How to count the number of set bits in a 32-bit integer?

I am giving two algorithms to answer the question,

  package countSetBitsInAnInteger;

    import java.util.Scanner;

    public class UsingLoop {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        try{
        System.out.println("Enter a integer number to check for set bits in it");
        int n = in.nextInt();
        System.out.println("Using while loop, we get the number of set bits as: "+usingLoop(n));
        System.out.println("Using Brain Kernighan's Algorithm, we get the number of set bits as: "+usingBrainKernighan(n));
        System.out.println("Using ");
        }
        finally{
        in.close();
        }
    }
    private static int usingBrainKernighan(int n) {
        int count = 0;
        while(n>0){
            n&=(n-1);
            count++;
        }
        return count;
    }/*
    Analysis:
        Time complexity = O(lgn)
        Space complexity = O(1)
    */
    private static int usingLoop(int n) {
        int count = 0;
        for(int i=0;i<32;i++){
            if((n&(1<<i))!=0)
                count++;
        }
        return count;
    }
    /*
    Analysis:
        Time Complexity = O(32) // Maybe the complexity is O(lgn)
        Space Complexity = O(1)
    */
    }

Default session timeout for Apache Tomcat applications

Open $CATALINA_BASE/conf/web.xml and find this

<!-- ==================== Default Session Configuration ================= -->
<!-- You can set the default session timeout (in minutes) for all newly   -->
<!-- created sessions by modifying the value below.                       -->

<session-config>
  <session-timeout>30</session-timeout>
</session-config>

all webapps implicitly inherit from this default web descriptor. You can override session-config as well as other settings defined there in your web.xml.

This is actually from my Tomcat 7 (Windows) but I think 5.5 conf is not very different

Alternate table row color using CSS?

Just add the following to your html code (withing the <head>) and you are done.

HTML:

<style>
      tr:nth-of-type(odd) {
      background-color:#ccc;
    }
</style>

Easier and faster than jQuery examples.

Changing default startup directory for command prompt in Windows 7

I think the easiest way is to make a cmd shortcut, then change the shortcut's "Start in" directory to the one you want to start with.

described_image

Leading zeros for Int in Swift

Assuming you want a field length of 2 with leading zeros you'd do this:

import Foundation

for myInt in 1 ... 3 {
    print(String(format: "%02d", myInt))
}

output:

01
02
03

This requires import Foundation so technically it is not a part of the Swift language but a capability provided by the Foundation framework. Note that both import UIKit and import Cocoa include Foundation so it isn't necessary to import it again if you've already imported Cocoa or UIKit.

The format string can specify the format of multiple items. For instance, if you are trying to format 3 hours, 15 minutes and 7 seconds into 03:15:07 you could do it like this:

let hours = 3
let minutes = 15
let seconds = 7
print(String(format: "%02d:%02d:%02d", hours, minutes, seconds))

output:

03:15:07

How can I open a website in my web browser using Python?

From the doc.

The webbrowser module provides a high-level interface to allow displaying Web-based documents to users. Under most circumstances, simply calling the open() function from this module will do the right thing.

You have to import the module and use open() function. This will open https://nabinkhadka.com.np in the browser.

To open in new tab:

import webbrowser
webbrowser.open('https://nabinkhadka.com.np', new = 2)

Also from the doc.

If new is 0, the url is opened in the same browser window if possible. If new is 1, a new browser window is opened if possible. If new is 2, a new browser page (“tab”) is opened if possible

So according to the value of new, you can either open page in same browser window or in new tab etc.

Also you can specify as which browser (chrome, firebox, etc.) to open. Use get() function for this.

Titlecase all entries into a form_for text field

You don't want to take care of normalizing your data in a view - what if the user changes the data that gets submitted? Instead you could take care of it in the model using the before_save (or the before_validation) callback. Here's an example of the relevant code for a model like yours:

class Place < ActiveRecord::Base   before_save do |place|     place.city = place.city.downcase.titleize     place.country = place.country.downcase.titleize   end end

You can also check out the Ruby on Rails guide for more info.

To answer you question more directly, something like this would work:

<%= f.text_field :city, :value => (f.object.city ? f.object.city.titlecase : '') %>

This just means if f.object.city exists, display the titlecase version of it, and if it doesn't display a blank string.

getting the last item in a javascript object

Yes, there is a way using Object.keys(obj). It is explained in this page:

var fruitObject = { 'a' : 'apple', 'b' : 'banana', 'c' : 'carrot' };
Object.keys(fruitObject); // this returns all properties in an array ["a", "b", "c"]

If you want to get the value of the last object, you could do this:

fruitObject[Object.keys(fruitObject)[Object.keys(fruitObject).length - 1]] // "carrot"

Getting time elapsed in Objective-C

Use the timeIntervalSinceDate method

NSTimeInterval secondsElapsed = [secondDate timeIntervalSinceDate:firstDate];

NSTimeInterval is just a double, define in NSDate like this:

typedef double NSTimeInterval;

Unable to launch the IIS Express Web server, Failed to register URL, Access is denied

My issue turned out to be that I had SSL Enabled on the project settings. I simply disabled this because I did not require SSL for running the project locally.

In Visual Studio 2015:

Select the project in the Solution Explorer.
In the Properties window set SSL Enabled to False.
I was able to run the project.

In my situation I was getting an error about port 443 in use because this was the port set on the SSL URL for the project.

What is the Gradle artifact dependency graph command?

If you want recursive to include subprojects, you can always write it yourself:

Paste into the top-level build.gradle:

task allDeps << {
    println "All Dependencies:"
    allprojects.each { p ->
        println()
        println " $p.name ".center( 60, '*' )
        println()
        p.configurations.all.findAll { !it.allDependencies.empty }.each { c ->
            println " ${c.name} ".center( 60, '-' )
            c.allDependencies.each { dep ->
                println "$dep.group:$dep.name:$dep.version"
            }
            println "-" * 60
        }
    }
}

Run with:

gradle allDeps

ssh: check if a tunnel is alive

This is my test. Hope it is useful.

# $COMMAND is the command used to create the reverse ssh tunnel
COMMAND="ssh -p $SSH_PORT -q -N -R $REMOTE_HOST:$REMOTE_HTTP_PORT:localhost:80 $USER_NAME@$REMOTE_HOST"

# Is the tunnel up? Perform two tests:

# 1. Check for relevant process ($COMMAND)
pgrep -f -x "$COMMAND" > /dev/null 2>&1 || $COMMAND

# 2. Test tunnel by looking at "netstat" output on $REMOTE_HOST
ssh -p $SSH_PORT $USER_NAME@$REMOTE_HOST netstat -an | egrep "tcp.*:$REMOTE_HTTP_PORT.*LISTEN" \
   > /dev/null 2>&1
if [ $? -ne 0 ] ; then
   pkill -f -x "$COMMAND"
   $COMMAND
fi

Simple dictionary in C++

Until I was really concerned about performance, I would use a function, that takes a base and returns its match:

char base_pair(char base)
{
    switch(base) {
        case 'T': return 'A';
        ... etc
        default: // handle error
    }
}

If I was concerned about performance, I would define a base as one fourth of a byte. 0 would represent A, 1 would represent G, 2 would represent C, and 3 would represent T. Then I would pack 4 bases into a byte, and to get their pairs, I would simply take the complement.

installing apache: no VCRUNTIME140.dll

Check if your OS is Windows 7 Service Pack 1.. use "winver" to verify.

How to sort 2 dimensional array by column value?

If you're anything like me, you won't want to go through changing each index every time you want to change the column you're sorting by.

function sortByColumn(a, colIndex){

    a.sort(sortFunction);

    function sortFunction(a, b) {
        if (a[colIndex] === b[colIndex]) {
            return 0;
        }
        else {
            return (a[colIndex] < b[colIndex]) ? -1 : 1;
        }
    }

    return a;
}

var sorted_a = sortByColumn(a, 2);

How to easily initialize a list of Tuples?

Yes! This is possible.

The { } syntax of the collection initializer works on any IEnumerable type which has an Add method with the correct amount of arguments. Without bothering how that works under the covers, that means you can simply extend from List<T>, add a custom Add method to initialize your T, and you are done!

public class TupleList<T1, T2> : List<Tuple<T1, T2>>
{
    public void Add( T1 item, T2 item2 )
    {
        Add( new Tuple<T1, T2>( item, item2 ) );
    }
}

This allows you to do the following:

var groceryList = new TupleList<int, string>
{
    { 1, "kiwi" },
    { 5, "apples" },
    { 3, "potatoes" },
    { 1, "tomato" }
};

How can I take an UIImage and give it a black border?

For those looking for a plug-and-play solution on UIImage, I wrote CodyMace's answer as an extension.

Usage: let outlined = UIImage(named: "something")?.outline()

extension UIImage {

    func outline() -> UIImage? {

        let size = CGSize(width: self.size.width, height: self.size.height)
        UIGraphicsBeginImageContext(size)
        let rect = CGRect(x: 0, y: 0, width: size.width, height: size.height)
        self.draw(in: rect, blendMode: .normal, alpha: 1.0)
        let context = UIGraphicsGetCurrentContext()
        context?.setStrokeColor(red: 0, green: 0, blue: 0, alpha: 1)
        context?.stroke(rect)
        let newImage = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()

        return newImage

    }

}

Getting error: ISO C++ forbids declaration of with no type

Your declaration is int ttTreeInsert(int value);

However, your definition/implementation is

ttTree::ttTreeInsert(int value)
{
}

Notice that the return type int is missing in the implementation. Instead it should be

int ttTree::ttTreeInsert(int value)
{
    return 1; // or some valid int
}

Practical uses of different data structures

As per my understanding data structure is any data residing in memory of any electronic system that can be efficiently managed. Many times it is a game of memory or faster accessibility of data. In terms of memory again, there are tradeoffs done with the management of data based on cost to the company of that end product. Efficiently managed tells us how best the data can be accessed based on the primary requirement of the end product. This is a very high level explanation but data structures is a vast subjects. Most of the interviewers dive into data structures that they can afford to discuss in the interviews depending on the time they have, which are linked lists and related subjects.

Now, these data types can be divided into primitive, abstract, composite, based on the way they are logically constructed and accessed.

primitive data structures are basic building blocks for all data structures, they have a continuous memory for them: boolean, char, int, float, double, string.
composite data structures are data structures that are composed of more than one primitive data types.class, structure, union, array/record.
abstract datatypes are composite datatypes that have way to access them efficiently which is called as an algorithm. Depending on the way the data is accessed data structures are divided into linear and non linear datatypes. Linked lists, stacks, queues, etc are linear data types. heaps, binary trees and hash tables etc are non linear data types.

I hope this helps you dive in.

Getting Index of an item in an arraylist;

To find the item that has a name, should I just use a for loop, and when the item is found, return the element position in the ArrayList?

Yes to the loop (either using indexes or an Iterator). On the return value, either return its index, or the item iteself, depending on your needs. ArrayList doesn't have an indexOf(Object target, Comparator compare)` or similar. Now that Java is getting lambda expressions (in Java 8, ~March 2014), I expect we'll see APIs get methods that accept lambdas for things like this.

How can I convert a timestamp from yyyy-MM-ddThh:mm:ss:SSSZ format to MM/dd/yyyy hh:mm:ss.SSS format? From ISO8601 to UTC

Yes. you can use SimpleDateFormat like this.

SimpleDateFormat formatter, FORMATTER;
formatter = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'");
String oldDate = "2011-03-10T11:54:30.207Z";
Date date = formatter.parse(oldDate.substring(0, 24));
FORMATTER = new SimpleDateFormat("dd-MMM-yyyy HH:mm:ss.SSS");
System.out.println("OldDate-->"+oldDate);
System.out.println("NewDate-->"+FORMATTER.format(date));

Output OldDate-->2011-03-10T11:54:30.207Z NewDate-->10-Mar-2011 11:54:30.207

Prevent PDF file from downloading and printing

Okay, I take back what I commented earlier. Just talked to one of the senior guys in my shop and he said it is possible to lock it down hard. What you can do is convert the pdf to an image/flash/whatever and wrap it in an iFrame. Then, you create another image with 100% transparency and lay it over top the iFrame (not in it) and set it to have a higher Z-value than the iFrame.

What this will do is that if they right click on the 'image' to save it, they will be saving the transparent image instead. And since the image 'overrides' the iFrame, any attempt to use print screen should be shielded by the image, and they should only be able to snapshot the image that doesn't actually exist.

That leaves only one or two ways to get at the file...which requires digging straight into the source code to find the image file inside the iFrame. Still not totally secure, but protected from your average user.

How to increase space between dotted border dots

This trick works for both horizontal and vertical borders:

/*Horizontal*/
background-image: linear-gradient(to right, black 33%, rgba(255,255,255,0) 0%);
background-position: bottom;
background-size: 3px 1px;
background-repeat: repeat-x;

/*Vertical*/
background-image: linear-gradient(black 33%, rgba(255,255,255,0) 0%);
background-position: right;
background-size: 1px 3px;
background-repeat: repeat-y;

You can adjust the size with background-size and the proportion with the linear-gradient percentages. In this example I have a dotted line of 1px dots and 2px spacing. This way you can have multiple dotted borders too using multiple backgrounds.

