This one is useful as well when you want to implement a functional interface

Runnable r = ()-> System.out.print("Run method");

is equivalent to

Runnable r = new Runnable() {
        @Override
        public void run() {
            System.out.print("Run method");
        }
};

int maxAge = context.Persons.Max(p => p.Age);

This version, if the list is empty:

• Returns null - for nullable overloads
• Throws Sequence contains no element exception - for non-nullable overloads

-

int maxAge = context.Persons.Select(p => p.Age).DefaultIfEmpty(0).Max();

This version handles the empty list case, but it generates more complex query, and for some reason doesn't work with EF Core.

-

int maxAge = context.Persons.Max(p => (int?)p.Age) ?? 0;

This version is elegant and performant (simple query and single round-trip to the database), works with EF Core. It handles the mentioned exception above by casting the non-nullable type to nullable and then applying the default value using the ?? operator.

Little bit off topic but say i want to remove all 2s from a list. Here's a very elegant way to do that.

void RemoveAll<T>(T item,List<T> list)
{
    while(list.Contains(item)) list.Remove(item);
}

With predicate:

void RemoveAll<T>(Func<T,bool> predicate,List<T> list)
{
    while(list.Any(predicate)) list.Remove(list.First(predicate));
}

+1 only to encourage you to leave your answer here for learning purposes. You're also right about it being off-topic, but I won't ding you for that because of there is significant value in leaving your examples here, again, strictly for learning purposes. I'm posting this response as an edit because posting it as a series of comments would be unruly.

Though your examples are short & compact, neither is elegant in terms of efficiency; the first is bad at O(n²), the second, absolutely abysmal at O(n³). Algorithmic efficiency of O(n²) is bad and should be avoided whenever possible, especially in general-purpose code; efficiency of O(n³) is horrible and should be avoided in all cases except when you know n will always be very small. Some might fling out their "premature optimization is the root of all evil" battle axes, but they do so naïvely because they do not truly understand the consequences of quadratic growth since they've never coded algorithms that have to process large datasets. As a result, their small-dataset-handling algorithms just run generally slower than they could, and they have no idea that they could run faster. The difference between an efficient algorithm and an inefficient algorithm is often subtle, but the performance difference can be dramatic. The key to understanding the performance of your algorithm is to understand the performance characteristics of the primitives you choose to use.

In your first example, list.Contains() and Remove() are both O(n), so a while() loop with one in the predicate & the other in the body is O(n²); well, technically O(m*n), but it approaches O(n²) as the number of elements being removed (m) approaches the length of the list (n).

Your second example is even worse: O(n³), because for every time you call Remove(), you also call First(predicate), which is also O(n). Think about it: Any(predicate) loops over the list looking for any element for which predicate() returns true. Once it finds the first such element, it returns true. In the body of the while() loop, you then call list.First(predicate) which loops over the list a second time looking for the same element that had already been found by list.Any(predicate). Once First() has found it, it returns that element which is passed to list.Remove(), which loops over the list a third time to yet once again find that same element that was previously found by Any() and First(), in order to finally remove it. Once removed, the whole process starts over at the beginning with a slightly shorter list, doing all the looping over and over and over again starting at the beginning every time until finally no more elements matching the predicate remain. So the performance of your second example is O(m*m*n), or O(n³) as m approaches n.

Your best bet for removing all items from a list that match some predicate is to use the generic list's own List<T>.RemoveAll(predicate) method, which is O(n) as long as your predicate is O(1). A for() loop technique that passes over the list only once, calling list.RemoveAt() for each element to be removed, may seem to be O(n) since it appears to pass over the loop only once. Such a solution is more efficient than your first example, but only by a constant factor, which in terms of algorithmic efficiency is negligible. Even a for() loop implementation is O(m*n) since each call to Remove() is O(n). Since the for() loop itself is O(n), and it calls Remove() m times, the for() loop's growth is O(n²) as m approaches n.

I've sorted this out using the cb.createQuery() (without the result type parameter):

public class Blah() {

    CriteriaBuilder criteriaBuilder = entityManager.getCriteriaBuilder();
    CriteriaQuery query = criteriaBuilder.createQuery();
    Root<Entity> root;
    Predicate whereClause;
    EntityManager entityManager;
    Class<Entity> domainClass;

    ... Methods to create where clause ...

    public Blah(EntityManager entityManager, Class<Entity> domainClass) {
        this.entityManager = entityManager;
        this.domainClass = domainClass;
        criteriaBuilder = entityManager.getCriteriaBuilder();
        query = criteriaBuilder.createQuery();
        whereClause = criteriaBuilder.equal(criteriaBuilder.literal(1), 1);
        root = query.from(domainClass);
    }

    public CriteriaQuery<Entity> getQuery() {
        query.select(root);
        query.where(whereClause);
        return query;
    }

    public CriteriaQuery<Long> getQueryForCount() {
        query.select(criteriaBuilder.count(root));
        query.where(whereClause);
        return query;
    }

    public List<Entity> list() {
        TypedQuery<Entity> q = this.entityManager.createQuery(this.getQuery());
        return q.getResultList();
    }

    public Long count() {
        TypedQuery<Long> q = this.entityManager.createQuery(this.getQueryForCount());
        return q.getSingleResult();
    }
}

Hope it helps :)

In C# Predicates are simply delegates that return booleans. They're useful (in my experience) when you're searching through a collection of objects and want something specific.

I've recently run into them in using 3rd party web controls (like treeviews) so when I need to find a node within a tree, I use the .Find() method and pass a predicate that will return the specific node I'm looking for. In your example, if 'a' mod 2 is 0, the delegate will return true. Granted, when I'm looking for a node in a treeview, I compare it's name, text and value properties for a match. When the delegate finds a match, it returns the specific node I was looking for.

The predicate-based searching methods allow a method delegate or lambda expression to decide whether a given element is a “match.” A predicate is simply a delegate accepting an object and returning true or false: public delegate bool Predicate (T object);

   static void Main()
        {
            string[] names = { "Lukasz", "Darek", "Milosz" };
            string match1 = Array.Find(names, delegate(string name) { return name.Contains("L"); });
            //or
            string match2 = Array.Find(names, delegate(string name) { return name.Contains("L"); });
            //or
            string match3 = Array.Find(names, x => x.Contains("L"));


            Console.WriteLine(match1 + " " + match2 + " " + match3);     // Lukasz Lukasz Lukasz
        }
        static bool ContainsL(string name) { return name.Contains("L"); }

solution of TheSoftwareJedi works,

also you can archive it with using couple of value and nullable types:

static T? FindThing<T>(IList collection, int id) where T : struct, IThing
{
    foreach T thing in collecion
    {
        if (thing.Id == id)
            return thing;
    }
    return null;
}

This is what I tried for a right outer join [as per my requirement]:

m1 <- merge(x=companies, y=rounds2, by.x=companies$permalink, 
            by.y=rounds2$company_permalink, all.y=TRUE)
# Error in fix.by(by.x, x) : 'by' must specify uniquely valid columns
m1 <- merge(x=companies, y=rounds2, by.x=c("permalink"), 
            by.y=c("company_permalink"), all.y=TRUE)

This worked.

I think a quick way to change the options of a widget is using the configure method.

In your case, it would look like this:

self.x.configure(state=NORMAL)

You can use a resource key like this:

<UserControl.Resources>
    <SolidColorBrush x:Key="{x:Static local:Foo.MyKey}">Blue</SolidColorBrush>
</UserControl.Resources>
<Grid Background="{StaticResource {x:Static local:Foo.MyKey}}" />

public partial class Foo : UserControl
{
    public Foo()
    {
        InitializeComponent();
        var brush = (SolidColorBrush)FindResource(MyKey);
    }

    public static ResourceKey MyKey { get; } = CreateResourceKey();

    private static ComponentResourceKey CreateResourceKey([CallerMemberName] string caller = null)
    {
        return new ComponentResourceKey(typeof(Foo), caller); ;
    }
}

setInterval as suggested by SLaks was exactly what I needed to make my timer. (Thanks mate!)

Using setInterval and this great blog post I ended up creating the following function to display a timer inside my "box_header" div. I hope this helps anyone else with similar requirements!

 function get_elapsed_time_string(total_seconds) {
  function pretty_time_string(num) {
    return ( num < 10 ? "0" : "" ) + num;
  }

  var hours = Math.floor(total_seconds / 3600);
  total_seconds = total_seconds % 3600;

  var minutes = Math.floor(total_seconds / 60);
  total_seconds = total_seconds % 60;

  var seconds = Math.floor(total_seconds);

  // Pad the minutes and seconds with leading zeros, if required
  hours = pretty_time_string(hours);
  minutes = pretty_time_string(minutes);
  seconds = pretty_time_string(seconds);

  // Compose the string for display
  var currentTimeString = hours + ":" + minutes + ":" + seconds;

  return currentTimeString;
}

var elapsed_seconds = 0;
setInterval(function() {
  elapsed_seconds = elapsed_seconds + 1;
  $('#box_header').text(get_elapsed_time_string(elapsed_seconds));
}, 1000);

a simple windows search for android-sdk should help you find it, assuming you named it that. You also might just wanna try sdk

Here is an easy way of how you can do it, without having to use anything fancy, or even JSON.

First, create a server side script to handle your requests. Something like http://www.example.com/path/handler.php

You will call it with parameters, like this: .../handler.php?param1=12345&param2=67890

Inside it, after processing the recieved data, output:

document.serverResponse('..all the data, in any format that suits you..');
// Any code could be used instead, because you dont have to encode this data
// All your output will simply be executed as normal javascript

Now, in the client side script, use the following:

document.serverResponse = function(param){ console.log(param) }

var script = document.createElement('script');
script.src='http://www.example.com/path/handler.php?param1=12345&param2=67890';
document.head.appendChild(script);

The only limit of this approach, is the max length of parameters that you can send to the server. But, you can always send multiple requests.

The global scope in React Native is variable global. Such as global.foo = foo, then you can use global.foo anywhere.

But do not abuse it! In my opinion, global scope may used to store the global config or something like that. Share variables between different views, as your description, you can choose many other solutions(use redux,flux or store them in a higher component), global scope is not a good choice.

A good practice to define global variable is to use a js file. For example global.js

global.foo = foo;
global.bar = bar;

Then, to make sure it is executed when project initialized. For example, import the file in index.js:

import './global.js'
// other code

Now, you can use the global variable anywhere, and don't need to import global.js in each file. Try not to modify them!

As mentioned by top scoring answer by Win you may need to install Microsoft.EntityFrameworkCore.SqlServer NuGet Package, but please note that this question is using asp.net core mvc. In the latest ASP.NET Core 2.1, MS have included what is called a metapackage called Microsoft.AspNetCore.App

https://docs.microsoft.com/en-us/aspnet/core/fundamentals/metapackage-app?view=aspnetcore-2.2

You can see the reference to it if you right-click the ASP.NET Core MVC project in the solution explorer and select Edit Project File

You should see this metapackage if ASP.NET core webapps the using statement

<PackageReference Include="Microsoft.AspNetCore.App" />

Microsoft.EntityFrameworkCore.SqlServer is included in this metapackage. So in your Startup.cs you may only need to add:

using Microsoft.EntityFrameworkCore;

The XLSB format is also dedicated to the macros embeded in an hidden workbook file located in excel startup folder (XLSTART).

A quick & dirty test with a xlsm or xlsb in XLSTART folder:

Measure-Command { $x = New-Object -com Excel.Application ;$x.Visible = $True ; $x.Quit() }

0,89s with a xlsb (binary) versus 1,3s with the same content in xlsm format (xml in a zip file) ... :)

It's Really Simple Just go to your styles.xml change the parent Theme to either Theme.AppCompat.Light.NoActionBar or Theme.AppCompat.NoActionbar and you are done.. :)

But while mocking read-only properties means properties with getter method only you should declare it as virtual otherwise System.NotSupportedException will be thrown because it is only supported in VB as moq internally override and create proxy when we mock anything.

In my case, I had such error since import path was wrong:

Wrong: import Select from "react-select/src/Select"; // it was auto-generated by IDE ;)

Correct: import Select from "react-select";

You can safely delete the WSDL cache files. If you wish to prevent future caching, use:

ini_set("soap.wsdl_cache_enabled", 0);

or dynamically:

$client = new SoapClient('http://somewhere.com/?wsdl', array('cache_wsdl' => WSDL_CACHE_NONE) );

Instead of using "", use 0. Then use conditional formating to color 0 to the backgrounds color, so that it appears blank.

Since blank cells and 0 will have the same behavior in most situations, this may solve the issue.

See the MDN section on Promises. In particular, look at the return type of then().

To log in, the user-agent has to submit a request to the server and wait to receive a response. Since making your application totally stop execution during a request round-trip usually makes for a bad user experience, practically every JS function that logs you in (or performs any other form of server interaction) will use a Promise, or something very much like it, to deliver results asynchronously.

Now, also notice that return statements are always evaluated in the context of the function they appear in. So when you wrote:

let AuthUser = data => {
  return google
    .login(data.username, data.password)
    .then( token => {
      return token;
    });
};

the statement return token; meant that the anonymous function being passed into then() should return the token, not that the AuthUser function should. What AuthUser returns is the result of calling google.login(username, password).then(callback);, which happens to be a Promise.

Ultimately your callback token => { return token; } does nothing; instead, your input to then() needs to be a function that actually handles the token in some way.

Use an array of valid dates format, check docs:

string[] formats = { "d/MM/yyyy", "dd/MM/yyyy" };
DateTime parsedDate;
var isValidFormat= DateTime.TryParseExact(inputString, formats, new CultureInfo("en-US"), DateTimeStyles.None, out parsedDate);

if(isValidFormat)
{
    string.Format("{0:d/MM/yyyy}", parsedDate);
}
else
{
    // maybe throw an Exception
}

The simple solution is follow this screenshot then crash will go away:

Noted: This is Xcode 11.5

I think this will work (based on NonlinearFruit previous answer):

Files.walk(Paths.get("C:/test/ABC/"))
                .sorted(Comparator.reverseOrder())
                .map(Path::toFile)
                .filter(item -> !item.getPath().equals("C:/test/ABC/"))
                .forEach(File::delete);

Cheers!

What about this:

var txt="";
var nyc = {
    fullName: "New York City",
    mayor: "Michael Bloomberg",
    population: 8000000,
    boroughs: 5
};

for (var x in nyc){
    txt += nyc[x];
}

We can use this method:

CONVERT(VARCHAR(10), GETDATE(), 120)

Last parameter changes the format to only to get time or date in specific formats.

Yes, you can indeed. There are three ways of achieving this that I can think of.

1. Add inline styles to the elements.
2. create and append a new <style> element, and add the text to override this style to it.
3. Modify the css rule itself.

