Prevent a webpage from navigating away using JavaScript

For jQuery, I think this works like so:

$(window).unload(function() { 
  alert("Unloading"); 
  return falseIfYouWantToButBeCareful();
});

Trim whitespace from a String

I think that substr() throws an exception if str only contains the whitespace.

I would modify it to the following code:

string trim(string& str)
{
    size_t first = str.find_first_not_of(' ');
    if (first == std::string::npos)
        return "";
    size_t last = str.find_last_not_of(' ');
    return str.substr(first, (last-first+1));
}

There are 2 version of the Java Environments, J2EE and Se. SE is the standard edition, which includes all the basic classes that you would need to write single user applications. While the Enterprise Edition is set up for multi-tiered enterprise applications, or possible distributed applications. If you'd be using app servers, like tomcat or websphere, you'd want to use the J2EE, with the extra classes for n-tier support.

Using HTML5/JavaScript to generate and save a file

OK, creating a data:URI definitely does the trick for me, thanks to Matthew and Dennkster pointing that option out! Here is basically how I do it:

1) get all the content into a string called "content" (e.g. by creating it there initially or by reading innerHTML of the tag of an already built page).

2) Build the data URI:

uriContent = "data:application/octet-stream," + encodeURIComponent(content);

There will be length limitations depending on browser type etc., but e.g. Firefox 3.6.12 works until at least 256k. Encoding in Base64 instead using encodeURIComponent might make things more efficient, but for me that was ok.

3) open a new window and "redirect" it to this URI prompts for a download location of my JavaScript generated page:

newWindow = window.open(uriContent, 'neuesDokument');

That's it.

JSON forEach get Key and Value

Assuming that obj is a pre-constructed object (and not a JSON string), you can achieve this with the following:

Object.keys(obj).forEach(function(key){
   console.log(key + '=' + obj[key]);
});

New Array from Index Range Swift

This works for me:

var test = [1, 2, 3]
var n = 2
var test2 = test[0..<n]

Your issue could be with how you're declaring your array to begin with.

EDIT:

To fix your function, you have to cast your Slice to an array:

func aFunction(numbers: Array<Int>, position: Int) -> Array<Int> {
    var newNumbers = Array(numbers[0..<position])
    return newNumbers
}

// test
aFunction([1, 2, 3], 2) // returns [1, 2]

Powershell folder size of folders without listing Subdirectories

from sysinternals.com with du.exe or du64.exe -l 1 . or 2 levels down: **du -l 2 c:**

Much shorter than Linux though ;)

Writing handler for UIAlertAction

Syntax change in swift 3.0

alert.addAction(UIAlertAction(title: "Okay",
                style: .default,
                handler: { _ in print("Foo") } ))

Save a subplot in matplotlib

Applying the full_extent() function in an answer by @Joe 3 years later from here, you can get exactly what the OP was looking for. Alternatively, you can use Axes.get_tightbbox() which gives a little tighter bounding box

import matplotlib.pyplot as plt
import matplotlib as mpl
import numpy as np
from matplotlib.transforms import Bbox

def full_extent(ax, pad=0.0):
    """Get the full extent of an axes, including axes labels, tick labels, and
    titles."""
    # For text objects, we need to draw the figure first, otherwise the extents
    # are undefined.
    ax.figure.canvas.draw()
    items = ax.get_xticklabels() + ax.get_yticklabels() 
#    items += [ax, ax.title, ax.xaxis.label, ax.yaxis.label]
    items += [ax, ax.title]
    bbox = Bbox.union([item.get_window_extent() for item in items])

    return bbox.expanded(1.0 + pad, 1.0 + pad)

# Make an example plot with two subplots...
fig = plt.figure()
ax1 = fig.add_subplot(2,1,1)
ax1.plot(range(10), 'b-')

ax2 = fig.add_subplot(2,1,2)
ax2.plot(range(20), 'r^')

# Save the full figure...
fig.savefig('full_figure.png')

# Save just the portion _inside_ the second axis's boundaries
extent = full_extent(ax2).transformed(fig.dpi_scale_trans.inverted())
# Alternatively,
# extent = ax.get_tightbbox(fig.canvas.renderer).transformed(fig.dpi_scale_trans.inverted())
fig.savefig('ax2_figure.png', bbox_inches=extent)

I'd post a pic but I lack the reputation points

Python 2.6: Class inside a Class?

class Second:
    def __init__(self, data):
        self.data = data

class First:
    def SecondClass(self, data):
        return Second(data)

FirstClass = First()
SecondClass = FirstClass.SecondClass('now you see me')
print SecondClass.data

PHP, display image with Header()

Browsers can often tell the image type by sniffing out the meta information of the image. Also, there should be a space in that header:

header('Content-type: image/png');

read complete file without using loop in java

You can try using Scanner if you are using JDK5 or higher.

Scanner scan = new Scanner(file);  
scan.useDelimiter("\\Z");  
String content = scan.next();

Or you can also use Guava

String data = Files.toString(new File("path.txt"), Charsets.UTF8);

How to escape % in String.Format?

To escape %, you will need to double it up: %%.

set environment variable in python script

Compact solution (provided you don't need other environment variables):

call('sqsub -np {} /homedir/anotherdir/executable'.format(var1).split(),
      env=dict(LD_LIBRARY_PATH=my_path))

Using the env command line tool:

call('env LD_LIBRARY_PATH=my_path sqsub -np {} /homedir/anotherdir/executable'.format(var1).split())

Open Url in default web browser

You should use Linking.

Example from the docs:

class OpenURLButton extends React.Component {
  static propTypes = { url: React.PropTypes.string };
  handleClick = () => {
    Linking.canOpenURL(this.props.url).then(supported => {
      if (supported) {
        Linking.openURL(this.props.url);
      } else {
        console.log("Don't know how to open URI: " + this.props.url);
      }
    });
  };
  render() {
    return (
      <TouchableOpacity onPress={this.handleClick}>
        {" "}
        <View style={styles.button}>
          {" "}<Text style={styles.text}>Open {this.props.url}</Text>{" "}
        </View>
        {" "}
      </TouchableOpacity>
    );
  }
}

Here's an example you can try on Expo Snack:

import React, { Component } from 'react';
import { View, StyleSheet, Button, Linking } from 'react-native';
import { Constants } from 'expo';

export default class App extends Component {
  render() {
    return (
      <View style={styles.container}>
       <Button title="Click me" onPress={ ()=>{ Linking.openURL('https://google.com')}} />
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    alignItems: 'center',
    justifyContent: 'center',
    paddingTop: Constants.statusBarHeight,
    backgroundColor: '#ecf0f1',
  },
});

Access restriction: Is not accessible due to restriction on required library ..\jre\lib\rt.jar

I ran into something similar, I think that the cause of the warning is Eclipse trying to discourage you from using the internal com.sun packages that are installed as part of your workspace JRE but which are not part of the public Java API.

As Justin says in his answer, changing your compiler settings can hide the warning. A more fine-grained approach is to modify your build path to explicitly allow access to the package in question:

Open the Libraries tab of the Java Build Path project property window.
Expand the JRE System Library entry.
Select "Access rules" and hit the Edit button.
Click the Add button in the resulting dialog.
For the new access rule, set the resolution to Accessible and the pattern to "com/sun/xml/internal/**".

After adding this access rule, your project should build without these warning.

MySQL & Java - Get id of the last inserted value (JDBC)

Wouldn't you just change:

numero = stmt.executeUpdate(query);

to:

numero = stmt.executeUpdate(query, Statement.RETURN_GENERATED_KEYS);

Take a look at the documentation for the JDBC Statement interface.

Update: Apparently there is a lot of confusion about this answer, but my guess is that the people that are confused are not reading it in the context of the question that was asked. If you take the code that the OP provided in his question and replace the single line (line 6) that I am suggesting, everything will work. The numero variable is completely irrelevant and its value is never read after it is set.

Explicitly set column value to null SQL Developer

Use Shift+Del.

More info: Shift+Del combination key set a field to null when you filled a field by a value and you changed your decision and you want to make it null. It is useful and I amazed from the other answers that give strange solutions.

SQLException: No suitable driver found for jdbc:derby://localhost:1527

java.sql.SQLException: No suitable driver found for jdbc:derby://localhost:1527/

This exception has two causes:

The driver is not loaded.
The JDBC URL is malformed.

In your case, I'd expect to see a database name at the end of the connection string. For example (use create=true if you want the database to be created if it doesn't exist):

jdbc:derby://localhost:1527/dbname;create=true

Databases are created by default in the directory where the Network Server was started up. But you can also specify an absolute path to the database location:

jdbc:derby://localhost:1527//home/pascal/derbyDBs/dbname;create=true

And just in case, check that derbyclient.jar is on the class path and that you are loading the appropriate driver org.apache.derby.jdbc.ClientDriver when working in server mode.

How to catch segmentation fault in Linux?

Here's an example of how to do it in C.

#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

void segfault_sigaction(int signal, siginfo_t *si, void *arg)
{
    printf("Caught segfault at address %p\n", si->si_addr);
    exit(0);
}

int main(void)
{
    int *foo = NULL;
    struct sigaction sa;

    memset(&sa, 0, sizeof(struct sigaction));
    sigemptyset(&sa.sa_mask);
    sa.sa_sigaction = segfault_sigaction;
    sa.sa_flags   = SA_SIGINFO;

    sigaction(SIGSEGV, &sa, NULL);

    /* Cause a seg fault */
    *foo = 1;

    return 0;
}

Which language uses .pde extension?

pde is extesion for:

Processing: Java derived language
Wiring: C/C++ derived language (Wiring is derived from Processing)
Early versions of Arduino: C/C++ derived (Arduino IDE is derived from Wiring)

For Arduino for example the IDE preprocessor is adding some #defines and some C/C++ files before giving all to gcc.

Database Diagram Support Objects cannot be Installed ... no valid owner

In SQL Server Management Studio do the following:

Right Click on your database, choose properties
Go to the Options Page
In the Drop down at right labeled "Compatibility Level" choose "SQL Server 2005(90)" 3-1. choose "SQL Server 2008" if you receive a comparability error.
Go to the Files Page
Enter "sa" in the owner textbox. 5-1 or click on the ellipses(...) and choose a rightful owner.
Hit OK

after doing this, You will now be able to access the Database Diagrams.

enter image description here

How can I know which radio button is selected via jQuery?

This works fine

$('input[type="radio"][class="className"]:checked').val()

Working Demo

The :checked selector works for checkboxes, radio buttons, and select elements. For select elements only, use the :selected selector.

API for :checked Selector

How can I print out just the index of a pandas dataframe?

You can access the index attribute of a df using .index:

In [277]:

df = pd.DataFrame({'a':np.arange(10), 'b':np.random.randn(10)})
df
Out[277]:
   a         b
0  0  0.293422
1  1 -1.631018
2  2  0.065344
3  3 -0.417926
4  4  1.925325
5  5  0.167545
6  6 -0.988941
7  7 -0.277446
8  8  1.426912
9  9 -0.114189
In [278]:

df.index
Out[278]:
Int64Index([0, 1, 2, 3, 4, 5, 6, 7, 8, 9], dtype='int64')

How to increase the timeout period of web service in asp.net?

In app.config file (or .exe.config) you can add or change the "receiveTimeout" property in binding. like this

<binding name="WebServiceName" receiveTimeout="00:00:59" />

How to print a specific row of a pandas DataFrame?

Sounds like you're calling df.plot(). That error indicates that you're trying to plot a frame that has no numeric data. The data types shouldn't affect what you print().

Use print(df.iloc[159220])

how to remove pagination in datatable

It's working

Try below code

$('#example').dataTable({
    "bProcessing": true,
    "sAutoWidth": false,
    "bDestroy":true,
    "sPaginationType": "bootstrap", // full_numbers
    "iDisplayStart ": 10,
    "iDisplayLength": 10,
    "bPaginate": false, //hide pagination
    "bFilter": false, //hide Search bar
    "bInfo": false, // hide showing entries
})

Effective way to find any file's Encoding

I'd try the following steps:

1) Check if there is a Byte Order Mark

2) Check if the file is valid UTF8

3) Use the local "ANSI" codepage (ANSI as Microsoft defines it)

Step 2 works because most non ASCII sequences in codepages other that UTF8 are not valid UTF8.

R Error in x$ed : $ operator is invalid for atomic vectors

Because $ does not work on atomic vectors. Use [ or [[ instead. From the help file for $:

The default methods work somewhat differently for atomic vectors, matrices/arrays and for recursive (list-like, see is.recursive) objects. $ is only valid for recursive objects, and is only discussed in the section below on recursive objects.

x[["ed"]] will work.

How do I create a URL shortener?

Function based in Xeoncross Class

function shortly($input){
$dictionary = ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','0','1','2','3','4','5','6','7','8','9'];
if($input===0)
    return $dictionary[0];
$base = count($dictionary);
if(is_numeric($input)){
    $result = [];
    while($input > 0){
        $result[] = $dictionary[($input % $base)];
        $input = floor($input / $base);
    }
    return join("", array_reverse($result));
}
$i = 0;
$input = str_split($input);
foreach($input as $char){
    $pos = array_search($char, $dictionary);
    $i = $i * $base + $pos;
}
return $i;
}

How do I get this javascript to run every second?

You can use setInterval:

var timer = setInterval( myFunction, 1000);

Just declare your function as myFunction or some other name, and then don't bind it to $('.more')'s live event.

Which is better, return value or out parameter?

Both of them have a different purpose and are not treated the same by the compiler. If your method needs to return a value, then you must use return. Out is used where your method needs to return multiple values.

If you use return, then the data is first written to the methods stack and then in the calling method's. While in case of out, it is directly written to the calling methods stack. Not sure if there are any more differences.

Web link to specific whatsapp contact

This answer is useful to them who want click to chat whatsapp in website to redirect web.whatsapp.com with default content or message and in mobile device to open in whatsapp in mobile app with default content to text bar in app.

also add jquery link.

<a  target="_blank" title="Contact Us On WhatsApp" href="https://web.whatsapp.com/send?phone=+919581880892&amp;text=Hi, I would like to get more information.." class="whatsapplink hidemobile" style="background-color:#2DC100">
    <i class="fa fa-fw fa-whatsapp" style="color:#fff"></i>
    <span style="color:#fff">
        Contact Us On WhatsApp        </span>
</a>
<a  target="_blank" title="Contact Us On WhatsApp" href="https://api.whatsapp.com/send?phone=+919581880892&text=Hi,%20I%20would%20like%20to%20get%20more%20information.." class="whatsapplink hideweb" style="background-color:#2DC100">
    <i class="fa fa-fw fa-whatsapp" style="color:#fff"></i>
    <span style="color:#fff">
        Contact Us On WhatsApp        </span>
</a>

   <script type="text/javascript"> 
var mobile = (/iphone|ipod|android|blackberry|mini|windows\sce|palm/i.test(navigator.userAgent.toLowerCase()));  
if (mobile) { 

    $('.hidemobile').css('display', 'none'); // OR you can use $('.hidemobile').hide();
} 
else 
{ 
    $('.hideweb').css('display', 'none'); // OR you can use $('.hideweb').hide();
}
</script>

How to execute .sql script file using JDBC

You should be able to parse the SQL file into statements. And run a single statement a time. If you know that your file consists of simple insert/update/delete statements you can use a semicolon as statement delimiter. In common case you have a task to create your specific SQL-dialect parser.

