives", so it can't resolve the reference.

You are telling it, "Trust me. At link time this reference will be resolvable."

OBSOLETE ANSWER - VERIFIED NOVEMBER 17, 2020

On Mac, I needed to go to Preferences > Accounts, then add a new account as Bitbucket Server and enter my company's bitbucket server URL. Then I had to choose HTTPS as the protocol and enter my username (without @email) and password.

Also I set this new account as the default account by clicking the Set Default... button in the bottom of the Preferences > Account page.

In Java, you cannot set a value in ArrayList by assigning to it, there's a set() method to call:

String a = words.get(0);
words.set(0, words.get(words.size() - 1));
words.set(words.size() - 1, a)

A lot of good responses here; I especially like the lambda expressions...very clean. I was remiss, however, in not specifying the type of Collection. This is a SPRoleAssignmentCollection (from MOSS) that only has Remove(int) and Remove(SPPrincipal), not the handy RemoveAll(). So, I have settled on this, unless there is a better suggestion.

foreach (SPRoleAssignment spAssignment in workspace.RoleAssignments)
{
    if (spAssignment.Member.Name != shortName) continue;
    workspace.RoleAssignments.Remove((SPPrincipal)spAssignment.Member);
    break;
}

You have to use GROUP BY so you will have multiple records returned,

SELECT  COUNT(*) TotalCount, 
        b.category_id, 
        b.category_name 
FROM    table1 a
        INNER JOIN table2 b
            ON a.category_id = b.category_id 
WHERE   a.colour <> 'red'
GROUP   BY b.category_id, b.category_name

For all who search to return something and then for another call throw exception:

when(mockFoo.someMethod())
        .thenReturn(obj1)
        .thenReturn(obj2)
        .thenThrow(new RuntimeException("Fail"));

or

when(mockFoo.someMethod())
        .thenReturn(obj1, obj2)
        .thenThrow(new RuntimeException("Fail"));

From the docs (note: MSDN is a handy resource when you want to know what things do!):

ExecuteScalar

Use the ExecuteScalar method to retrieve a single value (for example, an aggregate value) from a database. This requires less code than using the ExecuteReader method, and then performing the operations that you need to generate the single value using the data returned by a SqlDataReader.

ExecuteReader

Sends the CommandText to the Connection and builds a SqlDataReader.

... and from SqlDataReader ...

Provides a way of reading a forward-only stream of rows from a SQL Server database. This class cannot be inherited.

ExecuteNonQuery

You can use the ExecuteNonQuery to perform catalog operations (for example, querying the structure of a database or creating database objects such as tables), or to change the data in a database without using a DataSet by executing UPDATE, INSERT, or DELETE statements.

 root/
   assets/
      lib/-------------------------libraries--------------------
          bootstrap/--------------Libraries can have js/css/images------------
              css/
              js/
              images/  
          jquery/
              js/
          font-awesome/
              css/
              images/
     common/--------------------common section will have application level resources             
          css/
          js/
          img/

 index.html

This is how I organized my application's static resources.

In order for a bot to send a message, you need <client>.send() , the client is where the bot will send a message to(A channel, everywhere in the server, or a PM). Since you want the bot to PM a certain user, you can use message.author as your client. (you can replace author as mentioned user in a message or something, etc)

Hence, the answer is: message.author.send("Your message here.")

I recommend looking up the Discord.js documentation about a certain object's properties whenever you get stuck, you might find a particular function that may serve as your solution.

In case anyone is still looking for this functionality: I made an Android library that has this ability and much more, called ExpandableFab (https://github.com/nambicompany/expandable-fab).

The Material Design spec refers to this functionality as 'Speed Dial' and ExpandableFab implements it along with many additional features.

Nearly everything is customizable (colors, text, size, placement, margins, animations and more) and optional (don't need an Overlay, or FabOptions, or Labels, or icons, etc). Every property can be accessed or set through XML layouts or programmatically - whatever you prefer.

Written 100% in Kotlin but comes with full JavaDoc and KDoc (published API is well documented). Also comes with an example app so you can see different use cases with 0 coding.

Github: https://github.com/nambicompany/expandable-fab

Library website (w/ links to full documentation): https://nambicompany.github.io/expandable-fab/

Perhaps you're trying to modularize your package. I'm assuming that package1 and package2 are, in a way, part of the same package but for readability you're splitting those into multiple files.

If the previous case was yours, you could use the same package name into those multiples files and it will be like if there were the same file.

This is an example:

add.go

package math

func add(n1, n2 int) int {
   return n1 + n2
}

subtract.go

package math

func subtract(n1, n2 int) int {
    return n1 - n2
}

donothing.go

package math

func donothing(n1, n2 int) int {
    s := add(n1, n2)
    s = subtract(n1, n2)
    return s
}

I am not a Go expert and this is my first post in StackOveflow, so if you have some advice it will be well received.

This was asked some time ago now, but based on the answer that @nacho_zona3 provided, and previous experience with fragments, the issue is that the views have not been created by the time you are trying to find them with the findViewById() method in onCreate() to fix this, move the following code:

// 1. get a reference to recyclerView
RecyclerView recyclerView = (RecyclerView) findViewById(R.id.list);

// 2. set layoutManger
recyclerView.setLayoutManager(new LinearLayoutManager(this));

// this is data fro recycler view
ItemData itemsData[] = { new ItemData("Indigo",R.drawable.circle),
        new ItemData("Red",R.drawable.color_ic_launcher),
        new ItemData("Blue",R.drawable.indigo),
        new ItemData("Green",R.drawable.circle),
        new ItemData("Amber",R.drawable.color_ic_launcher),
        new ItemData("Deep Orange",R.drawable.indigo)};


// 3. create an adapter
MyAdapter mAdapter = new MyAdapter(itemsData);
// 4. set adapter
recyclerView.setAdapter(mAdapter);
// 5. set item animator to DefaultAnimator
recyclerView.setItemAnimator(new DefaultItemAnimator()); 

to your fragment's onCreateView() call. A small amount of refactoring is required because all variables and methods called from this method have to be static. The final code should look like:

 public class ColorsFragment extends Fragment {

     public ColorsFragment() {}

     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
         Bundle savedInstanceState) {

         View rootView = inflater.inflate(R.layout.fragment_colors, container, false);
         // 1. get a reference to recyclerView
         RecyclerView recyclerView = (RecyclerView) rootView.findViewById(R.id.list);

         // 2. set layoutManger
         recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));

         // this is data fro recycler view
         ItemData itemsData[] = {
             new ItemData("Indigo", R.drawable.circle),
                 new ItemData("Red", R.drawable.color_ic_launcher),
                 new ItemData("Blue", R.drawable.indigo),
                 new ItemData("Green", R.drawable.circle),
                 new ItemData("Amber", R.drawable.color_ic_launcher),
                 new ItemData("Deep Orange", R.drawable.indigo)
         };


         // 3. create an adapter
         MyAdapter mAdapter = new MyAdapter(itemsData);
         // 4. set adapter
         recyclerView.setAdapter(mAdapter);
         // 5. set item animator to DefaultAnimator
         recyclerView.setItemAnimator(new DefaultItemAnimator());

         return rootView;
     }
 }

So the main thing here is that anywhere you call findViewById() you will need to use rootView.findViewById()

Try this

public class NetworkUtil {
    public static final int TYPE_WIFI = 1;
    public static final int TYPE_MOBILE = 2;
    public static final int TYPE_NOT_CONNECTED = 0;
    public static final int NETWORK_STATUS_NOT_CONNECTED = 0;
    public static final int NETWORK_STATUS_WIFI = 1;
    public static final int NETWORK_STATUS_MOBILE = 2;

    public static int getConnectivityStatus(Context context) {
        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);

        NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
        if (null != activeNetwork) {
            if(activeNetwork.getType() == ConnectivityManager.TYPE_WIFI)
                return TYPE_WIFI;

            if(activeNetwork.getType() == ConnectivityManager.TYPE_MOBILE)
                return TYPE_MOBILE;
        } 
        return TYPE_NOT_CONNECTED;
    }

    public static int getConnectivityStatusString(Context context) {
        int conn = NetworkUtil.getConnectivityStatus(context);
        int status = 0;
        if (conn == NetworkUtil.TYPE_WIFI) {
            status = NETWORK_STATUS_WIFI;
        } else if (conn == NetworkUtil.TYPE_MOBILE) {
            status = NETWORK_STATUS_MOBILE;
        } else if (conn == NetworkUtil.TYPE_NOT_CONNECTED) {
            status = NETWORK_STATUS_NOT_CONNECTED;
        }
        return status;
    }
}

And for the BroadcastReceiver

public class NetworkChangeReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(final Context context, final Intent intent) {

        int status = NetworkUtil.getConnectivityStatusString(context);
        Log.e("Sulod sa network reciever", "Sulod sa network reciever");
        if ("android.net.conn.CONNECTIVITY_CHANGE".equals(intent.getAction())) {
            if (status == NetworkUtil.NETWORK_STATUS_NOT_CONNECTED) {
                new ForceExitPause(context).execute();
            } else {
                new ResumeForceExitPause(context).execute();
            }
       }
    }
}

Don't forget to put this into your AndroidManifest.xml

 <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
 <uses-permission android:name="android.permission.INTERNET" />
 <receiver
        android:name="NetworkChangeReceiver"
        android:label="NetworkChangeReceiver" >
        <intent-filter>
            <action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
            <action android:name="android.net.wifi.WIFI_STATE_CHANGED" />
        </intent-filter>
    </receiver>

Hope this will help you Cheers!

In my experience, this message occurs when the primary file (.mdf) has no space to save the metadata of the database. This file include the system tables and they only save their data into it.

Make some space in the file and the commands works again. That's all, Enjoy

Here is what I came up with ( and like all Date Time conundrums it is probably going to be disproved based on some weird timezone-leapyear-daylight adjustment :D )

Round-tripping: Date <<->> LocalDateTime

Given: Date date = [some date]

(1) LocalDateTime << Instant<< Date

    Instant instant = Instant.ofEpochMilli(date.getTime());
    LocalDateTime ldt = LocalDateTime.ofInstant(instant, ZoneOffset.UTC);

(2) Date << Instant << LocalDateTime

    Instant instant = ldt.toInstant(ZoneOffset.UTC);
    Date date = Date.from(instant);

Example:

Given:

Date date = new Date();
System.out.println(date + " long: " + date.getTime());

(1) LocalDateTime << Instant<< Date:

Create Instant from Date:

Instant instant = Instant.ofEpochMilli(date.getTime());
System.out.println("Instant from Date:\n" + instant);

Create Date from Instant (not necessary,but for illustration):

date = Date.from(instant);
System.out.println("Date from Instant:\n" + date + " long: " + date.getTime());

Create LocalDateTime from Instant

LocalDateTime ldt = LocalDateTime.ofInstant(instant, ZoneOffset.UTC);
System.out.println("LocalDateTime from Instant:\n" + ldt);

(2) Date << Instant << LocalDateTime

Create Instant from LocalDateTime:

instant = ldt.toInstant(ZoneOffset.UTC);
System.out.println("Instant from LocalDateTime:\n" + instant);

Create Date from Instant:

date = Date.from(instant);
System.out.println("Date from Instant:\n" + date + " long: " + date.getTime());

The output is:

Fri Nov 01 07:13:04 PDT 2013 long: 1383315184574

Instant from Date:
2013-11-01T14:13:04.574Z

Date from Instant:
Fri Nov 01 07:13:04 PDT 2013 long: 1383315184574

LocalDateTime from Instant:
2013-11-01T14:13:04.574

Instant from LocalDateTime:
2013-11-01T14:13:04.574Z

Date from Instant:
Fri Nov 01 07:13:04 PDT 2013 long: 1383315184574

How to Bold entire row 10 example:

workSheet.Cells[10, 1].EntireRow.Font.Bold = true;    

More formally:

Microsoft.Office.Interop.Excel.Range rng = workSheet.Cells[10, 1] as Xl.Range;
rng.EntireRow.Font.Bold = true;

How to Bold Specific Cell 'A10' for example:

workSheet.Cells[10, 1].Font.Bold = true;

Little more formal:

int row = 1;
int column = 1;  /// 1 = 'A' in Excel

Microsoft.Office.Interop.Excel.Range rng = workSheet.Cells[row, column] as Xl.Range;
rng.Font.Bold = true;

you can use this for example

$array = json_decode($string,true)

but validate the Json before. You can validate from http://jsonviewer.stack.hu/

The same as Evo's, but with arbitrary number of strings to compare:

def common_start(*strings):
    """ Returns the longest common substring
        from the beginning of the `strings`
    """
    def _iter():
        for z in zip(*strings):
            if z.count(z[0]) == len(z):  # check all elements in `z` are the same
                yield z[0]
            else:
                return

    return ''.join(_iter())

If you are using SQL Server (starting with 2008), choose one of this:

• CONVERT(DATETIME2(0), YourDateField)
• LEFT(RTRIM(CONVERT(DATETIMEOFFSET, YourDateField)), 19)
• CONVERT(DATETIMEOFFSET(0), YourDateField) -- with the addition of a time zone offset

A combination of answers by Beorn Harris and loentar gives one more interesting one-liner test:

delim=$'\x1F' # define a control code to be used as more or less reliable delimiter
if [[ "${delim}${array[@]}${delim}" =~ "${delim}a string to test${delim}" ]]; then
    echo "contains 'a string to test'"
fi

This one does not use extra functions, does not make replacements for testing and adds extra protection against occasional false matches using a control code as a delimiter.

