In C++ a class with at least one pure virtual function is called abstract class. You can not create objects of that class, but may only have pointers or references to it.

If you are deriving from an abstract class, then make sure you override and define all pure virtual functions for your class.

From your snippet Your class AliceUniversity seems to be an abstract class. It needs to override and define all the pure virtual functions of the classes Graduate and UniversityGraduate.

Pure virtual functions are the ones with = 0; at the end of declaration.

Example: virtual void doSomething() = 0;

For a specific answer, you will need to post the definition of the class for which you get the error and the classes from which that class is deriving.

You can actually provide implementations of pure virtual functions in C++. The only difference is all pure virtual functions must be implemented by derived classes before the class can be instantiated.

All good answers above. One extra thing you should keep in mind - you can also have a pure virtual destructor. The only difference is that you still need to implement it.

Confused?

    --- header file ----
    class foo {
    public:
      foo() {;}
      virtual ~foo() = 0;

      virtual bool overrideMe() {return false;}
    };

    ---- source ----
    foo::~foo()
    {
    }

The main reason you'd want to do this is if you want to provide interface methods, as I have, but make overriding them optional.

To make the class an interface class requires a pure virtual method, but all of your virtual methods have default implementations, so the only method left to make pure virtual is the destructor.

Reimplementing a destructor in the derived class is no big deal at all - I always reimplement a destructor, virtual or not, in my derived classes.

For future people struggling with a similar problem, the situation is that the compiler simply cannot find the type you are using (even if your Intelisense can find it).

This can be caused in many ways:

• You forgot to #include the header that defines it.
• Your inclusion guards (#ifndef BLAH_H) are defective (your #ifndef BLAH_H doesn't match your #define BALH_H due to a typo or copy+paste mistake).
• Your inclusion guards are accidentally used twice (two separate files both using #define MYHEADER_H, even if they are in separate directories)
• You forgot that you are using a template (eg. new Vector() should be new Vector<int>())
• The compiler is thinking you meant one scope when really you meant another (For example, if you have NamespaceA::NamespaceB, AND a <global scope>::NamespaceB, if you are already within NamespaceA, it'll look in NamespaceA::NamespaceB and not bother checking <global scope>::NamespaceB) unless you explicitly access it.
• You have a name clash (two entities with the same name, such as a class and an enum member).

To explicitly access something in the global namespace, prefix it with ::, as if the global namespace is a namespace with no name (e.g. ::MyType or ::MyNamespace::MyType).

With Java 8 in picture, jcmd is the preferred approach.

jcmd <PID> Thread.print

Following is the snippet from Oracle documentation :

The release of JDK 8 introduced Java Mission Control, Java Flight Recorder, and jcmd utility for diagnosing problems with JVM and Java applications. It is suggested to use the latest utility, jcmd instead of the previous jstack utility for enhanced diagnostics and reduced performance overhead.

However, shipping this with the application may be licensing implications which I am not sure.

Once upon a time in MySQL you could just copy all the table files to another directory in the mysql tree

mysql cli - create database db2

linux cli - cp db1 db2

It is a little complicated, but you can draw all the objects by the following code:

from mpl_toolkits.mplot3d import Axes3D
import matplotlib.pyplot as plt
import numpy as np
from itertools import product, combinations


fig = plt.figure()
ax = fig.gca(projection='3d')
ax.set_aspect("equal")

# draw cube
r = [-1, 1]
for s, e in combinations(np.array(list(product(r, r, r))), 2):
    if np.sum(np.abs(s-e)) == r[1]-r[0]:
        ax.plot3D(*zip(s, e), color="b")

# draw sphere
u, v = np.mgrid[0:2*np.pi:20j, 0:np.pi:10j]
x = np.cos(u)*np.sin(v)
y = np.sin(u)*np.sin(v)
z = np.cos(v)
ax.plot_wireframe(x, y, z, color="r")

# draw a point
ax.scatter([0], [0], [0], color="g", s=100)

# draw a vector
from matplotlib.patches import FancyArrowPatch
from mpl_toolkits.mplot3d import proj3d


class Arrow3D(FancyArrowPatch):

    def __init__(self, xs, ys, zs, *args, **kwargs):
        FancyArrowPatch.__init__(self, (0, 0), (0, 0), *args, **kwargs)
        self._verts3d = xs, ys, zs

    def draw(self, renderer):
        xs3d, ys3d, zs3d = self._verts3d
        xs, ys, zs = proj3d.proj_transform(xs3d, ys3d, zs3d, renderer.M)
        self.set_positions((xs[0], ys[0]), (xs[1], ys[1]))
        FancyArrowPatch.draw(self, renderer)

a = Arrow3D([0, 1], [0, 1], [0, 1], mutation_scale=20,
            lw=1, arrowstyle="-|>", color="k")
ax.add_artist(a)
plt.show()

Toggle icons in runtime:

In addition to the responses here, I found that once you have assigned an Icon to your application by the first time you cannot toggle it by just adding a new icon to your stage (this would be helpful if you need to toggle the icon of your app from on/off enabled/disabled).

To set a new icon during run time use the getIcons().remove(0) before trying to add a new icon, where 0 is the index of the icon you want to override like is shown here:

//Setting icon by first time (You can do this on your start method).
stage.getIcons().add(new Image(getClass().getResourceAsStream("enabled.png")));

//Overriding app icon with a new status (This can be in another method)
stage.getIcons().remove(0);
stage.getIcons().add(new Image(getClass().getResourceAsStream("disabled.png")));

To access the stage from other methods or classes you can create a new static field for stage in you main class so can access it from out of the start() method by encapsulating in on a static method that you can access from anywhere in your app.

public class MainApp extends Application {
    private static Stage stage;
    public static Stage getStage() { return stage; }

    @Override public void start(Stage primaryStage) {
        stage = primaryStage
        stage.getIcons().add(new Image(getClass().getResourceAsStream("enabled.png")));
    }
}

public class AnotherClass {
    public void setStageTitle(String newTitle) {
        MainApp.getStage().setTitle(newTitle);
        MainApp.getStage().getIcons().remove(0);
        MainApp.getStage().getIcons().add(new Image(getClass().getResourceAsStream("disabled.png")));
    }
}

The following query works. It uses each group to do the select instead of SelectMany. SelectMany works on each element from each collection. For example, in your query you have a result of 2 collections. SelectMany gets all the results, a total of 3, instead of each collection. The following code works on each IGrouping in the select portion to get your aggregate operations working correctly.

var results = from line in Lines
              group line by line.ProductCode into g
              select new ResultLine {
                ProductName = g.First().Name,
                Price = g.Sum(pc => pc.Price).ToString(),
                Quantity = g.Count().ToString(),
              };

An alternative to using a plugin is using an editor template. What you need to do is to create a template file in Shared\EditorTemplates folder and call it String.cshtml. Then put this in that file:

@Html.TextBox("",ViewData.TemplateInfo.FormattedModelValue, 
    new { placeholder = ViewData.ModelMetadata.Watermark })

Then use it in your view like this:

@Html.EditorFor(m=>Model.UnitPercent)

The downside, this works for properties of type string, and you will have to create a template for each type that you want support for a watermark.

You can always do

git clone git://repo.org/fossproject.git && rm -rf fossproject/.git

Inside your .idea folder, change workspace.xml file

Add

<property name="dynamic.classpath" value="true" />

to

  <component name="PropertiesComponent">
.
.
.
  </component>

Example

 <component name="PropertiesComponent">
    <property name="project.structure.last.edited" value="Project" />
    <property name="project.structure.proportion" value="0.0" />
    <property name="project.structure.side.proportion" value="0.0" />
    <property name="settings.editor.selected.configurable" value="preferences.pluginManager" />
    <property name="dynamic.classpath" value="true" />
  </component>

If you don't see one, feel free to add it yourself

 <component name="PropertiesComponent">
    <property name="dynamic.classpath" value="true" />
  </component>

If you have spaces in the name of the file and you have a character you need to escape:

You can use single AND double quotes to avoid any misnomers in the command.

scp ./'files name with spaces/internal folder with spaces/"text & files stored.txt"' .

The ^ character escapes the quotes otherwise.

Sadly, I am not aware of a way to do this in sh. However, using bash (starting in version 3.0.0, which is probably what you have), you can use the =~ operator like this:

#!/bin/bash
CURRENT_DIR=`pwd`

if [[ "$CURRENT_DIR" =~ "String1" ]]
then
 echo "String1 present"
elif [[ "$CURRENT_DIR" =~ "String2" ]]
then
 echo "String2 present"
else
 echo "Else"
fi

As an added bonus (and/or a warning, if your strings have any funny characters in them), =~ accepts regexes as the right operand if you leave out the quotes.

:m.+1 or :m.-2 would do if you're moving a single line. Here's my script to move multiple lines. In visual mode, Alt-up/Alt-down will move the lines containing the visual selection up/down by one line. In insert mode or normal mode, Alt-up/Alt-down will move the current line if no count prefix is given. If there's a count prefix, Alt-up/Alt-down will move that many lines beginning from the current line up/down by one line.

function! MoveLines(offset) range
    let l:col = virtcol('.')
    let l:offset = str2nr(a:offset)
    exe 'silent! :' . a:firstline . ',' . a:lastline . 'm'
        \ . (l:offset > 0 ? a:lastline + l:offset : a:firstline + l:offset)
    exe 'normal ' . l:col . '|'
endf

imap <silent> <M-up> <C-O>:call MoveLines('-2')<CR>
imap <silent> <M-down> <C-O>:call MoveLines('+1')<CR>
nmap <silent> <M-up> :call MoveLines('-2')<CR>
nmap <silent> <M-down> :call MoveLines('+1')<CR>
vmap <silent> <M-up> :call MoveLines('-2')<CR>gv
vmap <silent> <M-down> :call MoveLines('+1')<CR>gv

The backslash \ is the escape character for regular expressions. Therefore a double backslash would indeed mean a single, literal backslash.

\ (backslash) followed by any of [\^$.|?*+(){} escapes the special character to suppress its special meaning.

ref : http://www.regular-expressions.info/reference.html

First off, it might not be good to just go by recall alone. You can simply achieve a recall of 100% by classifying everything as the positive class. I usually suggest using AUC for selecting parameters, and then finding a threshold for the operating point (say a given precision level) that you are interested in.

For how class_weight works: It penalizes mistakes in samples of class[i] with class_weight[i] instead of 1. So higher class-weight means you want to put more emphasis on a class. From what you say it seems class 0 is 19 times more frequent than class 1. So you should increase the class_weight of class 1 relative to class 0, say {0:.1, 1:.9}. If the class_weight doesn't sum to 1, it will basically change the regularization parameter.

For how class_weight="auto" works, you can have a look at this discussion. In the dev version you can use class_weight="balanced", which is easier to understand: it basically means replicating the smaller class until you have as many samples as in the larger one, but in an implicit way.

It's hard to know how to help you without understanding the context / structure of your data, but I believe this might help you:

SELECT 
     SUM(CASE WHEN column1 IS NOT NULL THEN 1 ELSE 0 END) AS column1_count
    ,SUM(CASE WHEN column2 IS NOT NULL THEN 1 ELSE 0 END) AS column2_count
    ,SUM(CASE WHEN column3 IS NOT NULL THEN 1 ELSE 0 END) AS column3_count
FROM table

One solution that I've found is that you should have to change the .Net Framework back to v2.0 by Right Clicking on the site that you have manager under the Application Pools from the Advance Settings.

You can use ALTER command to modify the table schema.

The syntax for modifying the column size is

ALTER table table_name modify COLUMN column_name varchar (size);

If you are considering creating a function, try this: DECLARE @schema sysname = 'dbo' , @tablename sysname = 'mvtEST' , @cmd NVarchar(2000) , @ColName sysname

    DECLARE @NewLine Table
    (ColumnName Varchar(100)
    ,Location Int
    ,ColumnValue Varchar(8000)
    )

    SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE  TABLE_SCHEMA = @schema AND TABLE_NAME =  @tablename AND DATA_TYPE LIKE '%CHAR%'

    DECLARE looper CURSOR FAST_FORWARD for
    SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA = @schema AND TABLE_NAME =  @tablename AND DATA_TYPE LIKE '%CHAR%'
    OPEN looper
    FETCH NEXT FROM looper INTO @ColName

    WHILE @@fetch_status = 0
    BEGIN
    SELECT @cmd = 'select ''' +@ColName+    ''',  CHARINDEX(Char(10),  '+  @ColName +') , '+ @ColName + ' from '+@schema + '.'+@tablename +' where CHARINDEX(Char(10),  '+  @ColName +' ) > 0 or CHARINDEX(CHAR(13), '+@ColName +') > 0'
    PRINT @cmd
    INSERT @NewLine ( ColumnName, Location, ColumnValue )
    EXEC sp_executesql @cmd
    FETCH NEXT FROM looper INTO @ColName
    end
    CLOSE looper
    DEALLOCATE looper


    SELECT * FROM  @NewLine

I realize this is on older question but just wanted to add that

Environment.NewLine

also works if doing this through code.

You have broken version of RVM. Ubuntu does something to RVM that produces lots of errors, the only safe way of fixing for now is to:

sudo apt-get --purge remove ruby-rvm
sudo rm -rf /usr/share/ruby-rvm /etc/rvmrc /etc/profile.d/rvm.sh

open new terminal and validate environment is clean from old RVM settings (should be no output):

env | grep rvm

if there was output, try to open new terminal, if it does not help then restart your computer.

install RVM:

\curl -L https://get.rvm.io | 
  bash -s stable --ruby --autolibs=enable --auto-dotfiles

If you find you need some hand-holding, take a look at Installing Ruby on Ubuntu 12.04, which gives a bit more explanation.

I think you are missing using System.Linq; from this system class.

and also add using System.Data.Entity; to the code

Go to the path and trigger this command.

rd /s /q "FOLDER_NAME"

/s : Removes the specified directory and all subdirectories including any files. Use /s to remove a tree.

/q : Runs rmdir in quiet mode. Deletes directories without confirmation.