Rails: update_attribute vs update_attributes

You might be interested in visiting this blog post concerning all the possible ways to assign an attribute or update record (updated to Rails 4) update_attribute, update, update_column, update_columns etc. http://www.davidverhasselt.com/set-attributes-in-activerecord/. For example it differs in aspects such as running validations, touching object's updated_at or triggering callbacks.

As an answer to the OP's question update_attribute does not by pass callbacks.

How does PHP 'foreach' actually work?

NOTE FOR PHP 7

To update on this answer as it has gained some popularity: This answer no longer applies as of PHP 7. As explained in the "Backward incompatible changes", in PHP 7 foreach works on copy of the array, so any changes on the array itself are not reflected on foreach loop. More details at the link.

Explanation (quote from php.net):

The first form loops over the array given by array_expression. On each iteration, the value of the current element is assigned to $value and the internal array pointer is advanced by one (so on the next iteration, you'll be looking at the next element).

So, in your first example you only have one element in the array, and when the pointer is moved the next element does not exist, so after you add new element foreach ends because it already "decided" that it it as the last element.

In your second example, you start with two elements, and foreach loop is not at the last element so it evaluates the array on the next iteration and thus realises that there is new element in the array.

I believe that this is all consequence of On each iteration part of the explanation in the documentation, which probably means that foreach does all logic before it calls the code in {}.

Test case

If you run this:

<?
    $array = Array(
        'foo' => 1,
        'bar' => 2
    );
    foreach($array as $k=>&$v) {
        $array['baz']=3;
        echo $v." ";
    }
    print_r($array);
?>

You will get this output:

1 2 3 Array
(
    [foo] => 1
    [bar] => 2
    [baz] => 3
)

Which means that it accepted the modification and went through it because it was modified "in time". But if you do this:

<?
    $array = Array(
        'foo' => 1,
        'bar' => 2
    );
    foreach($array as $k=>&$v) {
        if ($k=='bar') {
            $array['baz']=3;
        }
        echo $v." ";
    }
    print_r($array);
?>

You will get:

1 2 Array
(
    [foo] => 1
    [bar] => 2
    [baz] => 3
)

Which means that array was modified, but since we modified it when the foreach already was at the last element of the array, it "decided" not to loop anymore, and even though we added new element, we added it "too late" and it was not looped through.

Detailed explanation can be read at How does PHP 'foreach' actually work? which explains the internals behind this behaviour.

SQL Server - Adding a string to a text column (concat equivalent)

like said before best would be to set datatype of the column to nvarchar(max), but if that's not possible you can do the following using cast or convert:

-- create a test table 
create table test (
    a text
) 
-- insert test value
insert into test (a) values ('this is a text')
-- the following does not work !!!
update test set a = a + ' and a new text added'
-- but this way it works: 
update test set a = cast ( a as nvarchar(max))  + cast (' and a new text added' as nvarchar(max) )
-- test result
select * from test
-- column a contains:
this is a text and a new text added

hope that helps

Capitalize or change case of an NSString in Objective-C

viewNoteDateMonth.text  = [[displayDate objectAtIndex:2] uppercaseString];

Documentation: http://developer.apple.com/library/ios/documentation/Cocoa/Reference/Foundation/Classes/NSString_Class/Reference/NSString.html#//apple_ref/occ/instm/NSString/uppercaseString

You can also use lowercaseString and capitalizedString

How to present UIAlertController when not in a view controller?

Kevin Sliech provided a great solution.

I now use the below code in my main UIViewController subclass.

One small alteration i made was to check to see if the best presentation controller is not a plain UIViewController. If not, it's got to be some VC that presents a plain VC. Thus we return the VC that's being presented instead.

- (UIViewController *)bestPresentationController
{
    UIViewController *bestPresentationController = [UIApplication sharedApplication].keyWindow.rootViewController;

    if (![bestPresentationController isMemberOfClass:[UIViewController class]])
    {
        bestPresentationController = bestPresentationController.presentedViewController;
    }    

    return bestPresentationController;
}

Seems to all work out so far in my testing.

Thank you Kevin!

Calling a javascript function in another js file

A function cannot be called unless it was defined in the same file or one loaded before the attempt to call it.

A function cannot be called unless it is in the same or greater scope then the one trying to call it.

You declare function fn1 in first.js, and then in second you can just have fn1();

1.js:

function fn1 () {
    alert();
}

2.js:

fn1();

index.html :

<script type="text/javascript" src="1.js"></script>
<script type="text/javascript" src="2.js"></script>

What is difference between cacerts and keystore?

'cacerts' is a truststore. A trust store is used to authenticate peers. A keystore is used to authenticate yourself.

Global Events in Angular

My favorite way to do is by using behavior subject or event emitter (almost the same) in my service to control all my subcomponent.

Using angular cli, run ng g s to create a new service then use a BehaviorSubject or EventEmitter

export Class myService {
#all the stuff that must exist

myString: string[] = [];
contactChange : BehaviorSubject<string[]> = new BehaviorSubject(this.myString);

   getContacts(newContacts) {
     // get your data from a webservices & when you done simply next the value 
    this.contactChange.next(newContacts);
   }
}

When you do that every component using your service as a provider will be aware of the change. Simply subscribe to the result like you do with eventEmitter ;)

export Class myComp {
#all the stuff that exists like @Component + constructor using (private myService: myService)

this.myService.contactChange.subscribe((contacts) => {
     this.contactList += contacts; //run everytime next is called
  }
}

Notepad++ add to every line

Well, I am posting this after such a long time but this will the easiest of all.

To add text at the beginning/a-certain-place-from-start for all lines, just click there and do ALT+C and you will get the below box. Type in your text and click OK and it's done.
To add a certain text at end of all lines, do CTRL+F, and choose REPLACE. You will get the below box. Put in '$' in 'find what' and in 'replace with' type in your text.Make sure you choose 'regular expression' in the search mode (left down). Finally click 'replace all' and you are done.

Is there a better way to compare dictionary values

If your dictionaries are deeply nested and if they contain different types of collections, you could convert them to json string and compare.

import json
match = (json.dumps(dict1) == json.dumps(dict2))

caveat- this solution may not work if your dictionaries have binary strings in the values as this is not json serializable

Add comma to numbers every three digits

function formatNumberCapture () {
$('#input_id').on('keyup', function () {
    $(this).val(function(index, value) {
        return value
            .replace(/\D/g, "")
            .replace(/\B(?=(\d{3})+(?!\d))/g, ",")
            ;
    });
});

You can try this, it works for me

tmux set -g mouse-mode on doesn't work

You can still using the devil logic of setting options depending on your current Tmux version: see my previous answer.

But since Tmux v1.7, set-option adds "-q" to silence errors and not print out anything (see changelog). I recommend to use this feature, it's more readable and easily expandable.

Add this to your ~/.tmux.conf:

# from v2.1
set -gq mouse on
# before v2.1
set -gq mode-mouse on
set -gq mouse-resize-pane on
set -gq mouse-select-pane on
set -gq mouse-select-window on

Restar tmux or source-file your new .tmux.conf

Side note: I'm open to remove my old answer if people prefer this one

Scrollview vertical and horizontal in android

Mixing some of the suggestions above, and was able to get a good solution:

Custom ScrollView:

package com.scrollable.view;

import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.widget.ScrollView;

public class VScroll extends ScrollView {

    public VScroll(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    public VScroll(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public VScroll(Context context) {
        super(context);
    }

    @Override
    public boolean onTouchEvent(MotionEvent ev) {
        return false;
    }
}

Custom HorizontalScrollView:

package com.scrollable.view;

import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.widget.HorizontalScrollView;

public class HScroll extends HorizontalScrollView {

    public HScroll(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    public HScroll(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public HScroll(Context context) {
        super(context);
    }

    @Override
    public boolean onTouchEvent(MotionEvent ev) {
        return false;
    }
}

the ScrollableImageActivity:

package com.scrollable.view;

import android.app.Activity;
import android.os.Bundle;
import android.view.MotionEvent;
import android.widget.HorizontalScrollView;
import android.widget.ScrollView;

public class ScrollableImageActivity extends Activity {

    private float mx, my;
    private float curX, curY;

    private ScrollView vScroll;
    private HorizontalScrollView hScroll;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        vScroll = (ScrollView) findViewById(R.id.vScroll);
        hScroll = (HorizontalScrollView) findViewById(R.id.hScroll);

    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        float curX, curY;

        switch (event.getAction()) {

            case MotionEvent.ACTION_DOWN:
                mx = event.getX();
                my = event.getY();
                break;
            case MotionEvent.ACTION_MOVE:
                curX = event.getX();
                curY = event.getY();
                vScroll.scrollBy((int) (mx - curX), (int) (my - curY));
                hScroll.scrollBy((int) (mx - curX), (int) (my - curY));
                mx = curX;
                my = curY;
                break;
            case MotionEvent.ACTION_UP:
                curX = event.getX();
                curY = event.getY();
                vScroll.scrollBy((int) (mx - curX), (int) (my - curY));
                hScroll.scrollBy((int) (mx - curX), (int) (my - curY));
                break;
        }

        return true;
    }

}

the layout:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <com.scrollable.view.VScroll android:layout_height="fill_parent"
        android:layout_width="fill_parent" android:id="@+id/vScroll">
        <com.scrollable.view.HScroll android:id="@+id/hScroll"
            android:layout_width="fill_parent" android:layout_height="fill_parent">
            <ImageView android:layout_width="fill_parent" android:layout_height="fill_parent" android:src="@drawable/bg"></ImageView>
        </com.scrollable.view.HScroll>
    </com.scrollable.view.VScroll>

</LinearLayout>

'sudo gem install' or 'gem install' and gem locations

In case you

installed ruby gems with sudo
want to install gems without sudo
don't want to install rvm/rbenv

add the following to your .bash_profile :

export GEM_HOME=/Users/‹your_user›/.gem
export PATH="$GEM_HOME/bin:$PATH"

Open a new tab in Terminal OR source ~/.bash_profile and you're good to go!

How to get the cell value by column name not by index in GridView in asp.net

You can use the DataRowView to get the column index.

    void OnRequestsGridRowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            var data = e.Row.DataItem as DataRowView;

            // replace request name with a link
            if (data.DataView.Table.Columns["Request Name"] != null)
            {
                // get the request name
                string title = data["Request Name"].ToString();
                // get the column index
                int idx = data.Row.Table.Columns["Request Name"].Ordinal;

                // ...

                e.Row.Cells[idx].Controls.Clear();
                e.Row.Cells[idx].Controls.Add(link);
            }
        }
    }

Jquery insert new row into table at a certain index

Note:

$('#my_table > tbody:last').append(newRow); // this will add new row inside tbody

$("table#myTable tr").last().after(newRow);  // this will add new row outside tbody 
                                             //i.e. between thead and tbody
                                             //.before() will also work similar

Oracle query execution time

Use:

set serveroutput on
variable n number
exec :n := dbms_utility.get_time;
select ......
exec dbms_output.put_line( (dbms_utility.get_time-:n)/100) || ' seconds....' );

Or possibly:

SET TIMING ON;

-- do stuff

SET TIMING OFF;

...to get the hundredths of seconds that elapsed.

In either case, time elapsed can be impacted by server load/etc.

Reference:

ASKTOM - SET TIMING ON/OFF

How to uninstall with msiexec using product id guid without .msi file present

"Reference-Style" Answer: This is an alternative answer to the one below with several different options shown. Uninstalling an MSI file from the command line without using msiexec.

The command you specify is correct: msiexec /x {A4BFF20C-A21E-4720-88E5-79D5A5AEB2E8}

If you get "This action is only valid for products that are currently installed" you have used an unrecognized product or package code, and you must find the right one. Often this can be caused by using an erroneous package code instead of a product code to uninstall - a package code changes with every rebuild of an MSI file, and is the only guid you see when you view an msi file's property page. It should work for uninstall, provided you use the right one. No room for error. If you want to find the product code instead, you need to open the MSI. The product code is found in the Property table.

UPDATE, Jan 2018:

With all the registry redirects going on, I am not sure the below registry-based approach is a viable option anymore. I haven't checked properly because I now rely on the following approach using PowerShell: How can I find the product GUID of an installed MSI setup?

Also check this reference-style answer describing different ways to uninstall an MSI package and ways to determine what product version you have installed: Uninstalling an MSI file from the command line without using msiexec

Legacy, registry option:

You can also find the product code by perusing the registry from this base key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall . Press F3 and search for your product name. (If it's a 32-bit installer on a 64-bit machine, it might be under HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall instead).

Legacy, PowerShell option: (largely similar to the new, linked answer above)

Finally, you can find the product code by using PowerShell:

get-wmiobject Win32_Product | Format-Table IdentifyingNumber, Name

enter image description here

Similar post: WiX - Doing a major upgrade on a multi instance install (screenshot of how to find the product code in the MSI).

How to split a string in Java

String[] out = string.split("-");

should do the thing you want. The string class has many method to operate with a string.

How to center icon and text in a android button with width set to "fill parent"

<style name="captionOnly">
    <item name="android:background">@null</item>
    <item name="android:clickable">false</item>
    <item name="android:focusable">false</item>
    <item name="android:minHeight">0dp</item>
    <item name="android:minWidth">0dp</item>
</style>

<FrameLayout
   style="?android:attr/buttonStyle"
   android:layout_width="match_parent"
   android:layout_height="wrap_content" >

    <Button
       style="@style/captionOnly"
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:layout_gravity="center"
       android:drawableLeft="@android:drawable/ic_delete"
       android:gravity="center"
       android:text="Button Challenge" />
</FrameLayout>

Put the FrameLayout in LinearLayout and set orientation to Horizontal.

What is a void pointer in C++?

Void is used as a keyword. The void pointer, also known as the generic pointer, is a special type of pointer that can be pointed at objects of any data type! A void pointer is declared like a normal pointer, using the void keyword as the pointer’s type:

General Syntax:

void* pointer_variable;

void *pVoid; // pVoid is a void pointer

A void pointer can point to objects of any data type:

int nValue;
float fValue;

struct Something
{
    int nValue;
    float fValue;
};

Something sValue;

void *pVoid;
pVoid = &nValue; // valid
pVoid = &fValue; // valid
pVoid = &sValue; // valid

However, because the void pointer does not know what type of object it is pointing to, it can not be dereferenced! Rather, the void pointer must first be explicitly cast to another pointer type before it is dereferenced.

int nValue = 5;
void *pVoid = &nValue;

// can not dereference pVoid because it is a void pointer

int *pInt = static_cast<int*>(pVoid); // cast from void* to int*

cout << *pInt << endl; // can dereference pInt

Source: link

Remove a symlink to a directory

If rm cannot remove a symlink, perhaps you need to look at the permissions on the directory that contains the symlink. To remove directory entries, you need write permission on the containing directory.

Git:nothing added to commit but untracked files present

In case someone cares just about the error nothing added to commit but untracked files present (use "git add" to track) and not about Please move or remove them before you can merge.. You might have a look at the answers on Git - Won't add files?

There you find at least 2 good candidates for the issue in question here: that you either are in a subfolder or in a parent folder, but not in the actual repo folder. If you are in the directory one level too high, this will definitely raise that message "nothing added to commit…", see my answer in the link for details. I do not know if the same message occurs when you are in a subfolder, but it is likely. That could fit to your explanations.