UPD: Thanks to @ChrisCogdon note, this incorrect code was re-written and published as https://stackoverflow.com/a/58527681/972463 .

I haven't seen this anywhere, either, but my instinct would be that this means that the IF prevented the whole statement from executing.

Try to run the statement with a database where the IF passes.

Also check if there are any triggers involved which might change the result.

[EDIT] When the standard says that this function should never return -1, that doesn't enforce this. Java doesn't have pre and post conditions. A JDBC driver could return a random number and there was no way to stop it.

If it's important to know why this happens, run the statement against different database until you have tried all execution paths (i.e. one where the IF returns false and one where it returns true).

If it's not that important, mark it off as a "clever trick" by a Microsoft engineer and remember how much you liked it when you feel like being clever yourself next time.

It is not that truncate does not log anything in SQL Server. truncate does not log any information but it log the deallocation of data page for the table on which you fired TRUNCATE.

and truncated record can be rollback if we define transaction at beginning and we can recover the truncated record after rollback it. But can not recover truncated records from the transaction log backup after committed truncated transaction.

Relation in User model:

public function photos()
{
    return $this->hasMany('Photo');
}

Delete record and related:

$user = User::find($id);

// delete related   
$user->photos()->delete();

$user->delete();

Since ruby 2.4.0 you can use native Hash#transform_values method:

hash = {"a" => "b", "c" => "d"}
new_hash = hash.transform_values(&:upcase)
# => {"a" => "B", "c" => "D"}

There is also destructive Hash#transform_values! version.

That's because your dat1 and dat2 variables are just strings.

You should parse them to get a Date object, for that format I always use the following function:

// parse a date in yyyy-mm-dd format
function parseDate(input) {
  var parts = input.match(/(\d+)/g);
  // new Date(year, month [, date [, hours[, minutes[, seconds[, ms]]]]])
  return new Date(parts[0], parts[1]-1, parts[2]); // months are 0-based
}

I use this function because the Date.parse(string) (or new Date(string)) method is implementation dependent, and the yyyy-MM-dd format will work on modern browser but not on IE, so I prefer doing it manually.

EF Core 2.1+ :

Property:

public string[] Strings { get; set; }

OnModelCreating:

modelBuilder.Entity<YourEntity>()
            .Property(e => e.Strings)
            .HasConversion(
                v => string.Join(',', v),
                v => v.Split(',', StringSplitOptions.RemoveEmptyEntries));

Update (2021-02-14)

The PostgreSQL has an array data type and the Npgsql EF Core provider does support that. So it will map your C# arrays and lists to the PostgreSQL array data type automatically and no extra config is required. Also you can operate on the array and the operation will be translated to SQL.

More information on this page.

You can also use a Common Event for your RadioButtons, and you can use the Tag property to pass information to your string or you can use the Text Property if you want your string to hold the same value as the Text of your RadioButton.

Something like this.

private void radioButton_CheckedChanged(object sender, EventArgs e)
{
    if (((RadioButton)sender).Checked == true)
        sex = ((RadioButton)sender).Tag.ToString();
}

CSS solution no JS and no background image:

Method 1 "margin auto" ( IE8+ - NOT FF!):

div{_x000D_
  width:150px; _x000D_
  height:100px; _x000D_
  position:relative;_x000D_
  overflow:hidden;_x000D_
}_x000D_
div img{_x000D_
  position:absolute; _x000D_
  top:0; _x000D_
  bottom:0; _x000D_
  margin: auto;_x000D_
  width:100%;_x000D_
}

<p>Original:</p>_x000D_
<img src="http://i.stack.imgur.com/2OrtT.jpg" alt="image"/>_x000D_
_x000D_
<p>Wrapped:</p>_x000D_
<div>_x000D_
  <img src="http://i.stack.imgur.com/2OrtT.jpg" alt="image"/>_x000D_
</div>

http://jsfiddle.net/5xjr05dt/

Method 2 "transform" ( IE9+ ):

div{_x000D_
  width:150px; _x000D_
  height:100px; _x000D_
  position:relative;_x000D_
  overflow:hidden;_x000D_
}_x000D_
_x000D_
div img{_x000D_
  position:absolute; _x000D_
  width:100%;_x000D_
  top: 50%;_x000D_
  -ms-transform: translateY(-50%);_x000D_
  -webkit-transform: translateY(-50%);_x000D_
  transform: translateY(-50%);_x000D_
}

<p>Original:</p>_x000D_
<img src="http://i.stack.imgur.com/2OrtT.jpg" alt="image"/>_x000D_
_x000D_
<p>Wrapped:</p>_x000D_
<div>_x000D_
  <img src="http://i.stack.imgur.com/2OrtT.jpg" alt="image"/>_x000D_
</div>

http://jsfiddle.net/5xjr05dt/1/

Method 2 can be used to center an image in a fixed width / height container. Both can overflow - and if the image is smaller than the container it will still be centered.

http://jsfiddle.net/5xjr05dt/3/

Method 3 "double wrapper" ( IE8+ - NOT FF! ):

.outer{_x000D_
  width:150px; _x000D_
  height:100px; _x000D_
  margin: 200px auto; /* just for example */_x000D_
  border: 1px solid red; /* just for example */_x000D_
  /* overflow: hidden; */ /* TURN THIS ON */_x000D_
  position: relative;_x000D_
}_x000D_
.inner { _x000D_
    border: 1px solid green; /* just for example */_x000D_
    position: absolute;_x000D_
    top: 0;_x000D_
    bottom: 0;_x000D_
    margin: auto;_x000D_
    display: table;_x000D_
    left: 50%;_x000D_
}_x000D_
.inner img {_x000D_
    display: block;_x000D_
    border: 1px solid blue; /* just for example */_x000D_
    position: relative;_x000D_
    right: 50%;_x000D_
    opacity: .5; /* just for example */_x000D_
}

<div class="outer">_x000D_
  <div class="inner">_x000D_
     <img src="http://i.stack.imgur.com/2OrtT.jpg" alt="image"/>_x000D_
  </div>_x000D_
</div>

http://jsfiddle.net/5xjr05dt/5/

Method 4 "double wrapper AND double image" ( IE8+ ):

.outer{_x000D_
  width:150px; _x000D_
  height:100px; _x000D_
  margin: 200px auto; /* just for example */_x000D_
  border: 1px solid red; /* just for example */_x000D_
  /* overflow: hidden; */ /* TURN THIS ON */_x000D_
  position: relative;_x000D_
}_x000D_
.inner { _x000D_
    border: 1px solid green; /* just for example */_x000D_
    position: absolute;_x000D_
    top: 50%;_x000D_
    bottom: 0;_x000D_
    display: table;_x000D_
    left: 50%;_x000D_
}_x000D_
.inner .real_image {_x000D_
    display: block;_x000D_
    border: 1px solid blue; /* just for example */_x000D_
    position: absolute;_x000D_
    bottom: 50%;_x000D_
    right: 50%;_x000D_
    opacity: .5; /* just for example */_x000D_
}_x000D_
_x000D_
.inner .placeholder_image{_x000D_
  opacity: 0.1; /* should be 0 */_x000D_
}

<div class="outer">_x000D_
  <div class="inner">_x000D_
    <img class="real_image" src="http://i.stack.imgur.com/2OrtT.jpg" alt="image"/>_x000D_
    <img class="placeholder_image"  src="http://i.stack.imgur.com/2OrtT.jpg" alt="image"/>_x000D_
  </div>_x000D_
</div>

http://jsfiddle.net/5xjr05dt/26/

• Method 1 has slightly better support - you have to set the width OR height of image!
• With the prefixes method 2 also has decent support ( from ie9 up ) - Method 2 has no support on Opera mini!
• Method 3 uses two wrappers - can overflow width AND height.
• Method 4 uses a double image ( one as placeholder ) this gives some extra bandwidth overhead, but even better crossbrowser support.

Method 1 and 3 don't seem to work with Firefox

I also have one decision for this case with Bootstrap 3.3.5:

<div class="col-sm-5">
    <label for="date">
       <input type="date" placeholder="Date" id="date" class="form-control">         
    </label>
    <i class="glyphicon glyphicon-calendar col-sm-pull-2"></i>
</div>

On input I have something like this:

For JavaScript the best and simplest answer would seem to be /.\*/.

As suggested by others /(.*?)/ would work as well but /.\*/ is simpler. The () inside the pattern are not needed, as far as I can see nor the ending ? to match absolutely anything (including empty strings)

NON-SOLUTIONS:

• /[\s\S]/ does NOT match empty strings so it's not the solution.

• /[\s\S]\*/ DOES match also empty strings. But it has a problem: If you use it in your code then you can't comment out such code because the */ is interpreted as end-of-comment.

/([\s\S]\*)/ works and does not have the comment-problem. But it is longer and more complicated to understand than /.*/.

Be careful with "/" and "\". Even on Windows the command should be in the form:

\i c:/1.sql

Just clear this folder: (only windows x64)

C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files

This works on firefox 3.6.x and IE:

    function copyToClipboardCrossbrowser(s) {           
        s = document.getElementById(s).value;               

        if( window.clipboardData && clipboardData.setData )
        {
            clipboardData.setData("Text", s);
        }           
        else
        {
            // You have to sign the code to enable this or allow the action in about:config by changing
            //user_pref("signed.applets.codebase_principal_support", true);
            netscape.security.PrivilegeManager.enablePrivilege('UniversalXPConnect');

            var clip = Components.classes["@mozilla.org/widget/clipboard;1"].createInstance(Components.interfaces.nsIClipboard);
            if (!clip) return;

            // create a transferable

            var trans = Components.classes["@mozilla.org/widget/transferable;1"].createInstance(Components.interfaces.nsITransferable);
            if (!trans) return;

            // specify the data we wish to handle. Plaintext in this case.
            trans.addDataFlavor('text/unicode');

            // To get the data from the transferable we need two new objects
            var str = new Object();
            var len = new Object();

            var str = Components.classes["@mozilla.org/supports-string;1"].createInstance(Components.interfaces.nsISupportsString);

            str.data= s;        

            trans.setTransferData("text/unicode",str, str.data.length * 2);

            var clipid=Components.interfaces.nsIClipboard;              
            if (!clip) return false;
            clip.setData(trans,null,clipid.kGlobalClipboard);      
        }
    }

If you are using Java for OpenCV, then you can use the following code.

Mat img = src.clone(); //Clone from the original image
img.setTo(new Scalar(255,255,255)); //This sets the whole image to white, it is R,G,B value

This worked for me

import matplotlib.pyplot as plt
import seaborn as sns
.
.
.
plt.show(sns)

You defined Base64? If you not defined, occurs this error:

ReferenceError: Base64 is not defined

For all databases query sys.sysprocesses

SELECT * FROM sys.sysprocesses WHERE open_tran = 1

For the current database use:

DBCC OPENTRAN

ls -Art | tail -n 1

Not very elegant, but it works.

If you have custom image selector for checkbox or radiobutton you must set same button and background property such as this:

            <CheckBox
                android:id="@+id/filter_checkbox_text"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:button="@drawable/selector_checkbox_filter"
                android:background="@drawable/selector_checkbox_filter" />

You can control size of checkbox or radio button padding with background property.