/? : Displays help at the command prompt.

Your calculation is correct for DATE types, but if your values are timestamps, you should probably use EXTRACT (or DATE_PART) to be sure to get only the difference in full days;

EXTRACT(DAY FROM MAX(joindate)-MIN(joindate)) AS DateDifference

An SQLfiddle to test with. Note the timestamp difference being 1 second less than 2 full days.

The instanceof keyword, as described by the other answers, is usually what you would want. Keep in mind that instanceof will return true for superclasses as well.

If you want to see if an object is a direct instance of a class, you could compare the class. You can get the class object of an instance via getClass(). And you can statically access a specific class via ClassName.class.

So for example:

if (a.getClass() == X.class) {
  // do something
}

In the above example, the condition is true if a is an instance of X, but not if a is an instance of a subclass of X.

In comparison:

if (a instanceof X) {
    // do something
  }

In the instanceof example, the condition is true if a is an instance of X, or if a is an instance of a subclass of X.

Most of the time, instanceof is right.

Just set the selectIndex of the associated <select> tag to -1 as the last step of your processing event.

mySelect = document.getElementById("idlist");
mySelect.selectedIndex = -1; 

It works every time, removing the highlight and allowing you to select the same (or different) element again .

You can use also:

(Get-Service 'winmgmt').StartType

It returns just the startup type, for example, disabled.

It’s because you tried to update a table without a WHERE that uses a KEY column.

The quick fix is to add SET SQL_SAFE_UPDATES=0; before your query :

SET SQL_SAFE_UPDATES=0; 

Or

close the safe update mode. Edit -> Preferences -> SQL Editor -> SQL Editor remove Forbid UPDATE and DELETE statements without a WHERE clause (safe updates) .

BTW you can use TRUNCATE TABLE tablename; to delete all the records .

Get device token in Swift 3

func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {

    let deviceTokenString = deviceToken.reduce("", {$0 + String(format: "%02X", $1)})

    print("Device token: \(deviceTokenString)")

}

Use org.springframework.web.servlet.config.annotation.WebMvcConfigurer

With Spring Boot 2.1.4.RELEASE (Spring Framework 5.1.6.RELEASE), do like this

package vn.bkit;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter; // Deprecated.
import org.springframework.web.servlet.view.InternalResourceViewResolver;

@Configuration
@EnableWebMvc
public class MvcConfiguration implements WebMvcConfigurer {

    @Bean
    public ViewResolver getViewResolver() {
        InternalResourceViewResolver resolver = new InternalResourceViewResolver();
        resolver.setPrefix("/WEB-INF/");
        resolver.setSuffix(".html");
        return resolver;
    }

    @Override
    public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
        configurer.enable();
    }

}

This gives the count of number of lines without counting the blank lines:

grep -v ^$ filename wc -l | sed -e 's/ //g' 

Try Array filter method for filter the array of objects with property.

var jsObjects = [
   {a: 1, b: 2}, 
   {a: 3, b: 4}, 
   {a: 5, b: 6}, 
   {a: 7, b: 8}
];

using array filter method:

var filterObj = jsObjects.filter(function(e) {
  return e.b == 6;
});

using for in loop :

for (var i in jsObjects) {
  if (jsObjects[i].b == 6) {
    console.log(jsObjects[i]); // {a: 5, b: 6}
  }
}

Working fiddle : https://jsfiddle.net/uq9n9g77/

DrawerLayout Properties android:layout_gravity="right|end" and tools:openDrawer="end" NavigationView Property android:layout_gravity="end"

XML Layout

<?xml version="1.0" encoding="utf-8"?>
<androidx.drawerlayout.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    android:layout_gravity="right|end"
    tools:openDrawer="end">

    <include layout="@layout/content_main" />

    <com.google.android.material.navigation.NavigationView
        android:id="@+id/nav_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="end"
        android:fitsSystemWindows="true"
        app:headerLayout="@layout/nav_header_main"
        app:menu="@menu/activity_main_drawer" />

</androidx.drawerlayout.widget.DrawerLayout>

Java Code

// Appropriate Click Event or Menu Item Click Event

if (drawerLayout.isDrawerOpen(GravityCompat.END)) 
{
     drawerLayout.closeDrawer(GravityCompat.END);
} 
else 
{
     drawerLayout.openDrawer(GravityCompat.END);
}
//With Toolbar
toolbar = (Toolbar) findViewById(R.id.toolbar);

drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
            this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();

toolbar.setNavigationOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            //Gravity.END or Gravity.RIGHT
            if (drawer.isDrawerOpen(Gravity.END)) {
                drawer.closeDrawer(Gravity.END);
            } else {
                drawer.openDrawer(Gravity.END);
            }
        }
    });
//...
}

To solve this with homebrew, you can temporarily backdate homebrew-core and set the HOMEBREW_NO_AUTO_UPDATE variable to hold it in place:

cd `brew --repo homebrew/core`
git checkout f2a764ef944b1080be64bd88dca9a1d80130c558
export HOMEBREW_NO_AUTO_UPDATE=1
brew install python

I don't recommend permanently backdating homebrew-core, as you will miss out on security patches, but it is useful for testing purposes.

You can also extract old versions of homebrew formulae into your own tap (tap_owner/tap_name) using the brew extract command:

brew extract python tap_owner/tap_name --version=3.6.5

multiple inserts are faster but it has thredshould. another thrik is disabling constrains checks temprorary make inserts much much faster. It dosn't matter your table has it or not. For example test disabling foreign keys and enjoy the speed:

SET FOREIGN_KEY_CHECKS=0;

offcourse you should turn it back on after inserts by:

SET FOREIGN_KEY_CHECKS=1;

this is common way to inserting huge data. the data integridity may break so you shoud care of that before disabling foreign key checks.

It sounds like your error comes from an attempt to run something like this (which works in Linux)

NODE_ENV=development node foo.js

the equivalent in Windows would be

SET NODE_ENV=development
node foo.js

running in the same command shell. You mentioned set NODE_ENV did not work, but wasn't clear how/when you executed it.

Using POST

function DoAction( id, name )
{
    $.ajax({
         type: "POST",
         url: "someurl.php",
         data: "id=" + id + "&name=" + name,
         success: function(msg){
                     alert( "Data Saved: " + msg );
                  }
    });
}

Using GET

function DoAction( id, name )
{
     $.ajax({
          type: "GET",
          url: "someurl.php",
          data: "id=" + id + "&name=" + name,
          success: function(msg){
                     alert( "Data Saved: " + msg );
                   }
     });
}

EDIT:

A, perhaps, better way to do this that would work (using GET) if javascript were not enabled would be to generate the URL for the href, then use a click handler to call that URL via ajax instead.

<a href="/someurl.php?id=1&name=Jose" class="ajax-link"> Click </a>
<a href="/someurl.php?id=2&name=Juan" class="ajax-link"> Click </a>
<a href="/someurl.php?id=3&name=Pedro" class="ajax-link"> Click </a>
...
<a href="/someurl.php?id=n&name=xxx" class="ajax-link"> Click </a>

<script type="text/javascript">
$(function() {
   $('.ajax-link').click( function() {
         $.get( $(this).attr('href'), function(msg) {
              alert( "Data Saved: " + msg );
         });
         return false; // don't follow the link!
   });
});
</script>

Bash allow u to use =~ to test if the substring is contained. Ergo, the use of negate will allow to test the opposite.

fullstring="123asdf123"
substringA=asdf
substringB=gdsaf
# test for contains asdf, gdsaf and for NOT CONTAINS gdsaf 
[[ $fullstring =~ $substring ]] && echo "found substring $substring in $fullstring"
[[ $fullstring =~ $substringB ]] && echo "found substring $substringB in $fullstring" || echo "failed to find"
[[ ! $fullstring =~ $substringB ]] && echo "did not find substring $substringB in $fullstring"

Although using '@' is more appropriate than using '=' for your particular scenario, sometimes I use '=' so that I don't have to remember to use attrs.$observe():

<su-label tooltip="field.su_documentation">{{field.su_name}}</su-label>

Directive:

myApp.directive('suLabel', function() {
    return {
        restrict: 'E',
        replace: true,
        transclude: true,
        scope: {
            title: '=tooltip'
        },
        template: '<label><a href="#" rel="tooltip" title="{{title}}" data-placement="right" ng-transclude></a></label>',
        link: function(scope, element, attrs) {
            if (scope.title) {
                element.addClass('tooltip-title');
            }
        },
    }
});

Fiddle.

With '=' we get two-way databinding, so care must be taken to ensure scope.title is not accidentally modified in the directive. The advantage is that during the linking phase, the local scope property (scope.title) is defined.

set.seed(1)
example <- data.frame(col1 = rnorm(10, 0, 1), col2 = rnorm(10, 2, 3))
namevector <- c("col3", "col4")
example[ , namevector] <- NA

example
#          col1       col2 col3 col4
# 1  -0.6264538  6.5353435   NA   NA
# 2   0.1836433  3.1695297   NA   NA
# 3  -0.8356286  0.1362783   NA   NA
# 4   1.5952808 -4.6440997   NA   NA
# 5   0.3295078  5.3747928   NA   NA
# 6  -0.8204684  1.8651992   NA   NA
# 7   0.4874291  1.9514292   NA   NA
# 8   0.7383247  4.8315086   NA   NA
# 9   0.5757814  4.4636636   NA   NA
# 10 -0.3053884  3.7817040   NA   NA

I imagine this like that:

<html>
<head>
<script>
var frame_loaded = 0;
function setFrameLoaded()
{
   frame_loaded = 1;
   alert("Iframe is loaded");
}
$('#click').click(function(){
   if(frame_loaded == 1)
    console.log('iframe loaded')
   } else {
    console.log('iframe not loaded')
   }
})
</script>
</head>
<button id='click'>click me</button>

<iframe id='MainPopupIframe' onload='setFrameLoaded();' src='http://...' />...</iframe>

My approach to understand zookeeper was, to play around with the CLI client. as described in Getting Started Guide and Command line interface

From this I learned that zookeeper's surface looks very similar to a filesystem and clients can create and delete objects and read or write data.

Example CLI commands

create /myfirstnode mydata
ls /
get /myfirstnode
delete /myfirstnode

Try yourself

How to spin up a zookeper environment within minutes on docker for windows, linux or mac:

One time set up:

docker network create dn

Run server in a terminal window:

docker run --network dn --name zook -d zookeeper
docker logs -f zookeeper

Run client in a second terminal window:

docker run -it --rm --network dn zookeeper zkCli.sh -server zook

See also documentation of image on dockerhub

A minor update to this: a sender should never set the Return-Path: header. There's no such thing as a Return-Path: header for a message in transit. That header is set by the MTA that makes final delivery, and is generally set to the value of the 5321.From unless the local system needs some kind of quirky routing.

It's a common misunderstanding because users rarely see an email without a Return-Path: header in their mailboxes. This is because they always see delivered messages, but an MTA should never see a Return-Path: header on a message in transit. See http://tools.ietf.org/html/rfc5321#section-4.4

Finaly I found another answer for this problem. and this is working for me. Just add below datas to the your webconfig file.

<configuration>
 <system.webServer>
  <security>
   <requestFiltering>
    <verbs allowUnlisted="true">
     <add verb="OPTIONS" allowed="false" />
    </verbs>
   </requestFiltering>
  </security>
 </system.webServer>
</configuration>

Form more information, you can visit this web site: http://www.iis.net/learn/manage/configuring-security/use-request-filtering

if you want to test your web site, is it working or not... You can use "HttpRequester" mozilla firefox plugin. for this plugin: https://addons.mozilla.org/En-us/firefox/addon/httprequester/

If the value type is already double, then update the value with $set command can not change the value type double to int when using NumberInt() or NumberLong() function. So, to Change the value type, it must update the whole record.

var re = db.data.find({"name": "zero"})
re['value']=NumberInt(0)
db.data.update({"name": "zero"}, re)

we can even write like this by creating a new String object in the class and assigning it what ever we want in constructor and return that in toString method which is overridden

public class Student{  
 int id;  
 String name;  
 String address;  
 String details;
 Student(int id, String name, String address){  
 this.id=id;  
 this.name=name;  
 this.address=address;  
 this.details=id+"  "+name+"  "+address;  
 }  

//overriding the toString() method  
public String toString(){ 
  return details;  
 }  
 public static void main(String args[]){  
   Student s1=new Student(100,"Joe","success");  
   Student s2=new Student(50,"Jeff","fail");  

   System.out.println(s1);//compiler writes here s1.toString()  
   System.out.println(s2);//compiler writes here s2.toString()  
 }  
}

This is done using the REPLACE function

To strip out "somestring" from "SomeColumn" in "SomeTable" in the SELECT query:

SELECT REPLACE([SomeColumn],'somestring','') AS [SomeColumn]  FROM [SomeTable]

To update the table and strip out "somestring" from "SomeColumn" in "SomeTable"

UPDATE [SomeTable] SET [SomeColumn] = REPLACE([SomeColumn], 'somestring', '')

Links to access the JDK documentation

• Java SE 15: Download
• Java SE 14: Download | online | Javadoc
• Java SE 13: Download | online
• Java SE 12: Download | Online
• Java SE 11: Download | Online
• Java SE 10: (former download link now reports “end of support”) | Online
• Java SE 9: Download | Online
• Java SE 8: Download | Online
• Java SE 7: (former download link now fails) | Online
• Java SE 6: Download | Online

By the way, a history of Java SE versions.

I recently discovered that using strtolower() can cause issues where the data is truncated after a special character.

