Dependency Walker reports IESHIMS.DLL and WER.DLL missing?

1· Do I need these DLL's?

It depends since Dependency Walker is a little bit out of date and may report the wrong dependency.

Where can I get them?

most dlls can be found at https://www.dll-files.com

I believe they are supposed to located in C:\Windows\System32\Wer.dll and C:\Program Files\Internet Explorer\Ieshims.dll

For me leshims.dll can be placed at C:\Windows\System32\. Context: windows 7 64bit.

How do I determine the dependencies of a .NET application?

To browse .NET code dependencies, you can use the capabilities of the tool NDepend. The tool proposes:

a dependency graph
a dependency matrix,
and also some C# LINQ queries can be edited (or generated) to browse dependencies.

For example such query can look like:

from m in Methods 
let depth = m.DepthOfIsUsing("NHibernate.NHibernateUtil.Entity(Type)") 
where depth  >= 0 && m.IsUsing("System.IDisposable")
orderby depth
select new { m, depth }

And its result looks like: (notice the code metric depth, 1 is for direct callers, 2 for callers of direct callers...) (notice also the Export to Graph button to export the query result to a Call Graph)

The dependency graph looks like:

The dependency matrix looks like:

The dependency matrix is de-facto less intuitive than the graph, but it is more suited to browse complex sections of code like:

Disclaimer: I work for NDepend

How to print colored text to the terminal?

If you are using Django:

>>> from django.utils.termcolors import colorize
>>> print colorize("Hello, World!", fg="blue", bg='red',
...                 opts=('bold', 'blink', 'underscore',))
Hello World!
>>> help(colorize)

Snapshot:

(I generally use colored output for debugging on runserver terminal, so I added it.)

_{You can test if it is installed in your machine:
$ python -c "import django; print django.VERSION". To install it, check: How to install Django}

Give it a try!!

how to call an ASP.NET c# method using javascript

PageMethod an easier and faster approach for Asp.Net AJAX We can easily improve user experience and performance of web applications by unleashing the power of AJAX. One of the best things which I like in AJAX is PageMethod.

PageMethod is a way through which we can expose server side page's method in java script. This brings so many opportunities we can perform lots of operations without using slow and annoying post backs.

In this post I am showing the basic use of ScriptManager and PageMethod. In this example I am creating a User Registration form, in which user can register against his email address and password. Here is the markup of the page which I am going to develop:

<body>
    <form id="form1" runat="server">
    <div>
        <fieldset style="width: 200px;">
            <asp:Label ID="lblEmailAddress" runat="server" Text="Email Address"></asp:Label>
            <asp:TextBox ID="txtEmail" runat="server"></asp:TextBox>
            <asp:Label ID="lblPassword" runat="server" Text="Password"></asp:Label>
            <asp:TextBox ID="txtPassword" runat="server"></asp:TextBox>
        </fieldset>
        <div>
        </div>
        <asp:Button ID="btnCreateAccount" runat="server" Text="Signup"  />
    </div>
    </form>
</body>
</html>

To setup page method, first you have to drag a script manager on your page.

<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePageMethods="true">
</asp:ScriptManager>

Also notice that I have changed EnablePageMethods="true".
This will tell ScriptManager that I am going to call PageMethods from client side.

Now next step is to create a Server Side function.
Here is the function which I created, this function validates user's input:

[WebMethod]
public static string RegisterUser(string email, string password)
{
    string result = "Congratulations!!! your account has been created.";
    if (email.Length == 0)//Zero length check
    {
        result = "Email Address cannot be blank";
    }
    else if (!email.Contains(".") || !email.Contains("@")) //some other basic checks
    {
        result = "Not a valid email address";
    }
    else if (!email.Contains(".") || !email.Contains("@")) //some other basic checks
    {
        result = "Not a valid email address";
    }

    else if (password.Length == 0)
    {
        result = "Password cannot be blank";
    }
    else if (password.Length < 5)
    {
        result = "Password cannot be less than 5 chars";
    }

    return result;
}

To tell script manager that this method is accessible through javascript we need to ensure two things:
First: This method should be 'public static'.
Second: There should be a [WebMethod] tag above method as written in above code.

Now I have created server side function which creates account. Now we have to call it from client side. Here is how we can call that function from client side:

<script type="text/javascript">
    function Signup() {
        var email = document.getElementById('<%=txtEmail.ClientID %>').value;
        var password = document.getElementById('<%=txtPassword.ClientID %>').value;

        PageMethods.RegisterUser(email, password, onSucess, onError);

        function onSucess(result) {
            alert(result);
        }

        function onError(result) {
            alert('Cannot process your request at the moment, please try later.');
        }
    }
</script>

To call my server side method Register user, ScriptManager generates a proxy function which is available in PageMethods.
My server side function has two paramaters i.e. email and password, after that parameters we have to give two more function names which will be run if method is successfully executed (first parameter i.e. onSucess) or method is failed (second parameter i.e. result).

Now every thing seems ready, and now I have added OnClientClick="Signup();return false;" on my Signup button. So here complete code of my aspx page :

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:ScriptManager ID="ScriptManager1" runat="server" EnablePageMethods="true">
        </asp:ScriptManager>
        <fieldset style="width: 200px;">
            <asp:Label ID="lblEmailAddress" runat="server" Text="Email Address"></asp:Label>
            <asp:TextBox ID="txtEmail" runat="server"></asp:TextBox>
            <asp:Label ID="lblPassword" runat="server" Text="Password"></asp:Label>
            <asp:TextBox ID="txtPassword" runat="server"></asp:TextBox>
        </fieldset>
        <div>
        </div>
        <asp:Button ID="btnCreateAccount" runat="server" Text="Signup" OnClientClick="Signup();return false;" />
    </div>
    </form>
</body>
</html>

<script type="text/javascript">
    function Signup() {
        var email = document.getElementById('<%=txtEmail.ClientID %>').value;
        var password = document.getElementById('<%=txtPassword.ClientID %>').value;

        PageMethods.RegisterUser(email, password, onSucess, onError);

        function onSucess(result) {
            alert(result);
        }

        function onError(result) {
            alert('Cannot process your request at the moment, please try later.');
        }
    }
</script>

How do I call a dynamically-named method in Javascript?

Within a ServiceWorker or Worker, replace window with self:

self[method_prefix + method_name](arg1, arg2);

Workers have no access to the DOM, therefore window is an invalid reference. The equivalent global scope identifier for this purpose is self.

Converting XDocument to XmlDocument and vice versa

There is a discussion on http://blogs.msdn.com/marcelolr/archive/2009/03/13/fast-way-to-convert-xmldocument-into-xdocument.aspx

It seems that reading an XDocument via an XmlNodeReader is the fastest method. See the blog for more details.

How to monitor SQL Server table changes by using c#?

You can use the SqlDependency Class. Its intended use is mostly for ASP.NET pages (low number of client notifications).

ALTER DATABASE UrDb SET ENABLE_BROKER

Implement the OnChange event to get notified:

void OnChange(object sender, SqlNotificationEventArgs e)

And in code:

SqlCommand cmd = ...
cmd.Notification = null;

SqlDependency dependency = new SqlDependency(cmd);

dependency.OnChange += OnChange;

It uses the Service Broker (a message-based communication platform) to receive messages from the database engine.

java: HashMap<String, int> not working

GNU Trove support this but not using generics. http://trove4j.sourceforge.net/javadocs/gnu/trove/TObjectIntHashMap.html

Multiple conditions in if statement shell script

You are trying to compare strings inside an arithmetic command (((...))). Use [[ instead.

if [[ $username == "$username1" && $password == "$password1" ]] ||
   [[ $username == "$username2" && $password == "$password2" ]]; then

Note that I've reduced this to two separate tests joined by ||, with the && moved inside the tests. This is because the shell operators && and || have equal precedence and are simply evaluated from left to right. As a result, it's not generally true that a && b || c && d is equivalent to the intended ( a && b ) || ( c && d ).

how to convert binary string to decimal?

ES6 supports binary numeric literals for integers, so if the binary string is immutable, as in the example code in the question, one could just type it in as it is with the prefix 0b or 0B:

var binary = 0b1101000; // code for 104
console.log(binary); // prints 104

array_push() with key value pair

If you need to add multiple key=>value, then try this.

$data = array_merge($data, array("cat"=>"wagon","foo"=>"baar"));

Java integer list

If you want to rewrite a line on console, print a control character \r (carriage return).

List<Integer> myCoords = new ArrayList<Integer>();
myCoords.add(10);
myCoords.add(20);
myCoords.add(30);
myCoords.add(40);
myCoords.add(50);
Iterator<Integer> myListIterator = myCoords.iterator(); 
while (myListIterator.hasNext()) {
    Integer coord = myListIterator.next();     
    System.out.print("\r");
    System.out.print(coord);
    Thread.sleep(2000);
}

push() a two-dimensional array

you are calling the push() on an array element (int), where push() should be called on the array, also handling/filling the array this way makes no sense you can do it like this

for (var i = 0; i < rows - 1; i++)
{
  for (var j = c; j < cols; j++)
  {
    myArray[i].push(0);
  }
}


for (var i = r; i < rows - 1; i++)
{

  for (var j = 0; j < cols; j++)
  {
      col.push(0);
  }
}

you can also combine the two loops using an if condition, if row < r, else if row >= r

Excel 2010: how to use autocomplete in validation list

Here is a very good way to handle this (found on ozgrid):

Let's say your list is on Sheet2 and you wish to use the Validation List with AutoComplete on Sheet1.

On Sheet1 A1 Enter =Sheet2!A1 and copy down including as many spare rows as needed (say 300 rows total). Hide these rows and use this formula in the Refers to: for a dynamic named range called MyList:

=OFFSET(Sheet1!$A$1,0,0,MATCH("*",Sheet1!$A$1:$A$300,-1),1)

Now in the cell immediately below the last hidden row use Data Validation and for the List Source use =MyList

[EDIT] Adapted version for Excel 2007+ (couldn't test on 2010 though but AFAIK, there is nothing really specific to a version).
Let's say your data source is on Sheet2!A1:A300 and let's assume your validation list (aka autocomplete) is on cell Sheet1!A1.

Create a dynamic named range MyList that will depend on the value of the cell where you put the validation

=OFFSET(Sheet2!$A$1,MATCH(Sheet1!$A$1&"*",Sheet2!$A$1:$A$300,0)-1,0,COUNTA(Sheet2!$A:$A))
Add the validation list on cell Sheet1!A1 that will refert to the list =MyList

Caveats

This is not a real autocomplete as you have to type first and then click on the validation arrow : the list will then begin at the first matching element of your list
The list will go till the end of your data. If you want to be more precise (keep in the list only the matching elements), you can change the COUNTA with a SUMLPRODUCT that will calculate the number of matching elements
Your source list must be sorted

Passing a variable from one php include file to another: global vs. not

This is all you have to do:

In front.inc

global $name;
$name = 'james';

How to pass parameters to ThreadStart method in Thread?

The simplest is just

string filename = ...
Thread thread = new Thread(() => download(filename));
thread.Start();

The advantage(s) of this (over ParameterizedThreadStart) is that you can pass multiple parameters, and you get compile-time checking without needing to cast from object all the time.

Do checkbox inputs only post data if they're checked?

I resolved the problem with this code:

HTML Form

<input type="checkbox" id="is-business" name="is-business" value="off" onclick="changeValueCheckbox(this)" >
<label for="is-business">Soy empresa</label>

and the javascript function by change the checkbox value form:

//change value of checkbox element
function changeValueCheckbox(element){
   if(element.checked){
    element.value='on';
  }else{
    element.value='off';
  }
}

and the server checked if the data post is "on" or "off". I used playframework java

        final Map<String, String[]> data = request().body().asFormUrlEncoded();

        if (data.get("is-business")[0].equals('on')) {
            login.setType(new MasterValue(Login.BUSINESS_TYPE));
        } else {
            login.setType(new MasterValue(Login.USER_TYPE));
        }

How to pass multiple parameters in thread in VB

Pass multiple parameter for VB.NET 3.5

 Public Class MyWork

    Public Structure thread_Data            
        Dim TCPIPAddr As String
        Dim TCPIPPort As Integer            
    End Structure

    Dim STthread_Data As thread_Data
    STthread_Data.TCPIPAddr = "192.168.2.2"
    STthread_Data.TCPIPPort = 80  

    Dim multiThread As Thread = New Thread(AddressOf testthread)
    multiThread.SetApartmentState(ApartmentState.MTA)
    multiThread.Start(STthread_Data)     

    Private Function testthread(ByVal STthread_Data As thread_Data) 
        Dim IPaddr as string = STthread_Data.TCPIPAddr
        Dim IPport as integer = STthread_Data.TCPIPPort
        'Your work'        
    End Function

End Class

Elasticsearch : Root mapping definition has unsupported parameters index : not_analyzed

Check your Elastic version.

I had these problem because I was looking at the incorrect version's documentation.

Use custom build output folder when using create-react-app

If you have arrived at this question three years after its initial posting because this is still a problem for you, consider backing this proposal to support a new BUILD_PATH environment variable.

https://github.com/facebook/create-react-app/pull/8986

From the proposal's documentation:

By default, Create React App will output compiled assets to a /build directory adjacent to /src. You may use this variable to specify a new path for Create React App to output assets. BUILD_PATH should be specified as a path relative to the root of your project.

If this proposal is adopted, it would mean that customizing the output target for create-react-app becomes as simple as updating updating your build script:

// package.json
  "scripts": {
    "build": "BUILD_PATH='./dist' react-scripts build",
    // ...
  },

or adding a .env file to the root of your project:

# .env
BUILD_PATH='./dist'

How to remove carriage returns and new lines in Postgresql?

select regexp_replace(field, E'[\\n\\r\\u2028]+', ' ', 'g' )

I had the same problem in my postgres d/b, but the newline in question wasn't the traditional ascii CRLF, it was a unicode line separator, character U2028. The above code snippet will capture that unicode variation as well.

Update... although I've only ever encountered the aforementioned characters "in the wild", to follow lmichelbacher's advice to translate even more unicode newline-like characters, use this:

select regexp_replace(field, E'[\\n\\r\\f\\u000B\\u0085\\u2028\\u2029]+', ' ', 'g' )

'heroku' does not appear to be a git repository

I had to run the Windows Command Prompt with Administrator privileges

How to change the Spyder editor background to dark?

In Spyder 2.3.8 on Ubuntu, I found several settings to do this - each one for a different part of the window... Seems that you can't make all areas dark though.

And the final result looks like this:

Android ImageButton with a selected state?