Need to include jquery-ui too:

<script src="//code.jquery.com/ui/1.11.4/jquery-ui.js"></script>

If its not too late to add most of the options in one answer:

There are a couple of options:

1. set it in the pgpass file. link

2. set an environment variable and get it from there:

   export PGPASSWORD='password'

and then run your psql to login or even run the command from there:

 psql -h clustername -U username -d testdb

3. On windows you will have to use "set" :

   set PGPASSWORD=pass and then login to the psql bash.

A really dumb answer (I'll vote myself down in a minute), but this worked for me:

After adding your pipe, if you're still getting the errors and are running your Angular site using "ng serve", stop it... then start it up again.

For me, none of the other suggestions worked, but simply stopping, then restarting "ng serve" was enough to make the error go away.

Strange.

Since Hibernate ORM 5.2.10, you can do it likee this:

Object unproxiedEntity = Hibernate.unproxy(proxy);

Before Hibernate 5.2.10. the simplest way to do that was to use the unproxy method offered by Hibernate internal PersistenceContext implementation:

Object unproxiedEntity = ((SessionImplementor) session)
                         .getPersistenceContext()
                         .unproxy(proxy);

There are free, easy APIs you can use, like those:

• http://ipinfodb.com/ip_location_api.php
• http://www.ipgeo.com/api/
• http://ip2.cc/
• http://www.geobytes.com/IpLocator.htm
• https://iplocate.io/
• and plenty others.

Which one looks the most trustworthy is up to you :)

Otherwise, there are scripts which are based on local databases on your server. The database data needs to be updated regularly, though. Check out this one:

• http://phpweby.com/software/ip2country

HTH!

Edit: And of course, depending on your project you might want to look at HTML5 Location features. You can't use them yet on the Internet Explorer (IE9 will support it, long way to go yet), but in case your audience is mainly on mobile devices or using Safari/Firefox it's definitely worth to look at it!

Once you have the coordinates, you can reverse geocode them to a country code. Again there are APIs like this one:

• Example: http://ws.geonames.org/countryCode?lat=47.03&lng=10.2
• More APIs: http://www.geonames.org/export/ws-overview.html

Update, April 2013
Today I would recommend using Geocoder, a PHP library which makes it very easy to geocode ip addresses as well as postal address data.

***Update, September 2016
Since Google's privacy politics has changed, you can't use HTML5 Geolocation API if your server doesn't have HTPPS certificate or user doesn't allow you check his location. So now you can use user's IP and check in in PHP or get HTTPS certificate.

If you use Eclipse Collections you can use the collectIf() method.

MutableList<Integer> source =
    Lists.mutable.with(1, null, 2, null, 3, null, 4, null, 5);

MutableList<String> result = source.collectIf(Objects::nonNull, String::valueOf);

Assert.assertEquals(Lists.immutable.with("1", "2", "3", "4", "5"), result);

It evaluates eagerly and should be a bit faster than using a Stream.

Note: I am a committer for Eclipse Collections.

It's new features since the version 3.3.0 http://www.rabbitmq.com/release-notes/README-3.3.0.txt

server
------

...
25603 prevent access using the default guest/guest credentials except via
      localhost.

If you want enable the guest user read this or this RabbitMQ 3.3.1 can not login with guest/guest

# remove guest from loopback_users in rabbitmq.config like this
[{rabbit, [{loopback_users, []}]}].
# It is danger for default user and default password for remote access
# better to change password 
rabbitmqctl  change_password guest NEWPASSWORD

If you want create a new user with admin grants:

rabbitmqctl add_user test test
rabbitmqctl set_user_tags test administrator
rabbitmqctl set_permissions -p / test ".*" ".*" ".*"

Now you can access using test test.

To align one flex child to the right set it withmargin-left: auto;

From the flex spec:

One use of auto margins in the main axis is to separate flex items into distinct "groups". The following example shows how to use this to reproduce a common UI pattern - a single bar of actions with some aligned on the left and others aligned on the right.

.wrap div:last-child {
  margin-left: auto;
}

Updated fiddle

.wrap {_x000D_
  display: flex;_x000D_
  background: #ccc;_x000D_
  width: 100%;_x000D_
  justify-content: space-between;_x000D_
}_x000D_
.wrap div:last-child {_x000D_
  margin-left: auto;_x000D_
}_x000D_
.result {_x000D_
  background: #ccc;_x000D_
  margin-top: 20px;_x000D_
}_x000D_
.result:after {_x000D_
  content: '';_x000D_
  display: table;_x000D_
  clear: both;_x000D_
}_x000D_
.result div {_x000D_
  float: left;_x000D_
}_x000D_
.result div:last-child {_x000D_
  float: right;_x000D_
}

<div class="wrap">_x000D_
  <div>One</div>_x000D_
  <div>Two</div>_x000D_
  <div>Three</div>_x000D_
</div>_x000D_
_x000D_
<!-- DESIRED RESULT -->_x000D_
<div class="result">_x000D_
  <div>One</div>_x000D_
  <div>Two</div>_x000D_
  <div>Three</div>_x000D_
</div>

Note:

You could achieve a similar effect by setting flex-grow:1 on the middle flex item (or shorthand flex:1) which would push the last item all the way to the right. (Demo)

The obvious difference however is that the middle item becomes bigger than it may need to be. Add a border to the flex items to see the difference.

Demo

.wrap {_x000D_
  display: flex;_x000D_
  background: #ccc;_x000D_
  width: 100%;_x000D_
  justify-content: space-between;_x000D_
}_x000D_
.wrap div {_x000D_
  border: 3px solid tomato;_x000D_
}_x000D_
.margin div:last-child {_x000D_
  margin-left: auto;_x000D_
}_x000D_
.grow div:nth-child(2) {_x000D_
  flex: 1;_x000D_
}_x000D_
.result {_x000D_
  background: #ccc;_x000D_
  margin-top: 20px;_x000D_
}_x000D_
.result:after {_x000D_
  content: '';_x000D_
  display: table;_x000D_
  clear: both;_x000D_
}_x000D_
.result div {_x000D_
  float: left;_x000D_
}_x000D_
.result div:last-child {_x000D_
  float: right;_x000D_
}

<div class="wrap margin">_x000D_
  <div>One</div>_x000D_
  <div>Two</div>_x000D_
  <div>Three</div>_x000D_
</div>_x000D_
_x000D_
<div class="wrap grow">_x000D_
  <div>One</div>_x000D_
  <div>Two</div>_x000D_
  <div>Three</div>_x000D_
</div>_x000D_
_x000D_
<!-- DESIRED RESULT -->_x000D_
<div class="result">_x000D_
  <div>One</div>_x000D_
  <div>Two</div>_x000D_
  <div>Three</div>_x000D_
</div>

Just put the CSS outside the PHP Tag. Here:

<html>
<head>
    <title>Title</title>
    <style type="text/css">
    table {
        margin: 8px;
    }
    </style>
</head>
<body>
    <table>
    <tr><th>ID</th><th>hashtag</th></tr>
    <?php
    while($row = mysql_fetch_row($result))
    {
        echo "<tr onmouseover=\"hilite(this)\" onmouseout=\"lowlite(this)\"><td>$row[0]</td>                <td>$row[1]</td></tr>\n";
    }
    ?>
    </table>
</body>
</html>

Take note that the PHP tags are <?php and ?>.

is it possible to export without looping through all records

For a range in Excel with a large number of rows you may see some performance improvement if you create an Access.Application object in Excel and then use it to import the Excel data into Access. The code below is in a VBA module in the same Excel document that contains the following test data

Option Explicit

Sub AccImport()
    Dim acc As New Access.Application
    acc.OpenCurrentDatabase "C:\Users\Public\Database1.accdb"
    acc.DoCmd.TransferSpreadsheet _
            TransferType:=acImport, _
            SpreadSheetType:=acSpreadsheetTypeExcel12Xml, _
            TableName:="tblExcelImport", _
            Filename:=Application.ActiveWorkbook.FullName, _
            HasFieldNames:=True, _
            Range:="Folio_Data_original$A1:B10"
    acc.CloseCurrentDatabase
    acc.Quit
    Set acc = Nothing
End Sub

Beside Gambol's answer that will do the job in nearly all cases, all answers given so far missed that the grouped formatting (8-4-4-4-12) is not mandatory to encode GUIDs in text. It's used extremely often but obviously also a plain chain of 32 hexadecimal digits can be valid.^[1] regex_enh:

/^[0-9a-f]{8}-?[0-9a-f]{4}-?[1-5][0-9a-f]{3}-?[89ab][0-9a-f]{3}-?[0-9a-f]{12}$/i

^[1] The question is about checking variables, so we should include the user-unfriendly form as well.

• Why are there dashes in a .NET GUID? - Stack Overflow plus Accepted answer
• Test and validate a GUID (guid.us)
• Guid.ToString Method (String) (MSDN)

All answers are quite old. Since the beginning of 2013 Mongoose started to support promises gradually for all queries, so that would be the recommended way of structuring several async calls in the required order going forward I guess.

It depends on what you're looking for, if you need System.Windows.Media.Color (like in WPF) it's very easy:

System.Windows.Media.Color color = (Color)System.Windows.Media.ColorConverter.ConvertFromString("Red");//or hexadecimal color, e.g. #131A84

At my work we have our restful services on a different port number and the data resides in db2 on a pair of AS400s. We typically use the $.getJSON AJAX method because it easily returns JSONP using the ?callback=? without having any issues with CORS.

data ='USER=<?echo trim($USER)?>' +
         '&QRYTYPE=' + $("input[name=QRYTYPE]:checked").val();

        //Call the REST program/method returns: JSONP 
        $.getJSON( "http://www.stackoverflow.com/rest/resttest?callback=?",data)
        .done(function( json ) {        

              //  loading...
                if ($.trim(json.ERROR) != '') {
                    $("#error-msg").text(message).show();
                }
                else{
                    $(".error").hide();
                    $("#jsonp").text(json.whatever);

                }

        })  
        .fail(function( jqXHR, textStatus, error ) {
        var err = textStatus + ", " + error;
        alert('Unable to Connect to Server.\n Try again Later.\n Request Failed: ' + err);
        });     

One advantage your current approach does have is that it will raise an error if multiple rows are returned by the predicate. To reproduce that you can use.

SELECT @currentTerm = currentterm,
       @termID = termid,
       @endDate = enddate
FROM   table1
WHERE  iscurrent = 1

IF( @@ROWCOUNT <> 1 )
  BEGIN
      RAISERROR ('Unexpected number of matching rows',
                 16,
                 1)

      RETURN
  END  

Try this function...

function calculate_age(birth_month,birth_day,birth_year)
{
    today_date = new Date();
    today_year = today_date.getFullYear();
    today_month = today_date.getMonth();
    today_day = today_date.getDate();
    age = today_year - birth_year;

    if ( today_month < (birth_month - 1))
    {
        age--;
    }
    if (((birth_month - 1) == today_month) && (today_day < birth_day))
    {
        age--;
    }
    return age;
}

OR

function getAge(dateString) 
{
    var today = new Date();
    var birthDate = new Date(dateString);
    var age = today.getFullYear() - birthDate.getFullYear();
    var m = today.getMonth() - birthDate.getMonth();
    if (m < 0 || (m === 0 && today.getDate() < birthDate.getDate())) 
    {
        age--;
    }
    return age;
}

See Demo.

You can achieve with following way

    this.projectService.create(project)
    .subscribe(
        result => {
         console.log(result);
        },
        error => {
            console.log(error);
            this.errors = error
        }
    ); 
}

if (!this.errors) {
    //route to new page
}

I spent a lot of time trying all of the above, and nothing seemed to solve. Then I resorted the reinstalling ruby, and 2 minutes later the problem entirely vanished.

I hope this saves something else some time.

As I commented, there are a few places on this site that write the contents of a worksheet out to a CSV. This one and this one to point out just two.

Below is my version

• it explicitly looks out for "," inside a cell
• It also uses UsedRange - because you want to get all of the contents in the worksheet
• Uses an array for looping as this is faster than looping through worksheet cells
• I did not use FSO routines, but this is an option

The code ...