Notes:

1. is somewhat messy and adds to the parsing the browser needs to do to render.
2. perhaps my favourite method
3. Not cross-browser, some browsers like it done one way, others a different way, while the remainder just baulk at the idea.

It is debatable as to whether you should use String or use Char[] for this purpose because both have their advantages and disadvantages. It depends on what the user needs.

Since Strings in Java are immutable, whenever some tries to manipulate your string it creates a new Object and the existing String remains unaffected. This could be seen as an advantage for storing a password as a String, but the object remains in memory even after use. So if anyone somehow got the memory location of the object, that person can easily trace your password stored at that location.

Char[] is mutable, but it has the advantage that after its usage the programmer can explicitly clean the array or override values. So when it's done being used it is cleaned and no one could ever know about the information you had stored.

Based on the above circumstances, one can get an idea whether to go with String or to go with Char[] for their requirements.

The raw.githubusercontent.com domain is used to serve unprocessed versions of files stored in GitHub repositories. If you browse to a file on GitHub and then click the Raw link, that's where you'll go.

The URL in your question references the install file in the master branch of the Homebrew/install repository. The rest of that command just retrieves the file and runs ruby on its contents.

I think this works:

start cmd.exe

Striking a similar issue using CakePHP to output a JavaScript script-block using PHP's native json_encode. $contractorCompanies contains values that have single quotation marks and as explained above and expected json_encode($contractorCompanies) doesn't escape them because its valid JSON.

<?php $this->Html->scriptBlock("var contractorCompanies = jQuery.parseJSON( '".(json_encode($contractorCompanies)."' );"); ?>

By adding addslashes() around the JSON encoded string you then escape the quotation marks allowing Cake / PHP to echo the correct javascript to the browser. JS errors disappear.

<?php $this->Html->scriptBlock("var contractorCompanies = jQuery.parseJSON( '".addslashes(json_encode($contractorCompanies))."' );"); ?>

If you do an export with PhpMyAdmin, you can switch sql compatibility mode to 'MSSQL'. That way you just run the exported script against your MS SQL database and you're done.

If you cannot or don't want to use PhpMyAdmin, there's also a compatibility option in mysqldump, but personally I'd rather have PhpMyAdmin do it for me.

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

I would recommend looking at the numpy broadcasting rules.

Explanation without Code

For those wanting an answer without any code behind it (boom-tish) with a story (to help you remember):

Normal Collections - No Notifications

Every now and then I go to NYC and my wife asks me to buy stuff. So I take a shopping list with me. The list has a lot of things on there like:

1. Louis Vuitton handbag ($5000)
2. Clive Christian’s Imperial Majesty Perfume ($215,000 )
3. Gucci Sunglasses ($2000)

hahaha well I"m not buying that stuff. So I cross them off and remove them from the list and I add instead:

1. 12 dozen Titleist golf balls.
2. 12 lb bowling ball.

So I usually come home without the goods and she's never pleased. The thing is that she doesn't know about what i take off the list and what I add onto it; she gets no notifications.

The ObservableCollection - notifications when changes made

Now, whenever I remove something from the list: she get's a notification on her phone (i.e. sms / email etc)!

The observable collection works just the same way. If you add or remove something to or from it: someone is notified. And when they are notified, well then they call you and you'll get a ear-full. Of course the consequences are customisable via the event handler.

That sums it all up!

Try [attr.style]="changeBackground()"

@Justis pointed me to the right direction, but his code did not work for me. This did:

// set the default timezone if not set at php.ini
if (!date_default_timezone_get('date.timezone')) {
    // insert here the default timezone
    date_default_timezone_set('America/New_York');
}

Documentation: http://www.php.net/manual/en/function.date-default-timezone-get.php

This solution is not only for those who does not have full system access. It is necessary for any script when you provide it to anyone else but you. You never know on what server the script will run when you distribute it to someone else.

open notepad++, then drag and drop the folder you want to open as tree view.

OR

File ->open folder as workspace , select the file you want.

You will need to get a DateTime object from your TimeSpan and then you can format it easily.

One possible solution is adding the timespan to any date with zero time value.

var timespan = new TimeSpan(3, 0, 0);
var output = new DateTime().Add(timespan).ToString("hh:mm tt");

The output value will be "03:00 AM" (for english locale).

I'm doing this exact thing, but you need to do some kind of code generation for this to work.

In my solution, I added a project "EnumeratedTypes". This is a console application which gets all of the values from the database and constructs the enums from them. Then it saves all of the enums to an assembly.

The enum generation code is like this:

// Get the current application domain for the current thread
AppDomain currentDomain = AppDomain.CurrentDomain;

// Create a dynamic assembly in the current application domain,
// and allow it to be executed and saved to disk.
AssemblyName name = new AssemblyName("MyEnums");
AssemblyBuilder assemblyBuilder = currentDomain.DefineDynamicAssembly(name,
                                      AssemblyBuilderAccess.RunAndSave);

// Define a dynamic module in "MyEnums" assembly.
// For a single-module assembly, the module has the same name as the assembly.
ModuleBuilder moduleBuilder = assemblyBuilder.DefineDynamicModule(name.Name,
                                  name.Name + ".dll");

// Define a public enumeration with the name "MyEnum" and an underlying type of Integer.
EnumBuilder myEnum = moduleBuilder.DefineEnum("EnumeratedTypes.MyEnum",
                         TypeAttributes.Public, typeof(int));

// Get data from database
MyDataAdapter someAdapter = new MyDataAdapter();
MyDataSet.MyDataTable myData = myDataAdapter.GetMyData();

foreach (MyDataSet.MyDataRow row in myData.Rows)
{
    myEnum.DefineLiteral(row.Name, row.Key);
}

// Create the enum
myEnum.CreateType();

// Finally, save the assembly
assemblyBuilder.Save(name.Name + ".dll");

My other projects in the solution reference this generated assembly. As a result, I can then use the dynamic enums in code, complete with intellisense.

Then, I added a post-build event so that after this "EnumeratedTypes" project is built, it runs itself and generates the "MyEnums.dll" file.

By the way, it helps to change the build order of your project so that "EnumeratedTypes" is built first. Otherwise, once you start using your dynamically generated .dll, you won't be able to do a build if the .dll ever gets deleted. (Chicken and egg kind of problem -- your other projects in the solution need this .dll to build properly, and you can't create the .dll until you build your solution...)

I got most of the above code from this msdn article.

Hope this helps!

This program is the bug free and enhanced version of the above MD5 cracker that reads the file containing list of hashed passwords and checks it against hashed word from the English dictionary word list. Hope it is helpful.

I downloaded the English dictionary from the following link https://github.com/dwyl/english-words

# md5cracker.py
# English Dictionary https://github.com/dwyl/english-words 

import hashlib, sys

hash_file = 'exercise\hashed.txt'
wordlist = 'data_sets\english_dictionary\words.txt'

try:
    hashdocument = open(hash_file,'r')
except IOError:
    print('Invalid file.')
    sys.exit()
else:
    count = 0
    for hash in hashdocument:
        hash = hash.rstrip('\n')
        print(hash)
        i = 0
        with open(wordlist,'r') as wordlistfile:
            for word in wordlistfile:
                m = hashlib.md5()
                word = word.rstrip('\n')            
                m.update(word.encode('utf-8'))
                word_hash = m.hexdigest()
                if word_hash==hash:
                    print('The word, hash combination is ' + word + ',' + hash)
                    count += 1
                    break
                i += 1
        print('Itiration is ' + str(i))
    if count == 0:
        print('The hash given does not correspond to any supplied word in the wordlist.')
    else:
        print('Total passwords identified is: ' + str(count))
sys.exit()

If you are ok to do transformation, you may try this.

DocumentBuilderFactory domFact = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = domFact.newDocumentBuilder();
Document doc = builder.parse(st);
DOMSource domSource = new DOMSource(doc);
StringWriter writer = new StringWriter();
StreamResult result = new StreamResult(writer);
TransformerFactory tf = TransformerFactory.newInstance();
Transformer transformer = tf.newTransformer();
transformer.transform(domSource, result);
System.out.println("XML IN String format is: \n" + writer.toString());

Instead, you can collect the output in a test result.

You can't supply input, but you can easily provide several tests with different command line arguments, each test collecting the output.

If your goal is debugging, this is a low effort way of offering a repeatable debugging scenario.

namespace Commandline.Test
{
    using Microsoft.VisualStudio.TestTools.UnitTesting;

    [TestClass]
    public class CommandlineTests
    {
        [TestMethod]
        public void RunNoArguments()
        {
            Commandline.Program.Main(new string[0]);
        }
    }
}

I think you're looking for the stat function (perldoc -f stat)

In particular, the 9th field (10th, index #9) of the returned list is the last modify time of the file in seconds since the epoch.

So:

my $last_modified = (stat($fh))[9];

Try this:

 List<Double> l1= new ArrayList<Double>();
 l1.add(1.38);
 l1.add(2.56);
 l1.add(4.3);

This is how I did it with a large (50 GB) file:

I tried 2 different ways: the first, reading the file into memory and using Regex Replace or String Replace. Then I appended the entire string to a temporary file.

The first method works well for a few Regex replacements, but Regex.Replace or String.Replace could cause out of memory error if you do many replaces in a large file.

The second is by reading the temp file line by line and manually building each line using StringBuilder and appending each processed line to the result file. This method was pretty fast.

static void ProcessLargeFile()
{
        if (File.Exists(outFileName)) File.Delete(outFileName);

        string text = File.ReadAllText(inputFileName, Encoding.UTF8);

        // EX 1 This opens entire file in memory and uses Replace and Regex Replace --> might cause out of memory error

        text = text.Replace("</text>", "");

        text = Regex.Replace(text, @"\<ref.*?\</ref\>", "");

        File.WriteAllText(outFileName, text);




        // EX 2 This reads file line by line 

        if (File.Exists(outFileName)) File.Delete(outFileName);

        using (var sw = new StreamWriter(outFileName))      
        using (var fs = File.OpenRead(inFileName))
        using (var sr = new StreamReader(fs, Encoding.UTF8)) //use UTF8 encoding or whatever encoding your file uses
        {
            string line, newLine;

            while ((line = sr.ReadLine()) != null)
            {
              //note: call your own replace function or use String.Replace here 
              newLine = Util.ReplaceDoubleBrackets(line);

              sw.WriteLine(newLine);
            }
        }
    }

    public static string ReplaceDoubleBrackets(string str)
    {
        //note: this replaces the first occurrence of a word delimited by [[ ]]

        //replace [[ with your own delimiter
        if (str.IndexOf("[[") < 0)
            return str;

        StringBuilder sb = new StringBuilder();

        //this part gets the string to replace, put this in a loop if more than one occurrence  per line.
        int posStart = str.IndexOf("[[");
        int posEnd = str.IndexOf("]]");
        int length = posEnd - posStart;


        // ... code to replace with newstr


        sb.Append(newstr);

        return sb.ToString();
    }

Like bruno said, you're better configuring it yourself. Here's how I do it. Start by creating a properties file (/etc/myapp/config.properties).

javax.net.ssl.keyStore = /etc/myapp/keyStore
javax.net.ssl.keyStorePassword = 123456

Then load the properties to your environment from your code. This makes your application configurable.

FileInputStream propFile = new FileInputStream("/etc/myapp/config.properties");
Properties p = new Properties(System.getProperties());
p.load(propFile);
System.setProperties(p);

I think you summed it up quite well in your own answer.

In the process of UTF-8-ing(?) from end to end you might also want to make sure java itself is using UTF-8. Use -Dfile.encoding=utf-8 as parameter to the JVM (can be configured in catalina.bat).

Change an element's class in vanilla JavaScript with IE6 support

You may try to use node attributes property to keep compatibility with old browsers even IE6:

function getClassNode(element) {_x000D_
  for (var i = element.attributes.length; i--;)_x000D_
    if (element.attributes[i].nodeName === 'class')_x000D_
      return element.attributes[i];_x000D_
}_x000D_
_x000D_
function removeClass(classNode, className) {_x000D_
  var index, classList = classNode.value.split(' ');_x000D_
  if ((index = classList.indexOf(className)) > -1) {_x000D_
    classList.splice(index, 1);_x000D_
    classNode.value = classList.join(' ');_x000D_
  }_x000D_
}_x000D_
_x000D_
function hasClass(classNode, className) {_x000D_
  return classNode.value.indexOf(className) > -1;_x000D_
}_x000D_
_x000D_
function addClass(classNode, className) {_x000D_
  if (!hasClass(classNode, className))_x000D_
    classNode.value += ' ' + className;_x000D_
}_x000D_
_x000D_
document.getElementById('message').addEventListener('click', function() {_x000D_
  var classNode = getClassNode(this);_x000D_
  var className = hasClass(classNode, 'red') && 'blue' || 'red';_x000D_
_x000D_
  removeClass(classNode, 'red');_x000D_
  removeClass(classNode, 'blue');_x000D_
_x000D_
  addClass(classNode, className);_x000D_
})

.red {_x000D_
  color: red;_x000D_
}_x000D_
.red:before {_x000D_
  content: 'I am red! ';_x000D_
}_x000D_
.red:after {_x000D_
  content: ' again';_x000D_
}_x000D_
.blue {_x000D_
  color: blue;_x000D_
}_x000D_
.blue:before {_x000D_
  content: 'I am blue! '_x000D_
}

<span id="message" class="">Click me</span>

That's done for header files so that the contents only appear once in each preprocessed source file, even if it's included more than once (usually because it's included from other header files). The first time it's included, the symbol CLASS_H (known as an include guard) hasn't been defined yet, so all the contents of the file are included. Doing this defines the symbol, so if it's included again, the contents of the file (inside the #ifndef/#endif block) are skipped.

There's no need to do this for the source file itself since (normally) that's not included by any other files.

For your last question, class.h should contain the definition of the class, and declarations of all its members, associated functions, and whatever else, so that any file that includes it has enough information to use the class. The implementations of the functions can go in a separate source file; you only need the declarations to call them.

Firstly, in a character class [...] most characters don't need escaping - they are just literals.

So, your regex should be:

"[\[\]?*+|{}\\()@.\n\r]"

This compiles for me.

You can simply run

$(document).keyup(function(e) {
    console.log(e.keyCode);
});

to see the codes of pressed keys in the browser console.

Or you can find key codes here: https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/keyCode#Numpad_keys

Simply use if ($web). This is true if the variable has any truthy value.

You don't need isset or empty since you know the variable exists, since you have just set it in the previous line.

The array you created by Dim s(0) As String IS NOT EMPTY

In VB.Net, the subscript you use in the array is index of the last element. VB.Net by default starts indexing at 0, so you have an array that already has one element.