Try this:

 <item
   android:state_focused="true"
   android:state_enabled="true"
   android:drawable="@drawable/map_toolbar_details_selected" />

Also for colors i had success with

<selector
        xmlns:android="http://schemas.android.com/apk/res/android">
        <item
            android:state_selected="true"

            android:color="@color/primary_color" />
        <item
            android:color="@color/secondary_color" />
</selector>

php $_GET and undefined index

I was having the same problem in localhost with xampp. Now I'm using this combination of parameters:

// Report all errors except E_NOTICE
// This is the default value set in php.ini
error_reporting(E_ALL ^ E_NOTICE);

php.net: http://php.net/manual/pt_BR/function.error-reporting.php

How to send POST in angularjs with multiple params?

var name = $scope.username;
var pwd = $scope.password;

var req = {
    method: 'POST',
    url: '../Account/LoginAccount',
    headers: {
        'Content-Type': undefined
    },
    params: { username: name, password: pwd }
}

$http(req).then(function (responce) {
    // success function
}, function (responce) {
    // Failure Function
});

How to build and run Maven projects after importing into Eclipse IDE

When you add dependency in pom.xml , do a maven clean , and then maven build , it will add the jars into you project.

You can search dependency artifacts at http://mvnrepository.com/

And if it doesn't add jars it should give you errors which will mean that it is not able to fetch the jar, that could be due to broken repository or connection problems.

Well sometimes if it is one or two jars, better download them and add to build path , but with a lot of dependencies use maven.

Using setDate in PreparedStatement

tl;dr

With JDBC 4.2 or later and java 8 or later:

myPreparedStatement.setObject( … , myLocalDate  )

…and…

myResultSet.getObject( … , LocalDate.class )

Details

The Answer by Vargas is good about mentioning java.time types but refers only to converting to java.sql.Date. No need to convert if your driver is updated.

java.time

The java.time framework is built into Java 8 and later. These classes supplant the old troublesome date-time classes such as java.util.Date, .Calendar, & java.text.SimpleDateFormat. The Joda-Time team also advises migration to java.time.

To learn more, see the Oracle Tutorial. And search Stack Overflow for many examples and explanations.

Much of the java.time functionality is back-ported to Java 6 & 7 in ThreeTen-Backport and further adapted to Android in ThreeTenABP.

`LocalDate`

In java.time, the java.time.LocalDate class represents a date-only value without time-of-day and without time zone.

If using a JDBC driver compliant with JDBC 4.2 or later spec, no need to use the old java.sql.Date class. You can pass/fetch LocalDate objects directly to/from your database via PreparedStatement::setObject and ResultSet::getObject.

LocalDate localDate = LocalDate.now( ZoneId.of( "America/Montreal" ) );
myPreparedStatement.setObject( 1 , localDate  );

…and…

LocalDate localDate = myResultSet.getObject( 1 , LocalDate.class );

Before JDBC 4.2, convert

If your driver cannot handle the java.time types directly, fall back to converting to java.sql types. But minimize their use, with your business logic using only java.time types.

New methods have been added to the old classes for conversion to/from java.time types. For java.sql.Date see the valueOf and toLocalDate methods.

java.sql.Date sqlDate = java.sql.Date.valueOf( localDate );

…and…

LocalDate localDate = sqlDate.toLocalDate();

Placeholder value

Be wary of using 0000-00-00 as a placeholder value as shown in your Question’s code. Not all databases and other software can handle going back that far in time. I suggest using something like the commonly-used Unix/Posix epoch reference date of 1970, 1970-01-01.

LocalDate EPOCH_DATE = LocalDate.ofEpochDay( 0 ); // 1970-01-01 is day 0 in Epoch counting.

About java.time

The java.time framework is built into Java 8 and later. These classes supplant the troublesome old legacy date-time classes such as java.util.Date, Calendar, & SimpleDateFormat.

The Joda-Time project, now in maintenance mode, advises migration to the java.time classes.

To learn more, see the Oracle Tutorial. And search Stack Overflow for many examples and explanations. Specification is JSR 310.

You may exchange java.time objects directly with your database. Use a JDBC driver compliant with JDBC 4.2 or later. No need for strings, no need for java.sql.* classes.

Where to obtain the java.time classes?

Java SE 8, Java SE 9, Java SE 10, and later
- Built-in.
- Part of the standard Java API with a bundled implementation.
- Java 9 adds some minor features and fixes.
Java SE 6 and Java SE 7
- Much of the java.time functionality is back-ported to Java 6 & 7 in ThreeTen-Backport.
Android
- Later versions of Android bundle implementations of the java.time classes.
- For earlier Android (<26), the ThreeTenABP project adapts ThreeTen-Backport (mentioned above). See How to use ThreeTenABP….

The ThreeTen-Extra project extends java.time with additional classes. This project is a proving ground for possible future additions to java.time. You may find some useful classes here such as Interval, YearWeek, YearQuarter, and more.

How to prettyprint a JSON file?

Here's a simple example of pretty printing JSON to the console in a nice way in Python, without requiring the JSON to be on your computer as a local file:

import pprint
import json 
from urllib.request import urlopen # (Only used to get this example)

# Getting a JSON example for this example 
r = urlopen("https://mdn.github.io/fetch-examples/fetch-json/products.json")
text = r.read() 

# To print it
pprint.pprint(json.loads(text))

How do I use a custom Serializer with Jackson?

I wrote an example for a custom Timestamp.class serialization/deserialization, but you could use it for what ever you want.

When creating the object mapper do something like this:

public class JsonUtils {

    public static ObjectMapper objectMapper = null;

    static {
        objectMapper = new ObjectMapper();
        SimpleModule s = new SimpleModule();
        s.addSerializer(Timestamp.class, new TimestampSerializerTypeHandler());
        s.addDeserializer(Timestamp.class, new TimestampDeserializerTypeHandler());
        objectMapper.registerModule(s);
    };
}

for example in java ee you could initialize it with this:

import java.time.LocalDateTime;

import javax.ws.rs.ext.ContextResolver;
import javax.ws.rs.ext.Provider;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.module.SimpleModule;

@Provider
public class JacksonConfig implements ContextResolver<ObjectMapper> {

    private final ObjectMapper objectMapper;

    public JacksonConfig() {
        objectMapper = new ObjectMapper();
        SimpleModule s = new SimpleModule();
        s.addSerializer(Timestamp.class, new TimestampSerializerTypeHandler());
        s.addDeserializer(Timestamp.class, new TimestampDeserializerTypeHandler());
        objectMapper.registerModule(s);
    };

    @Override
    public ObjectMapper getContext(Class<?> type) {
        return objectMapper;
    }
}

where the serializer should be something like this:

import java.io.IOException;
import java.sql.Timestamp;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;

public class TimestampSerializerTypeHandler extends JsonSerializer<Timestamp> {

    @Override
    public void serialize(Timestamp value, JsonGenerator jgen, SerializerProvider provider) throws IOException, JsonProcessingException {
        String stringValue = value.toString();
        if(stringValue != null && !stringValue.isEmpty() && !stringValue.equals("null")) {
            jgen.writeString(stringValue);
        } else {
            jgen.writeNull();
        }
    }

    @Override
    public Class<Timestamp> handledType() {
        return Timestamp.class;
    }
}

and deserializer something like this:

import java.io.IOException;
import java.sql.Timestamp;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.SerializerProvider;

public class TimestampDeserializerTypeHandler extends JsonDeserializer<Timestamp> {

    @Override
    public Timestamp deserialize(JsonParser jp, DeserializationContext ds) throws IOException, JsonProcessingException {
        SqlTimestampConverter s = new SqlTimestampConverter();
        String value = jp.getValueAsString();
        if(value != null && !value.isEmpty() && !value.equals("null"))
            return (Timestamp) s.convert(Timestamp.class, value);
        return null;
    }

    @Override
    public Class<Timestamp> handledType() {
        return Timestamp.class;
    }
}

How do you upload a file to a document library in sharepoint?

if you get this error "Value does not fall within the expected range" in this line:

SPFolder myLibrary = oWeb.Folders[documentLibraryName];

use instead this to fix the error:

SPFolder myLibrary = oWeb.GetList(URL OR NAME).RootFolder;

Use always URl to get Lists or others because they are unique, names are not the best way ;)

Get human readable version of file size?

This feature if available in Boltons which is a very handy library to have for most projects.

>>> bytes2human(128991)
'126K'
>>> bytes2human(100001221)
'95M'
>>> bytes2human(0, 2)
'0.00B'

PHP form - on submit stay on same page

You can use the # action in a form action:

<?php
    if(isset($_POST['SubmitButton'])){ // Check if form was submitted

        $input = $_POST['inputText']; // Get input text
        $message = "Success! You entered: " . $input;
    }
?>

<html>
    <body>
        <form action="#" method="post">
            <?php echo $message; ?>
            <input type="text" name="inputText"/>
            <input type="submit" name="SubmitButton"/>
        </form>
    </body>
</html>

Double Iteration in List Comprehension

I feel this is easier to understand

[row[i] for row in a for i in range(len(a))]

result: [1, 2, 3, 4]

How to combine two strings together in PHP?

I believe the most performant way is:

$data1 = "the color is";
$data2 = "red";
$result = $data1 . ' ' . $data2;

If you want to implement localisation, you may do something like this:

$translationText = "the color is %s";
$translationRed  = "red";
$result = sprintf($translationText, $translationRed);

It's a bit slower, but it does not assume grammar rules.

Git push error pre-receive hook declined

You might not have developer access to the project or master branch. You need dev access to push new work up.

New work meaning new branches and commits.

How do you fadeIn and animate at the same time?

For people still looking a couple of years later, things have changed a bit. You can now use the queue for .fadeIn() as well so that it will work like this:

$('.tooltip').fadeIn({queue: false, duration: 'slow'});
$('.tooltip').animate({ top: "-10px" }, 'slow');

This has the benefit of working on display: none elements so you don't need the extra two lines of code.

How to write inside a DIV box with javascript

You can use one of the following methods:

document.getElementById('log').innerHTML = "text";

document.getElementById('log').innerText = "text";

document.getElementById('log').textContent = "text";

For Jquery:

$("#log").text("text");

$("#log").html("text");

What's the difference between subprocess Popen and call (how can I use them)?

The other answer is very complete, but here is a rule of thumb:

call is blocking:

call('notepad.exe')
print('hello')  # only executed when notepad is closed

Popen is non-blocking:

Popen('notepad.exe')
print('hello')  # immediately executed

When should the xlsm or xlsb formats be used?

Just for posterity, here's the text from several external sources regarding the Excel file formats. Some of these have been mentioned in other answers to this question but without reproducing the essential content.

1. From Doug Mahugh, August 22, 2006:

...the new XLSB binary format. Like Open XML, it’s a full-fidelity file format that can store anything you can create in Excel, but the XLSB format is optimized for performance in ways that aren’t possible with a pure XML format.

The XLSB format (also sometimes referred to as BIFF12, as in “binary file format for Office 12”) uses the same Open Packaging Convention used by the Open XML formats and XPS. So it’s basically a ZIP container, and you can open it with any ZIP tool to see what’s inside. But instead of .XML parts within the package, you’ll find .BIN parts...

This article also refers to documentation about the BIN format, too lengthy to reproduce here.

2. From MSDN Archive, August 29, 2006 which in turn cites an already-missing blog post regarding the XLSB format:

Even though we’ve done a lot of work to make sure that our XML formats open quickly and efficiently, this binary format is still more efficient for Excel to open and save, and can lead to some performance improvements for workbooks that contain a lot of data, or that would require a lot of XML parsing during the Open process. (In fact, we’ve found that the new binary format is faster than the old XLS format in many cases.) Also, there is no macro-free version of this file format – all XLSB files can contain macros (VBA and XLM). In all other respects, it is functionally equivalent to the XML file format above:

File size – file size of both formats is approximately the same, since both formats are saved to disk using zip compression Architecture – both formats use the same packaging structure, and both have the same part-level structures. Feature support – both formats support exactly the same feature set Runtime performance – once loaded into memory, the file format has no effect on application/calculation speed Converters – both formats will have identical converter support

Group By Eloquent ORM

try: ->unique('column')

example:

$users = User::get()->unique('column');

Inputting a default image in case the src attribute of an html <img> is not valid?

<style type="text/css">
img {
   background-image: url('/images/default.png')
}
</style>

Be sure to enter dimensions of image and whether you want the image to tile or not.

What's the difference between eval, exec, and compile?

exec is not an expression: a statement in Python 2.x, and a function in Python 3.x. It compiles and immediately evaluates a statement or set of statement contained in a string. Example:

 exec('print(5)')           # prints 5.
 # exec 'print 5'     if you use Python 2.x, nor the exec neither the print is a function there
 exec('print(5)\nprint(6)')  # prints 5{newline}6.
 exec('if True: print(6)')  # prints 6.
 exec('5')                 # does nothing and returns nothing.

eval is a built-in function (not a statement), which evaluates an expression and returns the value that expression produces. Example:

 x = eval('5')              # x <- 5
 x = eval('%d + 6' % x)     # x <- 11
 x = eval('abs(%d)' % -100) # x <- 100
 x = eval('x = 5')          # INVALID; assignment is not an expression.
 x = eval('if 1: x = 4')    # INVALID; if is a statement, not an expression.

compile is a lower level version of exec and eval. It does not execute or evaluate your statements or expressions, but returns a code object that can do it. The modes are as follows:
compile(string, '', 'eval') returns the code object that would have been executed had you done eval(string). Note that you cannot use statements in this mode; only a (single) expression is valid.
compile(string, '', 'exec') returns the code object that would have been executed had you done exec(string). You can use any number of statements here.
compile(string, '', 'single') is like the exec mode but expects exactly one expression/statement, eg compile('a=1 if 1 else 3', 'myf', mode='single')

How to set column header text for specific column in Datagridview C#

If you work with visual studio designer, you will probably have defined fields for each columns in the YourForm.Designer.cs file e.g.:

private System.Windows.Forms.DataGridViewCheckBoxColumn dataGridViewCheckBoxColumn1;    
private System.Windows.Forms.DataGridViewTextBoxColumn dataGridViewTextBoxColumn2;

If you give them useful names, you can set the HeaderText easily:

usefulNameForDataGridViewTextBoxColumn.HeaderText = "Useful Header Text";

"The import org.springframework cannot be resolved."

The only solution worked for me is add maven-compiler-plugin to the pom.xml

<project ...>
    ...
    <build>
        ...
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                    <fork>true</fork>
                    <executable>C:\Program Files\Java\jdk1.7.0_79\bin\javac</executable>
                </configuration>
            </plugin>
        </plugins>
    </build>
    ...
</project>

RSA encryption and decryption in Python

Here is my implementation for python 3 and pycrypto

from Crypto.PublicKey import RSA
key = RSA.generate(4096)
f = open('/home/john/Desktop/my_rsa_public.pem', 'wb')
f.write(key.publickey().exportKey('PEM'))
f.close()
f = open('/home/john/Desktop/my_rsa_private.pem', 'wb')
f.write(key.exportKey('PEM'))
f.close()

f = open('/home/john/Desktop/my_rsa_public.pem', 'rb')
f1 = open('/home/john/Desktop/my_rsa_private.pem', 'rb')
key = RSA.importKey(f.read())
key1 = RSA.importKey(f1.read())

x = key.encrypt(b"dddddd",32)

print(x)
z = key1.decrypt(x)
print(z)

C# difference between == and Equals()

The == operator can be used to compare two variables of any kind, and it simply compares the bits.

int a = 3;
byte b = 3;
if (a == b) { // true }

Note : there are more zeroes on the left side of the int but we don't care about that here.

int a (00000011) == byte b (00000011)

Remember == operator cares only about the pattern of the bits in the variable.