Sub makeCSV(theSheet As Worksheet)
Dim iFile As Long, myPath As String
Dim myArr() As Variant, outStr As String
Dim iLoop As Long, jLoop As Long

myPath = Application.ActiveWorkbook.Path
iFile = FreeFile
Open myPath & "\myCSV.csv" For Output Lock Write As #iFile

myArr = theSheet.UsedRange
For iLoop = LBound(myArr, 1) To UBound(myArr, 1)
    outStr = ""
    For jLoop = LBound(myArr, 2) To UBound(myArr, 2) - 1
        If InStr(1, myArr(iLoop, jLoop), ",") Then
            outStr = outStr & """" & myArr(iLoop, jLoop) & """" & ","
        Else
            outStr = outStr & myArr(iLoop, jLoop) & ","
        End If
    Next jLoop
    If InStr(1, myArr(iLoop, jLoop), ",") Then
        outStr = outStr & """" & myArr(iLoop, UBound(myArr, 2)) & """"
    Else
        outStr = outStr & myArr(iLoop, UBound(myArr, 2))
    End If
    Print #iFile, outStr
Next iLoop

Close iFile
Erase myArr

End Sub

DateFormat df = new SimpleDateFormat("HH:mm:ss");
String formatted = df.format(aDateObject);

Using split() will be the most Pythonic way of splitting on a string.

It's also useful to remember that if you use split() on a string that does not have a whitespace then that string will be returned to you in a list.

Example:

>>> "ark".split()
['ark']

Working Code:

package com.example.keralapolice;

import android.app.Fragment;
import android.app.FragmentManager;
import android.app.FragmentManager.OnBackStackChangedListener;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;

public class ChiefFragment extends Fragment {
    View view;

    // public OnBackPressedListener onBackPressedListener;

    @Override
    public View onCreateView(LayoutInflater inflater,
            ViewGroup container, Bundle args) {

        view = inflater.inflate(R.layout.activity_chief, container, false);
        getActivity().getActionBar().hide();
        view.setFocusableInTouchMode(true);
        view.requestFocus();
        view.setOnKeyListener(new View.OnKeyListener() {
            @Override
            public boolean onKey(View v, int keyCode, KeyEvent event) {
                Log.i(getTag(), "keyCode: " + keyCode);
                if (keyCode == KeyEvent.KEYCODE_BACK) {
                    getActivity().getActionBar().show();
                    Log.i(getTag(), "onKey Back listener is working!!!");
                    getFragmentManager().popBackStack(null, FragmentManager.POP_BACK_STACK_INCLUSIVE);
                    // String cameback="CameBack";
                    Intent i = new Intent(getActivity(), home.class);
                    // i.putExtra("Comingback", cameback);
                    startActivity(i);
                    return true;
                } else {
                    return false;
                }
            }
        });
        return view;
    }
}

You may want to consider placing the customer's name in the From header and your address in the Sender header:

From: Company A <[email protected]>
Sender: [email protected]

Most mailers will render this as "From [email protected] on behalf of Company A", which is accurate. And then a Reply-To of Company A's address won't seem out of sorts.

From RFC 5322:

The "From:" field specifies the author(s) of the message, that is, the mailbox(es) of the person(s) or system(s) responsible for the writing of the message. The "Sender:" field specifies the mailbox of the agent responsible for the actual transmission of the message. For example, if a secretary were to send a message for another person, the mailbox of the secretary would appear in the "Sender:" field and the mailbox of the actual author would appear in the "From:" field.

My problem with this one was that I was creating a hibernate session, but had the JNDI settings for my database instance wrong because of a classpath problem. Just FYI...

You need xlutils.copy. Try something like this:

from xlutils.copy import copy
w = copy('book1.xls')
w.get_sheet(0).write(0,0,"foo")
w.save('book2.xls')

Keep in mind you can't overwrite cells by default as noted in this question.

Atomic collections are accessible by $

Recursive collections are not. Rather the [[ ]] is used

 Browse[1]> is.atomic(list())
 [1] FALSE

 Browse[1]> is.atomic(data.frame())
 [1] FALSE

 Browse[1]> is.atomic(class(list(foo="bar")))
 [1] TRUE

 Browse[1]> is.atomic(c(" lang "))
 [1] TRUE

R can be funny sometimes

 a = list(1,2,3)
 b = data.frame(a)
 d = rbind("?",c(b))
 e = exp(1)
 f = list(d)
 print(data.frame(c(list(f,e))))

   X1 X2 X3 X2.71828182845905
 1  ?  ?  ?          2.718282
 2  1  2  3          2.718282

This is not due to input tags not having any content per-se, but that their content is outside the scope of CSS.

input elements are a special type called replaced elements, these do not support :pseudo selectors like :before and :after.

In CSS, a replaced element is an element whose representation is outside the scope of CSS. These are kind of external objects whose representation is independent of the CSS. Typical replaced elements are <img>, <object>, <video> or form elements like <textarea> and <input>. Some elements, like <audio> or <canvas> are replaced elements only in specific cases. Objects inserted using the CSS content properties are anonymous replaced elements.

Note that this is even referred to in the spec:

This specification does not fully define the interaction of :before and :after with replaced elements (such as IMG in HTML).

And more explicitly:

Replaced elements do not have ::before and ::after pseudo-elements

If you use Google Guava (and if you don't, you should), you can call: ByteStreams.toByteArray(InputStream) or Files.toByteArray(File)

int is a binary representation of a whole number, double is a double-precision floating point number.

Answer below the dotted line below is the original that's now outdated.

Here is the latest information ( Thank you @deadfish ):

add &hl=<language> like &hl=pl or &hl=en

example: https://play.google.com/store/apps/details?id=com.example.xxx&hl=en or https://play.google.com/store/apps/details?id=com.example.xxx&hl=pl

All available languages and abbreviations can be looked up here: https://support.google.com/googleplay/android-developer/table/4419860?hl=en

......................................................................

To change the actual local market:

Basically the market is determined automatically based on your IP. You can change some local country settings from your Gmail account settings but still IP of the country you're browsing from is more important. To go around it you'd have to Proxy-cheat. Check out some ways/sites: http://www.affilorama.com/forum/market-research/how-to-change-country-search-settings-in-google-t4160.html

To do it from an Android phone you'd need to find an app. I don't have my Droid anymore but give this a try: http://forum.xda-developers.com/showthread.php?t=694720

Here's your script...

DIR=$(pwd)
echo $DIR
while [ "$DIR" != "/" ]; do
    cd ..
    DIR=$(pwd)
    echo $DIR
done

Note the spaces, use of quotes, and $ signs.

I've noticed that if you set the theme in the AndroidManifest, it seems to get rid of that short time where you can see the action bar. So, try adding this to your manifest:

<android:theme="@android:style/Theme.NoTitleBar">

Just add it to your application tag to apply it app-wide.

Aggregation and composition are terms that most people in the OO world have acquired via UML. And UML does a very poor job at defining these terms, as has been demonstrated by, for example, Henderson-Sellers and Barbier ("What is This Thing Called Aggregation?", "Formalization of the Whole-Part Relationship in the Unified Modeling Language"). I don't think that a coherent definition of aggregation and composition can be given if you are interested in being UML-compliant. I suggest you look at the cited works.

Regarding dependency, that's a highly abstract relationship between types (not objects) that can mean almost anything.

In our case, we struggled with this error for quite some days. It turns out that in control panel, programs, turn windows features on or off.

We selected Internet Information Services, world wide web services, Application development features and there we check the set of features associated with our development environment. For example: ASP.NET 4.6. .NET Extensibility 4.6, etc.

It works!

For List<List<List<x>>> and so on, use

list.SelectMany(x => x.SelectMany(y => y)).ToList();

This has been posted in a comment, but it does deserves a separate reply in my opinion.

I just encounter a similar case with this one, but the solution here seems not helping me. So I try to figure it out by myself. I work out the week start date only, week end date should be of similar logic.

Select 
      Sum(NumberOfBrides) As [Wedding Count], 
      DATEPART( wk, WeddingDate) as [Week Number],
      DATEPART( year, WeddingDate) as [Year],
      DATEADD(DAY, 1 - DATEPART(WEEKDAY, dateadd(wk, DATEPART( wk, WeddingDate)-1,  DATEADD(yy,DATEPART( year, WeddingDate)-1900,0))), dateadd(wk, DATEPART( wk, WeddingDate)-1, DATEADD(yy,DATEPART( year, WeddingDate)-1900,0))) as [Week Start]

FROM  MemberWeddingDates
Group By DATEPART( year, WeddingDate), DATEPART( wk, WeddingDate)
Order By Sum(NumberOfBrides) Desc

Use namespace

using System.Collections.Specialized;

Make instance of DataContext Class

LinqToSqlDataContext dc = new LinqToSqlDataContext();

Use

OrderedDictionary dict = dc.TableName.ToDictionary(d => d.key, d => d.value);

In order to retrieve the values use namespace

   using System.Collections;

ICollection keyCollections = dict.Keys;
ICOllection valueCollections = dict.Values;

String[] myKeys = new String[dict.Count];
String[] myValues = new String[dict.Count];

keyCollections.CopyTo(myKeys,0);
valueCollections.CopyTo(myValues,0);

for(int i=0; i<dict.Count; i++)
{
Console.WriteLine("Key: " + myKeys[i] + "Value: " + myValues[i]);
}
Console.ReadKey();

Sameer:

float l = new Float(x/y)

will not work, as it will compute integer division of x and y first, then construct a float from it.

float result = (float) x / (float) y;

Is semantically the best candidate.

document.getElementsByClassName('CLASSNAME')[0].style.display = 'none';

Acyually by using getElementsByClassName, it returns an array of multiple classes. Because same class name could be used in more than one instance inside same HTML page. We use array element id to target the class we need, in my case, it's first instance of the given class name.So I've used [0]

or use display property with table-cell;

css

.table-layout {
    display:table;
    width:100%;
}
.table-layout .table-cell {
    display:table-cell;
    border:solid 1px #ccc;
}

.fixed-width-200 {
    width:200px;
}

html

<div class="table-layout">
    <div class="table-cell fixed-width-200">
        <p>fixed width div</p>
    </div>
    <div class="table-cell">
        <p>fluid width div</p>    
    </div>
</div>

http://jsfiddle.net/DnGDz/

If you are using an http proxy server, revise the following proxy settings in "gradle.properties" file in your project's root folder. If not using proxy server, just delete those entries.

systemProp.http.proxyPort=8080
systemProp.http.proxyUser=UserName
systemProp.http.proxyPassword=Passw0rd
systemProp.https.proxyPassword=Passw0rd
systemProp.https.proxyHost=proxy.abc.com
systemProp.http.proxyHost=proxy.abc.com
systemProp.https.proxyPort=8080
systemProp.https.proxyUser=UserName

A new answer to reflect the most current practices: as of version 1.0.1, neither astype('str') nor astype(str) work.

As per the documentation, a Series can be converted to the string datatype in the following ways:

df['id'] = df['id'].astype("string")

df['id'] = pandas.Series(df['id'], dtype="string")

df['id'] = pandas.Series(df['id'], dtype=pandas.StringDtype)

The error message tells the exact reason: "abstract methods cannot have a body".

They can only be defined in abstract classes and interfaces (interface methods are implicitly abstract!) and the idea is, that the subclass implements the method.

Example:

 public abstract class AbstractGreeter {
   public abstract String getHelloMessage();

   public void sayHello() {
     System.out.println(getHelloMessage());
   }
 }

 public class FrenchGreeter extends AbstractGreeter{

   // we must implement the abstract method
   @Override
   public String getHelloMessage() {
     return "bonjour";
   }
 }

^ for start of the string pattern,

? for allowing 0 or 1 time repeat. ie., s? s can exist 1 time or no need to exist at all.

/ is a special character in regex so it needs to be escaped by a backslash \/

/^https?:\/\//.test('https://www.bbc.co.uk/sport/cricket'); // true

/^https?:\/\//.test('http://www.bbc.co.uk/sport/cricket'); // true

/^https?:\/\//.test('ftp://www.bbc.co.uk/sport/cricket'); // false

Using foreach would be shorter code, but probably do exactly the same steps at runtime after JIT optimization recognizes the comparison to Length in the for-loop controlling expression.

yum install php-mbstring (as per http://php.net/manual/en/mbstring.installation.php)

I think you have to install the EPEL repository http://fedoraproject.org/wiki/EPEL

Instructions here are a little complicated so I'm going to offer something more straightforward:

1. git reset HEAD --hard Abandon all changes to the current branch

2. ... Perform intermediary work as necessary

3. git stash pop Re-pop the stash again at a later date when you're ready

function change() {
 myButton1.value=="Open Curtain" ? myButton1.value="Close Curtain" : myButton1.value="Open Curtain";
}

From my experience I'm telling you that BIT has problems on linux OS types(Ubuntu for ex). I developped my db on windows and after I deployed everything on linux, I had problems with queries that inserted or selected from tables that had BIT DATA TYPE.