Error: "setFile(null,false) call failed" when using log4j

Have a look at the error - 'log4j:ERROR setFile(null,false) call failed. java.io.FileNotFoundException: logs (Access is denied)'

It seems there's a log file named as 'logs' to which access is denied i.e it is not having sufficient permissions to write logs. Try by giving write permissions to the 'logs' log file. Hope it helps.

HTML Tags in Javascript Alert() method

You can use all Unicode characters and the escape characters \n and \t. An example:

_x000D_

document.getElementById("test").onclick = function() {_x000D_
  alert(_x000D_
    'This is an alert with basic formatting\n\n' _x000D_
    + "\t• list item 1\n" _x000D_
    + '\t• list item 2\n' _x000D_
    + '\t• list item 3\n\n' _x000D_
    + '???????????????????????\n\n' _x000D_
    + 'Simple table\n\n' _x000D_
    + 'Char\t| Result\n' _x000D_
    + '\\n\t| line break\n' _x000D_
    + '\\t\t| tab space'_x000D_
  );_x000D_
}

_x000D_

<!DOCTYPE html>_x000D_
<title>Alert formatting</title>_x000D_
<meta charset=utf-8>_x000D_
<button id=test>Click</button>

_x000D_

Result in Firefox:

screenshot Firefox

You get the same look in almost all browsers.

Where is the user's Subversion config file stored on the major operating systems?

In windows 7, 8, and 10 you can find at the following location

C:\Users\<user>\AppData\Roaming\Subversion

If you enter the following in the Windows Explorer address bar, it will take you right there.

%appdata%\Subversion

Import JSON file in React

Something that worked for me was to simply place the JSON file in the public folder. You can simply import in any js using

brain.loadData("exampleFile.json");

It is as simple as that I guess. Definitely worth a try :D

Where is the Android SDK folder located?

Check if a string is a valid date using DateTime.TryParse

Use DateTime.TryParseExact() if you want to match against a specific date format

 string format = "ddd dd MMM h:mm tt yyyy";
DateTime dateTime;
if (DateTime.TryParseExact(dateString, format, CultureInfo.InvariantCulture,
    DateTimeStyles.None, out dateTime))
{
    Console.WriteLine(dateTime);
}
else
{
    Console.WriteLine("Not a date");
}

regular expression to validate datetime format (MM/DD/YYYY)

It's long, but great:

new RegExp(/(?=\d)^(?:(?!(?:10\D(?:0?[5-9]|1[0-4])\D(?:1582))|(?:0?9\D(?:0?[3-9]|1[0-3])\D(?:1752)))((?:0?[13578]|1[02])|(?:0?[469]|11)(?!\/31)(?!-31)(?!\.31)|(?:0?2(?=.?(?:(?:29.(?!000[04]|(?:(?:1[^0-6]|[2468][^048]|[3579][^26])00))(?:(?:(?:\d\d)(?:[02468][048]|[13579][26])(?!\x20BC))|(?:00(?:42|3[0369]|2[147]|1[258]|09)\x20BC))))))|(?:0?2(?=.(?:(?:\d\D)|(?:[01]\d)|(?:2[0-8])))))([-.\/])(0?[1-9]|[12]\d|3[01])\2(?!0000)((?=(?:00(?:4[0-5]|[0-3]?\d)\x20BC)|(?:\d{4}(?!\x20BC)))\d{4}(?:\x20BC)?)(?:$|(?=\x20\d)\x20))?((?:(?:0?[1-9]|1[012])(?::[0-5]\d){0,2}(?:\x20[aApP][mM]))|(?:[01]\d|2[0-3])(?::[0-5]\d){1,2})?$/);

WhatsApp API (java/python)

This is the developers page of the Open WhatsApp official page: http://openwhatsapp.org/develop/

You can find a lot of information there about Yowsup.

Or, you can just go the the library's link (which I copied from the Open WhatsApp page anyway): https://github.com/tgalal/yowsup

Enjoy!

How to combine two or more querysets in a Django view?

You can use the QuerySetChain class below. When using it with Django's paginator, it should only hit the database with COUNT(*) queries for all querysets and SELECT() queries only for those querysets whose records are displayed on the current page.

Note that you need to specify template_name= if using a QuerySetChain with generic views, even if the chained querysets all use the same model.

from itertools import islice, chain

class QuerySetChain(object):
    """
    Chains multiple subquerysets (possibly of different models) and behaves as
    one queryset.  Supports minimal methods needed for use with
    django.core.paginator.
    """

    def __init__(self, *subquerysets):
        self.querysets = subquerysets

    def count(self):
        """
        Performs a .count() for all subquerysets and returns the number of
        records as an integer.
        """
        return sum(qs.count() for qs in self.querysets)

    def _clone(self):
        "Returns a clone of this queryset chain"
        return self.__class__(*self.querysets)

    def _all(self):
        "Iterates records in all subquerysets"
        return chain(*self.querysets)

    def __getitem__(self, ndx):
        """
        Retrieves an item or slice from the chained set of results from all
        subquerysets.
        """
        if type(ndx) is slice:
            return list(islice(self._all(), ndx.start, ndx.stop, ndx.step or 1))
        else:
            return islice(self._all(), ndx, ndx+1).next()

In your example, the usage would be:

pages = Page.objects.filter(Q(title__icontains=cleaned_search_term) |
                            Q(body__icontains=cleaned_search_term))
articles = Article.objects.filter(Q(title__icontains=cleaned_search_term) |
                                  Q(body__icontains=cleaned_search_term) |
                                  Q(tags__icontains=cleaned_search_term))
posts = Post.objects.filter(Q(title__icontains=cleaned_search_term) |
                            Q(body__icontains=cleaned_search_term) | 
                            Q(tags__icontains=cleaned_search_term))
matches = QuerySetChain(pages, articles, posts)

Then use matches with the paginator like you used result_list in your example.

The itertools module was introduced in Python 2.3, so it should be available in all Python versions Django runs on.

Unexpected end of file error

You did forget to include stdafx.h in your source (as I cannot see it your code). If you didn't, then make sure #include "stdafx.h" is the first line in your .cpp file, otherwise you will see the same error even if you've included "stdafx.h" in your source file (but not in the very beginning of the file).

c# dictionary one key many values

Use a dictionary of lists (or another type of collection), for example:

var myDictionary = new Dictionary<string, IList<int>>();

myDictionary["My key"] = new List<int> {1, 2, 3, 4, 5};

remove None value from a list without removing the 0 value

Using list comprehension this can be done as follows:

l = [i for i in my_list if i is not None]

The value of l is:

[0, 23, 234, 89, 0, 35, 9]

Declare a variable in DB2 SQL

I'm coming from a SQL Server background also and spent the past 2 weeks figuring out how to run scripts like this in IBM Data Studio. Hope it helps.

CREATE VARIABLE v_lookupid INTEGER DEFAULT (4815162342); --where 4815162342 is your variable data 
  SELECT * FROM DB1.PERSON WHERE PERSON_ID = v_lookupid;
  SELECT * FROM DB1.PERSON_DATA WHERE PERSON_ID = v_lookupid;
  SELECT * FROM DB1.PERSON_HIST WHERE PERSON_ID = v_lookupid;
DROP VARIABLE v_lookupid;

How can I create an utility class?

For a completely stateless utility class in Java, I suggest the class be declared public and final, and have a private constructor to prevent instantiation. The final keyword prevents sub-classing and can improve efficiency at runtime.

The class should contain all static methods and should not be declared abstract (as that would imply the class is not concrete and has to be implemented in some way).

The class should be given a name that corresponds to its set of provided utilities (or "Util" if the class is to provide a wide range of uncategorized utilities).

The class should not contain a nested class unless the nested class is to be a utility class as well (though this practice is potentially complex and hurts readability).

Methods in the class should have appropriate names.

Methods only used by the class itself should be private.

The class should not have any non-final/non-static class fields.

The class can also be statically imported by other classes to improve code readability (this depends on the complexity of the project however).

Example:

public final class ExampleUtilities {
    // Example Utility method
    public static int foo(int i, int j) {
        int val;

        //Do stuff

        return val;
    }

    // Example Utility method overloaded
    public static float foo(float i, float j) {
        float val;

        //Do stuff

        return val;
    }

    // Example Utility method calling private method
    public static long bar(int p) {
        return hid(p) * hid(p);
    }

    // Example private method
    private static long hid(int i) {
        return i * 2 + 1;
    }
}

Perhaps most importantly of all, the documentation for each method should be precise and descriptive. Chances are methods from this class will be used very often and its good to have high quality documentation to complement the code.

How to check sbt version?

$ sbt sbtVersion

This prints the sbt version used in your current project, or if it is a multi-module project for each module.

$ sbt 'inspect sbtVersion'
[info] Set current project to jacek (in build file:/Users/jacek/)
[info] Setting: java.lang.String = 0.13.1
[info] Description:
[info]  Provides the version of sbt.  This setting should be not be modified.
[info] Provided by:
[info]  */*:sbtVersion
[info] Defined at:
[info]  (sbt.Defaults) Defaults.scala:68
[info] Delegates:
[info]  *:sbtVersion
[info]  {.}/*:sbtVersion
[info]  */*:sbtVersion
[info] Related:
[info]  */*:sbtVersion

You may also want to use sbt about that (copying Mark Harrah's comment):

The about command was added recently to try to succinctly print the most relevant information, including the sbt version.

How do I check if an element is really visible with JavaScript?

You can use the clientHeight or clientWidth properties

function isViewable(element){
  return (element.clientHeight > 0);
}

How to get the values of a ConfigurationSection of type NameValueSectionHandler

Suffered from exact issue. Problem was because of NameValueSectionHandler in .config file. You should use AppSettingsSection instead:

<configuration>

 <configSections>
    <section  name="DEV" type="System.Configuration.AppSettingsSection" />
    <section  name="TEST" type="System.Configuration.AppSettingsSection" />
 </configSections>

 <TEST>
    <add key="key" value="value1" />
 </TEST>

 <DEV>
    <add key="key" value="value2" />
 </DEV>

</configuration>

then in C# code:

AppSettingsSection section = (AppSettingsSection)ConfigurationManager.GetSection("TEST");

btw NameValueSectionHandler is not supported any more in 2.0.

How to check if element exists using a lambda expression?

While the accepted answer is correct, I'll add a more elegant version (in my opinion):

boolean idExists = tabPane.getTabs().stream()
    .map(Tab::getId)
    .anyMatch(idToCheck::equals);

Don't neglect using Stream#map() which allows to flatten the data structure before applying the Predicate.

Android: How to bind spinner to custom object list?

In order to understand the trick, one has to know, how Adapters work in general and ArrayAdapter in particular.

Adapters: are objects that are able to bind data structures to widgets, then these widgets are displaying that data in a List or in a Spinner.

So the two questions an Adapter answers are:

Which widget or composite view needs to be associated with a data structure(your class' object) for a certain index?
How to extract the data from the data structure(your class' object) and how to set field(s) i.e EditText of the widget or composite view according to this data?

ArrayAdapter's answers are:

Each widget (i.e row.xml OR android.R.layout.simple_spinner_item) for any index is the same, and is inflated from the resource whose ID was given to ArrayAdapter's constructor.
Each widget is expected to be an instance of TextView (or descendant). The widget's .setText() method will be used with the string format of the item in the supporting data structure. The string format will be obtained by invoking .toString() on the item.

CustomListViewDemo.java

public class CustomListViewDemo extends ListActivity {
  private EfficientAdapter adap;

  private static String[] data = new String[] { "0", "1", "2", "3", "4" };

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    setContentView(R.layout.main);
    adap = new EfficientAdapter(this);
    setListAdapter(adap);
  }

  @Override
  protected void onListItemClick(ListView l, View v, int position, long id) {
    // TODO Auto-generated method stub
    super.onListItemClick(l, v, position, id);
    Toast.makeText(this, "Click-" + String.valueOf(position), Toast.LENGTH_SHORT).show();
  }

  public static class EfficientAdapter extends BaseAdapter implements Filterable {
    private LayoutInflater mInflater;
    private Bitmap mIcon1;
    private Context context;
    int firstpos=0;

    public EfficientAdapter(Context context) {
      // Cache the LayoutInflate to avoid asking for a new one each time.
      mInflater = LayoutInflater.from(context);
      this.context = context;
    }

    public View getView(final int position, View convertView, ViewGroup parent) {

      ViewHolder holder;

      if (convertView == null) {
        convertView = mInflater.inflate(R.layout.adaptor_content, null);

        holder = new ViewHolder();
        holder.sp = (Spinner) convertView.findViewById(R.id.spinner1);

        holder.ArrayAdapter_sp = new ArrayAdapter(parent.getContext(),android.R.layout.simple_spinner_item,data);
        holder.ArrayAdapter_sp.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

        holder.sp.setAdapter( holder.ArrayAdapter_sp);
        holder.sp.setOnItemSelectedListener(new OnItemSelectedListener()
        {
            private int pos = position;
            @Override
            public void onItemSelected(AdapterView<?> arg0, View arg1,
                    int p, long arg3) 
            {
                // TODO Auto-generated method stub
                 Toast.makeText(context, "select spinner " + String.valueOf(pos)+" with value ID "+p, Toast.LENGTH_SHORT).show();    

            }

            @Override
            public void onNothingSelected(AdapterView<?> arg0)
            {
                // TODO Auto-generated method stub

            }
        });




        convertView.setTag(holder);
      } else {

        holder = (ViewHolder) convertView.getTag();
      }


      return convertView;
    }

    static class ViewHolder 
    {

        Spinner sp;
        ArrayAdapter ArrayAdapter_sp;

    }

    @Override
    public Filter getFilter() {
      // TODO Auto-generated method stub
      return null;
    }

    @Override
    public long getItemId(int position) {
      // TODO Auto-generated method stub
      return 0;
    }

    @Override
    public int getCount() {
      // TODO Auto-generated method stub
      return data.length;
    }

    @Override
    public Object getItem(int position) {
      // TODO Auto-generated method stub
      return data[position];
    }

  }

}

adaptor_content.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/lineItem"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:gravity="center_vertical" >

    <Spinner
        android:id="@+id/spinner1"
        android:layout_width="314dp"
        android:layout_height="wrap_content" />

</LinearLayout>

main.xml

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_height="fill_parent" android:layout_width="fill_parent"
    >

    <ListView
        android:id="@+id/android:list"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_marginBottom="60dip"
        android:layout_marginTop="10dip"
        android:cacheColorHint="#00000000"
        android:drawSelectorOnTop="false" />

</RelativeLayout>

It works properly, I hope it is useful.

How do you debug PHP scripts?

Try Eclipse PDT to setup an Eclipse environment that has debugging features like you mentioned. The ability to step into the code is a much better way to debug then the old method of var_dump and print at various points to see where your flow goes wrong. When all else fails though and all I have is SSH and vim I still var_dump()/die() to find where the code goes south.

How can I view a git log of just one user's commits?

Show n number of logs for x user in colour by adding this little snippet in your .bashrc file.

gitlog() {
    if [ "$1" ] && [ "$2" ]; then
       git log --pretty=format:"%h%x09 %C(cyan)%an%x09 %Creset%ad%x09 %Cgreen%s" --date-order -n "$1" --author="$2"
    elif [ "$1" ]; then
       git log --pretty=format:"%h%x09 %C(cyan)%an%x09 %Creset%ad%x09 %Cgreen%s" --date-order -n "$1"
    else
        git log --pretty=format:"%h%x09 %C(cyan)%an%x09 %Creset%ad%x09 %Cgreen%s" --date-order
    fi
}

alias l=gitlog

To show the last 10 commits by Frank:

l 10 frank

To show the last 20 commits by anyone:

l 20

Angular 2.0 router not working on reloading the browser

You can use location strategy, Add useHash: true in routing file.

imports: [RouterModule.forRoot(routes, { useHash: true })]

Can a java file have more than one class?