Try it in this JSFiddle or take a look at the code snippet example:

_x000D_

div {_x000D_
  padding: 10px 50px;_x000D_
}_x000D_
.dotted {_x000D_
  border-top: 1px #333 dotted;_x000D_
}_x000D_
.dotted-gradient {_x000D_
  background-image: linear-gradient(to right, #333 40%, rgba(255, 255, 255, 0) 20%);_x000D_
  background-position: top;_x000D_
  background-size: 3px 1px;_x000D_
  background-repeat: repeat-x;_x000D_
}_x000D_
.dotted-spaced {_x000D_
  background-image: linear-gradient(to right, #333 10%, rgba(255, 255, 255, 0) 0%);_x000D_
  background-position: top;_x000D_
  background-size: 10px 1px;_x000D_
  background-repeat: repeat-x;_x000D_
}_x000D_
.left {_x000D_
  float: left;_x000D_
  padding: 40px 10px;_x000D_
  background-color: #F0F0DA;_x000D_
}_x000D_
.left.dotted {_x000D_
  border-left: 1px #333 dotted;_x000D_
  border-top: none;_x000D_
}_x000D_
.left.dotted-gradient {_x000D_
  background-image: linear-gradient(to bottom, #333 40%, rgba(255, 255, 255, 0) 20%);_x000D_
  background-position: left;_x000D_
  background-size: 1px 3px;_x000D_
  background-repeat: repeat-y;_x000D_
}_x000D_
.left.dotted-spaced {_x000D_
  background-image: linear-gradient(to bottom, #333 10%, rgba(255, 255, 255, 0) 0%);_x000D_
  background-position: left;_x000D_
  background-size: 1px 10px;_x000D_
  background-repeat: repeat-y;_x000D_
}

_x000D_

<div>no_x000D_
  <br>border</div>_x000D_
<div class='dotted'>dotted_x000D_
  <br>border</div>_x000D_
<div class='dotted-gradient'>dotted_x000D_
  <br>with gradient</div>_x000D_
<div class='dotted-spaced'>dotted_x000D_
  <br>spaced</div>_x000D_
_x000D_
<div class='left'>no_x000D_
  <br>border</div>_x000D_
<div class='dotted left'>dotted_x000D_
  <br>border</div>_x000D_
<div class='dotted-gradient left'>dotted_x000D_
  <br>with gradient</div>_x000D_
<div class='dotted-spaced left'>dotted_x000D_
  <br>spaced</div>

_x000D_

Read MS Exchange email in C#

Um,

I might be a bit too late here but isn't this kinda the point to EWS ?

https://msdn.microsoft.com/en-us/library/dd633710(EXCHG.80).aspx

Takes about 6 lines of code to get the mail from a mailbox:

ExchangeService service = new ExchangeService(ExchangeVersion.Exchange2007_SP1);

//service.Credentials = new NetworkCredential( "{Active Directory ID}", "{Password}", "{Domain Name}" );

service.AutodiscoverUrl( "[email protected]" );

FindItemsResults<Item> findResults = service.FindItems(
   WellKnownFolderName.Inbox,
   new ItemView( 10 ) 
);

foreach ( Item item in findResults.Items )
{
   Console.WriteLine( item.Subject );
}

linux/videodev.h : no such file or directory - OpenCV on ubuntu 11.04

sudo apt-get install libv4l-dev

Editing for RH based systems :

On a Fedora 16 to install pygame 1.9.1 (in a virtualenv):

sudo yum install libv4l-devel
sudo ln -s /usr/include/libv4l1-videodev.h   /usr/include/linux/videodev.h

Matplotlib subplots_adjust hspace so titles and xlabels don't overlap?

You can use plt.subplots_adjust to change the spacing between the subplots Link

subplots_adjust(left=None, bottom=None, right=None, top=None, wspace=None, hspace=None)

left  = 0.125  # the left side of the subplots of the figure
right = 0.9    # the right side of the subplots of the figure
bottom = 0.1   # the bottom of the subplots of the figure
top = 0.9      # the top of the subplots of the figure
wspace = 0.2   # the amount of width reserved for blank space between subplots
hspace = 0.2   # the amount of height reserved for white space between subplots

How do I set up the database.yml file in Rails?

The database.yml is a file that is created with new rails applications in /config and defines the database configurations that your application will use in different environments. Read this for details.

Example database.yml:

development:
  adapter: sqlite3
  database: db/development.sqlite3
  pool: 5
  timeout: 5000

test:
  adapter: sqlite3
  database: db/test.sqlite3
  pool: 5
  timeout: 5000

production:
  adapter: mysql
  encoding: utf8
  database: your_db
  username: root
  password: your_pass
  socket: /tmp/mysql.sock
  host: your_db_ip     #defaults to 127.0.0.1
  port: 3306

Adding Image to xCode by dragging it from File

For xCode 10, first you need to add the image in your assetsCatalogue and then type this:

let imageView = UIImageView(image: #imageLiteral(resourceName: "type the name of your image here..."))

For beginners, let imageView is the name of the UIImageView object we are about to create.

An example for embedding an image into a viewControler file would look like this:

import UIKit

class TutorialViewCotroller: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        let imageView = UIImageView(image: #imageLiteral(resourceName: "intoImage"))
        view.addSubview(imageView)
    }
}

Please notice that I did not use any extension for the image file name, as in my case it is a group of images.

Adding content to a linear layout dynamically?

In your onCreate(), write the following

LinearLayout myRoot = (LinearLayout) findViewById(R.id.my_root);
LinearLayout a = new LinearLayout(this);
a.setOrientation(LinearLayout.HORIZONTAL);
a.addView(view1);
a.addView(view2);
a.addView(view3);
myRoot.addView(a);

view1, view2 and view3 are your TextViews. They're easily created programmatically.

Bootstrap dropdown not working

Copy/paste the CSS link followed by the JS link from the bootstrap site here. Then the dropdown should work.

My page looks like:

<html>
  <head>
    <meta charset="utf-8">
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
    <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>
    <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>

    <title>Website Title</title>
  </head>
  <body>
    <div id="content" />
    <nav class="navbar navbar-expand-lg navbar-light bg-light">
      <a class="navbar-brand" href="#">Navbar</a>
      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
      </button>
      <div class="collapse navbar-collapse" id="navbarSupportedContent">
        <ul class="navbar-nav mr-auto">
          <li class="nav-item active">
            <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="#">Link</a>
          </li>
          <li class="nav-item dropdown">
            <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
              Dropdown
            </a>
            <div class="dropdown-menu" aria-labelledby="navbarDropdown">
              <a class="dropdown-item" href="#">Action</a>
              <a class="dropdown-item" href="#">Another action</a>
              <div class="dropdown-divider"></div>
              <a class="dropdown-item" href="#">Something else here</a>
            </div>
          </li>
          <li class="nav-item">
            <a class="nav-link disabled" href="#">Disabled</a>
          </li>
        </ul>
        <form class="form-inline my-2 my-lg-0">
          <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
          <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
        </form>
      </div>
    </nav>
  </body>
</html>

(Navbar from here)

Initialising mock objects - MockIto

The other answers are great and contain more detail if you want/need them.
In addition to those, I would like to add a TL;DR:

Prefer to use
- @RunWith(MockitoJUnitRunner.class)
If you cannot (because you already use a different runner), prefer to use
- @Rule public MockitoRule rule = MockitoJUnit.rule();
Similar to (2), but you should not use this anymore:
- @Before public void initMocks() { MockitoAnnotations.initMocks(this); }
If you want to use a mock in just one of the tests and don't want to expose it to other tests in the same test class, use
- X x = mock(X.class)

(1) and (2) and (3) are mutually exclusive.
(4) can be used in combination with the others.

Referencing a string in a string array resource with xml

The better option would be to just use the resource returned array as an array, meaning :

getResources().getStringArray(R.array.your_array)[position]

This is a shortcut approach of above mentioned approaches but does the work in the fashion you want. Otherwise android doesnt provides direct XML indexing for xml based arrays.

How to define object in array in Mongoose schema correctly with 2d geo index

I had a similar issue with mongoose :

fields: 
    [ '[object Object]',
     '[object Object]',
     '[object Object]',
     '[object Object]' ] }

In fact, I was using "type" as a property name in my schema :

fields: [
    {
      name: String,
      type: {
        type: String
      },
      registrationEnabled: Boolean,
      checkinEnabled: Boolean
    }
  ]

To avoid that behavior, you have to change the parameter to :

fields: [
    {
      name: String,
      type: {
        type: { type: String }
      },
      registrationEnabled: Boolean,
      checkinEnabled: Boolean
    }
  ]

How to check task status in Celery?

Old question but I recently ran into this problem.

If you're trying to get the task_id you can do it like this:

import celery
from celery_app import add
from celery import uuid

task_id = uuid()
result = add.apply_async((2, 2), task_id=task_id)

Now you know exactly what the task_id is and can now use it to get the AsyncResult:

# grab the AsyncResult 
result = celery.result.AsyncResult(task_id)

# print the task id
print result.task_id
09dad9cf-c9fa-4aee-933f-ff54dae39bdf

# print the AsyncResult's status
print result.status
SUCCESS

# print the result returned 
print result.result
4

Pass request headers in a jQuery AJAX GET call

As of jQuery 1.5, there is a headers hash you can pass in as follows:

$.ajax({
    url: "/test",
    headers: {"X-Test-Header": "test-value"}
});

From http://api.jquery.com/jQuery.ajax:

headers (added 1.5): A map of additional header key/value pairs to send along with the request. This setting is set before the beforeSend function is called; therefore, any values in the headers setting can be overwritten from within the beforeSend function.

How can I show line numbers in Eclipse?

this will be the appropriate solution for asked question:

String lineNumbers = AbstractDecoratedTextEditorPreferenceConstants.EDITOR_LINE_NUMBER_RULER; EditorsUI.getPreferenceStore().setValue(lineNumbers, true);

Convert a number range to another range, maintaining ratio

In the listing provided by PenguinTD, I do not understand why the ranges are reversed, it works without having to reverse the ranges. Linear range conversion is based upon the linear equation Y=Xm+n, where m and n are derived from the given ranges. Rather than refer to the ranges as min and max, it would be better to refer to them as 1 and 2. So the formula would be:

Y = (((X - x1) * (y2 - y1)) / (x2 - x1)) + y1

Where Y=y1 when X=x1, and Y=y2 when X=x2. x1, x2, y1 & y2 can be given any positive or negative value. Defining the expression in a macro makes it more useful,it can then be used with any argument names.

#define RangeConv(X, x1, x2, y1, y2) (((float)((X - x1) * (y2 - y1)) / (x2 - x1)) + y1)

The float cast would ensure floating point division in the case where all the arguments are integer values. Depending on the application it may not be necessary to check the ranges x1=x2 and y1==y2.

How to get all elements by class name?

highlight the navigation menu for the current page

JavaScript:

<script type="text/javascript">
    $(function() { 
        var url = window.location;
        $('ul.nav a').filter(function() {
            return this.href == url;
        }).parent().parent().parent().addClass('active');
    });   
</script>

CSS:

.active{
    color: #fff;
    background-color: #080808;
}

HTML:

<ul class="nav navbar-nav">
                        <li class="dropdown">
                            <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="true"><i class="glyphicon glyphicon-user icon-white"></i> MY ACCOUNT <span class="caret"></span></a>
                            <ul class="dropdown-menu" role="menu">
                                <li>
                                    <?php echo anchor('myaccount', 'HOME', 'title="HOME"'); ?>
                                </li>
                                <li>
                                    <?php echo anchor('myaccount/credithistory', 'CREDIT HISTORY', 'title="CREDIT HISTORY"'); ?>
                                </li>
                          </ul>
                     </li>
</ul>

How to simulate a button click using code?

you can do it this way

private Button btn;
btn = (Button)findViewById(R.id.button2);
btn.performClick();

Oracle Insert via Select from multiple tables where one table may not have a row

It was not clear to me in the question if ts.tax_status_code is a primary or alternate key or not. Same thing with recipient_code. This would be useful to know.

You can deal with the possibility of your bind variable being null using an OR as follows. You would bind the same thing to the first two bind variables.

If you are concerned about performance, you would be better to check if the values you intend to bind are null or not and then issue different SQL statement to avoid the OR.

insert into account_type_standard 
(account_type_Standard_id, tax_status_id, recipient_id)
(
select 
   account_type_standard_seq.nextval,
   ts.tax_status_id, 
   r.recipient_id
from tax_status ts, recipient r
where (ts.tax_status_code = ? OR (ts.tax_status_code IS NULL and ? IS NULL))
and (r.recipient_code = ? OR (r.recipient_code IS NULL and ? IS NULL))

Difference between CLOB and BLOB from DB2 and Oracle Perspective?

BLOB primarily intended to hold non-traditional data, such as images,videos,voice or mixed media. CLOB intended to retain character-based data.

Simulating Key Press C#

The easiest way to send (simulate) KeyStrokes to any window is to use the SendKeys.Send method of .NET Framework.

Checkout this very intuitive MSDN article http://msdn.microsoft.com/en-us/library/system.windows.forms.sendkeys.aspx

Particularly for your case, if your browser window is in focus, sending F5 would just involve the following line of code:

SendKeys.Send("{F5}");

Google Maps API V3 : How show the direction from a point A to point B (Blue line)?

I'm using a popup to show the map in a new window. I'm using the following url

https://www.google.com/maps?z=15&daddr=LATITUDE,LONGITUDE

HTML snippet

<a target='_blank' href='https://www.google.com/maps?z=15&daddr=${location.latitude},${location.longitude}'>Calculate route</a>

Display filename before matching line

No trick necessary.

grep --with-filename 'pattern' file

With line numbers:

grep -n --with-filename 'pattern' file

VBA shorthand for x=x+1?

If you want to call the incremented number directly in a function, this solution works bettter:

Function inc(ByRef data As Integer)
    data = data + 1
    inc = data
End Function

for example:

Wb.Worksheets(mySheet).Cells(myRow, inc(myCol))

If the function inc() returns no value, the above line will generate an error.

Redirecting from HTTP to HTTPS with PHP

Try something like this (should work for Apache and IIS):

if (empty($_SERVER['HTTPS']) || $_SERVER['HTTPS'] === "off") {
    $location = 'https://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
    header('HTTP/1.1 301 Moved Permanently');
    header('Location: ' . $location);
    exit;
}

Error : ORA-01704: string literal too long

To solve this issue on my side, I had to use a combo of what was already proposed there

DECLARE
  chunk1 CLOB; chunk2 CLOB; chunk3 CLOB;
BEGIN
  chunk1 := 'very long literal part 1';
  chunk2 := 'very long literal part 2';
  chunk3 := 'very long literal part 3';

  INSERT INTO table (MY_CLOB)
  SELECT ( chunk1 || chunk2 || chunk3 ) FROM dual;
END;

Hope this helps.

How to set variables in HIVE scripts

Most of the answers here have suggested to either use hiveconf or hivevar namespace to store the variable. And all those answers are right. However, there is one more namespace.

There are total three namespaces available for holding variables.

hiveconf - hive started with this, all the hive configuration is stored as part of this conf. Initially, variable substitution was not part of hive and when it got introduced, all the user-defined variables were stored as part of this as well. Which is definitely not a good idea. So two more namespaces were created.
hivevar: To store user variables
system: To store system variables.