Use == If two references (primitives) refers to the same object on the heap.

Rules are same whether the variable is a reference or primitive.

Foo a = new Foo();
Foo b = new Foo();
Foo c = a;

if (a == b) { // false }
if (a == c) { // true }
if (b == c) { // false }

a == c is true a == b is false

the bit pattern are the same for a and c, so they are equal using ==.

Equal():

Use the equals() method to see if two different objects are equal.

Such as two different String objects that both represent the characters in "Jane"

Change jsp on button click

If all you are looking for is navigation to page 2 and 3 from page one, replace the buttons with anchor elements as below:

<form name="TrainerMenu" action="TrainerMenu" method="get">

<h1>Benvenuto in LESSON! Scegli l'operazione da effettuare:</h1>
<a href="Page2.jsp" id="CreateCourse" >Creazione Nuovo Corso</a>&nbsp;
<a href="Page3.jsp" id="AuthorizationManager">Gestione Autorizzazioni</a>
<input type="button" value="" name="AuthorizationManager" />
</form>

If for some reason you need to use buttons, try this:

<form name="TrainerMenu" action="TrainerMenu" method="get">

   <h1>Benvenuto in LESSON! Scegli l'operazione da effettuare:</h1>
   <input type="button" value="Creazione Nuovo Corso" name="CreateCourse"
    onclick="openPage('Page2.jsp')"/>
   <input type="button" value="Gestione Autorizzazioni" name="AuthorizationManager"
    onclick="openPage('Page3.jsp')" />

</form>
<script type="text/javascript">
 function openPage(pageURL)
 {
 window.location.href = pageURL;
 }
</script>

How to get the process ID to kill a nohup process?

Today I met the same problem. And since it was a long time ago, I totally forgot which command I used and when. I tried three methods:

Using the STIME shown in ps -ef command. This shows the time you start your process, and it's very likely that you nohup you command just before you close ssh(depends on you) . Unfortunately I don't think the latest command is the command I run using nohup, so this doesn't work for me.
Second is the PPID, also shown in ps -ef command. It means Parent Process ID, the ID of process that creates the process. The ppid is 1 in ubuntu for process that using nohup to run. Then you can use ps --ppid "1" to get the list, and check TIME(the total CPU time your process use) or CMD to find the process's PID.
Use lsof -i:port if the process occupy some ports, and you will get the command. Then just like the answer above, use ps -ef | grep command and you will get the PID.

Once you find the PID of the process, then can use kill pid to terminal the process.

ADB No Devices Found

Turn on debugging in the Nexus settings Developer menu (tap "About Tablet" 7 times to get that menu).

Freaking Google tricks!

spacing between form fields

In your CSS file:

input { margin-bottom: 10px; }

How do I retrieve my MySQL username and password?

mysql -u username -p
Enter password:****

Then run the following command:

mysql> SELECT * FROM mysql.user;

After that copy encrypted md5 password for corresponding user and there are several online password decrypted application available in web. Using this decrypt password and use this for login in next time. or update user password using flowing command:

mysql> UPDATE mysql.user SET Password=PASSWORD('[password]') WHERE User='[username]';

Then login using the new password and user.

Why does npm install say I have unmet dependencies?

npm install will install all the packages from npm-shrinkwrap.json, but might ignore packages in package.json, if they're not preset in the former.

If you're project has a npm-shrinkwrap.json, make sure you run npm shrinkwrap to regenerate it, each time you add add/remove/change package.json.

Why is there no multiple inheritance in Java, but implementing multiple interfaces is allowed?

* This is a simple answer since I'm a beginner in Java *

Consider there are three classes X,Y and Z.

So we are inheriting like X extends Y, Z And both Y and Z is having a method alphabet() with same return type and arguments. This method alphabet() in Y says to display first alphabet and method alphabet in Z says display last alphabet. So here comes ambiguity when alphabet() is called by X. Whether it says to display first or last alphabet??? So java is not supporting multiple inheritance. In case of Interfaces, consider Y and Z as interfaces. So both will contain the declaration of method alphabet() but not the definition. It won't tell whether to display first alphabet or last alphabet or anything but just will declare a method alphabet(). So there is no reason to raise the ambiguity. We can define the method with anything we want inside class X.

So in a word, in Interfaces definition is done after implementation so no confusion.

How to base64 encode image in linux bash / shell

There is a Linux command for that: base64

base64 DSC_0251.JPG >DSC_0251.b64

To assign result to variable use

test=`base64 DSC_0251.JPG`

How do I create a timer in WPF?

Adding to the above. You use the Dispatch timer if you want the tick events marshalled back to the UI thread. Otherwise I would use System.Timers.Timer.

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'MyController':

Exception clearly indicates the problem.

CompteDAOHib: No default constructor found

For spring to instantiate your bean, you need to provide a empty constructor for your class CompteDAOHib.

How to iterate for loop in reverse order in swift?

Apply the reverse function to the range to iterate backwards:

For Swift 1.2 and earlier:

// Print 10 through 1
for i in reverse(1...10) {
    println(i)
}

It also works with half-open ranges:

// Print 9 through 1
for i in reverse(1..<10) {
    println(i)
}

Note: reverse(1...10) creates an array of type [Int], so while this might be fine for small ranges, it would be wise to use lazy as shown below or consider the accepted stride answer if your range is large.

To avoid creating a large array, use lazy along with reverse(). The following test runs efficiently in a Playground showing it is not creating an array with one trillion Ints!

Test:

var count = 0
for i in lazy(1...1_000_000_000_000).reverse() {
    if ++count > 5 {
        break
    }
    println(i)
}

For Swift 2.0 in Xcode 7:

for i in (1...10).reverse() {
    print(i)
}

Note that in Swift 2.0, (1...1_000_000_000_000).reverse() is of type ReverseRandomAccessCollection<(Range<Int>)>, so this works fine:

var count = 0
for i in (1...1_000_000_000_000).reverse() {
    count += 1
    if count > 5 {
        break
    }
    print(i)
}

For Swift 3.0 reverse() has been renamed to reversed():

for i in (1...10).reversed() {
    print(i) // prints 10 through 1
}

How can I increase the JVM memory?

When calling java use the -Xmx Flag for example -Xmx512m for 512 megs for the heap size. You may also want to consider the -xms flag to start the heap larger if you are going to have it grow right from the start. The default size is 128megs.

How to set focus on input field?

It's easy.. try this

html

<select id="ddl00">  
 <option>"test 01"</option>  
</select>

javascript

document.getElementById("ddl00").focus();

UnicodeEncodeError: 'latin-1' codec can't encode character

You are trying to store a Unicode codepoint \u201c using an encoding ISO-8859-1 / Latin-1 that can't describe that codepoint. Either you might need to alter the database to use utf-8, and store the string data using an appropriate encoding, or you might want to sanitise your inputs prior to storing the content; i.e. using something like Sam Ruby's excellent i18n guide. That talks about the issues that windows-1252 can cause, and suggests how to process it, plus links to sample code!

Sequel Pro Alternative for Windows

I use SQLYog at home and work. It turns out they DO have a free open-source version, though sadly they've been trying to hide that fact for the last few years.

You can download the open-source version from https://github.com/webyog/sqlyog-community - just click the "Download SQLyog Community Version" link.

Error : Program type already present: android.support.design.widget.CoordinatorLayout$Behavior

I had this problem too; and i resolved that in this way:

configurations.all {
resolutionStrategy.eachDependency { DependencyResolveDetails details ->
    def requested = details.requested
    if (requested.group == 'com.android.support') {
        if (!requested.name.startsWith("multidex")) {
            details.useVersion '26.0.1'
        }
    }
  }
}

be careful my min SDk was 26 , you have to change it with yours!

How to initialize a list of strings (List<string>) with many string values

You haven't really asked a question, but the code should be

List<string> optionList = new List<string> { "string1", "string2", ..., "stringN"};

i.e. no trailing () after the list.

appending list but error 'NoneType' object has no attribute 'append'

list is mutable

Change

last_list=last_list.append(p.last_name)

last_list.append(p.last_name)

will work

Vertical Alignment of text in a table cell

valign="top" should do the work.

_x000D_

<tr>_x000D_
  <td valign="top">Description</td>_x000D_
</tr>

_x000D_

How to style the option of an html "select" element?

Some properties can be styled for<option> tag:

font-family
color
font-*
background-color

Also you can use custom font for individual <option> tag, for example any google font, Material Icons or other icon fonts from icomoon or alike. (That may come handy for font selectors etc.)

Considering that, you can create font-family stack and insert icons in <option> tags, eg.

    <select>
        <option style="font-family: 'Icons', 'Roboto', sans-serif;">a    ???</option>
        <option style="font-family: 'Icons', 'Roboto', sans-serif;">b    ????</option>
    </select>

where ? is taken from Icons and the rest is from Roboto.

Note though that custom fonts do not work for mobile select.

bash string equality

There's no difference, == is a synonym for = (for the C/C++ people, I assume). See here, for example.

You could double-check just to be really sure or just for your interest by looking at the bash source code, should be somewhere in the parsing code there, but I couldn't find it straightaway.

Darken background image on hover

Add css:

.image{
    opacity:.5;
}

.image:hover{
    // CSS properties
    opacity:1;
}

Most popular screen sizes/resolutions on Android phones

The vast majority of current android 2.1+ phone screens are 480x800 (or in the case of motodroid oddities, 480x854)

However, this doesn't mean this should be your only concern. You need to make it looking good on tablets, and smaller or 4:3 ratio smaller screens.

RelativeLayout is your friend!

Is not an enclosing class Java

I have encountered the same problem. I solved by creating an instance for every inner public Class. as for you situation, i suggest you use inheritance other than inner classes.

public class Shape {

    private String shape;

    public ZShape zShpae;
    public SShape sShape;

    public Shape(){
      int[][] coords =  noShapeCoords;
      shape = "NoShape";
      zShape = new ZShape();
      sShape = new SShape();
    }

    class ZShape{
      int[][] coords =  zShapeCoords;
      String shape = "ZShape";
    }

    class SShape{
      int[][] coords = sShapeCoords;
      String shape = "SShape";
    }

 //etc
}

then you can new Shape(); and visit ZShape through shape.zShape;

reading an XML file in a C++ program

Xcode Debugger: view value of variable

Also you can:

Set a breakpoint to pause the execution.
The object must be inside the execution scope
Move the mouse pointer over the object or variable
A yellow tooltip will appear
Move the mouse over the tooltip
Click over the two little arrows pointing up and down
A context menu will pop up
Select "Print Description", it will execute a [object description]
The description will appear in the console's output

IMHO a little bit hidden and cumbersome...

Why does git revert complain about a missing -m option?

I had this problem, the solution was to look at the commit graph (using gitk) and see that I had the following:

*   commit I want to cherry-pick (x)
|\  
| * branch I want to cherry-pick to (y)
* | 
|/  
* common parent (x)

I understand now that I want to do

git cherry-pick -m 2 mycommitsha

This is because -m 1 would merge based on the common parent where as -m 2 merges based on branch y, that is the one I want to cherry-pick to.

Laravel Eloquent compare date from datetime field

Laravel 4+ offers you these methods: whereDay(), whereMonth(), whereYear() (#3946) and whereDate() (#6879).

They do the SQL DATE() work for you, and manage the differences of SQLite.

Your result can be achieved as so:

->whereDate('date', '<=', '2014-07-10')

For more examples, see first message of #3946 and this Laravel Daily article.

Update: Though the above method is convenient, as noted by Arth it is inefficient on large datasets, because the DATE() SQL function has to be applied on each record, thus discarding the possible index.

Here are some ways to make the comparison (but please read notes below):

->where('date', '<=', '2014-07-10 23:59:59')

->where('date', '<', '2014-07-11')

// '2014-07-11'
$dayAfter = (new DateTime('2014-07-10'))->modify('+1 day')->format('Y-m-d');

->where('date', '<', $dayAfter)

Notes:

23:59:59 is okay (for now) because of the 1-second precision, but have a look at this article: 23:59:59 is not the end of the day. No, really!
Keep in mind the "zero date" case ("0000-00-00 00:00:00"). Though, these "zero dates" should be avoided, they are source of so many problems. Better make the field nullable if needed.

Binding a WPF ComboBox to a custom list

I had a similar issue where the SelectedItem never got updated.

My problem was that the selected item was not the same instance as the item contained in the list. So I simply had to override the Equals() method in my MyCustomObject and compare the IDs of those two instances to tell the ComboBox that it's the same object.

public override bool Equals(object obj)
{
    return this.Id == (obj as MyCustomObject).Id;
}

How to check if a table exists in a given schema

It depends on what you want to test exactly.

Information schema?

To find "whether the table exists" (no matter who's asking), querying the information schema (information_schema.tables) is incorrect, strictly speaking, because (per documentation):

Only those tables and views are shown that the current user has access to (by way of being the owner or having some privilege).

The query provided by @kong can return FALSE, but the table can still exist. It answers the question:

How to check whether a table (or view) exists, and the current user has access to it?

SELECT EXISTS (
   SELECT FROM information_schema.tables 
   WHERE  table_schema = 'schema_name'
   AND    table_name   = 'table_name'
   );

The information schema is mainly useful to stay portable across major versions and across different RDBMS. But the implementation is slow, because Postgres has to use sophisticated views to comply to the standard (information_schema.tables is a rather simple example). And some information (like OIDs) gets lost in translation from the system catalogs - which actually carry all information.

System catalogs

Your question was:

How to check whether a table exists?

SELECT EXISTS (
   SELECT FROM pg_catalog.pg_class c
   JOIN   pg_catalog.pg_namespace n ON n.oid = c.relnamespace
   WHERE  n.nspname = 'schema_name'
   AND    c.relname = 'table_name'
   AND    c.relkind = 'r'    -- only tables
   );

Use the system catalogs pg_class and pg_namespace directly, which is also considerably faster. However, per documentation on pg_class:

The catalog pg_class catalogs tables and most everything else that has columns or is otherwise similar to a table. This includes indexes (but see also pg_index), sequences, views, materialized views, composite types, and TOAST tables;

For this particular question you can also use the system view pg_tables. A bit simpler and more portable across major Postgres versions (which is hardly of concern for this basic query):

SELECT EXISTS (
   SELECT FROM pg_tables
   WHERE  schemaname = 'schema_name'
   AND    tablename  = 'table_name'
   );

Identifiers have to be unique among all objects mentioned above. If you want to ask:

How to check whether a name for a table or similar object in a given schema is taken?