Bit is not safe for now. I changed to tinyint(1) and worked perfectly. I mean that you only need a value to diferentiate if it's 1 or 0 and tinyint(1) it's ok for that

It only seems to because that is what it is printing out. But actually, you shouldn't write the logic this way. This is equivalent:

insert into errortable (dateupdated, table1id)
    values (sysdate, 1083);

It seems silly to convert the system date to a string just to convert it back to a date.

If you want to see the full date, then you can do:

select TO_CHAR(dateupdated, 'YYYY-MM-DD HH24:MI:SS'), table1id
from errortable;

But can I abort a Task (in .Net 4.0) in the same way not by cancellation mechanism. I want to kill the Task immediately.

Other answerers have told you not to do it. But yes, you can do it. You can supply Thread.Abort() as the delegate to be called by the Task's cancellation mechanism. Here is how you could configure this:

class HardAborter
{
  public bool WasAborted { get; private set; }
  private CancellationTokenSource Canceller { get; set; }
  private Task<object> Worker { get; set; }

  public void Start(Func<object> DoFunc)
  {
    WasAborted = false;

    // start a task with a means to do a hard abort (unsafe!)
    Canceller = new CancellationTokenSource();

    Worker = Task.Factory.StartNew(() => 
      {
        try
        {
          // specify this thread's Abort() as the cancel delegate
          using (Canceller.Token.Register(Thread.CurrentThread.Abort))
          {
            return DoFunc();
          }
        }
        catch (ThreadAbortException)
        {
          WasAborted = true;
          return false;
        }
      }, Canceller.Token);
  }

  public void Abort()
  {
    Canceller.Cancel();
  }

}

disclaimer: don't do this.

Here is an example of what not to do:

 var doNotDoThis = new HardAborter();

 // start a thread writing to the console
 doNotDoThis.Start(() =>
    {
       while (true)
       {
          Thread.Sleep(100);
          Console.Write(".");
       }
       return null;
    });


 // wait a second to see some output and show the WasAborted value as false
 Thread.Sleep(1000);
 Console.WriteLine("WasAborted: " + doNotDoThis.WasAborted);

 // wait another second, abort, and print the time
 Thread.Sleep(1000);
 doNotDoThis.Abort();
 Console.WriteLine("Abort triggered at " + DateTime.Now);

 // wait until the abort finishes and print the time
 while (!doNotDoThis.WasAborted) { Thread.CurrentThread.Join(0); }
 Console.WriteLine("WasAborted: " + doNotDoThis.WasAborted + " at " + DateTime.Now);

 Console.ReadKey();

@Jason. You are correct except that php is the culprit and not mysql. If you put your JOIN in Mysql Workbench you will get three columns with the exact same name (one for each table) but not with the same data (some will be null if that table has no match for the JOIN).

In php if you use MYSQL_NUM in mysql_fetch_array() then you will get all columns. The problem is when you use mysql_fetch_array() with MYSQL_ASSOC. Then, inside that function, php is building the return value like so:

$row['dup'] = [value from table1]

and later on...

$row['dup'] = [value from table2]

...

$row['dup'] = [value from table3]

So you will get only the value from table3. The problem is that a result set from mysql can contain columns with the same name but associative arrays in php don't allow duplicate keys in arrays. When the data is saved in associative arrays, in php, some information is silently lost...

this works for me (the width is forced by javascript and FB plugin loaded via javascript)

<div id="fb-root"></div>
<script>(function(d, s, id) {
  var js, fjs = d.getElementsByTagName(s)[0];
  if (d.getElementById(id)) return;
  js = d.createElement(s); js.id = id;
  js.src = "//connect.facebook.net/en_US/sdk.js#xfbml=1&version=v2.5&appId=443271375714375";
  fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));

jQuery(document).ready(function($) {
  $(window).bind("load resize", function(){  
  setTimeout(function() {
  var container_width = $('#container').width();    
    $('#container').html('<div class="fb-page" ' + 
    'data-href="http://www.facebook.com/IniciativaAutoMat"' +
    ' data-width="' + container_width + '" data-tabs="timeline" data-small-header="true" data-adapt-container-width="true" data-hide-cover="false" data-show-facepile="true"><div class="fb-xfbml-parse-ignore"><blockquote cite="http://www.facebook.com/IniciativaAutoMat"><a href="http://www.facebook.com/IniciativaAutoMat">Auto*Mat</a></blockquote></div></div>');
    FB.XFBML.parse( );    
  }, 100);  
}); 
});

</script>
<div id="container" style="width:100%;">  
<div class="fb-page" data-href="http://www.facebook.com/IniciativaAutoMat" data-tabs="timeline" data-small-header="true" data-adapt-container-width="true" data-hide-cover="false" data-show-facepile="true"><div class="fb-xfbml-parse-ignore"><blockquote cite="http://www.facebook.com/IniciativaAutoMat"><a href="http://www.facebook.com/IniciativaAutoMat">Auto*Mat</a></blockquote></div></div>
</div>

If you have an association on a property pointing to the user (let's say Credit\Entity\UserCreditHistory#user, picked from your example), then the syntax is quite simple:

public function getHistory($users) {
    $qb = $this->entityManager->createQueryBuilder();
    $qb
        ->select('a', 'u')
        ->from('Credit\Entity\UserCreditHistory', 'a')
        ->leftJoin('a.user', 'u')
        ->where('u = :user')
        ->setParameter('user', $users)
        ->orderBy('a.created_at', 'DESC');

    return $qb->getQuery()->getResult();
}

Since you are applying a condition on the joined result here, using a LEFT JOIN or simply JOIN is the same.

If no association is available, then the query looks like following

public function getHistory($users) {
    $qb = $this->entityManager->createQueryBuilder();
    $qb
        ->select('a', 'u')
        ->from('Credit\Entity\UserCreditHistory', 'a')
        ->leftJoin(
            'User\Entity\User',
            'u',
            \Doctrine\ORM\Query\Expr\Join::WITH,
            'a.user = u.id'
        )
        ->where('u = :user')
        ->setParameter('user', $users)
        ->orderBy('a.created_at', 'DESC');

    return $qb->getQuery()->getResult();
}

This will produce a resultset that looks like following:

array(
    array(
        0 => UserCreditHistory instance,
        1 => Userinstance,
    ),
    array(
        0 => UserCreditHistory instance,
        1 => Userinstance,
    ),
    // ...
)

win32gui.GetCursorPos(point)

This retrieves the cursor's position, in screen coordinates - point = (x,y)

flags, hcursor, (x,y) = win32gui.GetCursorInfo()

Retrieves information about the global cursor.

Links:

• http://msdn.microsoft.com/en-us/library/ms648389(VS.85).aspx
• http://msdn.microsoft.com/en-us/library/ms648390(VS.85).aspx

I am assuming that you would be using python win32 API bindings or pywin32.

204:

No Content.” This code means that the server has successfully processed the request, but is not going to return any content

https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/204

Try the Date function. It will give you today's date in a MM/DD/YYYY format. If you're looking for today's date in the MM-DD-YYYY format try Date$. Now() also includes the current time (which you might not need). It all depends on what you need. :)

I'm using bootstrap.
I used css parameters.

.table {
  table-layout:fixed;
}

.table td {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

and bootstrap grid system parameters, like this.

<th class="col-sm-2">Name</th>

<td class="col-sm-2">hoge</td>

A one-line bash script would be easy to do - replace *.avi with your filetype:

for i in *.avi; do ffmpeg -i "$i" -qscale 0 "$(basename "$i" .avi)".mov  ; done

git rm --cached file

should do what you want.

You can read more details at git help rm

DELETE is for deleting the request resource:

The DELETE method requests that the origin server delete the resource identified by the Request-URI. This method MAY be overridden by human intervention (or other means) on the origin server. The client cannot be guaranteed that the operation has been carried out, even if the status code returned from the origin server indicates that the action has been completed successfully …

PUT is for putting or updating a resource on the server:

The PUT method requests that the enclosed entity be stored under the supplied Request-URI. If the Request-URI refers to an already existing resource, the enclosed entity SHOULD be considered as a modified version of the one residing on the origin server. If the Request-URI does not point to an existing resource, and that URI is capable of being defined as a new resource by the requesting user agent, the origin server can create the resource with that URI …

For the full specification visit:

• http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html

Since current browsers unfortunately do not support any other verbs than POST and GET in HTML forms, you usually cannot utilize HTTP to it's full extent with them (you can still hijack their submission via JavaScript though). The absence of support for these methods in HTML forms led to URIs containing verbs, like for instance

POST http://example.com/order/1/delete

or even worse

POST http://example.com/deleteOrder/id/1

effectively tunneling CRUD semantics over HTTP. But verbs were never meant to be part of the URI. Instead HTTP already provides the mechanism and semantics to CRUD a Resource (e.g. an order) through the HTTP methods. HTTP is a protocol and not just some data tunneling service.

So to delete a Resource on the webserver, you'd call

DELETE http://example.com/order/1

and to update it you'd call

PUT http://example.com/order/1

and provide the updated Resource Representation in the PUT body for the webserver to apply then.

So, if you are building some sort of client for a REST API, you will likely make it send PUT and DELETE requests. This could be a client built inside a browser, e.g. sending requests via JavaScript or it could be some tool running on a server, etc.

For some more details visit:

• http://martinfowler.com/articles/richardsonMaturityModel.html
• Are the PUT, DELETE, HEAD, etc methods available in most web browsers?
• Why are there no PUT and DELETE methods in HTML forms
• Should PUT and DELETE be used in forms?
• http://amundsen.com/examples/put-delete-forms/
• http://www.quora.com/HTTP/Why-are-PUT-and-DELETE-no-longer-supported-in-HTML5-forms

The best solution is my method:

In my method, only full words are detected,But in other ways it is not.

for example:

$text='hello world!'; 

if(strpos($text, 'wor') === FALSE) { 
   echo '"wor" not found in string'; 
}

Result: strpos returned true!!! but in my method return false.

My method:

public function searchInLine($txt,$word){

    $txt=strtolower($txt);
    $word=strtolower($word);
    $word_length=strlen($word);
    $string_length=strlen($txt);
    if(strpos($txt,$word)!==false){
        $indx=strpos($txt,$word);
        $last_word=$indx+$word_length;
        if($indx==0){
            if(strpos($txt,$word." ")!==false){
                return true;
            }
            if(strpos($txt,$word.".")!==false){
                return true;
            }
            if(strpos($txt,$word.",")!==false){
                return true;
            }
            if(strpos($txt,$word."?")!==false){
                return true;
            }
            if(strpos($txt,$word."!")!==false){
                return true;
            }
        }else if($last_word==$string_length){
            if(strpos($txt," ".$word)!==false){
                return true;
            }
            if(strpos($txt,".".$word)!==false){
                return true;
            }
            if(strpos($txt,",".$word)!==false){
                return true;
            }
            if(strpos($txt,"?".$word)!==false){
                return true;
            }
            if(strpos($txt,"!".$word)!==false){
                return true;
            }

        }else{
            if(strpos($txt," ".$word." ")!==false){
                return true;
            }
            if(strpos($txt," ".$word.".")!==false){
                return true;
            }
            if(strpos($txt," ".$word.",")!==false){
                return true;
            }
            if(strpos($txt," ".$word."!")!==false){
                return true;
            }
            if(strpos($txt," ".$word."?")!==false){
                return true;
            }
        }
        }

    return false;
}

If it's a value you'd like to have for every request & template, using a context processor is more appropriate.

Here's how:

1. Make a context_processors.py file in your app directory. Let's say I want to have the ADMIN_PREFIX_VALUE value in every context:

   from django.conf import settings # import the settings file
   
   def admin_media(request):
       # return the value you want as a dictionnary. you may add multiple values in there.
       return {'ADMIN_MEDIA_URL': settings.ADMIN_MEDIA_PREFIX}
   

2. add your context processor to your settings.py file:

   TEMPLATES = [{
       # whatever comes before
       'OPTIONS': {
           'context_processors': [
               # whatever comes before
               "your_app.context_processors.admin_media",
           ],
       }
   }]
   

3. Use RequestContext in your view to add your context processors in your template. The render shortcut does this automatically:

   from django.shortcuts import render
   
   def my_view(request):
       return render(request, "index.html")
   

4. and finally, in your template:

   ...
   <a href="{{ ADMIN_MEDIA_URL }}">path to admin media</a>
   ...
   

