The Wikipedia newline article might help you out. Here is an excerpt:

The different newline conventions often cause text files that have been transferred between systems of different types to be displayed incorrectly. For example, files originating on Unix or Apple Macintosh systems may appear as a single long line on some programs running on Microsoft Windows. Conversely, when viewing a file originating from a Windows computer on a Unix system, the extra CR may be displayed as ^M or at the end of each line or as a second line break.

Just Simply paste this code you will get the desired output that you needed.

 {{ Form::select ('myselect', ['1' => 'Item 1', '2' => 'Item 2'], 2 , ['id' =>'myselect']) }}` `

As it happens I was just reading about this this morning on my way to work in Java Concurrency In Practice by Brian Goetz. Basically he says you should do one of three things

1. Propagate the InterruptedException - Declare your method to throw the checked InterruptedException so that your caller has to deal with it.

2. Restore the Interrupt - Sometimes you cannot throw InterruptedException. In these cases you should catch the InterruptedException and restore the interrupt status by calling the interrupt() method on the currentThread so the code higher up the call stack can see that an interrupt was issued, and quickly return from the method. Note: this is only applicable when your method has "try" or "best effort" semantics, i. e. nothing critical would happen if the method doesn't accomplish its goal. For example, log() or sendMetric() may be such method, or boolean tryTransferMoney(), but not void transferMoney(). See here for more details.

3. Ignore the interruption within method, but restore the status upon exit - e. g. via Guava's Uninterruptibles. Uninterruptibles take over the boilerplate code like in the Noncancelable Task example in JCIP § 7.1.3.

split is deprecated since it is part of the family of functions which make use of POSIX regular expressions; that entire family is deprecated in favour of the PCRE (preg_*) functions.

If you do not need the regular expression functionality, then explode is a very good choice (and would have been recommended over split even if that were not deprecated), if on the other hand you do need to use regular expressions then the PCRE alternate is simply preg_split.

Reading the Spark documentation I found an easier solution.

Since version 1.4 of spark there is a function drop(col) which can be used in pyspark on a dataframe.

You can use it in two ways

1. df.drop('age').collect()
2. df.drop(df.age).collect()

Pyspark Documentation - Drop

I also had the same problem while accessing RESTful web services. And I their with the below code to overcome the issue:

public class Test {
    //Bypassing the SSL verification to execute our code successfully 
    static {
        disableSSLVerification();
    }

    public static void main(String[] args) {    
        //Access HTTPS URL and do something    
    }
    //Method used for bypassing SSL verification
    public static void disableSSLVerification() {

        TrustManager[] trustAllCerts = new TrustManager[] { new X509TrustManager() {
            public java.security.cert.X509Certificate[] getAcceptedIssuers() {
                return null;
            }

            public void checkClientTrusted(X509Certificate[] certs, String authType) {
            }

            public void checkServerTrusted(X509Certificate[] certs, String authType) {
            }

        } };

        SSLContext sc = null;
        try {
            sc = SSLContext.getInstance("SSL");
            sc.init(null, trustAllCerts, new java.security.SecureRandom());
        } catch (KeyManagementException e) {
            e.printStackTrace();
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        }
        HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());

        HostnameVerifier allHostsValid = new HostnameVerifier() {
            public boolean verify(String hostname, SSLSession session) {
                return true;
            }
        };      
        HttpsURLConnection.setDefaultHostnameVerifier(allHostsValid);           
    }
}

It worked for me. try it!!

you can use unlink to remove the symlink.

For Example:

cd ~/projects/node-redis 
npm link                 
cd ~/projects/node-bloggy
npm link redis             # links to your local redis

To reinstall from your package.json:

npm unlink redis
npm install

https://www.tachyonstemplates.com/npm-cheat-sheet/#unlinking-a-npm-package-from-an-application

It seems that in lollipop and up (or maybe just a different WebView Version) that calling cprcrack's onHideCustomView() method does not work. It works if it is called from the exit fullscreen button but when you specifically call the method it will only exit fullscreen but the webView stays blank. A way around it is to simply add these lines of code to onHideCustomView():

String js = "javascript:";
js += "var _ytrp_html5_video = document.getElementsByTagName('video')[0];";
js += "_ytrp_html5_video.webkitExitFullscreen();";
webView.loadUrl(js);

This will notify the webView that fullscreen has exited.

Connect offers a "higher level" APIs for common HTTP server functionality like session management, authentication, logging and more. Express is built on top of Connect with advanced (Sinatra like) functionality.

I had a similar problem recently. I had a form and PHP function that to be run once the form is submitted. However, I needed to run a javascript first.

        // This variable is used in order to determine if we already did our js fun
        var window.alreadyClicked = "NO"
        $("form:not('#press')").bind("submit", function(e){
            // Check if we already run js part
            if(window.alreadyClicked == "NO"){
                // Prevent page refresh
                e.preventDefault();
                // Change variable value so next time we submit the form the js wont run
                window.alreadyClicked = "YES"
                // Here is your actual js you need to run before doing the php part
                xxxxxxxxxx

                // Submit the form again but since we changed the value of our variable js wont be run and page can reload (and php can do whatever you told it to)
                $("form:not('#press')").submit()
            } 
        });

I use Windows Server 2012 for hosting for a long time and it just stop working after a more than years without any problem. My solution was to add public IP address of the server to list of relays and enabled Windows Integrated Authentication.

I just made two changes and I don't which help.

Go to IIS 6 Manager

Select properties of SMTP server

On tab Access, select Relays

Add your public IP address

Close the dialog and on the same tab click to Authentication button.

Add Integrated Windows Authentication

Maybe some step is not needed, but it works.

This would have been a comment under Brad's answer, but I don't have a high enough reputation.

Recently I found that I needed the key of the multidimensional array too, i.e., it wasn't just an index for the array, in the foreach loop.

In order to achieve that, you could use something very similar to the accepted answer, but instead split the key and value as follows

foreach ($mda as $mdaKey => $mdaData) {
    echo $mdaKey . ": " . $mdaData["value"];
}

Hope that helps someone.

Try running git status on the file. It will print an error if it's not tracked by git

PS$> git status foo.txt
error: pathspec 'foo.txt' did not match any file(s) known to git.

Here are two other software packages which can be used for DNS caching on Linux:

• dnsmasq
• bind

After configuring the software for DNS forwarding and caching, you then set the system's DNS resolver to 127.0.0.1 in /etc/resolv.conf.

If your system is using NetworkManager you can either try using the dns=dnsmasq option in /etc/NetworkManager/NetworkManager.conf or you can change your connection settings to Automatic (Address Only) and then use a script in the /etc/NetworkManager/dispatcher.d directory to get the DHCP nameserver, set it as the DNS forwarding server in your DNS cache software and then trigger a configuration reload.

event.key === "Delete"

More recent and much cleaner: use event.key. No more arbitrary number codes!

NOTE: The old properties (.keyCode and .which) are Deprecated.

document.addEventListener('keydown', function(event) {
    const key = event.key; // const {key} = event; ES6+
    if (key === "Delete") {
        // Do things
    }
});

Mozilla Docs

Supported Browsers

Pure javascript solution with scrollIntoView() function:

document.getElementById('title1').scrollIntoView({block: 'start', behavior: 'smooth'});

<h2 id="title1">Some title</h2>

P.S. 'smooth' parameter now works from Chrome 61 as julien_c mentioned in the comments.

From the Maven docs, sounds like it's just a difference in which repository you install the package into:

• install - install the package into the local repository, for use as a dependency in other projects locally
• deploy - done in an integration or release environment, copies the final package to the remote repository for sharing with other developers and projects.

Maybe there is some confusion in that "install" to the CI server installs it to it's local repository, which then you as a user are sharing?

python enumerate function will be satisfied your requirements

result = list(enumerate([1,3,7,12]))
print result

output

[(0, 1), (1, 3), (2, 7),(3,12)]

Very fast solution

SELECT a.* 
FROM
    purchases a 
    JOIN ( 
        SELECT customer, min( id ) as id 
        FROM purchases 
        GROUP BY customer 
    ) b USING ( id );

and really very fast if table is indexed by id:

create index purchases_id on purchases (id);

Use theme():

d <- data.frame(x=gl(10, 1, 10, labels=paste("long text label ", letters[1:10])), y=rnorm(10))
ggplot(d, aes(x=x, y=y)) + geom_point() +
theme(text = element_text(size=20))

I don't see a way to run a single untagged test within a test class but I am providing my workflow since it seems to be useful for anyone who runs into this question.

From within a sbt session:

test:testOnly *YourTestClass

(The asterisk is a wildcard, you could specify the full path com.example.specs.YourTestClass.)

All tests within that test class will be executed. Presumably you're most concerned with failing tests, so correct any failing implementations and then run:

test:testQuick

... which will only execute tests that failed. (Repeating the most recently executed test:testOnly command will be the same as test:testQuick in this case, but if you break up your test methods into appropriate test classes you can use a wildcard to make test:testQuick a more efficient way to re-run failing tests.)

Note that the nomenclature for test in ScalaTest is a test class, not a specific test method, so all untagged methods are executed.

If you have too many test methods in a test class break them up into separate classes or tag them appropriately. (This could be a signal that the class under test is in violation of single responsibility principle and could use a refactoring.)

You can do like this:

List<String> yourList = new ArrayList<String>();
Collections.sort(yourList, Collections.reverseOrder());

Collection has a default Comparator that can help you with that.

Also, if you want to use some Java 8 new features, you can do like that:

List<String> yourList = new ArrayList<String>();
yourList = yourList.stream().sorted(Collections.reverseOrder()).collect(Collectors.toList());

For your purpose, I'd prefer using position instead of floating:

http://jsfiddle.net/aas7w0tw/1/

Use a parent with relative position:

position: relative;

And children in absolute position:

position: absolute;

In bonus, you can better drive the dimensions of your components.

You can use Path.GetFileName to get the filename from the full path

private string[] pdfFiles = Directory.GetFiles("C:\\Documents", "*.pdf")
                                     .Select(Path.GetFileName)
                                     .ToArray();

EDIT: the solution above uses LINQ, so it requires .NET 3.5 at least. Here's a solution that works on earlier versions:

private string[] pdfFiles = GetFileNames("C:\\Documents", "*.pdf");

private static string[] GetFileNames(string path, string filter)
{
    string[] files = Directory.GetFiles(path, filter);
    for(int i = 0; i < files.Length; i++)
        files[i] = Path.GetFileName(files[i]);
    return files;
}

I do not want to craft special error handlers for every loop structure in my code so I have a way of finding problem loops using my standard error handler so that I can then write a special error handler for them.

If an error occurs in a loop, I normally want to know about what caused the error rather than just skip over it. To find out about these errors, I write error messages to a log file as many people do. However writing to a log file is dangerous if an error occurs in a loop as the error can be triggered for every time the loop iterates and in my case 80 000 iterations is not uncommon. I have therefore put some code into my error logging function that detects identical errors and skips writing them to the error log.

My standard error handler that is used on every procedure looks like this. It records the error type, procedure the error occurred in and any parameters the procedure received (FileType in this case).

procerr:
    Call NewErrorLog(Err.number, Err.Description, "GetOutputFileType", FileType)
    Resume exitproc

My error logging function which writes to a table (I am in ms-access) is as follows. It uses static variables to retain the previous values of error data and compare them to current versions. The first error is logged, then the second identical error pushes the application into debug mode if I am the user or if in other user mode, quits the application.

Public Function NewErrorLog(ErrCode As Variant, ErrDesc As Variant, Optional Source As Variant = "", Optional ErrData As Variant = Null) As Boolean
On Error GoTo errLogError

    'Records errors from application code
    Dim dbs As Database
    Dim rst As Recordset

    Dim ErrorLogID As Long
    Dim StackInfo As String
    Dim MustQuit As Boolean
    Dim i As Long

    Static ErrCodeOld As Long
    Static SourceOld As String
    Static ErrDataOld As String

    'Detects errors that occur in loops and records only the first two.
    If Nz(ErrCode, 0) = ErrCodeOld And Nz(Source, "") = SourceOld And Nz(ErrData, "") = ErrDataOld Then
        NewErrorLog = True
        MsgBox "Error has occured in a loop: " & Nz(ErrCode, 0) & Space(1) & Nz(ErrDesc, "") & ": " & Nz(Source, "") & "[" & Nz(ErrData, "") & "]", vbExclamation, Appname
        If Not gDeveloping Then  'Allow debugging
            Stop
            Exit Function
        Else
            ErrDesc = "[loop]" & Nz(ErrDesc, "")  'Flag this error as coming from a loop
            MsgBox "Error has been logged, now Quiting", vbInformation, Appname
            MustQuit = True  'will Quit after error has been logged
        End If
    Else
        'Save current values to static variables
        ErrCodeOld = Nz(ErrCode, 0)
        SourceOld = Nz(Source, "")
        ErrDataOld = Nz(ErrData, "")
    End If

    'From FMS tools pushstack/popstack - tells me the names of the calling procedures
    For i = 1 To UBound(mCallStack)
        If Len(mCallStack(i)) > 0 Then StackInfo = StackInfo & "\" & mCallStack(i)
    Next

    'Open error table
    Set dbs = CurrentDb()
    Set rst = dbs.OpenRecordset("tbl_ErrLog", dbOpenTable)

    'Write the error to the error table
    With rst
        .AddNew
        !ErrSource = Source
        !ErrTime = Now()
        !ErrCode = ErrCode
        !ErrDesc = ErrDesc
        !ErrData = ErrData
        !StackTrace = StackInfo
        .Update
        .BookMark = .LastModified
        ErrorLogID = !ErrLogID
    End With


    rst.Close: Set rst = Nothing
    dbs.Close: Set dbs = Nothing
    DoCmd.Hourglass False
    DoCmd.Echo True
    DoEvents
    If MustQuit = True Then DoCmd.Quit

exitLogError:
    Exit Function

errLogError:
    MsgBox "An error occured whilst logging the details of another error " & vbNewLine & _
    "Send details to Developer: " & Err.number & ", " & Err.Description, vbCritical, "Please e-mail this message to developer"
    Resume exitLogError

End Function

Note that an error logger has to be the most bullet proofed function in your application as the application cannot gracefully handle errors in the error logger. For this reason, I use NZ() to make sure that nulls cannot sneak in. Note that I also add [loop] to the second identical error so that I know to look in the loops in the error procedure first.

As I know jsPDF is not working with CSS and the same issue I was facing.

To solve this issue, I used Html2Canvas. Just Add HTML2Canvas JS and then use pdf.addHTML() instead of pdf.fromHTML().