Yes You can have more than one Class in one .Java file . But You have make one of them Public . and save .java file with same name as name of public class. when you will compile that .java file than you will get Separate .class files for each class defined in .java file .

Apart from this there are too many method for defining more than one class in one .java file .

use concept of Inner Classes.
Use Concept of Anonymous Classes .

VBA - Range.Row.Count

The best solution is to use

Cells(Rows.Count, 1).End(xlUp).Row

since it counts the number of cells until it finds the last one written.

Unlike

Range("A1", sh.Range("A1").End(xlDown)).Rows.Count

what it does is select an "from-to" range and display the row number of the last one busy.
A range implies two minimum values, so ... meanwhile A1 has a value of the range continues to count to the limit (1048576) then it is shown.

Sub test()

Dim sh As Worksheet
Set sh = ThisWorkbook.Sheets(1)
Dim k As Long

    k = Cells(Rows.Count, 1).End(xlUp).Row
    MsgBox k

    k = sh.Range("A1", sh.Range("A1").End(xlDown)).Rows.Count
    MsgBox k

End Sub

How to display the string html contents into webbrowser control?

Here is a little code. It works (for me) at any subsequent html code change of the WebBrowser control. You may adapt it to your specific needs.

    static public void SetWebBrowserHtml(WebBrowser Browser, string HtmlText)
    {
        if (Browser != null)
        {
            if (string.IsNullOrWhiteSpace(HtmlText))
            {
                // Putting a div inside body forces control to use div instead of P (paragraph)
                // when the user presses the enter button
                HtmlText = 
                        @"<html>
                    <head>
                    <meta http-equiv=""Content-Type"" content=""text/html; charset=UTF-8"" />
                    </head>
                      <div></div>
                    <body>
                    </body>
                    </html>";
            }

            if (Browser.Document == null)
            {
                Browser.Navigate("about:blank");

                //Wait for document to finish loading
                while (Browser.ReadyState != WebBrowserReadyState.Complete)
                {
                    Application.DoEvents();
                    System.Threading.Thread.Sleep(5);
                }
            }

            // Write html code
            dynamic Doc = Browser.Document.DomDocument;
            Doc.open();
            Doc.write(HtmlText);
            Doc.close();


            // Add scripts here 
            /*  
            dynamic Doc = Document.DomDocument;
            dynamic Script = Doc.getElementById("MyScriptFunctions");
            if (Script == null)
            {
                Script = Doc.createElement("script");
                Script.id = "MyScriptFunctions";
                Script.text = JavascriptFunctionsSourcecode;
                Doc.appendChild(Script);
            }                 
            */



            // Enable contentEditable   
            /*  
            if (Browser.Document.Body != null)
            {
                if (Browser.Version.Major >= 9)
                    Browser.Document.Body.SetAttribute("contentEditable", "true");
            }             
             */

            // Attach event handlers
            // Browser.Document.AttachEventHandler("onkeyup", BrowserKeyUp);
            // Browser.Document.AttachEventHandler("onkeypress", BrowserKeyPress);
            // etc...
        }
    }

Oracle SQL query for Date format

you can use this command by getting your data. this will extract your data...

select * from employees where to_char(es_date,'dd/mon/yyyy')='17/jun/2003';

How to get an ASP.NET MVC Ajax response to redirect to new page instead of inserting view into UpdateTargetId?

I m not satisfied by the best answer by the Joseph, instead of fixing the correct problem, he told that this is wrong use case. In fact there are many places for example if you are converting an old codebase to ajaxified code and there you NEED it, then you NEED it. In programming there is no excuse because its not only you who is coding its all bad and good developers and you have to work side by side. So if I don't code redirection in ajax my fellow developer can force me to have a solution for it. Just like I like to use all AMD patterned sites or mvc4, and my company can keep me away from it for a year.

So let's talk on the solution now.

I have done hell heck of ajax request and response handling and the simplest way I found out was to send status codes to the client and have one standard javascript function to understand those codes. If i simply send for example code 13 it might meant a redirect.

So a json response like { statusCode: 13, messsage: '/home/logged-in' } of course there are tons of variations proposed like { status: 'success', code: 13, url: '/home/logged-in', message: 'You are logged in now' }

etc , so up to your own choice of standard messages

Usually I Inherit from base Controller class and put my choice of standard responses like this

public JsonResult JsonDataResult(object data, string optionalMessage = "")
    {
        return Json(new { data = data, status = "success", message = optionalMessage }, JsonRequestBehavior.AllowGet);
    }

    public JsonResult JsonSuccessResult(string message)
    {
        return Json(new { data = "", status = "success", message = message }, JsonRequestBehavior.AllowGet);
    }

    public JsonResult JsonErrorResult(string message)
    {
        return Json(new { data = "", status = "error", message = message }, JsonRequestBehavior.AllowGet);
    }

    public JsonResult JsonRawResult(object data)
    {
        return Json(data, JsonRequestBehavior.AllowGet);
    }

About using $.ajax intead of Ajax.BeginForm I would love to use Jquery ajax and I do, but again its not me in the whole world to make decisions I have an application full of Ajax.BeginForm and of course I didnt do that. But i have to live with it.

So There is a success callback in begin form too, you don't need to use jquery ajax to use callbacks Something about it here Ajax.BeginForm, Calls Action, Returns JSON, How do I access JSON object in my OnSuccess JS Function?

Thanks

Programmatically set the initial view controller using Storyboards

I created a routing class to handle dynamic navigation and keep clean AppDelegate class, I hope it will help other too.

//
//  Routing.swift
// 
//
//  Created by Varun Naharia on 02/02/17.
//  Copyright © 2017 TechNaharia. All rights reserved.
//

import Foundation
import UIKit
import CoreLocation

class Routing {

    class func decideInitialViewController(window:UIWindow){
        let userDefaults = UserDefaults.standard
        if((Routing.getUserDefault("isFirstRun")) == nil)
        {
            Routing.setAnimatedAsInitialViewContoller(window: window)
        }
        else if((userDefaults.object(forKey: "User")) != nil)
        {
            Routing.setHomeAsInitialViewContoller(window: window)
        }
        else
        {
            Routing.setLoginAsInitialViewContoller(window: window)
        }

    }

    class func setAnimatedAsInitialViewContoller(window:UIWindow) {
        Routing.setUserDefault("Yes", KeyToSave: "isFirstRun")
        let mainStoryboard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
        let animatedViewController: AnimatedViewController = mainStoryboard.instantiateViewController(withIdentifier: "AnimatedViewController") as! AnimatedViewController

        window.rootViewController = animatedViewController
        window.makeKeyAndVisible()
    }

    class func setHomeAsInitialViewContoller(window:UIWindow) {
        let userDefaults = UserDefaults.standard
        let decoded  = userDefaults.object(forKey: "User") as! Data
        User.currentUser = NSKeyedUnarchiver.unarchiveObject(with: decoded) as! User

        if(User.currentUser.userId != nil && User.currentUser.userId != "")
        {
            let mainStoryboard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
            let homeViewController: HomeViewController = mainStoryboard.instantiateViewController(withIdentifier: "HomeViewController") as! HomeViewController
            let loginViewController: UINavigationController = mainStoryboard.instantiateViewController(withIdentifier: "LoginNavigationViewController") as! UINavigationController
            loginViewController.viewControllers.append(homeViewController)
            window.rootViewController = loginViewController
        }
        window.makeKeyAndVisible()
    }

    class func setLoginAsInitialViewContoller(window:UIWindow) {
        let mainStoryboard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
        let loginViewController: UINavigationController = mainStoryboard.instantiateViewController(withIdentifier: "LoginNavigationViewController") as! UINavigationController

        window.rootViewController = loginViewController
        window.makeKeyAndVisible()
    }

  class func setUserDefault(_ ObjectToSave : Any?  , KeyToSave : String)
    {
        let defaults = UserDefaults.standard

        if (ObjectToSave != nil)
        {

            defaults.set(ObjectToSave, forKey: KeyToSave)
        }

        UserDefaults.standard.synchronize()
    }

    class func getUserDefault(_ KeyToReturnValye : String) -> Any?
    {
        let defaults = UserDefaults.standard

        if let name = defaults.value(forKey: KeyToReturnValye)
        {
            return name as Any
        }
        return nil
    }

    class func removetUserDefault(_ KeyToRemove : String)
    {
        let defaults = UserDefaults.standard
        defaults.removeObject(forKey: KeyToRemove)
        UserDefaults.standard.synchronize()
    }

}

And in your AppDelegate call this

 self.window = UIWindow(frame: UIScreen.main.bounds)
 Routing.decideInitialViewController(window: self.window!)

How to get the primary IP address of the local machine on Linux and OS X?

You can also get IP version 4 address of eth0 by using this command in linux

/sbin/ip -4 -o addr show dev eth0| awk '{split($4,a,"/");print a[1]}'

Output will be like this

[root@localhost Sathish]# /sbin/ip -4 -o addr show dev eth0| awk '{split($4,a,"/");print a[1]}'
192.168.1.22

React Js conditionally applying class attributes

Based on the value of this.props.showBulkActions you can switch classes dynamically as follows.

<div ...{...this.props.showBulkActions 
? { className: 'btn-group pull-right show' } 
: { className: 'btn-group pull-right hidden' }}>

Java: How to insert CLOB into oracle database

passing the xml content as string.

table1 

ID   int
XML  CLOB



import oracle.jdbc.OraclePreparedStatement;
/*
Your Code
*/
 void insert(int id, String xml){
    try {
        String sql = "INSERT INTO table1(ID,XML) VALUES ("
                + id
                + "', ? )";
        PreparedStatement ps = conn.prepareStatement(sql);
        ((OraclePreparedStatement) ps).setStringForClob(1, xml);
        ps.execute();
        result = true;
        } catch (Exception e) {
        e.printStackTrace();
    }
  }

Python: how to print range a-z?

Hints:

import string
print string.ascii_lowercase

and

for i in xrange(0, 10, 2):
    print i

and

"hello{0}, world!".format('z')

How to list all functions in a Python module?

Use vars(module) then filter out anything that isn't a function using inspect.isfunction:

import inspect
import my_module

my_module_functions = [f for _, f in vars(my_module).values() if inspect.isfunction(f)]

The advantage of vars over dir or inspect.getmembers is that it returns the functions in the order they were defined instead of sorted alphabetically.

Also, this will include functions that are imported by my_module, if you want to filter those out to get only functions that are defined in my_module, see my question Get all defined functions in Python module.

SQL Server Insert Example

I hope this will help you

Create table :

create table users (id int,first_name varchar(10),last_name varchar(10));

Insert values into the table :

insert into users (id,first_name,last_name) values(1,'Abhishek','Anand');

++i or i++ in for loops ??

++i is slightly more efficient due to its semantics:

++i;  // Fetch i, increment it, and return it
i++;  // Fetch i, copy it, increment i, return copy

For int-like indices, the efficiency gain is minimal (if any). For iterators and other heavier-weight objects, avoiding that copy can be a real win (particularly if the loop body doesn't contain much work).

As an example, consider the following loop using a theoretical BigInteger class providing arbitrary precision integers (and thus some sort of vector-like internals):

std::vector<BigInteger> vec;
for (BigInteger i = 0; i < 99999999L; i++) {
  vec.push_back(i);
}

That i++ operation includes copy construction (i.e. operator new, digit-by-digit copy) and destruction (operator delete) for a loop that won't do anything more than essentially make one more copy of the index object. Essentially you've doubled the work to be done (and increased memory fragmentation most likely) by simply using the postfix increment where prefix would have been sufficient.

org.hibernate.exception.SQLGrammarException: could not insert [com.sample.Person]

The problem in my case was that the database name was incorrect.
I solved the problem by referring the correct database name in the field as below

<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/myDatabase</property>

How can I find all matches to a regular expression in Python?

Use re.findall or re.finditer instead.

re.findall(pattern, string) returns a list of matching strings.

re.finditer(pattern, string) returns an iterator over MatchObject objects.

Example:

re.findall( r'all (.*?) are', 'all cats are smarter than dogs, all dogs are dumber than cats')
# Output: ['cats', 'dogs']

[x.group() for x in re.finditer( r'all (.*?) are', 'all cats are smarter than dogs, all dogs are dumber than cats')]
# Output: ['all cats are', 'all dogs are']

Which keycode for escape key with jQuery

To explain where other answers haven't; the problem is your use of keypress.

Perhaps the event is just mis-named but keypress is defined to fire when when an actualcharacteris being inserted. I.e. text.
Whereas what you want is keydown/keyup, which fires whenever (before or after, respectively) the user depresses akey. I.e. those things on the keyboard.

The difference appears here because esc is a control character (literally 'non-printing character') and so doesn't write any text, thus not even firing keypress.
enter is weird, because even though you are using it as a control character (i.e. to control the UI), it is still inserting a new-line character, which will fire keypress.

Source: quirksmode

MySQL, update multiple tables with one query

You can also do this with one query too using a join like so:

UPDATE table1,table2 SET table1.col=a,table2.col2=b
WHERE items.id=month.id;

And then just send this one query, of course. You can read more about joins here: http://dev.mysql.com/doc/refman/5.0/en/join.html. There's also a couple restrictions for ordering and limiting on multiple table updates you can read about here: http://dev.mysql.com/doc/refman/5.0/en/update.html (just ctrl+f "join").

Convert .pem to .crt and .key

To extract the key and cert from a pem file:

Extract key

openssl pkey -in foo.pem -out foo.key

Another method of extracting the key...

openssl rsa -in foo.pem -out foo.key

Extract all the certs, including the CA Chain

openssl crl2pkcs7 -nocrl -certfile foo.pem | openssl pkcs7 -print_certs -out foo.cert

Extract the textually first cert as DER

openssl x509 -in foo.pem -outform DER -out first-cert.der

Oracle "Partition By" Keyword

the over partition keyword is as if we are partitioning the data by client_id creation a subset of each client id

select client_id, operation_date,
       row_number() count(*) over (partition by client_id order by client_id ) as operationctrbyclient
from client_operations e
order by e.client_id;

this query will return the number of operations done by the client_id

Java Thread Example?

Here is a simple example:

ThreadTest.java

public class ThreadTest
{
   public static void main(String [] args)
   {
      MyThread t1 = new MyThread(0, 3, 300);
      MyThread t2 = new MyThread(1, 3, 300);
      MyThread t3 = new MyThread(2, 3, 300);

      t1.start();
      t2.start();
      t3.start();
   }
}

MyThread.java

public class MyThread extends Thread
{
   private int startIdx, nThreads, maxIdx;

   public MyThread(int s, int n, int m)
   {
      this.startIdx = s;
      this.nThreads = n;
      this.maxIdx = m;
   }

   @Override
   public void run()
   {
      for(int i = this.startIdx; i < this.maxIdx; i += this.nThreads)
      {
         System.out.println("[ID " + this.getId() + "] " + i);
      }
   }
}

And some output:

[ID 9] 1
[ID 10] 2
[ID 8] 0
[ID 10] 5
[ID 9] 4
[ID 10] 8
[ID 8] 3
[ID 10] 11
[ID 10] 14
[ID 10] 17
[ID 10] 20
[ID 10] 23

An explanation - Each MyThread object tries to print numbers from 0 to 300, but they are only responsible for certain regions of that range. I chose to split it by indices, with each thread jumping ahead by the number of threads total. So t1 does index 0, 3, 6, 9, etc.