The solution was to use

mb_strtolower($string, 'UTF-8');

mb_ uses MultiByte. It supports more characters but in general is a little slower.

function TellFirstCharacterType(inputString){
    var firstCharacter = inputString[0];
    if(isNaN(firstCharacter)){
        if(firstCharacter == firstCharacter.toUpperCase()){
            return "It's a uppercase character";
        }
        else{
            return "It's a lowercase character";
        }
    }
    else{
        return "It's a Number";
    }
}

I call a scheduled script who must connect to a list of Server this way:

Powershell.exe -File "YourScriptPath" "Par1,Par2,Par3"

Then inside the script:

param($list_of_servers)
...
Connect-Viserver $list_of_servers.split(",")

The split operator returns an array of string

This usually occurs when your current directory does not exist anymore. Most likely, from another terminal you remove that directory (from within a script or whatever). To get rid of this, in case your current directory was recreated in the meantime, just cd to another (existing) directory and then cd back; the simplest would be: cd; cd -.

Your error

InvalidStateError: An attempt was made to use an object that is not, or is no longer, usable

appears because you must call setRequestHeader after calling open. Simply move your setRequestHeader line below your open line (but before send):

xmlhttp.open("POST", url);
xmlhttp.setRequestHeader("x-filename", photoId);
xmlhttp.send(formData);

Linux specific, TLDR:

1. backtrace in glibc produces accurate stacktraces only when -lunwind is linked (undocumented platform-specific feature).
2. To output function name, source file and line number use #include <elfutils/libdwfl.h> (this library is documented only in its header file). backtrace_symbols and backtrace_symbolsd_fd are least informative.

On modern Linux your can get the stacktrace addresses using function backtrace. The undocumented way to make backtrace produce more accurate addresses on popular platforms is to link with -lunwind (libunwind-dev on Ubuntu 18.04) (see the example output below). backtrace uses function _Unwind_Backtrace and by default the latter comes from libgcc_s.so.1 and that implementation is most portable. When -lunwind is linked it provides a more accurate version of _Unwind_Backtrace but this library is less portable (see supported architectures in libunwind/src).

Unfortunately, the companion backtrace_symbolsd and backtrace_symbols_fd functions have not been able to resolve the stacktrace addresses to function names with source file name and line number for probably a decade now (see the example output below).

However, there is another method to resolve addresses to symbols and it produces the most useful traces with function name, source file and line number. The method is to #include <elfutils/libdwfl.h>and link with -ldw (libdw-dev on Ubuntu 18.04).

Working C++ example (test.cc):

#include <stdexcept>
#include <iostream>
#include <cassert>
#include <cstdlib>
#include <string>

#include <boost/core/demangle.hpp>

#include <execinfo.h>
#include <elfutils/libdwfl.h>

struct DebugInfoSession {
    Dwfl_Callbacks callbacks = {};
    char* debuginfo_path = nullptr;
    Dwfl* dwfl = nullptr;

    DebugInfoSession() {
        callbacks.find_elf = dwfl_linux_proc_find_elf;
        callbacks.find_debuginfo = dwfl_standard_find_debuginfo;
        callbacks.debuginfo_path = &debuginfo_path;

        dwfl = dwfl_begin(&callbacks);
        assert(dwfl);

        int r;
        r = dwfl_linux_proc_report(dwfl, getpid());
        assert(!r);
        r = dwfl_report_end(dwfl, nullptr, nullptr);
        assert(!r);
        static_cast<void>(r);
    }

    ~DebugInfoSession() {
        dwfl_end(dwfl);
    }

    DebugInfoSession(DebugInfoSession const&) = delete;
    DebugInfoSession& operator=(DebugInfoSession const&) = delete;
};

struct DebugInfo {
    void* ip;
    std::string function;
    char const* file;
    int line;

    DebugInfo(DebugInfoSession const& dis, void* ip)
        : ip(ip)
        , file()
        , line(-1)
    {
        // Get function name.
        uintptr_t ip2 = reinterpret_cast<uintptr_t>(ip);
        Dwfl_Module* module = dwfl_addrmodule(dis.dwfl, ip2);
        char const* name = dwfl_module_addrname(module, ip2);
        function = name ? boost::core::demangle(name) : "<unknown>";

        // Get source filename and line number.
        if(Dwfl_Line* dwfl_line = dwfl_module_getsrc(module, ip2)) {
            Dwarf_Addr addr;
            file = dwfl_lineinfo(dwfl_line, &addr, &line, nullptr, nullptr, nullptr);
        }
    }
};

std::ostream& operator<<(std::ostream& s, DebugInfo const& di) {
    s << di.ip << ' ' << di.function;
    if(di.file)
        s << " at " << di.file << ':' << di.line;
    return s;
}

void terminate_with_stacktrace() {
    void* stack[512];
    int stack_size = ::backtrace(stack, sizeof stack / sizeof *stack);

    // Print the exception info, if any.
    if(auto ex = std::current_exception()) {
        try {
            std::rethrow_exception(ex);
        }
        catch(std::exception& e) {
            std::cerr << "Fatal exception " << boost::core::demangle(typeid(e).name()) << ": " << e.what() << ".\n";
        }
        catch(...) {
            std::cerr << "Fatal unknown exception.\n";
        }
    }

    DebugInfoSession dis;
    std::cerr << "Stacktrace of " << stack_size << " frames:\n";
    for(int i = 0; i < stack_size; ++i) {
        std::cerr << i << ": " << DebugInfo(dis, stack[i]) << '\n';
    }
    std::cerr.flush();

    std::_Exit(EXIT_FAILURE);
}

int main() {
    std::set_terminate(terminate_with_stacktrace);
    throw std::runtime_error("test exception");
}

Compiled on Ubuntu 18.04.4 LTS with gcc-8.3:

g++ -o test.o -c -m{arch,tune}=native -std=gnu++17 -W{all,extra,error} -g -Og -fstack-protector-all test.cc
g++ -o test -g test.o -ldw -lunwind

Outputs:

Fatal exception std::runtime_error: test exception.
Stacktrace of 7 frames:
0: 0x55f3837c1a8c terminate_with_stacktrace() at /home/max/src/test/test.cc:76
1: 0x7fbc1c845ae5 <unknown>
2: 0x7fbc1c845b20 std::terminate()
3: 0x7fbc1c845d53 __cxa_throw
4: 0x55f3837c1a43 main at /home/max/src/test/test.cc:103
5: 0x7fbc1c3e3b96 __libc_start_main at ../csu/libc-start.c:310
6: 0x55f3837c17e9 _start

When no -lunwind is linked, it produces a less accurate stacktrace:

0: 0x5591dd9d1a4d terminate_with_stacktrace() at /home/max/src/test/test.cc:76
1: 0x7f3c18ad6ae6 <unknown>
2: 0x7f3c18ad6b21 <unknown>
3: 0x7f3c18ad6d54 <unknown>
4: 0x5591dd9d1a04 main at /home/max/src/test/test.cc:103
5: 0x7f3c1845cb97 __libc_start_main at ../csu/libc-start.c:344
6: 0x5591dd9d17aa _start

For comparison, backtrace_symbols_fd output for the same stacktrace is least informative:

/home/max/src/test/debug/gcc/test(+0x192f)[0x5601c5a2092f]
/usr/lib/x86_64-linux-gnu/libstdc++.so.6(+0x92ae5)[0x7f95184f5ae5]
/usr/lib/x86_64-linux-gnu/libstdc++.so.6(_ZSt9terminatev+0x10)[0x7f95184f5b20]
/usr/lib/x86_64-linux-gnu/libstdc++.so.6(__cxa_throw+0x43)[0x7f95184f5d53]
/home/max/src/test/debug/gcc/test(+0x1ae7)[0x5601c5a20ae7]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe6)[0x7f9518093b96]
/home/max/src/test/debug/gcc/test(+0x1849)[0x5601c5a20849]

In a production version (as well as C language version) you may like to make this code extra robust by replacing boost::core::demangle, std::string and std::cout with their underlying calls.

You can also override __cxa_throw to capture the stacktrace when an exception is thrown and print it when the exception is caught. By the time it enters catch block the stack has been unwound, so it is too late to call backtrace, and this is why the stack must be captured on throw which is implemented by function __cxa_throw. Note that in a multi-threaded program __cxa_throw can be called simultaneously by multiple threads, so that if it captures the stacktrace into a global array that must be thread_local.

I suppose https://get-ytt.io/ would be an acceptable solution to your problem

[System.Diagnostics.FileVersionInfo]::GetVersionInfo("Path\To\File.dll")

If you have a modern Windows (that has powershell installed), the following may work fine as well

call :PrintBright Something Something

  (do actual batch stuff here)

call :PrintBright Done!
goto :eof


:PrintBright
powershell -Command Write-Host "%*" -foreground "White"

Adjust the color as you see fit.

There is a bunch on here:

http://www.webservicex.net/WS/wscatlist.aspx

Just google for "Free WebService" or "Open WebService" and you'll find tons of open SOAP endpoints.

Remember, you can get a WSDL from any ASMX endpoint by adding ?WSDL to the url.

First if the object you're dealing with is a string then you need to parse it then figure out the length of the keys :

obj = JSON.parse(jsonString);
shareInfoLen = Object.keys(obj.shareInfo[0]).length;

Another pure css based solution that is based on two clipped rounded elements that i rotate to get to the right angle:

http://jsfiddle.net/maayan/byT76/

That's the basic css that enables it:

.clip1 {
    position:absolute;
    top:0;left:0;
    width:200px;
    height:200px;
    clip:rect(0px,200px,200px,100px);
}
.slice1 {
    position:absolute;
    width:200px;
    height:200px;
    clip:rect(0px,100px,200px,0px);
    -moz-border-radius:100px;
    -webkit-border-radius:100px; 
    border-radius:100px;
    background-color:#f7e5e1;
    border-color:#f7e5e1;
    -moz-transform:rotate(0);
    -webkit-transform:rotate(0);
    -o-transform:rotate(0);
    transform:rotate(0);
}

.clip2 
{
    position:absolute;
    top:0;left:0;
    width:200px;
    height:200px;
    clip:rect(0,100px,200px,0px);
}

.slice2
{
    position:absolute;
    width:200px;
    height:200px;
    clip:rect(0px,200px,200px,100px);
    -moz-border-radius:100px;
    -webkit-border-radius:100px; 
    border-radius:100px;
    background-color:#f7e5e1;
    border-color:#f7e5e1;
    -moz-transform:rotate(0);
    -webkit-transform:rotate(0);
    -o-transform:rotate(0);
    transform:rotate(0);
}

and the js rotates it as required.

quite easy to understand..

Hope it helps, Maayan

This is interesting, I also stumbled upon this issue. What you asked perhaps how to get the last ID of a certain model regardless of it's state, whether it's just been inserted or not. To further understand what getInsertID does, we need to take a look at the source:

Link 1: http://api20.cakephp.org/view_source/model#line-3375

public function getInsertID() {
  return $this->_insertID
}

Yup, that's the only piece of code inside that function. It means that cakephp caches any last inserted ID, instead of retrieve it from the database. That's why you get nothing if you use that function when you haven't done any record creation on the model.

I made a small function to get the last ID of a certain table, but please note that this should not be used as a replacement of getLastID() or getLastInsertID(), since it has an entirely different purpose.

Add the function lastID() to the AppModel as shown below so that it can be used system wide. It has it's limit, which can't be used on model with composite primary key.

class AppModel extends Model {
  public function lastID() {
    $data = $this->find('first', 
      array(
        'order' => array($this->primaryKey . ' DESC'),
        'fields' => array($this->primaryKey)
      )
    );

    return $data[$this->name][$this->primaryKey];
  }
}

Original Source : Class Model

You cannot add a column with a default value in Hive. You have the right syntax for adding the column ALTER TABLE test1 ADD COLUMNS (access_count1 int);, you just need to get rid of default sum(max_count). No changes to that files backing your table will happen as a result of adding the column. Hive handles the "missing" data by interpreting NULL as the value for every cell in that column.

So now your have the problem of needing to populate the column. Unfortunately in Hive you essentially need to rewrite the whole table, this time with the column populated. It may be easier to rerun your original query with the new column. Or you could add the column to the table you have now, then select all of its columns plus value for the new column.

You also have the option to always COALESCE the column to your desired default and leave it NULL for now. This option fails when you want NULL to have a meaning distinct from your desired default. It also requires you to depend on always remembering to COALESCE.

If you are very confident in your abilities to deal with the files backing Hive, you could also directly alter them to add your default. In general I would recommend against this because most of the time it will be slower and more dangerous. There might be some case where it makes sense though, so I've included this option for completeness.

You can use this simple plugin to add scrollUp and scrollDown to your jQuery

https://github.com/phpust/JQueryScrollDetector

var lastScrollTop = 0;
var action = "stopped";
var timeout = 100;
// Scroll end detector:
$.fn.scrollEnd = function(callback, timeout) {    
      $(this).scroll(function(){
        // get current scroll top 
        var st = $(this).scrollTop();
        var $this = $(this);
        // fix for page loads
        if (lastScrollTop !=0 )
        {
            // if it's scroll up
            if (st < lastScrollTop){
                action = "scrollUp";
            } 
            // else if it's scroll down
            else if (st > lastScrollTop){
                action = "scrollDown";
            }
        }
        // set the current scroll as last scroll top
        lastScrollTop = st;
        // check if scrollTimeout is set then clear it
        if ($this.data('scrollTimeout')) {
          clearTimeout($this.data('scrollTimeout'));
        }
        // wait until timeout done to overwrite scrolls output
        $this.data('scrollTimeout', setTimeout(callback,timeout));
    });
};

$(window).scrollEnd(function(){
    if(action!="stopped"){
        //call the event listener attached to obj.
        $(document).trigger(action); 
    }
}, timeout);

function UpdateClick(btn) {

    for (i = 0; i < Page_Validators.length; i++) {

        ValidatorValidate(Page_Validators[i]);

        if (Page_Validators[i].isvalid == false)

            return false;
    }

    btn.disabled = 'false';

    btn.value = 'Please Wait...';

    return true;
}

to demonstrate the lambda x:[f1(),f2()] effect which enables us to execute multiple functions in lambda. it also demonstrates the single line if else conditions if you really want to shrink the code.