Here's my code (no other code):

 var pdf = new jsPDF('p', 'pt', 'letter');
 pdf.addHTML($('#ElementYouWantToConvertToPdf')[0], function () {
     pdf.save('Test.pdf');
 });

Best of Luck!

Edit: Refer to this line in case you didn't find .addHTML()

im using only this

import {globalVar} from "./globals";
declare let window:any;
window.globalVar = globalVar;

In my case: I forgot to activate virtualenv

I installed "pip install example" in the wrong virtualenv

If the source date contains minutes and seconds part, your date comparison will fail. you need to convert source date to the required format using to_char and the target date also.

To further work with array of maps, the followings could help:

@RequestMapping(value = "/process", method = RequestMethod.POST, headers = "Accept=application/json")
public void setLead(@RequestBody Collection<? extends Map<String, Object>> payload) throws Exception {

  List<Map<String,Object>> maps = new ArrayList<Map<String,Object>>();
  maps.addAll(payload);

}

Works on almost all browsers.

You can try giving padding-bottom as a percentage.

<div style="height:0;width:20%;padding-bottom:20%;background-color:red">
<div>
Content goes here
</div>
</div>

The outer div is making a square and inner div contains the content. This solution worked for me many times.

Here's a jsfiddle

==EDIT==

I checked your question again and have concluded this can't be done.

ProductName is not unique, It must either be part of the Group By or excluded from your results.

For example how would SQL present these results to you if you Group By only ProductID?

ProductID | ProductName | OrderQuantity 
---------------------------------------
1234      | abc         | 1
1234      | def         | 1
1234      | ghi         | 1
1234      | jkl         | 1

TL;DR

Python does not have unary increment/decrement operators (--/++). Instead, to increment a value, use

a += 1

More detail and gotchas

But be careful here. If you're coming from C, even this is different in python. Python doesn't have "variables" in the sense that C does, instead python uses names and objects, and in python ints are immutable.

so lets say you do

a = 1

What this means in python is: create an object of type int having value 1 and bind the name a to it. The object is an instance of int having value 1, and the name a refers to it. The name a and the object to which it refers are distinct.

Now lets say you do

a += 1

Since ints are immutable, what happens here is as follows:

1. look up the object that a refers to (it is an int with id 0x559239eeb380)
2. look up the value of object 0x559239eeb380 (it is 1)
3. add 1 to that value (1 + 1 = 2)
4. create a new int object with value 2 (it has object id 0x559239eeb3a0)
5. rebind the name a to this new object
6. Now a refers to object 0x559239eeb3a0 and the original object (0x559239eeb380) is no longer refered to by the name a. If there aren't any other names refering to the original object it will be garbage collected later.

Give it a try yourself:

a = 1
print(hex(id(a)))
a += 1
print(hex(id(a)))

Session.Abandon()

This marks the session as Abandoned, but the session won't actually be Abandoned at that moment, the request has to complete first.

On Mac you need cmd + / to comment and uncomment.

The one important difference between Perforce and git (and the one most commonly mentioned) is their respective handling of huge binary files.

Like, for example, in this blog of an employee at a video game development company: http://corearchitecture.blogspot.com/2011/09/git-vs-perforce-from-game-development.html

However, the important thing is that, the speed difference between git and perforce, when you have a huge 6gb repository, containing everything from documentation to every binary ever built (and finally, oh yes! the actual source history), usually comes from the fact that huge companies tend to run Perforce, and so they set it up to offload all significant operations to the huge server bank in the basement.

This important advantage on Perforce's part comes only from a factor that has nothing whatsoever to do with Perforce, the fact that the company running it can afford said server bank.

And, anyway, in the end, Perforce and git are different products. Git was designed to be solely a VCS, and it does this far better than Perforce (in that it has more features, which are generally easier to use, in particular, in the words of another, branching in Perforce is like performing open-heart surgery, it should only be done by experts :P ) ( http://stevehanov.ca/blog/index.php?id=50 )

Any other benefits which companies that use Perforce gain have come merely because Perforce is not solely a VCS, it's also a fileserver, as well as having a host of other features for testing the performance of builds, etc.

Finally: Git being open-source and far more flexible to boot, it would not be so hard to patch git to offload important operations to a central server, running mounds of expensive hardware.

You simply can't do that in SQL. You have to explicitly list the fields and concat each one:

SELECT CONCAT(field1, '/'), CONCAT(field2, '/'), ... FROM `socials` WHERE 1

If you are using an app, you can use SQL to read the column names, and then use your app to construct a query like above. See this stackoverflow question to find the column names: Get table column names in mysql?

The simplest option is to use a global variable. Then create a function that gets the current word.

current_word = ''
def oneFunction(lists):
    global current_word
    word=random.choice(lists[category])
    current_word = word

def anotherFunction():
    for letter in get_word():              
          print("_",end=" ")

 def get_word():
      return current_word

The advantage of this is that maybe your functions are in different modules and need to access the variable.

• Context Menu key (one one with the menu on it, next to the right Windows key)
• Then choose "Resolve" from the menu. That can be done by pressing "s".

I'm using HybridAuth and was running into this error connecting to Twitter. I tracked it down to (me) sending Twitter an incorrectly cased request type (get/post instead of GET/POST).

This would cause a 215:

$call = '/search/tweets.json';
$call_type = 'get';
$call_args = array(
    'q'           => 'pancakes',
    'count'       => 5,
);
$response = $provider_api->api( $call, $call_type, $call_args );

This would not:

$call = '/search/tweets.json';
$call_type = 'GET';
$call_args = array(
    'q'           => 'pancakes',
    'count'       => 5,
);
$response = $provider_api->api( $call, $call_type, $call_args );

Side note: In the case of HybridAuth the following also would not (because HA internally provides the correctly-cased value for the request type):

$call = '/search/tweets.json';
$call_args = array(
    'q'           => 'pancakes',
    'count'       => 5,
);
$response = $providers['Twitter']->get( $call, $call_args );

I realize that this is an old question, with an established answer. The reason I'm posting is that is the accepted answer has many elements of k-NN (k-nearest neighbors), a different algorithm.

Both k-NN and NaiveBayes are classification algorithms. Conceptually, k-NN uses the idea of "nearness" to classify new entities. In k-NN 'nearness' is modeled with ideas such as Euclidean Distance or Cosine Distance. By contrast, in NaiveBayes, the concept of 'probability' is used to classify new entities.

Since the question is about Naive Bayes, here's how I'd describe the ideas and steps to someone. I'll try to do it with as few equations and in plain English as much as possible.

First, Conditional Probability & Bayes' Rule

Before someone can understand and appreciate the nuances of Naive Bayes', they need to know a couple of related concepts first, namely, the idea of Conditional Probability, and Bayes' Rule. (If you are familiar with these concepts, skip to the section titled Getting to Naive Bayes')

Conditional Probability in plain English: What is the probability that something will happen, given that something else has already happened.

Let's say that there is some Outcome O. And some Evidence E. From the way these probabilities are defined: The Probability of having both the Outcome O and Evidence E is: (Probability of O occurring) multiplied by the (Prob of E given that O happened)

One Example to understand Conditional Probability:

Let say we have a collection of US Senators. Senators could be Democrats or Republicans. They are also either male or female.

If we select one senator completely randomly, what is the probability that this person is a female Democrat? Conditional Probability can help us answer that.

Probability of (Democrat and Female Senator)= Prob(Senator is Democrat) multiplied by Conditional Probability of Being Female given that they are a Democrat.

  P(Democrat & Female) = P(Democrat) * P(Female | Democrat) 

We could compute the exact same thing, the reverse way:

  P(Democrat & Female) = P(Female) * P(Democrat | Female) 

Understanding Bayes Rule

Conceptually, this is a way to go from P(Evidence| Known Outcome) to P(Outcome|Known Evidence). Often, we know how frequently some particular evidence is observed, given a known outcome. We have to use this known fact to compute the reverse, to compute the chance of that outcome happening, given the evidence.

P(Outcome given that we know some Evidence) = P(Evidence given that we know the Outcome) times Prob(Outcome), scaled by the P(Evidence)

The classic example to understand Bayes' Rule:

Probability of Disease D given Test-positive = 

               P(Test is positive|Disease) * P(Disease)
     _______________________________________________________________
     (scaled by) P(Testing Positive, with or without the disease)

Now, all this was just preamble, to get to Naive Bayes.

Getting to Naive Bayes'

So far, we have talked only about one piece of evidence. In reality, we have to predict an outcome given multiple evidence. In that case, the math gets very complicated. To get around that complication, one approach is to 'uncouple' multiple pieces of evidence, and to treat each of piece of evidence as independent. This approach is why this is called naive Bayes.

P(Outcome|Multiple Evidence) = 
P(Evidence1|Outcome) * P(Evidence2|outcome) * ... * P(EvidenceN|outcome) * P(Outcome)
scaled by P(Multiple Evidence)

Many people choose to remember this as:

                      P(Likelihood of Evidence) * Prior prob of outcome
P(outcome|evidence) = _________________________________________________
                                         P(Evidence)

Notice a few things about this equation:

• If the Prob(evidence|outcome) is 1, then we are just multiplying by 1.
• If the Prob(some particular evidence|outcome) is 0, then the whole prob. becomes 0. If you see contradicting evidence, we can rule out that outcome.
• Since we divide everything by P(Evidence), we can even get away without calculating it.
• The intuition behind multiplying by the prior is so that we give high probability to more common outcomes, and low probabilities to unlikely outcomes. These are also called base rates and they are a way to scale our predicted probabilities.

How to Apply NaiveBayes to Predict an Outcome?

Just run the formula above for each possible outcome. Since we are trying to classify, each outcome is called a class and it has a class label. Our job is to look at the evidence, to consider how likely it is to be this class or that class, and assign a label to each entity. Again, we take a very simple approach: The class that has the highest probability is declared the "winner" and that class label gets assigned to that combination of evidences.

Fruit Example

Let's try it out on an example to increase our understanding: The OP asked for a 'fruit' identification example.

Let's say that we have data on 1000 pieces of fruit. They happen to be Banana, Orange or some Other Fruit. We know 3 characteristics about each fruit:

1. Whether it is Long
2. Whether it is Sweet and
3. If its color is Yellow.

This is our 'training set.' We will use this to predict the type of any new fruit we encounter.

Type           Long | Not Long || Sweet | Not Sweet || Yellow |Not Yellow|Total
             ___________________________________________________________________
Banana      |  400  |    100   || 350   |    150    ||  450   |  50      |  500
Orange      |    0  |    300   || 150   |    150    ||  300   |   0      |  300
Other Fruit |  100  |    100   || 150   |     50    ||   50   | 150      |  200
            ____________________________________________________________________
Total       |  500  |    500   || 650   |    350    ||  800   | 200      | 1000
             ___________________________________________________________________

We can pre-compute a lot of things about our fruit collection.

The so-called "Prior" probabilities. (If we didn't know any of the fruit attributes, this would be our guess.) These are our base rates.

 P(Banana)      = 0.5 (500/1000)
 P(Orange)      = 0.3
 P(Other Fruit) = 0.2

Probability of "Evidence"

p(Long)   = 0.5
P(Sweet)  = 0.65
P(Yellow) = 0.8

Probability of "Likelihood"

P(Long|Banana) = 0.8
P(Long|Orange) = 0  [Oranges are never long in all the fruit we have seen.]
 ....

P(Yellow|Other Fruit)     =  50/200 = 0.25
P(Not Yellow|Other Fruit) = 0.75

Given a Fruit, how to classify it?

Let's say that we are given the properties of an unknown fruit, and asked to classify it. We are told that the fruit is Long, Sweet and Yellow. Is it a Banana? Is it an Orange? Or Is it some Other Fruit?

We can simply run the numbers for each of the 3 outcomes, one by one. Then we choose the highest probability and 'classify' our unknown fruit as belonging to the class that had the highest probability based on our prior evidence (our 1000 fruit training set):

P(Banana|Long, Sweet and Yellow) 
      P(Long|Banana) * P(Sweet|Banana) * P(Yellow|Banana) * P(banana)
    = _______________________________________________________________
                      P(Long) * P(Sweet) * P(Yellow)
                      
    = 0.8 * 0.7 * 0.9 * 0.5 / P(evidence)

    = 0.252 / P(evidence)


P(Orange|Long, Sweet and Yellow) = 0


P(Other Fruit|Long, Sweet and Yellow)
      P(Long|Other fruit) * P(Sweet|Other fruit) * P(Yellow|Other fruit) * P(Other Fruit)
    = ____________________________________________________________________________________
                                          P(evidence)

    = (100/200 * 150/200 * 50/200 * 200/1000) / P(evidence)

    = 0.01875 / P(evidence)

By an overwhelming margin (0.252 >> 0.01875), we classify this Sweet/Long/Yellow fruit as likely to be a Banana.

Why is Bayes Classifier so popular?

Look at what it eventually comes down to. Just some counting and multiplication. We can pre-compute all these terms, and so classifying becomes easy, quick and efficient.

Let z = 1 / P(evidence). Now we quickly compute the following three quantities.

P(Banana|evidence) = z * Prob(Banana) * Prob(Evidence1|Banana) * Prob(Evidence2|Banana) ...
P(Orange|Evidence) = z * Prob(Orange) * Prob(Evidence1|Orange) * Prob(Evidence2|Orange) ...
P(Other|Evidence)  = z * Prob(Other)  * Prob(Evidence1|Other)  * Prob(Evidence2|Other)  ...

Assign the class label of whichever is the highest number, and you are done.

Despite the name, Naive Bayes turns out to be excellent in certain applications. Text classification is one area where it really shines.

Hope that helps in understanding the concepts behind the Naive Bayes algorithm.