SELECT EXISTS (
   SELECT FROM pg_catalog.pg_class c
   JOIN   pg_catalog.pg_namespace n ON n.oid = c.relnamespace
   WHERE  n.nspname = 'schema_name'
   AND    c.relname = 'table_name'
   );

Related answer on dba.SE discussing "Information schema vs. system catalogs"

Alternative: cast to `regclass`

SELECT 'schema_name.table_name'::regclass

This raises an exception if the (optionally schema-qualified) table (or other object occupying that name) does not exist.

If you do not schema-qualify the table name, a cast to regclass defaults to the search_path and returns the OID for the first table found - or an exception if the table is in none of the listed schemas. Note that the system schemas pg_catalog and pg_temp (the schema for temporary objects of the current session) are automatically part of the search_path.

You can use that and catch a possible exception in a function. Example:

Check if sequence exists in Postgres (plpgsql)

A query like above avoids possible exceptions and is therefore slightly faster.

`to_regclass(rel_name)` in Postgres 9.4+

Much simpler now:

SELECT to_regclass('schema_name.table_name');

Same as the cast, but it returns ...

... null rather than throwing an error if the name is not found

Fix columns in horizontal scrolling

Solved using JavaScript + jQuery! I just need similar solution to my project but current solution with HTML and CSS is not ok for me because there is issue with column height + I need more then one column to be fixed. So I create simple javascript solution using jQuery

You can try it here https://jsfiddle.net/kindrosker/ffwqvntj/

All you need is setup home many columsn will be fixed in data-count-fixed-columns parameter

<table class="table" data-count-fixed-columns="2" cellpadding="0" cellspacing="0">

and run js function

app_handle_listing_horisontal_scroll($('#table-listing'))

No module named _sqlite3

Putting answer for anyone who lands on this page searching for a solution for Windows OS:

You have to install pysqlite3 or db-sqlite3 if not already installed. you can use following to install.

pip install pysqlite3
pip install db-sqlite3

For me the issue was with DLL file of sqlite3.

Solution:

I took DLL file from sqlite site. This might vary based on your version of python installation.
I pasted it in the DLL directory of the env. for me it was "C:\Anaconda\Lib\DLLs", but check for yours.

Configure Nginx with proxy_pass

Give this a try...

server {
    listen   80;
    server_name  dev.int.com;
    access_log off;
    location / {
        proxy_pass http://IP:8080;
        proxy_set_header    Host            $host;
        proxy_set_header    X-Real-IP       $remote_addr;
        proxy_set_header    X-Forwarded-for $remote_addr;
        port_in_redirect off;
        proxy_redirect   http://IP:8080/jira  /;
        proxy_connect_timeout 300;
    }

    location ~ ^/stash {
        proxy_pass http://IP:7990;
        proxy_set_header    Host            $host;
        proxy_set_header    X-Real-IP       $remote_addr;
        proxy_set_header    X-Forwarded-for $remote_addr;
        port_in_redirect off;
        proxy_redirect   http://IP:7990/  /stash;
        proxy_connect_timeout 300;
    }

    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/local/nginx/html;
    }
}

What is the easiest way to parse an INI File in C++?

If you are already using Qt

QSettings my_settings("filename.ini", QSettings::IniFormat);

Then read a value

my_settings.value("GroupName/ValueName", <<DEFAULT_VAL>>).toInt()

There are a bunch of other converter that convert your INI values into both standard types and Qt types. See Qt documentation on QSettings for more information.

Can anyone explain IEnumerable and IEnumerator to me?

IEnumerable is a box that contains Ienumerator. IEnumerable is base interface for all the collections. foreach loop can operate if the collection implements IEnumerable. In the below code it explains the step of having our own Enumerator. Lets first define our Class of which we are going to make the collection.

public class Customer
{
    public String Name { get; set; }
    public String City { get; set; }
    public long Mobile { get; set; }
    public double Amount { get; set; }
}

Now we will define the Class which will act as a collection for our class Customer. Notice that it is implementing the interface IEnumerable. So that we have to implement the method GetEnumerator. This will return our custom Enumerator.

public class CustomerList : IEnumerable
{
    Customer[] customers = new Customer[4];
    public CustomerList()
    {
        customers[0] = new Customer { Name = "Bijay Thapa", City = "LA", Mobile = 9841639665, Amount = 89.45 };
        customers[1] = new Customer { Name = "Jack", City = "NYC", Mobile = 9175869002, Amount = 426.00 };
        customers[2] = new Customer { Name = "Anil min", City = "Kathmandu", Mobile = 9173694005, Amount = 5896.20 };
        customers[3] = new Customer { Name = "Jim sin", City = "Delhi", Mobile = 64214556002, Amount = 596.20 };
    }

    public int Count()
    {
        return customers.Count();
    }
    public Customer this[int index]
    {
        get
        {
            return customers[index];
        }
    }
    public IEnumerator GetEnumerator()
    {
        return customers.GetEnumerator(); // we can do this but we are going to make our own Enumerator
        return new CustomerEnumerator(this);
    }
}

Now we are going to create our own custom Enumerator as follow. So, we have to implement method MoveNext.

 public class CustomerEnumerator : IEnumerator
    {
        CustomerList coll;
        Customer CurrentCustomer;
        int currentIndex;
        public CustomerEnumerator(CustomerList customerList)
        {
            coll = customerList;
            currentIndex = -1;
        }

        public object Current => CurrentCustomer;

        public bool MoveNext()
        {
            if ((currentIndex++) >= coll.Count() - 1)
                return false;
            else
                CurrentCustomer = coll[currentIndex];
            return true;
        }

        public void Reset()
        {
            // we dont have to implement this method.
        }
    }

Now we can use foreach loop over our collection like below;

    class EnumeratorExample
    {
        static void Main(String[] args)
        {

            CustomerList custList = new CustomerList();
            foreach (Customer cust in custList)
            {
                Console.WriteLine("Customer Name:"+cust.Name + " City Name:" + cust.City + " Mobile Number:" + cust.Amount);
            }
            Console.Read();

        }
    }

1114 (HY000): The table is full

This disk is full at /var/www/mysql

How to echo with different colors in the Windows command line

You could use ANSICON to enable ANSI terminal codes in older versions of Windows. There are 32 and 64 bit versions that I have used in Windows XP and Windows 7.

Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.10:test

Sometimes you get similar sounding errors but for reasons that're really not related to the tools - in this case Surefire plugin.

For me I was getting a similar error but the reason was i wasn't pointing to the correct DB url !

Among a lot of verbosity (using mvn -X flag) I saw a timeout message.

One trick I did was to install IntelliJ on the build server (for debugging purpose) and fixing problems through it first and then uninstalling it and making sure everything works on build server as well.

Laravel - check if Ajax request

To check an ajax request you can use if (Request::ajax())

Note: If you are using laravel 5, then in the controller replace

use Illuminate\Http\Request;

with

use Request;

I hope it'll work.

versionCode vs versionName in Android Manifest

I'm going to give you my interpretation of the only documentation I can find on the subject.

"for example to check an upgrade or downgrade relationship." <- You can downgrade an app.

"you should make sure that each successive release of your application uses a greater value. The system does not enforce this behavior" <- The number really should increase, but you can still downgrade an app.

android:versionCode — An integer value that represents the version of the application code, relative to other versions. The value is an integer so that other applications can programmatically evaluate it, for example to check an upgrade or downgrade relationship. You can set the value to any integer you want, however you should make sure that each successive release of your application uses a greater value. The system does not enforce this behavior, but increasing the value with successive releases is normative. Typically, you would release the first version of your application with versionCode set to 1, then monotonically increase the value with each release, regardless whether the release constitutes a major or minor release. This means that the android:versionCode value does not necessarily have a strong resemblance to the application release version that is visible to the user (see android:versionName, below). Applications and publishing services should not display this version value to users.

Mock functions in Go

Considering unit test is the domain of this question, highly recommend you to use monkey. This Package make you to mock test without changing your original source code. Compare to other answer, it's more "non-intrusive".

main

type AA struct {
 //...
}
func (a *AA) OriginalFunc() {
//...
}

mock test

var a *AA

func NewFunc(a *AA) {
 //...
}

monkey.PatchMethod(reflect.TypeOf(a), "OriginalFunc", NewFunc)

Bad side is:

Reminded by Dave.C, This method is unsafe. So don't use it outside of unit test.
Is non-idiomatic Go.

Good side is:

Is non-intrusive. Make you do things without changing the main code. Like Thomas said.
Make you change behavior of package (maybe provided by third party) with least code.

Interface type check with Typescript

same as above where user-defined guards were used but this time with an arrow function predicate

interface A {
  member:string;
}

const check = (p: any): p is A => p.hasOwnProperty('member');

var foo: any = { member: "foobar" };
if (check(foo))
    alert(foo.member);

HTTP Error 404 when running Tomcat from Eclipse

Check the server configuration and folders' routes:

Open servers view (Window -> Open view... -> Others... -> Search for 'servers'.
Right click on server (mine is Tomcat v6.0) -> properties -> Click on 'Swicth Location' (check that location's like /servers...
Double click on the server. This will open a new servers page. In the 'Servers Locations' area, check the 'Use Tomcat Installation (takes control of Tomcat Installation)' option.
Restart your server.
Enjoy!

Export to csv in jQuery

I recently posted a free software library for this: "html5csv.js" -- GitHub

It is intended to help streamline the creation of small simulator apps in Javascript that might need to import or export csv files, manipulate, display, edit the data, perform various mathematical procedures like fitting, etc.

After loading "html5csv.js" the problem of scanning a table and creating a CSV is a one-liner:

CSV.begin('#PrintDiv').download('MyData.csv').go();

Here is a JSFiddle demo of your example with this code.

Internally, for Firefox/Chrome this is a data URL oriented solution, similar to that proposed by @italo, @lepe, and @adeneo (on another question). For IE

The CSV.begin() call sets up the system to read the data into an internal array. That fetch then occurs. Then the .download() generates a data URL link internally and clicks it with a link-clicker. This pushes a file to the end user.

According to caniuse IE10 doesn't support <a download=...>. So for IE my library calls navigator.msSaveBlob() internally, as suggested by @Manu Sharma

preg_match in JavaScript?

Some Googling brought me to this :

_x000D_

function preg_match (regex, str) {
  return (new RegExp(regex).test(str))
}
console.log(preg_match("^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,6}$","test"))
console.log(preg_match("^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,6}$","[email protected]"))

_x000D_

See https://locutus.io for more info.

In Python, how do I convert all of the items in a list to floats?

This would be an other method (without using any loop!):

import numpy as np
list(np.float_(list_name))

Echo a blank (empty) line to the console from a Windows batch file

There is often the tip to use 'echo.'

But that is slow, and it could fail with an error message, as cmd.exe will search first for a file named 'echo' (without extension) and only when the file doesn't exists it outputs an empty line.

You could use echo(. This is approximately 20 times faster, and it works always. The only drawback could be that it looks odd.

More about the different ECHO:/\ variants is at DOS tips: ECHO. FAILS to give text or blank line.

Send email with PHPMailer - embed image in body

I found the answer:

$mail->AddEmbeddedImage('img/2u_cs_mini.jpg', 'logo_2u');

and on the <img> tag put src='cid:logo_2u'

How do you develop Java Servlets using Eclipse?

Alternatively you can use Jetty which is (now) part of the Eclipe Platform (the Help system is running Jetty). Besides Jetty is used by Android, Windows Mobile..

To get started check the Eclipse Wiki or if you prefer a Video And check out this related Post!

Show default value in Spinner in android

Spinner don't support Hint, i recommend you to make a custom spinner adapter.

check this link : https://stackoverflow.com/a/13878692/1725748

Removing whitespace from strings in Java

The most correct answer to the question is:

String mysz2 = mysz.replaceAll("\\s","");

I just adapted this code from the other answers. I'm posting it because besides being exactly what the question requested, it also demonstrates that the result is returned as a new string, the original string is not modified as some of the answers sort of imply.

(Experienced Java developers might say "of course, you can't actually modify a String", but the target audience for this question may well not know this.)

How to convert FormData (HTML5 object) to JSON

FormData method .entries and the for of expression is not supported in IE11 and Safari.

Here is a simplier version to support Safari, Chrome, Firefox and Edge

function formDataToJSON(formElement) {    
    var formData = new FormData(formElement),
        convertedJSON = {};

    formData.forEach(function(value, key) { 
        convertedJSON[key] = value;
    });

    return convertedJSON;
}

Warning: this answer doesn't work in IE11.
FormData doesn't have a forEach method in IE11.
I'm still searching for a final solution to support all major browsers.

What is the HTML unicode character for a "tall" right chevron?

From the description and from the reference to the search box in the Ubuntu site, I gather that you actually want an arrowhead character pointing to the right. There are no Unicode characters designed to be used as arrowheads, but some of them may visually resemble an arrowhead.

In particular, if you draw your idea of the character at Shapecatcher.com, you will find many suggestions, such as “>” RIGHT-POINTING ANGLE BRACKET' (U+232A) and “?” MEDIUM RIGHT-POINTING ANGLE BRACKET ORNAMENT (U+276D).

Such characters generally have limited support in fonts, so you would need to carefully write a longish font-family list or to use a downloadable font. See my Guide to using special characters in HTML.

Especially if the intended use is as a symbol in a search box, as the reference to the Ubuntu page suggests, it is questionable whether you should use a character at all. It’s not really an element of text here; rather, a graphic symbol that accompanies text but isn’t a part of it. So why take all the trouble with using a character (safely), when it isn’t really a character?

SQL to generate a list of numbers from 1 to 100

You could use XMLTABLE:

SELECT rownum
FROM XMLTABLE('1 to 100');

-- alternatively(useful for generating range i.e. 10-20)
SELECT (COLUMN_VALUE).GETNUMBERVAL() AS NUM
FROM XMLTABLE('1 to 100');

DBFiddle Demo

SQL select max(date) and corresponding value

You can use a subquery. The subquery will get the Max(CompletedDate). You then take this value and join on your table again to retrieve the note associate with that date:

select ET1.TrainingID,
  ET1.CompletedDate,
  ET1.Notes
from HR_EmployeeTrainings ET1
inner join
(
  select Max(CompletedDate) CompletedDate, TrainingID
  from HR_EmployeeTrainings
  --where AvantiRecID IS NULL OR AvantiRecID = @avantiRecID
  group by TrainingID
) ET2
  on ET1.TrainingID = ET2.TrainingID
  and ET1.CompletedDate = ET2.CompletedDate
where ET1.AvantiRecID IS NULL OR ET1.AvantiRecID = @avantiRecID

Eclipse executable launcher error: Unable to locate companion shared library

I have seen this in MacOS Sierra. Sometimes unzipping the app leaves extended attributes that seem to prevent the startup. The following command line removes extended attributes and seems to fix the problem:

xattr -c Eclipse.app

It also works for other applications that are built on the eclipse framework.