• note that f1() can be a lambda function also(recursive lambda or lambda within lambda). and that inner lambda can be a statement/function of your choice.
• you can also put exec('statement') for example lambda x:[exec('a=[1]'),exec('b=2')]

a python implementation of touch(linux) command which creates empty files if they are not already existing.

def touch(fpath):
    check= os.path.exists(fpath)
    (lambda fname1:[open(fname1,"w+",errors="ignore").write(""),print('Touched',fname1)] 
    if not check else None) (fpath)

will print [ Touched fpath ] where fpath is file path given as input. will do nothing if file already exist.

the (lambda x: [ f(x), f2(x) ] ) (inp) <- we pass the 'inp' as input to lambda which in this case is the fpath.

or you can call tableView method to set the footer height in 1 point, and it will add an last line, but you can hide it too, by setting footer background color.

code:

func tableView(tableView: UITableView,heightForFooterInSection section: Int) -> CGFloat {
     return 1
}

looks like last line

In addition to running it with mvn exec:java, you can also run it with mvn exec:exec

mvn exec:exec -Dexec.executable="java" -Dexec.args="-classpath %classpath your.package.MainClass"

In a simpler way open search window and search for connection.xml gives a right click on that file and select open file/folder location. Once you get that connection.xml try to import it into SQLDeveloper by right clicking to CONNECTIONS.

Try this:

delete from your_table;    
delete from sqlite_sequence where name='your_table';

SQLite Autoincrement

SQLite keeps track of the largest ROWID that a table has ever held using the special SQLITE_SEQUENCE table. The SQLITE_SEQUENCE table is created and initialized automatically whenever a normal table that contains an AUTOINCREMENT column is created. The content of the SQLITE_SEQUENCE table can be modified using ordinary UPDATE, INSERT, and DELETE statements. But making modifications to this table will likely perturb the AUTOINCREMENT key generation algorithm. Make sure you know what you are doing before you undertake such changes.

You can set :

overflow-y: scroll;height: XX px

1. varchar

2. String

3. A simple regex. See: How to check if a string contains only digits in Java. Use javax.constraints.Pattern.

error 'Class' does not name a type

Just in case someone does the same idiotic thing I did ... I was creating a small test program from scratch and I typed Class instead of class (with a small C). I didn't take any notice of the quotes in the error message and spent a little too long not understanding my problem.

My search for a solution brought me here so I guess the same could happen to someone else.

Read http://chris-alexander.co.uk/on-engineering/dev/android-fragments-within-fragments/

article. fragment.isResumed() checking helps me in onDestroyView w/o using onSaveInstanceState method.

You could use width: 100%; in your css.

For purposes like this one I use VLC as a redistribution server. You said you get to catch the video with VLC? Right-click on the media in VLC, select "stream" and choose your options. You can also do it with command line, which gives you potential benefits of various option (transcoding, scaling, compressing, desinterlacing). Here is a batch that starts VLC distribution from source to its own 555 port (so you will have to type rstp://myvlcserveripaddress:555 in your src option on the webpage to get the stream)

cd \
cd C:\Program Files (x86)\VideoLAN\VLC\

vlc --logo-file C:\logo.png --logo-position 5 --logo-opacity 200 --logo-x 900 --logo-y -2 "mmsh://typeyoursourceIPhere:554" :sout=#transcode{vcodec=div3,vb=800,scale=0,acodec=mpga,ab=128,channels=2,samplerate=44100}:duplicate{dst=rtp{mux=ts,sdp=rtsp://:555/stream}} :sout-all :sout-keep

Here, you have a sample of a webpage that embeds player (based on VLC plugin).

SUM is an aggregate function. It will calculate the total for each group. + is used for calculating two or more columns in a row.

Consider this example,

ID  VALUE1  VALUE2
===================
1   1       2
1   2       2
2   3       4
2   4       5

SELECT  ID, SUM(VALUE1), SUM(VALUE2)
FROM    tableName
GROUP   BY ID

will result

ID, SUM(VALUE1), SUM(VALUE2)
1   3           4
2   7           9

SELECT  ID, VALUE1 + VALUE2
FROM    TableName

will result

ID, VALUE1 + VALUE2
1   3
1   4
2   7
2   9

SELECT  ID, SUM(VALUE1 + VALUE2)
FROM    tableName
GROUP   BY ID

will result

ID, SUM(VALUE1 + VALUE2)
1   7
2   16

awk '{print $(NF-1)}'

Should work

Another way using template reference variable and ViewChild, as proposed by Frelseren:

import { ViewChild } from '@angular/core';

@Component({
  selector: 'my-app',
  template: `
    <div>
      <input type="file" #fileInput/>
    </div>
  `
})  
export class AppComponent {
  @ViewChild("fileInput") fileInputVariable: any;
  randomMethod() {
    const files = this.fileInputVariable.nativeElement.files;
    console.log(files);
  }
}

Also see https://stackoverflow.com/a/40165524/4361955

Well i am trying to open a .vbs within a batch file without having to click open but the answer to this question is ...

SET APPDATA=%CD%

start (your file here without the brackets with a .vbs if it is a vbd file)

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    imageDetail = (ImageView) findViewById(R.id.imageView1);
    imageDetail.setOnTouchListener(new View.OnTouchListener() {

        @Override
        public boolean onTouch(View v, MotionEvent event) {
            ImageView view = (ImageView) v;
            System.out.println("matrix=" + savedMatrix.toString());
            switch (event.getAction() & MotionEvent.ACTION_MASK) {
                case MotionEvent.ACTION_DOWN:
                    savedMatrix.set(matrix);
                    startPoint.set(event.getX(), event.getY());
                    mode = DRAG;
                    break;
                case MotionEvent.ACTION_POINTER_DOWN:
                    oldDist = spacing(event);
                    if (oldDist > 10f) {
                        savedMatrix.set(matrix);
                        midPoint(midPoint, event);
                        mode = ZOOM;
                    }
                    break;
                case MotionEvent.ACTION_UP:
                case MotionEvent.ACTION_POINTER_UP:
                    mode = NONE;
                    break;
                case MotionEvent.ACTION_MOVE:
                    if (mode == DRAG) {
                        matrix.set(savedMatrix);
                        matrix.postTranslate(event.getX() - startPoint.x, event.getY() - startPoint.y);
                    } else if (mode == ZOOM) {
                        float newDist = spacing(event);
                        if (newDist > 10f) {
                            matrix.set(savedMatrix);
                            float scale = newDist / oldDist;
                            matrix.postScale(scale, scale, midPoint.x, midPoint.y);
                        }
                    }
                    break;
            }
            view.setImageMatrix(matrix);
            return true;

        }

        @SuppressLint("FloatMath")
        private float spacing(MotionEvent event) {
            float x = event.getX(0) - event.getX(1);
            float y = event.getY(0) - event.getY(1);
            return FloatMath.sqrt(x * x + y * y);
        }

        private void midPoint(PointF point, MotionEvent event) {
            float x = event.getX(0) + event.getX(1);
            float y = event.getY(0) + event.getY(1);
            point.set(x / 2, y / 2);
        }
    });
}

and drawable folder should have bticn image file. perfectly works :)

There is no automated uninstaller.

You have to remove Eclipse manually. At least Eclipse does not write anything in the system registry, so deleting some directories and files is enough.

Note: I use Unix style paths in this answer but the locations should be the same on Windows or Unix systems, so ~ refers to the user home directory even on Windows.

Why is there no uninstaller?

According to this discussion about uninstalling Eclipse, the reasoning for not providing an uninstaller is that the Eclipse installer is supposed to just automate a few tasks that in the past had to be done manually (like downloading and extracting Eclipse and adding shortcuts), so they also can be undone manually. There is no entry in "Programs and Features" because the installer does not register anything in the system registry.

How to quickly uninstall Eclipse

Just delete the Eclipse directory and any desktop and start menu shortcuts and be done with it, if you don't mind a few leftover files.

In my opinion this is generally enough and I would stop here, because multiple Eclipse installations can share some files and you don't accidentally want to delete those shared files. You also keep all your projects.

How to completely uninstall Eclipse

If you really want to remove Eclipse without leaving any traces, you have to manually delete

• all desktop and start menu shortcuts
• the installation directory (e.g. ~/eclipse/photon/)
• the p2 bundle pool (which is often shared with other eclipse installations)

The installer has a "Bundle Pools" menu entry which lists the locations of all bundle pools. If you have other Eclipse installations on your system you can use the "Cleanup Agent" to clean up unused bundles. If you don't have any other Eclipse installations you can delete the whole bundle pool directory instead (by default ~/p2/).

If you want to completely remove the Eclipse installer too, delete the installer's executable and the ~/.eclipse/ directory.

Depending on what kind of work you did with Eclipse, there can be more directories that you may want to delete. If you used Maven, then ~/.m2/ contains the Maven cache and settings (shared with Maven CLI and other IDEs). If you develop Eclipse plugins, then there might be JUnit workspaces from test runs, next to you Eclipse workspace. Likewise other build tools and development environments used in Eclipse could have created similar directories.

How to delete all projects

If you want to delete your projects and workspace metadata, you have to delete your workspace(s). The default workspace location is ´~/workspace/´. You can also search for the .metadata directory to get all Eclipse workspaces on your machine.

If you are working with Git projects, these are generally not saved in the workspace but in the ~/git/ directory.

You need to install some packages such as Unlocker, GuestOSx, etc.

I discovered that if I have an image and some text inside a div, then I can use text-align:center to align the text and the image in one swoop.

HTML:

    <div class="picture-group">
        <h2 class="picture-title">Picture #1</h2>
        <img src="http://lorempixel.com/99/100/" alt="" class="picture-img" />
        <p class="picture-caption">Lorem ipsum dolor sit amet, consectetur adipisicing elit. Temporibus sapiente fuga, quia?</p>
    </div>

CSS:

.picture-group {
  border: 1px solid black;
  width: 25%;
  float: left;
  height: 300px;
  #overflow:scroll;
  padding: 5px;
  text-align:center;
}

CodePen: https://codepen.io/artforlife/pen/MoBzrL?editors=1100

I solved my same problem like this way, you need to follow 2 simple step. I'm AndroidX user so for me, first I implement this dependencies in build.gradle file in my project in dependencies section.

implementation 'androidx.multidex:multidex:2.0.1'

dependencies {
//for multidex
implementation 'androidx.multidex:multidex:2.0.1'

}

after add this dependencies in your build.gradle file then sync your project again

Now add in the "defaultConfig" section:

multiDexEnabled true

defaultConfig {
    applicationId "com.papel.helper"
    minSdkVersion 16
    targetSdkVersion 28
    versionCode 1
    versionName "1.0"
    testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"

    multiDexEnabled true
  
}

Now Rebuild your project again and Run :)

to allow letters ans spaces

jQuery.validator.addMethod("lettersonly", function(value, element) {
return this.optional(element) || /^[a-z\s]+$/i.test(value);
}, "Only alphabetical characters");

$('#yourform').validate({
        rules: {
            name_field: {
                lettersonly: true
            }
        }
    });

It has been almost 8 years since the question was asked, but I will venture an answer not previously given. The OP said this doesn't work:

action="javascript:simpleCart.checkout()"

And the OP said that this code continued to fail despite trying all the good advice he got. So I will venture a guess. The action is calling checkout() as a static method of the simpleCart class; but maybe checkout() is actually an instance member, and not static. It depends how he defined checkout().

By the way, simpleCart is presumably a class name, and by convention class names have an initial capital letter, so let's use that convention, here. Let's use the name SimpleCart.

Here is some sample code that illustrates defining checkout() as an instance member. This was the correct way to do it, prior to ECMA-6:

function SimpleCart() {
    ...
}
SimpleCart.prototype.checkout = function() { ... };

Many people have used a different technique, as illustrated in the following. This was popular, and it worked, but I advocate against it, because instances are supposed to be defined on the prototype, just once, while the following technique defines the member on this and does so repeatedly, with every instantiation.

function SimpleCart() {
    ...
    this.checkout = function() { ... };
}

And here is an instance definition in ECMA-6, using an official class:

class SimpleCart {
    constructor() { ... }
    ...
    checkout()    { ... }
}

Compare to a static definition in ECMA-6. The difference is just one word:

class SimpleCart {
    constructor() { ... }
    ...
    static checkout()    { ... }
}

And here is a static definition the old way, pre-ECMA-6. Note that the checkout() method is defined outside of the function. It is a member of the function object, not the prototype object, and that's what makes it static.

function SimpleCart() {
    ...
}
SimpleCart.checkout = function() { ... };

Because of the way it is defined, a static function will have a different concept of what the keyword this references. Note that instance member functions are called using the this keyword:

this.checkout();

Static member functions are called using the class name:

SimpleCart.checkout();

The problem is that the OP wants to put the call into HTML, where it will be in global scope. He can't use the keyword this because this would refer to the global scope (which is window).

action="javascript:this.checkout()" // not as intended
action="javascript:window.checkout()" // same thing

There is no easy way to use an instance member function in HTML. You can do stuff in combination with JavaScript, creating a registry in the static scope of the Class, and then calling a surrogate static method, while passing an argument to that surrogate that gives the index into the registry of your instance, and then having the surrogate call the actual instance member function. Something like this:

// In Javascript:
SimpleCart.registry[1234] = new SimpleCart();

// In HTML
action="javascript:SimpleCart.checkout(1234);"

// In Javascript
SimpleCart.checkout = function(myIndex) {
    var myThis = SimpleCart.registry[myIndex];
    myThis.checkout();
}

You could also store the index as an attribute on the element.

But usually it is easier to just do nothing in HTML and do everything in JavaScript with .addEventListener() and use the .bind() capability.

You can try something like this :

    String variable = ""; #write a string name

    StringBuffer rev = new StringBuffer(variable).reverse(); 

    String strRev = rev.toString(); 

    if(variable.equalsIgnoreCase(strRev)) # Check the condition

fixed position is a bit tricky (indeed impossible), but position: sticky is doing the trick beautifully:

<div class='container'>
  <header>This is the header</header>
  <section>
    ... long lorem ipsum
  </section>
</div>

body {
  text-align: center;  
}

.container {
  text-align: left;
  max-width: 30%;
  margin: 0 auto;
}


header {
  line-height: 2rem;
  outline: 1px solid red;
  background: #fff;
  padding: 1rem;

  position: sticky;
  top: 0;
}

see the codepen sample

I would rather use Matchers.<byte[]>any(). This worked for me.