You should instead try using System.Collections.Specialized.StringCollection or (even better) System.Collections.Generic.List(Of String). They amount to pretty much the same thing as an array of string, except they're loads better for adding and removing items. And let's be honest: you'll rarely create an empty string array without wanting to add at least one element to it.

If you really want an empty string array, declare it like this:

Dim s As String()

or

Dim t() As String

If you want to force the whiskers to extend to the max and min values, you can tweak the coef argument. Default value for coef is 1.5 (i.e. default length of the whiskers is 1.5 times the IQR).

# Load package and create a dummy data frame with outliers 
#(using example from Ramnath's answer above)
library(ggplot2)
df = data.frame(y = c(-100, rnorm(100), 100))

# create boxplot that includes outliers
p0 = ggplot(df, aes(y = y)) + geom_boxplot(aes(x = factor(1)))

# create boxplot where whiskers extend to max and min values
p1 = ggplot(df, aes(y = y)) + geom_boxplot(aes(x = factor(1)), coef = 500)

If you just want to bypass verification, you can create a new SSLContext. By default newly created contexts use CERT_NONE.

Be careful with this as stated in section 17.3.7.2.1

When calling the SSLContext constructor directly, CERT_NONE is the default. Since it does not authenticate the other peer, it can be insecure, especially in client mode where most of time you would like to ensure the authenticity of the server you’re talking to. Therefore, when in client mode, it is highly recommended to use CERT_REQUIRED.

But if you just want it to work now for some other reason you can do the following, you'll have to import ssl as well:

input = input.replace("!web ", "")      
url = "https://domainsearch.p.mashape.com/index.php?name=" + input
req = urllib2.Request(url, headers={ 'X-Mashape-Key': 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX' })
gcontext = ssl.SSLContext()  # Only for gangstars
info = urllib2.urlopen(req, context=gcontext).read()
Message.Chat.SendMessage ("" + info)

This should get round your problem but you're not really solving any of the issues, but you won't see the [SSL: CERTIFICATE_VERIFY_FAILED] because you now aren't verifying the cert!

To add to the above, if you want to know more about why you are seeing these issues you will want to have a look at PEP 476.

This PEP proposes to enable verification of X509 certificate signatures, as well as hostname verification for Python's HTTP clients by default, subject to opt-out on a per-call basis. This change would be applied to Python 2.7, Python 3.4, and Python 3.5.

There is an advised opt out which isn't dissimilar to my advice above:

import ssl

# This restores the same behavior as before.
context = ssl._create_unverified_context()
urllib.urlopen("https://no-valid-cert", context=context)

It also features a highly discouraged option via monkeypatching which you don't often see in python:

import ssl

ssl._create_default_https_context = ssl._create_unverified_context

Which overrides the default function for context creation with the function to create an unverified context.

Please note with this as stated in the PEP:

This guidance is aimed primarily at system administrators that wish to adopt newer versions of Python that implement this PEP in legacy environments that do not yet support certificate verification on HTTPS connections. For example, an administrator may opt out by adding the monkeypatch above to sitecustomize.py in their Standard Operating Environment for Python. Applications and libraries SHOULD NOT be making this change process wide (except perhaps in response to a system administrator controlled configuration setting).

If you want to read a paper on why not validating certs is bad in software you can find it here!

You can center absolute items by providing the left property with the width of the device divided by two and subtracting out half of the element you'd like to center's width.

For example, your style might look something like this.

bottom: {
    position: 'absolute',
    left: (Dimensions.get('window').width / 2) - 25,
    top: height*0.93,
}

An easy solution to center text horizontally and vertically in SVG:

1. Set the position of the text to the absolute center of the element in which you want to center it:

   • If it's the parent, you could just do x="50%" y ="50%".
   • If it's another element, x would be the x of that element + half its width (and similar for y but with the height).

2. Use the text-anchor property to center the text horizontally with the value middle:

   middle

   The rendered characters are aligned such that the geometric middle of the resulting rendered text is at the initial current text position.

3. Use the dominant-baseline property to center the text vertically with the value middle (or depending on how you want it to look like, you may want to do central)

Here is a simple demo:

<svg width="200" height="100">_x000D_
  <rect x="0" y="0" width="200" height="100" stroke="red" stroke-width="3px" fill="white"/>_x000D_
  <text x="50%" y="50%" dominant-baseline="middle" text-anchor="middle">TEXT</text>    _x000D_
</svg>

Hmm, not quite sure what your question is.

In the title you ask about Databases (DB), whereas in the body of your text you ask about Database Management Systems (DBMS). The two are completely different and require different answers.

A DBMS is a tool that allows you to access a DB.

Other than the data itself, a DB is the concept of how that data is structured.

So just like you can program with Oriented Object methodology with a non-OO powered compiler, or vice-versa, so can you set-up a relational database without an RDBMS or use an RDBMS to store non-relational data.

I'll focus on what Relational Database (RDB) means and leave the discussion about what systems do to others.

A relational database (the concept) is a data structure that allows you to link information from different 'tables', or different types of data buckets. A data bucket must contain what is called a key or index (that allows to uniquely identify any atomic chunk of data within the bucket). Other data buckets may refer to that key so as to create a link between their data atoms and the atom pointed to by the key.

A non-relational database just stores data without explicit and structured mechanisms to link data from different buckets to one another.

As to implementing such a scheme, if you have a paper file with an index and in a different paper file you refer to the index to get at the relevant information, then you have implemented a relational database, albeit quite a simple one. So you see that you do not even need a computer (of course it can become tedious very quickly without one to help), similarly you do not need an RDBMS, though arguably an RDBMS is the right tool for the job. That said there are variations as to what the different tools out there can do so choosing the right tool for the job may not be all that straightforward.

I hope this is layman terms enough and is helpful to your understanding.

Here's a more general technique for left-padding to any desired width:

declare @x     int     = 123 -- value to be padded
declare @width int     = 25  -- desired width
declare @pad   char(1) = '0' -- pad character

select right_justified = replicate(
                           @pad ,
                           @width-len(convert(varchar(100),@x))
                           )
                       + convert(varchar(100),@x)

However, if you're dealing with negative values, and padding with leading zeroes, neither this, nor other suggested technique will work. You'll get something that looks like this:

00-123

[Probably not what you wanted]

So … you'll have to jump through some additional hoops Here's one approach that will properly format negative numbers:

declare @x     float   = -1.234
declare @width int     = 20
declare @pad   char(1) = '0'

select right_justified = stuff(
         convert(varchar(99),@x) ,                            -- source string (converted from numeric value)
         case when @x < 0 then 2 else 1 end ,                 -- insert position
         0 ,                                                  -- count of characters to remove from source string
         replicate(@pad,@width-len(convert(varchar(99),@x)) ) -- text to be inserted
         )

One should note that the convert() calls should specify an [n]varchar of sufficient length to hold the converted result with truncation.

Depends on what your native code does, but v7a has support for hardware floating point operations, which makes a huge difference. armeabi will work fine on all devices, but will be a lot slower, and won't take advantage of newer devices' CPU capabilities. Do take some benchmarks for your particular application, but removing the armeabi-v7a binaries is generally not a good idea. If you need to reduce size, you might want to have two separate apks for older (armeabi) and newer (armeabi-v7a) devices.

A filter argument with a trailing * can be evaluated almost instantaneously via an index lookup. A leading * implies a sequential search through the index, so it is O(N). It will take ages.

I suggest you reconsider the requirement.

NullPointerException is a run-time exception which is not recommended to catch it, but instead avoid it:

if(someVariable != null) someVariable.doSomething();
else
{
    // do something else
}

Environment.SetEnvironmentVariable("Variable name", value, EnvironmentVariableTarget.User);

If you want to show just numbers without characters, put this line of code inside your XML file android:inputType="number". The output:

If you want to show a number keyboard that also shows characters, put android:inputType="phone" on your XML. The output (with characters):

And if you want to show a number keyboard that masks your input just like a password, put android:inputType="numberpassword". The output:

I'm really sorry if I only post the links of the screenshot, I want to do research on how to do really post images here but it might consume my time so here it is. I hope my post can help other people. Yes, my answer is duplicate with other answers posted here but to save other people's time that they might need to run their code before seeing the output, my post might save you some time.

Since python is installed on nearly every non-Windows OS by default now, the only thing you really need to make sure of is that all of the non-standard libraries you use are installed.

Having said that, it is possible to build executables that include the python interpreter, and any libraries you use. This is likely to create a large executable, however.

MacOS X even includes support in the Xcode IDE for creating full standalone GUI apps. These can be run by any user running OS X.

If you set up a click binding in Knockout the event is passed as the second parameter. You can use the event to obtain the element that the click occurred on and perform whatever action you want.

Here is a fiddle that demonstrates: http://jsfiddle.net/jearles/xSKyR/

Alternatively, you could create your own custom binding, which will receive the element it is bound to as the first parameter. On init you could attach your own click event handler to do any actions you wish.

http://knockoutjs.com/documentation/custom-bindings.html

HTML

<div>
    <button data-bind="click: clickMe">Click Me!</button>
</div>

Js

var ViewModel = function() {
    var self = this;
    self.clickMe = function(data,event) {

      var target = event.target || event.srcElement;

      if (target.nodeType == 3) // defeat Safari bug
        target = target.parentNode;

      target.parentNode.innerHTML = "something";
    }
}

ko.applyBindings(new ViewModel());

WifiManager wm = (WifiManager) getSystemService(WIFI_SERVICE);
String ipAddress = BigInteger.valueOf(wm.getDhcpInfo().netmask).toString();

None of the solution above worked for me. But following did :

1. Open the current folder in Windows Explorer
2. Move the folder manually to the desired location
3. Open .csproj file. VS will then automatically create the .sln file.

I decided to write a class from this thread that may be helpful to others. Note that this is currently intended to write in the "files" directory only (e.g. does not write to "sdcard" paths).

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

import android.content.Context;

public class AndroidFileFunctions {

    public static String getFileValue(String fileName, Context context) {
        try {
            StringBuffer outStringBuf = new StringBuffer();
            String inputLine = "";
            /*
             * We have to use the openFileInput()-method the ActivityContext
             * provides. Again for security reasons with openFileInput(...)
             */
            FileInputStream fIn = context.openFileInput(fileName);
            InputStreamReader isr = new InputStreamReader(fIn);
            BufferedReader inBuff = new BufferedReader(isr);
            while ((inputLine = inBuff.readLine()) != null) {
                outStringBuf.append(inputLine);
                outStringBuf.append("\n");
            }
            inBuff.close();
            return outStringBuf.toString();
        } catch (IOException e) {
            return null;
        }
    }

    public static boolean appendFileValue(String fileName, String value,
            Context context) {
        return writeToFile(fileName, value, context, Context.MODE_APPEND);
    }

    public static boolean setFileValue(String fileName, String value,
            Context context) {
        return writeToFile(fileName, value, context,
                Context.MODE_WORLD_READABLE);
    }

    public static boolean writeToFile(String fileName, String value,
            Context context, int writeOrAppendMode) {
        // just make sure it's one of the modes we support
        if (writeOrAppendMode != Context.MODE_WORLD_READABLE
                && writeOrAppendMode != Context.MODE_WORLD_WRITEABLE
                && writeOrAppendMode != Context.MODE_APPEND) {
            return false;
        }
        try {
            /*
             * We have to use the openFileOutput()-method the ActivityContext
             * provides, to protect your file from others and This is done for
             * security-reasons. We chose MODE_WORLD_READABLE, because we have
             * nothing to hide in our file
             */
            FileOutputStream fOut = context.openFileOutput(fileName,
                    writeOrAppendMode);
            OutputStreamWriter osw = new OutputStreamWriter(fOut);
            // Write the string to the file
            osw.write(value);
            // save and close
            osw.flush();
            osw.close();
        } catch (IOException e) {
            return false;
        }
        return true;
    }

    public static void deleteFile(String fileName, Context context) {
        context.deleteFile(fileName);
    }
}

Here's a simple method I've used on Windows 7 through Windows 10. Basically, I simply use the "IF EXIST" command to check for the Windows\System32\WDI\LogFiles folder. The WDI folder exists on every install of Windows from at least 7 onward, and it requires admin privileges to access. The WDI folder always has a LogFiles folder inside it. So, running "IF EXIST" on the WDI\LogFiles folder will return true if run as admin, and false if not run as admin. This can be used in a batch file to check privilege level, and branch to whichever commands you desire based on that result.

Here's a brief snippet of example code:

IF EXIST %SYSTEMROOT%\SYSTEM32\WDI\LOGFILES GOTO GOTADMIN
(Commands for running with normal privileges)

:GOTADMIN
(Commands for running with admin privileges)

Keep in mind that this method assumes the default security permissions have not been modified on the WDI folder (which is unlikely to happen in most situations, but please see caveat #2 below). Even in that case, it's simply a matter of modifying the code to check for a different common file/folder that requires admin access (System32\config\SAM may be a good alternate candidate), or you could even create your own specifically for that purpose.

There are two caveats about this method though:

1. Disabling UAC will likely break it through the simple fact that everything would be run as admin anyway.

2. Attempting to open the WDI folder in Windows Explorer and then clicking "Continue" when prompted will add permanent access rights for that user account, thus breaking my method. If this happens, it can be fixed by removing the user account from the WDI folder security permissions. If for any reason the user MUST be able to access the WDI folder with Windows Explorer, then you'd have to modify the code to check a different folder (as mentioned above, creating your own specifically for this purpose may be a good choice).

So, admittedly my method isn't perfect since it can be broken, but it's a relatively quick method that's easy to implement, is equally compatible with all versions of Windows 7, 8 and 10, and provided I stay mindful of the mentioned caveats has been 100% effective for me.

If you want the position relative to the document then:

$("#myTable").offset().top;

but often you will want the position relative to the closest positioned parent:

$("#myTable").position().top;

In Spring MVC, all incoming requests go through a single servlet. This servlet - DispatcherServlet - is the front controller. Front controller is a typical design pattern in the web applications development. In this case, a single servlet receives all requests and transfers them to all other components of the application.

The task of the DispatcherServlet is to send request to the specific Spring MVC controller.

Usually we have a lot of controllers and DispatcherServlet refers to one of the following mappers in order to determine the target controller:

• BeanNameUrlHandlerMapping;
• ControllerBeanNameHandlerMapping;
• ControllerClassNameHandlerMapping;
• DefaultAnnotationHandlerMapping;
• SimpleUrlHandlerMapping.

If no configuration is performed, the DispatcherServlet uses BeanNameUrlHandlerMapping and DefaultAnnotationHandlerMapping by default.

When the target controller is identified, the DispatcherServlet sends request to it. The controller performs some work according to the request (or delegate it to the other objects), and returns back to the DispatcherServlet with the Model and the name of the View.