And so if you are storing a variable as part of a query (i.e. date or product_number) you should use hivevar namespace and not hiveconf namespace.

And this is how it works.

hiveconf is still the default namespace, so if you don't provide any namespace it will store your variable in hiveconf namespace.

However, when it comes to referring a variable, it's not true. By default it refers to hivevar namespace. Confusing, right? It can become clearer with the following example.

If you do not provide namespace as mentioned below, variable var will be stored in hiveconf namespace.

set var="default_namespace";

So, to access this you need to specify hiveconf namespace

select ${hiveconf:var};

And if you do not provide namespace it will give you an error as mentioned below, reason being that by default if you try to access a variable it checks in hivevar namespace only. And in hivevar there is no variable named var

select ${var};

We have explicitly provided hivevar namespace

set hivevar:var="hivevar_namespace";

as we are providing the namespace this will work.

select ${hivevar:var};

And as default, workspace used during referring a variable is hivevar, the following will work too.

select ${var};

Can I use a case/switch statement with two variables?

Yeah, But not in a normal way. You will have to use switch as closure.

ex:-

function test(input1, input2) {
     switch (true) {
        case input1 > input2:
                    console.log(input1 + " is larger than " + input2);
                    break;
        case input1 < input2:
                    console.log(input2 + " is larger than " + input1);
        default:
                    console.log(input1 + " is equal to " + input2);
      }
   }

Should I return EXIT_SUCCESS or 0 from main()?

0 is, by definition, a magic number. EXIT_SUCCESS is almost universally equal to 0, happily enough. So why not just return/exit 0?

exit(EXIT_SUCCESS); is abundantly clear in meaning.

exit(0); on the other hand, is counterintuitive in some ways. Someone not familiar with shell behavior might assume that 0 == false == bad, just like every other usage of 0 in C. But no - in this one special case, 0 == success == good. For most experienced devs, not going to be a problem. But why trip up the new guy for absolutely no reason?

tl;dr - if there's a defined constant for your magic number, there's almost never a reason not to used the constant in the first place. It's more searchable, often clearer, etc. and it doesn't cost you anything.

Stacked bar chart

You need to transform your data to long format and shouldn't use $ inside aes:

DF <- read.table(text="Rank F1     F2     F3
1    500    250    50
2    400    100    30
3    300    155    100
4    200    90     10", header=TRUE)

library(reshape2)
DF1 <- melt(DF, id.var="Rank")

library(ggplot2)
ggplot(DF1, aes(x = Rank, y = value, fill = variable)) + 
  geom_bar(stat = "identity")

enter image description here

Extract time from date String

A very simple way is to use Formatter (see date time conversions) or more directly String.format as in

String.format("%tR", new Date())

How to convert a file to utf-8 in Python?

You can use the codecs module, like this:

import codecs
BLOCKSIZE = 1048576 # or some other, desired size in bytes
with codecs.open(sourceFileName, "r", "your-source-encoding") as sourceFile:
    with codecs.open(targetFileName, "w", "utf-8") as targetFile:
        while True:
            contents = sourceFile.read(BLOCKSIZE)
            if not contents:
                break
            targetFile.write(contents)

EDIT: added BLOCKSIZE parameter to control file chunk size.

where does MySQL store database files?

WAMP stores the db data under WAMP\bin\mysql\mysql(version)\data. Where the WAMP folder itself is depends on where you installed it to (on xp, I believe it is directly in the main drive, for example c:\WAMP\...

If you deleted that folder, or if the uninstall deleted that folder, if you did not do a DB backup before the uninstall, you may be out of luck.

If you did do a backup though phpmyadmin, then login, and click the import tab, and browse to the backup file.

Posting array from form

Give each input a name in array format:

<input type="hidden" name="data[EstPriceInput]" value="" />

Then the in PHP $_POST['data']; will be an array:

  print_r($_POST);         // print out the whole post
  print_r($_POST['data']); // print out only the data array

How to unnest a nested list

itertools provides the chain function for that:

From http://docs.python.org/library/itertools.html#recipes:

def flatten(listOfLists):
    "Flatten one level of nesting"
    return chain.from_iterable(listOfLists)

Note that the result is an iterable, so you may need list(flatten(...)).

How do I reference the input of an HTML <textarea> control in codebehind?

You need to use runat="server" like this:

<textarea id="TextArea1" cols="20" rows="2" runat="server"></textarea>

You can use the runat=server attribute with any standard HTML element, and later use it from codebehind.

Bootstrap Modal immediately disappearing

A Likely Cause

This is typical behavior for when the JavaScript for the Modal plugin gets loaded twice. Please check to make sure that the plugin isn't getting double loaded. Depending on the platform you are using, the modal code could be loaded from a number a sources. Some of the common ones are:

bootstrap.js (the full BootStrap JS suite)
bootstrap.min.js (same as above, just minified)
bootstrap-modal.js (the standalone plugin)
a dependency loader, e.g., require('bootstrap')

Debugging Tips

A good place to start is to inspect the registered click event listeners using the developer tools in your browser. Chrome, for instance, will list the JS source file where the code to register the listener can be found. Another option is to try searching the sources on the page for a phrase found in the Modal code, e.g., var Modal.

Unfortunately, these won't always find things in all cases. Inspecting the network requests can be a little more robust at giving you a picture of everything loaded on a page.

A (Broken) Demo

Here's a demo of what happens when you load both the bootstrap.js and bootstrap-modal.js (just to confirm your experience):

Plunker

If you scroll down to the bottom of the source on that page, you can remove or comment out the <script> line for the bootstrap-modal.js and then verify that now the modal will function as expected.

How do you assert that a certain exception is thrown in JUnit 4 tests?

To solve the same problem I did set up a small project: http://code.google.com/p/catch-exception/

Using this little helper you would write

verifyException(foo, IndexOutOfBoundsException.class).doStuff();

This is less verbose than the ExpectedException rule of JUnit 4.7. In comparison to the solution provided by skaffman, you can specify in which line of code you expect the exception. I hope this helps.

Set up adb on Mac OS X

Here is a step wise information :

Step-1

Start up Terminal and go to your home folder.

cd ~/

Step-2

Open and edit .bash_profile file

$ open -e .bash_profile

If you don’t have .bash_profile file in your computer path, then create one. Enter below command to create a new file. Once created follow Step-2.

touch .bash_profile

Step-3

Save the below line)

export PATH=${PATH}:/Applications/adt-bundle-mac-x86_64-20140321/sdk/tools
export PATH=${PATH}:/Applications/adt-bundle-mac-x86_64-20140321/sdk/platform-tools

Step-4

Refresh the file using below command

$ source .bash_profile

$ echo $PATH

You should see your android path set in the output now.

How to create an array of 20 random bytes?

If you are already using Apache Commons Lang, the RandomUtils makes this a one-liner:

byte[] randomBytes = RandomUtils.nextBytes(20);

Note: this does not produce cryptographically-secure bytes.

How to convert all text to lowercase in Vim

I had a similar issue, and I wanted to use ":%s/old/new/g", but ended up using two commands:

:0
gu:$

$(this).serialize() -- How to add a value?

Don't forget you can always do:

<input type="hidden" name="NonFormName" value="NonFormValue" />

in your actual form, which may be better for your code depending on the case.

How to shift a block of code left/right by one space in VSCode?

Have a look at File > Preferences > Keyboard Shortcuts (or Ctrl+K Ctrl+S)

Search for cursorColumnSelectDown or cursorColumnSelectUp which will give you the relevent keyboard shortcut. For me it is Shift+Alt+Down/Up Arrow

Oracle query to identify columns having special characters

You can use regular expressions for this, so I think this is what you want:

select t.*
from test t
where not regexp_like(sampletext, '.*[^a-zA-Z0-9 .{}\[\]].*')

How to display PDF file in HTML?

I understand you want to display using HTMl but you can also open the PDF file using php by pointing out the path and the browser will render it in a few simple steps

<?php
$your_file_name = "url_here";

//Content type and this case its a PDF
header("Content-type: application/pdf");

header("Content-Length: " . filesize($your_file_name )); 

//Display the file
readfile($your_file_name );
?>

Is there a way to reset IIS 7.5 to factory settings?

What worked for me was going to the article someone else had already mentioned, but keying on this piece:

application.config.backup is not created by automatic backup. The backup files are in %systemdrive%\inetpub\history directory. Automatic backup is also a Vista SP1 and above feature. More information can be found in this blog post, http://blogs.iis.net/bills/archive/2008/03/24/how-to-backup-restore-iis7-configuration.aspx

I was able to find backups of my settings from when I had first installed IIS, and just copy and replace the files in the inetsrv\config directory.

Source: http://forums.iis.net/t/1085990.aspx

Using GCC to produce readable assembly?

use -Wa,-adhln as option on gcc or g++ to produce a listing output to stdout.

-Wa,... is for command line options for the assembler part (execute in gcc/g++ after C/++ compilation). It invokes as internally (as.exe in Windows). See

>as --help

as command line to see more help for the assembler tool inside gcc

What does "Error: object '<myvariable>' not found" mean?

While executing multiple lines of code in R, you need to first select all the lines of code and then click on "Run". This error usually comes up when we don't select our statements and click on "Run".

Is there a Subversion command to reset the working copy?

To remove untracked files

I was able to list all untracked files reported by svn st in bash by doing:

echo $(svn st | grep -P "^\?" | cut -c 9-)

If you are feeling lucky, you could replace echo with rm to delete untracked files. Or copy the files you want to delete by hand, if you are feeling a less lucky.

(I used @abe-voelker 's answer to revert the remaining files: https://stackoverflow.com/a/6204601/1695680)

Two column div layout with fluid left and fixed right column

_x000D_

#wrapper {_x000D_
  margin-right: 50%;_x000D_
}_x000D_
#content {_x000D_
  float: left;_x000D_
  width: 50%;_x000D_
  background-color: #CCF;_x000D_
}_x000D_
#sidebar {_x000D_
  float: right;_x000D_
  width: 200px;_x000D_
  margin-right: -200px;_x000D_
  background-color: #FFA;_x000D_
}_x000D_
#cleared {_x000D_
  clear: both;_x000D_
}

_x000D_

<div id="wrapper">_x000D_
  <div id="content">Column 1 (fluid)</div>_x000D_
  <div id="sidebar">Column 2 (fixed)</div>_x000D_
  <div id="cleared"></div>_x000D_
</div>

_x000D_

What are the differences between a clustered and a non-clustered index?

A clustered index is essentially a sorted copy of the data in the indexed columns.

The main advantage of a clustered index is that when your query (seek) locates the data in the index then no additional IO is needed to retrieve that data.

The overhead of maintaining a clustered index, especially in a frequently updated table, can lead to poor performance and for that reason it may be preferable to create a non-clustered index.

Convert a SQL query result table to an HTML table for email

Following piece of code, I have prepared for generating the HTML file for documentation which includes Table Name and Purpose in each table and Table Metadata information. It might be helpful!

use Your_Database_Name;
print '<!DOCTYPE html>'
PRINT '<html><body>'
SET NOCOUNT ON
DECLARE @tableName VARCHAR(30)
DECLARE tableCursor CURSOR LOCAL FAST_FORWARD FOR
    SELECT T.name AS TableName 
      FROM sys.objects AS T
     WHERE T.type_desc = 'USER_TABLE'
     ORDER BY T.name
OPEN tableCursor
FETCH NEXT FROM tableCursor INTO @tableName
WHILE @@FETCH_STATUS = 0 BEGIN
    print '<table>'
    print '<tr><td><b>Table Name: <b></td><td>'+@tableName+'</td></tr>'
    print '<tr><td><b>Prupose: <b></td><td>????YOu can Fill later????</td></tr>'
    print '</table>'

    print '<table>'
    print '<tr><th>ColumnName</th><th>DataType</th><th>Size</th><th>PrecScale</th><th>Nullable</th><th>Default</th><th>Identity</th><th>Remarks</th></tr>'
    SELECT  concat('<tr><td>',
            LEFT(C.name, 30) /*AS ColumnName*/,'</td><td>',
           LEFT(ISC.DATA_TYPE, 10) /*AS DataType*/,'</td><td>',
           C.max_length /*AS Size*/,'</td><td>',
           CAST(P.precision AS VARCHAR(4)) + '/' + CAST(P.scale AS VARCHAR(4)) /*AS PrecScale*/,'</td><td>',
           CASE WHEN C.is_nullable = 1 THEN 'Null' ELSE 'No Null' END /*AS [Nullable]*/,'</td><td>',
           LEFT(ISNULL(ISC.COLUMN_DEFAULT, ' '), 5)  /*AS [Default]*/,'</td><td>',
           CASE WHEN C.is_identity = 1 THEN 'Identity' ELSE '' END /*AS [Identity]*/,'</td><td></td></tr>')
    FROM   sys.objects AS T
           JOIN sys.columns AS C ON T.object_id = C.object_id
           JOIN sys.types AS P ON C.system_type_id = P.system_type_id and c.user_type_id = p.user_type_id
           JOIN INFORMATION_SCHEMA.COLUMNS AS ISC ON T.name = ISC.TABLE_NAME AND C.name = ISC.COLUMN_NAME
    WHERE  T.type_desc = 'USER_TABLE'
      AND  T.name = @tableName
    ORDER BY T.name, ISC.ORDINAL_POSITION
    print '</table>'
    print '</br>'
    FETCH NEXT FROM tableCursor INTO @tableName

END

CLOSE tableCursor
DEALLOCATE tableCursor
SET NOCOUNT OFF
PRINT '</body></html>'

python setup.py uninstall

The #1 answer has problems:

Won't work on mac.
If a file is installed which includes spaces or other special characters, the xargs command will fail, and delete any files/directories which matched the individual words.
the -r in rm -rf is unnecessary and at worst could delete things you don't want to.