Python: Find in list

 lstr=[1, 2, 3]
 lstr=map(str,lstr)
 r=re.compile('^(3){1}')
 results=list(filter(r.match,lstr))
 print(results)

Installation of VB6 on Windows 7 / 8 / 10

VB6 Installs just fine on Windows 7 (and Windows 8 / Windows 10) with a few caveats.

Here is how to install it:

Before proceeding with the installation process below, create a zero-byte file in C:\Windows called MSJAVA.DLL. The setup process will look for this file, and if it doesn't find it, will force an installation of old, old Java, and require a reboot. By creating the zero-byte file, the installation of moldy Java is bypassed, and no reboot will be required.
Turn off UAC.
Insert Visual Studio 6 CD.
Exit from the Autorun setup.
Browse to the root folder of the VS6 CD.
Right-click SETUP.EXE, select Run As Administrator.
On this and other Program Compatibility Assistant warnings, click Run Program.
Click Next.
Click "I accept agreement", then Next.
Enter name and company information, click Next.
Select Custom Setup, click Next.
Click Continue, then Ok.
Setup will "think to itself" for about 2 minutes. Processing can be verified by starting Task Manager, and checking the CPU usage of ACMSETUP.EXE.
On the options list, select the following:
- Microsoft Visual Basic 6.0
- ActiveX
- Data Access
- Graphics
- All other options should be unchecked.
Click Continue, setup will continue.
Finally, a successful completion dialog will appear, at which click Ok. At this point, Visual Basic 6 is installed.
If you do not have the MSDN CD, clear the checkbox on the next dialog, and click next. You'll be warned of the lack of MSDN, but just click Yes to accept.
Click Next to skip the installation of Installshield. This is a really old version you don't want anyway.
Click Next again to skip the installation of BackOffice, VSS, and SNA Server. Not needed!
On the next dialog, clear the checkbox for "Register Now", and click Finish.
The wizard will exit, and you're done. You can find VB6 under Start, All Programs, Microsoft Visual Studio 6. Enjoy!
Turn On UAC again

You might notice after successfully installing VB6 on Windows 7 that working in the IDE is a bit, well, sluggish. For example, resizing objects on a form is a real pain.
After installing VB6, you'll want to change the compatibility settings for the IDE executable.
Using Windows Explorer, browse the location where you installed VB6. By default, the path is C:\Program Files\Microsoft Visual Studio\VB98\
Right click the VB6.exe program file, and select properties from the context menu.
Click on the Compatibility tab.
Place a check in each of these checkboxes:
Run this program in compatibility mode for Windows XP (Service Pack 3)
- Disable Visual Themes
- Disable Desktop Composition
- Disable display scaling on high DPI settings
- If you have UAC turned on, it is probably advisable to check the 'Run this program as an Administrator' box

After changing these settings, fire up the IDE, and things should be back to normal, and the IDE is no longer sluggish.

Edit: Updated dead link to point to a different page with the same instructions

Edit: Updated the answer with the actual instructions in the post as the link kept dying

R solve:system is exactly singular

I guess your code uses somewhere in the second case a singular matrix (i.e. not invertible), and the solve function needs to invert it. This has nothing to do with the size but with the fact that some of your vectors are (probably) colinear.

How do I make a fixed size formatted string in python?

Sure, use the .format method. E.g.,

print('{:10s} {:3d}  {:7.2f}'.format('xxx', 123, 98))
print('{:10s} {:3d}  {:7.2f}'.format('yyyy', 3, 1.0))
print('{:10s} {:3d}  {:7.2f}'.format('zz', 42, 123.34))

will print

xxx        123    98.00
yyyy         3     1.00
zz          42   123.34

You can adjust the field sizes as desired. Note that .format works independently of print to format a string. I just used print to display the strings. Brief explanation:

10s format a string with 10 spaces, left justified by default

3d format an integer reserving 3 spaces, right justified by default

7.2f format a float, reserving 7 spaces, 2 after the decimal point, right justfied by default.

There are many additional options to position/format strings (padding, left/right justify etc), String Formatting Operations will provide more information.

Update for f-string mode. E.g.,

text, number, other_number = 'xxx', 123, 98
print(f'{text:10} {number:3d}  {other_number:7.2f}')

For right alignment

print(f'{text:>10} {number:3d}  {other_number:7.2f}')

Moving uncommitted changes to a new branch

Just create a new branch:

git checkout -b newBranch

And if you do git status you'll see that the state of the code hasn't changed and you can commit it to the new branch.

Pass in an array of Deferreds to $.when()

If you're using angularJS or some variant of the Q promise library, then you have a .all() method that solves this exact problem.

var savePromises = [];
angular.forEach(models, function(model){
  savePromises.push(
    model.saveToServer()
  )
});

$q.all(savePromises).then(
  function success(results){...},
  function failed(results){...}
);

see the full API:

https://github.com/kriskowal/q/wiki/API-Reference#promiseall

https://docs.angularjs.org/api/ng/service/$q

How to install JDK 11 under Ubuntu?

Now it is possible to install openjdk-11 this way:

sudo apt-get install openjdk-11-jdk

(Previously it installed openjdk-10, but not anymore)

How do I specify local .gem files in my Gemfile?

Seems bundler can't use .gem files out of the box. Pointing the :path to a directory containing .gem files doesn't work. Some people suggested to setup a local gem server (geminabox, stickler) for that purpose.

However, what I found to be much simpler is to use a local gem "server" from file system: Just put your .gem files in a local directory, then use "gem generate_index" to make it a Gem repository

mkdir repo
mkdir repo/gems
cp *.gem repo/gems
cd repo
gem generate_index

Finally point bundler to this location by adding the following line to your Gemfile

source "file://path/to/repo"

If you update the gems in the repository, make sure to regenerate the index.

Java: Multiple class declarations in one file

You can have as many classes as you wish like this

public class Fun {
    Fun() {
        System.out.println("Fun constructor");
    }
    void fun() {
        System.out.println("Fun mathod");
    }
    public static void main(String[] args) {
        Fun fu = new Fun();
        fu.fun();
        Fen fe = new Fen();
        fe.fen();
        Fin fi = new Fin();
        fi.fin();
        Fon fo = new Fon();
        fo.fon();
        Fan fa = new Fan();
        fa.fan();
        fa.run();
    }
}

class Fen {
    Fen() {
        System.out.println("fen construuctor");

    }
    void fen() {
        System.out.println("Fen method");
    }
}

class Fin {
    void fin() {
        System.out.println("Fin method");
    }
}

class Fon {
    void fon() {
        System.out.println("Fon method");
    } 
}

class Fan {
    void fan() {
        System.out.println("Fan method");
    }
    public void run() {
        System.out.println("run");
    }
}

One or more types required to compile a dynamic expression cannot be found. Are you missing references to Microsoft.CSharp.dll and System.Core.dll?

None of these worked for me.

My class libraries were definitely all referencing both System.Core and Microsoft.CSharp. Web Application was 4.0 and couldn't upgrade to 4.5 due to support issues.

I was encountering the error compiling a razor template using the Razor Engine, and only encountering it intermittently, like after web application has been restarted.

The solution that worked for me was manually loading the assembly then reattempting the same operation...

        bool retry = true;
        while (retry)
        {
            try
            {
                string textTemplate = File.ReadAllText(templatePath);
                Razor.CompileWithAnonymous(textTemplate, templateFileName);
                retry = false;
            }
            catch (TemplateCompilationException ex)
            {
                LogTemplateException(templatePath, ex);
                retry = false;

                if (ex.Errors.Any(e  => e.ErrorNumber == "CS1969"))
                {
                    try
                    {
                        _logger.InfoFormat("Attempting to manually load the Microsoft.CSharp.RuntimeBinder.Binder");
                        Assembly csharp = Assembly.Load("Microsoft.CSharp, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a");
                        Type type = csharp.GetType("Microsoft.CSharp.RuntimeBinder.Binder");
                        retry = true;
                    }
                    catch(Exception exLoad)
                    {
                        _logger.Error("Failed to manually load runtime binder", exLoad);
                    }
                }

                if (!retry)
                    throw;
            }
        }

Hopefully this might help someone else out there.

How to prepare a Unity project for git?

On the Unity Editor open your project and:

Enable External option in Unity ? Preferences ? Packages ? Repository (only if Unity ver < 4.5)
Switch to Visible Meta Files in Edit ? Project Settings ? Editor ? Version Control Mode
Switch to Force Text in Edit ? Project Settings ? Editor ? Asset Serialization Mode
Save Scene and Project from File menu.
Quit Unity and then you can delete the Library and Temp directory in the project directory. You can delete everything but keep the Assets and ProjectSettings directory.

If you already created your empty git repo on-line (eg. github.com) now it's time to upload your code. Open a command prompt and follow the next steps:

cd to/your/unity/project/folder

git init

git add *

git commit -m "First commit"

git remote add origin [email protected]:username/project.git

git push -u origin master

You should now open your Unity project while holding down the Option or the Left Alt key. This will force Unity to recreate the Library directory (this step might not be necessary since I've seen Unity recreating the Library directory even if you don't hold down any key).

Finally have git ignore the Library and Temp directories so that they won’t be pushed to the server. Add them to the .gitignore file and push the ignore to the server. Remember that you'll only commit the Assets and ProjectSettings directories.

And here's my own .gitignore recipe for my Unity projects:

# =============== #
# Unity generated #
# =============== #
Temp/
Obj/
UnityGenerated/
Library/
Assets/AssetStoreTools*

# ===================================== #
# Visual Studio / MonoDevelop generated #
# ===================================== #
ExportedObj/
*.svd
*.userprefs
*.csproj
*.pidb
*.suo
*.sln
*.user
*.unityproj
*.booproj

# ============ #
# OS generated #
# ============ #
.DS_Store
.DS_Store?
._*
.Spotlight-V100
.Trashes
Icon?
ehthumbs.db
Thumbs.db

Setting up maven dependency for SQL Server

Answer for the "new" and "cool" Microsoft.

Yay, SQL Server driver now under MIT license on

GitHub: https://github.com/Microsoft/mssql-jdbc
Maven Central: http://search.maven.org/#search%7Cga%7C1%7Cmssql-jdbc

<dependency>
    <groupId>com.microsoft.sqlserver</groupId>
    <artifactId>mssql-jdbc</artifactId>
    <version>6.1.0.jre8</version>
</dependency>

Answer for the "old" Microsoft:

For my use-case (integration testing) it was sufficient to use a system scope for the JDBC driver's dependency as such:

<dependency>
    <groupId>com.microsoft.sqlserver</groupId>
    <artifactId>sqljdbc4</artifactId>
    <version>3.0</version>
    <scope>system</scope>
    <systemPath>${basedir}/lib/sqljdbc4.jar</systemPath>
    <optional>true</optional>
</dependency>

That way, I could put the JDBC driver into local version control. No need to have each developer manually set stuff up in their own repositories.

I took inspiration from this answer to another Stack Overflow question and I've also blogged about it here.

How to prevent vim from creating (and leaving) temporary files?

I made a plugin called "noswapsuck" that only enables the swapfile when the buffer contains unsaved changes. Once changes have been saved, the swapfile is cleared. Hence, swapfiles which contain the same content as the file on disk will be removed.

Get it here: noswapsuck.vim

It has been working well for me, but I have never publicised it before, so I would welcome feedback.

Advantages:

The only swapfiles that remain on your disk will be important swapfiles that actually differ from the file!

Disadvantages:

If the buffer has a swapfile, it will not be detected when the file is first opened. It will only be detected when swapfile is enabled, which is when you start to edit the buffer. That is annoyingly late, and will interrupt you. (Solved: We now check for a pre-existing swapfile when a buffer is opened, by temporarily turning the swapfile option on again.)
If you are working in an environment where you want to minimise disk-writes (e.g. low power, or files mounted over a network, or editing a huge file) then it is not ideal to keep removing and re-creating the swap file on every save and edit. In such situations, you can do:
```
:let g:NoSwapSuck_CloseSwapfileOnWrite = 0
```
which will keep the swapfile after a write, but will still remove it when the buffer loses focus.

By the way, I have another little plugin :DiffAgainstFileOnDisk which can be pretty useful after hitting (r)ecover, to check if the buffer you recovered is newer or older than the existing file, or identical to it.

Fastest way to remove non-numeric characters from a VARCHAR in SQL Server

In case you didn't want to create a function, or you needed just a single inline call in T-SQL, you could try:

set @Phone = REPLACE(REPLACE(REPLACE(REPLACE(@Phone,'(',''),' ',''),'-',''),')','')

Of course this is specific to removing phone number formatting, not a generic remove all special characters from string function.

Is there a way to retrieve the view definition from a SQL Server using plain ADO?

SELECT object_definition (OBJECT_ID(N'dbo.vEmployee'))

How to make the checkbox unchecked by default always

An easy way , only HTML, no javascript, no jQuery

<input name="box1" type="hidden"   value="0" />
<input name="box1" type="checkbox" value="1" />

Set Label Text with JQuery

I would just query for the for attribute instead of repetitively recursing the DOM tree.

$("input:checkbox").on("change", function() {
    $("label[for='"+this.id+"']").text("TESTTTT");
});

Is it possible to make an HTML anchor tag not clickable/linkable using CSS?

That isn't too easy to do with CSS, as it's not a behavioral language (ie JavaScript), the only easy way would be to use a JavaScript OnClick Event on your anchor and to return it as false, this is probably the shortest code you could use for that:

<a href="page.html" onclick="return false">page link</a>

Converting JavaScript object with numeric keys into array

_x000D_

var JsonObj = {_x000D_
  "0": "1",_x000D_
  "1": "2",_x000D_
  "2": "3",_x000D_
  "3": "4"_x000D_
};_x000D_
_x000D_
var array = [];_x000D_
for (var i in JsonObj) {_x000D_
  if (JsonObj.hasOwnProperty(i) && !isNaN(+i)) {_x000D_
    array[+i] = JsonObj[i];_x000D_
  }_x000D_
}_x000D_
_x000D_
console.log(array)

_x000D_

DEMO

Error importing SQL dump into MySQL: Unknown database / Can't create database

If you create your database in direct admin or cpanel, you must edit your sql with notepad or notepad++ and change CREATE DATABASE command to CREATE DATABASE IF NOT EXISTS in line22

Get Application Directory

I got this

String appPath = App.getApp().getApplicationContext().getFilesDir().getAbsolutePath();

from here:

Twitter Bootstrap add active class to li

None of these worked for me. My Bootstrap setup navigates to separate pages (so I can't do it on a click action, but the active class is removed on the navigation to a new page), and my urls don't match exactly. So here's what I did, based on my exception-based situation. Hope it helps others:

//Adding the active class to Twitter bootstrap navs, with a few alternate approaches

$(document).ready(function() {
  var rawhref = window.location.href; //raw current url 
  var newpage = ((window.location.href.match(/([^\/]*)\/?$/)[1]).substring(1)); //take only the last part of the url, and chop off the first char (substring), since the contains method below is case-sensitive. Don't need to do this if they match exactly.
  if (newpage == 'someNonMatchingURL') {  //deal with an exception literally
    newpage = 'matchingNavbarText'
    }
  if (rawhref.indexOf('somePartofURL') != -1) { //look for a consistent part of the path in the raw url to deal with variable urls, etc.
    newpage = "moreMatchingNavbarText"
    }
  $(".nav li a:contains('" + newpage + "')").parent().addClass('active'); //add the active class. Note that the contains method requires the goofy quote syntax to insert a variable.