The name of the View is only a logical name. This logical name is then used to search for the actual View (to avoid coupling with the controller and specific View). Then DispatcherServlet refers to the ViewResolver and maps the logical name of the View to the specific implementation of the View.

Some possible Implementations of the ViewResolver are:

• BeanNameViewResolver;
• ContentNegotiatingViewResolver;
• FreeMarkerViewResolver;
• InternalResourceViewResolver;
• JasperReportsViewResolver;
• ResourceBundleViewResolver;
• TilesViewResolver;
• UrlBasedViewResolver;
• VelocityLayoutViewResolver;
• VelocityViewResolver;
• XmlViewResolver;
• XsltViewResolver.

When the DispatcherServlet determines the view that will display the results it will be rendered as the response.

Finally, the DispatcherServlet returns the Response object back to the client.

At the risk of irritating you;

You're asking the wrong question. You don't need a reason NOT to deviate from the defaults, but the other way around. You need a reason to do so. Timeouts are absolutely essential when running a web server and to disable that setting without a reason is inherently contrary to good practice, even if it's running on a web server that happens to have a timeout directive of its own.

Now, as for the real answer; probably it doesn't matter at all in this particular case, but it's bad practice to go by the setting of a separate system. What if the script is later run on a different server with a different timeout? If you can safely say that it will never happen, fine, but good practice is largely about accounting for seemingly unlikely events and not unnecessarily tying together the settings and functionality of completely different systems. The dismissal of such principles is responsible for a lot of pointless incompatibilities in the software world. Almost every time, they are unforeseen.

What if the web server later is set to run some other runtime environment which only inherits the timeout setting from the web server? Let's say for instance that you later need a 15-year-old CGI program written in C++ by someone who moved to a different continent, that has no idea of any timeout except the web server's. That might result in the timeout needing to be changed and because PHP is pointlessly relying on the web server's timeout instead of its own, that may cause problems for the PHP script. Or the other way around, that you need a lesser web server timeout for some reason, but PHP still needs to have it higher.

It's just not a good idea to tie the PHP functionality to the web server because the web server and PHP are responsible for different roles and should be kept as functionally separate as possible. When the PHP side needs more processing time, it should be a setting in PHP simply because it's relevant to PHP, not necessarily everything else on the web server.

In short, it's just unnecessarily conflating the matter when there is no need to.

Last but not least, 'stillstanding' is right; you should at least rather use set_time_limit() than ini_set().

Hope this wasn't too patronizing and irritating. Like I said, probably it's fine under your specific circumstances, but it's good practice to not assume your circumstances to be the One True Circumstance. That's all. :)

For conciseness I'd use the SeriesGroupBy:

In [11]: c = df.groupby(['state', 'office_id'])['sales'].sum().rename("count")

In [12]: c
Out[12]:
state  office_id
AZ     2            925105
       4            592852
       6            362198
CA     1            819164
       3            743055
       5            292885
CO     1            525994
       3            338378
       5            490335
WA     2            623380
       4            441560
       6            451428
Name: count, dtype: int64

In [13]: c / c.groupby(level=0).sum()
Out[13]:
state  office_id
AZ     2            0.492037
       4            0.315321
       6            0.192643
CA     1            0.441573
       3            0.400546
       5            0.157881
CO     1            0.388271
       3            0.249779
       5            0.361949
WA     2            0.411101
       4            0.291196
       6            0.297703
Name: count, dtype: float64

For multiple groups you have to use transform (using Radical's df):

In [21]: c =  df.groupby(["Group 1","Group 2","Final Group"])["Numbers I want as percents"].sum().rename("count")

In [22]: c / c.groupby(level=[0, 1]).transform("sum")
Out[22]:
Group 1  Group 2  Final Group
AAHQ     BOSC     OWON           0.331006
                  TLAM           0.668994
         MQVF     BWSI           0.288961
                  FXZM           0.711039
         ODWV     NFCH           0.262395
...
Name: count, dtype: float64

This seems to be slightly more performant than the other answers (just less than twice the speed of Radical's answer, for me ~0.08s).

You can always use a hidden div and use javascript to "popup" the div and have buttons that are like yes and or no. Pretty easy stuff to do.

Okay, first a few terms slightly oversimplified.

In git, a tag (like many other things) is what's called a treeish. It's a way of referring to a point in in the history of the project. Treeishes can be a tag, a commit, a date specifier, an ordinal specifier or many other things.

Now a branch is just like a tag but is movable. When you are "on" a branch and make a commit, the branch is moved to the new commit you made indicating it's current position.

Your HEAD is pointer to a branch which is considered "current". Usually when you clone a repository, HEAD will point to master which in turn will point to a commit. When you then do something like git checkout experimental, you switch the HEAD to point to the experimental branch which might point to a different commit.

Now the explanation.

When you do a git checkout v2.0, you are switching to a commit that is not pointed to by a branch. The HEAD is now "detached" and not pointing to a branch. If you decide to make a commit now (as you may), there's no branch pointer to update to track this commit. Switching back to another commit will make you lose this new commit you've made. That's what the message is telling you.

Usually, what you can do is to say git checkout -b v2.0-fixes v2.0. This will create a new branch pointer at the commit pointed to by the treeish v2.0 (a tag in this case) and then shift your HEAD to point to that. Now, if you make commits, it will be possible to track them (using the v2.0-fixes branch) and you can work like you usually would. There's nothing "wrong" with what you've done especially if you just want to take a look at the v2.0 code. If however, you want to make any alterations there which you want to track, you'll need a branch.

You should spend some time understanding the whole DAG model of git. It's surprisingly simple and makes all the commands quite clear.

Go to this link

Download version tar.gz for windows and just extract files to the folder by your needs. On the left pane, you can select which version of openjdk to download

Tutorial: unzip as expected. You need to set system variable PATH to include your directory with openjdk so you can type java -version in console.

JDK vs OpenJDK

If you are in Windows and the error message shows VT-x is not available make sure Hyper-V is disabled in Windows components.

Try the following:

for i = 1:4
    result = strcat('f',int2str(i));
end

If you use this for naming several files that your code generates, you are able to concatenate more parts to the name. For example, with the extension at the end and address at the beginning:

filename = strcat('c:\...\name',int2str(i),'.png'); 

Its very simple . Create another property for password and Bind this with TextBox

But all input operations perform with actual password property

private string _Password;

    public string PasswordChar
    {
        get
        {
            string szChar = "";

            foreach(char szCahr in _Password)
            {
                szChar = szChar + "*";
            }

            return szChar;
        }

        set
        {
            _PasswordChar = value; NotifyPropertyChanged();
        }
    }

public string Password { get { return _Password; }

        set
        {
            _Password = value; NotifyPropertyChanged();
            PasswordChar = _Password;
        }
    }

The problem with your code is that the your script is executed prior to the html element being available. Because of the that var comment is an empty array.

So you should move your script after the html element is available.

Also, getElementsByClassName returns html collection, so if you need to add event Listener to an element, you will need to do something like following

comment[0].addEventListener('click' , showComment , false ) ; 

If you want to add event listener to all the elements, then you will need to loop through them

for (var i = 0 ; i < comment.length; i++) {
   comment[i].addEventListener('click' , showComment , false ) ; 
}

If $AccountNumber or $Balance is a node-set, then this behavior could easily happen. It's not because and is being treated as or.

For example, if $AccountNumber referred to nodes with the values 12345 and 66 and $Balance referred to nodes with the values 55 and 0, then $AccountNumber != '12345' would be true (because 66 is not equal to 12345) and $Balance != '0' would be true (because 55 is not equal to 0).

I'd suggest trying this instead:

<xsl:when test="not($AccountNumber = '12345' or $Balance = '0')">

$AccountNumber = '12345' or $Balance = '0' will be true any time there is an $AccountNumber with the value 12345 or there is a $Balance with the value 0, and if you apply not() to that, you will get a false result.

Maybe not as clean or efficient as the already posted solutions, but how about the .each() function? E.g:

var mvar = "";
$(".mbox").each(function() {
    console.log($(this).html());
    mvar += $(this).html();
});
console.log(mvar);

I have used the below methods to convert the JSON to XML

List <Item> items;
public void LoadJsonAndReadToXML() {
  using(StreamReader r = new StreamReader(@ "E:\Json\overiddenhotelranks.json")) {
    string json = r.ReadToEnd();
    items = JsonConvert.DeserializeObject <List<Item>> (json);
    ReadToXML();
  }
}

And

public void ReadToXML() {
  try {
    var xEle = new XElement("Items",
      from item in items select new XElement("Item",
        new XElement("mhid", item.mhid),
        new XElement("hotelName", item.hotelName),
        new XElement("destination", item.destination),
        new XElement("destinationID", item.destinationID),
        new XElement("rank", item.rank),
        new XElement("toDisplayOnFod", item.toDisplayOnFod),
        new XElement("comment", item.comment),
        new XElement("Destinationcode", item.Destinationcode),
        new XElement("LoadDate", item.LoadDate)
      ));

    xEle.Save("E:\\employees.xml");
    Console.WriteLine("Converted to XML");
  } catch (Exception ex) {
    Console.WriteLine(ex.Message);
  }
  Console.ReadLine();
}

I have used the class named Item to represent the elements

public class Item {
  public int mhid { get; set; }
  public string hotelName { get; set; }
  public string destination { get; set; }
  public int destinationID { get; set; }
  public int rank { get; set; }
  public int toDisplayOnFod { get; set; }
  public string comment { get; set; }
  public string Destinationcode { get; set; }
  public string LoadDate { get; set; }
}

It works....

Building on Oded's answer, you could also set the default option but not make it a selectable option if it's just dummy text. For example you could do:

<option selected="selected" disabled="disabled">Select a language</option>

This would show "Select a language" before the user clicks the select box but the user wouldn't be able to select it because of the disabled attribute.

Try this. It works on my computer.

set -g mouse on

commons-collections4-x.x.jar definitely solve this problem but Apache has removed the Interface ListValuedMap from commons-Collections4-4.0.jar so use updated version 4.1 it has the required classes and Interfaces.

Refer here if you want to read Excel (2003 or 2007+) using java code.

http://www.codejava.net/coding/how-to-read-excel-files-in-java-using-apache-poi

Simplest way I could think of: add a class.

Simply add a class (on any element) and check inside the interval if it's there. This is more reliable, customisable and cross-language than any other way, I believe.

var i = 0;_x000D_
this.setInterval(function() {_x000D_
  if(!$('#counter').hasClass('pauseInterval')) { //only run if it hasn't got this class 'pauseInterval'_x000D_
    console.log('Counting...');_x000D_
    $('#counter').html(i++); //just for explaining and showing_x000D_
  } else {_x000D_
    console.log('Stopped counting');_x000D_
  }_x000D_
}, 500);_x000D_
_x000D_
/* In this example, I'm adding a class on mouseover and remove it again on mouseleave. You can of course do pretty much whatever you like */_x000D_
$('#counter').hover(function() { //mouse enter_x000D_
    $(this).addClass('pauseInterval');_x000D_
  },function() { //mouse leave_x000D_
    $(this).removeClass('pauseInterval');_x000D_
  }_x000D_
);_x000D_
_x000D_
/* Other example */_x000D_
$('#pauseInterval').click(function() {_x000D_
  $('#counter').toggleClass('pauseInterval');_x000D_
});

body {_x000D_
  background-color: #eee;_x000D_
  font-family: Calibri, Arial, sans-serif;_x000D_
}_x000D_
#counter {_x000D_
  width: 50%;_x000D_
  background: #ddd;_x000D_
  border: 2px solid #009afd;_x000D_
  border-radius: 5px;_x000D_
  padding: 5px;_x000D_
  text-align: center;_x000D_
  transition: .3s;_x000D_
  margin: 0 auto;_x000D_
}_x000D_
#counter.pauseInterval {_x000D_
  border-color: red;  _x000D_
}

<!-- you'll need jQuery for this. If you really want a vanilla version, ask -->_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
_x000D_
_x000D_
<p id="counter">&nbsp;</p>_x000D_
<button id="pauseInterval">Pause/unpause</button></p>

DELETE FROM blob 
WHERE fileid NOT IN 
       (SELECT id 
        FROM files 
        WHERE id is NOT NULL/*This line is unlikely to be needed 
                               but using NOT IN...*/
      )

Try with array_intersect method

$id = $access_data['Privilege']['id']; 

if(count(array_intersect($id,$user_access_arr)) == 0){

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

The technique we use at work is to request the javascript file using an AJAX request and then eval() the return. If you're using the prototype library, they support this functionality in their Ajax.Request call.

Set PYTHONPATH environment variable in root project directory.

Considering UNIX-like:

export PYTHONPATH=.

You could use regular expressions as it's better for word matching compared to strpos, as mentioned by other users. A strpos check for are will also return true for strings such as: fare, care, stare, etc. These unintended matches can simply be avoided in regular expression by using word boundaries.

A simple match for are could look something like this:

$a = 'How are you?';

if (preg_match('/\bare\b/', $a)) {
    echo 'true';
}

On the performance side, strpos is about three times faster. When I did one million compares at once, it took preg_match 1.5 seconds to finish and for strpos it took 0.5 seconds.

Edit: In order to search any part of the string, not just word by word, I would recommend using a regular expression like

$a = 'How are you?';
$search = 'are y';
if(preg_match("/{$search}/i", $a)) {
    echo 'true';
}

The i at the end of regular expression changes regular expression to be case-insensitive, if you do not want that, you can leave it out.

Now, this can be quite problematic in some cases as the $search string isn't sanitized in any way, I mean, it might not pass the check in some cases as if $search is a user input they can add some string that might behave like some different regular expression...

Also, here's a great tool for testing and seeing explanations of various regular expressions Regex101

To combine both sets of functionality into a single multi-purpose function (including with selectable case sensitivity), you could use something like this:

function FindString($needle,$haystack,$i,$word)
{   // $i should be "" or "i" for case insensitive
    if (strtoupper($word)=="W")
    {   // if $word is "W" then word search instead of string in string search.
        if (preg_match("/\b{$needle}\b/{$i}", $haystack)) 
        {
            return true;
        }
    }
    else
    {
        if(preg_match("/{$needle}/{$i}", $haystack)) 
        {
            return true;
        }
    }
    return false;
    // Put quotes around true and false above to return them as strings instead of as bools/ints.
}

One more thing to take in mind, is that \b will not work in different languages other than english.

The explanation for this and the solution is taken from here:

\b represents the beginning or end of a word (Word Boundary). This regex would match apple in an apple pie, but wouldn’t match apple in pineapple, applecarts or bakeapples.