As of year 2020, JetBrains suggests to commit the .idea folder.
The JetBrains IDEs (webstorm, intellij, android studio, pycharm, clion, etc.) automatically add that folder to your git repository (if there's one).
Inside the folder .idea, has been already created a .gitignore, updated by the IDE itself to avoid to commit user related settings that may contains privacy/password data.

It is safe (and usually useful) to commit the .idea folder.

Maven version 3.2.1 added this feature, you can use the -pl switch (shortcut for --projects list) with ! or - (source) to exclude certain submodules.

mvn -pl '!submodule-to-exclude' install
mvn -pl -submodule-to-exclude install

Be careful in bash the character ! is a special character, so you either have to single quote it (like I did) or escape it with the backslash character.

The syntax to exclude multiple module is the same as the inclusion

mvn -pl '!submodule1,!submodule2' install
mvn -pl -submodule1,-submodule2 install

EDIT Windows does not seem to like the single quotes, but it is necessary in bash ; in Windows, use double quotes (thanks @awilkinson)

mvn -pl "!submodule1,!submodule2" install

Directly from the docs:

$comma_separated = implode(",", $array);

I had a similar issue, but it was related to Hibernate's bi-directional relationships. I wanted to show one side of the relationship and programmatically ignore the other, depending on what view I was dealing with. If you can't do that, you end up with nasty StackOverflowExceptions. For instance, if I had these objects

public class A{
  Long id;
  String name;
  List<B> children;
}

public class B{
  Long id;
  A parent;
}

I would want to programmatically ignore the parent field in B if I were looking at A, and ignore the children field in A if I were looking at B.

I started off using mixins to do this, but that very quickly becomes horrible; you have so many useless classes laying around that exist solely to format data. I ended up writing my own serializer to handle this in a cleaner way: https://github.com/monitorjbl/json-view.

It allows you programmatically specify what fields to ignore:

ObjectMapper mapper = new ObjectMapper();
SimpleModule module = new SimpleModule();
module.addSerializer(JsonView.class, new JsonViewSerializer());
mapper.registerModule(module);

List<A> list = getListOfA();
String json = mapper.writeValueAsString(JsonView.with(list)
    .onClass(B.class, match()
        .exclude("parent")));

It also lets you easily specify very simplified views through wildcard matchers:

String json = mapper.writeValueAsString(JsonView.with(list)
    .onClass(A.class, match()
        .exclude("*")
         .include("id", "name")));

In my original case, the need for simple views like this was to show the bare minimum about the parent/child, but it also became useful for our role-based security. Less privileged views of objects needed to return less information about the object.

All of this comes from the serializer, but I was using Spring MVC in my app. To get it to properly handle these cases, I wrote an integration that you can drop in to existing Spring controller classes:

@Controller
public class JsonController {
  private JsonResult json = JsonResult.instance();
  @Autowired
  private TestObjectService service;

  @RequestMapping(method = RequestMethod.GET, value = "/bean")
  @ResponseBody
  public List<TestObject> getTestObject() {
    List<TestObject> list = service.list();

    return json.use(JsonView.with(list)
        .onClass(TestObject.class, Match.match()
            .exclude("int1")
            .include("ignoredDirect")))
        .returnValue();
  }
}

Both are available on Maven Central. I hope it helps someone else out there, this is a particularly ugly problem with Jackson that didn't have a good solution for my case.

No words just running code

// Thread class
public class MyThread extends Thread {

    String result = null;

    public MyThread(String name) {
        super(name);
    }

    public void run() {
        for (int i = 0; i < 1000; i++) {

            System.out.println("Hello from " + this.getName());
        }
        result = "Bye from " + this.getName();
    }
}

Main Class

public class JoinRND {
    public static void main(String[] args) {

        System.out.println("Show time");
        // Creating threads
        MyThread m1 = new MyThread("Thread M1");
        MyThread m2 = new MyThread("Thread M2");
        MyThread m3 = new MyThread("Thread M3");

        // Starting out Threads
        m1.start();
        m2.start();
        m3.start();
        // Just checking current value of thread class variable
        System.out.println("M1 before: " + m1.result);
        System.out.println("M2 before: " + m2.result);
        System.out.println("M3 before: " + m3.result);
        // After starting all threads main is performing its own logic in
        // parallel to other threads
        for (int i = 0; i < 1000; i++) {

            System.out.println("Hello from Main");
        }

        try {

            System.out
                    .println("Main is waiting for other threads to get there task completed");
            m1.join();
            m2.join();
            m3.join();
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        System.out.println("M1 after" + m1.result);
        System.out.println("M2 after" + m2.result);
        System.out.println("M3 after" + m3.result);

        System.out.println("Show over");
    }
}

In Chart.js version 2.0 this is possible:

options = {
  scales: {
    yAxes: [{
      scaleLabel: {
        display: true,
        labelString: 'probability'
      }
    }]
  }
}

See axes labelling documentation for more details.

I have a solution to a problem that may also apply to you. My database was in a state where a DROP TABLE failed because it couldn't find the table... but a CREATE TABLE also failed because MySQL thought the table existed. (This state could easily mess with your IF NOT EXISTS clause).

I eventually found this solution:

sudo mysqladmin flush-tables

For me, without the sudo, I got the following error:

mysqladmin: refresh failed; error: 'Access denied; you need the RELOAD privilege for this operation'

(Running on OS X 10.6)

To be quite honest, regular expressions are not the best idea for this type of parsing. The regular expression you posted will probably work great for simple cases, but if things get more complex you are going to have huge problems (same reason why you cant reliably parse HTML with regular expressions). I know you probably don't want to hear this, I know I didn't when I asked the same type of questions, but string parsing became WAY more reliable for me after I stopped trying to use regular expressions for everything.

jTopas is an AWESOME tokenizer that makes it quite easy to write parsers by hand (I STRONGLY suggest jtopas over the standard java scanner/etc.. libraries). If you want to see jtopas in action, here are some parsers I wrote using jTopas to parse this type of file

If you are parsing XML files, you should be using an xml parser library. Dont do it youself unless you are just doing it for fun, there are plently of proven options out there

Here,i have a simplest code.

url=url.split(".")[0]

Your class needs to extend from ActionBarActivity, rather than a plain Activity in order to use the getSupport*() methods.

Update [2015/04/23]: With the release of Android Support Library 22.1, you should now extend AppCompatActivity. Also, you no longer have to extend ActionBarActivity or AppCompatActivity, as you can now incorporate an AppCompatDelegate instance in any activity.

As an addition to Jakub's answer, if you plan to use JavaConfig, you can also autowire that way:

import com.google.common.collect.Lists;

import java.util.List;

import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Bean;

<...>

@Configuration
public class MyConfiguration {

    @Bean
    public List<Stage> stages(final Stage1 stage1, final Stage2 stage2) {
        return Lists.newArrayList(stage1, stage2);
    }
}

Since you should focus on usability and generalities in CSS, rather than use an id to point to a specific layout element (which results in huge or multiple css files) you should probably instead use a true class in your linked .css file:

.hidden {
visibility: hidden;
display: none;
}

or for the minimalist:

.hidden {
display: none;
}

Now you can simply apply it via:

<div class="hidden"> content </div>

Runnable is often used to provide the code that a thread should run, but Runnable itself has nothing to do with threads. It's just an object with a run() method.

In Android, the Handler class can be used to ask the framework to run some code later on the same thread, rather than on a different one. Runnable is used to provide the code that should run later.

You have to install Python and add it to PATH on Windows. After that you can try:

python `C:/pathToFolder/prog.py`

or go to the files directory and execute:

python prog.py

Use MyISAM for very unimportant data or if you really need those minimal performance advantages. The read performance is not better in every case for MyISAM.

I would personally never use MyISAM at all anymore. Choose InnoDB and throw a bit more hardware if you need more performance. Another idea is to look at database systems with more features like PostgreSQL if applicable.

EDIT: For the read-performance, this link shows that innoDB often is actually not slower than MyISAM: https://www.percona.com/blog/2007/01/08/innodb-vs-myisam-vs-falcon-benchmarks-part-1/

Try this code

import java.io.IOException;

public class CLS {
    public static void main(String... arg) throws IOException, InterruptedException {
        new ProcessBuilder("cmd", "/c", "cls").inheritIO().start().waitFor();
    }
}

Now when the Java process is connected to a console, it will clear the console.

this could work for you.

using System.Linq;

DirectoryInfo info = new DirectoryInfo("PATH_TO_DIRECTORY_HERE");
FileInfo[] files = info.GetFiles().OrderBy(p => p.CreationTime).ToArray();
foreach (FileInfo file in files)
{
    // DO Something...
}

You can use the find command to search for a file:

find / -name virtualenvwrapper.sh

This will search all directories from the root for the file.

on ubuntu 12.04 LTS, installing through pip, it is installed to

/usr/local/bin/virtualenvwrapper.sh

on ubuntu 17.04, installing through pip as a normal user, it is installed to

~/.local/bin/virtualenvwrapper.sh

You add a

float: left;

to the style of the 3 elements and make sure the parent container has

overflow: hidden; position: relative;

this makes sure the floats take up actual space.

<html>
    <head>
        <title>Website Title </title>
    </head>
    <body>
        <div id="the-whole-thing" style="position: relative; overflow: hidden;">
            <div id="leftThing" style="position: relative; width: 25%; background-color: blue; float: left;">
                Left Side Menu
            </div>
            <div id="content" style="position: relative; width: 50%; background-color: green; float: left;">
                Random Content
            </div>
            <div id="rightThing" style="position: relative; width: 25%; background-color: yellow; float: left;">
                Right Side Menu
            </div>
        </div>
    </body>
</html>

Also please note that the width: 100% and height: 100% need to be removed from the container, otherwise the 3rd block will wrap to a 2nd line.

If you want n bits specific then you could first create a bitmask and then AND it with your number to take the desired bits.

Simple function to create mask from bit a to bit b.

unsigned createMask(unsigned a, unsigned b)
{
   unsigned r = 0;
   for (unsigned i=a; i<=b; i++)
       r |= 1 << i;

   return r;
}

You should check that a<=b.

If you want bits 12 to 16 call the function and then simply & (logical AND) r with your number N

r = createMask(12,16);
unsigned result = r & N;

If you want you can shift the result. Hope this helps

Something along these lines, using ABC

import abc

class Shape(object):
    __metaclass__ = abc.ABCMeta

    @abc.abstractmethod
    def method_to_implement(self, input):
        """Method documentation"""
        return

Also read this good tutorial: http://www.doughellmann.com/PyMOTW/abc/

You can also check out zope.interface which was used prior to introduction of ABC in python.

• http://pypi.python.org/pypi/zope.interface
• http://wiki.zope.org/Interfaces/FrontPage

What's the problem , in fact ?

If you really need or want 10 a, b, c, d, e, f, g, h, i, j , there will be no other possibility, at a time or another, to write a and write b and write c.....

If the values are all different, you will be obliged to write for exemple

a = 12
b= 'sun'
c = A() #(where A is a class)
d = range(1,102,5)
e = (line in filehandler if line.rstrip())
f = 0,12358
g = True
h = random.choice
i = re.compile('^(!=  ab).+?<span>')
j = [78,89,90,0]

that is to say defining the "variables" individually.

Or , using another writing, no need to use _ :

a,b,c,d,e,f,g,h,i,j =\
12,'sun',A(),range(1,102,5),\
(line for line in filehandler if line.rstrip()),\
0.12358,True,random.choice,\
re.compile('^(!=  ab).+?<span>'),[78,89,90,0]

or

a,b,c,d,e,f,g,h,i,j =\
(12,'sun',A(),range(1,102,5),
 (line for line in filehandler if line.rstrip()),
 0.12358,True,random.choice,
 re.compile('^(!=  ab).+?<span>'),[78,89,90,0])

.

If some of them must have the same value, is the problem that it's too long to write

a, b, c, d, e, f, g, h, i, j = True, True, True, True, True, False, True ,True , True, True 

?

Then you can write:

a=b=c=d=e=g=h=i=k=j=True
f = False

.

I don't understand what is exactly your problem. If you want to write a code, you're obliged to use the characters required by the writing of the instructions and definitions. What else ?

I wonder if your question isn't the sign that you misunderstand something.

When one writes a = 10 , one don't create a variable in the sense of "chunk of memory whose value can change". This instruction:

• either triggers the creation of an object of type integer and value 10 and the binding of a name 'a' with this object in the current namespace

• or re-assign the name 'a' in the namespace to the object 10 (because 'a' was precedently binded to another object)

I say that because I don't see the utility to define 10 identifiers a,b,c... pointing to False or True. If these values don't change during the execution, why 10 identifiers ? And if they change, why defining the identifiers first ?, they will be created when needed if not priorly defined

Your question appears weird to me

below link will open the whatsapp. Here "0123456789" is the contact of the person you want to communicate with.

href="intent://send/0123456789#Intent;scheme=smsto;package=com.whatsapp;action=android.intent.action.SENDTO;end">

PHP can't parse non-trivial expressions in initializers.

I prefer to work around this by adding code right after definition of the class:

class Foo {
  static $bar;
}
Foo::$bar = array(…);

or

class Foo {
  private static $bar;
  static function init()
  {
    self::$bar = array(…);
  }
}
Foo::init();

PHP 5.6 can handle some expressions now.

/* For Abstract classes */
abstract class Foo{
    private static function bar(){
        static $bar = null;
        if ($bar == null)
            bar = array(...);
        return $bar;
    }
    /* use where necessary */
    self::bar();
}

Yes you can. Sometimes you may get asked this question that what is the purpose doing this? The answer is: sometimes we have to restrict the class from instantiating by its own. In that case, we want user to extend our Abstract class and instantiate child class

I would like to point out that none of the T-SQL on this page will work precisely because none of them join to the syssessions table to get only the current session and therefore could include false positives.