Instead, for unix-like:

sudo python setup.py install --record files.txt
# inspect files.txt to make sure it looks ok. Then:
tr '\n' '\0' < files.txt | xargs -0 sudo rm -f --

And for windows:

python setup.py bdist_wininst
dist/foo-1.0.win32.exe

There are also unsolvable problems with uninstalling setup.py install which won't bother you in a typical case. For a more complete answer, see this wiki page:

https://ofswiki.org/wiki/Uninstalling_setup.py_install

How do I force a vertical scrollbar to appear?

html { overflow-y: scroll; }

This css rule causes a vertical scrollbar to always appear.

Source: http://css-tricks.com/snippets/css/force-vertical-scrollbar/

Create PDF with Java

Another alternative would be JasperReports: JasperReports Library. It uses iText itself and is more than a PDF library you asked for, but if it fits your needs I'd go for it.

Simply put, it allows you to design reports that can be filled during runtime. If you use a custom datasource, you might be able to integrate JasperReports easily into the existing system. It would save you the whole layouting troubles, e.g. when invoices span over more sites where each side should have a footer and so on.

push multiple elements to array

If you want to add multiple items, you have to use the spread operator

a = [1,2]
b = [3,4,5,6]
a.push(...b)

The output will be

a = [1,2,3,4,5,6]

How to check if directory exist using C++ and winAPI

0.1 second Google search:

BOOL DirectoryExists(const char* dirName) {
  DWORD attribs = ::GetFileAttributesA(dirName);
  if (attribs == INVALID_FILE_ATTRIBUTES) {
    return false;
  }
  return (attribs & FILE_ATTRIBUTE_DIRECTORY);
}

react change class name on state change

Below is a fully functional example of what I believe you're trying to do (with a functional snippet).

Explanation

Based on your question, you seem to be modifying 1 property in state for all of your elements. That's why when you click on one, all of them are being changed.

In particular, notice that the state tracks an index of which element is active. When MyClickable is clicked, it tells the Container its index, Container updates the state, and subsequently the isActive property of the appropriate MyClickables.

Example

_x000D_

class Container extends React.Component {_x000D_
  state = {_x000D_
    activeIndex: null_x000D_
  }_x000D_
_x000D_
  handleClick = (index) => this.setState({ activeIndex: index })_x000D_
_x000D_
  render() {_x000D_
    return <div>_x000D_
      <MyClickable name="a" index={0} isActive={ this.state.activeIndex===0 } onClick={ this.handleClick } />_x000D_
      <MyClickable name="b" index={1} isActive={ this.state.activeIndex===1 } onClick={ this.handleClick }/>_x000D_
      <MyClickable name="c" index={2} isActive={ this.state.activeIndex===2 } onClick={ this.handleClick }/>_x000D_
    </div>_x000D_
  }_x000D_
}_x000D_
_x000D_
class MyClickable extends React.Component {_x000D_
  handleClick = () => this.props.onClick(this.props.index)_x000D_
  _x000D_
  render() {_x000D_
    return <button_x000D_
      type='button'_x000D_
      className={_x000D_
        this.props.isActive ? 'active' : 'album'_x000D_
      }_x000D_
      onClick={ this.handleClick }_x000D_
    >_x000D_
      <span>{ this.props.name }</span>_x000D_
    </button>_x000D_
  }_x000D_
}_x000D_
_x000D_
ReactDOM.render(<Container />, document.getElementById('app'))

_x000D_

button {_x000D_
  display: block;_x000D_
  margin-bottom: 1em;_x000D_
}_x000D_
_x000D_
.album>span:after {_x000D_
  content: ' (an album)';_x000D_
}_x000D_
_x000D_
.active {_x000D_
  font-weight: bold;_x000D_
}_x000D_
_x000D_
.active>span:after {_x000D_
  content: ' ACTIVE';_x000D_
}

_x000D_

<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.6.1/react.min.js"></script>_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.6.1/react-dom.min.js"></script>_x000D_
<div id="app"></div>

_x000D_

Update: "Loops"

In response to a comment about a "loop" version, I believe the question is about rendering an array of MyClickable elements. We won't use a loop, but map, which is typical in React + JSX. The following should give you the same result as above, but it works with an array of elements.

// New render method for `Container`
render() {
  const clickables = [
    { name: "a" },
    { name: "b" },
    { name: "c" },
  ]

  return <div>
      { clickables.map(function(clickable, i) {
          return <MyClickable key={ clickable.name }
            name={ clickable.name }
            index={ i }
            isActive={ this.state.activeIndex === i }
            onClick={ this.handleClick }
          />
        } )
      }
  </div>
}

typescript: error TS2693: 'Promise' only refers to a type, but is being used as a value here

Had the same issue with typescript and the aws-sdk. The solve was to change the target to es6.

My complete tsconfig.json file:

{
        compilerOptions: {
                outDir: ./dist/,
                sourceMap: true,
                noImplicitAny: true,
                module: commonjs,
                target: es6,
                jsx: react,
                allowJs: true
        },
        include: [
                ./src/**/*
    ]
}

Listing all extras of an Intent

If for debugging all you want is a string (sort of implied by the OP but not explicitly stated), simply use toString on the extras Bundle:

intent.getExtras().toString()

It returns a string such as:

Bundle[{key1=value1, key2=value2, key3=value3}]

Documentation: Bundle.toString() (it's unfortunately the default Object.toString() javadoc and as such quite useless here.)

Sending SMS from PHP

Clickatell is a popular SMS gateway. It works in 200+ countries.

Their API offers a choice of connection options via: HTTP/S, SMPP, SMTP, FTP, XML, SOAP. Any of these options can be used from php.

The HTTP/S method is as simple as this:

http://api.clickatell.com/http/sendmsg?to=NUMBER&msg=Message+Body+Here

The SMTP method consists of sending a plain-text e-mail to: [email protected], with the following body:

user: xxxxx
password: xxxxx
api_id: xxxxx
to: 448311234567
text: Meet me at home

You can also test the gateway (incoming and outgoing) for free from your browser

How to handle an IF STATEMENT in a Mustache template?

Mustache templates are, by design, very simple; the homepage even says:

Logic-less templates.

So the general approach is to do your logic in JavaScript and set a bunch of flags:

if(notified_type == "Friendship")
    data.type_friendship = true;
else if(notified_type == "Other" && action == "invite")
    data.type_other_invite = true;
//...

and then in your template:

{{#type_friendship}}
    friendship...
{{/type_friendship}}
{{#type_other_invite}}
    invite...
{{/type_other_invite}}

If you want some more advanced functionality but want to maintain most of Mustache's simplicity, you could look at Handlebars:

Handlebars provides the power necessary to let you build semantic templates effectively with no frustration.

Mustache templates are compatible with Handlebars, so you can take a Mustache template, import it into Handlebars, and start taking advantage of the extra Handlebars features.

How to change font of UIButton with Swift

this work for me, thanks. I want change text size only not change font name.

var fontSizeButtonBig:Int = 30

btnMenu9.titleLabel?.font = .systemFont(ofSize: CGFloat(fontSizeButtonBig))

Generating a random hex color code with PHP

$color = sprintf("#%06x",rand(0,16777215));

Using a dictionary to select function to execute

Not proud of it, but:

def myMain(key):
    def ExecP1():
        pass
    def ExecP2():
        pass
    def ExecP3():
        pass
    def ExecPn():
        pass 
    locals()['Exec' + key]()

I do however recommend that you put those in a module/class whatever, this is truly horrible.

Bootstrap full responsive navbar with logo or brand name text

I set .navbar-brand { min-height: inherit } which solved the issue for me (thanks @creimers for inspiration).

How to call VS Code Editor from terminal / command line

Open command line and type:

cd your_folder_path
code.cmd .

code.cmd your_folder_path

It will open your folder in Visual Studio Code. Make Sure, you are inside the correct folder after executing "cd your_folder_path" command.

How does Google calculate my location on a desktop?

I've finally worked it out. The biggest issue is how they managed to work out what Wireless networks were around me and how do they know where these networks are.

It "seems" to be something similar to this:

skyhookwireless.com [or similar] Company has mapped the location of many wireless access points, i assume by similar means that google streetview went around and picked up all the photos.
Using Google gears and my browser, we can report which wireless networks i see and have around me
Compare these wireless points to their geolocation and triangulate my position.

Reference: Slashdot

The 'Access-Control-Allow-Origin' header contains multiple values

if you are in IIS you need to activate CORS in web.config, then you don't need to enable in App_Start/WebApiConfig.cs Register method

My solution was, commented the lines here:

// Enable CORS
//EnableCorsAttribute cors = new EnableCorsAttribute("*", "*", "*");
//config.EnableCors(cors);

and write in the web.config:

<system.webServer>
  <httpProtocol>
  <customHeaders>
    <add name="Access-Control-Allow-Origin" value="*" />
  </customHeaders>
</httpProtocol>

Is there a CSS selector for elements containing certain text?

Looks like they were thinking about it for the CSS3 spec but it didn't make the cut.

:contains() CSS3 selector http://www.w3.org/TR/css3-selectors/#content-selectors

How do you add an array to another array in Ruby and not end up with a multi-dimensional result?

If the new data could be an array or a scalar, and you want to prevent the new data to be nested if it was an array, the splat operator is awesome! It returns a scalar for a scalar, and an unpacked list of arguments for an array.

1.9.3-p551 :020 > a = [1, 2]
 => [1, 2] 
1.9.3-p551 :021 > b = [3, 4]
 => [3, 4] 
1.9.3-p551 :022 > c = 5
 => 5 
1.9.3-p551 :023 > a.object_id
 => 6617020 
1.9.3-p551 :024 > a.push *b
 => [1, 2, 3, 4] 
1.9.3-p551 :025 > a.object_id
 => 6617020 
1.9.3-p551 :026 > a.push *c
 => [1, 2, 3, 4, 5] 
1.9.3-p551 :027 > a.object_id
 => 6617020

jquery append external html file into my page

Use html instead of append:

$.get("banner.html", function(data){
    $(this).children("div:first").html(data);
});

Smooth scroll to div id jQuery

You need to animate the html, body

DEMO http://jsfiddle.net/kevinPHPkevin/8tLdq/1/

$("#button").click(function() {
    $('html, body').animate({
        scrollTop: $("#myDiv").offset().top
    }, 2000);
});

Detect a finger swipe through JavaScript on the iPhone and Android

Some mod of uppest answer(can't comment...) to deal with to short swipes

document.addEventListener('touchstart', handleTouchStart, false);        
document.addEventListener('touchmove', handleTouchMove, false);
var xDown = null;                                                        
var yDown = null;                                                        
function handleTouchStart(evt) {                                         
    xDown = evt.touches[0].clientX;                                      
    yDown = evt.touches[0].clientY;                                      
};                                                
function handleTouchMove(evt) {
    if ( ! xDown || ! yDown ) {
        return;
    }

    var xUp = evt.touches[0].clientX;                                    
    var yUp = evt.touches[0].clientY;

    var xDiff = xDown - xUp;
    var yDiff = yDown - yUp;
    if(Math.abs( xDiff )+Math.abs( yDiff )>150){ //to deal with to short swipes

    if ( Math.abs( xDiff ) > Math.abs( yDiff ) ) {/*most significant*/
        if ( xDiff > 0 ) {/* left swipe */ 
            alert('left!');
        } else {/* right swipe */
            alert('right!');
        }                       
    } else {
        if ( yDiff > 0 ) {/* up swipe */
            alert('Up!'); 
        } else { /* down swipe */
            alert('Down!');
        }                                                                 
    }
    /* reset values */
    xDown = null;
    yDown = null;
    }
};

What is the difference between Bootstrap .container and .container-fluid classes?

Updated 2019

The basic difference is that container is scales responsively, while container-fluid is always width:100%. Therefore in the root CSS definitions, they appear the same, but if you look further you'll see that .container is bound to media queries.

Bootstrap 4

The container has 5 widths...

.container {
  width: 100%;
}

@media (min-width: 576px) {
  .container {
    max-width: 540px;
  }
}

@media (min-width: 768px) {
  .container {
    max-width: 720px;
  }
}

@media (min-width: 992px) {
  .container {
    max-width: 960px;
  }
}

@media (min-width: 1200px) {
  .container {
    max-width: 1140px;
  }
}

Bootstrap 3

The container has 4 sizes. Full width on xs screens, and then it's width varies based on the following media queries..

    @media (min-width: 1200px) {
        .container {
            width: 1170px;
        }
    }
    @media (min-width: 992px) {
        .container {
            width: 970px;
        }
    }
    @media (min-width: 768px) {
        .container {
            width: 750px;
        }
    }

container vs. container-fluid demo

Import CSV file with mixed data types

Given the sample you posted, this simple code should do the job:

fid = fopen('file.csv','r');
C = textscan(fid, repmat('%s',1,10), 'delimiter',';', 'CollectOutput',true);
C = C{1};
fclose(fid);

Then you could format the columns according to their type. For example if the first column is all integers, we can format it as such:

C(:,1) = num2cell( str2double(C(:,1)) )

Similarly, if you wish to convert the 8th column from hex to decimals, you can use HEX2DEC:

C(:,8) = cellfun(@hex2dec, strrep(C(:,8),'0x',''), 'UniformOutput',false);

The resulting cell array looks as follows:

C = 
    [  4]    'abc'    'def'    'ghj'    'klm'    ''            ''                []    ''    ''
    [NaN]    ''       ''       ''       ''       'Test'        'text'        [ 255]    ''    ''
    [NaN]    ''       ''       ''       ''       'asdfhsdf'    'dsafdsag'    [3855]    ''    ''

"std::endl" vs "\n"

There might be performance issues, std::endl forces a flush of the output stream.

How do I create an .exe for a Java program?

Launch4j perhaps? Can't say I've used it myself, but it sounds like what you're after.

How to write specific CSS for mozilla, chrome and IE

You could use php to echo the browser name as a body class, e.g.

<body class="mozilla">

Then, your conditional CSS would look like

.ie #container { top: 5px;}
.mozilla #container { top: 5px;}
.chrome #container { top: 5px;}

Can you center a Button in RelativeLayout?

To center align in one of the direction use android:layout_centerHorizontal="true" or android:layout_centerVertical="true" in the child layout

Isn't the size of character in Java 2 bytes?

A char represents a character in Java ^(*). It is 2 bytes large (at least that's what the valid value range suggests).

That doesn't necessarily mean that every representation of a character is 2 bytes long. In fact many encodings only reserve 1 byte for every character (or use 1 byte for the most common characters).