I've experienced a problem with length of None, which leads to Internal Server Error: TypeError: object of type 'NoneType' has no len()

My workaround is just displaying 0 if object is None and calculate length of other types, like list in my case:

{{'0' if linked_contacts == None else linked_contacts|length}}

Working example:

    Intent intent = new Intent(ctx, HomeActivity.class);
    PendingIntent contentIntent = PendingIntent.getActivity(ctx, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);

    NotificationCompat.Builder b = new NotificationCompat.Builder(ctx);

    b.setAutoCancel(true)
     .setDefaults(Notification.DEFAULT_ALL)
     .setWhen(System.currentTimeMillis())         
     .setSmallIcon(R.drawable.ic_launcher)
     .setTicker("Hearty365")            
     .setContentTitle("Default notification")
     .setContentText("Lorem ipsum dolor sit amet, consectetur adipiscing elit.")
     .setDefaults(Notification.DEFAULT_LIGHTS| Notification.DEFAULT_SOUND)
     .setContentIntent(contentIntent)
     .setContentInfo("Info");


    NotificationManager notificationManager = (NotificationManager) ctx.getSystemService(Context.NOTIFICATION_SERVICE);
    notificationManager.notify(1, b.build());

EditText editText= ....;
InputFilter[] fa= new InputFilter[1];
fa[0] = new InputFilter.LengthFilter(8);
editText.setFilters(fa);

You could try turning that array into a associative array with the fruits as keys and the number of occurrences as values. Bit long-winded, but it looks like:

$array = array('apple', 'orange', 'pear', 'banana', 'apple',
   'pear', 'kiwi', 'kiwi', 'kiwi');
$new_array = array();
foreach ($array as $key => $value) {
    if(isset($new_array[$value]))
        $new_array[$value] += 1;
    else
        $new_array[$value] = 1;
}
foreach ($new_array as $fruit => $n) {
    echo $fruit;
    if($n > 1)
        echo "($n)";
    echo "<br />";
}

You need to convert the date format from OLE Automation to the .net format by using DateTime.FromOADate.

double d = double.Parse(b);
DateTime conv = DateTime.FromOADate(d);

You have an extra -c you need to get rid of:

psexec -u administrator -p force \\135.20.230.160 -s -d cmd.exe /c "C:\Amitra\bogus.bat"

I will just leave it here, just rewrote the code above using numpy, maybe somebody finds it useful:

def ray_tracing_numpy(x,y,poly):
    n = len(poly)
    inside = np.zeros(len(x),np.bool_)
    p2x = 0.0
    p2y = 0.0
    xints = 0.0
    p1x,p1y = poly[0]
    for i in range(n+1):
        p2x,p2y = poly[i % n]
        idx = np.nonzero((y > min(p1y,p2y)) & (y <= max(p1y,p2y)) & (x <= max(p1x,p2x)))[0]
        if p1y != p2y:
            xints = (y[idx]-p1y)*(p2x-p1x)/(p2y-p1y)+p1x
        if p1x == p2x:
            inside[idx] = ~inside[idx]
        else:
            idxx = idx[x[idx] <= xints]
            inside[idxx] = ~inside[idxx]    

        p1x,p1y = p2x,p2y
    return inside    

Wrapped ray_tracing into

def ray_tracing_mult(x,y,poly):
    return [ray_tracing(xi, yi, poly[:-1,:]) for xi,yi in zip(x,y)]

Tested on 100000 points, results:

ray_tracing_mult 0:00:00.850656
ray_tracing_numpy 0:00:00.003769

Why haven't you tried httplib.HTTPSConnection? It doesn't do SSL validation but this isn't required to connect over https. Your code works fine with https connection:

>>> import httplib
>>> conn = httplib.HTTPSConnection("mail.google.com")
>>> conn.request("GET", "/")
>>> r1 = conn.getresponse()
>>> print r1.status, r1.reason
200 OK

I know there is already an answer to this but I just found a better solution using the variableWidth parameter, just set it to true in the settings of each breakpoint, like this:

$('#featured-articles').slick({
  arrows: true,
  autoplay: true,
  autoplaySpeed: 3000,
  dots: true,
  draggable: false,
  fade: true,
  infinite: false,
  responsive: [
  {
    breakpoint: 620,
    settings: {
        arrows: true,
        variableWidth: true
    }
  },
  {
    breakpoint: 345,
    settings: {
        arrows: true,
        variableWidth: true
    }
  }
  ]
});

This typically occurs when there is unintended output from the script before you start the session. With your current code, you could try to use output buffering to solve it.

try adding a call to the ob_start(); function at the very top of your script and ob_end_flush(); at the very end of the document.

Check if you are implementing the code inside a could drive like box, dropbox etc. If you copy the files you are trying to implement to a local folder on your machine you should be able to get rid of the error.

Add gesture on that view. Add an image into that view, and then it would be detecting a gesture on the image too. You could try with the delegate method of the touch event. Then in that case it also might be detecting.

This is commonly referred to as the conditional operator, and when used like this:

condition ? result_if_true : result_if_false

... if the condition evaluates to true, the expression evaluates to result_if_true, otherwise it evaluates to result_if_false.

It is syntactic sugar, and in this case, it can be replaced with

int qempty()
{ 
  if(f == r)
  {
      return 1;
  } 
  else 
  {
      return 0;
  }
}

Note: Some people refer to ?: it as "the ternary operator", because it is the only ternary operator (i.e. operator that takes three arguments) in the language they are using.

Using logging.basicConfig, the following example works for me:

logging.basicConfig(
    filename='HISTORYlistener.log',
    level=logging.DEBUG,
    format='%(asctime)s.%(msecs)03d %(levelname)s %(module)s - %(funcName)s: %(message)s',
    datefmt='%Y-%m-%d %H:%M:%S',
)

This allows you to format & config all in one line. A resulting log record looks as follows:

2014-05-26 12:22:52.376 CRITICAL historylistener - main: History log failed to start

If you are using phpmyadmin then just go to the table structure

e.g.

Space usage
Data    1.5 MiB
Index   0   B
Total   1.5 Mi

Yes, here is an example in jsfiddle: http://jsfiddle.net/bfQeJ/

Highcharts.setOptions({
    colors: ['#058DC7', '#50B432', '#ED561B', '#DDDF00', '#24CBE5', '#64E572', '#FF9655', '#FFF263', '#6AF9C4']
});

The example is a pie chart but you can just fill the series with all the colors to your heart's content =)

I have seen exactly the same error, also with IE11. In my case the issue occurred when user clicked <button> element, which was inside <form> tags.

The issue was remedied, by placing the <button> outside of <form> tags.

I wrote two programs:

int main(){return 0;}

and

#include <stdlib.h>
int main(){exit(0)}

After executing gcc -S -O1. Here what I found watching at assembly (only important parts):

main:
    movl    $0, %eax    /* setting return value */
    ret                 /* return from main */

and

main:
    subq    $8, %rsp    /* reserving some space */
    movl    $0, %edi    /* setting return value */
    call    exit        /* calling exit function */
                        /* magic and machine specific wizardry after this call */

So my conclusion is: use return when you can, and exit() when you need.

You'll need to send the image back base64 encoded, look at this: http://php.net/manual/en/function.base64-encode.php

Then in your ajax call change the success function to this:

$('.div_imagetranscrits').html('<img src="data:image/png;base64,' + data + '" />');

You can call $setUnion on a single array, which also filters dupes:

{ $project: {Package: 1, deps: {'$setUnion': '$deps.Package'}}}

There is a JSONObject constructor to turn a String into a JSONObject:

http://developer.android.com/reference/org/json/JSONObject.html#JSONObject(java.lang.String)

To change database owner:

ALTER AUTHORIZATION ON DATABASE::YourDatabaseName TO sa

As of SQL Server 2014 you can still use sp_changedbowner as well, even though Microsoft promised to remove it in the "future" version after SQL Server 2012. They removed it from SQL Server 2014 BOL though.

Step by step explanation how to make it work :

1- First create a python file according to the basic skeleton mentioned above. And save it to a path for example : "c:\PythonFiles\AppServerSvc.py"

import win32serviceutil
import win32service
import win32event
import servicemanager
import socket


class AppServerSvc (win32serviceutil.ServiceFramework):
    _svc_name_ = "TestService"
    _svc_display_name_ = "Test Service"


    def __init__(self,args):
        win32serviceutil.ServiceFramework.__init__(self,args)
        self.hWaitStop = win32event.CreateEvent(None,0,0,None)
        socket.setdefaulttimeout(60)

    def SvcStop(self):
        self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING)
        win32event.SetEvent(self.hWaitStop)

    def SvcDoRun(self):
        servicemanager.LogMsg(servicemanager.EVENTLOG_INFORMATION_TYPE,
                          servicemanager.PYS_SERVICE_STARTED,
                          (self._svc_name_,''))
        self.main()

    def main(self):
        # Your business logic or call to any class should be here
        # this time it creates a text.txt and writes Test Service in a daily manner 
        f = open('C:\\test.txt', 'a')
        rc = None
        while rc != win32event.WAIT_OBJECT_0:
            f.write('Test Service  \n')
            f.flush()
            # block for 24*60*60 seconds and wait for a stop event
            # it is used for a one-day loop
            rc = win32event.WaitForSingleObject(self.hWaitStop, 24 * 60 * 60 * 1000)
        f.write('shut down \n')
        f.close()

if __name__ == '__main__':
    win32serviceutil.HandleCommandLine(AppServerSvc)

2 - On this step we should register our service.

Run command prompt as administrator and type as:

sc create TestService binpath= "C:\Python36\Python.exe c:\PythonFiles\AppServerSvc.py" DisplayName= "TestService" start= auto

the first argument of binpath is the path of python.exe

second argument of binpath is the path of your python file that we created already

Don't miss that you should put one space after every "=" sign.

Then if everything is ok, you should see

[SC] CreateService SUCCESS

Now your python service is installed as windows service now. You can see it in Service Manager and registry under :

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\TestService

3- Ok now. You can start your service on service manager.

You can execute every python file that provides this service skeleton.

You are running your HTML from a different host than the host you are requesting. Because of this, you are getting blocked by the same origin policy.

One way around this is to use JSONP. This allows cross-site requests.

In JSON, you are returned:

{a: 5, b: 6}

In JSONP, the JSON is wrapped in a function call, so it becomes a script, and not an object.

callback({a: 5, b: 6})

You need to edit your REST service to accept a parameter called callback, and then to use the value of that parameter as the function name. You should also change the content-type to application/javascript.

For example: http://localhost:8080/restws/json/product/get?callback=process should output:

process({a: 5, b: 6})

In your JavaScript, you will need to tell jQuery to use JSONP. To do this, you need to append ?callback=? to the URL.

$.getJSON("http://localhost:8080/restws/json/product/get?callback=?",
   function(data) {
     alert(data);         
   });

If you use $.ajax, it will auto append the ?callback=? if you tell it to use jsonp.

$.ajax({ 
   type: "GET",
   dataType: "jsonp",
   url: "http://localhost:8080/restws/json/product/get",
   success: function(data){        
     alert(data);
   }
});

You are just using a single parameter inside the function hence it is working fine in both the cases like follows:

MsgBox "Hello world!"
MsgBox ("Hello world!")

But when you'll use more than one parameter, In VBScript method will parenthesis will throw an error and without parenthesis will work fine like:

MsgBox "Hello world!", vbExclamation

The above code will run smoothly but

MsgBox ("Hello world!", vbExclamation)

will throw an error. Try this!! :-)

If you want a preset number of columns, you can use column-count and column-gap, as mentioned above.

However, if you want a single column with limited height that would break into more columns if needed, this can be achieved quite simply by changing display to flex.

This will not work on IE9 and some other old browsers. You can check support on Can I use

<style>_x000D_
  ul {_x000D_
    display: -ms-flexbox;           /* IE 10 */_x000D_
    display: -webkit-flex;          /* Safari 6.1+. iOS 7.1+ */_x000D_
    display: flex;_x000D_
    -webkit-flex-flow: wrap column; /* Safari 6.1+ */_x000D_
    flex-flow: wrap column;_x000D_
    max-height: 150px;              /* Limit height to whatever you need */_x000D_
  }_x000D_
</style>_x000D_
_x000D_
<ul>_x000D_
    <li>Item</li>_x000D_
    <li>Item</li>_x000D_
    <li>Item</li>_x000D_
    <li>Item</li>_x000D_
    <li>Item</li>_x000D_
    <li>Item</li>_x000D_
    <li>Item</li>_x000D_
    <li>Item</li>_x000D_
    <li>Item</li>_x000D_
    <li>Item</li>_x000D_
</ul>

As unwind noted, keyword arguments with default values can go a long way.

I'll also state that in my opinion, it goes against the spirit of Python to worry a lot about what types are passed into methods. In Python, I think it's more accepted to use duck typing -- asking what an object can do, rather than what it is.

Thus, if your method may accept a string or a tuple, you might do something like this:

def print_names(names):
    """Takes a space-delimited string or an iterable"""
    try:
        for name in names.split(): # string case
            print name
    except AttributeError:
        for name in names:
            print name

Then you could do either of these:

print_names("Ryan Billy")
print_names(("Ryan", "Billy"))

Although an API like that sometimes indicates a design problem.

According to http://khason.net/blog/how-to-use-systemdrawingbitmap-hbitmap-in-wpf/

   [DllImport("gdi32")]
   static extern int DeleteObject(IntPtr o);

   public static BitmapSource loadBitmap(System.Drawing.Bitmap source)
   {
       IntPtr ip = source.GetHbitmap();
       BitmapSource bs = null;
       try
       {
           bs = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(ip, 
              IntPtr.Zero, Int32Rect.Empty, 
              System.Windows.Media.Imaging.BitmapSizeOptions.FromEmptyOptions());
       }
       finally
       {
           DeleteObject(ip);
       }

       return bs;
   }

It gets System.Drawing.Bitmap (from WindowsBased) and converts it into BitmapSource, which can be actually used as image source for your Image control in WPF.

image1.Source = YourUtilClass.loadBitmap(SomeBitmap);

My experience shows that the -o option doesn't work properly and that the go-offline goal is far from sufficient to allow a full offline build:

The solution I could validate includes the use of the --legacy-local-repository maven option rather than the -o (offline) one and the use of the local repository in place of the distribution repository

In addition, I had to copy every maven-metadata-maven2_central.xml files of the local-repo into the maven-metadata.xml form expected by maven.

See the solution I found here.

We can use splatting for this:

& $command @args

where @args (automatic variable $args) is splatted into array of parameters.

Under PS, 5.1

On Python 3 you can use the itertools islice to slice the dict.items() iterator

import itertools

d = {1: 2, 3: 4, 5: 6}

dict(itertools.islice(d.items(), 2))

{1: 2, 3: 4}

Note: this solution does not take into account specific keys. It slices by internal ordering of d, which in Python 3.7+ is guaranteed to be insertion-ordered.

Is very easy, you just need to use method_field('PUT') like this:

HTML:

<form action="{{ route('route_name') }}" method="post">
    {{ method_field('PUT') }}
    {{ csrf_field() }}
</form>

or

<form action="{{ route('route_name') }}" method="post">
    <input type="hidden" name="_method" value="PUT">
    <input type="hidden" name="_token" value="{{ csrf_token() }}">
</form>

Regards!

There is huge difference between onChange and onTextChange prop of <TextInput />. Don't be like me and use onTextChange which returns string and don't use onChange which returns full objects.