Now, without IO, trivial calculations like this can still look like threads are executing sequentially, which is why I just showed the first part of the output. On my computer, after this output thread with ID 10 finishes all at once, followed by 9, then 8. If you put in a wait or a yield, you can see it better:

MyThread.java

System.out.println("[ID " + this.getId() + "] " + i);
Thread.yield();

And the output:

[ID 8] 0
[ID 9] 1
[ID 10] 2
[ID 8] 3
[ID 9] 4
[ID 8] 6
[ID 10] 5
[ID 9] 7

Now you can see each thread executing, giving up control early, and the next executing.

Find file in directory from command line

I use ls -R, piped to grep like this:

$ ls -R | grep -i "pattern"

where -R means recursively list all the files, and -i means case-insensitive. Finally, the patter could be something like this: "std*.h" or "^io" (anything that starts with "io" in the file name)

Can I target all <H> tags with a single selector?

To tackle this with vanilla CSS look for patterns in the ancestors of the h1..h6 elements:

<section class="row">
  <header>
    <h1>AMD RX Series</h1>
    <small>These come in different brands and types</small>
  </header>
</header>

<div class="row">
  <h3>Sapphire RX460 OC 2/4GB</h3>
  <small>Available in 2GB and 4GB models</small>
</div>

If you can spot patterns you may be able to write a selector which targets what you want. Given the above example all h1..h6 elements may be targeted by combining the :first-child and :not pseudo-classes from CSS3, available in all modern browsers, like so:

.row :first-child:not(header) { /* ... */ }

In the future advanced pseudo-class selectors like :has(), and subsequent-sibling combinators (~), will provide even more control as Web standards continue to evolve over time.

eclipse won't start - no java virtual machine was found

After setting Java Path, if you are not able to open your eclipse do below steps:

Go to your Eclipse Folder where you have extracted your eclipse.

Open Eclipse file in notepad (by default it will open on notepad)

Enter two lines

-vm
C:/Program Files/Java/jdk-11.0.2/bin/javaw.exe

jdk-11.0.2 ,It should be your Java Version, which you will get by the above location.

Auto-redirect to another HTML page

One of these will work...

_x000D_

<head>_x000D_
  <meta http-equiv='refresh' content='0; URL=http://example.com/'>_x000D_
</head>

_x000D_

...or it can done with JavaScript:

_x000D_

window.location.href = 'https://example.com/';

_x000D_

Disabling vertical scrolling in UIScrollView

- (void)scrollViewDidScroll:(UIScrollView *)aScrollView
{
    [aScrollView setContentOffset: CGPointMake(aScrollView.contentOffset.x,0)];

}

you must have confirmed to UIScrollViewDelegate

aScrollView.delegate = self;

Get user's current location

<?php
$query = @unserialize (file_get_contents('http://ip-api.com/php/'));
if ($query && $query['status'] == 'success') {
echo 'Hey user from ' . $query['country'] . ', ' . $query['city'] . '!';
}
foreach ($query as $data) {
    echo $data . "<br>";
}
?>

Try this code using this source. it works!

jQuery if Element has an ID?

I seemed to have been able to solve it with:

if( $('your-selector-here').attr('id') === undefined){
    console.log( 'has no ID' )
}

How to set the matplotlib figure default size in ipython notebook?

I believe the following work in version 0.11 and above. To check the version:

$ ipython --version

It may be worth adding this information to your question.

Solution:

You need to find the file ipython_notebook_config.py. Depending on your installation process this should be in somewhere like

.config/ipython/profile_default/ipython_notebook_config.py

where .config is in your home directory.

Once you have located this file find the following lines

# Subset of matplotlib rcParams that should be different for the inline backend.
# c.InlineBackend.rc = {'font.size': 10, 'figure.figsize': (6.0, 4.0), 'figure.facecolor': 'white', 'savefig.dpi': 72, 'figure.subplot.bottom': 0.125, 'figure.edgecolor': 'white'}

Uncomment this line c.InlineBack... and define your default figsize in the second dictionary entry.

Note that this could be done in a python script (and hence interactively in IPython) using

pylab.rcParams['figure.figsize'] = (10.0, 8.0)

Convert Bitmap to File

Most of the answers are too lengthy or too short not fulfilling the purpose. For those how are looking for Java or Kotlin code to Convert bitmap to File Object. Here is the detailed article I have written on the topic. Convert Bitmap to File in Android

public static File bitmapToFile(Context context,Bitmap bitmap, String fileNameToSave) { // File name like "image.png"
        //create a file to write bitmap data
        File file = null;
        try {
            file = new File(Environment.getExternalStorageDirectory() + File.separator + fileNameToSave);
            file.createNewFile();

//Convert bitmap to byte array
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            bitmap.compress(Bitmap.CompressFormat.PNG, 0 , bos); // YOU can also save it in JPEG
            byte[] bitmapdata = bos.toByteArray();

//write the bytes in file
            FileOutputStream fos = new FileOutputStream(file);
            fos.write(bitmapdata);
            fos.flush();
            fos.close();
            return file;
        }catch (Exception e){
            e.printStackTrace();
            return file; // it will return null
        }
    }

Angular 2 - View not updating after model changes

In my case, I had a very similar problem. I was updating my view inside a function that was being called by a parent component, and in my parent component I forgot to use @ViewChild(NameOfMyChieldComponent). I lost at least 3 hours just for this stupid mistake. i.e: I didn't need to use any of those methods:

ChangeDetectorRef.detectChanges()
ChangeDetectorRef.markForCheck()
ApplicationRef.tick()

Transferring files over SSH

You need to scp something somewhere. You have scp ./styles/, so you're saying secure copy ./styles/, but not where to copy it to.

Generally, if you want to download, it will go:

# download: remote -> local
scp user@remote_host:remote_file local_file

where local_file might actually be a directory to put the file you're copying in. To upload, it's the opposite:

# upload: local -> remote
scp local_file user@remote_host:remote_file

If you want to copy a whole directory, you will need -r. Think of scp as like cp, except you can specify a file with user@remote_host:file as well as just local files.

Edit: As noted in a comment, if the usernames on the local and remote hosts are the same, then the user can be omitted when specifying a remote file.

javax.xml.bind.UnmarshalException: unexpected element (uri:"", local:"Group")

I had the same issue, my problem was, that I had two different webservices with two different wsdl-files. I generated the sources in the same package for both webservices, which seems to be a problem. I guess it's because of the ObjectFactory and perhaps also because of the package-info.java - because those are only generated once.

I solved it, by generating the sources for each webservice in a different package. This way, you also have two different ObjectFactories and package-info.java files.

libz.so.1: cannot open shared object file

This worked for me

sudo apt-get install libc6-i386 lib32stdc++6 lib32gcc1 lib32ncurses5

How to display request headers with command line curl

A command like the one below will show three sections: request headers, response headers and data (separated by CRLF). It avoids technical information and syntactical noise added by curl.

curl -vs www.stackoverflow.com 2>&1 | sed '/^* /d; /bytes data]$/d; s/> //; s/< //'

The command will produce the following output:

GET / HTTP/1.1
Host: www.stackoverflow.com
User-Agent: curl/7.54.0
Accept: */*

HTTP/1.1 301 Moved Permanently
Content-Type: text/html; charset=UTF-8
Location: https://stackoverflow.com/
Content-Length: 149
Accept-Ranges: bytes
Date: Wed, 16 Jan 2019 20:28:56 GMT
Via: 1.1 varnish
Connection: keep-alive
X-Served-By: cache-bma1622-BMA
X-Cache: MISS
X-Cache-Hits: 0
X-Timer: S1547670537.588756,VS0,VE105
Vary: Fastly-SSL
X-DNS-Prefetch-Control: off
Set-Cookie: prov=e4b211f7-ae13-dad3-9720-167742a5dff8; domain=.stackoverflow.com; expires=Fri, 01-Jan-2055 00:00:00 GMT; path=/; HttpOnly

<head><title>Document Moved</title></head>
<body><h1>Object Moved</h1>This document may be found <a HREF="https://stackoverflow.com/">here</a></body>

Description:

-vs - add headers (-v) but remove progress bar (-s)
2>&1 - combine stdout and stderr into single stdout
sed - edit response produced by curl using the commands below
/^* /d - remove lines starting with '* ' (technical info)
/bytes data]$/d - remove lines ending with 'bytes data]' (technical info)
s/> // - remove '> ' prefix
s/< // - remove '< ' prefix

How to count number of files in each directory?

THis could be another way to browse through the directory structures and provide depth results.

find . -type d  | awk '{print "echo -n \""$0"  \";ls -l "$0" | grep -v total | wc -l" }' | sh

Jackson enum Serializing and DeSerializer

Here is another example that uses string values instead of a map.

public enum Operator {
    EQUAL(new String[]{"=","==","==="}),
    NOT_EQUAL(new String[]{"!=","<>"}),
    LESS_THAN(new String[]{"<"}),
    LESS_THAN_EQUAL(new String[]{"<="}),
    GREATER_THAN(new String[]{">"}),
    GREATER_THAN_EQUAL(new String[]{">="}),
    EXISTS(new String[]{"not null", "exists"}),
    NOT_EXISTS(new String[]{"is null", "not exists"}),
    MATCH(new String[]{"match"});

    private String[] value;

    Operator(String[] value) {
        this.value = value;
    }

    @JsonValue
    public String toStringOperator(){
        return value[0];
    }

    @JsonCreator
    public static Operator fromStringOperator(String stringOperator) {
        if(stringOperator != null) {
            for(Operator operator : Operator.values()) {
                for(String operatorString : operator.value) {
                    if (stringOperator.equalsIgnoreCase(operatorString)) {
                        return operator;
                    }
                }
            }
        }
        return null;
    }
}

How to get first character of a string in SQL?

It is simple to achieve by the following

DECLARE @SomeString NVARCHAR(20) = 'This is some string'
DECLARE @Result NVARCHAR(20)

Either

SET @Result = SUBSTRING(@SomeString, 2, 3)
SELECT @Result

@Result = his

SET @Result = LEFT(@SomeString, 6)
SELECT @Result

@Result = This i

How to read an external properties file in Maven

Using the suggested Maven properties plugin I was able to read in a buildNumber.properties file that I use to version my builds.

  <build>    
    <plugins>
      <plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>properties-maven-plugin</artifactId>
        <version>1.0-alpha-1</version>
        <executions>
          <execution>
            <phase>initialize</phase>
            <goals>
              <goal>read-project-properties</goal>
            </goals>
            <configuration>
              <files>
                <file>${basedir}/../project-parent/buildNumber.properties</file>
              </files>
            </configuration>
          </execution>
        </executions>
      </plugin>
   </plugins>

D3 transform scale and translate

I realize this question is fairly old, but wanted to share a quick demo of group transforms, paths/shapes, and relative positioning, for anyone else who found their way here looking for more info:

http://bl.ocks.org/dustinlarimer/6050773

CSS :: child set to change color on parent hover, but changes also when hovered itself

If you don't care about supporting old browsers, you can use :not() to exclude that element:

.parent:hover span:not(:hover) {
    border: 10px solid red;
}

Demo: http://jsfiddle.net/vz9A9/1/

If you do want to support them, the I guess you'll have to either use JavaScript or override the CSS properties again:

.parent span:hover {
    border: 10px solid green;
}

Bigger Glyphicons

The .btn-lg class has the following CSS in Bootstrap 3 (link):

.btn-lg {
  padding: 10px 16px;
  font-size: 18px;
  line-height: 1.33;
  border-radius: 6px;
}

If you apply the same font-size and line-height to your span (either .glyphicon-link or a newly created .glyphicons-lg if you're going to use this effect in more than one instance), you'll get a Glyphicon the same size as the large button.

How to delete a workspace in Perforce (using p4v)?

It could also be done without a visual client with the following small script.

$ cat ~/bin/pdel

#!/bin/sh

#Todo: add error handling

( p4 -c $1 client -o | perl -pne 's/\blocked\s//' | p4 -c $1  client -i ) && p4 client -d $1

Run php script as daemon process

you can check pm2 here is, http://pm2.keymetrics.io/

create a ssh file, such as worker.sh put into your php script that you will deal with.

worker.sh

php /path/myscript.php

daemon start

pm2 start worker.sh

Cheers, that is it.

Change the encoding of a file in Visual Studio Code

So here's how to do that:

In the bottom bar of VSCode, you'll see the label UTF-8. Click it. A popup opens. Click Save with encoding. You can now pick a new encoding for that file.

Alternatively, you can change the setting globally in Workspace/User settings using the setting "files.encoding": "utf8". If using the graphical settings page in VSCode, simply search for encoding. Do note however that this only applies to newly created files.

filters on ng-model in an input

If you are using read only input field, you can use ng-value with filter.

for example:

ng-value="price | number:8"

Check if input value is empty and display an alert

Check empty input with removing space(if user enter space) from input using trim

$(document).ready(function(){     
       $('#button').click(function(){
            if($.trim($('#fname').val()) == '')
           {
               $('#fname').css("border-color", "red");
               alert("Empty"); 
           }
     });
});

How to check model string property for null in a razor view

Try this first, you may be passing a Null Model:

@if (Model != null && !String.IsNullOrEmpty(Model.ImageName))
{
    <label for="Image">Change picture</label>
}
else
{ 
    <label for="Image">Add picture</label>
}

Otherise, you can make it even neater with some ternary fun! - but that will still error if your model is Null.

<label for="Image">@(String.IsNullOrEmpty(Model.ImageName) ? "Add" : "Change") picture</label>

Rename Pandas DataFrame Index

df.index.rename('new name', inplace=True)

Is the only one that does the job for me (pandas 0.22.0).
Without the inplace=True, the name of the index is not set in my case.

VBA (Excel) Initialize Entire Array without Looping

This function works with variables for size and initial value it combines tbur & Filipe responses.

Function ArrayIniValue(iSize As Integer, iValue As Integer)
Dim sIndex As String
sIndex = "INDEX(Row(1:" & iSize & "),)"
ArrayIniValue = Evaluate("=Transpose(" & sIndex & "-" & sIndex & "+" & iValue & ")")
End Function

Called this way:

myArray = ArrayIniValue(350, 13)

Communicating between a fragment and an activity - best practices

I'm not sure I really understood what you want to do, but the suggested way to communicate between fragments is to use callbacks with the Activity, never directly between fragments. See here http://developer.android.com/training/basics/fragments/communicating.html

How to run a shell script at startup

A simple approach is to add a line in /etc/rc.local :

/PATH/TO/MY_APP &

or if you want to run the command as a special user :

su - USER_FOOBAR -c /PATH/TO/MY_APP &

(the trailing ampersand backgrounds the process and allows the rc.local to continue executing)

If you want a full init script, debian distro have a template file, so :

cp /etc/init.d/skeleton /etc/init.d/your_app

and adapt it a bit.