When you call the String(byte[]) constructor you ask Java to convert the byte[] to a String using the platform default encoding. Since the platform default encoding is usually a 1-byte encoding such as ISO-8859-1 or a variable-length encoding such as UTF-8, it can easily convert that 1 byte to a single character.

If you run that code on a platform that uses UTF-16 (or UTF-32 or UCS-2 or UCS-4 or ...) as the platform default encoding, then you will not get a valid result (you'll get a String containing the Unicode Replacement Character instead).

That's one of the reasons why you should not depend on the platform default encoding: when converting between byte[] and char[]/String or between InputStream and Reader or between OutputStream and Writer, you should always specify which encoding you want to use. If you don't, then your code will be platform-dependent.

^{(*) that's not entirely true: a char represents a UTF-16 codepoint. Either one or two UTF-16 codepoints represent a Unicode codepoint. A Unicode codepoint usually represents a character, but sometimes multiple Unicode codepoints are used to make up a single character. But the approximation above is close enough to discuss the topic at hand.}

Sieve of Eratosthenes - Finding Primes Python

A simple speed hack: when you define the variable "primes," set the step to 2 to skip all even numbers automatically, and set the starting point to 1.

Then you can further optimize by instead of for i in primes, use for i in primes[:round(len(primes) ** 0.5)]. That will dramatically increase performance. In addition, you can eliminate numbers ending with 5 to further increase speed.

Create XML in Javascript

Disclaimer: The following answer assumes that you are using the JavaScript environment of a web browser.

JavaScript handles XML with 'XML DOM objects'. You can obtain such an object in three ways:

1. Creating a new XML DOM object

var xmlDoc = document.implementation.createDocument(null, "books");

The first argument can contain the namespace URI of the document to be created, if the document belongs to one.

Source: https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/createDocument

2. Fetching an XML file with XMLHttpRequest

var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
if (xhttp.readyState == 4 && xhttp.status == 200) {

    var xmlDoc = xhttp.responseXML; //important to use responseXML here
}
xhttp.open("GET", "books.xml", true);
xhttp.send();

3. Parsing a string containing serialized XML

var xmlString = "<root></root>";
var parser = new DOMParser();
var xmlDoc = parser.parseFromString(xmlString, "text/xml"); //important to use "text/xml"

When you have obtained an XML DOM object, you can use methods to manipulate it like

var node = xmlDoc.createElement("heyHo");
var elements = xmlDoc.getElementsByTagName("root");
elements[0].appendChild(node);

For a full reference, see http://www.w3schools.com/xml/dom_intro.asp

Note: It is important, that you don't use the methods provided by the document namespace, i. e.

var node = document.createElement("Item");

This will create HTML nodes instead of XML nodes and will result in a node with lower-case tag names. XML tag names are case-sensitive in contrast to HTML tag names.

You can serialize XML DOM objects like this:

var serializer = new XMLSerializer();
var xmlString = serializer.serializeToString(xmlDoc);

php.ini & SMTP= - how do you pass username & password

Use Mail::factory in the Mail PEAR package. Example.

Recursively find all files newer than a given time

You can find every file what is created/modified in the last day, use this example:

find /directory -newermt $(date +%Y-%m-%d -d '1 day ago') -type f -print

for finding everything in the last week, use '1 week ago' or '7 day ago' anything you want

DataTrigger where value is NOT null?

My solution is in the DataContext instance (or ViewModel if using MVVM). I add a property that returns true if the Not Null condition I want is met.

    Public ReadOnly Property IsSomeFieldNull() As Boolean
        Get
            Return If(SomeField is Null, True, False)
        End Get
    End Property

and bind the DataTrigger to the above property. Note: In VB.NET be sure to use the operator If and NOT the IIf function, which doesn't work with Null objects. Then the XAML is:

    <DataTrigger Binding="{Binding IsSomeFieldNull}" Value="False">
      <Setter Property="TextBlock.Text" Value="It's NOT NULL Baby!" />
    </DataTrigger>

How to add results of two select commands in same query

If you want to make multiple operation use

select (sel1.s1+sel2+s2)

(select sum(hours) s1 from resource) sel1
join 
(select sum(hours) s2 from projects-time)sel2
on sel1.s1=sel2.s2

Limit on the WHERE col IN (...) condition

You can use tuples like this: SELECT * FROM table WHERE (Col, 1) IN ((123,1),(123,1),(222,1),....)

There are no restrictions on number of these. It compares pairs.

Recreating a Dictionary from an IEnumerable<KeyValuePair<>>

As of .NET Core 2.0, the constructor Dictionary<TKey,TValue>(IEnumerable<KeyValuePair<TKey,TValue>>) now exists.

In android how to set navigation drawer header image and name programmatically in class file?

As mentioned in the bug 190226, Since version 23.1.0 getting header layout view with: navigationView.findViewById(R.id.navigation_header_text) no longer works.

A workaround is to inflate the headerview programatically and find view by ID from the inflated header view.

For example:

View headerView = navigationView.inflateHeaderView(R.layout.navigation_header);
headerView.findViewById(R.id.navigation_header_text);

Ideally there should be a method getHeaderView() but it has already been proposed, let's see and wait for it to be released in the feature release of design support library.

Pandas Merge - How to avoid duplicating columns

You can work out the columns that are only in one DataFrame and use this to select a subset of columns in the merge.

cols_to_use = df2.columns.difference(df.columns)

Then perform the merge (note this is an index object but it has a handy tolist() method).

dfNew = merge(df, df2[cols_to_use], left_index=True, right_index=True, how='outer')

This will avoid any columns clashing in the merge.

Can I call a function of a shell script from another shell script?

If you define

    #!/bin/bash
        fun1(){
          echo "Fun1 from file1 $1"
        }
fun1 Hello
. file2 
fun1 Hello
exit 0

in file1(chmod 750 file1) and file2

   fun1(){
      echo "Fun1 from file2 $1"
    }
    fun2(){
      echo "Fun1 from file1 $1"
    }

and run ./file2 you'll get Fun1 from file1 Hello Fun1 from file2 Hello Surprise!!! You overwrite fun1 in file1 with fun1 from file2... So as not to do so you must

declare -f pr_fun1=$fun1
. file2
unset -f fun1
fun1=$pr_fun1
unset -f pr_fun1
fun1 Hello

it's save your previous definition for fun1 and restore it with the previous name deleting not needed imported one. Every time you import functions from another file you may remember two aspects:

you may overwrite existing ones with the same names(if that the thing you want you must preserve them as described above)
import all content of import file(functions and global variables too) Be careful! It's dangerous procedure

How to correctly set the ORACLE_HOME variable on Ubuntu 9.x?

This is the right way to clear this error.

export ORACLE_HOME=/u01/app/oracle/product/10.2.0/db_1 sqlplus / as sysdba

Store output of sed into a variable

line=`sed -n 2p myfile`
echo $line

How to list all properties of a PowerShell object

You can also use:

Get-WmiObject -Class "Win32_computersystem" | Select *

This will show the same result as Format-List * used in the other answers here.

How to pass parameters in $ajax POST?

Your code was right except you are not passing the JSON keys as strings.

It should have double or single quotes around it

{ "field1": "hello", "field2" : "hello2"}

$.ajax(
   {
      type: 'post',
      url: 'superman',
      data: { 
        "field1": "hello", // Quotes were missing
        "field2": "hello1" // Here also
      },
      success: function (response) {
        alert(response);
      },
      error: function () {
        alert("error");
      }
   }
);

How to set margin with jquery?

try

el.css('margin-left',mrg+'px');

CodeIgniter: How to use WHERE clause and OR clause

$where = "name='Joe' AND status='boss' OR status='active'";

$this->db->where($where);

Though I am 3/4 of a month late, you still execute the following after your where clauses are defined... $this->db->get("tbl_name");

How to verify a method is called two times with mockito verify()

Using the appropriate VerificationMode:

import static org.mockito.Mockito.atLeast;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;

verify(mockObject, atLeast(2)).someMethod("was called at least twice");
verify(mockObject, times(3)).someMethod("was called exactly three times");

Change Title of Javascript Alert

you cant do this. Use a custom popup. Something like with the help of jQuery UI or jQuery BOXY.

for jQuery UI http://jqueryui.com/demos/dialog/

for jQuery BOXY http://onehackoranother.com/projects/jquery/boxy/

How to get the changes on a branch in Git

Throw a -p in there to see some FILE CHANGES

git log -p master..branch

Make some aliases:

alias gbc="git branch --no-color | sed -e '/^[^\*]/d' -e 's/* \\(.*\\)/\1/'"

alias gbl='git log -p master..\`gbc\`'

See a branch's unique commits:

gbl

Bootstrap 3 .img-responsive images are not responsive inside fieldset in FireFox

In my case I only wanted the image to behave responsively at mobile scale so I created a css style .myimgrsfix that only kicks in at mobile scale

.myimgrsfix {
    @media(max-width:767px){
        width:100%;
    }
}

and applied that to the image <img class='img-responsive myimgrsfix' src='whatever.gif'>

how to define ssh private key for servers fetched by dynamic inventory in files

TL;DR: Specify key file in group variable file, since 'tag_Name_server1' is a group.

Note: I'm assuming you're using the EC2 external inventory script. If you're using some other dynamic inventory approach, you might need to tweak this solution.

This is an issue I've been struggling with, on and off, for months, and I've finally found a solution, thanks to Brian Coca's suggestion here. The trick is to use Ansible's group variable mechanisms to automatically pass along the correct SSH key file for the machine you're working with.

The EC2 inventory script automatically sets up various groups that you can use to refer to hosts. You're using this in your playbook: in the first play, you're telling Ansible to apply 'role1' to the entire 'tag_Name_server1' group. We want to direct Ansible to use a specific SSH key for any host in the 'tag_Name_server1' group, which is where group variable files come in.

Assuming that your playbook is located in the 'my-playbooks' directory, create files for each group under the 'group_vars' directory:

my-playbooks
|-- test.yml
+-- group_vars
     |-- tag_Name_server1.yml
     +-- tag_Name_server2.yml

Now, any time you refer to these groups in a playbook, Ansible will check the appropriate files, and load any variables you've defined there.

Within each group var file, we can specify the key file to use for connecting to hosts in the group:

# tag_Name_server1.yml
# --------------------
# 
# Variables for EC2 instances named "server1"
---
ansible_ssh_private_key_file: /path/to/ssh/key/server1.pem

Now, when you run your playbook, it should automatically pick up the right keys!

Using environment vars for portability

I often run playbooks on many different servers (local, remote build server, etc.), so I like to parameterize things. Rather than using a fixed path, I have an environment variable called SSH_KEYDIR that points to the directory where the SSH keys are stored.

In this case, my group vars files look like this, instead:

# tag_Name_server1.yml
# --------------------
# 
# Variables for EC2 instances named "server1"
---
ansible_ssh_private_key_file: "{{ lookup('env','SSH_KEYDIR') }}/server1.pem"

Further Improvements

There's probably a bunch of neat ways this could be improved. For one thing, you still need to manually specify which key to use for each group. Since the EC2 inventory script includes details about the keypair used for each server, there's probably a way to get the key name directly from the script itself. In that case, you could supply the directory the keys are located in (as above), and have it choose the correct keys based on the inventory data.

How to export and import environment variables in windows?

My favorite method for doing this is to write it out as a batch script to combine both user variables and system variables into a single backup file like so, create an environment-backup.bat file and put in it:

@echo off
:: RegEdit can only export into a single file at a time, so create two temporary files.
regedit /e "%CD%\environment-backup1.reg" "HKEY_CURRENT_USER\Environment"
regedit /e "%CD%\environment-backup2.reg" "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment"

:: Concatenate into a single file and remove temporary files.
type "%CD%\environment-backup1.reg" "%CD%\environment-backup2.reg" > environment-backup.reg
del "%CD%\environment-backup1.reg"
del "%CD%\environment-backup2.reg"

This creates environment-backup.reg which you can use to re-import existing environment variables. This will add & override new variables, but not delete existing ones :)

Passing A List Of Objects Into An MVC Controller Method Using jQuery Ajax

Wrapping your list of objects with another object containing a property that matches the name of the parameter which is expected by the MVC controller works. The important bit being the wrapper around the object list.

$(document).ready(function () {
    var employeeList = [
        { id: 1, name: 'Bob' },
        { id: 2, name: 'John' },
        { id: 3, name: 'Tom' }
    ];      

    var Employees = {
      EmployeeList: employeeList
    }

    $.ajax({
        dataType: 'json',
        type: 'POST',
        url: '/Employees/Process',
        data: Employees,
        success: function () {          
            $('#InfoPanel').html('It worked!');
        },
        failure: function (response) {          
            $('#InfoPanel').html(response);
        }
    }); 
});


public void Process(List<Employee> EmployeeList)
{
    var emps = EmployeeList;
}

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

Best way to reverse a string

public string Reverse(string input)
{
    char[] output = new char[input.Length];

    int forwards = 0;
    int backwards = input.Length - 1;

    do
    {
        output[forwards] = input[backwards];
        output[backwards] = input[forwards];
    }while(++forwards <= --backwards);

    return new String(output);
}

public string DotNetReverse(string input)
{
    char[] toReverse = input.ToCharArray();
    Array.Reverse(toReverse);
    return new String(toReverse);
}

public string NaiveReverse(string input)
{
    char[] outputArray = new char[input.Length];
    for (int i = 0; i < input.Length; i++)
    {
        outputArray[i] = input[input.Length - 1 - i];
    }

    return new String(outputArray);
}    

public string RecursiveReverse(string input)
{
    return RecursiveReverseHelper(input, 0, input.Length - 1);
}

public string RecursiveReverseHelper(string input, int startIndex , int endIndex)
{
    if (startIndex == endIndex)
    {
        return "" + input[startIndex];
    }

    if (endIndex - startIndex == 1)
    {
        return "" + input[endIndex] + input[startIndex];
    }

    return input[endIndex] + RecursiveReverseHelper(input, startIndex + 1, endIndex - 1) + input[startIndex];
}


void Main()
{
    int[] sizes = new int[] { 10, 100, 1000, 10000 };
    for(int sizeIndex = 0; sizeIndex < sizes.Length; sizeIndex++)
    {
        string holaMundo  = "";
        for(int i = 0; i < sizes[sizeIndex]; i+= 5)
        {   
            holaMundo += "ABCDE";
        }

        string.Format("\n**** For size: {0} ****\n", sizes[sizeIndex]).Dump();

        string odnuMaloh = DotNetReverse(holaMundo);

        var stopWatch = Stopwatch.StartNew();
        string result = NaiveReverse(holaMundo);
        ("Naive Ticks: " + stopWatch.ElapsedTicks).Dump();

        stopWatch.Restart();
        result = Reverse(holaMundo);
        ("Efficient linear Ticks: " + stopWatch.ElapsedTicks).Dump();

        stopWatch.Restart();
        result = RecursiveReverse(holaMundo);
        ("Recursive Ticks: " + stopWatch.ElapsedTicks).Dump();

        stopWatch.Restart();
        result = DotNetReverse(holaMundo);
        ("DotNet Reverse Ticks: " + stopWatch.ElapsedTicks).Dump();
    }
}

Output

For size: 10

Naive Ticks: 1
Efficient linear Ticks: 0
Recursive Ticks: 2
DotNet Reverse Ticks: 1

For size: 100

Naive Ticks: 2
Efficient linear Ticks: 1
Recursive Ticks: 12
DotNet Reverse Ticks: 1

For size: 1000

Naive Ticks: 5
Efficient linear Ticks: 2
Recursive Ticks: 358
DotNet Reverse Ticks: 9

For size: 10000

Naive Ticks: 32
Efficient linear Ticks: 28
Recursive Ticks: 84808
DotNet Reverse Ticks: 33

Efficient way to Handle ResultSet in Java

i improved the solutions of RHTs/Brad Ms and of Lestos answer.

i extended both solutions in leaving the state there, where it was found. So i save the current ResultSet position and restore it after i created the maps.