});

What is a Python equivalent of PHP's var_dump()?

print

For your own classes, just def a __str__ method

how to set value of a input hidden field through javascript?

The first thing I will try - determine if your code with alerts is actually rendered. I see some server "if" code in what you posted, so may be condition to render javascript is not satisfied. So, on the page you working on, right-click -> view source. Try to find the js code there. Please tell us if you found the code on the page.

Is it possible to simulate key press events programmatically?

You can create and dispatch keyboard events, and they will trigger appropriate registered event handlers, however they will not produce any text, if dispatched to input element for example.

To fully simulate text input you need to produce a sequence of keyboard events plus explicitly set the text of input element. The sequence of events depends on how thoroughly you want to simulate text input.

The simplest form would be:

$('input').val('123');
$('input').change();

Pointer to 2D arrays in C

Both your examples are equivalent. However, the first one is less obvious and more "hacky", while the second one clearly states your intention.

int (*pointer)[280];
pointer = tab1;

pointer points to an 1D array of 280 integers. In your assignment, you actually assign the first row of tab1. This works since you can implicitly cast arrays to pointers (to the first element).

When you are using pointer[5][12], C treats pointer as an array of arrays (pointer[5] is of type int[280]), so there is another implicit cast here (at least semantically).

In your second example, you explicitly create a pointer to a 2D array:

int (*pointer)[100][280];
pointer = &tab1;

The semantics are clearer here: *pointer is a 2D array, so you need to access it using (*pointer)[i][j].

Both solutions use the same amount of memory (1 pointer) and will most likely run equally fast. Under the hood, both pointers will even point to the same memory location (the first element of the tab1 array), and it is possible that your compiler will even generate the same code.

The first solution is "more advanced" since one needs quite a deep understanding on how arrays and pointers work in C to understand what is going on. The second one is more explicit.

Flask Value error view function did not return a response

You are not returning a response object from your view my_form_post. The function ends with implicit return None, which Flask does not like.

Make the function my_form_post return an explicit response, for example

return 'OK'

at the end of the function.

I just discovered why all ASP.Net websites are slow, and I am trying to work out what to do about it

For ASPNET MVC, we did the following:

By default, set SessionStateBehavior.ReadOnly on all controller's action by overriding DefaultControllerFactory
On controller actions that need writing to session state, mark with attribute to set it to SessionStateBehavior.Required

Create custom ControllerFactory and override GetControllerSessionBehavior.

    protected override SessionStateBehavior GetControllerSessionBehavior(RequestContext requestContext, Type controllerType)
    {
        var DefaultSessionStateBehaviour = SessionStateBehaviour.ReadOnly;

        if (controllerType == null)
            return DefaultSessionStateBehaviour;

        var isRequireSessionWrite =
            controllerType.GetCustomAttributes<AcquireSessionLock>(inherit: true).FirstOrDefault() != null;

        if (isRequireSessionWrite)
            return SessionStateBehavior.Required;

        var actionName = requestContext.RouteData.Values["action"].ToString();
        MethodInfo actionMethodInfo;

        try
        {
            actionMethodInfo = controllerType.GetMethod(actionName, BindingFlags.IgnoreCase | BindingFlags.Public | BindingFlags.Instance);
        }
        catch (AmbiguousMatchException)
        {
            var httpRequestTypeAttr = GetHttpRequestTypeAttr(requestContext.HttpContext.Request.HttpMethod);

            actionMethodInfo =
                controllerType.GetMethods().FirstOrDefault(
                    mi => mi.Name.Equals(actionName, StringComparison.CurrentCultureIgnoreCase) && mi.GetCustomAttributes(httpRequestTypeAttr, false).Length > 0);
        }

        if (actionMethodInfo == null)
            return DefaultSessionStateBehaviour;

        isRequireSessionWrite = actionMethodInfo.GetCustomAttributes<AcquireSessionLock>(inherit: false).FirstOrDefault() != null;

         return isRequireSessionWrite ? SessionStateBehavior.Required : DefaultSessionStateBehaviour;
    }

    private static Type GetHttpRequestTypeAttr(string httpMethod) 
    {
        switch (httpMethod)
        {
            case "GET":
                return typeof(HttpGetAttribute);
            case "POST":
                return typeof(HttpPostAttribute);
            case "PUT":
                return typeof(HttpPutAttribute);
            case "DELETE":
                return typeof(HttpDeleteAttribute);
            case "HEAD":
                return typeof(HttpHeadAttribute);
            case "PATCH":
                return typeof(HttpPatchAttribute);
            case "OPTIONS":
                return typeof(HttpOptionsAttribute);
        }

        throw new NotSupportedException("unable to determine http method");
    }

AcquireSessionLockAttribute

[AttributeUsage(AttributeTargets.Method)]
public sealed class AcquireSessionLock : Attribute
{ }

Hook up the created controller factory in global.asax.cs

ControllerBuilder.Current.SetControllerFactory(typeof(DefaultReadOnlySessionStateControllerFactory));

Now, we can have both read-only and read-write session state in a single Controller.

public class TestController : Controller 
{
    [AcquireSessionLock]
    public ActionResult WriteSession()
    {
        var timeNow = DateTimeOffset.UtcNow.ToString();
        Session["key"] = timeNow;
        return Json(timeNow, JsonRequestBehavior.AllowGet);
    }

    public ActionResult ReadSession()
    {
        var timeNow = Session["key"];
        return Json(timeNow ?? "empty", JsonRequestBehavior.AllowGet);
    }
}

Note: ASPNET session state can still be written to even in readonly mode and will not throw any form of exception (It just doesn't lock to guarantee consistency) so we have to be careful to mark AcquireSessionLock in controller's actions that require writing session state.

How can I remove all text after a character in bash?

In Bash (and ksh, zsh, dash, etc.), you can use parameter expansion with % which will remove characters from the end of the string or # which will remove characters from the beginning of the string. If you use a single one of those characters, the smallest matching string will be removed. If you double the character, the longest will be removed.

$ a='hello:world'

$ b=${a%:*}
$ echo "$b"
hello

$ a='hello:world:of:tomorrow'

$ echo "${a%:*}"
hello:world:of

$ echo "${a%%:*}"
hello

$ echo "${a#*:}"
world:of:tomorrow

$ echo "${a##*:}"
tomorrow

How to make fixed header table inside scrollable div?

Using position: sticky on th will do the trick.

Note: if you use position: sticky on thead or tr, it won't work.

https://jsfiddle.net/hrg3tmxj/

Search in lists of lists by given index

Given below is a simple way to find exactly where in the list the item is.

for i in range (0,len(a)):
sublist=a[i]
for i in range(0,len(sublist)):
    if search==sublist[i]:
        print "found in sublist "+ "a"+str(i)

Pass a password to ssh in pure bash

You can not specify the password from the command line but you can do either using ssh keys or using sshpass as suggested by John C. or using a expect script.

To use sshpass, you need to install it first. Then

sshpass -f <(printf '%s\n' your_password) ssh user@hostname

instead of using sshpass -p your_password. As mentioned by Charles Duffy in the comments, it is safer to supply the password from a file or from a variable instead of from command line.

BTW, a little explanation for the <(command) syntax. The shell executes the command inside the parentheses and replaces the whole thing with a file descriptor, which is connected to the command's stdout. You can find more from this answer https://unix.stackexchange.com/questions/156084/why-does-process-substitution-result-in-a-file-called-dev-fd-63-which-is-a-pipe

Remove a prefix from a string

Short and sweet:

def remove_prefix(text, prefix):
    return text[text.startswith(prefix) and len(prefix):]

Find files in created between a date range

If you use GNU find, since version 4.3.3 you can do:

find -newerct "1 Aug 2013" ! -newerct "1 Sep 2013" -ls

It will accept any date string accepted by GNU date -d.

You can change the c in -newerct to any of a, B, c, or m for looking at atime/birth/ctime/mtime.

Another example - list files modified between 17:30 and 22:00 on Nov 6 2017:

find -newermt "2017-11-06 17:30:00" ! -newermt "2017-11-06 22:00:00" -ls

Full details from man find:

   -newerXY reference
          Compares the timestamp of the current file with reference.  The reference argument is normally the name of a file (and one of its timestamps  is  used
          for  the  comparison)  but  it may also be a string describing an absolute time.  X and Y are placeholders for other letters, and these letters select
          which time belonging to how reference is used for the comparison.

          a   The access time of the file reference
          B   The birth time of the file reference
          c   The inode status change time of reference
          m   The modification time of the file reference
          t   reference is interpreted directly as a time

          Some combinations are invalid; for example, it is invalid for X to be t.  Some combinations are not implemented on all systems; for example B  is  not
          supported on all systems.  If an invalid or unsupported combination of XY is specified, a fatal error results.  Time specifications are interpreted as
          for the argument to the -d option of GNU date.  If you try to use the birth time of a reference file, and the birth time cannot be determined, a fatal
          error  message  results.   If  you  specify a test which refers to the birth time of files being examined, this test will fail for any files where the
          birth time is unknown.

event.returnValue is deprecated. Please use the standard event.preventDefault() instead

If you using Bootstrap:

The current version of Bootstrap (3.0.2) (with jQuery 1.10.2 & Chrome) seems to generate this warning as well.

(It does so on Twitter too, BTW.)

Update

The current version of Bootstrap (3.1.0) no longer seems to generate this warning.

login to remote using "mstsc /admin" with password

Save your username, password and sever name in an RDP file and run the RDP file from your script

Angular : Manual redirect to route

Angular Redirection manually: Import @angular/router, Inject in constructor() then call this.router.navigate().

import {Router} from '@angular/router';
... 
...

constructor(private router: Router) {
  ...
}

onSubmit() {
  ...
  this.router.navigate(['/profile']); 
}

How to get current time in milliseconds in PHP?

PHP 5.2.2 <

$d = new DateTime();
echo $d->format("Y-m-d H:i:s.u"); // u : Microseconds

PHP 7.0.0 < 7.1

$d = new DateTime();
echo $d->format("Y-m-d H:i:s.v"); // v : Milliseconds

need to test if sql query was successful

This is the simplest way you could test

$query = $DB->query("UPDATE exp_members SET group_id = '$group_id' WHERE member_id = '$member_id'");

if($query) // will return true if succefull else it will return false
{
// code here
}

Cannot connect to MySQL Workbench on mac. Can't connect to MySQL server on '127.0.0.1' (61) Mac Macintosh

This steps are all in the terminal:)->source

Step make sure your server is running:

sudo /usr/local/mysql/support-files/mysql.server start

Check MySQL version. "This also puts you in to a shell interactive dialogue with mySQL, type q to exit."

/usr/local/mysql/bin/mysql -v

Make your life easier: "After installation, in order to use mysql commands without typing the full path to the commands you need to add the mysql directory to your shell path, (optional step) this is done in your “.bash_profile” file in your home directory, if you don’t have that file just create it using vi or nano:"

cd ; nano .bash_profile

paste in and save:

export PATH="/usr/local/mysql/bin:$PATH"

"The first command brings you to your home directory and opens the .bash_profile file or creates a new one if it doesn’t exist, then add in the line above which adds the mysql binary path to commands that you can run. Exit the file with type “control + x” and when prompted save the change by typing “y”. Last thing to do here is to reload the shell for the above to work straight away."

source ~/.bash_profile mysql -v

"You will get the version number again, just type “q” to exit."

Check out on which port the server is running:

in your terminal type in: mysql

and then

SHOW GLOBAL VARIABLES LIKE 'PORT';

use everytime a semikolon in the mysql client (shell)!

now you know your port and where you can configure your server(in the terminal with mysql shell/client). but for a successful connection with MySQL Benchmark or an other client you have to know more. username, passwort hostname and port. after the installation the root user has no passwort so set(howtoSetPW) the passwort in terminal with mysql shell/client. and the server is running local. so type in root, yourPW, localhost and 3007. have fun!

Setting focus on an HTML input box on page load

You could also use:

<body onload="focusOnInput()">
    <form name="passwordForm" action="verify.php" method="post">
        <input name="passwordInput" type="password" />
    </form>
</body>

And then in your JavaScript:

function focusOnInput() {
    document.forms["passwordForm"]["passwordInput"].focus();
}

How to send a PUT/DELETE request in jQuery?

If you need to make a $.post work to a Laravel Route::delete or Route::put just add an argument "_method"="delete" or "_method"="put".

$.post("your/uri/here", {"arg1":"value1",...,"_method":"delete"}, function(data){}); ...

Must works for others Frameworks

Note: Tested with Laravel 5.6 and jQuery 3

FirstOrDefault: Default value other than null

As I understand it, in Linq the method FirstOrDefault() can return a Default value of something other than null.

No. Or rather, it always returns the default value for the element type... which is either a null reference, the null value of a nullable value type, or the natural "all zeroes" value for a non-nullable value type.

Is there any particular way that this can be set up so that if there is no value for a particular query some predefined value is returned as the default value?

For reference types, you can just use:

var result = query.FirstOrDefault() ?? otherDefaultValue;

Of course this will also give you the "other default value" if the first value is present, but is a null reference...

How does cellForRowAtIndexPath work?

Basically it's designing your cell, The cellforrowatindexpath is called for each cell and the cell number is found by indexpath.row and section number by indexpath.section . Here you can use a label, button or textfied image anything that you want which are updated for all rows in the table. Answer for second question In cell for row at index path use an if statement

In Objective C

-(UITableViewCell *)tableView:(UITableView *)tableView  cellForRowAtIndexPath:(NSIndexPath *)indexPath
{

 NSString *CellIdentifier = @"CellIdentifier";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

  if(tableView == firstTableView)
  {
      //code for first table view 
      [cell.contentView addSubview: someView];
  }

  if(tableview == secondTableView)
  {
      //code for secondTableView 
      [cell.contentView addSubview: someView];
  }
  return cell;
}

In Swift 3.0

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell 
{
  let cell:UITableViewCell = self.tableView.dequeueReusableCell(withIdentifier: cellReuseIdentifier) as UITableViewCell!

  if(tableView == firstTableView)   {
     //code for first table view 
  }

  if(tableview == secondTableView)      {
     //code for secondTableView 
  }

  return cell
}

How do I prevent DIV tag starting a new line?

Use css property - white-space: nowrap;

How to sort an array of associative arrays by value of a given key in PHP?