Use bootstrap's .form-group class. Like this in your case:

<div class="col-md-6 form-group"></div>
<div class="col-md-6 form-group"></div>

You should call the events after the document is ready, like this:

$(document).ready(function () {
  // Your code
});

This is because you are trying to manipulate elements before they are rendered by the browser.

So, in the case you posted it should look something like this

$(document).ready(function () {
  var editorTitle = $('#editorTitle').val();
  var editorText = $('#editorText').html();
});

Hope it helps.

Tips: always save your jQuery object in a variable for later use and only code that really need to run after the document have loaded should go inside the ready() function.

You can do it easily with ouzo goodies

$result = array_map(Functions::extract()->id, $arr);

or with Arrays (from ouzo goodies)

$result = Arrays::map($arr, Functions::extract()->id);

Check out: http://ouzo.readthedocs.org/en/latest/utils/functions.html#extract

See also functional programming with ouzo (I cannot post a link).

Here's a slightly shorter approach. Rather than work to create a high-precision numeric date/time, I convert the microsecond value to a string, remove the 0, and add it to the end of the date/time string. I can easily trim the number of decimals by adjusting the string length parameter; here I use 4 to get milliseconds, but you could use 7 to get microseconds.

$t = explode(" ",microtime());
echo date("m-d-y H:i:s",$t[1]).substr((string)$t[0],1,4);

For a microtime() value of 0.98236000 1407400573, this returns 08-07-14 01:08:13.982.

/*$mpdf = new mPDF('',    // mode - default ''
 '',    // format - A4, for example, default ''
 0,     // font size - default 0
 '',    // default font family
 15,    // margin_left
 15,    // margin right
 16,     // margin top
 16,    // margin bottom
 9,     // margin header
 9,     // margin footer
 'L');  // L - landscape, P - portrait*/

The graphicx package provides the command \resizebox{width}{height}{object}:

\documentclass{article}
\usepackage{graphicx}
\begin{document}
\hrule
%%%
\makeatletter%
\setlength{\@tempdima}{\the\columnwidth}% the, well columnwidth
\settowidth{\@tempdimb}{(\ref{Equ:TooLong})}% the width of the "(1)"
\addtolength{\@tempdima}{-\the\@tempdimb}% which cannot be used for the math
\addtolength{\@tempdima}{-1em}%
% There is probably some variable giving the required minimal distance
% between math and label, but because I do not know it I used 1em instead.
\addtolength{\@tempdima}{-1pt}% distance must be greater than "1em"
\xdef\Equ@width{\the\@tempdima}% space remaining for math
\begin{equation}%
\resizebox{\Equ@width}{!}{$\displaystyle{% to get everything inside "big"
 A+B+C+D+E+F+G+H+I+J+K+L+M+N+O+P+Q+R+S+T+U+V+W+X+Y+Z}$}%
\label{Equ:TooLong}%
\end{equation}%
\makeatother%
%%%
\hrule
\end{document}

Jan 2020 Update

@Flimm has explained all the differences very well. Generally, we want to know the difference between all tools because we want to decide what's best for us. So, the next question would be: which one to use? I suggest you choose one of the two official ways to manage virtual environments:

• Python Packaging now recommends Pipenv
• Python.org now recommends venv

Make sure you have package.json inside root of your project. Happy coding :)

In case you also want Schema:

SELECT CONCAT(ic.TABLE_SCHEMA, '.', st.name) as TableName
   ,st.create_date
   ,st.modify_date

FROM sys.tables st

JOIN INFORMATION_SCHEMA.COLUMNS ic ON ic.TABLE_NAME = st.name

GROUP BY ic.TABLE_SCHEMA, st.name, st.create_date, st.modify_date

ORDER BY st.create_date

A GridView is a ViewGroup that displays items in two-dimensional scrolling grid. The items in the grid come from the ListAdapter associated with this view.

This is what you'd want to use (keep using). Because a GridView gets its data from a ListAdapter, the only data loaded in memory will be the one displayed on screen. GridViews, much like ListViews reuse and recycle their views for better performance.

Whereas a GridLayout is a layout that places its children in a rectangular grid.

It was introduced in API level 14, and was recently backported in the Support Library. Its main purpose is to solve alignment and performance problems in other layouts. Check out this tutorial if you want to learn more about GridLayout.

div is a block element, which always takes up its own line.

use the span tag instead

I'm on a roll, just found an even simpler way to do it using the by keyword in the hist method:

df['N'].hist(by=df['Letter'])

That's a very handy little shortcut for quickly scanning your grouped data!

For future visitors, the product of this call is the following chart:

static - because Interface cannot have any instance. and final - because we do not need to change it.

$.ajax({
        url: 'http://url.of.my.server/submit',
        dataType: "jsonp",
        jsonp: 'callback',
        jsonpCallback: 'jsonp_callback'
    });

jsonp is the querystring parameter name that is defined to be acceptable by the server while the jsonpCallback is the javascript function name to be executed at the client.
When you use such url:

url: 'http://url.of.my.server/submit?callback=?'

the question mark ? at the end instructs jQuery to generate a random function while the predfined behavior of the autogenerated function will just invoke the callback -the sucess function in this case- passing the json data as a parameter.

$.ajax({
        url: 'http://url.of.my.server/submit?callback=?',
        success: function (data, status) {
            mySurvey.closePopup();
        },
        error: function (xOptions, textStatus) {
            mySurvey.closePopup();
        }
    });

The same goes here if you are using $.getJSON with ? placeholder it will generate a random function while the predfined behavior of the autogenerated function will just invoke the callback:

$.getJSON('http://url.of.my.server/submit?callback=?',function(data){
//process data here
});

I came here looking for the answer to this on OSX. I ended up getting what I wanted with bash and awk:

topfiltered() {
  [[ -z "$1" ]] && return
  dump="/tmp/top_dump"
  rm -f "$dump"
  while :; do
    clear
    [[ -s "$dump" ]] && head -n $(( $LINES - 1 )) "$dump"
    top -l 1 -o cpu -ncols $(( $COLUMNS / 8 )) | awk -v p="$(pgrep -d ' ' $@)" '
        BEGIN { split(p, arr); for (k in arr) pids[arr[k]]=1 }
        NR<=12 || ($1 in pids)
    ' >"$dump"
  done
}

I loop top in logging mode and filter it with awk, building an associative array from the output of pgrep. Awk prints the first 12 lines, where line 12 is the column headers, and then every line which has a pid that's a key in the array. The dump file is used for a more watchable loop.

By default browser always plays animated gifs, and you can't change that behaviour. If gif image does not animate there can be 2 ways to look: something wrong with the browser, something wrong with the image. Then to exclude the first variant just check trusted image in your browser (run snippet below, this gif definitely animated and works in all browsers).

Your code looks OK. Can you check if this snippet is animated for you?
If YES, then something is bad with your gif, if NO something is wrong with your browser.

<img src="http://i.stack.imgur.com/SBv4T.gif" alt="this slowpoke moves"  width=250/>

The tutorial @Henrik mentioned is an excellent resource for learning how to create plots with the ggplot2 package.

An example with your data:

# transforming the data from wide to long
library(reshape2)
dfm <- melt(df, id = "TY")

# creating a scatterplot
ggplot(data = dfm, aes(x = TY, y = value, color = variable)) + 
  geom_point(size=5) +
  labs(title = "Temperatures\n", x = "TY [°C]", y = "Txxx", color = "Legend Title\n") +
  scale_color_manual(labels = c("T999", "T888"), values = c("blue", "red")) +
  theme_bw() +
  theme(axis.text.x = element_text(size = 14), axis.title.x = element_text(size = 16),
        axis.text.y = element_text(size = 14), axis.title.y = element_text(size = 16),
        plot.title = element_text(size = 20, face = "bold", color = "darkgreen"))

this results in:

As mentioned by @user2739472 in the comments: If you only want to change the legend text labels and not the colours from ggplot's default palette, you can use scale_color_hue(labels = c("T999", "T888")) instead of scale_color_manual().

The simplest is to do a PivotChart. Select your array of dates (with a header) and create a new Pivot Chart (Insert / PivotChart / Ok) Then on the field list window, drag and drop the date column in the Axis list first and then in the value list first.

Step 1:

Step 2:

You are probably looking for get_attribute(). An example is shown here as well

def test_chart_renders_from_url(self):
    url = 'http://localhost:8000/analyse/'
    self.browser.get(url)
    org = driver.find_element_by_id('org')
    # Find the value of org?
    val = org.get_attribute("attribute name")

Call control.invalidate and the paint event will be raised.

The PHP5 version do not support in Ubuntu 18.04+ versions, so you have to do that configure manually from the source files. If you are using php-5.3.29,

# cd /usr/local/src/php-5.3.29
# ./configure --with-apxs2=/usr/local/apache/bin/apxs --with-mysql=MySQL_LOCATION/mysql --prefix=/usr/local/apache/php --with-config-file-path=/usr/local/apache/php --disable-cgi --with-zlib --with-gettext --with-gdbm --with-curl --enable-zip --with-xml --with-json --enable-shmop
# make
# make install

Restart the Apache server and check phpinfo function on the browser <?php echo phpinfo(); ?>

Note: Please change the MySQL_Location: --with-mysql=MySQL_LOCATION/mysql

function fixNumericScrolling() {
$$( "input[type=number]" ).addEvent( "mousewheel", function(e) {
    stopAll(e);     
} );
}

function stopAll(e) {
if( typeof( e.preventDefault               ) != "undefined" ) e.preventDefault();
if( typeof( e.stopImmediatePropagation     ) != "undefined" ) e.stopImmediatePropagation();
if( typeof( event ) != "undefined" ) {
    if( typeof( event.preventDefault           ) != "undefined" ) event.preventDefault();
    if( typeof( event.stopImmediatePropagation ) != "undefined" ) event.stopImmediatePropagation();
}

return false;
}

Try figsize param in df.plot(figsize=(width,height)):

df = pd.DataFrame({"a":[1,2],"b":[1,2]})
df.plot(figsize=(3,3));

df = pd.DataFrame({"a":[1,2],"b":[1,2]})
df.plot(figsize=(5,3));

The size in figsize=(5,3) is given in inches per (width, height)

https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.plot.html

Even simpler:

$get = @mysql_query("SELECT money FROM players WHERE username = '" . $_SESSION['username'] . "'");

note the quotes around username in the $_SESSION reference.

function truncate(input) {
   if (input.length > 5) {
      return input.substring(0, 5) + '...';
   }
   return input;
};

or in ES6

const truncate = (input) => input.length > 5 ? `${input.substring(0, 5)}...` : input;

watch only breaks on write, rwatch let you break on read, and awatch let you break on read/write.

You can set read watchpoints on memory locations:

gdb$ rwatch *0xfeedface
Hardware read watchpoint 2: *0xfeedface

but one limitation applies to the rwatch and awatch commands; you can't use gdb variables in expressions:

gdb$ rwatch $ebx+0xec1a04f
Expression cannot be implemented with read/access watchpoint.

So you have to expand them yourself:

gdb$ print $ebx 
$13 = 0x135700
gdb$ rwatch *0x135700+0xec1a04f
Hardware read watchpoint 3: *0x135700 + 0xec1a04f
gdb$ c
Hardware read watchpoint 3: *0x135700 + 0xec1a04f

Value = 0xec34daf
0x9527d6e7 in objc_msgSend ()

Edit: Oh, and by the way. You need either hardware or software support. Software is obviously much slower. To find out if your OS supports hardware watchpoints you can see the can-use-hw-watchpoints environment setting.

gdb$ show can-use-hw-watchpoints
Debugger's willingness to use watchpoint hardware is 1.