See this for reference: What does it mean to have jobs with a null stop date?

You can also validate this by analyzing the sp_help_jobactivity procedure in msdb.

I realize that this is an old message on SO, but I found this message only partially helpful because of the problem.

SELECT
    job.name, 
    job.job_id, 
    job.originating_server, 
    activity.run_requested_date, 
    DATEDIFF( SECOND, activity.run_requested_date, GETDATE() ) as Elapsed
FROM 
    msdb.dbo.sysjobs_view job
JOIN
    msdb.dbo.sysjobactivity activity
ON 
    job.job_id = activity.job_id
JOIN
    msdb.dbo.syssessions sess
ON
    sess.session_id = activity.session_id
JOIN
(
    SELECT
        MAX( agent_start_date ) AS max_agent_start_date
    FROM
        msdb.dbo.syssessions
) sess_max
ON
    sess.agent_start_date = sess_max.max_agent_start_date
WHERE 
    run_requested_date IS NOT NULL AND stop_execution_date IS NULL

LINKS ARE TRICKY

Consider the tricks that <a href> knows by default but javascript linking won't do for you. On a decent website, anything that wants to behave as a link should implement these features one way or another. Namely:

• Ctrl+Click: opens link in new tab
  You can simulate this by using a window.open() with no position/size argument
• Shift+Click: opens link in new window
  You can simulate this by window.open() with size and/or position specified
• Alt+Click: download target
  People rarely use this one, but if you insist to simulate it, you'll need to write a special script on server side that responds with the proper download headers.
  
  

EASY WAY OUT

Now if you don't want to simulate all that behaviour, I suggest to use <a href> and style it like a button, since the button itself is roughly a shape and a hover effect. I think if it's not semantically important to only have "the button and nothing else", <a href> is the way of the samurai. And if you worry about semantics and readability, you can also replace the button element when your document is ready(). It's clear and safe.

Use /config.php.

Here is my attempt:

Function RegParse(ByVal pattern As String, ByVal html As String)
    Dim regex   As RegExp
    Set regex = New RegExp

    With regex
        .IgnoreCase = True  'ignoring cases while regex engine performs the search.
        .pattern = pattern  'declaring regex pattern.
        .Global = False     'restricting regex to find only first match.

        If .Test(html) Then         'Testing if the pattern matches or not
            mStr = .Execute(html)(0)        '.Execute(html)(0) will provide the String which matches with Regex
            RegParse = .Replace(mStr, "$1") '.Replace function will replace the String with whatever is in the first set of braces - $1.
        Else
            RegParse = "#N/A"
        End If

    End With
End Function

Also:

angular.module('App.filters', [])
    .filter('joinBy', function () {
        return function (input,delimiter) {
            return (input || []).join(delimiter || ',');
        };
    });

And in template:

{{ itemsArray | joinBy:',' }}

You just wrap your query in another one:

SELECT COUNT(*), SUM(Age)
FROM (
    SELECT availables.bookdate AS Count, DATEDIFF(now(),availables.updated_at) as Age
    FROM availables
    INNER JOIN rooms
    ON availables.room_id=rooms.id
    WHERE availables.bookdate BETWEEN '2009-06-25' AND date_add('2009-06-25', INTERVAL 4 DAY) AND rooms.hostel_id = 5094
    GROUP BY availables.bookdate
) AS tmp;

//for update

(from x in dataBase.Customers
         where x.Name == "Test"
         select x).ToList().ForEach(xx => xx.Name="New Name");

//for delete

dataBase.Customers.RemoveAll(x=>x.Name=="Name");

The answer depends on which "command-line script" language you are in.

Cmd

In the old cmd.exe command prompt or in a .bat or .cmd script, you can use the following:

%USERNAME% - Gets just the username.

%USERDOMAIN% - Gets the user's domain.

PowerShell

In the PowerShell command prompt or a .ps1 or .psm1 script, you can use the following:

[System.Security.Principal.WindowsIdentity]::GetCurrent().Name - Gives you the fully qualified username (e.g. Domain\Username). This is also the most secure method because it cannot be overridden by the user like the other $Env variables below.

$Env:Username - Gets just the username.

$Env:UserDomain - Gets the user's domain.

$Env:ComputerName - Gets the name of the computer.

You can use the below syntax -

from FolderName.FileName import Classname

You can't pass a parameter in a @selector().

It looks like you're trying to implement a callback. The best way to do that would be something like this:

[object setCallbackObject:self withSelector:@selector(myMethod:)];

Then in your object's setCallbackObject:withSelector: method: you can call your callback method.

-(void)setCallbackObject:(id)anObject withSelector:(SEL)selector {
    [anObject performSelector:selector];
}

cURL in PHP is a bridge to use command line cURL from the php language

This can be used to merge any number of files specified on the command:

jq -rs 'reduce .[] as $item ({}; . * $item)' file1.json file2.json file3.json ... file10.json

or this for any number of files

jq -rs 'reduce .[] as $item ({}; . * $item)' ./*.json

In order to remove a row from a JTable, you need to remove the target row from the underlying TableModel. If, for instance, your TableModel is an instance of DefaultTableModel, you can remove a row by doing the following:

((DefaultTableModel)myJTable.getModel()).removeRow(rowToRemove);

  List<String> list = new List<String> { "6", "1", "2", "4", "6", "5", "1" };

    var q = from s in list
            group s by s into g
            where g.Count() > 1
            select g.First();

    foreach (var item in q)
    {
        Console.WriteLine(item);

    }

Something like this?

<div onclick="alert('test');">

</div>

df = data.frame(cond=c(rep("x",3),rep("y",3)),rating=c(x,y))

You can encrypt your SQLite database with the SEE addon. This way you prevent unauthorized access/modification.

Quoting SQLite documentation:

The SQLite Encryption Extension (SEE) is an enhanced version of SQLite that encrypts database files using 128-bit or 256-Bit AES to help prevent unauthorized access or modification. The entire database file is encrypted so that to an outside observer, the database file appears to contain white noise. There is nothing that identifies the file as an SQLite database.

You can find more info about this addon in this link.

For Lists you can use

Collections.fill(arrayList, "-")

You'll need to join twice:

SELECT home.*, away.*, g.network, g.date_start 
FROM game AS g
INNER JOIN team AS home
  ON home.importid = g.home
INNER JOIN team AS away
  ON away.importid = g.away
ORDER BY g.date_start DESC 
LIMIT 7

If your Linux system supports it, clock_gettime(CLOCK_MONOTONIC) should be a high resolution timer that is unaffected by system date changes (e.g. NTP daemons).

<a [routerLink]="['../']" [queryParams]="{name: 'ferret'}" [fragment]="nose">Ferret Nose</a>

foo://example.com:8042/over/there?name=ferret#nose
\_/   \______________/\_________/ \_________/ \__/
 |           |            |            |        |
scheme    authority      path        query   fragment

For more info - https://angular.io/guide/router#query-parameters-and-fragments

I hope ls -lah will do the job. Also if you are new to unix environment please go to http://www.tutorialspoint.com/unix/unix-useful-commands.htm

Create your own container:

template <class T>
class statList : public std::list<T>
{
    public:
        statList() : std::list<T>::list() {}
        ~statList() {}
        T mean() {
           return accumulate(begin(),end(),0.0)/size();
        }
        T stddev() {
           T diff_sum = 0;
           T m = mean();
           for(iterator it= begin(); it != end(); ++it)
               diff_sum += ((*it - m)*(*it -m));
           return diff_sum/size();
        }
};

It does have some limitations, but it works beautifully when you know what you are doing.

Here's a LINQ solution which is virtually the same but more scalable:

new[] { "a", "b", "c" }.Any(c => s.Contains(c))

CSS 3

divContainer input[type="text"] {
    width:150px;
}

CSS2 add a class "text" to the text inputs then in your css

.divContainer.text{
    width:150px;
}

I would use Prototype's update method which supports plain text, an HTML snippet or any JavaScript object that defines a toString method.

$("field_name").update("New text");

• Element.update documentation

It's ctrl + . when, for example, you try to type List you need to type < at the end and press ctrl + . for it to work.

It depends what you bound to your ComboBox. If you have bound an object called MyObject, and have, let's say, a property called Name do the following:

MyObject mo = myListBox.SelectedItem as MyObject;
return mo.Name;

By referring to all of the above comments, I have come to a solution.

This works if the Date passed is in ISO format or need to manipulate for other formats.

var isISO = "2018-08-01T18:30:00.000Z";

if (new Date(isISO) !== "Invalid Date" && !isNaN(new Date(isISO))) {
    if(isISO == new Date(isISO).toISOString()) {
        console.log("Valid date");
    } else {
        console.log("Invalid date");
    }
} else {
    console.log("Invalid date");
}

You can play here on JSFiddle.

Range("A1").value = Environ("Username")

This is better than Application.Username, which doesn't always supply the Windows username. Thanks to Kyle for pointing this out.

• Application Username is the name of the User set in Excel > Tools > Options
• Environ("Username") is the name you registered for Windows; see Control Panel >System

If you DELETE the branch after merging it, just be aware that all hyperlinks, URLs, and references of your DELETED branch will be BROKEN.

To get mod_rewrite to work for me in Apache 2.4, I had to add the "Require all granted" line below.

<Directory /var/www>
   # Required if running apache > 2.4
   Require all granted

   RewriteEngine on 
   RewriteRule ^cachebust-([a-z0-9]+)\/(.*) /$2 [L] 
 </Directory>

supposedly a similar requirement exists for Apache 2.2 as well, if you're using that:

<Directory /var/www>
   # Required if running apache 2.2
   Order allow,deny
   Allow from all

   RewriteEngine on 
   RewriteRule ^cachebust-([a-z0-9]+)\/(.*) /$2 [L] 
 </Directory>

Note that an ErrorDocument 404 directive can sometimes override these things as well, so if it's not working try commenting out your ErrorDocument directive and see if it works. The above example can be used to ensure a site isn't served from cache by including a subfolder in the path, though the files reside at the root of the server.

find( sub[, start[, end]])

Return the lowest index in the string where substring sub is found, such that sub is contained in the range [start, end]. Optional arguments start and end are interpreted as in slice notation. Return -1 if sub is not found.

From the docs.

A simple and a good straight-forward example:

<script>
    // This gets the username from the Razor engine and puts it
    // in JavaScript to create a variable I can access from the
    // client side.
    //
    // It's an odd workaraound, but it works.
    @{
        var outScript = "var razorUserName = " + "\"" + @User.Identity.Name + "\"";
    }
    @MvcHtmlString.Create(outScript);
</script>

This creates a script in your page at the location you place the code above which looks like the following:

<script>
    // This gets the username from the Razor engine and puts it
    // in JavaScript to create a variable I can access from
    // client side.
    //
    // It's an odd workaraound, but it works.

    var razorUserName = "daylight";
</script>

Now you have a global JavaScript variable named razorUserName which you can access and use on the client. The Razor engine has obviously extracted the value from @User.Identity.Name (server-side variable) and put it in the code it writes to your script tag.

Now we could also use:

if (Attachment != null  && Attachment.Any())

Any() is often easier to understand in a glance for the developer than checking Length() > 0. Also has very little difference with processing speed.

The other answers here work for something like Math, which is a static object. But they don't work for an instance of an object, such as a date. I found the following to work:

function getMethods(o) {
  return Object.getOwnPropertyNames(Object.getPrototypeOf(o))
    .filter(m => 'function' === typeof o[m])
}
//example: getMethods(new Date()):  [ 'getFullYear', 'setMonth', ... ]

https://jsfiddle.net/3xrsead0/

This won't work for something like the original question (Math), so pick your solution based on your needs. I'm posting this here because Google sent me to this question but I was wanting to know how to do this for instances of objects.

Maybe this small Typescript code example will help.

private getAccount(id: Id) : Account {
    let account = Account.empty();
    this.repository.get(id)
        .then(res => account = res)
        .catch(e => Notices.results(e));
    return account;
}

Here the repository.get(id) returns a Promise<Account>. I assign it to the variable account within the then statement.

Not every language supports reflection, but the principles are usually the same in languages that support it.

Reflection is the ability to "reflect" on the structure of your program. Or more concrete. To look at the objects and classes you have and programmatically get back information on the methods, fields, and interfaces they implement. You can also look at things like annotations.

It's useful in a lot of situations. Everywhere you want to be able to dynamically plug in classes into your code. Lots of object relational mappers use reflection to be able to instantiate objects from databases without knowing in advance what objects they're going to use. Plug-in architectures is another place where reflection is useful. Being able to dynamically load code and determine if there are types there that implement the right interface to use as a plugin is important in those situations.

AngularJS has some methods called JQlite so we can use it. see link

Select the element in DOM is

angular.element( document.querySelector( '#div1' ) );

add the class like .addClass('alpha');

So finally

var myEl = angular.element( document.querySelector( '#div1' ) );
myEl.addClass('alpha');

I had this issue, as well as some other issues with Brewed Python on OS X v10.9 (Mavericks).

sudo pip install --upgrade setuptools

didn't work for me, and I think my setuptools/distribute setup was botched.

I finally got it to work by running

sudo easy_install -U setuptools

You can try the following code:

background-image:url('url of your image') 10px 10px no-repeat

I'm guessing from your last question, asked 20 minutes before this one, that you are trying to parse (read and convert) the XML found through using GeoNames' FindNearestAddress.