The rs is the ResultSet, its a field variable and so in my solutions-snippets not visible.

I replaced the specific Map in Brad Ms solution to the gerneric Map.

    public List<Map<String, Object>> resultAsListMap() throws SQLException
    {
        var md = rs.getMetaData();
        var columns = md.getColumnCount();
        var list = new ArrayList<Map<String, Object>>();

        var currRowIndex = rs.getRow();
        rs.beforeFirst();

        while (rs.next())
        {
            HashMap<String, Object> row = new HashMap<String, Object>(columns);
            for (int i = 1; i <= columns; ++i)
            {
                row.put(md.getColumnName(i), rs.getObject(i));
            }

            list.add(row);
        }

        rs.absolute(currRowIndex);

        return list;
    }

In Lestos solution, i optimized the code. In his code he have to lookup the Maps each iteration of that for-loop. I reduced that to only one array-acces each for-loop iteration. So the program must not seach each iteration step for that string-key.

    public Map<String, List<Object>> resultAsMapList() throws SQLException
    {
        var md = rs.getMetaData();
        var columns = md.getColumnCount();
        var tmp = new ArrayList[columns];
        var map = new HashMap<String, List<Object>>(columns);

        var currRowIndex = rs.getRow();
        rs.beforeFirst();

        for (int i = 1; i <= columns; ++i)
        {
            tmp[i - 1] = new ArrayList<>();
            map.put(md.getColumnName(i), tmp[i - 1]);
        }

        while (rs.next())
        {
            for (int i = 1; i <= columns; ++i)
            {
                tmp[i - 1].add(rs.getObject(i));
            }
        }

        rs.absolute(currRowIndex);

        return map;
    }

Ruby: kind_of? vs. instance_of? vs. is_a?

It is more Ruby-like to ask objects whether they respond to a method you need or not, using respond_to?. This allows both minimal interface and implementation unaware programming.

It is not always applicable of course, thus there is still a possibility to ask about more conservative understanding of "type", which is class or a base class, using the methods you're asking about.

Exporting result of select statement to CSV format in DB2

According to the docs, you want to export of type del (the default delimiter looks like a comma, which is what you want). See the doc page for more information on the EXPORT command.

Is it possible to change the location of packages for NuGet?

In order to change the path for projects using PackageReference instead of packages.config you need to use globalPackagesFolder

From https://docs.microsoft.com/en-us/nuget/reference/nuget-config-file

globalPackagesFolder (projects using PackageReference only)

The location of the default global packages folder. The default is %userprofile%.nuget\packages (Windows) or ~/.nuget/packages (Mac/Linux). A relative path can be used in project-specific nuget.config files. This setting is overridden by the NUGET_PACKAGES environment variable, which takes precedence.

repositoryPath (packages.config only)

The location in which to install NuGet packages instead of the default $(Solutiondir)/packages folder. A relative path can be used in project-specific nuget.config files. This setting is overridden by the NUGET_PACKAGES environment variable, which takes precedence.

<config>
    <add key="globalPackagesFolder" value="c:\packageReferences" />
    <add key="repositoryPath" value="c:\packagesConfig" />
</config>

I put Nuget.config next to my solution file and it worked.

"PKIX path building failed" and "unable to find valid certification path to requested target"

For me, certificate error popped up because I had fiddler running in background and that messes up with certificate. It acts as a proxy so close that and restart eclipse.

R Not in subset

The expression df1$id %in% idNums1 produces a logical vector. To negate it, you need to negate the whole vector:

!(df1$id %in% idNums1)

How do I 'overwrite', rather than 'merge', a branch on another branch in Git?

Other answers looked incomplete.
I have tried below in full, and it worked fine.

NOTE:
1. Make a copy of your repository before you try below, to be on safe side.

Details:
1. All development happens in dev branch
2. qa branch is just the same copy of dev
3. Time to time, dev code needs to be moved/overwrite to qa branch

so we need to overwrite qa branch, from dev branch

Part 1:
With below commands, old qa has been updated to newer dev:

git checkout dev
git merge -s ours qa
git checkout qa
git merge dev
git push

Automatic comment for last push gives below:

// Output:
//  *<MYNAME> Merge branch 'qa' into dev,*

This comment looks reverse, because above sequence also looks reverse

Part 2:

Below are unexpected, new local commits in dev, the unnecessary ones
so, we need to throw away, and make dev untouched.

git checkout dev

// Output:
//  Switched to branch 'dev'  
//  Your branch is ahead of 'origin/dev' by 15 commits.  
//  (use "git push" to publish your local commits)


git reset --hard origin/dev  

//  Now we threw away the unexpected commits

Part 3:
Verify everything is as expected:

git status  

// Output:
//  *On branch dev  
//  Your branch is up-to-date with 'origin/dev'.  
//  nothing to commit, working tree clean*

That's all.
1. old qa is now overwritten by new dev branch code
2. local is clean (remote origin/dev is untouched)

Disable and enable buttons in C#

Change this

button2.Enabled == true

button2.Enabled = true;

Find Number of CPUs and Cores per CPU using Command Prompt

If you want to find how many processors (or CPUs) a machine has the same way %NUMBER_OF_PROCESSORS% shows you the number of cores, save the following script in a batch file, for example, GetNumberOfCores.cmd:

@echo off
for /f "tokens=*" %%f in ('wmic cpu get NumberOfCores /value ^| find "="') do set %%f

And then execute like this:

GetNumberOfCores.cmd

echo %NumberOfCores%

The script will set a environment variable named %NumberOfCores% and it will contain the number of processors.

How do I represent a time only value in .NET?

I think Rubens' class is a good idea so thought to make an immutable sample of his Time class with basic validation.

class Time
{
    public int Hours   { get; private set; }
    public int Minutes { get; private set; }
    public int Seconds { get; private set; }

    public Time(uint h, uint m, uint s)
    {
        if(h > 23 || m > 59 || s > 59)
        {
            throw new ArgumentException("Invalid time specified");
        }
        Hours = (int)h; Minutes = (int)m; Seconds = (int)s;
    }

    public Time(DateTime dt)
    {
        Hours = dt.Hour;
        Minutes = dt.Minute;
        Seconds = dt.Second;
    }

    public override string ToString()
    {  
        return String.Format(
            "{0:00}:{1:00}:{2:00}",
            this.Hours, this.Minutes, this.Seconds);
    }
}

Convert Java String to sql.Timestamp

If you get time as string in format such as 1441963946053 you simply could do something as following:

//String timestamp;
Long miliseconds = Long.valueOf(timestamp);
Timestamp ti = new Timestamp(miliseconds);

What does -1 mean in numpy reshape?

According to the documentation:

newshape : int or tuple of ints

The new shape should be compatible with the original shape. If an integer, then the result will be a 1-D array of that length. One shape dimension can be -1. In this case, the value is inferred from the length of the array and remaining dimensions.

remove first element from array and return the array minus the first element

This can be done in one line with lodash _.tail:

_x000D_

var arr = ["item 1", "item 2", "item 3", "item 4"];_x000D_
console.log(_.tail(arr));

_x000D_

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.min.js"></script>

_x000D_

jquery : focus to div is not working

you can use the below code to bring focus to a div, in this example the page scrolls to the <div id="navigation">

$('html, body').animate({ scrollTop: $('#navigation').offset().top }, 'slow');

How does one remove a Docker image?

In my case the probleme is that I have tow images withe same name the solution is to add the tag after the name or the id

sudo docker rmi <NAME>:<TAG>

ex:

sudo docker rmi php:7.0.4-fpm

Write / add data in JSON file using Node.js

I agree with above answers, Here is a complete read and write sample for anyone who needs it.

     router.post('/', function(req, res, next) {

        console.log(req.body);
        var id = Math.floor((Math.random()*100)+1);

        var tital = req.body.title;
        var description = req.body.description;
        var mynotes = {"Id": id, "Title":tital, "Description": description};
        
        fs.readFile('db.json','utf8', function(err,data){
            var obj = JSON.parse(data);
            obj.push(mynotes);
            var strNotes = JSON.stringify(obj);
            fs.writeFile('db.json',strNotes, function(err){
                if(err) return console.log(err);
                console.log('Note added');
            });

        })
        
        
    });

How to update multiple columns in single update statement in DB2

The update statement in all versions of SQL looks like:

update table
    set col1 = expr1,
        col2 = expr2,
        . . .
        coln = exprn
    where some condition

So, the answer is that you separate the assignments using commas and don't repeat the set statement.

how to implement regions/code collapse in javascript

Not only for VS but nearly for all editors.

(function /* RegionName */ () { ... })();

Warning: has disadvantages such as scope.

Change value of input placeholder via model?

Since AngularJS does not have directive DOM manipulations as jQuery does, a proper way to modify attributes of one element will be using directive. Through link function of a directive, you have access to both element and its attributes.

Wrapping you whole input inside one directive, you can still introduce ng-model's methods through controller property.

This method will help to decouple the logic of ngmodel with placeholder from controller. If there is no logic between them, you can definitely go as Wagner Francisco said.

What is the best workaround for the WCF client `using` block issue?

I have written a simple base class that handles this. It's available as a NuGet package and it's quite easy to use.

//MemberServiceClient is the class generated by SvcUtil
public class MemberServiceManager : ServiceClientBase<MemberServiceClient>
{
    public User GetUser(int userId)
    {
        return PerformServiceOperation(client => client.GetUser(userId));
    }

    //you can also check if any error occured if you can't throw exceptions       
    public bool TryGetUser(int userId, out User user)
    {
        return TryPerformServiceOperation(c => c.GetUser(userId), out user);
    }
}

How to import a .cer certificate into a java keystore?

You shouldn't have to make any changes to the certificate. Are you sure you are running the right import command?

The following works for me:

keytool -import -alias joe -file mycert.cer -keystore mycerts -storepass changeit

where mycert.cer contains:

Environ Function code samples for VBA

As alluded to by Eric, you can use environ with ComputerName argument like so:

MsgBox Environ("USERNAME")

Some additional information that might be helpful for you to know:

The arguments are not case sensitive.
There is a slightly faster performing string version of the Environ function. To invoke it, use a dollar sign. (Ex: Environ$("username")) This will net you a small performance gain.
You can retrieve all System Environment Variables using this function. (Not just username.) A common use is to get the "ComputerName" value to see which computer the user is logging onto from.
I don't recommend it for most situations, but it can be occasionally useful to know that you can also access the variables with an index. If you use this syntax the the name of argument and the value are returned. In this way you can enumerate all available variables. Valid values are 1 - 255.

    Sub EnumSEVars()
        Dim strVar As String
        Dim i As Long
        For i = 1 To 255
            strVar = Environ$(i)
            If LenB(strVar) = 0& Then Exit For
            Debug.Print strVar
        Next
    End Sub

Xcode Project vs. Xcode Workspace - Differences

I think there are three key items you need to understand regarding project structure: Targets, projects, and workspaces. Targets specify in detail how a product/binary (i.e., an application or library) is built. They include build settings, such as compiler and linker flags, and they define which files (source code and resources) actually belong to a product. When you build/run, you always select one specific target.

It is likely that you have a few targets that share code and resources. These different targets can be slightly different versions of an app (iPad/iPhone, different brandings,…) or test cases that naturally need to access the same source files as the app. All these related targets can be grouped in a project. While the project contains the files from all its targets, each target picks its own subset of relevant files. The same goes for build settings: You can define default project-wide settings in the project, but if one of your targets needs different settings, you can always override them there:

Shared project settings that all targets inherit, unless they overwrite it

Shared project settings that all targets inherit, unless they override it

Concrete target settings: PSE iPhone overwrites the project’s Base SDK setting

Concrete target settings: PSE iPhone overrides the project’s Base SDK setting

In Xcode, you always open projects (or workspaces, but not targets), and all the targets it contains can be built/run, but there’s no way/definition of building a project, so every project needs at least one target in order to be more than just a collection of files and settings.

Select one of the project’s targets to run

In a lot of cases, projects are all you need. If you have a dependency that you build from source, you can embed it as a subproject. Subprojects can be opened separately or within their super project.

demoLib is a subprojec

demoLib is a subproject

If you add one of the subproject’s targets to the super project’s dependencies, the subproject will be automatically built unless it has remained unchanged. The advantage here is that you can edit files from both your project and your dependencies in the same Xcode window, and when you build/run, you can select from the project’s and its subprojects’ targets:

Running targets from a subproject

If, however, your library (the subproject) is used by a variety of other projects (or their targets, to be precise), it makes sense to put it on the same hierarchy level – that’s what workspaces are for. Workspaces contain and manage projects, and all the projects it includes directly (i.e., not their subprojects) are on the same level and their targets can depend on each other (projects’ targets can depend on subprojects’ targets, but not vice versa).

