If mipadi's suggestion doesn't work, add this to config/environment.rb

# force Rails into production mode when                          
# you don't control web/app server and can't set it the proper way                  
ENV['RAILS_ENV'] ||= 'production'

I was trying to create a complex grid of panes and had to deal with switching and splitting panes over and over again. Here are my learnings:

tmux new-session \;

Gets you started with a new session. To split it horizontal or vertical use split-window -h or -v subsequently, like that:

tmux new-session \; split-window -v \; split-window -h \;

Creates 3 panes, like this:

------------
|          |
|----------|
|    |     |
------------

To run commands in that panes, just add them with the send-keys 'my-command' command and C-m which executes it:

tmux new-session \; \
  send-keys 'tail -f /var/log/monitor.log' C-m \; \
  split-window -v \; \
  split-window -h \; \
  send-keys 'top' C-m \; 

And the resulting session should look like that.

------------
|  tail    |
|----------|
|    | top |
------------

Now I tried to again sub-divide the bottom left pane, so switching either back using last-pane, or in more complex windows, with the select-pane -t 1 where 1 is the number of the pane in order created starting with 0.

tmux new-session \; \
  send-keys 'tail -f /var/log/monitor.log' C-m \; \
  split-window -v \; \
  split-window -h \; \
  send-keys 'top' C-m \; \
  select-pane -t 1 \; \
  split-window -v \; \
  send-keys 'weechat' C-m \;

Does that. Basicaly knowing your way around with split-window and select-pane is all you need. It's also handy to pass with -p 75 a percentage size of the pane created by split-window to have more control over the size of the panes.

tmux new-session \; \
  send-keys 'tail -f /var/log/monitor.log' C-m \; \
  split-window -v -p 75 \; \
  split-window -h -p 30 \; \
  send-keys 'top' C-m \; \
  select-pane -t 1 \; \
  split-window -v \; \
  send-keys 'weechat' C-m \;

Which results in a session looking like that

------------------
|      tail      |
|----------------|
|          | top |
|----------|     |
| weechat  |     |
------------------

Hope that helps tmux enthusiasts in the future.

Presumably, those columns are integer columns - which will be the reason as the result of the calculation will be of the same type.

e.g. if you do this:

SELECT 1 / 2

you will get 0, which is obviously not the real answer. So, convert the values to e.g. decimal and do the calculation based on that datatype instead.

e.g.

SELECT CAST(1 AS DECIMAL) / 2

gives 0.500000

Heads up,

JAVASCRIPT

<script>
   function readMtlAtClient(){

       mtlFileContent = '';

       var mtlFile = document.getElementById('mtlFileInput').files[0];
       var readerMTL = new FileReader();

       // Closure to capture the file information.
       readerMTL.onload = (function(reader) {
           return function() {
               mtlFileContent = reader.result;
               mtlFileContent = mtlFileContent.replace('data:;base64,', '');
               mtlFileContent = window.atob(mtlFileContent);

           };
       })(readerMTL);

       readerMTL.readAsDataURL(mtlFile);
   }
</script>

HTML

    <input class="FullWidth" type="file" name="mtlFileInput" value="" id="mtlFileInput" 
onchange="readMtlAtClient()" accept=".mtl"/>

Then mtlFileContent has your text as a decoded string !

It may also happen in the following case:

eg. if we consider the push function of a stack:

typedef struct stack
{
    int a[20];
    int head;
}stack;

void push(stack **s)
{
    int data;
    printf("Enter data:");
    scanf("%d",&(*s->a[++*s->head])); /* this is where the error is*/
}

main()
{
    stack *s;
    s=(stack *)calloc(1,sizeof(stack));
    s->head=-1;
    push(&s);
    return 0;
}

The error is in the push function and in the commented line. The pointer s has to be included within the parentheses. The correct code:

scanf("%d",&( (*s)->a[++(*s)->head]));

Someone posted this link to the MDN in a comment, and I think it was very helpful. It describes things like ErrorTypes very thoroughly.