If your XML is in a string variable called txt and looks like this:

<address>
  <street>Roble Ave</street>
  <mtfcc>S1400</mtfcc>
  <streetNumber>649</streetNumber>
  <lat>37.45127</lat>
  <lng>-122.18032</lng>
  <distance>0.04</distance>
  <postalcode>94025</postalcode>
  <placename>Menlo Park</placename>
  <adminCode2>081</adminCode2>
  <adminName2>San Mateo</adminName2>
  <adminCode1>CA</adminCode1>
  <adminName1>California</adminName1>
  <countryCode>US</countryCode>
</address>

Then you can parse the XML with Javascript DOM like this:

if (window.DOMParser)
{
    parser = new DOMParser();
    xmlDoc = parser.parseFromString(txt, "text/xml");
}
else // Internet Explorer
{
    xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
    xmlDoc.async = false;
    xmlDoc.loadXML(txt);
}

And get specific values from the nodes like this:

//Gets house address number
xmlDoc.getElementsByTagName("streetNumber")[0].childNodes[0].nodeValue;

//Gets Street name
xmlDoc.getElementsByTagName("street")[0].childNodes[0].nodeValue;

//Gets Postal Code
xmlDoc.getElementsByTagName("postalcode")[0].childNodes[0].nodeValue;

JSFiddle

Feb. 2019 edit:

In response to @gaugeinvariante's concerns about xml with Namespace prefixes. Should you have a need to parse xml with Namespace prefixes, everything should work almost identically:

NOTE: this will only work in browsers that support xml namespace prefixes such as Microsoft Edge

// XML with namespace prefixes 's', 'sn', and 'p' in a variable called txt_x000D_
txt = `_x000D_
<address xmlns:p='example.com/postal' xmlns:s='example.com/street' xmlns:sn='example.com/streetNum'>_x000D_
  <s:street>Roble Ave</s:street>_x000D_
  <sn:streetNumber>649</sn:streetNumber>_x000D_
  <p:postalcode>94025</p:postalcode>_x000D_
</address>`;_x000D_
_x000D_
//Everything else the same_x000D_
if (window.DOMParser)_x000D_
{_x000D_
    parser = new DOMParser();_x000D_
    xmlDoc = parser.parseFromString(txt, "text/xml");_x000D_
}_x000D_
else // Internet Explorer_x000D_
{_x000D_
    xmlDoc = new ActiveXObject("Microsoft.XMLDOM");_x000D_
    xmlDoc.async = false;_x000D_
    xmlDoc.loadXML(txt);_x000D_
}_x000D_
_x000D_
//The prefix should not be included when you request the xml namespace_x000D_
//Gets "streetNumber" (note there is no prefix of "sn"_x000D_
console.log(xmlDoc.getElementsByTagName("streetNumber")[0].childNodes[0].nodeValue);_x000D_
_x000D_
//Gets Street name_x000D_
console.log(xmlDoc.getElementsByTagName("street")[0].childNodes[0].nodeValue);_x000D_
_x000D_
//Gets Postal Code_x000D_
console.log(xmlDoc.getElementsByTagName("postalcode")[0].childNodes[0].nodeValue);

Have a look

x   y      A    B   C   D   E   F   G   H   I   J   K   L   M   N

·   ·      T    ·   T   ·   T   ·   T   ·   T   ·   T   ·   T   ·
·   T      ·    T   T   ·   ·   T   T   ·   ·   T   T   ·   ·   T
T   ·      ·    ·   ·   T   T   T   T   ·   ·   ·   ·   T   T   T
T   T      ·    ·   ·   ·   ·   ·   ·   T   T   T   T   T   T   T

A) !(x OR y)    
B) !(x) AND y   
C) !(x) 
D) x AND !(y)   
E) !(y) 
F) x XOR y  
G) !(x AND y)   
H) x AND y  
I) !(x XOR y)   
J) y    
K) !(x) OR y    
L) x    
M) x OR !(y)    
N) x OR y

The thing I use is this:

In your template an alert area

<div id="alert-area"></div>

Then an jQuery function for showing an alert

function newAlert (type, message) {
    $("#alert-area").append($("<div class='alert-message " + type + " fade in' data-alert><p> " + message + " </p></div>"));
    $(".alert-message").delay(2000).fadeOut("slow", function () { $(this).remove(); });
}
newAlert('success', 'Oh yeah!');

Using prototypes:

function Box(color) // Constructor
{
    this.color = color;
}

Box.prototype.getColor = function()
{
    return this.color;
};

Hiding "color" (somewhat resembles a private member variable):

function Box(col)
{
   var color = col;

   this.getColor = function()
   {
       return color;
   };
}

Usage:

var blueBox = new Box("blue");
alert(blueBox.getColor()); // will alert blue

var greenBox = new Box("green");
alert(greenBox.getColor()); // will alert green

I wanted a solution to copy files modified after a certain date and time which mean't I need to use Get-ChildItem piped through a filter. Below is what I came up with:

$SourceFolder = "C:\Users\RCoode\Documents\Visual Studio 2010\Projects\MyProject"
$ArchiveFolder = "J:\Temp\Robin\Deploy\MyProject"
$ChangesStarted = New-Object System.DateTime(2013,10,16,11,0,0)
$IncludeFiles = ("*.vb","*.cs","*.aspx","*.js","*.css")

Get-ChildItem $SourceFolder -Recurse -Include $IncludeFiles | Where-Object {$_.LastWriteTime -gt $ChangesStarted} | ForEach-Object {
    $PathArray = $_.FullName.Replace($SourceFolder,"").ToString().Split('\') 

    $Folder = $ArchiveFolder

    for ($i=1; $i -lt $PathArray.length-1; $i++) {
        $Folder += "\" + $PathArray[$i]
        if (!(Test-Path $Folder)) {
            New-Item -ItemType directory -Path $Folder
        }
    }   
    $NewPath = Join-Path $ArchiveFolder $_.FullName.Replace($SourceFolder,"")

    Copy-Item $_.FullName -Destination $NewPath  
}

It depends on your Linux distibution and your preference of editors etc. but I would recommend to start with Kile (a KDE app) as it is easy to learn and installing it should install most of the needed packages for LaTex and PDF generation. Just have a look at the screenshots.

loadXMLDoc JS function should return false, otherwise it will result in postback.

you may scp it from your redis machine if you have one, its just single binary. Or copy with nc if private network (this method is insecure):

redisclient: nc -l 8888 > /usr/local/bin/redis-cli
redisserver: cat /usr/local/bin/redis-cli | nc redisclient 8888

I received this error when I was parsing dict with nested for:

cats = {'Tom': {'color': 'white', 'weight': 8}, 'Klakier': {'color': 'black', 'weight': 10}}
cat_attr = {}
for cat in cats:
    for attr in cat:
        print(cats[cat][attr])

Traceback:

Traceback (most recent call last):
      File "<input>", line 3, in <module>
    KeyError: 'K'

Because in second loop should be cats[cat] instead just cat (what is just a key)

So:

cats = {'Tom': {'color': 'white', 'weight': 8}, 'Klakier': {'color': 'black', 'weight': 10}}
cat_attr = {}
for cat in cats:
    for attr in cats[cat]:
        print(cats[cat][attr])

Gives

black
10
white
8

Use intptr_t and uintptr_t.

To ensure it is defined in a portable way, you can use code like this:

#if defined(__BORLANDC__)
    typedef unsigned char uint8_t;
    typedef __int64 int64_t;
    typedef unsigned long uintptr_t;
#elif defined(_MSC_VER)
    typedef unsigned char uint8_t;
    typedef __int64 int64_t;
#else
    #include <stdint.h>
#endif

Just place that in some .h file and include wherever you need it.

Alternatively, you can download Microsoft’s version of the stdint.h file from here or use a portable one from here.

If it's a DNS problem, you could try:

• ipconfig /flushdns
• ipconfig /registerdns

If this doesn't fix it, you could try editing the hosts file located here:

C:\Windows\System32\drivers\etc\hosts

And ensure that this line (and no other line referencing localhost) is in there:

127.0.0.1 localhost

I refactored @Liam's answer. I put it in a class with static methods, I made its functions receive an element instead of an #id, and some other small tweaks.

This code is particularly good for fixing the cursor in a rich text box that you might be making with <div contenteditable="true">. I was stuck on this for several days before arriving at the below code.

edit: His answer and this answer have a bug involving hitting enter. Since enter doesn't count as a character, the cursor position gets messed up after hitting enter. If I am able to fix the code, I will update my answer.

edit2: Save yourself a lot of headaches and make sure your <div contenteditable=true> is display: inline-block. This fixes some bugs related to Chrome putting <div> instead of <br> when you press enter.

How To Use

let richText = document.getElementById('rich-text');
let offset = Cursor.getCurrentCursorPosition(richText);
// do stuff to the innerHTML, such as adding/removing <span> tags
Cursor.setCurrentCursorPosition(offset, richText);
richText.focus();

Code

// Credit to Liam (Stack Overflow)
// https://stackoverflow.com/a/41034697/3480193
class Cursor {
    static getCurrentCursorPosition(parentElement) {
        var selection = window.getSelection(),
            charCount = -1,
            node;
        
        if (selection.focusNode) {
            if (Cursor._isChildOf(selection.focusNode, parentElement)) {
                node = selection.focusNode; 
                charCount = selection.focusOffset;
                
                while (node) {
                    if (node === parentElement) {
                        break;
                    }

                    if (node.previousSibling) {
                        node = node.previousSibling;
                        charCount += node.textContent.length;
                    } else {
                        node = node.parentNode;
                        if (node === null) {
                            break;
                        }
                    }
                }
            }
        }
        
        return charCount;
    }
    
    static setCurrentCursorPosition(chars, element) {
        if (chars >= 0) {
            var selection = window.getSelection();
            
            let range = Cursor._createRange(element, { count: chars });

            if (range) {
                range.collapse(false);
                selection.removeAllRanges();
                selection.addRange(range);
            }
        }
    }
    
    static _createRange(node, chars, range) {
        if (!range) {
            range = document.createRange()
            range.selectNode(node);
            range.setStart(node, 0);
        }

        if (chars.count === 0) {
            range.setEnd(node, chars.count);
        } else if (node && chars.count >0) {
            if (node.nodeType === Node.TEXT_NODE) {
                if (node.textContent.length < chars.count) {
                    chars.count -= node.textContent.length;
                } else {
                    range.setEnd(node, chars.count);
                    chars.count = 0;
                }
            } else {
                for (var lp = 0; lp < node.childNodes.length; lp++) {
                    range = Cursor._createRange(node.childNodes[lp], chars, range);

                    if (chars.count === 0) {
                    break;
                    }
                }
            }
        } 

        return range;
    }
    
    static _isChildOf(node, parentElement) {
        while (node !== null) {
            if (node === parentElement) {
                return true;
            }
            node = node.parentNode;
        }

        return false;
    }
}

With Groovy, you can leverage Ant to do:

new AntBuilder().copy( todir:'/path/to/destination/folder' ) {
  fileset( dir:'/path/to/src/folder' )
}

AntBuilder is part of the distribution and the automatic imports list which means it is directly available for any groovy code.

Rails does not use the stdlib's ERB by default, it uses erubis. Sources: this dev's comment, ActionView's gemspec, accepted merge request I did while writing this.

There are behavior differences between them, in particular on how the hyphen operators %- and -% work.

Documentation is scarce, Where is Ruby's ERB format "officially" defined? so what follows are empirical conclusions.

All tests suppose:

require 'erb'
require 'erubis'

When you can use -

• ERB: you must pass - to trim_mode option of ERB.new to use it.
• erubis: enabled by default.

Examples:

begin ERB.new("<%= 'a' -%>\nb").result; rescue SyntaxError ; else raise; end
ERB.new("<%= 'a' -%>\nb"  , nil, '-') .result == 'ab'  or raise
Erubis::Eruby.new("<%= 'a' -%>  \n b").result == 'a b' or raise

What -% does:

• ERB: remove the next character if it is a newline.

• erubis:

  • in <% %> (without =), - is useless because <% %> and <% -%> are the same. <% %> removes the current line if it only contains whitespaces, and does nothing otherwise.

  • in <%= -%> (with =):

    • remove the entire line if it only contains whitespaces
    • else, if there is a non-space before the tag, and only whitesapces after, remove the whitespces that come after
    • else, there is a non-space after the tag: do nothing

Examples:

# Remove
ERB.new("a \nb <% 0 -%>\n c", nil, '-').result == "a \nb  c" or raise

# Don't do anything: not followed by newline, but by space:
ERB.new("a\n<% 0 -%> \nc", nil, '-').result == "a\nb \nc" or raise

# Remove the current line because only whitesapaces:
Erubis::Eruby.new(" <% 0 %> \nb").result == 'b' or raise

# Same as above, thus useless because longer.
Erubis::Eruby.new(" <% 0 -%> \nb").result == 'b' or raise

# Don't do anything because line not empty.
Erubis::Eruby.new("a <% 0 %> \nb").result == "a  \nb" or raise
Erubis::Eruby.new(" <% 0 %> a\nb").result == "  a\nb" or raise
Erubis::Eruby.new(" <% 0 -%> a\nb").result == "  a\nb" or raise

# Don't remove the current line because of `=`:
Erubis::Eruby.new(" <%= 0 %> \nb").result == " 0 \nb" or raise

# Remove the current line even with `=`:
Erubis::Eruby.new(" <%= 0 -%> \nb").result == " 0b"   or raise

# Remove forward only because of `-` and non space before:
Erubis::Eruby.new("a <%= 0 -%> \nb").result == "a 0b"   or raise

# Don't do anything because non-whitespace forward:
Erubis::Eruby.new(" <%= 0 -%> a\nb").result == " 0 a\nb"   or raise

What %- does:

• ERB: remove whitespaces before tag and after previous newlines, but only if there are only whitespaces before.

• erubis: useless because <%- %> is the same as <% %> (without =), and this cannot be used with = which is the only case where -% can be useful. So never use this.

Examples:

# Remove
ERB.new("a \n  <%- 0 %> b\n c", nil, '-').result == "a \n b\n c" or raise

# b is not whitespace: do nothing:
ERB.new("a \nb  <%- 0 %> c\n d", nil, '-').result == "a \nb   c\n d" or raise

What %- and -% do together

The exact combination of both effects separately.

It refers to the element in the DOM to which the onclick attribute belongs:

<script type="text/javascript"
        src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js">
</script>
<script type="text/javascript">
function func(e) {
  $(e).text('there');
}
</script>
<a onclick="func(this)">here</a>

(This example uses jQuery.)