While others have correctly suggested the use of array_multisort(), for some reason no answer seems to acknowledge the existence of array_column(), which can greatly simplify the solution. So my suggestion would be:

array_multisort(array_column($inventory, 'price'), SORT_DESC, $inventory);

How can one check to see if a remote file exists using PHP?

You should issue HEAD requests, not GET one, because you don't need the URI contents at all. As Pies said above, you should check for status code (in 200-299 ranges, and you may optionally follow 3xx redirects).

The answers question contain a lot of code examples which may be helpful: PHP / Curl: HEAD Request takes a long time on some sites

How do I rename all folders and files to lowercase on Linux?

I would reach for Python in this situation, to avoid optimistically assuming paths without spaces or slashes. I've also found that python2 tends to be installed in more places than rename.

#!/usr/bin/env python2
import sys, os

def rename_dir(directory):
  print('DEBUG: rename('+directory+')')

  # Rename current directory if needed
  os.rename(directory, directory.lower())
  directory = directory.lower()

  # Rename children
  for fn in os.listdir(directory):
    path = os.path.join(directory, fn)
    os.rename(path, path.lower())
    path = path.lower()

    # Rename children within, if this child is a directory
    if os.path.isdir(path):
        rename_dir(path)

# Run program, using the first argument passed to this Python script as the name of the folder
rename_dir(sys.argv[1])

How to insert a text at the beginning of a file?

If the file is only one line, you can use:

sed 's/^/insert this /' oldfile > newfile

If it's more than one line. one of:

sed '1s/^/insert this /' oldfile > newfile
sed '1,1s/^/insert this /' oldfile > newfile

I've included the latter so that you know how to do ranges of lines. Both of these "replace" the start line marker on their affected lines with the text you want to insert. You can also (assuming your sed is modern enough) use:

sed -i 'whatever command you choose' filename

to do in-place editing.

printf and long double

As has been said in other answers, the correct conversion specifier is "%Lf".

You might want to turn on the format warning by using -Wformat (or -Wall, which includes -Wformat) in the gcc invocation

$ gcc source.c
$ gcc -Wall source.c
source.c: In function `main`:
source.c:5: warning: format "%lf" expects type `double`, but argument 2 has type `long double`
source.c:5: warning: format "%le" expects type `double`, but argument 3 has type `long double`
$

preg_match(); - Unknown modifier '+'

Try this code:

preg_match('/[a-zA-Z]+<\/a>.$/', $lastgame, $match);
print_r($match);

Using / as a delimiter means you also need to escape it here, like so: <\/a>.

UPDATE

preg_match('/<a.*<a.*>(.*)</', $lastgame, $match);
echo'['.$match[1].']';

Might not be the best way...

Best way to simulate "group by" from bash?

I understand you are looking for something in Bash, but in case someone else might be looking for something in Python, you might want to consider this:

mySet = set()
for line in open("ip_address_file.txt"):
     line = line.rstrip()
     mySet.add(line)

As values in the set are unique by default and Python is pretty good at this stuff, you might win something here. I haven't tested the code, so it might be bugged, but this might get you there. And if you want to count occurrences, using a dict instead of a set is easy to implement.

Edit: I'm a lousy reader, so I answered wrong. Here's a snippet with a dict that would count occurences.

mydict = {}
for line in open("ip_address_file.txt"):
    line = line.rstrip()
    if line in mydict:
        mydict[line] += 1
    else:
        mydict[line] = 1

The dictionary mydict now holds a list of unique IP's as keys and the amount of times they occurred as their values.

Laravel: Get base url

I used this and it worked for me in Laravel 5.3.18:

<?php echo URL::to('resources/assets/css/yourcssfile.css') ?>

IMPORTANT NOTE: This will only work when you have already removed "public" from your URL. To do this, you may check out this helpful tutorial.

Counting number of lines, words, and characters in a text file

try

    int words = 0;
    int lines = 0;
    int chars = 0;
    while(in.hasNextLine())  {
        lines++;
        String line = in.nextLine();
        chars += line.length();
        words += new StringTokenizer(line, " ,").countTokens();
    }

Error: Could not find or load main class

If you work in Eclipse, just make a cleanup (project\clean.. clean all projects) of the project.

How to Pass Parameters to Activator.CreateInstance<T>()

Keep in mind though that passing arguments on Activator.CreateInstance has a significant performance difference versus parameterless creation.

There are better alternatives for dynamically creating objects using pre compiled lambda. Of course always performance is subjective and it clearly depends on each case if it's worth it or not.

Details about the issue on this article.

Graph is taken from the article and represents time taken in ms per 1000 calls.

How to convert integer to char in C?

A char in C is already a number (the character's ASCII code), no conversion required.

If you want to convert a digit to the corresponding character, you can simply add '0':

c = i +'0';

The '0' is a character in the ASCll table.

UTF-8 encoding in JSP page

Page encoding or anything else do not matter a lot. ISO-8859-1 is a subset of UTF-8, therefore you never have to convert ISO-8859-1 to UTF-8 because ISO-8859-1 is already UTF-8,a subset of UTF-8 but still UTF-8. Plus, all that do not mean a thing if You have a double encoding somewhere. This is my "cure all" recipe for all things encoding and charset related:

        String myString = "heartbroken ð";

//String is double encoded, fix that first.

                myString = new String(myString.getBytes(StandardCharsets.ISO_8859_1), StandardCharsets.UTF_8);
                String cleanedText = StringEscapeUtils.unescapeJava(myString);
                byte[] bytes = cleanedText.getBytes(StandardCharsets.UTF_8);
                String text = new String(bytes, StandardCharsets.UTF_8);
                Charset charset = Charset.forName("UTF-8");
                CharsetDecoder decoder = charset.newDecoder();
                decoder.onMalformedInput(CodingErrorAction.IGNORE);
                decoder.onUnmappableCharacter(CodingErrorAction.IGNORE);
                CharsetEncoder encoder = charset.newEncoder();
                encoder.onMalformedInput(CodingErrorAction.IGNORE);
                encoder.onUnmappableCharacter(CodingErrorAction.IGNORE);
                try {
                    // The new ByteBuffer is ready to be read.
                    ByteBuffer bbuf = encoder.encode(CharBuffer.wrap(text));
                    // The new ByteBuffer is ready to be read.
                    CharBuffer cbuf = decoder.decode(bbuf);
                    String str = cbuf.toString();
                } catch (CharacterCodingException e) {
                    logger.error("Error Message if you want to");

                }

How do I get the last inserted ID of a MySQL table in PHP?

there is a function to know what was the last id inserted in the current connection

mysql_query('INSERT INTO FOO(a) VALUES(\'b\')');
$id = mysql_insert_id();

plus using max is a bad idea because it could lead to problems if your code is used at same time in two different sessions.

That function is called mysql_insert_id

jQuery prevent change for select

if anybody still interested, this solved the problem, using jQuery 3.3.1

jQuery('.class').each(function(i,v){

    jQuery(v).data('lastSelected', jQuery(v).find('option:selected').val());
    jQuery(v).on('change', function(){

    if(!confirm('Are you sure?'))
    {
        var self = jQuery(this);
        jQuery(this).find('option').each(function(key, value){
           if(parseInt(jQuery(value).val()) === parseInt(self.data('lastSelected')))
           {
               jQuery(this).prop('selected', 'selected');
           }
        });
    }
    jQuery(v).data('lastSelected', jQuery(v).find('option:selected').val());    
});

});

List rows after specific date

Simply put:

SELECT * 
FROM TABLE_NAME
WHERE
dob > '1/21/2012'

Where 1/21/2012 is the date and you want all data, including that date.

SELECT * 
FROM TABLE_NAME
WHERE
dob BETWEEN '1/21/2012' AND '2/22/2012'

Use a between if you're selecting time between two dates

How to extract the n-th elements from a list of tuples?

Timings for Python 3.6 for extracting the second element from a 2-tuple list.

Also, added numpy array method, which is simpler to read (but arguably simpler than the list comprehension).

from operator import itemgetter
elements = [(1,1) for _ in range(100000)]

%timeit second = [x[1] for x in elements]
%timeit second = list(map(itemgetter(1), elements))
%timeit second = dict(elements).values()
%timeit second = list(zip(*elements))[1]
%timeit second = np.array(elements)[:,1]

and the timings:

list comprehension:  4.73 ms ± 206 µs per loop
list(map):           5.3 ms ± 167 µs per loop
dict:                2.25 ms ± 103 µs per loop
list(zip)            5.2 ms ± 252 µs per loop
numpy array:        28.7 ms ± 1.88 ms per loop

Note that map() and zip() do not return a list anymore, hence the explicit conversion.

How do I correctly upgrade angular 2 (npm) to the latest version?

If you want to install/upgrade all packages to the latest version and you are running windows you can use this in powershell.exe:

foreach($package in @("animations","common","compiler","core","forms","http","platform-browser","platform-browser-dynamic","router")) {
    npm install @angular/$package@latest -E
}

If you also use the cli, you can do this:

foreach($package in @('animations','common','compiler','core','forms','http','platform-browser','platform-browser-dynamic','router', 'cli','compiler-cli')){
    iex "npm install @angular/$package@latest -E $(If($('cli','compiler-cli').Contains($package)){'-D'})";
}

This will save the packages exact (-E), and the cli packages in devDependencies (-D)

Convert List<DerivedClass> to List<BaseClass>

The way to make this work is to iterate over the list and cast the elements. This can be done using ConvertAll:

List<A> listOfA = new List<C>().ConvertAll(x => (A)x);

You could also use Linq:

List<A> listOfA = new List<C>().Cast<A>().ToList();

TypeError: 'undefined' is not an object

try out this if you want to assign value to object and it is showing this error in angular..

crate object in construtor

this.modelObj = new Model(); //<---------- after declaring object above

Most common C# bitwise operations on enums

The idiom is to use the bitwise or-equal operator to set bits:

flags |= 0x04;

To clear a bit, the idiom is to use bitwise and with negation:

flags &= ~0x04;

Sometimes you have an offset that identifies your bit, and then the idiom is to use these combined with left-shift:

flags |= 1 << offset;
flags &= ~(1 << offset);

Permission is only granted to system app

when your add permission in manifest then in eclipse go to project and clic

click on project
click on clean project that's all

k on clean project

How to define a Sql Server connection string to use in VB.NET?

May it will help for u. U should use (localdb).

LocalDB automatic instance

Server=(localdb)\v11.0;Integrated Security=true;

LocalDB automatic instance with specific data file

Server=(localdb)\v11.0;Integrated Security=true; AttachDbFileName=C:\MyFolder\MyData.mdf;

Cannot deserialize the current JSON object (e.g. {"name":"value"}) into type 'System.Collections.Generic.List`1

Can you try to change your json without data key like below?

[{"target_id":9503123,"target_type":"user"}]

Converting year and month ("yyyy-mm" format) to a date?

Try this. (Here we use text=Lines to keep the example self contained but in reality we would replace it with the file name.)

Lines <- "2009-01  12
2009-02  310
2009-03  2379
2009-04  234
2009-05  14
2009-08  1
2009-09  34
2009-10  2386"

library(zoo)
z <- read.zoo(text = Lines, FUN = as.yearmon)
plot(z)

The X axis is not so pretty with this data but if you have more data in reality it might be ok or you can use the code for a fancy X axis shown in the examples section of ?plot.zoo .

The zoo series, z, that is created above has a "yearmon" time index and looks like this:

> z
Jan 2009 Feb 2009 Mar 2009 Apr 2009 May 2009 Aug 2009 Sep 2009 Oct 2009 
      12      310     2379      234       14        1       34     2386

"yearmon" can be used alone as well:

> as.yearmon("2000-03")
[1] "Mar 2000"

Note:

"yearmon" class objects sort in calendar order.
This will plot the monthly points at equally spaced intervals which is likely what is wanted; however, if it were desired to plot the points at unequally spaced intervals spaced in proportion to the number of days in each month then convert the index of z to "Date" class: time(z) <- as.Date(time(z)) .

Change priorityQueue to max priorityqueue

Here is a sample Max-Heap in Java :

PriorityQueue<Integer> pq1= new PriorityQueue<Integer>(10, new Comparator<Integer>() {
public int compare(Integer x, Integer y) {
if (x < y) return 1;
if (x > y) return -1;
return 0;
}
});
pq1.add(5);
pq1.add(10);
pq1.add(-1);
System.out.println("Peek: "+pq1.peek());

The output will be 10

How do I encrypt and decrypt a string in python?

For Encryption

  def encrypt(my_key=KEY, my_iv=IV, my_plain_text=PLAIN_TEXT): 

       key = binascii.unhexlify('ce975de9294067470d1684442555767fcb007c5a3b89927714e449c3f66cb2a4')
       iv = binascii.unhexlify('9aaecfcf7e82abb8118d8e567d42ee86')

       padder = PKCS7Padder()
       padded_text = padder.encode(my_plain_text)

      encryptor = AES.new(key, AES.MODE_CBC, iv, segment_size=128)  # Initialize encryptor
      result = encryptor.encrypt(padded_text)  

     return {
         "plain": my_plain_text,
         "key": binascii.hexlify(key),
         "iv": binascii.hexlify(iv),
         "ciphertext": result
}

Selenium webdriver click google search

Most of the answers on this page are outdated.
Here's an updated python version to search google and get all results href's:

import urllib.parse
import re
from selenium import webdriver
driver.get("https://google.com/")
q = driver.find_element_by_name('q')
q.send_keys("always look on the bright side of life monty python")
q.submit();
sleep(1)
links= driver.find_elements_by_xpath("//h3[@class='r']//a")
for link in links:
    url = urllib.parse.unquote(webElement.get_attribute("href")) # decode the url
    url = re.sub("^.*?(?:url\?q=)(.*?)&sa.*", r"\1", url, 0, re.IGNORECASE) # get the clean url

Please note that the element id/name/class (@class='r') ** will change depending on the user agent**.
The above code used PhantomJS default user agent.

How do I select a sibling element using jQuery?

$(this).siblings(".bidbutton")

SSL Proxy/Charles and Android trouble

Thanks for @bkurzius's answer and this update is for Charles 3.10+. (The reason is here)

Open Charles
Go to Proxy > SSL Proxy Settings...
Check “Enable SSL Proxying”
Select “Add location” and enter the host name and port (if needed)
Click ok and make sure the option is checked
Go to Help > SSL Proxying > Install Charles Root Certificate on a Mobile Device or Remote Browser..., and just follow the instruction. (use the Android's browser to download and install the certificate.)
In “Name the certificate” enter whatever you want
Click OK and you should get a message that the certificate was installed

Programmatically change the src of an img tag

Give your img tag an id, then you can

document.getElementById("imageid").src="../template/save.png";

Should I mix AngularJS with a PHP framework?

It seems you may be more comfortable with developing in PHP you let this hold you back from utilizing the full potential with web applications.

It is indeed possible to have PHP render partials and whole views, but I would not recommend it.