This might be seen as a little complex but does exactly what you want

SELECT 
  DISTINCT(p.`ProductID`) AS ProductID,
  SUM(pl.CashAmount) AS Cash,
  SUM(pr.CashAmount) AS `Check`,
  SUM(px.CashAmount) AS `Credit Card`,
  SUM(pl.CashAmount) + SUM(pr.CashAmount) +SUM(px.CashAmount) AS Amount
FROM
  `payments` AS p 
  LEFT JOIN (SELECT ProductID,PaymentMethod , IFNULL(Amount,0) AS CashAmount FROM payments WHERE PaymentMethod = 'Cash' GROUP BY ProductID , PaymentMethod ) AS pl 
    ON pl.`PaymentMethod` = p.`PaymentMethod` AND pl.ProductID = p.`ProductID`
  LEFT JOIN (SELECT ProductID,PaymentMethod , IFNULL(Amount,0) AS CashAmount FROM payments WHERE PaymentMethod = 'Check' GROUP BY ProductID , PaymentMethod) AS pr 
    ON pr.`PaymentMethod` = p.`PaymentMethod` AND pr.ProductID = p.`ProductID`
  LEFT JOIN (SELECT ProductID, PaymentMethod , IFNULL(Amount,0) AS CashAmount FROM payments WHERE PaymentMethod = 'Credit Card' GROUP BY ProductID , PaymentMethod) AS px 
    ON px.`PaymentMethod` = p.`PaymentMethod` AND px.ProductID = p.`ProductID`
GROUP BY p.`ProductID` ;

Output

ProductID | Cash | Check | Credit Card | Amount
-----------------------------------------------
    3     | 20   |  15   |   25        |  60
    4     | 5    |  6    |   7         |  18

SQL Fiddle Demo

This is a late addition but I was looking for information on the scale function myself and though it might help somebody else as well.

To modify the response from Ricardo Saporta a little bit.
Scaling is not done using standard deviation, at least not in version 3.6.1 of R, I base this on "Becker, R. (2018). The new S language. CRC Press." and my own experimentation.

X.man.scaled <- X/sqrt(sum(X^2)/(length(X)-1))
X.aut.scaled <- scale(X, center = F)

The result of these rows are exactly the same, I show it without centering because of simplicity.

I would respond in a comment but did not have enough reputation.

Instead of using the placeholder text, you'll want to set the actual text property of the field to MM/YYYY, set the delegate of the text field and listen for this method:

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {     // update the text of the label } 

Inside that method, you can figure out what the user has typed as they type, which will allow you to update the label accordingly.

I can't see that you're adding these controls to the control hierarchy. Try:

Controls.Add ( ddlCountries );
Controls.Add ( ddlStates );

Events won't be invoked unless the control is part of the control hierarchy.

The easiest solution isn't through python; its through the shell. From the first line of your file (#!/usr/bin/python) I'm guessing you're on a UNIX system. Just use print statements like you normally would, and don't open the file at all in your script. When you go to run the file, instead of

./script.py

to run the file, use

./script.py > <filename>

where you replace <filename> with the name of the file you want the output to go in to. The > token tells (most) shells to set stdout to the file described by the following token.

One important thing that needs to be mentioned here is that "script.py" needs to be made executable for ./script.py to run.

So before running ./script.py,execute this command

chmod a+x script.py (make the script executable for all users)

This depends upon scenarios.

Let's say you have some business functionality and you need to process something with that value further but having null value at time of processing would impact it.

Then, in that case, you can use Optional<?>.

String nullName = null;

String name = Optional.ofNullable(nullName)
                      .map(<doSomething>)
                      .orElse("Default value in case of null");

In your case, when you just select a single property, the easiest way is probably to bypass any formatting altogether:

get-qadgroupmember 'Domain Admins' | foreach { $_.Name }

This will get you a simple string[] without column headings or empty lines. The Format-* cmdlets are mainly for human consumption and thus their output is not designed to be easily machine-readable or -parseable.

For multiple properties I'd probably go with the -f format operator. Something along the lines of

alias | %{ "{0,-10}{1,-10}{2,-60}" -f $_.COmmandType,$_.Name,$_.Definition }

which isn't pretty but gives you easy and complete control over the output formatting. And no empty lines :-)

If you are offline and have untared the package, you can use command prompt.

Navigate to the untared folder and run:

python setup.py install

Example that works for me on OSX / MacOS (replace name of device)

~/Library/Android/sdk/emulator/emulator @Pixel_2_API_28 -no-snapshot -wipe-data

At the risk of being discursive I think behind this is the question of why the Android Studio / Gradle experience is so bad.

Typical Clojure experience :

• download project with dependencies listed in project.clj.
• Leiningen gets the dependencies thanks to Clojars and Maven.
• Project compiles.

Typical Android Studio / Gradle experience :

• "Import my Eclipse project".
• OK project imported.
• Gradle is doing it's thang ... wait ... wait ... wait ... Gradle has finished.
• Compile ... can't compile because I don't know what an X is / can't find Y library.

I'm not sure this is Gradle's fault exactly. But the "import from Eclipse project" seems pretty flaky. For all of Gradle's alleged sophistication and the virtues of a build-system, Android Studio just doesn't seem to import the build dependencies or build-process from Eclipse very well.

It doesn't tell you when it's failed to import a complete dependency graph. The Android Studio gives no useful help or tips as to how to solve the problem. It doesn't tell you where you can manually look in the Eclipse folders. It doesn't tell you which library seems to be missing. Or help you search Maven etc. for them.

In 2016 things like Leiningen / Clojars, or node's npm, or Python's pip, or the Debian apkg (and I'm sure many similar package managers for other languages and systems) all work beautifully ... missing dependencies are thing of the past.

Except with Android. Android Studio is now the only place where I still seem to experience missing-dependency hell.

I'm inclined to say this is Google's fault. They broke the Android ecosystem (and thousands of existing Android projects / online tutorials) when they cavalierly decided to shift from Eclipse to Android Studio / Gradle without producing a robust conversion process. People whose projects work in Eclipse aren't adapting them to AS (presumably because it's a pain for them). And people trying to use those projects in AS are hitting the same issues.

And anyway, if Gradle is this super-powerful build system, why am I still managing a whole lot of other dependencies in the sdk manager? Why can't a project that needs, say, the ndk specify this in its Gradle file so that it gets automatically installed and built-against when needed? Why is NDK special? Similarly for target platforms? Why am I installing them explicitly in the IDE rather than just checking my project against them and having this all sorted for me behind the scenes?

There is a method in Guava Sets which can help here:

public static <E>  boolean equals(Set<? extends E> set1, Set<? extends E> set2){
return Sets.symmetricDifference(set1,set2).isEmpty();
}

It is certain that you can not do it through Ajax call.

However, there is a workaround.

Steps :

If you are using form.submit() for downloading the file, what you can do is :

1. Create an ajax call from client to server and store the file stream inside the session.
2. Upon "success" being returned from server, call your form.submit() to just stream the file stream stored in the session.

This is helpful in case when you want to decide whether or not file needs to be downloaded after making form.submit(), eg: there can be a case where on form.submit(), an exception occurs on the server side and instead of crashing, you might need to show a custom message on the client side, in such case this implementation might help.

You can use a common object and count the frequency of each value in the first array. For the second array, decrement the value in the common object. Then iterate through all keys and add all the keys whose values is more than 1.

const difference = (a1, a2) => {_x000D_
  var obj = {};_x000D_
  a1.forEach(v => obj[v] = (obj[v] || 0) + 1);_x000D_
  a2.forEach(v => obj[v] = (obj[v] || 0) - 1);_x000D_
  return Object_x000D_
      .keys(obj)_x000D_
      .reduce((r,k) => {_x000D_
        if(obj[k] > 0)_x000D_
          r = r.concat(Array.from({length: obj[k]}).fill(k));_x000D_
        return r;_x000D_
      },[]);_x000D_
};_x000D_
const result = difference(['a', 'a', 'b', 'c', 'd'], ['a', 'b']);_x000D_
console.log(result);

Yes, the first one is a static method also called class method, while the second one is an instance method.

Consider the following examples, to understand it in more detail.

In ES5

function Person(firstName, lastName) {
   this.firstName = firstName;
   this.lastName = lastName;
}

Person.isPerson = function(obj) {
   return obj.constructor === Person;
}

Person.prototype.sayHi = function() {
   return "Hi " + this.firstName;
}

In the above code, isPerson is a static method, while sayHi is an instance method of Person.

Below, is how to create an object from Person constructor.

var aminu = new Person("Aminu", "Abubakar");

Using the static method isPerson.

Person.isPerson(aminu); // will return true

Using the instance method sayHi.

aminu.sayHi(); // will return "Hi Aminu"

In ES6

class Person {
   constructor(firstName, lastName) {
      this.firstName = firstName;
      this.lastName = lastName;
   }

   static isPerson(obj) {
      return obj.constructor === Person;
   }

   sayHi() {
      return `Hi ${this.firstName}`;
   }
}

Look at how static keyword was used to declare the static method isPerson.

To create an object of Person class.

const aminu = new Person("Aminu", "Abubakar");

Using the static method isPerson.

Person.isPerson(aminu); // will return true

Using the instance method sayHi.

aminu.sayHi(); // will return "Hi Aminu"

NOTE: Both examples are essentially the same, JavaScript remains a classless language. The class introduced in ES6 is primarily a syntactical sugar over the existing prototype-based inheritance model.

#!/bin/bash

req=$(curl -s -X GET http://host:8080/some/resource -H "Accept: application/json") 2>&1
echo "${req}"

this helped me

git checkout -b newbranch
git checkout master
git merge newbranch
git branch -d newbranch

I believe you are looking for:

gethostbyaddress

Just pass it the localhost IP.

There is also a gethostbyname function, that is also usefull.

Maybe someone find this ready-to-use piece of code useful. It allows to create CSVs from all spreadsheets in Excel's workbook.

# -*- coding: utf-8 -*-
import xlrd
import csv
from os import sys

def csv_from_excel(excel_file):
    workbook = xlrd.open_workbook(excel_file)
    all_worksheets = workbook.sheet_names()
    for worksheet_name in all_worksheets:
        worksheet = workbook.sheet_by_name(worksheet_name)
        with open(u'{}.csv'.format(worksheet_name), 'wb') as your_csv_file:
            wr = csv.writer(your_csv_file, quoting=csv.QUOTE_ALL)
            for rownum in xrange(worksheet.nrows):
                wr.writerow([unicode(entry).encode("utf-8") for entry in worksheet.row_values(rownum)])

if __name__ == "__main__":
    csv_from_excel(sys.argv[1])

A note for others who may be using Owl Carousel v 1.3.2:

You can replace the navigation text in the settings where you're enabling the navigation.

navigation:true,
navigationText: [
   "<i class='fa fa-chevron-left'></i>",
   "<i class='fa fa-chevron-right'></i>"
]

Big task, chances are you shouldn't reinvent the wheel rather using an existing wheel (such as paypal).

However, if you insist on continuing. Start small, you can use a credit card processing facility (Moneris, Authorize.NET) to process credit cards. Most providers have an API you can use. Be wary that you may need to use different providers depending on the card type (Discover, Visa, Amex, Mastercard) and Country (USA, Canada, UK). So build it so that you can communicate with multiple credit card processing APIs.

Security is essential if you are storing credit cards and payment details. Ensure that you are encrypting things properly.

Again, don't reinvent the wheel. You are better off using an existing provider and focussing your development attention on solving an problem that can't easily be purchase.

Is this what you are looking for ?

if (new int[] { 1, 2, 3, 4, 5 }.Contains(value))

Suppose you have following lines of code

MyUrl = "www.google.com" #Your url goes here
urllib.urlretrieve(MyUrl)

If you are receiving following error message

AttributeError: module 'urllib' has no attribute 'urlretrieve'

Then you should try following code to fix the issue:

import urllib.request
MyUrl = "www.google.com" #Your url goes here
urllib.request.urlretrieve(MyUrl)

My task was to implement ListView which expands when clicked. The additional space shows EditText where you can input some text. App should be functional on 2.2+ (up to 4.2.2 at time of writing this)

I tried numerous solutions from this post and others I could find; tested them on 2.2 up to 4.2.2 devices. None of solutions was satisfactionary on all devices 2.2+, each solution presented with different problems.

I wanted to share my final solution :

1. set listview to android:descendantFocusability="afterDescendants"
2. set listview to setItemsCanFocus(true);
3. set your activity to android:windowSoftInputMode="adjustResize" Many people suggest adjustPan but adjustResize gives much better ux imho, just test this in your case. With adjustPan you will get bottom listitems obscured for instance. Docs suggest that ("This is generally less desirable than resizing"). Also on 4.0.4 after user starts typing on soft keyboard the screen pans to the top.
4. on 4.2.2 with adjustResize there are some problems with EditText focus. The solution is to apply rjrjr solution from this thread. It looks scarry but it is not. And it works. Just try it.