How about “café”? How can we extract the word “café” in regex? Actually, \bcafé\b wouldn’t work. Why? Because “café” contains non-ASCII character: é. \b can’t be simply used with Unicode such as ??????, ??, ????? and .

When you want to extract Unicode characters, you should directly define characters which represent word boundaries.

The answer: (?<=[\s,.:;"']|^)UNICODE_WORD(?=[\s,.:;"']|$)

So in order to use the answer in PHP, you can use this function:

function contains($str, array $arr) {
    // Works in Hebrew and any other unicode characters
    // Thanks https://medium.com/@shiba1014/regex-word-boundaries-with-unicode-207794f6e7ed
    // Thanks https://www.phpliveregex.com/
    if (preg_match('/(?<=[\s,.:;"\']|^)' . $word . '(?=[\s,.:;"\']|$)/', $str)) return true;
}

And if you want to search for array of words, you can use this:

function arrayContainsWord($str, array $arr)
{
    foreach ($arr as $word) {
        // Works in Hebrew and any other unicode characters
        // Thanks https://medium.com/@shiba1014/regex-word-boundaries-with-unicode-207794f6e7ed
        // Thanks https://www.phpliveregex.com/
        if (preg_match('/(?<=[\s,.:;"\']|^)' . $word . '(?=[\s,.:;"\']|$)/', $str)) return true;
    }
    return false;
}

As of PHP 8.0.0 you can now use str_contains

<?php
    if (str_contains('abc', '')) {
        echo "Checking the existence of the empty string will always 
        return true";
    }

Useful commands to work in daily life:

git checkout -b "branchname" ->  creates new branch
git branch                   ->  lists all branches
git checkout "branchname"    ->  switches to your branch
git push origin "branchname" ->  Pushes to your branch
git add */filename           -> Stages *(All files) or by given file name
git commit -m "commit message" -> Commits staged files
git push                     -> Pushes to your current branch

If you want to merge to dev from feature branch, First check out dev branch with command "git branch dev/develop" Then enter merge commadn "git merge featurebranchname"

You can do like this :

count = 0
cnxn = pyodbc.connect("Driver={SQL Server Native Client 11.0};"
                      "Server=serverName;"
                      "Trusted_Connection=yes;")
cursor = cnxn.cursor()
cursor.execute(SQL query)
for row in cursor:
    count = 1
    if true condition:
        print("True")
    else:
        print("False")
if count == 0:
    print("No Result")

Thanks :)

These are Unicode property shortcuts (\p{L} for Unicode letters, \p{N} for Unicode digits). They are supported by .NET, Perl, Java, PCRE, XML, XPath, JGSoft, Ruby (1.9 and higher) and PHP (since 5.1.0)

At any rate, that's a very strange regex. You should not be using alternation when a character class would suffice:

[\p{L}\p{N}_.-]*

Just to kick a long-dead horse, because I've had to implement an optional argument in the middle of two or more required arguments. Use the arguments array and use the last one as the required non-optional argument.

my_function() {
  var options = arguments[argument.length - 1];
  var content = arguments.length > 1 ? arguments[0] : null;
}

The query component is indicated by the first ? in a URI. "Query string" might be a synonym (this term is not used in the URI standard).

Some examples for HTTP URIs with query components:

http://example.com/foo?bar
http://example.com/foo/foo/foo?bar/bar/bar
http://example.com/?bar
http://example.com/?@bar._=???/1:
http://example.com/?bar1=a&bar2=b

(list of allowed characters in the query component)

The "format" of the query component is up to the URI authors. A common convention (but nothing more than a convention, as far as the URI standard is concerned¹) is to use the query component for key-value pairs, aka. parameters, like in the last example above: bar1=a&bar2=b.

Such parameters could also appear in the other URI components, i.e., the path² and the fragment. As far as the URI standard is concerned, it’s up to you which component and which format to use.

Example URI with parameters in the path, the query, and the fragment:

http://example.com/foo;key1=value1?key2=value2#key3=value3

¹ The URI standard says about the query component:

[…] query components are often used to carry identifying information in the form of "key=value" pairs […]

² The URI standard says about the path component:

[…] the semicolon (";") and equals ("=") reserved characters are often used to delimit parameters and parameter values applicable to that segment. The comma (",") reserved character is often used for similar purposes.

I use http://wiltgen.net/objecty/, it helps to embed media content and avoid the IE "click to activate" problem.

This is already an old question, but all answers didn't solve my problem, so let's add the one I finally found. It smells like a hack (and it is one), but works always in my situation. Hope in your situation too.

//Dummy one, which will result in a working next statement.
navigator.geolocation.getCurrentPosition(function () {}, function () {}, {});
//The working next statement.
navigator.geolocation.getCurrentPosition(function (position) {
    //Your code here
}, function (e) {
    //Your error handling here
}, {
    enableHighAccuracy: true
});

The best solution is to add to your apache .htaccess file the following line after RewriteEngine On

RewriteRule ^sitemap\.xml$ sitemap.php [L]

and then simply having a file sitemap.php in your root folder that would be normally accessible via http://www.yoursite.com/sitemap.xml, the default URL where all search engines will firstly search.

The file sitemap.php shall start with

<?php
//Saturday, 11 January 2020 @kevin

header('Content-type: text/xml');
echo '<?xml version="1.0" encoding="UTF-8"?>';
?>
<urlset
      xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9
            http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd">

<url>
  <loc>https://www.yoursite.com/</loc>
  <lastmod>2020-01-08T13:06:14+00:00</lastmod>
  <priority>1.00</priority>
</url>


</urlset>

it works :)

Try to change all the persmissions at the same time:

chmod -R +xr

If you want the 3 buttons to have a fixed width and be evenly distributed across the width of the layout... why not use constraintLayout?

<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

        <Button
            android:id="@+id/btnOne"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:width="120dip"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toStartOf="@id/btnTwo">
            
        </Button>

        <Button
            android:id="@+id/btnTwo"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:width="120dip"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toStartOf="@id/btnThree"
            app:layout_constraintStart_toEndOf="@id/btnOne"></Button>


        <Button
            android:id="@+id/btnThree"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:width="120dip"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintStart_toEndOf="@id/btnTwo"
            app:layout_constraintEnd_toEndOf="parent">
            
        </Button>

</androidx.constraintlayout.widget.ConstraintLayout>

I can't see why you would care. Other than the "don't use ports below 1024" privilege rule, you should be able to use any port because your clients should be configurable to talk to any IP address and port!

If they're not, then they haven't been done very well. Go back and do them properly :-)

In other words, run the server at IP address X and port Y then configure clients with that information. Then, if you find you must run a different server on X that conflicts with your Y, just re-configure your server and clients to use a new port. This is true whether your clients are code, or people typing URLs into a browser.

I, like you, wouldn't try to get numbers assigned by IANA since that's supposed to be for services so common that many, many environments will use them (think SSH or FTP or TELNET).

Your network is your network and, if you want your servers on port 1234 (or even the TELNET or FTP ports for that matter), that's your business. Case in point, in our mainframe development area, port 23 is used for the 3270 terminal server which is a vastly different beast to telnet. If you want to telnet to the UNIX side of the mainframe, you use port 1023. That's sometimes annoying if you use telnet clients without specifying port 1023 since it hooks you up to a server that knows nothing of the telnet protocol - we have to break out of the telnet client and do it properly:

telnet big_honking_mainframe_box.com 1023

If you really can't make the client side configurable, pick one in the second range, like 48042, and just use it, declaring that any other software on those boxes (including any added in the future) has to keep out of your way.

Can't you just count the rows using select count(*) from table (or an indexed column instead of * if speed is important)?

If not then maybe this article can point you in the right direction.

This should do the trick:

TextView.setText("test");

You can add this declaration to silence the warnings.

declare var obj: any;

Go to the folder in which you have Node and NPM (such as C:\Program Files (x86)\nodejs\) and type the following:

> set path=%PATH%;%CD%
> setx path "%PATH%"

From http://www.hacksparrow.com/install-node-js-and-npm-on-windows.html

In java 8

String lastItem = Stream.of(str.split("-")).reduce((first,last)->last).get();

MongoDB needs data directory to store data. Default path is /data/db

When you start MongoDB engine, it searches this directory which is missing in your case. Solution is create this directory and assign rwx permission to user.

If you want to change the path of your data directory then you should specify it while starting mongod server like,

mongod --dbpath /data/<path> --port <port no> 

This should help you start your mongod server with custom path and port.

You can't use {{}} when using angular directives for binding with ng-model but for binding non-angular attributes you would have to use {{}}..

Eg:

ng-show="my-model"
title = "{{my-model}}"

I was looking for the onClick option to set the title and body of the modal based on the item in a list. T145's answer helped a lot, so I wanted to share how I used it.

Make sure the tag containing the JavaScript function is of type text/javascript to avoid conflicts:

<script type="text/javascript"> function showMyModalSetTitle(myTitle, myBodyHtml) {

   /*
    * '#myModayTitle' and '#myModalBody' refer to the 'id' of the HTML tags in
    * the modal HTML code that hold the title and body respectively. These id's
    * can be named anything, just make sure they are added as necessary.
    *
    */

   $('#myModalTitle').html(myTitle);
   $('#myModalBody').html(myBodyHtml);

   $('#myModal').modal('show');
}</script>

This function can now be called in the onClick method from inside an element such as a button:

<button type="button" onClick="javascript:showMyModalSetTitle('Some Title', 'Some body txt')"> Click Me! </button>

Neither of the above answers worked for me, however this did

UPDATE:

As @doppleganger pointed out below, load is gone as of jQuery 3.0, so here's an updated version that uses on. Please note this will actually work on jQuery 1.7+, so you can implement it this way even if you're not on jQuery 3.0 yet.

$('iframe').on('load', function() {
    // do stuff 
});

TRY TO INSTALL 32BIT JDK

if you have jdk installed and had set up the System Varibles such as JAVA_HOME or JDK_HOME and tried click back and then next ,you might have installed the 64bit JDK,just download the 32bit jdk and install it.

If you are talking about show line number command in vi/vim

you could use

set nu

in commandline mode to turn on and

set nonu

will turn off the line number display or

set nu!

to toggle off display of line numbers

Straight from the docs

join([timeout]) Wait until the thread terminates. This blocks the calling thread until the thread whose join() method is called terminates – either normally or through an unhandled exception – or until the optional timeout occurs.

This means that the main thread which spawns t and d, waits for t to finish until it finishes.

Depending on the logic your program employs, you may want to wait until a thread finishes before your main thread continues.

Also from the docs:

A thread can be flagged as a “daemon thread”. The significance of this flag is that the entire Python program exits when only daemon threads are left.

A simple example, say we have this:

def non_daemon():
    time.sleep(5)
    print 'Test non-daemon'

t = threading.Thread(name='non-daemon', target=non_daemon)

t.start()

Which finishes with:

print 'Test one'
t.join()
print 'Test two'

This will output:

Test one
Test non-daemon
Test two

Here the master thread explicitly waits for the t thread to finish until it calls print the second time.

Alternatively if we had this:

print 'Test one'
print 'Test two'
t.join()

We'll get this output:

Test one
Test two
Test non-daemon

Here we do our job in the main thread and then we wait for the t thread to finish. In this case we might even remove the explicit joining t.join() and the program will implicitly wait for t to finish.

First of all, checked can have a value of checked, or an empty string.

$("input:checkbox").uniform();

$('#check1').live('click', function() {
    $('#check2').attr('checked', 'checked').uniform();
});

According to http://developer.android.com/tools/debugging/debugging-log.html:

Here's an example of a filter expression that suppresses all log messages except those with the tag "ActivityManager", at priority "Info" or above, and all log messages with tag "MyApp", with priority "Debug" or above:

adb logcat ActivityManager:I MyApp:D *:S

The final element in the above expression, *:S, sets the priority level for all tags to "silent", thus ensuring only log messages with "View" and "MyApp" are displayed.

• V — Verbose (lowest priority)
• D — Debug
• I — Info
• W — Warning
• E — Error
• F — Fatal
• S — Silent (highest priority, on which nothing is ever printed)

I work with a computed property like:

    items:{
        get(){
            return this.resources;
        },
        set(v){
            this.$emit("update:resources", v)
        }
    },

Resources is in this case a property:

props: [ 'resources' ]

The accepted answer by Muhammad Usama is correct.

Configuration Parameter Name

That answer shows how to set a Postgres-specific configuration parameter with the following:

SET timezone TO 'UTC';

…where timezone is not a SQL command, it is the name of the configuration parameter.

See the doc for this.

Standard SQL Command

Alternatively, you can use the SQL command defined by the SQL spec: SET TIME ZONE. In this syntax a pair of words TIME ZONE replace "timezone" (actual SQL command versus parameter name), and there is no "TO".

SET TIME ZONE 'UTC';

Both this command and the one above have the same effect, to set the value for the current session only. To make the change permanent, see this sibling answer.

See the doc for this.

Time Zone Name

You can specify a proper time zone name. Most of these are continent/region.

SET TIME ZONE 'Africa/Casablanca';

…or…

SET TIME ZONE 'America/Montreal';

Avoid the 3 or 4 letter abbreviations such as EST or IST as they are neither standardized nor unique. See Wikipedia for list of time zone names.

Get current zone

To see the current time zone for a session, try either of the following statements. Technically we are calling the SHOW command to display a run-time parameter.

SHOW timezone ;

…or…

SHOW time zone ;

US/Pacific

I just started using Octave. And I have seen people use Matlab. And one major difference as mentioned above is that Octave has a command line interface and Matlab has a GUI. According to me having a GUI is very good for debugging. In Ocatve you have to execute commands to see what is the length of a matrix is etc, but in Matlab it nicely shows everything using a good interface. But Octave is free and good for the basic tasks that I do. If you are sure that you are going to do just basic stuff or you are unsure what you need right now, then go for Octave. You can pay for the Matlab when you really feel the need.