I feel dumb for spending like 1 hour figuring out where is my value.

I try all solutions inside this topic on this time. But all of them did not work correctly on devices with one external (removable) and one internal (not-removable) cards. Path of external card not possible get from 'mount' command, from 'proc/mounts' file etc.

And I create my own solution (on Paulo Luan's):

String sSDpath = null;
File   fileCur = null;
for( String sPathCur : Arrays.asList( "ext_card", "external_sd", "ext_sd", "external", "extSdCard",  "externalSdCard")) // external sdcard
{
   fileCur = new File( "/mnt/", sPathCur);
   if( fileCur.isDirectory() && fileCur.canWrite())
   {
     sSDpath = fileCur.getAbsolutePath();
     break;
   }
}
fileCur = null;
if( sSDpath == null)  sSDpath = Environment.getExternalStorageDirectory().getAbsolutePath();

ParseExact is told the format of the date it is expected to parse, not the format you wish to get out.

$invoice = '01-Jul-16'
[datetime]::parseexact($invoice, 'dd-MMM-yy', $null)

If you then wish to output a date string:

[datetime]::parseexact($invoice, 'dd-MMM-yy', $null).ToString('yyyy-MM-dd')

Chris

You can also make use of until command:

until ((0)); do foo; sleep 2; done

Note that in contrast to while, until would execute the commands inside the loop as long as the test condition has an exit status which is not zero.

Using a while loop:

while read i; do foo; sleep 2; done < /dev/urandom

Using a for loop:

for ((;;)); do foo; sleep 2; done

Another way using until:

until [ ]; do foo; sleep 2; done

 48 lapply_install_and_load <- function (package1, ...)
 49 {
 50     #
 51     # convert arguments to vector
 52     #
 53     packages <- c(package1, ...)
 54     #
 55     # check if loaded and installed
 56     #
 57     loaded        <- packages %in% (.packages())
 58     names(loaded) <- packages
 59     #
 60     installed        <- packages %in% rownames(installed.packages())
 61     names(installed) <- packages
 62     #
 63     # start loop to determine if each package is installed
 64     #
 65     load_it <- function (p, loaded, installed)
 66     {
 67         if (loaded[p])
 68         {
 69             print(paste(p, "loaded"))
 70         }
 71         else
 72         {
 73             print(paste(p, "not loaded"))
 74             if (installed[p])
 75             {
 76                 print(paste(p, "installed"))
 77                 do.call("library", list(p))
 78             }
 79             else
 80             {
 81                 print(paste(p, "not installed"))
 82                 install.packages(p)
 83                 do.call("library", list(p))
 84             }
 85         }
 86     }
 87     #
 88     lapply(packages, load_it, loaded, installed)
 89 }

In npm 6.x you can use

npm i --package-lock-only

According to https://docs.npmjs.com/cli/install.html

The --package-lock-only argument will only update the package-lock.json, instead of checking node_modules and downloading dependencies.

The CORS spec is all-or-nothing. It only supports *, null or the exact protocol + domain + port: http://www.w3.org/TR/cors/#access-control-allow-origin-response-header

Your server will need to validate the origin header using the regex, and then you can echo the origin value in the Access-Control-Allow-Origin response header.

I have two python version installed: 1. Python 3.8.2: This was installed independently 2. Python 3.7.6: This was installed along with Anaconda 3

Multiple versions caused conflict even after setting the path variables correctly.

I have uninstalled the Python 3.8.2 and after restart, the command

jupyter notebook

Worked perfectly :)

If others who view this question only have a JSON string (not in an object), then you can put it into a HashMap and still get the ObjectMapper to work. The result variable is your JSON string.

import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.util.HashMap;
import java.util.Map;

// Pretty-print the JSON result
try {
    ObjectMapper objectMapper = new ObjectMapper();
    Map<String, Object> response = objectMapper.readValue(result, HashMap.class);
    System.out.println(objectMapper.writerWithDefaultPrettyPrinter().writeValueAsString(response));
} catch (JsonParseException e) {
    e.printStackTrace();
} catch (JsonMappingException e) {
    e.printStackTrace();
} catch (IOException e) {
    e.printStackTrace();
} 

Use the UITableViewDataSource method

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section

Complete instructions on how to do this using the "jQuery-ajaxTransport-XDomainRequest" plugin can be found here: https://github.com/MoonScript/jQuery-ajaxTransport-XDomainRequest#instructions

This plugin is actively supported, and handles HTML, JSON and XML. The file is also hosted on CDNJS, so you can directly drop the script into your page with no additional setup: http://cdnjs.cloudflare.com/ajax/libs/jquery-ajaxtransport-xdomainrequest/1.0.1/jquery.xdomainrequest.min.js

If you use MVC 3 and .NET 4, you can use the new Display attribute in the System.ComponentModel.DataAnnotations namespace. This attribute replaces the DisplayName attribute and provides much more functionality, including localization support.

In your case, you would use it like this:

public class MyModel
{
    [Required]
    [Display(Name = "labelForName", ResourceType = typeof(Resources.Resources))]
    public string name{ get; set; }
}

As a side note, this attribute will not work with resources inside App_GlobalResources or App_LocalResources. This has to do with the custom tool (GlobalResourceProxyGenerator) these resources use. Instead make sure your resource file is set to 'Embedded resource' and use the 'ResXFileCodeGenerator' custom tool.

(As a further side note, you shouldn't be using App_GlobalResources or App_LocalResources with MVC. You can read more about why this is the case here)

var iframeInner = jQuery(iframe).find('iframe').contents();

var iframeContent = jQuery(iframeInner).contents().find('#element');

iframeInner contains elements from

<div id="element">other markup goes here</div> 

and iframeContent will find for elements which are inside of

 <div id="element">other markup goes here</div> 

(find doesn't search on current element) that's why it is returning null.

There is the data.table approach for an inner join, which is very time and memory efficient (and necessary for some larger data.frames):

library(data.table)

dt1 <- data.table(df1, key = "CustomerId") 
dt2 <- data.table(df2, key = "CustomerId")

joined.dt1.dt.2 <- dt1[dt2]

merge also works on data.tables (as it is generic and calls merge.data.table)

merge(dt1, dt2)

data.table documented on stackoverflow:
How to do a data.table merge operation
Translating SQL joins on foreign keys to R data.table syntax
Efficient alternatives to merge for larger data.frames R
How to do a basic left outer join with data.table in R?

Yet another option is the join function found in the plyr package

library(plyr)

join(df1, df2,
     type = "inner")

#   CustomerId Product   State
# 1          2 Toaster Alabama
# 2          4   Radio Alabama
# 3          6   Radio    Ohio

Options for type: inner, left, right, full.

From ?join: Unlike merge, [join] preserves the order of x no matter what join type is used.

More or less same as above but concurrent using gevent :)

"""Gevent based crontab implementation"""

from datetime import datetime, timedelta
import gevent

# Some utility classes / functions first
def conv_to_set(obj):
    """Converts to set allowing single integer to be provided"""

    if isinstance(obj, (int, long)):
        return set([obj])  # Single item
    if not isinstance(obj, set):
        obj = set(obj)
    return obj

class AllMatch(set):
    """Universal set - match everything"""
    def __contains__(self, item): 
        return True

allMatch = AllMatch()

class Event(object):
    """The Actual Event Class"""

    def __init__(self, action, minute=allMatch, hour=allMatch, 
                       day=allMatch, month=allMatch, daysofweek=allMatch, 
                       args=(), kwargs={}):
        self.mins = conv_to_set(minute)
        self.hours = conv_to_set(hour)
        self.days = conv_to_set(day)
        self.months = conv_to_set(month)
        self.daysofweek = conv_to_set(daysofweek)
        self.action = action
        self.args = args
        self.kwargs = kwargs

    def matchtime(self, t1):
        """Return True if this event should trigger at the specified datetime"""
        return ((t1.minute     in self.mins) and
                (t1.hour       in self.hours) and
                (t1.day        in self.days) and
                (t1.month      in self.months) and
                (t1.weekday()  in self.daysofweek))

    def check(self, t):
        """Check and run action if needed"""

        if self.matchtime(t):
            self.action(*self.args, **self.kwargs)

class CronTab(object):
    """The crontab implementation"""

    def __init__(self, *events):
        self.events = events

    def _check(self):
        """Check all events in separate greenlets"""

        t1 = datetime(*datetime.now().timetuple()[:5])
        for event in self.events:
            gevent.spawn(event.check, t1)

        t1 += timedelta(minutes=1)
        s1 = (t1 - datetime.now()).seconds + 1
        print "Checking again in %s seconds" % s1
        job = gevent.spawn_later(s1, self._check)

    def run(self):
        """Run the cron forever"""

        self._check()
        while True:
            gevent.sleep(60)

import os 
def test_task():
    """Just an example that sends a bell and asd to all terminals"""

    os.system('echo asd | wall')  

cron = CronTab(
  Event(test_task, 22, 1 ),
  Event(test_task, 0, range(9,18,2), daysofweek=range(0,5)),
)
cron.run()

Can you provide some more details like which linux you are using? Are you loged in as root? On linux you have to run export CLASSPATH = %path%;LOG4J_HOME/og4j-1.2.16.jar If you want it permanent then you can add above lines in ~/.bashrc file.

You should not calculate speed from position change per time. GPS may have inaccurate positions, but it has accurate speed (above 5km/h). So use the speed from GPS location stamp. And further you should not do that with course, although it works most of the times.

GPS positions, as delivered, are already Kalman filtered, you probably cannot improve, in postprocessing usually you have not the same information like the GPS chip.

You can smooth it, but this also introduces errors.

Just make sure that your remove the positions when the device stands still, this removes jumping positions, that some devices/Configurations do not remove.

you can get using key value something like this :

var size = new Array("S", "M", "L", "XL", "XXL");
var color = new Array("Red", "Blue", "Green", "White", "Black");
var options = new Array(size, color);

var len = options.length;
for(var i = 0; i<len; i++)
{  
 for(var key in options[i])
    {
       alert(options[i][key])
    }

}

see here : http://jsfiddle.net/8hmRk/8/

You can do it without setlocal, because of the setlocal command the variable won't survive an endlocal because it was created in setlocal. In this way the variable will be defined the right way.

To do that use this code:

set var1=A

set var2=B

set AB=hi

call set newvar=%%%var1%%var2%%%

echo %newvar% 

Note: You MUST use call before you set the variable or it won't work.

DateTime.DaysInMonth(DateTime.Now.Year, DateTime.Now.Month)

the reason of the exception has been explained already, however the suggested solution isn't really the best.

You should create a class that keeps a Scanner as private using Singleton Pattern, that makes that scanner unique on your code.

Then you can implement the methods you need or you can create a getScanner ( not recommended ) and you can control it with a private boolean, something like alreadyClosed.

If you are not aware how to use Singleton Pattern, here's a example:

public class Reader {
    
    
    private Scanner reader;
    private static Reader singleton = null;
    private boolean alreadyClosed;
    
    private Reader() {
        alreadyClosed = false;
        reader = new Scanner(System.in);
    }
    
    public static Reader getInstance() {
        if(singleton == null) {
            singleton = new Reader();
        }
        return singleton;
    }
    
    public int nextInt() throws AlreadyClosedException {
        if(!alreadyClosed) {
            return reader.nextInt();
        }
        throw new AlreadyClosedException(); //Custom exception
    }
    
    public double nextDouble() throws AlreadyClosedException {
        if(!alreadyClosed) {
            return reader.nextDouble();
        }
        throw new AlreadyClosedException();
    }
    
    public String nextLine() throws AlreadyClosedException {
        if(!alreadyClosed) {
            return reader.nextLine();
        }
        throw new AlreadyClosedException();
    }
    
    public void close() {
        alreadyClosed = true;
        reader.close();
    }   
}

Java 9 introduces

ifPresentOrElse if a value is present, performs the given action with the value, otherwise performs the given empty-based action.

See excellent Optional in Java 8 cheat sheet.

It provides all answers for most use cases.

Short summary below

ifPresent() - do something when Optional is set

opt.ifPresent(x -> print(x)); 
opt.ifPresent(this::print);

filter() - reject (filter out) certain Optional values.

opt.filter(x -> x.contains("ab")).ifPresent(this::print);

map() - transform value if present

opt.map(String::trim).filter(t -> t.length() > 1).ifPresent(this::print);

orElse()/orElseGet() - turning empty Optional to default T

int len = opt.map(String::length).orElse(-1);
int len = opt.
    map(String::length).
    orElseGet(() -> slowDefault());     //orElseGet(this::slowDefault)

orElseThrow() - lazily throw exceptions on empty Optional

opt.
filter(s -> !s.isEmpty()).
map(s -> s.charAt(0)).
orElseThrow(IllegalArgumentException::new);

May help to someone:

I'm sending data from react application to golang server.

Once I change this, w.Header().Set("Access-Control-Allow-Origin", "*"). Error has fixed.

React form submit function:

async handleSubmit(e) {
    e.preventDefault();

    const headers = {
        'Content-Type': 'text/plain'
    };

    await axios.post(
        'http://localhost:3001/login',
        {
            user_name: this.state.user_name,
            password: this.state.password,
        },
        {headers}
        ).then(response => {
            console.log("Success ========>", response);
        })
        .catch(error => {
            console.log("Error ========>", error);
        }
    )
}

Go server got Router,

func main()  {
    router := mux.NewRouter()

    router.HandleFunc("/login", Login.Login).Methods("POST")

    log.Fatal(http.ListenAndServe(":3001", router))
}

Login.go,

func Login(w http.ResponseWriter, r *http.Request)  {

    var user = Models.User{}
    data, err := ioutil.ReadAll(r.Body)

    if err == nil {
        err := json.Unmarshal(data, &user)
        if err == nil {
            user = Postgres.GetUser(user.UserName, user.Password)
            w.Header().Set("Access-Control-Allow-Origin", "*")
            json.NewEncoder(w).Encode(user)
        }
    }
}

With pandas version 0.16.1 and up, there is now a DataFrame.sample method built-in:

import pandas

df = pandas.DataFrame(pandas.np.random.random(100))

# Randomly sample 70% of your dataframe
df_percent = df.sample(frac=0.7)

# Randomly sample 7 elements from your dataframe
df_elements = df.sample(n=7)

For either approach above, you can get the rest of the rows by doing:

df_rest = df.loc[~df.index.isin(df_percent.index)]

net stop w32time
w32tm /config /syncfromflags:manual /manualpeerlist:"0.it.pool.ntp.org 1.it.pool.ntp.org 2.it.pool.ntp.org 3.it.pool.ntp.org"
net start w32time
w32tm /config /update
w32tm /resync /rediscover

.BAT Sample File: https://gist.github.com/thedom85/dbeb58627adfb3d5c3af

I also recommend this program: http://www.timesynctool.com/

Try this:

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

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

To complement the list, also be aware of http://mitmproxy.org/

Is there a preformance difference in Javascript between a switch statement and an if...else if....else?