Using a batch to copy from network drive to C: or D: drive

Just do the following change

echo off
cls

echo Would you like to do a backup?

pause

copy "\\My_Servers_IP\Shared Drive\FolderName\*" C:\TEST_BACKUP_FOLDER

pause

TypeError: coercing to Unicode: need string or buffer

You're trying to open each file twice! First you do:

infile=open('110331_HS1A_1_rtTA.result','r')

and then you pass infile (which is a file object) to the open function again:

with open (infile, mode='r', buffering=-1)

open is of course expecting its first argument to be a file name, not an opened file!

Open the file once only and you should be fine.

Count number of files within a directory in Linux?

this is one:

ls -l . | egrep -c '^-'

Note:

ls -1 | wc -l

Which means: ls: list files in dir

-1: (that's a ONE) only one entry per line. Change it to -1a if you want hidden files too

|: pipe output onto...

wc: "wordcount"

-l: count lines.

Cannot instantiate the type List<Product>

List is an interface. Interfaces cannot be instantiated. Only concrete types can be instantiated. You probably want to use an ArrayList, which is an implementation of the List interface.

List<Product> products = new ArrayList<Product>();

How can I rollback a git repository to a specific commit?

In github, the easy way is to delete the remote branch in the github UI, under branches tab. You have to make sure remove following settings to make the branch deletable:

Not a default branch
No opening poll requests.
The branch is not protected.

Now recreate it in your local repository to point to the previous commit point. and add it back to remote repo.

git checkout -b master 734c2b9b   # replace with your commit point

Then push the local branch to remote

git push -u origin master

Add back the default branch and branch protection, etc.

Hide a EditText & make it visible by clicking a menu

Try phoneNumber.setVisibility(View.GONE);

What is an example of the simplest possible Socket.io example?

Edit: I feel it's better for anyone to consult the excellent chat example on the Socket.IO getting started page. The API has been quite simplified since I provided this answer. That being said, here is the original answer updated small-small for the newer API.

Just because I feel nice today:

index.html

<!doctype html>
<html>
    <head>
        <script src='/socket.io/socket.io.js'></script>
        <script>
            var socket = io();

            socket.on('welcome', function(data) {
                addMessage(data.message);

                // Respond with a message including this clients' id sent from the server
                socket.emit('i am client', {data: 'foo!', id: data.id});
            });
            socket.on('time', function(data) {
                addMessage(data.time);
            });
            socket.on('error', console.error.bind(console));
            socket.on('message', console.log.bind(console));

            function addMessage(message) {
                var text = document.createTextNode(message),
                    el = document.createElement('li'),
                    messages = document.getElementById('messages');

                el.appendChild(text);
                messages.appendChild(el);
            }
        </script>
    </head>
    <body>
        <ul id='messages'></ul>
    </body>
</html>

app.js

var http = require('http'),
    fs = require('fs'),
    // NEVER use a Sync function except at start-up!
    index = fs.readFileSync(__dirname + '/index.html');

// Send index.html to all requests
var app = http.createServer(function(req, res) {
    res.writeHead(200, {'Content-Type': 'text/html'});
    res.end(index);
});

// Socket.io server listens to our app
var io = require('socket.io').listen(app);

// Send current time to all connected clients
function sendTime() {
    io.emit('time', { time: new Date().toJSON() });
}

// Send current time every 10 secs
setInterval(sendTime, 10000);

// Emit welcome message on connection
io.on('connection', function(socket) {
    // Use socket to communicate with this particular client only, sending it it's own id
    socket.emit('welcome', { message: 'Welcome!', id: socket.id });

    socket.on('i am client', console.log);
});

app.listen(3000);

TortoiseGit-git did not exit cleanly (exit code 1)

I have faced this situation and in my case, I was using two git id's simultaneously. so what it does it will update the credentials in the credential Manager

Control Panel\User Accounts\Credential Manager

as shown

inside Credential Manager, you will find the git hub credentials inside the Generic credentials there you have to update your git credentials.

SMTP connect() failed PHPmailer - PHP

You need to add the Host parameter

$mail->Host = "ssl://smtp.gmail.com";

Also, check if you have open_ssl enabled.

<?php
echo !extension_loaded('openssl')?"Not Available":"Available";

jQuery Validate - Enable validation for hidden fields

The validation was working for me on form submission, but it wasn't doing the reactive event driven validation on input to the chosen select lists.

To fix this I added the following to manually trigger the jquery validation event that gets added by the library:

$(".chosen-select").each(function() {
  $(this).chosen().on("change", function() {
    $(this).parents(".form-group").find("select.form-control").trigger("focusout.validate");
  });
});

jquery.validate will now add the .valid class to the underlying select list.

Caveat: This does require a consistent html pattern for your form inputs. In my case, each input filed is wrapped in a div.form-group, and each input has .form-control.

python : list index out of range error while iteratively popping elements

What Mark Rushakoff said is true, but if you iterate in the opposite direction, it is possible to remove elements from the list in the for-loop as well. E.g.,

x = [1,2,3,0,0,1]
for i in range(len(x)-1, -1, -1):
    if x[i] == 0:
        x.pop(i)

It's like a tall building that falls from top to bottom: even if it is in the middle of collapse, you still can "enter" into it and visit yet-to-be-collapsed floors.

How can I check Drupal log files?

We came across many situation where we need to check error and error logs to figure out issue we are facing we can check by possibly following method:

1.) On blank screen Some time we got nothing but blank screen instead of our site or message written The website encountered an unexpected error. Please try again later , so we can Print Errors to the Screen by adding

error_reporting(E_ALL);

ini_set('display_errors', TRUE); 

ini_set('display_startup_errors', TRUE);

in index.php at top.;

2.) We should enable optional core module for Database Logging at /admin/build/modules, and then we can check logs your_domain_name/admin/reports/dblog

3.) We can use drush command also to check logs drush watchdog-show it will show recent ten message

or if we want to continue showing logs with more information we can user
drush watchdog-show --tail --full.

4.) Also we can enable core Syslog module this module logs events of operating system of any web server.

Extract time from moment js object

If you read the docs (http://momentjs.com/docs/#/displaying/) you can find this format:

moment("2015-01-16T12:00:00").format("hh:mm:ss a")

See JS Fiddle http://jsfiddle.net/Bjolja/6mn32xhu/

Regular expression to match balanced parentheses

(?<=\().*(?=\))

If you want to select text between two matching parentheses, you are out of luck with regular expressions. This is impossible^(*).

This regex just returns the text between the first opening and the last closing parentheses in your string.

^(*) Unless your regex engine has features like balancing groups or recursion. The number of engines that support such features is slowly growing, but they are still not a commonly available.

How do I turn a C# object into a JSON string in .NET?

You could use the JavaScriptSerializer class (add reference to System.Web.Extensions):

using System.Web.Script.Serialization;

var json = new JavaScriptSerializer().Serialize(obj);

A full example:

using System;
using System.Web.Script.Serialization;

public class MyDate
{
    public int year;
    public int month;
    public int day;
}

public class Lad
{
    public string firstName;
    public string lastName;
    public MyDate dateOfBirth;
}

class Program
{
    static void Main()
    {
        var obj = new Lad
        {
            firstName = "Markoff",
            lastName = "Chaney",
            dateOfBirth = new MyDate
            {
                year = 1901,
                month = 4,
                day = 30
            }
        };
        var json = new JavaScriptSerializer().Serialize(obj);
        Console.WriteLine(json);
    }
}

Returning unique_ptr from functions

I think it's perfectly explained in item 25 of Scott Meyers' Effective Modern C++. Here's an excerpt:

The part of the Standard blessing the RVO goes on to say that if the conditions for the RVO are met, but compilers choose not to perform copy elision, the object being returned must be treated as an rvalue. In effect, the Standard requires that when the RVO is permitted, either copy elision takes place or std::move is implicitly applied to local objects being returned.

Here, RVO refers to return value optimization, and if the conditions for the RVO are met means returning the local object declared inside the function that you would expect to do the RVO, which is also nicely explained in item 25 of his book by referring to the standard (here the local object includes the temporary objects created by the return statement). The biggest take away from the excerpt is either copy elision takes place or std::move is implicitly applied to local objects being returned. Scott mentions in item 25 that std::move is implicitly applied when the compiler choose not to elide the copy and the programmer should not explicitly do so.

In your case, the code is clearly a candidate for RVO as it returns the local object p and the type of p is the same as the return type, which results in copy elision. And if the compiler chooses not to elide the copy, for whatever reason, std::move would've kicked in to line 1.

How to set portrait and landscape media queries in css?

iPad Media Queries (All generations - including iPad mini)

Thanks to Apple's work in creating a consistent experience for users, and easy time for developers, all 5 different iPads (iPads 1-5 and iPad mini) can be targeted with just one CSS media query. The next few lines of code should work perfect for a responsive design.

iPad in portrait & landscape

@media only screen 
and (min-device-width : 768px) 
and (max-device-width : 1024px)  { /* STYLES GO HERE */}

iPad in landscape

@media only screen 
and (min-device-width : 768px) 
and (max-device-width : 1024px) 
and (orientation : landscape) { /* STYLES GO HERE */}

iPad in portrait

@media only screen 
and (min-device-width : 768px) 
and (max-device-width : 1024px) 
and (orientation : portrait) { /* STYLES GO HERE */ }

iPad 3 & 4 Media Queries

If you're looking to target only 3rd and 4th generation Retina iPads (or tablets with similar resolution) to add @2x graphics, or other features for the tablet's Retina display, use the following media queries.

Retina iPad in portrait & landscape

@media only screen 
and (min-device-width : 768px) 
and (max-device-width : 1024px)
and (-webkit-min-device-pixel-ratio: 2) { /* STYLES GO HERE */}

Retina iPad in landscape

@media only screen 
and (min-device-width : 768px) 
and (max-device-width : 1024px) 
and (orientation : landscape)
and (-webkit-min-device-pixel-ratio: 2) { /* STYLES GO HERE */}

Retina iPad in portrait

@media only screen 
and (min-device-width : 768px) 
and (max-device-width : 1024px) 
and (orientation : portrait)
and (-webkit-min-device-pixel-ratio: 2) { /* STYLES GO HERE */ }

iPad 1 & 2 Media Queries

If you're looking to supply different graphics or choose different typography for the lower resolution iPad display, the media queries below will work like a charm in your responsive design!

iPad 1 & 2 in portrait & landscape

@media only screen 
and (min-device-width : 768px) 
and (max-device-width : 1024px) 
and (-webkit-min-device-pixel-ratio: 1){ /* STYLES GO HERE */}

iPad 1 & 2 in landscape

@media only screen 
and (min-device-width : 768px) 
and (max-device-width : 1024px) 
and (orientation : landscape)
and (-webkit-min-device-pixel-ratio: 1)  { /* STYLES GO HERE */}

iPad 1 & 2 in portrait

@media only screen 
and (min-device-width : 768px) 
and (max-device-width : 1024px) 
and (orientation : portrait) 
and (-webkit-min-device-pixel-ratio: 1) { /* STYLES GO HERE */ }

Source: http://stephen.io/mediaqueries/

Iterating through a list in reverse order in java

Reason : "Don't know why there is no descendingIterator with ArrayList..."

Since array list doesnot keep the list in the same order as data has been added to list. So, never use Arraylist .

Linked list will keep the data in same order of ADD to list.

So , above in my example, i used ArrayList() in order to make user to twist their mind and make them to workout something from their side.

Instead of this

List<String> list = new ArrayList<String>();

USE:

List<String> list = new LinkedList<String>();

list.add("ravi");

list.add("kant");

list.add("soni");

// Iterate to disply : result will be as ---     ravi kant soni

for (String name : list) {
  ...
}

//Now call this method

Collections.reverse(list);

// iterate and print index wise : result will be as ---     soni kant ravi

for (String name : list) {
  ...
}

How do you add an action to a button programmatically in xcode

UIButton *btnNotification=[UIButton buttonWithType:UIButtonTypeCustom];
btnNotification.frame=CGRectMake(130,80,120,40);
btnNotification.backgroundColor=[UIColor greenColor];
[btnNotification setTitle:@"create Notification" forState:UIControlStateNormal];
[btnNotification addTarget:self action:@selector(btnClicked) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:btnNotification];


}

-(void)btnClicked
{
    // Here You can write functionality 

}

mongoError: Topology was destroyed

Here what I did, It works fine. Issue was gone after adding below options.

const dbUrl = "mongodb://localhost:27017/sampledb";
const options =  { useMongoClient: true, keepAlive: 1, connectTimeoutMS: 30000, reconnectTries: 30, reconnectInterval: 5000, useNewUrlParser: true }
mongoose.connect(dbUrl,options, function(
  error
) {
  if (error) {
    console.log("mongoerror", error);
  } else {
    console.log("connected");
  }

});

Centering FontAwesome icons vertically and horizontally

I have used transform to correct the offset. It works great with round icons like the life ring.

<span class="fa fa-life-ring"></span>

.fa {
    transform: translateY(-4%);
}

Warning comparison between pointer and integer

It should be

if (*message == '\0')

In C, simple quotes delimit a single character whereas double quotes are for strings.

Youtube iframe wmode issue

recently I saw that sometimes the flash player doesn't recognize &wmode=opaque, istead you should pass &WMode=opaque too (notice the uppercase).

Detect if the app was launched/opened from a push notification

Xcode 10 Swift 4.2

func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject]) {

    let state : UIApplicationState = application.applicationState
    if (state == .Inactive || state == .Background) {
        // coming from background
    } else {
        // App is running in foreground
    }
}

adb is not recognized as internal or external command on windows

If you go to your android-sdk/tools folder I think you'll find a message :

The adb tool has moved to platform-tools/

If you don't see this directory in your SDK, launch the SDK and AVD Manager (execute the android tool) and install "Android SDK Platform-tools"

Please also update your PATH environment variable to include the platform-tools/ directory, so you can execute adb from any location.

So you should also add C:/android-sdk/platform-tools to you environment path. Also after you modify the PATH variable make sure that you start a new CommandPrompt window.

In MySQL, can I copy one row to insert into the same table?

If your table's primary key field is an auto increment field, then you can use query with columns. For example, your table named test_tbl has 3 fields as id, name, age. id is a primary key field and auto increment, so you can use the following query to duplicate the row:

INSERT INTO `test_tbl` (`name`,`age`) SELECT `name`,`age` FROM `test_tbl`;

This query results in duplicating every row.

If your table's primary key field is not an auto increment field, then you can use the following method:

INSERT INTO `test_tbl` (`id`,`name`,`age`)
  SELECT 20,`name`,`age` FROM `test_tbl` WHERE id = 19;

The result of this query is a duplicate row of id=19 inserted as id=20.

What's the fastest way to read a text file line-by-line?

There's a good topic about this in Stack Overflow question Is 'yield return' slower than "old school" return?.

It says:

ReadAllLines loads all of the lines into memory and returns a string[]. All well and good if the file is small. If the file is larger than will fit in memory, you'll run out of memory.

ReadLines, on the other hand, uses yield return to return one line at a time. With it, you can read any size file. It doesn't load the whole file into memory.

Say you wanted to find the first line that contains the word "foo", and then exit. Using ReadAllLines, you'd have to read the entire file into memory, even if "foo" occurs on the first line. With ReadLines, you only read one line. Which one would be faster?

batch script - read line by line

The "call" solution has some problems.