EvalError --- Creates an instance representing an error that occurs regarding the global function eval().

InternalError --- Creates an instance representing an error that occurs when an internal error in the JavaScript engine is thrown. E.g. "too much recursion".

RangeError --- Creates an instance representing an error that occurs when a numeric variable or parameter is outside of its valid range.

ReferenceError --- Creates an instance representing an error that occurs when de-referencing an invalid reference.

SyntaxError --- Creates an instance representing a syntax error that occurs while parsing code in eval().

TypeError --- Creates an instance representing an error that occurs when a variable or parameter is not of a valid type.

URIError --- Creates an instance representing an error that occurs when encodeURI() or decodeURI() are passed invalid parameters.

If you want to play the *.mp3 or *.wav file, i think the easiest way would be to use SFML.

Best File Upload Using Jquery Ajax With Materialise Click Here to Download

When you select image the image will be Converted in base 64 and you can store this in to database so it will be light weight also.

You can create a defaultdict

from collections import defaultdict
d1 = defaultdict(int)      # defaults to 0 values for keys
unq = set(lst1)              # lst1 = [1, 2, 2, 3, 4, 1, 2, 7]
for each in unq:
      d1[each] = lst1.count(each)
else:
      print(d1)

file contain unicode-esaped string

\"message\": \"\\u0410\\u0432\\u0442\\u043e\\u0437\\u0430\\u0446\\u0438\\u044f .....\",

for me

 f = open("56ad62-json.log", encoding="utf-8")
 qq=f.readline() 

 print(qq)                          
 {"log":\"message\": \"\\u0410\\u0432\\u0442\\u043e\\u0440\\u0438\\u0437\\u0430\\u0446\\u0438\\u044f \\u043f\\u043e\\u043b\\u044c\\u0437\\u043e\\u0432\\u0430\\u0442\\u0435\\u043b\\u044f\"}

(qq.encode().decode("unicode-escape").encode().decode("unicode-escape")) 
# '{"log":"message": "??????????? ????????????"}\n'

I have done it in the following way and it has worked perfectly for me.

First declared a global variable in the header.php, assigning the ID of the post or page before it changes, since the LOOP assigns it the ID of the last entry shown:

$GLOBALS['pageid] = $wp_query->get_queried_object_id();

And to use anywhere in the template, example in the footer.php:

echo $GLOBALS['pageid];

With the accepted answer, January 1st would be displayed like this: 2017/1/1.

If you prefer 2017/01/01, you can use:

var dt = new Date();
var date = dt.getFullYear() + '/' + (((dt.getMonth() + 1) < 10) ? '0' : '') + (dt.getMonth() + 1) + '/' + ((dt.getDate() < 10) ? '0' : '') + dt.getDate();

As of November 17, 2015. This rule has officially changed. Instagram has deprecated the rule against using their API to upload images.

Good luck.

This worked for me. Repeatedly calls a function updating the graph every time.

import matplotlib.pyplot as plt
import matplotlib.animation as anim

def plot_cont(fun, xmax):
    y = []
    fig = plt.figure()
    ax = fig.add_subplot(1,1,1)

    def update(i):
        yi = fun()
        y.append(yi)
        x = range(len(y))
        ax.clear()
        ax.plot(x, y)
        print i, ': ', yi

    a = anim.FuncAnimation(fig, update, frames=xmax, repeat=False)
    plt.show()

"fun" is a function that returns an integer. FuncAnimation will repeatedly call "update", it will do that "xmax" times.

I faced same problem when I updated the Java version to 12.x. I was executing my project through Eclipse IDE. I am not sure whether this error is caused by compatibility issues.

However, I removed 12.x from my system and installed 8.x and my project started working fine.

Buttons don't directly support images. Moreover the way you're doing is for links ()

Images are added over buttons using the BACKGROUND-IMAGE property in style

you can also specify the repeats and other properties using tag

For example: a basic image added to a button would have this code:

    <button style="background-image:url(myImage.png)">

Peace

ddd-cqrs-sample is also a good resource. Written with Java, Spring and JPA.