I don't think so, switch is useful/short if you want prevent multiple if-else conditions.

Is the behavior of switch and if...else if...else different across browsers? (FireFox, IE, Chrome, Opera, Safari)

Behavior is same across all browsers :)

I store encoded HTML in the database.

Imho you should not store your data html-encoded in the database. Just store in plain text (not encoded) and just display your data like this and your html will be automatically encoded:

<div class='content'>
    @Model.Content
</div>

1. Pure POSIX shell and sponge:

   suffix=foobar
   while read l ; do printf '%s\n' "$l" "${suffix}" ; done < file | 
   sponge file
   

2. xargs and printf:

   suffix=foobar
   xargs -L 1 printf "%s${suffix}\n" < file | sponge file
   

3. Using join:

   suffix=foobar
   join file file -e "${suffix}" -o 1.1,2.99999 | sponge file
   

4. Shell tools using paste, yes, head & wc:

   suffix=foobar
   paste file <(yes "${suffix}" | head -$(wc -l < file) ) | sponge file
   

   Note that paste inserts a Tab char before $suffix.

Of course sponge can be replaced with a temp file, afterwards mv'd over the original filename, as with some other answers...

This is a well-known old question, but I'd like to share some more insights about modern programming language research and design.

Basic answer

Traditionally (in the sense of structured programming) and informally, a procedure is a reusable structural construct to have "input" and to do something programmable. When something is needed to be done within a procedure, you can provide (actual) arguments to the procedure in a procedure call coded in the source code (usually in a kind of an expression), and the actions coded in the procedures body (provided in the definition of the procedure) will be executed with the substitution of the arguments into the (formal) parameters used in the body.

A function is more than a procedure because return values can also be specified as the "output" in the body. Function calls are more or less same to procedure calls, except that you can also use the result of the function call, syntactically (usually as a subexpression of some other expression).

Traditionally, procedure calls (rather than function calls) are used to indicate that no output must be interested, and there must be side effects to avoid the call being no-ops, hence emphasizing the imperative programming paradigm. Many traditional programming languages like Pascal provide both "procedures" and "functions" to distinguish this intentional difference of styles.

(To be clear, the "input" and "output" mentioned above are simplified notions based on the syntactic properties of functions. Many languages additionally support passing arguments to parameters by reference/sharing, to allow users transporting information encoded in arguments during the calls. Such parameter may even be just called as "in/out parameter". This feature is based on the nature of the objects being passed in the calls, which is orthogonal to the properties of the feature of procedure/function.)

However, if the result of a function call is not needed, it can be just (at least logically) ignored, and function definitions/function calls should be consistent to procedure definitions/procedure calls in this way. ALGOL-like languages like C, C++ and Java, all provide the feature of "function" in this fashion: by encoding the result type void as a special case of functions looking like traditional procedures, there is no need to provide the feature of "procedures" separately. This prevents some bloat in the language design.

Since SICP is mentioned, it is also worth noting that in the Scheme language specified by RⁿRS, a procedure may or may not have to return the result of the computation. This is the union of the traditional "function" (returning the result) and "procedure" (returning nothing), essentially same to the "function" concept of many ALGOL-like languages (and actually sharing even more guarantees like applicative evaluations of the operands before the call). However, old-fashion differences still occur even in normative documents like SRFI-96.

I don't know much about the exact reasons behind the divergence, but as I have experienced, it seems that language designers will be happier without specification bloat nowadays. That is, "procedure" as a standalone feature is unnecessary. Techniques like void type is already sufficient to mark the use where side effects should be emphasized. This is also more natural to users having experiences on C-like languages, which are popular more than a few decades. Moreover, it avoids the embarrassment in cases like RⁿRS where "procedures" are actually "functions" in the broader sense.

In theory, a function can be specified with a specified unit type as the type of the function call result to indicate that result is special. This distinguishes the traditional procedures (where the result of a call is uninterested) from others. There are different styles in the design of a language:

• As in RⁿRS, just marking the uninterested results as "unspecified" value (of unspecified type, if the language has to mention it) and it is sufficient to be ignored.
• Specifying the uninterested result as the value of a dedicated unit type (e.g. Kernel's #inert) also works.
• When that type is a further a bottom type, it can be (hopefully) statically verified and prevented used as a type of expression. The void type in ALGOL-like languages is exactly an example of this technique. ISO C11's _Noreturn is a similar but more subtle one in this kind.

Further reading

As the traditional concept derived from math, there are tons of black magic most people do not bother to know. Strictly speaking, you won't be likely get the whole things clear as per your math books. CS books might not provide much help, either.

With concerning of programming languages, there are several caveats:

• Functions in different branches of math are not always defined having same meanings. Functions in different programming paradigms may also be quite different (even sometimes the syntaxes of function call look similar). Sometimes the reasons to cause the differences are same, but sometimes they are not.
  • It is idiomatic to model computation by mathematical functions and then implement the underlying computation in programming languages. Be careful to avoid mapping them one to one unless you know what are being talked about.
• Do not confuse the model with the entity be modeled.
  • The latter is only one of the implementation to the former. There can be more than one choices, depending on the contexts (the branches of math interested, for example).
  • In particular, it is more or less similarly absurd to treat "functions" as "mappings" or subsets of Cartesian products like to treat natural numbers as Von-Neumann encoding of ordinals (looking like a bunch of {{{}}, {}}...) besides some limited contexts.
• Mathematically, functions can be partial or total. Different programming languages have different treatment here.
  • Some functional languages may honor totality of functions to guarantee the computation within the function calls always terminate in finite steps. However, this is essentially not Turing-complete, hence weaker computational expressiveness, and not much seen in general-purpose languages besides semantics of typechecking (which is expected to be total).
  • If the difference between the procedures and functions is significant, should there be "total procedures"? Hmm...
• Constructs similar to functions in calculi used to model the general computation and the semantics of the programming languages (e.g. lambda abstractions in lambda calculi) can have different evaluation strategies on operands.
  • In traditional the reductions in pure calculi as well in as evaluations of expressions in pure functional languages, there are no side effects altering the results of the computations. As a result, operands are not required to be evaluated before the body of the functions-like constructs (because the invariant to define "same results" is kept by properties like ß-equivalence guaranteed by Church-Rosser property).
  • However, many programming languages may have side effects during the evaluations of expressions. That means, strict evaluation strategies like applicative evaluation are not the same to non-strict evaluation ones like call-by-need. This is significant, because without the distinction, there is no need to distinguish function-like (i.e. used with arguments) macros from (traditional) functions. But depending on the flavor of theories, this still can be an artifact. That said, in a broader sense, functional-like macros (esp. hygienic ones) are mathematical functions with some unnecessary limitations (syntactic phases). Without the limitations, it might be sane to treat (first-class) function-like macros as procedures...
  • For readers interested in this topic, consider some modern abstractions.
• Procedures are usually considered out of the scope of traditional math. However, in calculi modeling the computation and programming language semantics, as well as contemporary programming language designs, there can be quite a big family of related concepts sharing the "callable" nature. Some of them are used to implement/extend/replace procedures/functions. There are even more subtle distinctions.
  • Here are some related keywords: subroutines/(stackless/stackful) coroutines/(undelimited delimited) continuations... and even (unchecked) exceptions.

UPDATE My Answer here is now outdated. The Joda-Time project is now in maintenance mode, advising migration to the java.time classes. See the modern solution in the Answer by Ole V.V..

Joda-Time

The accepted answer by NidhishKrishnan is correct.

For fun, here is the same kind of code in Joda-Time 2.3.

// © 2013 Basil Bourque. This source code may be used freely forever by anyone taking full responsibility for doing so.
// import org.joda.time.*;
// import org.joda.time.format.*;

java.util.Date date = new Date(); // A Date object coming from other code.

// Pass the java.util.Date object to constructor of Joda-Time DateTime object.
DateTimeZone kolkataTimeZone = DateTimeZone.forID( "Asia/Kolkata" );
DateTime dateTimeInKolkata = new DateTime( date, kolkataTimeZone );

DateTimeFormatter formatter = DateTimeFormat.forPattern( "yyyy-MM-dd");
System.out.println( "dateTimeInKolkata formatted for date: " + formatter.print( dateTimeInKolkata ) );
System.out.println( "dateTimeInKolkata formatted for ISO 8601: " + dateTimeInKolkata );

When run…

dateTimeInKolkata formatted for date: 2013-12-17
dateTimeInKolkata formatted for ISO 8601: 2013-12-17T14:56:46.658+05:30

Using the php cURL libraries will probably be the right way to go, as this library has more features than the simple file_get_contents(...).

An example:

<?php
$ch = curl_init();
$headers = array('HTTP_ACCEPT: Something', 'HTTP_ACCEPT_LANGUAGE: fr, en, da, nl', 'HTTP_CONNECTION: Something');

curl_setopt($ch, CURLOPT_URL, "http://localhost"); # URL to post to
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1 ); # return into a variable
curl_setopt($ch, CURLOPT_HTTPHEADER, $header ); # custom headers, see above
$result = curl_exec( $ch ); # run!
curl_close($ch);
?>

We don't need to access the canvas context.

Implementing hednek in pure JS you would get canvas.setAttribute('style', 'background-color:#00F8'). But my preferred method requires converting the kabab-case to camelCase.

canvas.style.backgroundColor = '#00F8'

this way is a bit more flexible than using all():

my_list = [[1, 2, 0], [1, 2, 0], [1, 2, 0]]
all_zeros = False if False in [x[2] == 0 for x in my_list] else True
any_zeros = True if True in [x[2] == 0 for x in my_list] else False

or more succinctly:

all_zeros = not False in [x[2] == 0 for x in my_list]
any_zeros = 0 in [x[2] for x in my_list]

There are two ways to disable click outside of bootstrap model area to close modal-

1. using javascript

   $('#myModal').modal({
      backdrop: 'static',
      keyboard: false
   });
   

2. using data attribute in HTML tag

   data-backdrop="static" data-keyboard="false" //write this attributes in that button where you click to open the modal popup.
   

Arrays have an implicit member variable holding the length:

for(int i=0; i<myArray.length; i++) {
    System.out.println(myArray[i]);
}

Alternatively if using >=java5, use a for each loop:

for(Object o : myArray) {
    System.out.println(o);
}

I have hard time when trying to

• Create other db than admin
• Add new users and enable authentication to the db above

So I made 2020 answer here

My directory looks like this

+-- docker-compose.yml
+-- mongo-entrypoint
    +-- entrypoint.js

My docker-compose.yml looks like this

version: '3.4'
services:
  mongo-container:
    # If you need to connect to your db from outside this container 
    network_mode: host
    image: mongo:4.2
    environment:
        - MONGO_INITDB_ROOT_USERNAME=admin
        - MONGO_INITDB_ROOT_PASSWORD=pass
    ports:
      - "27017:27017"
    volumes:
      - "$PWD/mongo-entrypoint/:/docker-entrypoint-initdb.d/"
    command: mongod

Please change admin and pass with your need.

Inside mongo-entrypoint, I have entrypoint.js file with this content:

var db = connect("mongodb://admin:pass@localhost:27017/admin");

db = db.getSiblingDB('new_db'); // we can not use "use" statement here to switch db

db.createUser(
    {
        user: "user",
        pwd: "pass",
        roles: [ { role: "readWrite", db: "new_db"} ],
        passwordDigestor: "server",
    }
)

Here again you need to change admin:pass to your root mongo credentials in your docker-compose.yml that you stated before. In additional you need to change new_db, user, pass to your new database name and credentials that you need.

Now you can:

docker-compose up -d

And connect to this db from localhost, please note that I already have mongo cli, you can install it or you can exec to the container above to use mongo command:

mongo new_db -u user -p pass

Or you can connect from other computer

mongo host:27017/new_db -u user -p pass

My git repository: https://github.com/sexydevops/docker-compose-mongo

Hope it can help someone, I lost my afternoon for this ;)

for getting tooltips to refresh when the model changes, i simply use data-original-title instead of title.

e.g.

<i class="fa fa-gift" data-toggle="tooltip" data-html="true" data-original-title={{getGiftMessage(gift)}} ></i>

note that i'm initializing use of tooltips like this:

<script type="text/javascript">
    $(function () {
        $("body").tooltip({ selector: '[data-toggle=tooltip]' });
    })
</script>

versions:

• AngularJS 1.4.10
• bootstrap 3.1.1
• jquery: 1.11.0

There are a lot of good reasons in other answers but all seem to forget that for_each allows you to use reverse or pretty much any custom iterator when for loop always starts with begin() iterator.

Example with reverse iterator:

std::list<int> l {1,2,3};
std::for_each(l.rbegin(), l.rend(), [](auto o){std::cout<<o;});

Example with some custom tree iterator:

SomeCustomTree<int> a{1,2,3,4,5,6,7};
auto node = a.find(4);
std::for_each(node.breadthFirstBegin(), node.breadthFirstEnd(), [](auto o){std::cout<<o;});

I tried a lot ways and it's not working tho, not sure is it because i'm using shared transition from fragment to activity containing the edit text.

Btw my edittext is also wrapped in LinearLayout.

I added a slight delay to request focus and below code worked for me: (Kotlin)

 et_search.postDelayed({
     editText.requestFocus()

     showKeyboard()
 },400) //only 400 is working fine, even 300 / 350, the cursor is not showing

showKeyboard()

 val imm = getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
 imm.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0)

This issue started occurring for me all of a sudden, so I was sure, there could be some other reason. On digging deep, it was a simple issue where I used http in the BaseUrl of Retrofit instead of https. So changing it to https solved the issue for me.