FWIW, htpasswd -n username will output the result directly to stdout, and avoid touching files altogether.

select status, timeplaced 
from orders 
where TIMEPLACED>'2017-06-12 00:00:00' 

% mysql --user=root mysql
CREATE USER 'monty'@'localhost' IDENTIFIED BY 'some_pass';
GRANT ALL PRIVILEGES ON *.* TO 'monty'@'localhost' WITH GRANT OPTION;
CREATE USER 'monty'@'%' IDENTIFIED BY 'some_pass';
GRANT ALL PRIVILEGES ON *.* TO 'monty'@'%' WITH GRANT OPTION;
CREATE USER 'admin'@'localhost';
GRANT RELOAD,PROCESS ON *.* TO 'admin'@'localhost';
CREATE USER 'dummy'@'localhost';
FLUSH PRIVILEGES;

Elements() will only check direct children - which in the first case is the root element, in the second case children of the root element, hence you get a match in the second case. If you just want any matching descendant use Descendants() instead:

var query = from c in xmlFile.Descendants("Band") select c;

Also I would suggest you re-structure your Xml: The band name should be an attribute or element value, not the element name itself - this makes querying (and schema validation for that matter) much harder, i.e. something like this:

<Band>
  <BandProperties Name ="Doors" ID="222" started="1968" />
  <Description>regular Band<![CDATA[lalala]]></Description>
  <Last>1</Last>
  <Salary>2</Salary>
</Band>

moment has updated the js lib as of 06/2018.

var newYork    = moment.tz("2014-06-01 12:00", "America/New_York");
var losAngeles = newYork.clone().tz("America/Los_Angeles");
var london     = newYork.clone().tz("Europe/London");

newYork.format();    // 2014-06-01T12:00:00-04:00
losAngeles.format(); // 2014-06-01T09:00:00-07:00
london.format();     // 2014-06-01T17:00:00+01:00

if you have freedom to use Angular5+, then better use datePipe feature there than the timezone function here. I have to use moment.js because my project limits to Angular2 only.

There is an api in Express.

res.sendFile

app.get('/report/:chart_id/:user_id', function (req, res) {
    // res.sendFile(filepath);
});

http://expressjs.com/en/api.html#res.sendFile

If you need in different Layer :

Create a Static Class and expose all config properties on that layer as below :

using Microsoft.Extensions.Configuration;_x000D_
using System.IO;_x000D_
_x000D_
namespace Core.DAL_x000D_
{_x000D_
    public static class ConfigSettings_x000D_
    {_x000D_
        public static string conStr1 { get ; }_x000D_
        static ConfigSettings()_x000D_
        {_x000D_
            var configurationBuilder = new ConfigurationBuilder();_x000D_
            string path = Path.Combine(Directory.GetCurrentDirectory(), "appsettings.json");_x000D_
            configurationBuilder.AddJsonFile(path, false);_x000D_
            conStr1 = configurationBuilder.Build().GetSection("ConnectionStrings:ConStr1").Value;_x000D_
        }_x000D_
    }_x000D_
}

Never try to set the compiler in the CMakeLists.txt file.

See the CMake FAQ about how to use a different compiler:

https://gitlab.kitware.com/cmake/community/wikis/FAQ#how-do-i-use-a-different-compiler

(Note that you are attempting method #3 and the FAQ says "(avoid)"...)

We recommend avoiding the "in the CMakeLists" technique because there are problems with it when a different compiler was used for a first configure, and then the CMakeLists file changes to try setting a different compiler... And because the intent of a CMakeLists file should be to work with multiple compilers, according to the preference of the developer running CMake.

The best method is to set the environment variables CC and CXX before calling CMake for the very first time in a build tree.

After CMake detects what compilers to use, it saves them in the CMakeCache.txt file so that it can still generate proper build systems even if those variables disappear from the environment...

If you ever need to change compilers, you need to start with a fresh build tree.

for file in *.jpg ; do mv $file ${file//IMG/myVacation} ; done

Again assuming that all your image files have the string "IMG" and you want to replace "IMG" with "myVacation".

With bash you can directly convert the string with parameter expansion.

Example: if the file is IMG_327.jpg, the mv command will be executed as if you do mv IMG_327.jpg myVacation_327.jpg. And this will be done for each file found in the directory matching *.jpg.

IMG_001.jpg -> myVacation_001.jpg
IMG_002.jpg -> myVacation_002.jpg
IMG_1023.jpg -> myVacation_1023.jpg
etcetera...

UPDATED since this was last downvoted....

I only saw the portion

var dots = 5
function increase(){
    dots = dots+5;
}

before, but it was later shown to me that the txt box feeds the variable dots. Because of this, you will need to be sure to "cleanse" the input, to be sure it only has integers, and not malicious code.

One easy way to do this is to parse the textbox with an onkeyup() event to ensure it has numeric characters:

<input size="40" id="txt" value="Write a character here!" onkeyup="GetChar (event);"/>

where the event would give an error and clear the last character if the value is not a number:

<script type="text/javascript">
    function GetChar (event){
        var keyCode = ('which' in event) ? event.which : event.keyCode;
        var yourChar = String.fromCharCode();
        if (yourChar != "0" &&
            yourChar != "1" &&
            yourChar != "2" &&
            yourChar != "3" && 
            yourChar != "4" &&
            yourChar != "5" &&
            yourChar != "6" && 
            yourChar != "7" &&
            yourChar != "8" && 
            yourChar != "9")
        {
            alert ('The character was not a number');
            var source = event.target || event.srcElement;
            source.value = source.value.substring(0,source.value-2);
        }
    }
</script>

Obviously you could do that with regex, too, but I took the lazy way out.

Since then you would know that only numbers could be in the box, you should be able to just use eval():

dots = eval(dots) + 5;

the solution what I found to work in my case

$('#multiselect1').multiselect({
    selectAllValue: 'multiselect-all',
    enableCaseInsensitiveFiltering: true,
    enableFiltering: true,
    maxHeight: '300',
    buttonWidth: '235',
    onChange: function(element, checked) {
        var brands = $('#multiselect1 option:selected');
        var selected = [];
        $(brands).each(function(index, brand){
            selected.push([$(this).val()]);
        });

        console.log(selected);
    }
}); 

If you have built an image with Docker, and you're getting these strange messages:

warning MSB3245: Could not resolve this reference. Could not locate the assembly "Microsoft.Extensions.Configuration.Abstractions". Check to make sure the assembly exists on disk. If this reference is required by your code, you may get compilation errors. [/src/Utilities/Utilities.csproj]

Open the affected projectUtilities/Utilities.csproj, (You shall look for your project). You may need to choose Unload Project from the menu first. Right click on the .csproj file and edit it.

Now, delete all the <HintPath> tags

Save, and try again.

Change the file name if your file name is like pandas.py or pd.py, it will shadow the real name otherwise.

When the project was originally created, the click-once signing certificate was added on the signing tab of the project's properties. This signs the click-once manifest when you build it. Between then and now, that certificate is no longer available. Either this wasn't the machine you originally built it on or it got cleaned up somehow. You need to re-add that certificate to your machine or chose another certificate.

Check if string is positive digit (integer) and alphabet

You may use str.isdigit() and str.isalpha() to check whether given string is positive integer and alphabet respectively.

Sample Results:

# For alphabet
>>> 'A'.isdigit()
False
>>> 'A'.isalpha()
True

# For digit
>>> '1'.isdigit()
True
>>> '1'.isalpha()
False

Check for strings as positive/negative - integer/float

str.isdigit() returns False if the string is a negative number or a float number. For example:

# returns `False` for float
>>> '123.3'.isdigit()
False
# returns `False` for negative number
>>> '-123'.isdigit()
False

If you want to also check for the negative integers and float, then you may write a custom function to check for it as:

def is_number(n):
    try:
        float(n)   # Type-casting the string to `float`.
                   # If string is not a valid `float`, 
                   # it'll raise `ValueError` exception
    except ValueError:
        return False
    return True

Sample Run:

>>> is_number('123')    # positive integer number
True

>>> is_number('123.4')  # positive float number
True
 
>>> is_number('-123')   # negative integer number
True

>>> is_number('-123.4') # negative `float` number
True

>>> is_number('abc')    # `False` for "some random" string
False

Discard "NaN" (not a number) strings while checking for number

The above functions will return True for the "NAN" (Not a number) string because for Python it is valid float representing it is not a number. For example:

>>> is_number('NaN')
True

In order to check whether the number is "NaN", you may use math.isnan() as:

>>> import math
>>> nan_num = float('nan')

>>> math.isnan(nan_num)
True

Or if you don't want to import additional library to check this, then you may simply check it via comparing it with itself using ==. Python returns False when nan float is compared with itself. For example:

# `nan_num` variable is taken from above example
>>> nan_num == nan_num
False

Hence, above function is_number can be updated to return False for "NaN" as:

def is_number(n):
    is_number = True
    try:
        num = float(n)
        # check for "nan" floats
        is_number = num == num   # or use `math.isnan(num)`
    except ValueError:
        is_number = False
    return is_number

Sample Run:

>>> is_number('Nan')   # not a number "Nan" string
False

>>> is_number('nan')   # not a number string "nan" with all lower cased
False

>>> is_number('123')   # positive integer
True

>>> is_number('-123')  # negative integer
True

>>> is_number('-1.12') # negative `float`
True

>>> is_number('abc')   # "some random" string
False

Allow Complex Number like "1+2j" to be treated as valid number

The above function will still return you False for the complex numbers. If you want your is_number function to treat complex numbers as valid number, then you need to type cast your passed string to complex() instead of float(). Then your is_number function will look like:

def is_number(n):
    is_number = True
    try:
        #      v type-casting the number here as `complex`, instead of `float`
        num = complex(n)
        is_number = num == num
    except ValueError:
        is_number = False
    return is_number

Sample Run:

>>> is_number('1+2j')    # Valid 
True                     #      : complex number 

>>> is_number('1+ 2j')   # Invalid 
False                    #      : string with space in complex number represetantion
                         #        is treated as invalid complex number

>>> is_number('123')     # Valid
True                     #      : positive integer

>>> is_number('-123')    # Valid 
True                     #      : negative integer

>>> is_number('abc')     # Invalid 
False                    #      : some random string, not a valid number

>>> is_number('nan')     # Invalid
False                    #      : not a number "nan" string

PS: Each operation for each check depending on the type of number comes with additional overhead. Choose the version of is_number function which fits your requirement.

You need to set the text to something other than an empty string. In addition, the .html() function should do it while preserving the HTML structure of the div.

$('#one').html($('#one').html().replace('text','replace'));

If you are looking to be able to restore a table after someone has mistakenly deleted rows from it you could maybe have a look at database snapshots. You could restore the table quite easily (or a subset of the rows) from the snapshot. See http://msdn.microsoft.com/en-us/library/ms175158.aspx

=counta(range) 

• counta: "Returns a count of the number of values in a dataset"

  Note: CountA considers "" to be a value. Only cells that are blank (press delete in a cell to blank it) are not counted.

  Google support: https://support.google.com/docs/answer/3093991

• countblank: "Returns the number of empty cells in a given range"

  Note: CountBlank considers both blank cells (press delete to blank a cell) and cells that have a formula that returns "" to be empty cells.

  Google Support: https://support.google.com/docs/answer/3093403

If you have a range that includes formulae that result in "", then you can modify your formula from

=counta(range)

to:

=Counta(range) - Countblank(range)

EDIT: the function is countblank, not countblanks, the latter will give an error.

Here is a useful solution that works for various operating systems, including Linux, Windows, etc.:

import os, psutil
process = psutil.Process(os.getpid())
print(process.memory_info().rss)  # in bytes 

With Python 2.7 and psutil 5.6.3, the last line should be

print(process.memory_info()[0])

instead (there was a change in the API later).

Note:

• do pip install psutil if it is not installed yet

• handy one-liner if you quickly want to know how many MB your process takes:

  import os, psutil; print(psutil.Process(os.getpid()).memory_info().rss / 1024 ** 2)
  

There is a very good answer to the same question.
Adding following lines to "~/.gitconfig":

[alias]
lg1 = log --graph --abbrev-commit --decorate --date=relative --format=format:'%C(bold blue)%h%C(reset) - %C(bold green)(%ar)%C(reset) %C(white)%s%C(reset) %C(dim white)- %an%C(reset)%C(bold yellow)%d%C(reset)' --all
lg2 = log --graph --abbrev-commit --decorate --format=format:'%C(bold blue)%h%C(reset) - %C(bold cyan)%aD%C(reset) %C(bold green)(%ar)%C(reset)%C(bold yellow)%d%C(reset)%n''          %C(white)%s%C(reset) %C(dim white)- %an%C(reset)' --all
lg = !"git lg1"

A library-free implementation in TypeScript that works for any matrix shape that won't truncate your arrays:

const rotate2dArray = <T>(array2d: T[][]) => {
    const rotated2d: T[][] = []

    return array2d.reduce((acc, array1d, index2d) => {
        array1d.forEach((value, index1d) => {
            if (!acc[index1d]) acc[index1d] = []

            acc[index1d][index2d] = value
        })

        return acc
    }, rotated2d)
}

In AppDelegate.swift you can add the following code:

let sb = UIStoryboard(name: "Main", bundle: nil)
let vc = sb.instantiateViewController(withIdentifier: "YourViewController_StorboardID")
self.window?.rootViewController = vc
self.window?.makeKeyAndVisible()

Of course, you need to implement your logic, based on which criteria you'll choose an appropriate view controller.

Also, don't forget to add an identity (select storyboard -> Controller Scene -> Show the identity inspector -> assign StorboardID).

Its a parameter the you need to define. to prevent SQL Injection you should pass all your variables in as parameters.

Your class doesn't have a __init__(), so by the time it's instantiated, the attribute atoms is not present. You'd have to do C.setdata('something') so C.atoms becomes available.

>>> C = Residues()
>>> C.atoms.append('thing')

Traceback (most recent call last):
  File "<pyshell#84>", line 1, in <module>
    B.atoms.append('thing')
AttributeError: Residues instance has no attribute 'atoms'

>>> C.setdata('something')
>>> C.atoms.append('thing')   # now it works
>>> 

Unlike in languages like Java, where you know at compile time what attributes/member variables an object will have, in Python you can dynamically add attributes at runtime. This also implies instances of the same class can have different attributes.

To ensure you'll always have (unless you mess with it down the line, then it's your own fault) an atoms list you could add a constructor:

def __init__(self):
    self.atoms = []

put r before your string, it converts normal string to raw string

(1) Set the tabindex attribute:

<div id="mydiv" tabindex="0" />

(2) Bind to keydown:

 $('#mydiv').on('keydown', function(event) {
    //console.log(event.keyCode);
    switch(event.keyCode){
       //....your actions for the keys .....
    }
 });

To set the focus on start:

$(function() {
   $('#mydiv').focus();
});

To remove - if you don't like it - the div focus border, set outline: none in the CSS.

See the table of keycodes for more keyCode possibilities.