It fails with many different contents, as the parameters of a CALL are parsed twice by the parser.
These lines will produce more or less strange problems

one
two%222
three & 333
four=444
five"555"555"
six"&666
seven!777^!
the next line is empty

the end

Therefore you shouldn't use the value of %%a with a call, better move it to a variable and then call a function with only the name of the variable.

@echo off
SETLOCAL DisableDelayedExpansion
FOR /F "usebackq delims=" %%a in (`"findstr /n ^^ t.txt"`) do (
    set "myVar=%%a"
    call :processLine myVar
)
goto :eof

:processLine
SETLOCAL EnableDelayedExpansion
set "line=!%1!"
set "line=!line:*:=!"
echo(!line!
ENDLOCAL
goto :eof

Illegal mix of collations (utf8_unicode_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation '='

This happens where a column is explicitly set to a different collation or the default collation is different in the table queried.

if you have many tables you want to change collation on run this query:

select concat('ALTER TABLE ', t.table_name , ' CONVERT TO CHARACTER 
SET utf8 COLLATE utf8_unicode_ci;') from (SELECT table_name FROM 
information_schema.tables where table_schema='SCHRMA') t;

this will output the queries needed to convert all the tables to use the correct collation per column

How to print table using Javascript?

My fellows,

In January 2019 I used a code made before:

 <script type="text/javascript">   
    function imprimir() {
        var divToPrint=document.getElementById("ConsutaBPM");
        newWin= window.open("");
        newWin.document.write(divToPrint.outerHTML);
        newWin.print();
        newWin.close();
    }
</script>

To undestand: ConsutaBPM is a DIV which contains inside phrases and tables. I wanted to print ALL, titles, table, and others. The problem was when TRIED to print the TABLE...

The table mas be defined with BORDER and CELLPADDING:

<table border='1' cellpadding='1' id='Tablbpm1' >

It worked fine!!!

find . -type f -exec chmod 644 {} ;

I need this so often that I created a function in my ~/.bashrc file:

chmodf() {
        find $2 -type f -exec chmod $1 {} \;
}
chmodd() {
        find $2 -type d -exec chmod $1 {} \;
}

Now I can use these shortcuts:

chmodd 0775 .
chmodf 0664 .

How to replace list item in best way

Use FindIndex and lambda to find and replace your values:

int j = listofelements.FindIndex(i => i.Contains(valueFieldValue.ToString())); //Finds the item index

lstString[j] = lstString[j].Replace(valueFieldValue.ToString(), value.ToString()); //Replaces the item by new value

SQL Inner join 2 tables with multiple column conditions and update

UPDATE
    T1
SET
    T1.Inci = T2.Inci 
FROM
    T1
INNER JOIN
    T2
ON
    T1.Brands = T2.Brands
AND
    T1.Category= T2.Category
AND
    T1.Date = T2.Date

jQuery duplicate DIV into another DIV

_x000D_

$(document).ready(function(){  _x000D_
    $("#btn_clone").click(function(){  _x000D_
        $("#a_clone").clone().appendTo("#b_clone");  _x000D_
    });  _x000D_
});

_x000D_

.container{_x000D_
    padding: 15px;_x000D_
    border: 12px solid #23384E;_x000D_
    background: #28BAA2;_x000D_
    margin-top: 10px;_x000D_
}

_x000D_

<!DOCTYPE html>  _x000D_
<html>  _x000D_
<head>  _x000D_
<title>jQuery Clone Method</title> _x000D_
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script> _x000D_
_x000D_
_x000D_
</head>  _x000D_
<body> _x000D_
<div class="container">_x000D_
<p id="a_clone"><b> This is simple example of clone method.</b></p>  _x000D_
<p id="b_clone"><b>Note:</b>Click The Below button Click Me</p>  _x000D_
<button id="btn_clone">Click Me!</button>  _x000D_
</div> _x000D_
</body>  _x000D_
</html>

_x000D_

For more detail and demo

How to export collection to CSV in MongoDB?

Also if you want to export inner json fields use dot (. operator).

JSON record:

{
    "_id" : "00118685076F2C77",
    "value" : {
        "userIds" : [ 
            "u1"
        ],
        "deviceId" : "dev"
}

mongoexport command with dot operator (using mongo version 3.4.7):

./mongoexport --host localhost --db myDB --collection myColl --type=csv --out out.csv --fields value.deviceId,value.userIds

Output csv:

value.deviceId,value.userIds
d1,"[""u1""]"
d2,"[""u2""]"

Note: Make sure you do not export an array. It would corrupt the CSV format like field userIds shown above

'dependencies.dependency.version' is missing error, but version is managed in parent

I had the same error, I forgot to add the child dependencies in the <dependencyManagement>. For example in the parent pom:

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>com.sw.system4</groupId>
            <artifactId>system4-data</artifactId><!-- child artifact id -->
            <version>${project.version}</version>
        <dependency>

        <!-- add all third party libraries ... -->

    </dependencies>
<dependencyManagement>

Parse string to DateTime in C#

You can also use XmlConvert.ToDateString

var dateStr = "2011-03-21 13:26";
var parsedDate = XmlConvert.ToDateTime(dateStr, "yyyy-MM-dd hh:mm");

It is good to specify the date kind, the code is:

var anotherParsedDate = DateTime.ParseExact(dateStr, "yyyy-MM-dd hh:mm", CultureInfo.InvariantCulture, DateTimeStyles.AssumeUniversal);

More details on different parsing options http://amir-shenodua.blogspot.ie/2017/06/datetime-parsing-in-net.html

Android Activity without ActionBar

Default style you getting in res/value/style.xml like

  <style name="AppTheme.NoActionBar">
        <item name="windowActionBar">false</item>
        <item name="windowNoTitle">true</item>
  </style>

And just the below like in your activity tag,

android:theme="@style/AppTheme.NoActionBar"

How to remove trailing whitespace in code, using another script?

It's a bit surprising seeing multiple answers suggesting to use python for this task, as there's no need to write a multi-line program for this.

Standard Unix tools like sed, awk or perl can achieve this easily straight from the command-line.

e.g anywhere you have perl (Windows, Mac, Linux) the following should achieve what the OP asked:

perl -i -pe 's/[ \t]+$//;' files...

Explanation of the arguments to perl:

-i   # run the edit "in place" (modify the original file)
-p   # implies a loop with a final print over every input line
-e   # next arg is the perl expression to apply (to every line)

s/[ \t]$// is a substitution regex s/FROM/TO/: replace every trailing (end of line) non-empty space (spaces or tabs) with nothing.

Advantages:

One liner, no programming needed
Works on multiple (any number) of files
Works correctly on standard-input (no file arguments given)

Edit:

Newer versions of perl support \h (any horizontal-space character), so the solution becomes even shorter:

perl -i -pe 's/\h+$//;' files...

More generally, if you want to modify any number of files directly from the command line, replacing every appearance of FOO with BAR, you may always use this generic template:

perl -i -pe 's/FOO/BAR/' files...

How to make tesseract to recognize only numbers, when they are mixed with letters?

This feature is not supported in version 4. You can still use it via -c tessedit_char_whitelist=0123456789 with "--oem 0" which reverts to the old model.

There is a bounty to fix this issue.

Possible workarounds:

As stated by @amitdo

Using the --oem 0 option (the legacy engine will be used)
Retraining (fine tuning) #751 (comment)
Post-processing #751 (comment)

How to use Global Variables in C#?

First examine if you really need a global variable instead using it blatantly without consideration to your software architecture.

Let's assuming it passes the test. Depending on usage, Globals can be hard to debug with race conditions and many other "bad things", it's best to approach them from an angle where you're prepared to handle such bad things. So,

Wrap all such Global variables into a single static class (for manageability).
Have Properties instead of fields(='variables'). This way you have some mechanisms to address any issues with concurrent writes to Globals in the future.

The basic outline for such a class would be:

public class Globals
{
    private static bool _expired;
    public static bool Expired 
    {
        get
        {
            // Reads are usually simple
            return _expired;
        }
        set
        {
            // You can add logic here for race conditions,
            // or other measurements
            _expired = value;
        }
    }
    // Perhaps extend this to have Read-Modify-Write static methods
    // for data integrity during concurrency? Situational.
}

Usage from other classes (within same namespace)

// Read
bool areWeAlive = Globals.Expired;

// Write
// past deadline
Globals.Expired = true;

System.loadLibrary(...) couldn't find native library in my case

defaultConfig {
ndk {
            abiFilters "armeabi-v7a", "x86", "armeabi", "mips"
    }
}

Just add these line in build.gradle app level

Colspan/Rowspan for elements whose display is set to table-cell

create table in postgreSQL

Replace bigint(20) not null auto_increment by bigserial not null and datetime by timestamp

What does functools.wraps do?

this is the source code about wraps:

WRAPPER_ASSIGNMENTS = ('__module__', '__name__', '__doc__')

WRAPPER_UPDATES = ('__dict__',)

def update_wrapper(wrapper,
                   wrapped,
                   assigned = WRAPPER_ASSIGNMENTS,
                   updated = WRAPPER_UPDATES):

    """Update a wrapper function to look like the wrapped function

       wrapper is the function to be updated
       wrapped is the original function
       assigned is a tuple naming the attributes assigned directly
       from the wrapped function to the wrapper function (defaults to
       functools.WRAPPER_ASSIGNMENTS)
       updated is a tuple naming the attributes of the wrapper that
       are updated with the corresponding attribute from the wrapped
       function (defaults to functools.WRAPPER_UPDATES)
    """
    for attr in assigned:
        setattr(wrapper, attr, getattr(wrapped, attr))
    for attr in updated:
        getattr(wrapper, attr).update(getattr(wrapped, attr, {}))
    # Return the wrapper so this can be used as a decorator via partial()
    return wrapper

def wraps(wrapped,
          assigned = WRAPPER_ASSIGNMENTS,
          updated = WRAPPER_UPDATES):
    """Decorator factory to apply update_wrapper() to a wrapper function

   Returns a decorator that invokes update_wrapper() with the decorated
   function as the wrapper argument and the arguments to wraps() as the
   remaining arguments. Default arguments are as for update_wrapper().
   This is a convenience function to simplify applying partial() to
   update_wrapper().
    """
    return partial(update_wrapper, wrapped=wrapped,
                   assigned=assigned, updated=updated)

Atom menu is missing. How do I re-enable

Press Alt + v and select Toggle menu bar option.

how to show only even or odd rows in sql server 2008?

for SQL > odd:

select * from id in(select id from employee where id%2=1)

for SQL > Even:

select * from id in(select id from employee where id%2=0).....f5

What's NSLocalizedString equivalent in Swift?

When you to translate, say from English, where a phrase is the same, to another language where it is different (because of the gender, verb conjugations or declension) the simplest NSString form in Swift that works in all cases is the three arguments one. For example, the English phrase "previous was", is translated differently to Russian for the case of "weight" ("?????????? ???") and for "waist" ("?????????? ????").

In this case you need two different translation for one Source (in terms of XLIFF tool recommended in WWDC 2018). You cannot achieve it with two argument NSLocalizedString, where "previous was" will be the same both for the "key" and the English translation (i.e. for the value). The only way is to use the three argument form

NSLocalizedString("previousWasFeminine", value: "previous was", comment: "previousWasFeminine")

NSLocalizedString("previousWasMasculine", value: "previous was", comment: "previousWasMasculine")

where keys ("previousWasFeminine" and "previousWasMasculine") are different.

I know that the general advice is to translate the phrase as the whole, however, sometimes it too time consuming and inconvenient.

Android Studio: Module won't show up in "Edit Configuration"

New project. Fixed this issue by clicking on "File->Sync Project with Gradle Files"

How to approach a "Got minus one from a read call" error when connecting to an Amazon RDS Oracle instance

The immediate cause of the problem is that the JDBC driver has attempted to read from a network Socket that has been closed by "the other end".

This could be due to a few things:

If the remote server has been configured (e.g. in the "SQLNET.ora" file) to not accept connections from your IP.
If the JDBC url is incorrect, you could be attempting to connect to something that isn't a database.
If there are too many open connections to the database service, it could refuse new connections.

Given the symptoms, I think the "too many connections" scenario is the most likely. That suggests that your application is leaking connections; i.e. creating connections and then failing to (always) close them.

How do I check if a string is valid JSON in Python?

You can try to do json.loads(), which will throw a ValueError if the string you pass can't be decoded as JSON.

In general, the "Pythonic" philosophy for this kind of situation is called EAFP, for Easier to Ask for Forgiveness than Permission.

How to show form input fields based on select value?

$('#dbType').change(function(){

   var selection = $(this).val();
   if(selection == 'other')
   {
      $('#otherType').show();
   }
   else
   {
      $('#otherType').hide();
   } 

});

Script Tag - async & defer

Faced same kind of problem and now clearly understood how both will works.Hope this reference link will be helpful...

Async

When you add the async attribute to your script tag, the following will happen.

<script src="myfile1.js" async></script>
<script src="myfile2.js" async></script>

Make parallel requests to fetch the files.
Continue parsing the document as if it was never interrupted.
Execute the individual scripts the moment the files are downloaded.

Defer

Defer is very similar to async with one major differerence. Here’s what happens when a browser encounters a script with the defer attribute.

<script src="myfile1.js" defer></script>
<script src="myfile2.js" defer></script>

Make parallel requests to fetch the individual files.
Continue parsing the document as if it was never interrupted.
Finish parsing the document even if the script files have downloaded.
Execute each script in the order they were encountered in the document.

Reference :Difference between Async and Defer

How to navigate a few folders up?

if c:\folder1\folder2\folder3\bin is the path then the following code will return the path base folder of bin folder

//string directory=System.IO.Directory.GetParent(Environment.CurrentDirectory).ToString());

string directory=System.IO.Directory.GetParent(Environment.CurrentDirectory).ToString();

ie,c:\folder1\folder2\folder3

if you want folder2 path then you can get the directory by

string directory = System.IO.Directory.GetParent(System.IO.Directory.GetParent(Environment.CurrentDirectory).ToString()).ToString();

then you will get path as c:\folder1\folder2\

Saving images in Python at a very high quality

Okay, I found spencerlyon2's answer working. However, in case anybody would find himself/herself not knowing what to do with that one line, I had to do it this way:

beingsaved = plt.figure()

# Some scatter plots
plt.scatter(X_1_x, X_1_y)
plt.scatter(X_2_x, X_2_y)

beingsaved.savefig('destination_path.eps', format='eps', dpi=1000)

Find index of last occurrence of a sub-string using T-SQL

@indexOf = <whatever characters you are searching for in your string>

@LastIndexOf = LEN([MyField]) - CHARINDEX(@indexOf, REVERSE([MyField]))

Haven't tested, it might be off by one because of zero index, but works in SUBSTRING function when chopping off from @indexOf characters to end of your string

SUBSTRING([MyField], 0, @LastIndexOf)

Slack URL to open a channel from browser

You can use

slack://

in order to open the Slack desktop application. For example, on mac, I've run:

open slack://

from the terminal and it opens the Mac desktop Slack application. Still, I didn't figure out the URL that should be used for opening a certain team, channel or message.

How to autowire RestTemplate using annotations

You can add the method below to your class for providing a default implementation of RestTemplate:

@Bean
public RestTemplate restTemplate() {
    return new RestTemplate();
}

Removing duplicate rows in Notepad++

In version 7.8, you can accomplish this without any plugins - Edit -> Line Operations -> Remove Consecutive Duplicate Lines. You will have to sort the file to place duplicate lines in consecutive order before this works, but it does work like a charm.