I defined my own two functions

• utc_time2datetime(utc_time, tz=None)
• datetime2utc_time(datetime)

here:

import time
import datetime
from pytz import timezone
import calendar
import pytz


def utc_time2datetime(utc_time, tz=None):
    # convert utc time to utc datetime
    utc_datetime = datetime.datetime.fromtimestamp(utc_time)

    # add time zone to utc datetime
    if tz is None:
        tz_datetime = utc_datetime.astimezone(timezone('utc'))
    else:
        tz_datetime = utc_datetime.astimezone(tz)

    return tz_datetime


def datetime2utc_time(datetime):
    # add utc time zone if no time zone is set
    if datetime.tzinfo is None:
        datetime = datetime.replace(tzinfo=timezone('utc'))

    # convert to utc time zone from whatever time zone the datetime is set to
    utc_datetime = datetime.astimezone(timezone('utc')).replace(tzinfo=None)

    # create a time tuple from datetime
    utc_timetuple = utc_datetime.timetuple()

    # create a time element from the tuple an add microseconds
    utc_time = calendar.timegm(utc_timetuple) + datetime.microsecond / 1E6

    return utc_time

Suprisingly nobody came up with the idea of just using a div with paddingyet, so here you go:

<div style="padding-left: 30px;">
My text
</div>

If you are using bash you can try alias:

into the .bashrc file add this line:

alias p='cd /home/serdar/my_new_folder/path/'

when you write "p" on the command line, it will change the directory.

Not exactly "exporting," but you can select the rows (or Ctrl-A to select all of them) in the grid you'd like to export, and then copy with Ctrl-C.

The default is tab-delimited. You can paste that into Excel or some other editor and manipulate the delimiters all you like.

Also, if you use Ctrl-Shift-C instead of Ctrl-C, you'll also copy the column headers.

Use Navigate (View in older versions) | File Structure Popup (Ctrl+F12 on Windows, ?+F12 on OS X). Start typing method/symbol name to either narrow down the list or highlight the desired element. Press Enter to navigate to the selected element.

SELECT A.TABLE_NAME as [Table_name], A.CONSTRAINT_NAME as [Primary_Key]
 FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS A, INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE B
 WHERE CONSTRAINT_TYPE = 'PRIMARY KEY' AND A.CONSTRAINT_NAME = B.CONSTRAINT_NAME

Nothing but the following line of code worked for me:

getActivity().getWindow().setSoftInputMode(
            WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);

By default, when you click on a ListView item it doesn't change its state to "selected". So, when the event fires and you do:

myList.getSelectedItem();

The method doesn't have anything to return. What you have to do is to use the position and obtain the underlying object by doing:

myList.getItemAtPosition(position);

To get a type that implements io.Reader from a []byte slice, you can use bytes.NewReader in the bytes package:

r := bytes.NewReader(byteData)

This will return a value of type bytes.Reader which implements the io.Reader (and io.ReadSeeker) interface.

Don't worry about them not being the same "type". io.Reader is an interface and can be implemented by many different types. To learn a little bit more about interfaces in Go, read Effective Go: Interfaces and Types.

Kotlin Solution

view.isVisible = true
view.isInvisible = true
view.isGone = true

// For these to work, you need to use androidx and import:
import androidx.core.view.isVisible // or isInvisible/isGone

Kotlin Extension Solution

If you'd like them to be more consistent length, work for nullable views, and lower the chance of writing the wrong boolean, try using these custom extensions:

// Example
view.hide()

fun View?.show() {
    if (this == null) return
    if (!isVisible) isVisible = true
}

fun View?.hide() {
    if (this == null) return
    if (!isInvisible) isInvisible = true
}

fun View?.gone() {
    if (this == null) return
    if (!isGone) isGone = true
}

To make conditional visibility simple, also add these:

fun View?.show(visible: Boolean) {
    if (visible) show() else gone()
}

fun View?.hide(hide: Boolean) {
    if (hide) hide() else show()
}

fun View?.gone(gone: Boolean = true) {
    if (gone) gone() else show()
}

Before we try to solve the invalid character problem, the lack of curly braces around the if and else if statements is wreaking havoc on your program's logic. Change it to this:

if (personPlay.equals(computerPlay)) {
   System.out.println("It's a tie!");
}
else if (personPlay.equals("R")) {
   if (computerPlay.equals("S")) 
      System.out.println("Rock crushes scissors. You win!!");
   else if (computerPlay.equals("P")) 
        System.out.println("Paper eats rock. You lose!!");
}
else if (personPlay.equals("P")) {
   if (computerPlay.equals("S")) 
       System.out.println("Scissor cuts paper. You lose!!"); 
   else if (computerPlay.equals("R")) 
        System.out.println("Paper eats rock. You win!!");
} 
else if (personPlay.equals("S")) {
     if (computerPlay.equals("P")) 
         System.out.println("Scissor cuts paper. You win!!"); 
     else if (computerPlay.equals("R")) 
        System.out.println("Rock breaks scissors. You lose!!");
}
else 
     System.out.println("Invalid user input.");

Much clearer! It's now actually a piece of cake to catch the bad characters. You need to move the else statement to somewhere that will catch the errors before you attempt to process anything else. So change everything to:

if( /* insert your check for bad characters here */ ) { 
     System.out.println("Invalid user input.");
}
else if (personPlay.equals(computerPlay)) {
   System.out.println("It's a tie!");
}
else if (personPlay.equals("R")) {
   if (computerPlay.equals("S")) 
      System.out.println("Rock crushes scissors. You win!!");
   else if (computerPlay.equals("P")) 
        System.out.println("Paper eats rock. You lose!!");
}
else if (personPlay.equals("P")) {
   if (computerPlay.equals("S")) 
       System.out.println("Scissor cuts paper. You lose!!"); 
   else if (computerPlay.equals("R")) 
        System.out.println("Paper eats rock. You win!!");
} 
else if (personPlay.equals("S")) {
     if (computerPlay.equals("P")) 
         System.out.println("Scissor cuts paper. You win!!"); 
     else if (computerPlay.equals("R")) 
        System.out.println("Rock breaks scissors. You lose!!");
}

I do think requests is the best option. Also note the possibility of setting encoding manually.

import requests
response = requests.get("http://www.gutenberg.org/files/10/10-0.txt")
# response.encoding = "utf-8"
hehe = response.text

Hover to the sidebar and select the "Restore visual elements of debugger..."

Or use group_by & summarise_at from the dplyr package:

library(dplyr)

d %>%
  group_by(Name) %>%
  summarise_at(vars(-Month), funs(mean(., na.rm=TRUE)))

# A tibble: 3 x 3
  Name  Rate1 Rate2
  <fct> <dbl> <dbl>
1 Aira   16.3  47.0
2 Ben    31.3  50.3
3 Cat    44.7  54.0

See ?summarise_at for the many ways to specify the variables to act on. Here, vars(-Month) says all variables except Month.

File -> Export -> Web -> WAR file

OR in Kepler follow as shown below :

Try this

var geocoder;
geocoder = new google.maps.Geocoder();
var latlng = new google.maps.LatLng(latitude, longitude);

geocoder.geocode(
{'latLng': latlng}, 
function(results, status) {
    if (status == google.maps.GeocoderStatus.OK) {
            if (results[0]) {
                var add= results[0].formatted_address ;
                var  value=add.split(",");

                count=value.length;
                country=value[count-1];
                state=value[count-2];
                city=value[count-3];
                alert("city name is: " + city);
            }
            else  {
                alert("address not found");
            }
    }
     else {
        alert("Geocoder failed due to: " + status);
    }
}

);

This seems to work(but see below):

class data(dict,object):
    def __init__(self,*args,**argd):
        dict.__init__(self,*args,**argd)
        self.__dict__.update(self)
    def __setattr__(self,name,value):
        raise AttributeError,"Attribute '%s' of '%s' object cannot be set"%(name,self.__class__.__name__)
    def __delattr__(self,name):
        raise AttributeError,"Attribute '%s' of '%s' object cannot be deleted"%(name,self.__class__.__name__)

If you need more complex behavior, feel free to edit your answer.

edit

The following would probably be more memory-efficient for large datasets:

class data(dict,object):
    def __init__(self,*args,**argd):
        dict.__init__(self,*args,**argd)
    def __getattr__(self,name):
        return self[name]
    def __setattr__(self,name,value):
        raise AttributeError,"Attribute '%s' of '%s' object cannot be set"%(name,self.__class__.__name__)
    def __delattr__(self,name):
        raise AttributeError,"Attribute '%s' of '%s' object cannot be deleted"%(name,self.__class__.__name__)

Check that right version is referenced in your project. E.g. the dll it is complaining about, could be from an older version and that's why there could be a version mismatch.

echo "This is the main body of the mail" | mail -s "Subject of the Email" [email protected] -- -f [email protected] -F "Elvis Presley"

or

echo "This is the main body of the mail" | mail -s "Subject of the Email" [email protected] -aFrom:"Elvis Presley<[email protected]>"

For me it was important to delete the "php.executablePath" path from the VS code settings and leave only the path to PHP in the Path variable.

When I had the Path variable together with php.executablePath, an irritating error still occurred (despite the fact that the path to php was correct).

With any of those, you can select:

SELECT DISTINCT OWNER, OBJECT_NAME 
    FROM DBA_OBJECTS 
    WHERE OBJECT_TYPE = 'TABLE' AND OWNER='SOME_SCHEMA_NAME';

SELECT DISTINCT OWNER, OBJECT_NAME 
    FROM ALL_OBJECTS 
    WHERE OBJECT_TYPE = 'TABLE' AND OWNER='SOME_SCHEMA_NAME';

If you are using a ToolStripComboBox there is no DataSource exposed (.NET 4.0):

List<string> someList = new List<string>();
someList.Add("value");
someList.Add("value");
someList.Add("value");

toolStripComboBox1.Items.AddRange(someList.ToArray());

Why are you writing the code for calculating the distance by yourself?

Check the api's in Location class

If you got only one column in the range to clean, just add "(1)" to the end. It indicates in wich column of the range Excel will remove the duplicates. Something like:

 Sub norepeat()

    Range("C8:C16").RemoveDuplicates (1)

End Sub

Regards

Pure Javascript, without regular expression:

var result = replaceSpacesText.split(" ").join("");

I've just tried that myself, and it gave me a 200 OK response, but no content - the content length was 0. Are you sure it's giving you content? Anyway, I'll assume that you've really got content.

Getting actual text back relies on knowing the encoding, which can be tricky. It should be in the Content-Type header, but then you've got to parse it etc.

However, if this is actually XML (e.g. from "http://google.com/xrds/xrds.xml"), it's a lot easier. Just load the XML into memory, e.g. via LINQ to XML. For example:

using System;
using System.IO;
using System.Net;
using System.Xml.Linq;
using System.Web;

class Test
{
    static void Main()
    {
        string url = "http://google.com/xrds/xrds.xml";
        HttpWebRequest request = (HttpWebRequest) WebRequest.Create(url);

        XDocument doc;
        using (WebResponse response = request.GetResponse())
        {
            using (Stream stream = response.GetResponseStream())
            {
                doc = XDocument.Load(stream);
            }
        }
        // Now do whatever you want with doc here
        Console.WriteLine(doc);
    }   
}

If the content is XML, getting the result into an XML object model (whether it's XDocument, XmlDocument or XmlReader) is likely to be more valuable than having the plain text.

There are two ways of solving this issue:

• Delete the Python interpreter from "Python interpreters" and add it again.
• Or just add the folder with the libraries in the interpreter you are using in your project, in my case I was using "bottle" and the folder I added was "c:\Python33\Lib\site-packages\bottle-0.11.6-py3.3.egg"

Now I don't see the error anymore, and the code completion feature works as well with "bottle".

In PHP 5.3 or greater, you can get it like this:

$ip = getenv('HTTP_CLIENT_IP')?:
getenv('HTTP_X_FORWARDED_FOR')?:
getenv('HTTP_X_FORWARDED')?:
getenv('HTTP_FORWARDED_FOR')?:
getenv('HTTP_FORWARDED')?:
getenv('REMOTE_ADDR');

Besides the technical implications of static vs dynamic libraries (static files bundle everything in one big binary vs dynamic libraries that allow code sharing among several different executables), there are the legal implications.

For example, if you are using LGPL licensed code and you link statically against a LGPL library (and thus create one big binary), your code automatically becomes Open Sourced (free as in freedom) LGPL code. If you link against a shared objects, then you only need to LGPL the improvements / bug fixes that you make to the LGPL library itself.

This becomes a far more important issue if you are deciding how to compile you mobile applications for example (in Android you have a choice of static vs dynamic, in iOS you do not - it is always static).

Shorter version for those who like short code:

// usage: deleteOldFiles("./xml", "xml,xsl", 24 * 3600)


function deleteOldFiles($dir, $patterns = "*", int $timeout = 3600) {

    // $dir is directory, $patterns is file types e.g. "txt,xls", $timeout is max age

    foreach (glob($dir."/*"."{{$patterns}}",GLOB_BRACE) as $f) { 

        if (is_writable($f) && filemtime($f) < (time() - $timeout))
            unlink($f);

    }

}

Set column as unique in SQL Server from the GUI:

They really make you run around the barn to do it with the GUI:

Make sure your column does not violate the unique constraint before you begin.

1. Open SQL Server Management Studio.
2. Right click your Table, click "Design".
3. Right click the column you want to edit, a popup menu appears, click Indexes/Keys.
4. Click the "Add" Button.
5. Expand the "General" tab.
6. Make sure you have the column you want to make unique selected in the "columns" box.
7. Change the "Type" box to "Unique Key".
8. Click "Close".
9. You see a little asterisk in the file window, this means changes are not yet saved.
10. Press Save or hit Ctrl+s. It should save, and your column should be unique.

Or set column as unique from the SQL Query window:

alter table location_key drop constraint pinky;
alter table your_table add constraint pinky unique(yourcolumn);

Changes take effect immediately:

Command(s) completed successfully.

Both these work for me. Maybe post a complete example?

import javafx.application.Application;
import javafx.beans.binding.Bindings;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.ToggleButton;
import javafx.scene.layout.Background;
import javafx.scene.layout.BackgroundFill;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.CornerRadii;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.stage.Stage;

public class PaneBackgroundTest extends Application {

    @Override
    public void start(Stage primaryStage) {
        BorderPane root = new BorderPane();
        VBox vbox = new VBox();
        root.setCenter(vbox);

        ToggleButton toggle = new ToggleButton("Toggle color");
        HBox controls = new HBox(5, toggle);
        controls.setAlignment(Pos.CENTER);
        root.setBottom(controls);

//        vbox.styleProperty().bind(Bindings.when(toggle.selectedProperty())
//                .then("-fx-background-color: cornflowerblue;")
//                .otherwise("-fx-background-color: white;"));

        vbox.backgroundProperty().bind(Bindings.when(toggle.selectedProperty())
                .then(new Background(new BackgroundFill(Color.CORNFLOWERBLUE, CornerRadii.EMPTY, Insets.EMPTY)))
                .otherwise(new Background(new BackgroundFill(Color.WHITE, CornerRadii.EMPTY, Insets.EMPTY))));

        Scene scene = new Scene(root, 300, 250);

        primaryStage.setTitle("Hello World!");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }

}

Just add

.flex-control-thumbs li {
width: auto; 
}

I had some problems with anchor/hash-urls (including #) not reloading using the solution from Rex...