All of the code assuming you use jQuery.

c functions below only ... c++ you have to do char array then use a string copy then user the string tokenizor functions... c++ made it a-lot harder to do anythng

#include <iostream>
#include <fstream>
#include <cstring>
#define TRUE 1
#define FALSE 0
typedef int Bool;
using namespace std;
Bool PalTrueFalse(char str[]);
int main(void)
{
char string[1000], ch;
int i = 0;
cout<<"Enter a message: ";

while((ch = getchar()) != '\n') //grab users input string untill 
{                               //Enter is pressed
    if (!isspace(ch) && !ispunct(ch)) //Cstring functions checking for
    {                                //spaces and punctuations of all kinds
        string[i] = tolower(ch); 
        i++;
    }
}
string[i] = '\0';  //hitting null deliminator once users input
cout<<"Your string: "<<string<<endl; 
if(PalTrueFalse(string)) //the string[i] user input is passed after
                        //being cleaned into the null function.
    cout<<"is a "<<"Palindrome\n"<<endl;
else
   cout<<"Not a palindrome\n"<<endl;
return 0;
}

Bool PalTrueFalse(char str[])
{
int left = 0;
int right = strlen(str)-1;
while (left<right)
{
   if(str[left] != str[right]) //comparing most outer values of string
       return FALSE;          //to inner values.
   left++;
   right--;
}
return TRUE;
}

I could do that following the steps:

1. Create a folder __mocks__/ (as pointed by @Januartha comment)
2. Implement an axios.js mock file
3. Use my implemented module on test

The mock will happen automatically

Example of the mock module:

module.exports = {
    get: jest.fn((url) => {
        if (url === '/something') {
            return Promise.resolve({
                data: 'data'
            });
        }
    }),
    post: jest.fn((url) => {
        if (url === '/something') {
            return Promise.resolve({
                data: 'data'
            });
        }
        if (url === '/something2') {
            return Promise.resolve({
                data: 'data2'
            });
        }
    }),
    create: jest.fn(function () {
        return this;
    })
};

You can use standard String.format function for generate N spaces. For example:

String.format("%5c", ' ');

Makes a string with 5 spaces.

or

int count = 15;
String fifteenSpacebars = String.format("%" + count + "c", ' ');

Makes a string of 15 spacebars.

If you want another symbol to repeat, you must replace spaces with your desired symbol:

int count = 7;
char mySymbol = '#';
System.out.println(String.format("%" + count + "c", ' ').replaceAll("\\ ", "\\" + mySymbol));

Output:

#######

You might be looking for this Microsoft Ajax Content Delivery Network So you could just add

<script src="http://ajax.microsoft.com/ajax/jquery/jquery-1.4.2.min.js" type="text/javascript"></script>

To your aspx page.

From 6.11. Boolean operations:

In the context of Boolean operations, and also when expressions are used by control flow statements, the following values are interpreted as false: False, None, numeric zero of all types, and empty strings and containers (including strings, tuples, lists, dictionaries, sets and frozensets). All other values are interpreted as true.

The key phrasing here that I think you are misunderstanding is "interpreted as false" or "interpreted as true". This does not mean that any of those values are identical to True or False, or even equal to True or False.

The expression '/bla/bla/bla' will be treated as true where a Boolean expression is expected (like in an if statement), but the expressions '/bla/bla/bla' is True and '/bla/bla/bla' == True will evaluate to False for the reasons in Ignacio's answer.

you mean something like this ?

from numpy  import array
a = array( your_list )

You should try this syntax - assuming you want to have @OrderID as a parameter for your stored procedure:

CREATE PROCEDURE dbo.YourStoredProcNameHere
   @OrderID INT
AS
BEGIN
 DECLARE @OrderItemID AS INT
 DECLARE @AppointmentID AS INT
 DECLARE @PurchaseOrderID AS INT
 DECLARE @PurchaseOrderItemID AS INT
 DECLARE @SalesOrderID AS INT
 DECLARE @SalesOrderItemID AS INT

 SELECT @OrderItemID = OrderItemID 
 FROM [OrderItem] 
 WHERE OrderID = @OrderID

 SELECT @AppointmentID = AppoinmentID 
 FROM [Appointment] 
 WHERE OrderID = @OrderID

 SELECT @PurchaseOrderID = PurchaseOrderID 
 FROM [PurchaseOrder] 
 WHERE OrderID = @OrderID

END

OF course, that only works if you're returning exactly one value (not multiple values!)

Try instead of db.parse(xml):

Document doc = db.parse(new InputSource(new StringReader(**xml**)));

For this particular question, the standard suggestion of java.text.SimpleDateFormat works, but has the unfortunate side effect that SimpleDateFormat is not thread-safe and can be the source of particularly nasty problems since it'll corrupt your output in multi-threaded scenarios, and you won't get any exceptions!

I would strongly recommend looking at Joda for anything like this. Why ? It's a much richer and more intuitive time/date library for Java than the current library (and the basis of the up-and-coming new standard Java date/time library, so you'll be learning a soon-to-be-standard API).

Does the problem still occur when you save it as a .txt file and them open that in excel with comma as a delimiter?

The problem might not be the encoding at all, it might just be that the file isn't a perfect CSV according to excel standards.

Ruby uses the case expression instead.

case x
when 1..5
  "It's between 1 and 5"
when 6
  "It's 6"
when "foo", "bar"
  "It's either foo or bar"
when String
  "You passed a string"
else
  "You gave me #{x} -- I have no idea what to do with that."
end

Ruby compares the object in the when clause with the object in the case clause using the === operator. For example, 1..5 === x, and not x === 1..5.

This allows for sophisticated when clauses as seen above. Ranges, classes and all sorts of things can be tested for rather than just equality.

Unlike switch statements in many other languages, Ruby’s case does not have fall-through, so there is no need to end each when with a break. You can also specify multiple matches in a single when clause like when "foo", "bar".

If you want to change tabs to spaces in a lot of files, but don't want to open them individually, I have found that it works equally as well to just use the Find and Replace option from the left-most tools bar.

In the first box (Find), copy and paste a tab from the source code.

In the second box (Replace), enter the number of spaces that you wish to use (i.e. 2 or 4).

If you press the ... button, you can specify directories to include or ignore (i.e. src/Data/Json).

Finally, inspect the result preview and press Replace All. All files in the workspace may be affected.

I have the same problem and I followed this Post, it solved my problem.

Follow the following 2 steps:

1. Make sure the optimization level is -O0
2. Add -ggdb flag when compiling your program

Good luck!

Since the accepted BufferedInputStream#read isn't guaranteed to read everything, rather than keeping track of the buffer sizes myself, I used this approach:

    byte bytes[] = new byte[(int) file.length()];
    BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));
    DataInputStream dis = new DataInputStream(bis);
    dis.readFully(bytes);

Blocks until a full read is complete, and doesn't require extra imports.

request.getRequestDispatcher(“url”) means the dispatch is relative to the current HTTP request.Means this is for chaining two servlets with in the same web application Example

RequestDispatcher reqDispObj = request.getRequestDispatcher("/home.jsp");

getServletContext().getRequestDispatcher(“url”) means the dispatch is relative to the root of the ServletContext.Means this is for chaining two web applications with in the same server/two different servers

Example

RequestDispatcher reqDispObj = getServletContext().getRequestDispatcher("/ContextRoot/home.jsp");

Make it like this:

$scope.users.data.length;

You can try this.

func convertToJSONString(value: AnyObject) -> String? {
        if JSONSerialization.isValidJSONObject(value) {
            do{
                let data = try JSONSerialization.data(withJSONObject: value, options: [])
                if let string = NSString(data: data, encoding: String.Encoding.utf8.rawValue) {
                    return string as String
                }
            }catch{
            }
        }
        return nil
    }

If you are looking to have multiple subscripts in one text then use the star(*) to separate the sections:

plot(1:10, xlab=expression('hi'[5]*'there'[6]^8*'you'[2]))

//form/descendant::input[@type='submit']

The benefits of super() in single-inheritance are minimal -- mostly, you don't have to hard-code the name of the base class into every method that uses its parent methods.

However, it's almost impossible to use multiple-inheritance without super(). This includes common idioms like mixins, interfaces, abstract classes, etc. This extends to code that later extends yours. If somebody later wanted to write a class that extended Child and a mixin, their code would not work properly.

"Resolve" vs "Recursive" merge strategy

Recursive is the current default two-head strategy, but after some searching I finally found some info about the "resolve" merge strategy.

Taken from O'Reilly book Version Control with Git (Amazon) (paraphrased):

Originally, "resolve" was the default strategy for Git merges.

In criss-cross merge situations, where there is more than one possible merge basis, the resolve strategy works like this: pick one of the possible merge bases, and hope for the best. This is actually not as bad as it sounds. It often turns out that the users have been working on different parts of the code. In that case, Git detects that it's remerging some changes that are already in place and skips the duplicate changes, avoiding the conflict. Or, if these are slight changes that do cause conflict, at least the conflict should be easy for the developer to handle..

I have successfully merged trees using "resolve" that failed with the default recursive strategy. I was getting fatal: git write-tree failed to write a tree errors, and thanks to this blog post (mirror) I tried "-s resolve", which worked. I'm still not exactly sure why... but I think it was because I had duplicate changes in both trees, and resolve "skipped" them properly.

Adding the below content in the main gradle has solved the problem for me:

allprojects {
    repositories {
        jcenter()
        maven {
            url "https://maven.google.com"
        }
        flatDir {
            dirs 'libs'
        }
    }

A good seed initialisation can be done like this

Random rnd = new Random((int)DateTime.Now.Ticks);

The ticks will be unique and the cast into a int with probably a loose of value will be OK.

A Web Reference allows you to communicate with any service based on any technology that implements the WS-I Basic Profile 1.1, and exposes the relevant metadata as WSDL. Internally, it uses the ASMX communication stack on the client's side.

A Service Reference allows you to communicate with any service based on any technology that implements any of the many protocols supported by WCF (including but not limited to WS-I Basic Profile). Internally, it uses the WCF communication stack on the client side.

Note that both these definitions are quite wide, and both include services not written in .NET.

It is perfectly possible (though not recommended) to add a Web Reference that points to a WCF service, as long as the WCF endpoint uses basicHttpBinding or some compatible custom variant.

It is also possible to add a Service Reference that points to an ASMX service. When writing new code, you should always use a Service Reference simply because it is more flexible and future-proof.

As @Renich suggests (but with an important typo that has not been fixed unfortunately), you can also use extended globbing for pattern matching. So you can use the same patterns you use to match files in command arguments (e.g. ls *.pdf) inside of bash comparisons.

For your particular case you can do the following.

if [[ "${cms}" != @(wordpress|magento|typo3) ]]

The @ means "Matches one of the given patterns". So this is basically saying cms is not equal to 'wordpress' OR 'magento' OR 'typo3'. In normal regular expression syntax @ is similar to just ^(wordpress|magento|typo3)$.

Mitch Frazier has two good articles in the Linux Journal on this Pattern Matching In Bash and Bash Extended Globbing.

For more background on extended globbing see Pattern Matching (Bash Reference Manual).

The error you quote has nothing to do with pg_hba.conf; it's failing to connect, not failing to authorize the connection.

Do what the error message says:

Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections

You haven't shown the command that produces the error. Assuming you're connecting on localhost port 5432 (the defaults for a standard PostgreSQL install), then either:

• PostgreSQL isn't running

• PostgreSQL isn't listening for TCP/IP connections (listen_addresses in postgresql.conf)

• PostgreSQL is only listening on IPv4 (0.0.0.0 or 127.0.0.1) and you're connecting on IPv6 (::1) or vice versa. This seems to be an issue on some older Mac OS X versions that have weird IPv6 socket behaviour, and on some older Windows versions.

• PostgreSQL is listening on a different port to the one you're connecting on

• (unlikely) there's an iptables rule blocking loopback connections

(If you are not connecting on localhost, it may also be a network firewall that's blocking TCP/IP connections, but I'm guessing you're using the defaults since you didn't say).

So ... check those:

• ps -f -u postgres should list postgres processes

• sudo lsof -n -u postgres |grep LISTEN or sudo netstat -ltnp | grep postgres should show the TCP/IP addresses and ports PostgreSQL is listening on

BTW, I think you must be on an old version. On my 9.3 install, the error is rather more detailed:

$ psql -h localhost -p 12345
psql: could not connect to server: Connection refused
        Is the server running on host "localhost" (::1) and accepting
        TCP/IP connections on port 12345?

For all textbox :

$(':text').blur()

SELECT  (
    SELECT COUNT(*)
    FROM   user_table
) AS tot_user,
(
    SELECT COUNT(*)
    FROM   cat_table
) AS tot_cat,
(
    SELECT COUNT(*)
    FROM   course_table
) AS tot_course

This error you are receiving :

SQLSTATE[HY093]: Invalid parameter number: parameter was not defined

is because the number of elements in $values & $matches is not the same or $matches contains more than 1 element.

If $matches contains more than 1 element, than the insert will fail, because there is only 1 column name referenced in the query(hash)

If $values & $matches do not contain the same number of elements then the insert will also fail, due to the query expecting x params but it is receiving y data $matches.

I believe you will also need to ensure the column hash has a unique index on it as well.

Try the code here:

<?php

/*** mysql hostname ***/
$hostname = 'localhost';

/*** mysql username ***/
$username = 'root';

/*** mysql password ***/
$password = '';

try {
    $dbh = new PDO("mysql:host=$hostname;dbname=test", $username, $password);
    /*** echo a message saying we have connected ***/
    echo 'Connected to database';
    }
catch(PDOException $e)
    {
    echo $e->getMessage();
    }


$matches = array('1');
$count = count($matches);
for($i = 0; $i < $count; ++$i) {
    $values[] = '?';
}

// INSERT INTO DATABASE
$sql = "INSERT INTO hashes (hash) VALUES (" . implode(', ', $values) . ") ON DUPLICATE KEY UPDATE hash='hash'";
$stmt = $dbh->prepare($sql);
$data = $stmt->execute($matches);

//Error reporting if something went wrong...
var_dump($dbh->errorInfo());

?>

You will need to adapt it a little.

Table structure I used is here:

CREATE TABLE IF NOT EXISTS `hashes` (
  `hashid` int(11) NOT NULL AUTO_INCREMENT,
  `hash` varchar(250) NOT NULL,
  PRIMARY KEY (`hashid`),
  UNIQUE KEY `hash1` (`hash`)
) ENGINE=InnoDB  DEFAULT CHARSET=latin1 AUTO_INCREMENT=1 ;

Code was run on my XAMPP Server which is using PHP 5.3.8 with MySQL 5.5.16.

I hope this helps.

This solution fixed my problem while replacing br tag to '\n' .

alert(content.replace(/<br\/\>/g,'\n'));

You can use Controls attribute

<video id="sampleMovie" src="HTML5Sample.mov" controls></video>

Put config.assets.debug = false in config/environments/development.rb.

#include <abc.h>

is used to include standard library files. So the compiler will check in the locations where standard library headers are residing.

#include "xyz.h"

will tell the compiler to include user-defined header files. So the compiler will check for these header files in the current folder or -I defined folders.

As everyone has mentioned http.server module is equivalent to python -m SimpleHTTPServer.
But as a warning from https://docs.python.org/3/library/http.server.html#module-http.server

Warning: http.server is not recommended for production. It only implements basic security checks.