To fully utilize the possibilities of HTML and javascript to make a web application, that is, a web page that acts more like an application and relies heavily on client side rendering, you should consider letting the client maintain all responsibility of managing state and presentation. This will be easier to maintain, and will be more user friendly.

I would recommend you to get more comfortable thinking in a more API centric approach. Rather than having PHP output a pre-rendered view, and use angular for mere DOM manipulation, you should consider having the PHP backend output the data that should be acted upon RESTFully, and have Angular present it.

Using PHP to render the view:

/user/account

if($loggedIn)
{
    echo "<p>Logged in as ".$user."</p>";
}
else
{
    echo "Please log in.";
}

How the same problem can be solved with an API centric approach by outputting JSON like this:

api/auth/

{
  authorized:true,
  user: {
      username: 'Joe', 
      securityToken: 'secret'
  }
}

and in Angular you could do a get, and handle the response client side.

$http.post("http://example.com/api/auth", {})
.success(function(data) {
    $scope.isLoggedIn = data.authorized;
});

To blend both client side and server side the way you proposed may be fit for smaller projects where maintainance is not important and you are the single author, but I lean more towards the API centric way as this will be more correct separation of conserns and will be easier to maintain.

How do you render primitives as wireframes in OpenGL?

The easiest way is to draw the primitives as GL_LINE_STRIP.

glBegin(GL_LINE_STRIP);
/* Draw vertices here */
glEnd();

Access cell value of datatable

If you need a weak reference to the cell value:

object field = d.Rows[0][3]

object field = d.Rows[0].ItemArray[3]

Should do it

If you need a strongly typed reference (string in your case) you can use the DataRowExtensions.Field extension method:

string field = d.Rows[0].Field<string>(3);

(make sure System.Data is in listed in the namespaces in this case)

Indexes are 0 based so we first access the first row (0) and then the 4th column in this row (3)

C# : 'is' keyword and checking for Not

The way you have it is fine but you could create a set of extension methods to make "a more elegant way to check for the 'NOT' instance."

public static bool Is<T>(this object myObject)
{
    return (myObject is T);
}

public static bool IsNot<T>(this object myObject)
{
    return !(myObject is T);
}

Then you could write:

if (child.IsNot<IContainer>())
{
    // child is not an IContainer
}

How to retrieve absolute path given relative

I think this is the most portable:

abspath() {                                               
    cd "$(dirname "$1")"
    printf "%s/%s\n" "$(pwd)" "$(basename "$1")"
    cd "$OLDPWD"
}

It will fail if the path does not exist though.

How do you declare string constants in C?

If you want a "const string" like your question says, I would really go for the version you stated in your question:

/* first version */
const char *HELLO2 = "Howdy";

Particularly, I would avoid:

/* second version */
const char HELLO2[] = "Howdy";

Reason: The problem with second version is that compiler will make a copy of the entire string "Howdy", PLUS that string is modifiable (so not really const).

On the other hand, first version is a const string accessible by const pointer HELLO2, and there is no way anybody can modify it.

How should I copy Strings in Java?

Strings are immutable objects so you can copy them just coping the reference to them, because the object referenced can't change ...

So you can copy as in your first example without any problem :

String s = "hello";
String backup_of_s = s;
s = "bye";

Is there a regular expression to detect a valid regular expression?

Though it is perfectly possible to use a recursive regex as MizardX has posted, for this kind of things it is much more useful a parser. Regexes were originally intended to be used with regular languages, being recursive or having balancing groups is just a patch.

The language that defines valid regexes is actually a context free grammar, and you should use an appropriate parser for handling it. Here is an example for a university project for parsing simple regexes (without most constructs). It uses JavaCC. And yes, comments are in Spanish, though method names are pretty self-explanatory.

SKIP :
{
    " "
|   "\r"
|   "\t"
|   "\n"
}
TOKEN : 
{
    < DIGITO: ["0" - "9"] >
|   < MAYUSCULA: ["A" - "Z"] >
|   < MINUSCULA: ["a" - "z"] >
|   < LAMBDA: "LAMBDA" >
|   < VACIO: "VACIO" >
}

IRegularExpression Expression() :
{
    IRegularExpression r; 
}
{
    r=Alternation() { return r; }
}

// Matchea disyunciones: ER | ER
IRegularExpression Alternation() :
{
    IRegularExpression r1 = null, r2 = null; 
}
{
    r1=Concatenation() ( "|" r2=Alternation() )?
    { 
        if (r2 == null) {
            return r1;
        } else {
            return createAlternation(r1,r2);
        } 
    }
}

// Matchea concatenaciones: ER.ER
IRegularExpression Concatenation() :
{
    IRegularExpression r1 = null, r2 = null; 
}
{
    r1=Repetition() ( "." r2=Repetition() { r1 = createConcatenation(r1,r2); } )*
    { return r1; }
}

// Matchea repeticiones: ER*
IRegularExpression Repetition() :
{
    IRegularExpression r; 
}
{
    r=Atom() ( "*" { r = createRepetition(r); } )*
    { return r; }
}

// Matchea regex atomicas: (ER), Terminal, Vacio, Lambda
IRegularExpression Atom() :
{
    String t;
    IRegularExpression r;
}
{
    ( "(" r=Expression() ")" {return r;}) 
    | t=Terminal() { return createTerminal(t); }
    | <LAMBDA> { return createLambda(); }
    | <VACIO> { return createEmpty(); }
}

// Matchea un terminal (digito o minuscula) y devuelve su valor
String Terminal() :
{
    Token t;
}
{
    ( t=<DIGITO> | t=<MINUSCULA> ) { return t.image; }
}

Include php files when they are in different folders

If I understand you correctly, You have two folders, one houses your php script that you want to include into a file that is in another folder?

If this is the case, you just have to follow the trail the right way. Let's assume your folders are set up like this:

root
    includes
        php_scripts
            script.php
    blog
        content
            index.php

If this is the proposed folder structure, and you are trying to include the "Script.php" file into your "index.php" folder, you need to include it this way:

include("../../../includes/php_scripts/script.php");

The way I do it is visual. I put my mouse pointer on the index.php (looking at the file structure), then every time I go UP a folder, I type another "../" Then you have to make sure you go UP the folder structure ABOVE the folders that you want to start going DOWN into. After that, it's just normal folder hierarchy.

No module named Image

Did you setup PIL module? Link

You can try to reinstall it on your computer.

MySQL OPTIMIZE all tables?

my 2cents: start with table with highest fragmentation

for table in `mysql -sss -e "select concat(table_schema,".",table_name) from information_schema.tables where table_schema not in ('mysql','information_schema','performance_schema') order by data_free desc;"
do
mysql -e "OPTIMIZE TABLE $table;"
done

How to grep and replace

Here is what I would do:

find /path/to/dir -type f -iname "*filename*" -print0 | xargs -0 sed -i '/searchstring/s/old/new/g'

this will look for all files containing filename in the file's name under the /path/to/dir, than for every file found, search for the line with searchstring and replace old with new.

Though if you want to omit looking for a specific file with a filename string in the file's name, than simply do:

find /path/to/dir -type f -print0 | xargs -0 sed -i '/searchstring/s/old/new/g'

This will do the same thing above, but to all files found under /path/to/dir.

Insert the same fixed value into multiple rows

To update the content of existing rows use the UPDATE statement:

UPDATE table_name SET table_column = 'test';

onclick on a image to navigate to another page using Javascript

Because it makes these things so easy, you could consider using a JavaScript library like jQuery to do this:

<script>
    $(document).ready(function() {
        $('img.thumbnail').click(function() {
            window.location.href = this.id + '.html';
        });
    });
</script>

Basically, it attaches an onClick event to all images with class thumbnail to redirect to the corresponding HTML page (id + .html). Then you only need the images in your HTML (without the a elements), like this:

<img src="bottle.jpg" alt="bottle" class="thumbnail" id="bottle" />
<img src="glass.jpg" alt="glass" class="thumbnail" id="glass" />

Is there an Eclipse plugin to run system shell in the Console?

Simply create a new external tool configuration (from Eclipse Run -> External Tools)

for example - To open Cygwin terminal on the current resource directory:

Location:

C:\cygwin\bin\mintty.exe

Working Directory:

${container_loc}

Arguments:

-i /Cygwin-Terminal.ico  
-"cygpath -p '${container_loc}' | xargs cd"

Pentaho Data Integration SQL connection

You need to download mysql-connector-java-5.1.46.tar.gz, not the latest version. The Driver class that Pentaho uses is not included in mysql-connector-java-8.xx.yy versions.

JavaScript - Get Portion of URL Path

If you have an abstract URL string (not from the current window.location), you can use this trick:

let yourUrlString = "http://example.com:3000/pathname/?search=test#hash";

let parser = document.createElement('a');
parser.href = yourUrlString;

parser.protocol; // => "http:"
parser.hostname; // => "example.com"
parser.port;     // => "3000"
parser.pathname; // => "/pathname/"
parser.search;   // => "?search=test"
parser.hash;     // => "#hash"
parser.host;     // => "example.com:3000"

Thanks to jlong

How to commit to remote git repository

git push

git push server_name master

should do the trick, after you have made a commit to your local repository.

How can I remove 3 characters at the end of a string in php?

<?php echo substr("abcabcabc", 0, -3); ?>

Characters allowed in a URL

The upcoming change is for chinese, arabic domain names not URIs. The internationalised URIs are called IRIs and are defined in RFC 3987. However, having said that I'd recommend not doing this yourself but relying on an existing, tested library since there are lots of choices of URI encoding/decoding and what are considered safe by specification, versus what are safe by actual use (browsers).

Entity Framework - Include Multiple Levels of Properties

The EFCore examples on MSDN show that you can do some quite complex things with Include and ThenInclude.

This is a good example of how complex you can get (this is all one chained statement!):

viewModel.Instructors = await _context.Instructors

      .Include(i => i.OfficeAssignment)

      .Include(i => i.CourseAssignments)
        .ThenInclude(i => i.Course)
            .ThenInclude(i => i.Enrollments)
                .ThenInclude(i => i.Student)

      .Include(i => i.CourseAssignments)
        .ThenInclude(i => i.Course)
            .ThenInclude(i => i.Department)

      .AsNoTracking()
      .OrderBy(i => i.LastName)
      .ToListAsync();

You can have multiple Include calls - even after ThenInclude and it kind of 'resets' you back to the level of the top level entity (Instructors).

You can even repeat the same 'first level' collection (CourseAssignments) multiple times followed by separate ThenIncludes commands to get to different child entities.

Note your actual query must be tagged onto the end of the Include or ThenIncludes chain. The following does NOT work:

var query = _context.Instructors.AsQueryable();
query.Include(i => i.OfficeAssignment);

var first10Instructors = query.Take(10).ToArray();

Would strongly recommend you set up logging and make sure your queries aren't out of control if you're including more than one or two things. It's important to see how it actually works - and you'll notice each separate 'include' is typically a new query to avoid massive joins returning redundant data.

AsNoTracking can greatly speed things up if you're not intending on actually editing the entities and resaving.

EFCore 5 made some changes to the way queries for multiple sets of entities are sent to the server. There are new options for Split Queries which can make certain queries of this type far more efficient with fewer joins, but make sure to understand the limitations.

Calculate MD5 checksum for a file

And if you need to calculate the MD5 to see whether it matches the MD5 of an Azure blob, then this SO question and answer might be helpful: MD5 hash of blob uploaded on Azure doesnt match with same file on local machine

Switching the order of block elements with CSS

<div id="container">
    <div id="a">Block A</div>
    <div id="b">Block B</div>
    <div id="c">Block C</div>
</div>

lets say the height of a block is 100px

#container     {position:relative; height: 300px;}
#a, #b, #c     {position:absolute; height: 100px}
#c             {top: 0px;}
#b             {top: 100px;}
#a             {top: 200px;}

Programs & Examples On #Dependency walker

Dependency Walker reports IESHIMS.DLL and WER.DLL missing?

How do I determine the dependencies of a .NET application?

How to print colored text to the terminal?

how to call an ASP.NET c# method using javascript

How do I call a dynamically-named method in Javascript?

Converting XDocument to XmlDocument and vice versa

How to monitor SQL Server table changes by using c#?

java: HashMap<String, int> not working

Multiple conditions in if statement shell script

how to convert binary string to decimal?

array_push() with key value pair

Java integer list

push() a two-dimensional array

Excel 2010: how to use autocomplete in validation list

Passing a variable from one php include file to another: global vs. not

How to pass parameters to ThreadStart method in Thread?

Do checkbox inputs only post data if they're checked?

How to pass multiple parameters in thread in VB

Elasticsearch : Root mapping definition has unsupported parameters index : not_analyzed

Use custom build output folder when using create-react-app

How to remove carriage returns and new lines in Postgresql?

'heroku' does not appear to be a git repository

How to change the Spyder editor background to dark?

Android ImageButton with a selected state?

php $_GET and undefined index

How to send POST in angularjs with multiple params?

How to build and run Maven projects after importing into Eclipse IDE

Using setDate in PreparedStatement

tl;dr

Details

java.time

LocalDate

Before JDBC 4.2, convert

Placeholder value

About java.time

How to prettyprint a JSON file?

How do I use a custom Serializer with Jackson?

How do you upload a file to a document library in sharepoint?

Get human readable version of file size?

PHP form - on submit stay on same page

Double Iteration in List Comprehension

How to combine two strings together in PHP?

Git push error pre-receive hook declined

How do you fadeIn and animate at the same time?

How to write inside a DIV box with javascript

What's the difference between subprocess Popen and call (how can I use them)?

When should the xlsm or xlsb formats be used?

Group By Eloquent ORM

Inputting a default image in case the src attribute of an html <img> is not valid?

What's the difference between eval, exec, and compile?

How to set column header text for specific column in Datagridview C#

"The import org.springframework cannot be resolved."

RSA encryption and decryption in Python

C# difference between == and Equals()

Change jsp on button click

How to get the process ID to kill a nohup process?

ADB No Devices Found

spacing between form fields

How do I retrieve my MySQL username and password?

Why does npm install say I have unmet dependencies?

Why is there no multiple inheritance in Java, but implementing multiple interfaces is allowed?

How to base64 encode image in linux bash / shell

How do I create a timer in WPF?

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'MyController':

How to iterate for loop in reverse order in swift?

How can I increase the JVM memory?

How to set focus on input field?

UnicodeEncodeError: 'latin-1' codec can't encode character

Sequel Pro Alternative for Windows

Error : Program type already present: android.support.design.widget.CoordinatorLayout$Behavior

How to initialize a list of strings (List<string>) with many string values

appending list but error 'NoneType' object has no attribute 'append'

Vertical Alignment of text in a table cell

How to style the option of an html "select" element?

bash string equality

Darken background image on hover

Most popular screen sizes/resolutions on Android phones

Is not an enclosing class Java

reading an XML file in a C++ program

`LocalDate`

Alternative: cast to `regclass`

`to_regclass(rel_name)` in Postgres 9.4+