So I finally ended up by removing the hash part:

window.location = window.location.href.split("#")[0];

Note: If you have broad knowledge already about rebase then use below one liner for fast rebase. Solution: Assuming you are on your working branch and you are the only person working on it.

git fetch && git rebase origin/master

Resolve any conflicts, test your code, commit and push new changes to remote branch.

                            ~:   For noobs   :~

The following steps might help anyone who are new to git rebase and wanted to do it without hassle

Step 1: Assuming that there are no commits and changes to be made on YourBranch at this point. We are visiting YourBranch.

git checkout YourBranch
git pull --rebase

What happened? Pulls all changes made by other developers working on your branch and rebases your changes on top of it.

Step 2: Resolve any conflicts that presents.

Step 3:

git checkout master
git pull --rebase

What happened? Pulls all the latest changes from remote master and rebases local master on remote master. I always keep remote master clean and release ready! And, prefer only to work on master or branches locally. I recommend in doing this until you gets a hand on git changes or commits. Note: This step is not needed if you are not maintaining local master, instead you can do a fetch and rebase remote master directly on local branch directly. As I mentioned in single step in the start.

Step 4: Resolve any conflicts that presents.

Step 5:

git checkout YourBranch
git rebase master

What happened? Rebase on master happens

Step 6: Resolve any conflicts, if there are conflicts. Use git rebase --continue to continue rebase after adding the resolved conflicts. At any time you can use git rebase --abort to abort the rebase.

Step 7:

git push --force-with-lease 

What happened? Pushing changes to your remote YourBranch. --force-with-lease will make sure whether there are any other incoming changes for YourBranch from other developers while you rebasing. This is super useful rather than force push. In case any incoming changes then fetch them to update your local YourBranch before pushing changes.

Why do I need to push changes? To rewrite the commit message in remote YourBranch after proper rebase or If there are any conflicts resolved? Then you need to push the changes you resolved in local repo to the remote repo of YourBranch

Yahoooo...! You are succesfully done with rebasing.

You might also be looking into doing:

git checkout master
git merge YourBranch

When and Why? Merge your branch into master if done with changes by you and other co-developers. Which makes YourBranch up-to-date with master when you wanted to work on same branch later.

                            ~:   (?o 3 o)? rebase   :~

Like so many of you, I've been struggling with this for a while. The solution ultimately had to do with the div containing the UL. All suggestions on altering padding, width, etc. of the UL had no effect, but the following did.

It's all about the margin:0 auto; on the containing div. I hope this helps some people, and thanks to everyone else who already suggested this in combination with other things.

.divNav
{
    width: 99%;
    text-align:center;
    margin:0 auto; 
}

.divNav ul
{ 
    display:inline-block; 
    list-style:none;
    zoom: 1;
}

.divNav ul li 
{
    float:left;
    margin-right: .8em;       
    padding: 0; 
}

.divNav a,  #divNav a:visited
{
    width: 7.5em;
    display: block; 
    border: 1px solid #000;
    border-bottom:none;
    padding: 5px; 
    background-color:#F90;
    text-decoration: none;
    color:#FFF;
    text-align: center;
    font-family:Verdana, Geneva, sans-serif;
    font-size:1em;
}

select * from sysibm.systables
where owner = 'SCHEMA'
and name like '%CUR%'
and type = 'T';

This will give you all the tables with CUR in them in the SCHEMA schema.

See here for more details on the SYSIBM.SYSTABLES table. If you have a look at the navigation pane on the left, you can get all sorts of wonderful DB2 metatdata.

Note that this link is for the mainframe DB2/z. DB2/LUW (the Linux/UNIX/Windows one) has slightly different columns. For that, I believe you want the CREATOR column.

In any case, you should examine the IBM docs for your specific variant. The table name almost certainly won't change however, so just look up SYSIBM.SYSTABLES for the details.

There should be no difference at all maybe the first is a little more performant but i think it's trivial ( you shouldn't worry about this, really ).

With both you wrap the <body> tag in a jQuery object

I have added few lines inside package.json:

"scripts": {
  ...
  "clean": "rmdir /s /q node_modules",
  "reinstall": "npm run clean && npm install",
  "rebuild": "npm run clean && npm install && rmdir /s /q dist && npm run build --prod",
  ...
}

If you want to clean only you can use this rimraf node_modules.

When I use ssh I need to distinct between problems caused by connection issues and error codes of remote command in errexit (set -e) mode. I use the following function:

# prepare environment on calling site:

rssh="ssh -o ConnectionTimeout=5 -l root $remote_ip"

function exit255 {
    local flags=$-
    set +e
    "$@"
    local status=$?
    set -$flags
    if [[ $status == 255 ]]
    then
        exit 255
    else
        return $status
    fi
}
export -f exit255

# callee:

set -e
set -o pipefail

[[ $rssh ]]
[[ $remote_ip ]]
[[ $( type -t exit255 ) == "function" ]]

rjournaldir="/var/log/journal"
if exit255 $rssh "[[ ! -d '$rjournaldir/' ]]"
then
    $rssh "mkdir '$rjournaldir/'"
fi
rconf="/etc/systemd/journald.conf"
if [[ $( $rssh "grep '#Storage=auto' '$rconf'" ) ]]
then
    $rssh "sed -i 's/#Storage=auto/Storage=persistent/' '$rconf'"
fi
$rssh systemctl reenable systemd-journald.service
$rssh systemctl is-enabled systemd-journald.service
$rssh systemctl restart systemd-journald.service
sleep 1
$rssh systemctl status systemd-journald.service
$rssh systemctl is-active systemd-journald.service

I just had this exact same problem. This will sound crazy but if someone sees this try this before drastic measures. delete method signature:

public static void main(String args[])

(Not the body of your main just method declaration)

Save your project then re-write the method's header back onto its respective body. Save again and re-run. That worked for me but if it doesn't work try again but clean project right before re-running.

I don't know how this fixed it but it did. Worth a shot before recreating your whole project right?

Given a String str:

str = str.replaceAll("\\\\r","")
str = str.replaceAll("\\\\n","")

The best way to go about it would be to get a SynchronizationContext from the UI thread and use it. This class abstracts marshalling calls to other threads, and makes testing easier (in contrast to using WPF's Dispatcher directly). For example:

class MyViewModel
{
    private readonly SynchronizationContext _syncContext;

    public MyViewModel()
    {
        // we assume this ctor is called from the UI thread!
        _syncContext = SynchronizationContext.Current;
    }

    // ...

    private void watcher_Changed(object sender, FileSystemEventArgs e)
    {
         _syncContext.Post(o => DGAddRow(crp.Protocol, ft), null);
    }
}

Try this:

select Activity, SUM(Incomes.Amount) as "Total Amount 2009", SUM(Incomes2008.Amount) 
as "Total Amount 2008" from
Activities, Incomes, Incomes2008
where Activities.UnitName = ?  AND
Incomes.ActivityId = Activities.ActivityID  AND
Incomes2008.ActivityId = Activities.ActivityID GROUP BY
Activity ORDER BY Activity;

Basically you have to JOIN Incomes2008 table with the output of your first query.

I dislike answering things that aren't a real solution...

...but when I encountered this same problem, I made below workaround:

function doThis() {
  var err=0
  if (cond1) { alert('ret1'); err=1; }
  if (cond2) { alert('ret2'); err=1; }
  if (cond3) { alert('ret3'); err=1; }
  if (err < 1) {
    // do the rest (or have it skipped)
  }
}

Hope it can be useful for anyone.

System.out.println(Integer.toHexString(test[0]));

OR (pretty print)

System.out.printf("0x%02X", test[0]);

OR (pretty print)

System.out.println(String.format("0x%02X", test[0]));

One datestamp is already in the _id object, representing insert time

So if the insert time is what you need, it's already there:

Login to mongodb shell

ubuntu@ip-10-0-1-223:~$ mongo 10.0.1.223
MongoDB shell version: 2.4.9
connecting to: 10.0.1.223/test

Create your database by inserting items

> db.penguins.insert({"penguin": "skipper"})
> db.penguins.insert({"penguin": "kowalski"})
> 

Lets make that database the one we are on now

> use penguins
switched to db penguins

Get the rows back:

> db.penguins.find()
{ "_id" : ObjectId("5498da1bf83a61f58ef6c6d5"), "penguin" : "skipper" }
{ "_id" : ObjectId("5498da28f83a61f58ef6c6d6"), "penguin" : "kowalski" }

Get each row in yyyy-MM-dd HH:mm:ss format:

> db.penguins.find().forEach(function (doc){ d = doc._id.getTimestamp(); print(d.getFullYear()+"-"+(d.getMonth()+1)+"-"+d.getDate() + " " + d.getHours() + ":" + d.getMinutes() + ":" + d.getSeconds()) })
2014-12-23 3:4:41
2014-12-23 3:4:53

If that last one-liner confuses you I have a walkthrough on how that works here: https://stackoverflow.com/a/27613766/445131

Here's another solution using display: flex instead of position: absolute or display: grid.

.container_row{_x000D_
  display: flex;_x000D_
}_x000D_
_x000D_
.layer1 {_x000D_
  width: 100%;_x000D_
  background-color: rgba(255,0,0,0.5);  // red_x000D_
}_x000D_
_x000D_
.layer2{_x000D_
  width: 100%;_x000D_
  margin-left: -100%;_x000D_
  background-color: rgba(0,0,255,0.5);  // blue_x000D_
}

<div class="container_row">_x000D_
    <div class="layer1">_x000D_
        <span>Lorem ipsum...</span>_x000D_
    </div>_x000D_
    <div class="layer2">_x000D_
        More lorem ipsum..._x000D_
    </div>_x000D_
</div>_x000D_
<div class="container_row">_x000D_
    ...same HTML as above. This one should never overlap the .container_row above._x000D_
</div>

I don't know if I understand very well what you are trying to do, but I had to use jQuery plugins that required jQuery to be in the global context (window) and I put the following in my entry.js:

var $ = require('jquery');
window.jQuery = $;
window.$ = $;

The I just have to require wherever i want the jqueryplugin.min.js and window.$ is extended with the plugin as expected.

You can use fall-through:

switch (pageid)
{
    case "listing-page":
    case "home-page":
        alert("hello");
        break;
    case "details-page":
        alert("goodbye");
        break;
}

Another way to remove the title from your Toolbar is to null it out like so:

Toolbar toolbar = (Toolbar) findViewById(R.id.my_awesome_toolbar);
toolbar.setTitle(null);

Take a look at this question and this question for some good answers on C++ object instantiation.

This basic idea is that objects instantiated on the heap (using new) need to be cleaned up manually, those instantiated on the stack (without new) are automatically cleaned up when they go out of scope.

void SomeFunc()
{
    Point p1 = Point(0,0);
} // p1 is automatically freed

void SomeFunc2()
{
    Point *p1 = new Point(0,0);
    delete p1; // p1 is leaked unless it gets deleted
}

I also experienced that for example:

This code doesnt work and get the intended block error.

class Foo(models.Model):
title = models.CharField(max_length=200)
body = models.TextField()
pub_date = models.DateTimeField('date published')
likes = models.IntegerField()

def __unicode__(self):
return self.title

However, when i press tab before typing return self.title statement, the code works.

class Foo(models.Model):
title = models.CharField(max_length=200)
body = models.TextField()
pub_date = models.DateTimeField('date published')
likes = models.IntegerField()

def __unicode__(self):
    return self.title

Hope, this will help others.

Just ran into this... I have a common library shared among multiple transpiled products. I was using symlinks with brunch to handle sharing things between the projects. When moving to webpack, this stopped working.

What did get things working was using webpack configuration to turn off symlink resolving.

i.e. adding this in webpack.config.js:

module.exports = {
  //...
  resolve: {
    symlinks: false
  }
};

as documented here:

https://webpack.js.org/configuration/resolve/#resolvesymlinks

You can use a FilenameFilter, like so:

File dir = new File(directory);

File[] matches = dir.listFiles(new FilenameFilter()
{
  public boolean accept(File dir, String name)
  {
     return name.startsWith("temp") && name.endsWith(".txt");
  }
});

SELECT GETDATE() + (hours / 24.00000000000000000)

Adding to GETDATE() defaults to additional days, but it will also convert down to hours/seconds/milliseconds using decimal.

i also recommend thinking this thru and then choosing to store images in your file system rather than the DB .. see here: Storing Images in DB - Yea or Nay?

The .cpp file is configured to use precompiled header, therefore it must be included first (before iostream). For Visual Studio, it's name is usually "stdafx.h".

If there are no stdafx* files in your project, you need to go to this file's options and set it as “Not using precompiled headers”.

Building on what is mentioned in the comments, the simplest solution would be:

@RequestMapping(method = RequestMethod.PUT, consumes = MediaType.APPLICATION_JSON_VALUE)
@ResponseBody
public Collection<BudgetDTO> updateConsumerBudget(@RequestBody SomeDto someDto) throws GeneralException, ParseException {

    //whatever

}

class SomeDto {

   private List<WhateverBudgerPerDateDTO> budgetPerDate;


  //getters setters
}

The solution assumes that the HTTP request you are creating actually has

Content-Type:application/json instead of text/plain

int elem = 42;
std::vector<int> v;
v.push_back(elem);
if(std::find(v.begin(), v.end(), elem) != v.end())
{
  //elem exists in the vector
} 

For the current Python Launcher

If you have Py3 installed but default to py2

py -3 -m pip install ipykernel
py -3 -m ipykernel install --user

If you have Py2 installed but default to py3

py -2 -m pip install ipykernel
py -2 -m ipykernel install --user

You can download the wheel corresponding to your configuration here ("Pillow-4.1.1-cp36-cp36m-win_amd64.whl" in your case) and install it with:

pip install some-package.whl

If you have problem to install the wheel read this answer

For POI 3.17 this worked for me

switch (cellh.getCellTypeEnum()) {
    case FORMULA: 
        if (cellh.getCellFormula().indexOf("LINEST") >= 0) {
            value = Double.toString(cellh.getNumericCellValue());
        } else {
            value = XLS_getDataFromCellValue(evaluator.evaluate(cellh));
        }
        break;
    case NUMERIC:
        value = Double.toString(cellh.getNumericCellValue());
        break;
    case STRING:
        value = cellh.getStringCellValue();
        break;
    case BOOLEAN:
        if(cellh.getBooleanCellValue()){
            value = "true";
        } else {
            value = "false";
        }
        break;
    default:
        value = "";
        break;
}

try this

    $('#div_id').animate({scrollTop:0}, '500', 'swing');

Doing multiple ALTER COLUMN actions inside a single ALTER TABLE statement is not possible.