Usage

http.server can also be invoked directly using the -m switch of the interpreter.

python -m http.server

The above command will run a server by default on port number 8000. You can also give the port number explicitly while running the server

python -m http.server 9000

The above command will run an HTTP server on port 9000 instead of 8000.

By default, server binds itself to all interfaces. The option -b/--bind specifies a specific address to which it should bind. Both IPv4 and IPv6 addresses are supported. For example, the following command causes the server to bind to localhost only:

python -m http.server 8000 --bind 127.0.0.1

or

python -m http.server 8000 -b 127.0.0.1

Python 3.8 version also supports IPv6 in the bind argument.

Directory Binding

By default, server uses the current directory. The option -d/--directory specifies a directory to which it should serve the files. For example, the following command uses a specific directory:

python -m http.server --directory /tmp/

Directory binding is introduced in python 3.7

From a button in view call .click(call some java script). From there call controller method by window.location.href = 'Controller/Method';

In controller either do the database call and get the datatable or call some method get the data from database table to a datatable and then do following,

using (DataTable dt = new DataTable())
                        {
                            sda.Fill(dt);
                            //Build the CSV file data as a Comma separated string.
                            string csv = string.Empty;
                            foreach (DataColumn column in dt.Columns)
                            {
                                //Add the Header row for CSV file.
                                csv += column.ColumnName + ',';
                            }
                            //Add new line.
                            csv += "\r\n";
                            foreach (DataRow row in dt.Rows)
                            {
                                foreach (DataColumn column in dt.Columns)
                                {
                                    //Add the Data rows.
                                    csv += row[column.ColumnName].ToString().Replace(",", ";") + ',';
                                }
                                //Add new line.
                                csv += "\r\n";
                             }
                             //Download the CSV file.
                             Response.Clear();
                             Response.Buffer = true;
                             Response.AddHeader("content-disposition", "attachment;filename=SqlExport"+DateTime.Now+".csv");
                             Response.Charset = "";
                             //Response.ContentType = "application/text";
                             Response.ContentType = "application/x-msexcel";
                             Response.Output.Write(csv);
                             Response.Flush();
                             Response.End();
                           }

$(document).ready(function() {
    var value = $("#unixtime").val(); //this retrieves the unix timestamp
    var dateString = moment(value, 'MM/DD/YYYY', false).calendar(); 
    alert(dateString);
});

There is a strict mode and a Forgiving mode.

While strict mode works better in most situations, forgiving mode can be very useful when the format of the string being passed to moment may vary.

In a later release, the parser will default to using strict mode. Strict mode requires the input to the moment to exactly match the specified format, including separators. Strict mode is set by passing true as the third parameter to the moment function.

A common scenario where forgiving mode is useful is in situations where a third party API is providing the date, and the date format for that API could change. Suppose that an API starts by sending dates in 'YYYY-MM-DD' format, and then later changes to 'MM/DD/YYYY' format.

In strict mode, the following code results in 'Invalid Date' being displayed:

moment('01/12/2016', 'YYYY-MM-DD', true).format()
"Invalid date"

In forgiving mode using a format string, you get a wrong date:

moment('01/12/2016', 'YYYY-MM-DD').format()
"2001-12-20T00:00:00-06:00"

another way would be

$(document).ready(function() {
    var value = $("#unixtime").val(); //this retrieves the unix timestamp
    var dateString = moment.unix(value).calendar(); 
    alert(dateString);
});

I believe your code is analogous to the following, and you should not have expected the value to have changed for the same reason it wouldn't here:

 public static void Main()
 {
     StringWrapper testVariable = new StringWrapper("before passing");
     Console.WriteLine(testVariable);
     TestI(testVariable);
     Console.WriteLine(testVariable);
 }

 public static void TestI(StringWrapper testParameter)
 {
     testParameter = new StringWrapper("after passing");

     // this will change the object that testParameter is pointing/referring
     // to but it doesn't change testVariable unless you use a reference
     // parameter as indicated in other answers
 }

If you just want to access the last item in the list you can do

if(integerList.Count>0)
{
   var item = integerList[integerList.Count - 1];
}

to get the total number of items in the list you can use the Count property

var itemCount = integerList.Count;

Maybe this is an old question and that´s the reason why these answers didn't work for me ... using Visual Studio 2019, after some investigating, this is the solution I've found:

this.InvokePaint(this, new PaintEventArgs(this.CreateGraphics(), this.DisplayRectangle));

you can take care of the first 3 items with slicing and head:

1. df[df.A>=4].head(1)
2. df[(df.A>=4)&(df.B>=3)].head(1)
3. df[(df.A>=4)&((df.B>=3) * (df.C>=2))].head(1)

The condition in case nothing comes back you can handle with a try or an if...

try:
    output = df[df.A>=6].head(1)
    assert len(output) == 1
except: 
    output = df.sort_values('A',ascending=False).head(1)

There are two answers above up-to-now and they are both long (and tl;dr too short IMHO), so I write summary from my experience starting to use new java.time library (applicable as noted in other answers to Java version 8+). ISO 8601 sets standard way to write dates: YYYY-MM-DD so the format of date-time is only as below (could be 0, 3, 6 or 9 digits for milliseconds) and no formatting string necessary:

import java.time.Instant;
public static void main(String[] args) {
    String date="2010-10-02T12:23:23Z";
    try {
        Instant myDate = Instant.parse(date);
    } catch (ParseException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

I did not need it, but as getting year is in code from the question, then:
it is trickier, cannot be done from Instant directly, can be done via Calendar in way of questions Get integer value of the current year in Java and Converting java.time to Calendar but IMHO as format is fixed substring is more simple to use:

myDate.toString().substring(0,4);

cPickle comes with the standard library… in python 2.x. You are on python 3.x, so if you want cPickle, you can do this:

>>> import _pickle as cPickle

However, in 3.x, it's easier just to use pickle.

No need to install anything. If something requires cPickle in python 3.x, then that's probably a bug.

You can also use pyautogui as:

import pyautogui
pyautogui._autoPause(0.05, False)

If the first argument is not None, then it will pause for first argument's seconds, in this example: 0.05 seconds

If the first argument is None, and the second argument is True, then it will sleep for the global pause setting which is set with:

pyautogui.PAUSE = int

If you are wondering about the reason, see the source code:

def _autoPause(pause, _pause):
    """If `pause` is not `None`, then sleep for `pause` seconds.
    If `_pause` is `True`, then sleep for `PAUSE` seconds (the global pause setting).

    This function is called at the end of all of PyAutoGUI's mouse and keyboard functions. Normally, `_pause`
    is set to `True` to add a short sleep so that the user can engage the failsafe. By default, this sleep
    is as long as `PAUSE` settings. However, this can be override by setting `pause`, in which case the sleep
    is as long as `pause` seconds.
    """
    if pause is not None:
        time.sleep(pause)
    elif _pause:
        assert isinstance(PAUSE, int) or isinstance(PAUSE, float)
        time.sleep(PAUSE)

from datetime import datetime
import time
from calendar import timegm
d = datetime.utcnow()
d = d.strftime("%Y-%m-%dT%H:%M:%S.%fZ")
utc_time = time.strptime(d,"%Y-%m-%dT%H:%M:%S.%fZ")
epoch_time = timegm(utc_time)

As of Ruby 2.4.0, it is easier to start an IRB REPL session in the middle of any Ruby program. Put these lines at the point in the program that you want to debug:

require 'irb'
binding.irb

You can run Ruby code and print out local variables. Type Ctrl+D or quit to end the REPL and let Ruby program keep running.

You can also use puts and p to print out values from your program as it is running.

I tried to follow the example given in both answers and it might be worth noting that it appears as though std::filesystem::directory_entry has been changed to not have an overload of the << operator. Instead of std::cout << p << std::endl; I had to use the following to be able to compile and get it working:

#include <iostream>
#include <filesystem>
#include <string>
namespace fs = std::filesystem;

int main() {
    std::string path = "/path/to/directory";
    for(const auto& p : fs::directory_iterator(path))
        std::cout << p.path() << std::endl;
}

trying to pass p on its own to std::cout << resulted in a missing overload error.

You've created a new repository and added some files to the index, but you haven't created your first commit yet. After you've done:

 git add a_text_file.txt 

... do:

 git commit -m "Initial commit."

... and those errors should go away.

nope. are you trying to do some aggregation? if so, you could do something like this to get what you need

;with a as
(
     select sum(IntField) as Total
     from Table
     group by CharField
)
select *, a.Total
from Table t
inner join a
on t.Field=a.Field

While we're big fans of Deis (deis.io) and are actively deploying to it, there are other Heroku like PaaS style deployment solutions out there, including:

Longshoreman from the Wayfinder folks:

https://github.com/longshoreman/longshoreman

Decker from the CloudCredo folks, using CloudFoundry:

http://www.cloudcredo.com/decker-docker-cloud-foundry/

As for straight up orchestration, NewRelic's opensource Centurion project seems quite promising:

https://github.com/newrelic/centurion

Are you testing/seeing this behaviour using IE? It's possible that IE is serving up those pages from the cache. It is notoriously hard to get IE to flush it's cache, and so on many occasions, even after you log out, typing the url of one of the "secured" pages would show the cached content from before.

(I've seen this behaviour even when you log as a different user, and IE shows the "Welcome " bar at the top of your page, with the old user's username. Nowadays, usually a reload will update it, but if it's persistant, it could still be a caching issue.)

My DiplayScaleHelper, that works perfectly:

import android.content.Context;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.ScaleDrawable;
import android.widget.Button;

public class DisplayHelper {

  public static void scaleButtonDrawables(Button btn, double fitFactor) {
        Drawable[] drawables = btn.getCompoundDrawables();

        for (int i = 0; i < drawables.length; i++) {
            if (drawables[i] != null) {
                if (drawables[i] instanceof ScaleDrawable) {
                    drawables[i].setLevel(1);
                }
                drawables[i].setBounds(0, 0, (int) (drawables[i].getIntrinsicWidth() * fitFactor),
                    (int) (drawables[i].getIntrinsicHeight() * fitFactor));
                ScaleDrawable sd = new ScaleDrawable(drawables[i], 0, drawables[i].getIntrinsicWidth(), drawables[i].getIntrinsicHeight());
                if(i == 0) {
                    btn.setCompoundDrawables(sd.getDrawable(), drawables[1], drawables[2], drawables[3]);
                } else if(i == 1) {
                    btn.setCompoundDrawables(drawables[0], sd.getDrawable(), drawables[2], drawables[3]);
                } else if(i == 2) {
                    btn.setCompoundDrawables(drawables[0], drawables[1], sd.getDrawable(), drawables[3]);
                } else {
                    btn.setCompoundDrawables(drawables[0], drawables[1], drawables[2], sd.getDrawable());
                }
            }
        }
    }
}

Yes definitely you can connect to the MySql online database for that you need to create a web service. This web service will provide you access to the MySql database. Then you can easily pull and push data to MySql Database. PHP will be a good option for creating web service its simple to implement. Good luck...

Check the node version using node -v. Check the npm version using npm -v. If these commands gave you version number you are good to go with NodeJs development

Time to test node

Create a Directory using mkdir NodeJs. Inside the NodeJs folder create a file using touch index.js. Open your index.js either using vi or in your favourite text editor. Type in console.log('Welcome to NodesJs.') and save it. Navigate back to your saved file and type node index.js. If you see Welcome to NodesJs. you did a nice job and you are up with NodeJs.

For ubuntu 16.04, there is firewall issue. You need to open 8080 port using following command:

sudo ufw allow 8080

Detailed steps are given here: https://www.digitalocean.com/community/tutorials/how-to-install-jenkins-on-ubuntu-16-04

By selecting 'Class Library' you were accidentally telling it to make a .Net Library using the CLI (managed) extenstion of C++.

Instead, create a Win32 project, and in the Application Settings on the next page, choose 'DLL'.

You can also make an MFC DLL or ATL DLL from those library choices if you want to go that route, but it sounds like you don't.

string * and string& differ in a couple of ways. First of all, the pointer points to the address location of the data. The reference points to the data. If you had the following function:

int foo(string *param1);

You would have to check in the function declaration to make sure that param1 pointed to a valid location. Comparatively:

int foo(string &param1);

Here, it is the caller's responsibility to make sure the pointed to data is valid. You can't pass a "NULL" value, for example, int he second function above.

With regards to your second question, about the method return values being a reference, consider the following three functions:

string &foo();
string *foo();
string foo();

In the first case, you would be returning a reference to the data. If your function declaration looked like this:

string &foo()
{
    string localString = "Hello!";
    return localString;
}

You would probably get some compiler errors, since you are returning a reference to a string that was initialized in the stack for that function. On the function return, that data location is no longer valid. Typically, you would want to return a reference to a class member or something like that.

The second function above returns a pointer in actual memory, so it would stay the same. You would have to check for NULL-pointers, though.

Finally, in the third case, the data returned would be copied into the return value for the caller. So if your function was like this:

string foo()
{
    string localString = "Hello!";
    return localString;
}

You'd be okay, since the string "Hello" would be copied into the return value for that function, accessible in the caller's memory space.

That's Oracle specific notation for an OUTER JOIN, because the ANSI-89 format (using a comma in the FROM clause to separate table references) didn't standardize OUTER joins.

The query would be re-written in ANSI-92 syntax as:

   SELECT ...
     FROM a
LEFT JOIN b ON b.id = a.id

This link is pretty good at explaining the difference between JOINs.

It should also be noted that even though the (+) works, Oracle recommends not using it:

Oracle recommends that you use the FROM clause OUTER JOIN syntax rather than the Oracle join operator. Outer join queries that use the Oracle join operator (+) are subject to the following rules and restrictions, which do not apply to the FROM clause OUTER JOIN syntax:

I'd like to suggest another approach to the "Oups I forgot to write sudo while opening my file" issue:

Instead of receiving a permission denied, and having to type :w!!, I find it more elegant to have a conditional vim command that does sudo vim if file owner is root.

This is as easy to implement (there might even be more elegant implementations, I'm clearly not a bash-guru):

function vim(){
  OWNER=$(stat -c '%U' $1)
  if [[ "$OWNER" == "root" ]]; then
    sudo /usr/bin/vim $*;
  else
    /usr/bin/vim $*;
  fi
}

And it works really well.

This is a more bash-centered approach than a vim-one so not everybody might like it.

Of course:

• there are use cases where it will fail (when file owner is not root but requires sudo, but the function can be edited anyway)
• it doesn't make sense when using vim for reading-only a file (as far as I'm concerned, I use tail or cat for small files)

But I find this brings a much better dev user experience, which is something that IMHO tends to be forgotten when using bash. :-)