Workspace structure

In this example, both apps (AnotherApplication / ProjectStructureExample) can reference the demoLib project’s targets. This would also be possible by including the demoLib project in both other projects as a subproject (which is a reference only, so no duplication necessary), but if you have lots of cross-dependencies, workspaces make more sense. If you open a workspace, you can choose from all projects’ targets when building/running.

Running targets from a workspace

You can still open your project files separately, but it is likely their targets won’t build because Xcode cannot resolve the dependencies unless you open the workspace file. Workspaces give you the same benefit as subprojects: Once a dependency changes, Xcode will rebuild it to make sure it’s up-to-date (although I have had some issues with that, it doesn’t seem to work reliably).

Your questions in a nutshell:

1) Projects contain files (code/resouces), settings, and targets that build products from those files and settings. Workspaces contain projects which can reference each other.

2) Both are responsible for structuring your overall project, but on different levels.

3) I think projects are sufficient in most cases. Don’t use workspaces unless there’s a specific reason. Plus, you can always embed your project in a workspace later.

4) I think that’s what the above text is for…

There’s one remark for 3): CocoaPods, which automatically handles 3rd party libraries for you, uses workspaces. Therefore, you have to use them, too, when you use CocoaPods (which a lot of people do).

ScrollIntoView() causing the whole page to move

i had the same problem, i fixed it by removing the transform:translateY CSS i placed on the footer of the page.

How to export SQL Server database to MySQL?

It looks like you correct: The Migration Toolkit is due to be integrated with MySQL Workbench - but I do not think this has been completed yet. See the End-of-life announcement for MySQL GUI Tools (which included the Migration Toolkit):

http://www.mysql.com/support/eol-notice.html

MySQL maintain archives of the MySQL GUI Tools packages:

http://dev.mysql.com/downloads/gui-tools/5.0.html

Make iframe automatically adjust height according to the contents without using scrollbar?

This option will work 100%

<iframe id='iframe2' src="url.com" frameborder="0" style="overflow: hidden; height: 100%; width: 100%; position: absolute;" height="100%" width="100%"></iframe>

Node.js/Express routing with get params

For Query parameters like domain.com/test?format=json&type=mini format, then you can easily receive it via - req.query.

app.get('/test', function(req, res){
  var format = req.query.format,
      type = req.query.type;
});

Convert data file to blob

async function FileToString (file) {
    try {
        let res = await file.raw.text();
        console.log(res);
    } catch (err) {
        throw err;
    }
}

Can we instantiate an abstract class?

About Abstract Classes

Cannot create object of an abstract class
Can create variables (can behave like datatypes)
If a child can not override at least of one abstract method of the parent, then child also becomes abstract
Abstract classes are useless without child classes

The purpose of an abstract class is to behave like a base. In inheritance hierarchy you will see abstract classes towards the top.

How do I get length of list of lists in Java?

Java 8

import java.util.Arrays;
import java.util.List;
import java.util.ArrayList;

public class HelloWorld{

     public static void main(String []args){
            List<List<String>> stringListList = new ArrayList<>();
            stringListList.add(Arrays.asList(new String[] {"(0,0)", "(0,1)"} ));
            stringListList.add(Arrays.asList(new String[] {"(1,0)", "(1,1)", "(1,2)"} ));
            stringListList.add(Arrays.asList(new String[] {"(2,0)", "(2,1)"} ));

            int count=stringListList.stream().mapToInt(i -> i.size()).sum();

            System.out.println("stringListList count: "+count);
     }
}

Using str_replace so that it only acts on the first match?

Unfortunately, I don't know of any PHP function which can do this.
You can roll your own fairly easily like this:

function replace_first($find, $replace, $subject) {
    // stolen from the comments at PHP.net/str_replace
    // Splits $subject into an array of 2 items by $find,
    // and then joins the array with $replace
    return implode($replace, explode($find, $subject, 2));
}

Defining array with multiple types in TypeScript

Defining array with multiple types in TypeScript

Use a union type (string|number)[] demo:

const foo: (string|number)[] = [ 1, "message" ];

I have an array of the form: [ 1, "message" ].

If you are sure that there are always only two elements [number, string] then you can declare it as a tuple:

const foo: [number, string] = [ 1, "message" ];

Default SQL Server Port

The default port for SQL Server Database Engine is 1433.

And as a best practice it should always be changed after the installation. 1433 is widely known which makes it vulnerable to attacks.

Is there a pure CSS way to make an input transparent?

If you want to remove the outline when focused as well try:

input[type="text"],
input[type="text"]:focus   
{
         background: transparent;
         border: none;
         outline-width: 0;
}

Min/Max-value validators in asp.net mvc

I don't think min/max validations attribute exist. I would use something like

[Range(1, Int32.MaxValue)]

for minimum value 1 and

[Range(Int32.MinValue, 10)]

for maximum value 10

Can you append strings to variables in PHP?

PHP syntax is little different in case of concatenation from JavaScript. Instead of (+) plus a (.) period is used for string concatenation.

<?php

$selectBox = '<select name="number">';
for ($i=1;$i<=100;$i++)
{
    $selectBox += '<option value="' . $i . '">' . $i . '</option>'; // <-- (Wrong) Replace + with .
    $selectBox .= '<option value="' . $i . '">' . $i . '</option>'; // <-- (Correct) Here + is replaced .
}
$selectBox += '</select>'; // <-- (Wrong) Replace + with .
$selectBox .= '</select>'; // <-- (Correct) Here + is replaced .
echo $selectBox;

?>

window.open with target "_blank" in Chrome

You can't do it because you can't have control on the manner Chrome opens its windows

Where to place JavaScript in an HTML file?

Putting the javascript at the top would seem neater, but functionally, its better to go after the HTML. That way, your javascript won't run and try to reference HTML elements before they are loaded. This sort of problem often only becomes apparent when you load the page over an actual internet connection, especially a slow one.

You could also try to dynamically load the javascript by adding a header element from other javascript code, although that only makes sense if you aren't using all of the code all the time.

Left Join With Where Clause

If I understand your question correctly you want records from the settings database if they don't have a join accross to the character_settings table or if that joined record has character_id = 1.

You should therefore do

SELECT `settings`.*, `character_settings`.`value`
FROM (`settings`)
LEFT OUTER JOIN `character_settings` 
ON `character_settings`.`setting_id` = `settings`.`id`
WHERE `character_settings`.`character_id` = '1' OR
`character_settings`.character_id is NULL

Check if a file exists or not in Windows PowerShell?

The standard way to see if a file exists is with the Test-Path cmdlet.

Test-Path -path $filename

Is there a way to provide named parameters in a function call in JavaScript?

No - the object approach is JavaScript's answer to this. There is no problem with this provided your function expects an object rather than separate params.

ProgressDialog in AsyncTask

/**
 * this class performs all the work, shows dialog before the work and dismiss it after
 */
public class ProgressTask extends AsyncTask<String, Void, Boolean> {

    public ProgressTask(ListActivity activity) {
        this.activity = activity;
        dialog = new ProgressDialog(activity);
    }

    /** progress dialog to show user that the backup is processing. */
    private ProgressDialog dialog;
    /** application context. */
    private ListActivity activity;

    protected void onPreExecute() {
        this.dialog.setMessage("Progress start");
        this.dialog.show();
    }

        @Override
    protected void onPostExecute(final Boolean success) {
        if (dialog.isShowing()) {
            dialog.dismiss();
        }


        MessageListAdapter adapter = new MessageListAdapter(activity, titles);
        setListAdapter(adapter);
        adapter.notifyDataSetChanged();


        if (success) {
            Toast.makeText(context, "OK", Toast.LENGTH_LONG).show();
        } else {
            Toast.makeText(context, "Error", Toast.LENGTH_LONG).show();
        }
    }

    protected Boolean doInBackground(final String... args) {
       try{    
          BaseFeedParser parser = new BaseFeedParser();
          messages = parser.parse();
          List<Message> titles = new ArrayList<Message>(messages.size());
          for (Message msg : messages){
              titles.add(msg);
          }
          activity.setMessages(titles);
          return true;
       } catch (Exception e)
          Log.e("tag", "error", e);
          return false;
       }
    }
}

public class Soirees extends ListActivity {
    private List<Message> messages;
    private TextView tvSorties;
    private MyProgressDialog dialog;
    @Override
    public void onCreate(Bundle icicle) {

        super.onCreate(icicle);

        setContentView(R.layout.sorties);

        tvSorties=(TextView)findViewById(R.id.TVTitle);
        tvSorties.setText("Programme des soirées");

        // just call here the task
        AsyncTask task = new ProgressTask(this).execute();
   }

   public void setMessages(List<Message> msgs) {
      messages = msgs;
   }

}

Loading custom configuration files

the articles posted by Ricky are very good, but unfortunately they don't answer your question.

To solve your problem you should try this piece of code:

ExeConfigurationFileMap configMap = new ExeConfigurationFileMap();
configMap.ExeConfigFilename = @"d:\test\justAConfigFile.config.whateverYouLikeExtension";
Configuration config = ConfigurationManager.OpenMappedExeConfiguration(configMap, ConfigurationUserLevel.None);

If need to access a value within the config you can use the index operator:

config.AppSettings.Settings["test"].Value;

How to remove text before | character in notepad++

Please use regex to remove anything before |

example

dsfdf | fdfsfsf
dsdss|gfghhghg
dsdsds |dfdsfsds

Use find and replace in notepad++

find: .+(\|) replace: \1

output

| fdfsfsf
|gfghhghg
|dfdsfsds

Get output parameter value in ADO.NET

public static class SqlParameterExtensions
{
    public static T GetValueOrDefault<T>(this SqlParameter sqlParameter)
    {
        if (sqlParameter.Value == DBNull.Value 
            || sqlParameter.Value == null)
        {
            if (typeof(T).IsValueType)
                return (T)Activator.CreateInstance(typeof(T));

            return (default(T));
        }

        return (T)sqlParameter.Value;
    }
}


// Usage
using (SqlConnection conn = new SqlConnection(connectionString))
using (SqlCommand cmd = new SqlCommand("storedProcedure", conn))
{
   SqlParameter outputIdParam = new SqlParameter("@ID", SqlDbType.Int)
   { 
      Direction = ParameterDirection.Output 
   };

   cmd.CommandType = CommandType.StoredProcedure;
   cmd.Parameters.Add(outputIdParam);

   conn.Open();
   cmd.ExecuteNonQuery();

   int result = outputIdParam.GetValueOrDefault<int>();
}

How do you write a migration to rename an ActiveRecord model and its table in Rails?

Here's an example:

class RenameOldTableToNewTable < ActiveRecord::Migration
  def self.up
    rename_table :old_table_name, :new_table_name
  end

  def self.down
    rename_table :new_table_name, :old_table_name
  end
end

I had to go and rename the model declaration file manually.

Edit:

In Rails 3.1 & 4, ActiveRecord::Migration::CommandRecorder knows how to reverse rename_table migrations, so you can do this:

class RenameOldTableToNewTable < ActiveRecord::Migration
  def change
    rename_table :old_table_name, :new_table_name
  end 
end

(You still have to go through and manually rename your files.)

RegEx for Javascript to allow only alphanumeric

Question is old, but it's never too late to answer

$(document).ready(function() {
  //prevent paste
  var usern_paste = document.getElementById('yourid');
  usern_paste.onpaste = e => e.preventDefault();

  //prevent copy
  var usern_drop = document.getElementById('yourid');
  usern_drop.ondrop = e => e.preventDefault();
});

$('#yourid').keypress(function (e) {
  var regex = new RegExp("^[a-zA-Z0-9\s]");
  var str = String.fromCharCode(!e.charCode ? e.which : e.charCode);
  if (regex.test(str)) {
      return true;
  }
  e.preventDefault();
  return false;
});

Xcode 12, building for iOS Simulator, but linking in object file built for iOS, for architecture arm64

I found that

Using Rosetta (Find Xcode in Finder > Get Info > Open using Rosetta)
Build Active Architecture Only set to YES for everything, in both Project and Target
And including this in the podfile:

post_install do |installer|
  installer.pods_project.targets.each do |target|
    target.build_configurations.each do |config|
      config.build_settings["ONLY_ACTIVE_ARCH"] = "YES"
    end
  end
end

worked for me.

We had both Pods and SPM and they didn't work with any of the combinations of other answers. My colleagues all use Intel MacBooks and we haven't tested this config on their computers, though.

How to disassemble a memory range with GDB?

fopen() is a C library function and so you won't see any syscall instructions in your code, just a regular function call. At some point, it does call open(2), but it does that via a trampoline. There is simply a jump to the VDSO page, which is provided by the kernel to every process. The VDSO then provides code to make the system call. On modern processors, the SYSCALL or SYSENTER instructions will be used, but you can also use INT 80h on x86 processors.

Netbeans - Error: Could not find or load main class

You can :

RightClick on project node and go to Set configuration
Select the main class for your application.
Then clean and build.

Even if the above steps don't work for you then then delete the Netbeans cache by deleting the (index) folder

User\.netbeans\SOME_NUMBER_reflecting_your_version\var\cache\index\

Changing the size of a column referenced by a schema-bound view in SQL Server

See this link

Resize or Modify a MS SQL Server Table Column with Default Constraint using T-SQL Commands

the solution for such a SQL Server problem is going to be

Dropping or disabling the DEFAULT Constraint on the table column.

Modifying the table column data type and/or data size.

Re-creating or enabling the default constraint back on the sql table column.

Bye

Could not load file or assembly Microsoft.SqlServer.management.sdk.sfc version 11.0.0.0

for version 11 download the Microsoft SQL Server 2012 Feature Pack https://www.microsoft.com/en-us/download/confirmation.aspx?id=43339

ENU\x64\SQLSysClrTypes.msi
ENU\x64\SharedManagementObjects.msi

for version 12 download the Microsoft SQL Server 2014 SP2 Feature Pack https://www.microsoft.com/en-us/download/details.aspx?id=42295

ENU\x64\SQLSysClrTypes.msi
ENU\x64\SharedManagementObjects.msi

Is there an equivalent method to C's scanf in Java?