Sorting options are available under Edit -> Line Operations -> Sort By ...

How do you clear a slice in Go?

It all depends on what is your definition of 'clear'. One of the valid ones certainly is:

slice = slice[:0]

But there's a catch. If slice elements are of type T:

var slice []T

then enforcing len(slice) to be zero, by the above "trick", doesn't make any element of

slice[:cap(slice)]

eligible for garbage collection. This might be the optimal approach in some scenarios. But it might also be a cause of "memory leaks" - memory not used, but potentially reachable (after re-slicing of 'slice') and thus not garbage "collectable".

SQL Server Service not available in service list after installation of SQL Server Management Studio

You need to start the SQL Server manually. Press

windows + R

type

sqlservermanager12.msc

right click ->Start

Service configuration does not display SQL Server?

Skipping Iterations in Python

You are looking for continue.

AVD Manager - No system image installed for this target

Open your Android SDK Manager and ensure that you download/install a system image for the API level you are developing with.

How do I connect to a Websphere Datasource with a given JNDI name?

You need to define a resource reference in your application and then map that logical resource reference to the physical resource (data source) during deployment.

In your web.xml, add the following configuration (modifying the names and properties as appropriate):

<resource-ref>
    <description>Resource reference to my database</description>
    <res-ref-name>jdbc/MyDB</res-ref-name>
    <res-type>javax.sql.DataSource</res-type>
    <res-auth>Container</res-auth>
    <res-sharing-scope>Shareable</res-sharing-scope>
</resource-ref>

Then, during application deployment, WAS will prompt you to map this resource reference (jdbc/MyDB) to the data source you created in WAS.

In your code, you can obtain the DataSource similar to how you've shown it in your example; however, the JNDI name you'll use to look it up should actually be the resource reference's name you defined (res-ref-name), rather than the JNDI name of the physical data source. Also, you'll need to prefix the res-ref-name with the application naming context (java:comp/env/).

Context ctx = new InitialContext();
DataSource dataSource = (DataSource) ctx.lookup("java:comp/env/jdbc/MyDB");

how does Request.QueryString work?

The QueryString collection is used to retrieve the variable values in the HTTP query string.

The HTTP query string is specified by the values following the question mark (?), like this:

Link with a query string

The line above generates a variable named txt with the value "this is a query string test".

Query strings are also generated by form submission, or by a user typing a query into the address bar of the browser.

And see this sample : http://www.codeproject.com/Articles/5876/Passing-variables-between-pages-using-QueryString

refer this : http://www.dotnetperls.com/querystring

you can collect More details in google .

Windows batch: call more than one command in a FOR loop?

Using & is fine for short commands, but that single line can get very long very quick. When that happens, switch to multi-line syntax.

FOR /r %%X IN (*.txt) DO (
    ECHO %%X
    DEL %%X
)

Placement of ( and ) matters. The round brackets after DO must be placed on the same line, otherwise the batch file will be incorrect.

See if /?|find /V "" for details.

Including a css file in a blade template?

@include directive allows you to include a Blade view from within another view, like this :

@include('another.view')

Include CSS or JS from master layout

`asset()`

The asset function generates a URL for an asset using the current scheme of the request (HTTP or HTTPS):

<link href="{{ asset('css/styles.css') }}" rel="stylesheet">
<script type="text/javascript" src="{{ asset('js/scripts.js') }}"></script>

`mix()`

If you are using versioned Mix file, you can also use mix() function. It will returns the path to a versioned Mix file:

<link href="{{ mix('css/styles.css') }}" rel="stylesheet">
<script type="text/javascript" src="{{ mix('js/scripts.js') }}"></script>

Incude CSS or JS from sub-view, use `@push()`.

layout.blade.php

<html>
    <head>
        <!-- push target to head -->
        @stack('styles')
        @stack('scripts')
    </head>
    <body>

        <!-- or push target to footer -->
        @stack('scripts')
    </body>
</html

view.blade.php

@push('styles')
    <link href="{{ asset('css/styles.css') }}" rel="stylesheet">
@endpush

@push('scripts')
    <script type="text/javascript" src="{{ asset('js/scripts.js') }}"></script>
@endpush

How to set the JDK Netbeans runs on?

IN windows open cmd

go to directory where your netbeans downloaded

then run below command JDK path may be different from the path I mentioned

netbeans-8.2-windows.exe --javahome "C:\Program Files\Java\jdk-9.0.1"

if you face issue in existing installed in netbeans you can find details in here

Select Tag Helper in ASP.NET Core MVC

Using the Select Tag helpers to render a SELECT element

In your GET action, create an object of your view model, load the EmployeeList collection property and send that to the view.

public IActionResult Create()
{
    var vm = new MyViewModel();
    vm.EmployeesList = new List<Employee>
    {
        new Employee { Id = 1, FullName = "Shyju" },
        new Employee { Id = 2, FullName = "Bryan" }
    };
    return View(vm);
}

And in your create view, create a new SelectList object from the EmployeeList property and pass that as value for the asp-items property.

@model MyViewModel
<form asp-controller="Home" asp-action="Create">

    <select asp-for="EmployeeId" 
            asp-items="@(new SelectList(Model.EmployeesList,"Id","FullName"))">
        <option>Please select one</option>
    </select>

    <input type="submit"/>

</form>

And your HttpPost action method to accept the submitted form data.

[HttpPost]
public IActionResult Create(MyViewModel model)
{
   //  check model.EmployeeId 
   //  to do : Save and redirect
}

If your view model has a List<SelectListItem> as the property for your dropdown items.

public class MyViewModel
{
    public int EmployeeId { get; set; }
    public string Comments { get; set; }
    public List<SelectListItem> Employees { set; get; }
}

And in your get action,

public IActionResult Create()
{
    var vm = new MyViewModel();
    vm.Employees = new List<SelectListItem>
    {
        new SelectListItem {Text = "Shyju", Value = "1"},
        new SelectListItem {Text = "Sean", Value = "2"}
    };
    return View(vm);
}

And in the view, you can directly use the Employees property for the asp-items.

@model MyViewModel
<form asp-controller="Home" asp-action="Create">

    <label>Comments</label>
    <input type="text" asp-for="Comments"/>

    <label>Lucky Employee</label>
    <select asp-for="EmployeeId" asp-items="@Model.Employees" >
        <option>Please select one</option>
    </select>

    <input type="submit"/>

</form>

The class SelectListItem belongs to Microsoft.AspNet.Mvc.Rendering namespace.

Make sure you are using an explicit closing tag for the select element. If you use the self closing tag approach, the tag helper will render an empty SELECT element!

The below approach will not work

<select asp-for="EmployeeId" asp-items="@Model.Employees" />

But this will work.

<select asp-for="EmployeeId" asp-items="@Model.Employees"></select>

Getting data from your database table using entity framework

The above examples are using hard coded items for the options. So i thought i will add some sample code to get data using Entity framework as a lot of people use that.

Let's assume your DbContext object has a property called Employees, which is of type DbSet<Employee> where the Employee entity class has an Id and Name property like this

public class Employee
{
   public int Id { set; get; }
   public string Name { set; get; }
}

You can use a LINQ query to get the employees and use the Select method in your LINQ expression to create a list of SelectListItem objects for each employee.

public IActionResult Create()
{
    var vm = new MyViewModel();
    vm.Employees = context.Employees
                          .Select(a => new SelectListItem() {  
                              Value = a.Id.ToString(),
                              Text = a.Name
                          })
                          .ToList();
    return View(vm);
}

Assuming context is your db context object. The view code is same as above.

Using SelectList

Some people prefer to use SelectList class to hold the items needed to render the options.

public class MyViewModel
{
    public int EmployeeId { get; set; }
    public SelectList Employees { set; get; }
}

Now in your GET action, you can use the SelectList constructor to populate the Employees property of the view model. Make sure you are specifying the dataValueField and dataTextField parameters.

public IActionResult Create()
{
    var vm = new MyViewModel();
    vm.Employees = new SelectList(GetEmployees(),"Id","FirstName");
    return View(vm);
}
public IEnumerable<Employee> GetEmployees()
{
    // hard coded list for demo. 
    // You may replace with real data from database to create Employee objects
    return new List<Employee>
    {
        new Employee { Id = 1, FirstName = "Shyju" },
        new Employee { Id = 2, FirstName = "Bryan" }
    };
}

Here I am calling the GetEmployees method to get a list of Employee objects, each with an Id and FirstName property and I use those properties as DataValueField and DataTextField of the SelectList object we created. You can change the hardcoded list to a code which reads data from a database table.

The view code will be same.

<select asp-for="EmployeeId" asp-items="@Model.Employees" >
    <option>Please select one</option>
</select>

Render a SELECT element from a list of strings.

Sometimes you might want to render a select element from a list of strings. In that case, you can use the SelectList constructor which only takes IEnumerable<T>

var vm = new MyViewModel();
var items = new List<string> {"Monday", "Tuesday", "Wednesday"};
vm.Employees = new SelectList(items);
return View(vm);

The view code will be same.

Setting selected options

Some times,you might want to set one option as the default option in the SELECT element (For example, in an edit screen, you want to load the previously saved option value). To do that, you may simply set the EmployeeId property value to the value of the option you want to be selected.

public IActionResult Create()
{
    var vm = new MyViewModel();
    vm.Employees = new List<SelectListItem>
    {
        new SelectListItem {Text = "Shyju", Value = "11"},
        new SelectListItem {Text = "Tom", Value = "12"},
        new SelectListItem {Text = "Jerry", Value = "13"}
    };
    vm.EmployeeId = 12;  // Here you set the value
    return View(vm);
}

This will select the option Tom in the select element when the page is rendered.

Multi select dropdown

If you want to render a multi select dropdown, you can simply change your view model property which you use for asp-for attribute in your view to an array type.

public class MyViewModel
{
    public int[] EmployeeIds { get; set; }
    public List<SelectListItem> Employees { set; get; }
}

This will render the HTML markup for the select element with the multiple attribute which will allow the user to select multiple options.

@model MyViewModel
<select id="EmployeeIds" multiple="multiple" name="EmployeeIds">
    <option>Please select one</option>
    <option value="1">Shyju</option>
    <option value="2">Sean</option>
</select>

Setting selected options in multi select

Similar to single select, set the EmployeeIds property value to the an array of values you want.

public IActionResult Create()
{
    var vm = new MyViewModel();
    vm.Employees = new List<SelectListItem>
    {
        new SelectListItem {Text = "Shyju", Value = "11"},
        new SelectListItem {Text = "Tom", Value = "12"},
        new SelectListItem {Text = "Jerry", Value = "13"}
    };
    vm.EmployeeIds= new int[] { 12,13} ;  
    return View(vm);
}

This will select the option Tom and Jerry in the multi select element when the page is rendered.

Using ViewBag to transfer the list of items

If you do not prefer to keep a collection type property to pass the list of options to the view, you can use the dynamic ViewBag to do so.(This is not my personally recommended approach as viewbag is dynamic and your code is prone to uncatched typo errors)

public IActionResult Create()
{       
    ViewBag.Employees = new List<SelectListItem>
    {
        new SelectListItem {Text = "Shyju", Value = "1"},
        new SelectListItem {Text = "Sean", Value = "2"}
    };
    return View(new MyViewModel());
}

and in the view

<select asp-for="EmployeeId" asp-items="@ViewBag.Employees">
    <option>Please select one</option>
</select>

Using ViewBag to transfer the list of items and setting selected option

It is same as above. All you have to do is, set the property (for which you are binding the dropdown for) value to the value of the option you want to be selected.

public IActionResult Create()
{       
    ViewBag.Employees = new List<SelectListItem>
    {
        new SelectListItem {Text = "Shyju", Value = "1"},
        new SelectListItem {Text = "Bryan", Value = "2"},
        new SelectListItem {Text = "Sean", Value = "3"}
    };

    vm.EmployeeId = 2;  // This will set Bryan as selected

    return View(new MyViewModel());
}

and in the view

<select asp-for="EmployeeId" asp-items="@ViewBag.Employees">
    <option>Please select one</option>
</select>

Grouping items

The select tag helper method supports grouping options in a dropdown. All you have to do is, specify the Group property value of each SelectListItem in your action method.

public IActionResult Create()
{
    var vm = new MyViewModel();

    var group1 = new SelectListGroup { Name = "Dev Team" };
    var group2 = new SelectListGroup { Name = "QA Team" };

    var employeeList = new List<SelectListItem>()
    {
        new SelectListItem() { Value = "1", Text = "Shyju", Group = group1 },
        new SelectListItem() { Value = "2", Text = "Bryan", Group = group1 },
        new SelectListItem() { Value = "3", Text = "Kevin", Group = group2 },
        new SelectListItem() { Value = "4", Text = "Alex", Group = group2 }
    };
    vm.Employees = employeeList;
    return View(vm);
}

There is no change in the view code. the select tag helper will now render the options inside 2 optgroup items.

How can I get a list of users from active directory?

Include the System.DirectoryServices.dll, then use the code below:

DirectoryEntry directoryEntry = new DirectoryEntry("WinNT://" + Environment.MachineName);
string userNames="Users: ";

foreach (DirectoryEntry child in directoryEntry.Children)
{
    if (child.SchemaClassName == "User")
    {
        userNames += child.Name + Environment.NewLine   ;         
    }

}
MessageBox.Show(userNames);

Programs & Examples On #Itunes sdk

Prevent a webpage from navigating away using JavaScript

Trim whitespace from a String

What is Java EE?

Using HTML5/JavaScript to generate and save a file

JSON forEach get Key and Value

New Array from Index Range Swift

Powershell folder size of folders without listing Subdirectories

Writing handler for UIAlertAction

Save a subplot in matplotlib

Python 2.6: Class inside a Class?

PHP, display image with Header()

read complete file without using loop in java

How to escape % in String.Format?

set environment variable in python script

Open Url in default web browser

Access restriction: Is not accessible due to restriction on required library ..\jre\lib\rt.jar

MySQL & Java - Get id of the last inserted value (JDBC)

Explicitly set column value to null SQL Developer

SQLException: No suitable driver found for jdbc:derby://localhost:1527

How to catch segmentation fault in Linux?

Which language uses .pde extension?

Database Diagram Support Objects cannot be Installed ... no valid owner

How can I know which radio button is selected via jQuery?

How can I print out just the index of a pandas dataframe?

How to increase the timeout period of web service in asp.net?

How to print a specific row of a pandas DataFrame?

how to remove pagination in datatable

Effective way to find any file's Encoding

R Error in x$ed : $ operator is invalid for atomic vectors

How do I create a URL shortener?

How do I get this javascript to run every second?

Which is better, return value or out parameter?

Web link to specific whatsapp contact

How to execute .sql script file using JDBC

Rails: update_attribute vs update_attributes

How does PHP 'foreach' actually work?

SQL Server - Adding a string to a text column (concat equivalent)

Capitalize or change case of an NSString in Objective-C

How to present UIAlertController when not in a view controller?

Calling a javascript function in another js file

What is difference between cacerts and keystore?

Global Events in Angular

Notepad++ add to every line

Is there a better way to compare dictionary values

Add comma to numbers every three digits

tmux set -g mouse-mode on doesn't work

Scrollview vertical and horizontal in android

'sudo gem install' or 'gem install' and gem locations

How to get the cell value by column name not by index in GridView in asp.net

Jquery insert new row into table at a certain index

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