Additional 5. Due to adapter being refreshed (because of view resize) when EditText gains focus on pre HoneyComb versions I found an issue with reversed views: getting View for ListView item / reverse order on 2.2; works on 4.0.3

If you are doing some animations you might want to change behaviour to adjustPan for pre-honeycomb versions so that resize doesnt fire and adapter doesn't refresh the views. You just need to add something like this

if(android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.HONEYCOMB)
        getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN);

All this gives acceptable ux on 2.2 - 4.2.2 devices. Hope it will save people some time as it took me at least several hours to come to this conclusion.

I'm getting an error in the IF conditional. What am I doing wrong?

There reason that you get a SyntaxError is that there is no && operator in Python. Likewise || and ! are not valid Python operators.

Some of the operators you may know from other languages have a different name in Python. The logical operators && and || are actually called and and or. Likewise the logical negation operator ! is called not.

So you could just write:

if len(a) % 2 == 0 and len(b) % 2 == 0:

or even:

if not (len(a) % 2 or len(b) % 2):

Some additional information (that might come in handy):

I summarized the operator "equivalents" in this table:

+------------------------------+---------------------+
|  Operator (other languages)  |  Operator (Python)  |
+==============================+=====================+
|              &&              |         and         |
+------------------------------+---------------------+
|              ||              |         or          |
+------------------------------+---------------------+
|              !               |         not         |
+------------------------------+---------------------+

See also Python documentation: 6.11. Boolean operations.

Besides the logical operators Python also has bitwise/binary operators:

+--------------------+--------------------+
|  Logical operator  |  Bitwise operator  |
+====================+====================+
|        and         |         &          |
+--------------------+--------------------+
|         or         |         |          |
+--------------------+--------------------+

There is no bitwise negation in Python (just the bitwise inverse operator ~ - but that is not equivalent to not).

See also 6.6. Unary arithmetic and bitwise/binary operations and 6.7. Binary arithmetic operations.

The logical operators (like in many other languages) have the advantage that these are short-circuited. That means if the first operand already defines the result, then the second operator isn't evaluated at all.

To show this I use a function that simply takes a value, prints it and returns it again. This is handy to see what is actually evaluated because of the print statements:

>>> def print_and_return(value):
...     print(value)
...     return value

>>> res = print_and_return(False) and print_and_return(True)
False

As you can see only one print statement is executed, so Python really didn't even look at the right operand.

This is not the case for the binary operators. Those always evaluate both operands:

>>> res = print_and_return(False) & print_and_return(True);
False
True

But if the first operand isn't enough then, of course, the second operator is evaluated:

>>> res = print_and_return(True) and print_and_return(False);
True
False

To summarize this here is another Table:

+-----------------+-------------------------+
|   Expression    |  Right side evaluated?  |
+=================+=========================+
| `True` and ...  |           Yes           |
+-----------------+-------------------------+
| `False` and ... |           No            |
+-----------------+-------------------------+
|  `True` or ...  |           No            |
+-----------------+-------------------------+
| `False` or ...  |           Yes           |
+-----------------+-------------------------+

The True and False represent what bool(left-hand-side) returns, they don't have to be True or False, they just need to return True or False when bool is called on them (1).

So in Pseudo-Code(!) the and and or functions work like these:

def and(expr1, expr2):
    left = evaluate(expr1)
    if bool(left):
        return evaluate(expr2)
    else:
        return left

def or(expr1, expr2):
    left = evaluate(expr1)
    if bool(left):
        return left
    else:
        return evaluate(expr2)

Note that this is pseudo-code not Python code. In Python you cannot create functions called and or or because these are keywords. Also you should never use "evaluate" or if bool(...).

Customizing the behavior of your own classes

This implicit bool call can be used to customize how your classes behave with and, or and not.

To show how this can be customized I use this class which again prints something to track what is happening:

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

    def __bool__(self):
        print('__bool__ called on {!r}'.format(self))
        return bool(self.value)

    __nonzero__ = __bool__  # Python 2 compatibility

    def __repr__(self):
        return "{self.__class__.__name__}({self.value})".format(self=self)

So let's see what happens with that class in combination with these operators:

>>> if Test(True) and Test(False):
...     pass
__bool__ called on Test(True)
__bool__ called on Test(False)

>>> if Test(False) or Test(False):
...     pass
__bool__ called on Test(False)
__bool__ called on Test(False)

>>> if not Test(True):
...     pass
__bool__ called on Test(True)

If you don't have a __bool__ method then Python also checks if the object has a __len__ method and if it returns a value greater than zero. That might be useful to know in case you create a sequence container.

See also 4.1. Truth Value Testing.

NumPy arrays and subclasses

Probably a bit beyond the scope of the original question but in case you're dealing with NumPy arrays or subclasses (like Pandas Series or DataFrames) then the implicit bool call will raise the dreaded ValueError:

>>> import numpy as np
>>> arr = np.array([1,2,3])
>>> bool(arr)
ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.all()
>>> arr and arr
ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.all()

>>> import pandas as pd
>>> s = pd.Series([1,2,3])
>>> bool(s)
ValueError: The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all().
>>> s and s
ValueError: The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all().

In these cases you can use the logical and function from NumPy which performs an element-wise and (or or):

>>> np.logical_and(np.array([False,False,True,True]), np.array([True, False, True, False]))
array([False, False,  True, False])
>>> np.logical_or(np.array([False,False,True,True]), np.array([True, False, True, False]))
array([ True, False,  True,  True])

If you're dealing just with boolean arrays you could also use the binary operators with NumPy, these do perform element-wise (but also binary) comparisons:

>>> np.array([False,False,True,True]) & np.array([True, False, True, False])
array([False, False,  True, False])
>>> np.array([False,False,True,True]) | np.array([True, False, True, False])
array([ True, False,  True,  True])

(1)

That the bool call on the operands has to return True or False isn't completely correct. It's just the first operand that needs to return a boolean in it's __bool__ method:

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

    def __bool__(self):
        return self.value

    __nonzero__ = __bool__  # Python 2 compatibility

    def __repr__(self):
        return "{self.__class__.__name__}({self.value})".format(self=self)

>>> x = Test(10) and Test(10)
TypeError: __bool__ should return bool, returned int
>>> x1 = Test(True) and Test(10)
>>> x2 = Test(False) and Test(10)

That's because and actually returns the first operand if the first operand evaluates to False and if it evaluates to True then it returns the second operand:

>>> x1
Test(10)
>>> x2
Test(False)

Similarly for or but just the other way around:

>>> Test(True) or Test(10)
Test(True)
>>> Test(False) or Test(10)
Test(10)

However if you use them in an if statement the if will also implicitly call bool on the result. So these finer points may not be relevant for you.

It means it’ll do nothing. It’s an attempt to have the link not ‘navigate’ anywhere. But it’s not the right way.

You should actually just return false in the onclick event, like so:

<a href="#" onclick="return false;">hello</a>

Typically it’s used if the link is doing some ‘JavaScript-y’ thing. Like posting an AJAX form, or swapping an image, or whatever. In that case you just make whatever function is being called return false.

To make your website completely awesome, however, generally you’ll include a link that does the same action, if the person browsing it chooses not to run JavaScript.

<a href="backup_page_displaying_image.aspx"
   onclick="return coolImageDisplayFunction();">hello</a>

The detailed steps are as follow.

1. Add application manifest file to solution
2. Change application setting to "app.manifest"
3. Update tag of "requestedExecutionLevel" to requireAdministrator.

Note that using this code you need to turn off the security settings of ClickOnce, for do this, go inside Properties -> Security -> ClickOnce Security

I wrote extension method

public static string ToMatrixString<T>(this T[,] matrix, string delimiter = "\t")
{
    var s = new StringBuilder();

    for (var i = 0; i < matrix.GetLength(0); i++)
    {
        for (var j = 0; j < matrix.GetLength(1); j++)
        {
            s.Append(matrix[i, j]).Append(delimiter);
        }

        s.AppendLine();
    }

    return s.ToString();
}

To use just call the method

results.ToMatrixString();

You can store any kind of data in a session using:

Session["VariableName"]=value;

This variable will last 20 mins or so.

For SQL Server (2008 and above):

SELECT COLUMNPROPERTY(OBJECT_ID('mytable'), 'Remarks', 'PRECISION');

COLUMNPROPERTY returns information for a column or parameter (id, column/parameter, property). The PRECISION property returns the length of the data type of the column or parameter.

COLUMNPROPERTY documentation

Maybe this might help you. I added Shell32.lib to my Linker --> Input --> Additional Dependencies and it stopped this error. I found out about it from this post: https://discourse.libsdl.org/t/windows-build-fails-with-missing-symbol-imp-commandlinetoargvw/27256/3

If you want to snap particular running Windows app you’ll have to acquire a handle by looping over all open windows in your system.

It’s easier if you can open this app from Python script. Then you can convert process pid into window handle.

Another challenge is to snap the app that runs in particular monitor. I have 3 monitor system and I had to figure out how to snap display 2 and 3.

This example will take multiple application snapshots and save them into JPEG files.

import wx

print(wx.version())
app=wx.App()  # Need to create an App instance before doing anything
dc=wx.Display.GetCount()
print(dc)
#e(0)
displays = (wx.Display(i) for i in range(wx.Display.GetCount()))
sizes = [display.GetGeometry().GetSize() for display in displays]

for (i,s) in enumerate(sizes):
    print("Monitor{} size is {}".format(i,s))   
screen = wx.ScreenDC()
#pprint(dir(screen))
size = screen.GetSize()

print("Width = {}".format(size[0]))
print("Heigh = {}".format(size[1]))

width=size[0]
height=size[1]
x,y,w,h =putty_rect

bmp = wx.Bitmap(w,h)
mem = wx.MemoryDC(bmp)

for i in range(98):
    if 1:
        #1-st display:

        #pprint(putty_rect)
        #e(0)

        mem.Blit(-x,-y,w+x,h+y, screen, 0,0)

    if 0:
        #2-nd display:
        mem.Blit(0, 0, x,y, screen, width,0)
    #e(0)

    if 0:
        #3-rd display:
        mem.Blit(0, 0, width, height, screen, width*2,0)

    bmp.SaveFile(os.path.join(home,"image_%s.jpg" % i), wx.BITMAP_TYPE_JPEG)    
    print (i)
    sleep(0.2)
del mem

Details are here

You can leave action attribute blank. The form will automatically submit itself in the same page.

<form action="">

According to the w3c specification, action attribute must be non-empty valid url in general. There is also an explanation for some situations in which the action attribute may be left empty.

The action of an element is the value of the element’s formaction attribute, if the element is a Submit Button and has such an attribute, or the value of its form owner’s action attribute, if it has one, or else the empty string.

So they both still valid and works:

<form action="">
<form action="FULL_URL_STRING_OF_CURRENT_PAGE">

If you are sure your audience is using html5 browsers, you can even omit the action attribute:

<form>

Using select2 version 4 you can use this short notation:

$('#remote').html('').select2({data: {id:null, text: null}});

This passes a json array with null id and text to the select2 on creation but first, with .html('') empties the previously stored results.

since df.save(path, source, mode) is deprecated, (http://spark.apache.org/docs/1.5.0/api/scala/index.html#org.apache.spark.sql.DataFrame)

use df.write.format(source).mode("overwrite").save(path)
where df.write is DataFrameWriter

'source' can be ("com.databricks.spark.avro" | "parquet" | "json")

Using 'javascript:void 0' will do cause problem in IE

when you click the link, it will trigger onbeforeunload event of window !

<!doctype html>
<html>
<head>
</head>
<body>
<a href="javascript:void(0);" >Click me!</a>
<script>
window.onbeforeunload = function() {
    alert( 'oops!' );
};
</script>
</body>
</html>

I think the Python method insert is what you're looking for:

Inserts element x at position i. list.insert(i,x)

array = [1,2,3,4,5]

array.insert(1,20)

print(array)

# prints [1,2,20,3,4,5]

I was trying to open an old GitHub project with the latest android studio that's why got this error. I tried almost all the way that mentions in this post but none of them is work.

In my case, I update my Gradle version with my latest project, and the issue resolved. Use your latest Gradle version to resolve the issue.

This is not valid TypeScript code. You can not have method invocations in the body of a class.

// INVALID CODE
export class AppComponent {
  public n: number = 1;
  setTimeout(function() {
    n = n + 10;
  }, 1000);
}

Instead move the setTimeout call to the constructor of the class. Additionally, use the arrow function => to gain access to this.

export class AppComponent {
  public n: number = 1;

  constructor() {
    setTimeout(() => {
      this.n = this.n + 10;
    }, 1000);
  }

}

In TypeScript, you can only refer to class properties or methods via this. That's why the arrow function => is important.