You can format your output in Java as described in below code snippet.

public class TestFormat {

    public static void main(String[] args) {
      long n = 461012;
      System.out.format("%d%n", n);      //  -->  "461012"
      System.out.format("%08d%n", n);    //  -->  "00461012"
      System.out.format("%+8d%n", n);    //  -->  " +461012"
      System.out.format("%,8d%n", n);    // -->  " 461,012"
      System.out.format("%+,8d%n%n", n); //  -->  "+461,012"
   }
}

You can read more here.

Real differences between "java -server" and "java -client"?

One difference I've just noticed is that in "client" mode, it seems the JVM actually gives some unused memory back to the operating system, whereas with "server" mode, once the JVM grabs the memory, it won't give it back. Thats how it appears on Solaris with Java6 anyway (using prstat -Z to see the amount of memory allocated to a process).

Can curl make a connection to any TCP ports, not just HTTP/HTTPS?

Since you're using PHP, you will probably need to use the CURLOPT_PORT option, like so:

curl_setopt($ch, CURLOPT_PORT, 11740);

Bear in mind, you may face problems with SELinux:

Unable to make php curl request with port number

How do I format {{$timestamp}} as MM/DD/YYYY in Postman?

You could use moment.js with Postman to give you that timestamp format.

You can add this to the pre-request script:

const moment = require('moment');
pm.globals.set("today", moment().format("MM/DD/YYYY"));

Then reference {{today}} where ever you need it.

If you add this to the Collection Level Pre-request Script, it will be run for each request in the Collection. Rather than needing to add it to all the requests individually.

For more information about using moment in Postman, I wrote a short blog post: https://dannydainton.com/2018/05/21/hold-on-wait-a-moment/

Why is pydot unable to find GraphViz's executables in Windows 8?

Some things to know about graphviz:

graphviz is not only a python module, it's also a standalone program. I believe you need both to make graphviz to work.
The standalone graphviz program was originally developed by AT&T, open sourced, then abandoned. The current maintainers of the package forgot to include Windows registry entries so Python can find the program executable.
Line 620 of pydotplus\graphviz.py includes a backup path to look for graphviz if it isn't found in the registry. It uses the old ATT file path. Update the file path to what is on your machine (you will need to have administrator privileges) and graphviz should work with pydotplus.

Example:

# Just in case, try the default... path = r"C:\Program Files (x86)\Graphviz2.38\bin"

How to get child element by ID in JavaScript?

If jQuery is okay, you can use find(). It's basically equivalent to the way you are doing it right now.

$('#note').find('#textid');

You can also use jQuery selectors to basically achieve the same thing:

$('#note #textid');

Using these methods to get something that already has an ID is kind of strange, but I'm supplying these assuming it's not really how you plan on using it.

On a side note, you should know ID's should be unique in your webpage. If you plan on having multiple elements with the same "ID" consider using a specific class name.

Update 2020.03.10

It's a breeze to use native JS for this:

document.querySelector('#note #textid');

If you want to first find #note then #textid you have to check the first querySelector result. If it fails to match, chaining is no longer possible :(

var parent = document.querySelector('#note');
var child = parent ? parent.querySelector('#textid') : null;

Is there a library function for Root mean square error (RMSE) in python?

from sklearn import metrics
import bumpy as np
print(no.sqrt(metrics.mean_squared_error(actual,predicted)))

How create Date Object with values in java

SimpleDateFormat sdf = new SimpleDateFormat("MMM dd yyyy HH:mm:ss", Locale.ENGLISH);
//format as u want

try {
    String dateStart = "June 14 2018 16:02:37";
    cal.setTime(sdf.parse(dateStart));
    //all done
} catch (ParseException e) {
    e.printStackTrace();
}

How can I align text directly beneath an image?

This centers the "A" below the image:

<div style="text-align:center">
  <asp:Image ID="Image1" runat="server" ImageUrl="~/Images/opentoselect.gif" />
  <br />
  A
</div>

That is ASP.Net and it would render the HTML as:

<div style="text-align:center">
<img id="Image1" src="Images/opentoselect.gif" style="border-width:0px;" />
<br />
A
</div>

How to write a test which expects an Error to be thrown in Jasmine?

I know that is more code but you can also do:

try
   do something
   @fail Error("should send a Exception")
 catch e
   expect(e.name).toBe "BLA_ERROR"
   expect(e.message).toBe 'Message'

How to sum data.frame column values?

to order after the colsum :

order(colSums(people),decreasing=TRUE)

if more than 20+ columns

order(colSums(people[,c(5:25)],decreasing=TRUE) ##in case of keeping the first 4 columns remaining.

Aligning a button to the center

For me it worked using flexbox, which is in my opinion the cleanest solution.

Add a css class around the parent div / element with :

.parent {
display: flex;
}

and for the button use:

.button {
justify-content: center;
}

You should use a parent div, otherwise the button doesn't 'know' what the middle of the page / element is.

If this is not working, try :

#wrapper {
    display:flex;
    justify-content: center;
}

Why ModelState.IsValid always return false in mvc

"ModelState.IsValid" tells you that the model is consumed by the view (i.e. PaymentAdviceEntity) is satisfy all types of validation or not specified in the model properties by DataAnotation.

In this code the view does not bind any model properties. So if you put any DataAnotations or validation in model (i.e. PaymentAdviceEntity). then the validations are not satisfy. say if any properties in model is Name which makes required in model.Then the value of the property remains blank after post.So the model is not valid (i.e. ModelState.IsValid returns false). You need to remove the model level validations.

Official way to ask jQuery wait for all images to load before executing something

Use imagesLoaded PACKAGED v3.1.8 (6.8 Kb when minimized). It is relatively old (since 2010) but still active project.

You can find it on github: https://github.com/desandro/imagesloaded

Their official site: http://imagesloaded.desandro.com/

Why it is better than using:

$(window).load()

Because you may want to load images dynamically, like this: jsfiddle

$('#button').click(function(){
    $('#image').attr('src', '...');
});

java.security.AccessControlException: Access denied (java.io.FilePermission

Just document it here on Windows you need to escape the \ character:

"e:\\directory\\-"

RESTful URL design for search

My advice would be this:

/garages
  Returns list of garages (think JSON array here)
/garages/yyy
  Returns specific garage
/garage/yyy/cars
  Returns list of cars in garage
/garages/cars
  Returns list of all cars in all garages (may not be practical of course)
/cars
  Returns list of all cars
/cars/xxx
  Returns specific car
/cars/colors
  Returns lists of all posible colors for cars
/cars/colors/red,blue,green
  Returns list of cars of the specific colors (yes commas are allowed :) )

Edit:

/cars/colors/red,blue,green/doors/2
  Returns list of all red,blue, and green cars with 2 doors.
/cars/type/hatchback,coupe/colors/red,blue,green/
  Same idea as the above but a lil more intuitive.
/cars/colors/red,blue,green/doors/two-door,four-door
  All cars that are red, blue, green and have either two or four doors.

Hopefully that gives you the idea. Essentially your Rest API should be easily discoverable and should enable you to browse through your data. Another advantage with using URLs and not query strings is that you are able to take advantage of the native caching mechanisms that exist on the web server for HTTP traffic.

Here's a link to a page describing the evils of query strings in REST: http://web.archive.org/web/20070815111413/http://rest.blueoxen.net/cgi-bin/wiki.pl?QueryStringsConsideredHarmful

I used Google's cache because the normal page wasn't working for me here's that link as well: http://rest.blueoxen.net/cgi-bin/wiki.pl?QueryStringsConsideredHarmful

Is it possible to add dynamically named properties to JavaScript object?

I was looking for a solution where I can use dynamic key-names inside the object declaration (without using ES6 features like ... or [key]: value)

Here's what I came up with:

var obj = (obj = {}, obj[field] = 123, obj)

It looks a little bit complex at first, but it's really simple. We use the Comma Operator to run three commands in a row:

obj = {}: creates a new object and assigns it to the variable obj
obj[field] = 123: adds a computed property name to obj
obj: use the obj variable as the result of the parentheses/comma list

This syntax can be used inside a function parameter without the requirement to explictely declare the obj variable:

_x000D_

// The test function to see the result.
function showObject(obj) {
    console.log(obj);
}

// My dynamic field name.
var field = "myDynamicField";

// Call the function with our dynamic object.
showObject( (obj = {}, obj[field] = 123, obj) );

/*
Output:

{
  "myDynamicField": true
}
*/

_x000D_

Some variations

"strict mode" workaround:

The above code does not work in strict mode because the variable "obj" is not declared.

// This gives the same result, but declares the global variable `this.obj`!
showObject( (this.obj = {}, obj[field] = 123, obj) );

ES2015 code using computed property names in initializer:

// Works in most browsers, same result as the other functions.
showObject( {[field] = 123} );

This solution works in all modern browsers (but not in IE, if I need to mention that)

Super hacky way using `JSON.parse()`:

// Create a JSON string that is parsed instantly. Not recommended in most cases.
showObject( JSON.parse( '{"' + field +'":123}') );
// read: showObject( JSON.parse( '{"myDynamicfield":123}') );

Allows special characters in keys

Note that you can also use spaces and other special characters inside computed property names (and also in JSON.parse).

var field = 'my dynamic field :)';
showObject( {[field] = 123} );
// result: { "my dynamic field :)": 123 }

Those fields cannot be accessed using a dot (obj.my dynamic field :) is obviously syntactically invalid), but only via the bracket-notation, i.e., obj['my dynamic field :)'] returns 123

When I catch an exception, how do I get the type, file, and line number?

Simplest form that worked for me.

import traceback

try:
    print(4/0)
except ZeroDivisionError:
    print(traceback.format_exc())

Output

Traceback (most recent call last):
  File "/path/to/file.py", line 51, in <module>
    print(4/0)
ZeroDivisionError: division by zero

Process finished with exit code 0

Regular expression to check if password is "8 characters including 1 uppercase letter, 1 special character, alphanumeric characters"

If you need only one upper case and special character then this should work:

@"^(?=.{8,}$)(?=[^A-Z]*[A-Z][^A-Z]*$)\w*\W\w*$"

Exception : mockito wanted but not invoked, Actually there were zero interactions with this mock

Your class MyClass creates a new MyClassToBeTested, instead of using your mock. My article on the Mockito wiki describes two ways of dealing with this.

Disabling tab focus on form elements

Similar to Yipio, I added notab="notab" as an attribute to any element I wanted to disable the tab too. My jQuery is then one line.

$('input[notab=notab]').on('keydown', function(e){ if (e.keyCode == 9)  e.preventDefault() });

Btw, keypress doesn't work for many control keys.

Programs & Examples On #Hammingweight

How to count the number of set bits in a 32-bit integer?

Default session timeout for Apache Tomcat applications

Alternate table row color using CSS?

Changing default startup directory for command prompt in Windows 7

Leading zeros for Int in Swift

How can I open a website in my web browser using Python?

Titlecase all entries into a form_for text field

getting the last item in a javascript object

Getting time elapsed in Objective-C

Unable to launch the IIS Express Web server, Failed to register URL, Access is denied

What is the Gradle artifact dependency graph command?

ssh: check if a tunnel is alive

Simple dictionary in C++

installing apache: no VCRUNTIME140.dll

How to sort 2 dimensional array by column value?

How to easily initialize a list of Tuples?

How can I take an UIImage and give it a black border?

Getting error: ISO C++ forbids declaration of with no type

Practical uses of different data structures

Getting Index of an item in an arraylist;

How can I convert a timestamp from yyyy-MM-ddThh:mm:ss:SSSZ format to MM/dd/yyyy hh:mm:ss.SSS format? From ISO8601 to UTC

Prevent PDF file from downloading and printing

How to increase space between dotted border dots

Read MS Exchange email in C#

linux/videodev.h : no such file or directory - OpenCV on ubuntu 11.04

Matplotlib subplots_adjust hspace so titles and xlabels don't overlap?

How do I set up the database.yml file in Rails?

Adding Image to xCode by dragging it from File

Adding content to a linear layout dynamically?

Bootstrap dropdown not working

Initialising mock objects - MockIto

Referencing a string in a string array resource with xml

How to define object in array in Mongoose schema correctly with 2d geo index

How to check task status in Celery?

Pass request headers in a jQuery AJAX GET call

How can I show line numbers in Eclipse?

Convert a number range to another range, maintaining ratio

How to get all elements by class name?

highlight the navigation menu for the current page

How to simulate a button click using code?

Oracle Insert via Select from multiple tables where one table may not have a row

Difference between CLOB and BLOB from DB2 and Oracle Perspective?

Simulating Key Press C#

Google Maps API V3 : How show the direction from a point A to point B (Blue line)?

Display filename before matching line

VBA shorthand for x=x+1?

Redirecting from HTTP to HTTPS with PHP

Error : ORA-01704: string literal too long

How to set variables in HIVE scripts

Can I use a case/switch statement with two variables?

Should I return EXIT_SUCCESS or 0 from main()?

Stacked bar chart

Extract time from date String

How to convert a file to utf-8 in Python?

where does MySQL store database files?

Posting array from form

How to unnest a nested list

How do I reference the input of an HTML <textarea> control in codebehind?

Bootstrap Modal immediately disappearing

A Likely Cause

Debugging Tips

A (Broken) Demo

Plunker

How do you assert that a certain exception is thrown in JUnit 4 tests?

Set up adb on Mac OS X

How to create an array of 20 random bytes?

How to convert all text to lowercase in Vim

$(this).serialize() -- How to add a value?

How to shift a block of code left/right by one space in VSCode?

Oracle query to identify columns having special characters

How to display PDF file in HTML?

Is there a way to reset IIS 7.5 to factory settings?

Using GCC to produce readable assembly?

What does "Error: object '<myvariable>' not found" mean?

Is there a Subversion command to reset the working copy?

To remove untracked files

Two column div layout with fluid left and fixed right column

What are the differences between a clustered and a non-clustered index?

Convert a SQL query result table to an HTML table for email