Starting with .Net 4.5 you can use Task.Run to simply start an action:

void Foo(string args){}
...
Task.Run(() => Foo("bar"));

Task.Run vs Task.Factory.StartNew

A simple rewrite of @Landons MY_Loader, to include multiple files for the body, e.i. page unique sidebars...

<?php

class MY_Loader extends CI_Loader {
    public function template($template_name, $vars = array(), $return = FALSE)
    {
        $content  = $this->view('frontend/templates/header', $vars, $return);

        if(is_array($template_name)) { //return all values in contents

            foreach($template_name as $file_to_load) { 
                  $content .= $this->view('frontend/'.$file_to_load, $vars, $return);
            }
        }
        else {             
            $content .= $this->view('frontend/'.$template_name, $vars, $return);
        }

        $content .= $this->view('frontend/templates/footer', $vars, $return);

        if ($return)
        {
            return $content;
        }
    }
}

This works both ways...

Including one file to template:

$data['moo'] = 'my data'];
$this->load->template('home', $data);

Include multiple files to template:

$data['catalog'] = 'catalog load 1';
$data['sidebar'] = 'sidebar load 2';           
$load = array('catalog/catalog', 'catalog/sidebar');        
$this->load->template($load, $data);

to Set Variable:

item Assignment method using key:

import os    
os.environ['DEBUSSY'] = '1'  #Environ Variable must be string not Int

to get or to check whether its existed or not,

since os.environ is an instance you can try object way.

Method 1:

os.environ.get('DEBUSSY') # this is error free method if not will return None by default

will get '1' as return value

Method 2:

os.environ['DEBUSSY'] # will throw an key error if not found!

Method 3:

'DEBUSSY' in os.environ  # will return Boolean True/False

Method 4:

os.environ.has_key('DEBUSSY') #last 2 methods are Boolean Return so can use for conditional statements

Indeed, there is no defined standard. To support that information, have a look at wikipedia, in the Query String chapter. There is the following comment:

While there is no definitive standard, most web frameworks allow multiple values to be associated with a single field.[3][4]

Furthermore, when you take a look at the RFC 3986, in section 3.4 Query, there is no definition for parameters with multiple values.

Most applications use the first option you have shown: http://server/action?id=a&id=b. To support that information, take a look at this Stackoverflow link, and this MSDN link regarding ASP.NET applications, which use the same standard for parameters with multiple values.

However, since you are developing the APIs, I suggest you to do what is the easiest for you, since the caller of the API will not have much trouble creating the query string.

With the cli I don't know if it's a remove command but you can remove it from package.json and stop using it in your code.If you reinstall the packages you wilk not have it any more

AndroChef Java Decompiler produces very good code that you can use directly in your projects...

No. JavaScript is a client-side technology and cannot do anything on the server. You could however use AJAX to call a server-side script (e.g. PHP) which could return the information you need.

If you want to use AJAX, the easiest way will be to utilise jQuery:

$.post("someScript.php", function(data) {
   console.log(data); //"data" contains whatever someScript.php returned
});

You might also try giving the full path to the binary you're trying to run. That solved my problem when trying to use ImageMagick.

Asked and answered before...

Books on line says "COUNT ( { [ [ ALL | DISTINCT ] expression ] | * } )"

"1" is a non-null expression so it's the same as COUNT(*). The optimiser recognises it as trivial so gives the same plan. A PK is unique and non-null (in SQL Server at least) so COUNT(PK) = COUNT(*)

This is a similar myth to EXISTS (SELECT * ... or EXISTS (SELECT 1 ...

And see the ANSI 92 spec, section 6.5, General Rules, case 1

        a) If COUNT(*) is specified, then the result is the cardinality
          of T.

        b) Otherwise, let TX be the single-column table that is the
          result of applying the <value expression> to each row of T
          and eliminating null values. If one or more null values are
          eliminated, then a completion condition is raised: warning-
          null value eliminated in set function.

Detach is unnecessary.

The answer (as of 2013) is simple:

$('#parentNode').append($('#childNode'));

According to http://api.jquery.com/append/

You can also select an element on the page and insert it into another:

$('.container').append($('h2'));

If an element selected this way is inserted into a single location elsewhere in the DOM, it will be moved into the target (not cloned).

You do it by setting a OnKeyListener on your EditText.

Here is a sample from my own code. I have an EditText named addCourseText, which will call the function addCourseFromTextBox when either the enter key or the d-pad is clicked.

addCourseText = (EditText) findViewById(R.id.clEtAddCourse);
addCourseText.setOnKeyListener(new OnKeyListener()
{
    public boolean onKey(View v, int keyCode, KeyEvent event)
    {
        if (event.getAction() == KeyEvent.ACTION_DOWN)
        {
            switch (keyCode)
            {
                case KeyEvent.KEYCODE_DPAD_CENTER:
                case KeyEvent.KEYCODE_ENTER:
                    addCourseFromTextBox();
                    return true;
                default:
                    break;
            }
        }
        return false;
    }
});

If you always want to reload your module, you could add this function:

function requireUncached(module) {
    delete require.cache[require.resolve(module)];
    return require(module);
}

and then use requireUncached('./myModule') instead of require.

Every method (other than a constructor) must have a return type.

public double diameter(){...

I would use REGEX with .replace like this:

window.location.href = window.location.href.replace( /[\?#].*|$/, "?single" );

var_dump() will show you the type of the thing as well as what's in it.

So you'll get => (string)"var" Example is here.

print_r() will just output the content.

Would output => "var" Example is here.

I realize this is an old question, but it took me several hours to find a good solution and thought I'd pass on what I learned here and save someone else the trouble. Try, for example,

SELECT * FROM some_table WHERE id_column = ANY(@id_list)

where @id_list is bound to an int[] parameter by way of

command.Parameters.Add("@id_list", NpgsqlDbType.Array | NpgsqlDbType.Integer).Value = my_id_list;

where command is a NpgsqlCommand (using C# and Npgsql in Visual Studio).

They way I did it was by selecting all of the data

select * from myTable and then right-clicking on the result set and chose "Save results as..." a csv file.

Opening the csv file in Notepad++ I saw the LF characters not visible in SQL Server result set.

Here you can check for couple of things.

1. Date formats you are using correctly. You can provide more than one format for DateTime.TryParseExact. Check the complete list of formats, available here.

2. CultureInfo.InvariantCulture which is more likely add problem. So instead of passing a NULL value or setting it to CultureInfo provider = new CultureInfo("en-US"), you may write it like. .

   if (!DateTime.TryParseExact(txtStartDate.Text, formats, 
                   System.Globalization.CultureInfo.InvariantCulture,
                   System.Globalization.DateTimeStyles.None, out startDate))
   {
       //your condition fail code goes here
       return false;
   }
   else
   {
       //success code
   }
   

In spark 2.2 there are two ways to add constant value in a column in DataFrame:

1) Using lit

2) Using typedLit.

The difference between the two is that typedLit can also handle parameterized scala types e.g. List, Seq, and Map

Sample DataFrame:

val df = spark.createDataFrame(Seq((0,"a"),(1,"b"),(2,"c"))).toDF("id", "col1")

+---+----+
| id|col1|
+---+----+
|  0|   a|
|  1|   b|
+---+----+

1) Using lit: Adding constant string value in new column named newcol:

import org.apache.spark.sql.functions.lit
val newdf = df.withColumn("newcol",lit("myval"))

Result:

+---+----+------+
| id|col1|newcol|
+---+----+------+
|  0|   a| myval|
|  1|   b| myval|
+---+----+------+

2) Using typedLit:

import org.apache.spark.sql.functions.typedLit
df.withColumn("newcol", typedLit(("sample", 10, .044)))

Result:

+---+----+-----------------+
| id|col1|           newcol|
+---+----+-----------------+
|  0|   a|[sample,10,0.044]|
|  1|   b|[sample,10,0.044]|
|  2|   c|[sample,10,0.044]|
+---+----+-----------------+

Adding to Sekar answer

Don't forget to restart your XAMPP Server

Update the accepted answer :

now you need to comment Require local

#
# New XAMPP security concept
#
<LocationMatch "^/(?i:(?:xampp|security|licenses|phpmyadmin|webalizer|server-status|server-info))">
        #Require local
    ErrorDocument 403 /error/XAMPP_FORBIDDEN.html.var

You can use stristr() or strpos(). Both return false if nothing is found.

In your composer.json, you can put:

{
    "require": {
        "vendor/package": "version"
    }
}

then run composer install or composer update from the directory containing composer.json. Sometimes, for me, composer is hinky, so I'll start with composer clear-cache; rm -rf vendor; rm composer.lock before composer install to make sure it's getting fresh stuff.

Of course, as the other answers point out you can run the following from the terminal:

composer require vendor/package:version

And on versioning:
- Composer's official versions article
- Ecosia Search

As of jQuery 1.7, the .live() method is deprecated. Use .on() to attach event handlers. Users of older versions of jQuery should use .delegate() in preference to .live(). Refer: http://api.jquery.com/on/

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

This question may help: How to pass variable by reference in javascript? Read data from ActiveX function which returns more than one value

To summarise, Javascript primitive types are always passed by value, whereas the values inside objects are passed by reference (thanks to commenters for pointing out my oversight). So to get round this, you have to put your integer inside an object:

var myobj = {x:0};_x000D_
_x000D_
function a(obj)_x000D_
{_x000D_
    obj.x++;_x000D_
}_x000D_
_x000D_
a(myobj);_x000D_
alert(myobj.x); // returns 1_x000D_
_x000D_
  

This probably harks from the old VB NOT .Net days when bool.ToString produced True or False.

1. What is the difference between Git and GitHub?

   Git is a version control system; think of it as a series of snapshots (commits) of your code. You see a path of these snapshots, in which order they where created. You can make branches to experiment and come back to snapshots you took.

   GitHub, is a web-page on which you can publish your Git repositories and collaborate with other people.

2. Is Git saving every repository locally (in the user's machine) and in GitHub?

   No, it's only local. You can decide to push (publish) some branches on GitHub.

3. Can you use Git without GitHub? If yes, what would be the benefit for using GitHub?

   Yes, Git runs local if you don't use GitHub. An alternative to using GitHub could be running Git on files hosted on Dropbox, but GitHub is a more streamlined service as it was made especially for Git.

4. How does Git compare to a backup system such as Time Machine?

   It's a different thing, Git lets you track changes and your development process. If you use Git with GitHub, it becomes effectively a backup. However usually you would not push all the time to GitHub, at which point you do not have a full backup if things go wrong. I use git in a folder that is synchronized with Dropbox.

5. Is this a manual process, in other words if you don't commit you won't have a new version of the changes made?

   Yes, committing and pushing are both manual.

6. If are not collaborating and you are already using a backup system why would you use Git?

   • If you encounter an error between commits you can use the command git diff to see the differences between the current code and the last working commit, helping you to locate your error.

   • You can also just go back to the last working commit.

   • If you want to try a change, but are not sure that it will work. You create a branch to test you code change. If it works fine, you merge it to the main branch. If it does not you just throw the branch away and go back to the main branch.

   • You did some debugging. Before you commit you always look at the changes from the last commit. You see your debug print statement that you forgot to delete.

Make sure you check gitimmersion.com.

In my project I managed to use GridLayout and results are very stable, with no flickering and with a perfectly working vertical scrollbar.

First I created a JPanel for the settings; in my case it is a grid with a row for each parameter and two columns: left column is for labels and right column is for components. I believe your case is similar.

JPanel yourSettingsPanel = new JPanel();
yourSettingsPanel.setLayout(new GridLayout(numberOfParams, 2));

I then populate this panel by iterating on my parameters and alternating between adding a JLabel and adding a component.

for (int i = 0; i < numberOfParams; ++i) {
    yourSettingsPanel.add(labels[i]);
    yourSettingsPanel.add(components[i]);
}

To prevent yourSettingsPanel from extending to the entire container I first wrap it in the north region of a dummy panel, that I called northOnlyPanel.

JPanel northOnlyPanel = new JPanel();
northOnlyPanel.setLayout(new BorderLayout());
northOnlyPanel.add(yourSettingsPanel, BorderLayout.NORTH);

Finally I wrap the northOnlyPanel in a JScrollPane, which should behave nicely pretty much anywhere.

JScrollPane scroll = new JScrollPane(northOnlyPanel,
                                     JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
                                     JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);

Most likely you want to display this JScrollPane extended inside a JFrame; you can add it to a BorderLayout JFrame, in the CENTER region:

window.add(scroll, BorderLayout.CENTER);

In my case I put it on the left column of a GridLayout(1, 2) panel, and I use the right column to display contextual help for each parameter.

JTextArea help = new JTextArea();
help.setLineWrap(true);
help.setWrapStyleWord(true);
help.setEditable(false);

JPanel split = new JPanel();
split.setLayout(new GridLayout(1, 2));
split.add(scroll);
split.add(help);

If you have a menu then changing ShortcutKeys property of the ToolStripMenuItem should do the trick.

If not, you could create one and set its visible property to false.

>>str = "http://www.domain.com/?s=some&two=20"
>>str.split("&")
>>["http://www.domain.com/?s=some", "two=20"]

The first parentheses are for, if you will, order of operations. The 'result' of the set of parentheses surrounding the function definition is the function itself which, indeed, the second set of parentheses executes.

As to why it's useful, I'm not enough of a JavaScript wizard to have any idea. :P

As far as I can see, this would be possible only using height: (some em value); overflow: hidden and even then it wouldn't have the fancy ... at the end.

If that is not an option, I think it's impossible without some server side pre-processing (difficult because text flow is impossible to predict reliably) or jQuery (possible but probably complicated).

new_list = ['Name1', '7.3', '6.9', '6.6', '6.6', '6.1', '6.4', '7.3\n']
for i in range(len(new_list)):
    new_list[i]=new_list[i].replace('\n','')
print(new_list)

Output Will be like this

['Name1', '7.3', '6.9', '6.6', '6.6', '6.1', '6.4', '7.3']