See the ALTER TABLE syntax here

You can do multiple ADD or multiple DROP COLUMN, but just one ALTER COLUMN.

Here is where you went wrong:

this.result = http.get('friends.json')
                  .map(response => response.json())
                  .subscribe(result => this.result =result.json());

it should be:

http.get('friends.json')
                  .map(response => response.json())
                  .subscribe(result => this.result =result);

or

http.get('friends.json')
                  .subscribe(result => this.result =result.json());

You have made two mistakes:

1- You assigned the observable itself to this.result. When you actually wanted to assign the list of friends to this.result. The correct way to do it is:

• you subscribe to the observable. .subscribe is the function that actually executes the observable. It takes three callback parameters as follow:

  .subscribe(success, failure, complete);

for example:

.subscribe(
    function(response) { console.log("Success Response" + response)},
    function(error) { console.log("Error happened" + error)},
    function() { console.log("the subscription is completed")}
);

Usually, you take the results from the success callback and assign it to your variable. the error callback is self explanatory. the complete callback is used to determine that you have received the last results without any errors. On your plunker, the complete callback will always be called after either the success or the error callback.

2- The second mistake, you called .json() on .map(res => res.json()), then you called it again on the success callback of the observable. .map() is a transformer that will transform the result to whatever you return (in your case .json()) before it's passed to the success callback you should called it once on either one of them.

If you already have a full backup from your database, fortunately, you have an option in SQL Management Studio. In this case, you can use the following steps:

1. Right click on database -> Tasks -> Restore -> Database.

2. In General tab, click on Timeline -> select Specific date and time option.

3. Move the timeline slider to before update command time -> click OK.

4. In the destination database name, type a new name.

5. In the Files tab, check in Reallocate all files to folder and then select a new path to save your recovered database.

6. In the options tab, check in Overwrite ... and remove Take tail-log... check option.

7. Finally, click on OK and wait until the recovery process is over.

I have used this method myself in an operational database and it was very useful.

It determines when to close the application if a form is closed (if your application is not attached to a specific form).

    private void MyForm_FormClosed(object sender, FormClosedEventArgs e)
    {
        if (Application.OpenForms.Count == 0) Application.Exit();
    }

An easier way for me was:

var activeurl = window.location;
$('a[href="'+activeurl+'"]').parent('li').addClass('active');

because my links go to absolute url, but if your links are relative then you can use:

 window.location**.pathname**

You could try something like this as well

<a href="#" onclick="one(); two();" >click</a>

<script type="text/javascript">
    function one(){
        alert('test');
    }

    function two(){
        alert('test2');
    }
</script>

urllib.request.urlopen(url).read() should return you the raw HTML page as a string.

This a old question, but this can useful for someone In my case i can't using a sub query because i have a big query and i need using min() on my result, if i use sub query the db need reexecute my big query. i'm using Mysql

select t.* 
    from (select m.*, @g := 0
        from MyTable m --here i have a big query
        order by id, record_date) t
    where (1 = case when @g = 0 or @g <> id then 1 else  0 end )
          and (@g := id) IS NOT NULL

Basically I ordered the result and then put a variable in order to get only the first record in each group.

By chance: Default error pages often contain detailed information, e.g.

Apache/{Version} ({OS}) {Modules} PHP/{Version} {Modules} Server at {Domain}

Not so easy: Find out which versions of PHP applications run on the server and which version of PHP they require.

Another approach, only mentioned for the sake of completeness; please forget after reading: You could (but you won't!) detect the PHP version by trying known exploits.

Ok, so the easiest method to create several plots is this:

import matplotlib.pyplot as plt
x=[[1,2,3,4],[1,2,3,4],[1,2,3,4],[1,2,3,4]]
y=[[1,2,3,4],[1,2,3,4],[1,2,3,4],[1,2,3,4]]
for i in range(len(x)):
    plt.figure()
    plt.plot(x[i],y[i])
    # Show/save figure as desired.
    plt.show()
# Can show all four figures at once by calling plt.show() here, outside the loop.
#plt.show()

Note that you need to create a figure every time or pyplot will plot in the first one created.

If you want to create several data series all you need to do is:

import matplotlib.pyplot as plt
plt.figure()
x=[[1,2,3,4],[1,2,3,4],[1,2,3,4],[1,2,3,4]]
y=[[1,2,3,4],[2,3,4,5],[3,4,5,6],[7,8,9,10]]
plt.plot(x[0],y[0],'r',x[1],y[1],'g',x[2],y[2],'b',x[3],y[3],'k')

You could automate it by having a list of colours like ['r','g','b','k'] and then just calling both entries in this list and corresponding data to be plotted in a loop if you wanted to. If you just want to programmatically add data series to one plot something like this will do it (no new figure is created each time so everything is plotted in the same figure):

import matplotlib.pyplot as plt
x=[[1,2,3,4],[1,2,3,4],[1,2,3,4],[1,2,3,4]]
y=[[1,2,3,4],[2,3,4,5],[3,4,5,6],[7,8,9,10]]
colours=['r','g','b','k']
plt.figure() # In this example, all the plots will be in one figure.    
for i in range(len(x)):
    plt.plot(x[i],y[i],colours[i])
plt.show()

Hope this helps. If anything matplotlib has a very good documentation page with plenty of examples.

17 Dec 2019: added plt.show() and plt.figure() calls to clarify this part of the story.

The context object allows you to manipulate the canvas; you can draw rectangles for example and a lot more.

If you want to get the width and height, you can just use the standard HTML attributes width and height:

var canvas = document.getElementById( 'yourCanvasID' );
var ctx = canvas.getContext( '2d' );

alert( canvas.width );
alert( canvas.height ); 

Simple really create a long variable that represents a default start date for your program Get the date to another long variable. Then deduct the long start date and convert to a integer voila To read and convert back just add rather than subtract. obviously this is dependant on how large a date range you require.

Late answer but showing one more possibility...

Cumulative Sum generation can be more optimized with the CROSS APPLY logic.

Works better than the INNER JOIN & OVER Clause when analyzed the actual query plan ...

/* Create table & populate data */
IF OBJECT_ID('tempdb..#TMP') IS NOT NULL
DROP TABLE #TMP 

SELECT * INTO #TMP 
FROM (
SELECT 1 AS id
UNION 
SELECT 2 AS id
UNION 
SELECT 3 AS id
UNION 
SELECT 4 AS id
UNION 
SELECT 5 AS id
) Tab


/* Using CROSS APPLY 
Query cost relative to the batch 17%
*/    
SELECT   T1.id, 
         T2.CumSum 
FROM     #TMP T1 
         CROSS APPLY ( 
         SELECT   SUM(T2.id) AS CumSum 
         FROM     #TMP T2 
         WHERE    T1.id >= T2.id
         ) T2

/* Using INNER JOIN 
Query cost relative to the batch 46%
*/
SELECT   T1.id, 
         SUM(T2.id) CumSum
FROM     #TMP T1
         INNER JOIN #TMP T2
                 ON T1.id > = T2.id
GROUP BY T1.id

/* Using OVER clause
Query cost relative to the batch 37%
*/
SELECT   T1.id, 
         SUM(T1.id) OVER( PARTITION BY id)
FROM     #TMP T1

Output:-
  id       CumSum
-------   ------- 
   1         1
   2         3
   3         6
   4         10
   5         15

You need to use a timeout to check if there is an another click after the first click.

Here is the trick:

// Author:  Jacek Becela
// Source:  http://gist.github.com/399624
// License: MIT

jQuery.fn.single_double_click = function(single_click_callback, double_click_callback, timeout) {
  return this.each(function(){
    var clicks = 0, self = this;
    jQuery(this).click(function(event){
      clicks++;
      if (clicks == 1) {
        setTimeout(function(){
          if(clicks == 1) {
            single_click_callback.call(self, event);
          } else {
            double_click_callback.call(self, event);
          }
          clicks = 0;
        }, timeout || 300);
      }
    });
  });
}

Usage:

$("button").single_double_click(function () {
  alert("Try double-clicking me!")
}, function () {
  alert("Double click detected, I'm hiding")
  $(this).hide()
})

<button>Click Me!</button>

EDIT:

As stated below, prefer using the native dblclick event: http://www.quirksmode.org/dom/events/click.html

Or the one provided by jQuery: http://api.jquery.com/dblclick/

Imagine you have a window open on http://www.foo.com/bar/page.html In all of them (HTML, Javascript and CSS):

opened_url = http://www.foo.com/bar/page.html
base_path = http://www.foo.com/bar/
home_path = http://www.foo.com/
/kitten.png = Home_path/kitten.png
kitten.png = Base_path/kitten.png

In HTML and Javascript, the base_path is based on the opened window. In big javascript projects you need a BASEPATH or root variable to store the base_path occasionally. (like this)

In CSS the opened url is the address of which your .css is stored or loaded, its not the same like javascript with current opened window in this case.

And for being more secure in absolute paths it is recommended to use // instead of http:// for possible future migrations to https://. In your own example, use it this way:

<img src="//www.foo.com/images/kitten.png">

This implementation is slightly different. You pass a passwordbox to the View thru binding of a property in ViewModel, it doesn't use any command params. The ViewModel Stays Ignorant of the View. I have a VB vs 2010 Project that can be downloaded from SkyDrive. Wpf MvvM PassWordBox Example.zip https://skydrive.live.com/redir.aspx?cid=e95997d33a9f8d73&resid=E95997D33A9F8D73!511

The way that I am Using PasswordBox in a Wpf MvvM Application is pretty simplistic and works well for Me. That does not mean that I think it is the correct way or the best way. It is just an implementation of Using PasswordBox and the MvvM Pattern.

Basicly You create a public readonly property that the View can bind to as a PasswordBox (The actual control) Example:

Private _thePassWordBox As PasswordBox
Public ReadOnly Property ThePassWordBox As PasswordBox
    Get
        If IsNothing(_thePassWordBox) Then _thePassWordBox = New PasswordBox
        Return _thePassWordBox
    End Get
End Property

I use a backing field just to do the self Initialization of the property.

Then From Xaml you bind the Content of a ContentControl or a Control Container Example:

 <ContentControl Grid.Column="1" Grid.Row="1" Height="23" Width="120" Content="{Binding Path=ThePassWordBox}" HorizontalAlignment="Center" VerticalAlignment="Center" />

From there you have full control of the passwordbox I also use a PasswordAccessor (Just a Function of String) to return the Password Value when doing login or whatever else you want the Password for. In the Example I have a public property in a Generic User Object Model. Example:

Public Property PasswordAccessor() As Func(Of String)

In the User Object the password string property is readonly without any backing store it just returns the Password from the PasswordBox. Example:

Public ReadOnly Property PassWord As String
    Get
        Return If((PasswordAccessor Is Nothing), String.Empty, PasswordAccessor.Invoke())
    End Get
End Property

Then in the ViewModel I make sure that the Accessor is created and set to the PasswordBox.Password property' Example:

Public Sub New()
    'Sets the Accessor for the Password Property
    SetPasswordAccessor(Function() ThePassWordBox.Password)
End Sub

Friend Sub SetPasswordAccessor(ByVal accessor As Func(Of String))
    If Not IsNothing(VMUser) Then VMUser.PasswordAccessor = accessor
End Sub

When I need the Password string say for login I just get the User Objects Password property that really invokes the Function to grab the password and return it, then the actual password is not stored by the User Object. Example: would be in the ViewModel

Private Function LogIn() as Boolean
    'Make call to your Authentication methods and or functions. I usally place that code in the Model
    Return AuthenticationManager.Login(New UserIdentity(User.UserName, User.Password)
End Function

That should Do It. The ViewModel doesn't need any knowledge of the View's Controls. The View Just binds to property in the ViewModel, not any different than the View Binding to an Image or Other Resource. In this case that resource(Property) just happens to be a usercontrol. It allows for testing as the ViewModel creates and owns the Property and the Property is independent of the View. As for Security I don't know how good this implementation is. But by using a Function the Value is not stored in the Property itself just accessed by the Property.

Here is a work around but not always a great one, depending on how much you scale it. Explanation can be found here: https://www.geekgoddess.com/how-to-resize-the-google-nocaptcha-recaptcha/

.g-recaptcha {
    transform:scale(0.77);
    transform-origin:0 0;
}

UPDATE: Google has added support for a smaller size via a parameter. Have a look at the docs - https://developers.google.com/recaptcha/docs/display#render_param

If you need to order your code into namespaces, just use the keyword namespace:

file1.php

namespace foo\bar;

In file2.php

$obj = new \foo\bar\myObj();

You can also use use. If in file2 you put

use foo\bar as mypath;

you need to use mypath instead of bar anywhere in the file:

$obj  = new mypath\myObj();

Using use foo\bar; is equal to use foo\bar as bar;.

just run DBCC useroptions and you'll get something like this:

Set Option                  Value
--------------------------- --------------
textsize                    2147483647
language                    us_english
dateformat                  mdy
datefirst                   7
lock_timeout                -1
quoted_identifier           SET
arithabort                  SET
ansi_null_dflt_on           SET
ansi_warnings               SET
ansi_padding                SET
ansi_nulls                  SET
concat_null_yields_null     SET
isolation level             read committed

The Visual Studio Build tools are a different download than the IDE. They appear to be a pretty small subset, and they're called Build Tools for Visual Studio 2019 (download).

You can use the GUI to do the installation, or you can script the installation of msbuild:

vs_buildtools.exe --add Microsoft.VisualStudio.Workload.MSBuildTools --quiet

Microsoft.VisualStudio.Workload.MSBuildTools is a "wrapper" ID for the three subcomponents you need:

• Microsoft.Component.MSBuild
• Microsoft.VisualStudio.Component.CoreBuildTools
• Microsoft.VisualStudio.Component.Roslyn.Compiler

You can find documentation about the other available CLI switches here.

The build tools installation is much quicker than the full IDE. In my test, it took 5-10 seconds. With --quiet there is no progress indicator other than a brief cursor change. If the installation was successful, you should be able to see the build tools in %programfiles(x86)%\Microsoft Visual Studio\2019\BuildTools\MSBuild\Current\Bin.

If you don't see them there, try running without --quiet to see any error messages that may occur during installation.