Updated link: https://github.com/BottegaIT/ddd-leaven-v2

This is an example using the Expr() Class - I needed this too some days ago and it took me some time to find out what is the exact syntax and way of usage:

/**
 * fetches Products that are more expansive than the given price
 * 
 * @param int $price
 * @return array
 */
public function findProductsExpensiveThan($price)
{
  $em = $this->getEntityManager();
  $qb = $em->createQueryBuilder();

  $q  = $qb->select(array('p'))
           ->from('YourProductBundle:Product', 'p')
           ->where(
             $qb->expr()->gt('p.price', $price)
           )
           ->orderBy('p.price', 'DESC')
           ->getQuery();

  return $q->getResult();
}

retainAll() method use for finding common element..i.e;intersection list1.retainAll(list2)

For the total uploaded there doesn't seem to be a way to handle that, but there's something similar to what you want for download. Once readyState is 3, you can periodically query responseText to get all the content downloaded so far as a String (this doesn't work in IE), up until all of it is available at which point it will transition to readyState 4. The total bytes downloaded at any given time will be equal to the total bytes in the string stored in responseText.

For a all or nothing approach to the upload question, since you have to pass a string for upload (and it's possible to determine the total bytes of that) the total bytes sent for readyState 0 and 1 will be 0, and the total for readyState 2 will be the total bytes in the string you passed in. The total bytes both sent and received in readyState 3 and 4 will be the sum of the bytes in the original string plus the total bytes in responseText.

Try

sc query state= all 

for a list of services and whether they are running or not.

Well..according to this php bug report , you can even get 0wned.

<?php 
    $pass = isset($_GET['pass']) ? $_GET['pass'] : '';
    // Query /?pass[]= will authorize user
    //strcmp and strcasecmp both are prone to this hack
    if ( strcasecmp( $pass, '123456' ) == 0 ){
      echo 'You successfully logged in.';
    }
 ?>

It gives you a warning , but still bypass the comparison.
You should be doing === as @postfuturist suggested.

I could get away with the following solution (works with Ubuntu 14 guest VM on Windows 7 host or Ubuntu 9.10 Casper guest VM on host Windows XP x86):

1. Go to network connections -> Virtual Box Host-Only Network -> Select "Properties"
2. Check VirtualBox Bridged Networking Driver
3. Come to VirtualBox Manager, choose the network adapter as Bridged Adapter and Name to the device in Step #1.
4. Restart the VM.

Adding to kennytm's answer. When you do a shallow copy parent.copy() a new dictionary is created with same keys,but the values are not copied they are referenced.If you add a new value to parent_copy it won't effect parent because parent_copy is a new dictionary not reference.

parent = {1: [1,2,3]}
parent_copy = parent.copy()
parent_reference = parent

print id(parent),id(parent_copy),id(parent_reference)
#140690938288400 140690938290536 140690938288400

print id(parent[1]),id(parent_copy[1]),id(parent_reference[1])
#140690938137128 140690938137128 140690938137128

parent_copy[1].append(4)
parent_copy[2] = ['new']

print parent, parent_copy, parent_reference
#{1: [1, 2, 3, 4]} {1: [1, 2, 3, 4], 2: ['new']} {1: [1, 2, 3, 4]}

The hash(id) value of parent[1], parent_copy[1] are identical which implies [1,2,3] of parent[1] and parent_copy[1] stored at id 140690938288400.

But hash of parent and parent_copy are different which implies They are different dictionaries and parent_copy is a new dictionary having values reference to values of parent

datepicker in Finnish (Käännös suomeksi)

$.datepicker.regional['fi'] = {
  closeText: "Valmis", // Display text for close link
  prevText: "Edel", // Display text for previous month link
  nextText: "Seur", // Display text for next month link
  currentText: "Tänään", // Display text for current month link
  monthNames: [ "Tammikuu","Helmikuu","Maaliskuu","Huhtikuu","Toukokuu","Kesäkuu",
  "Heinäkuu","Elokuu","Syyskuu","Lokakuu","Marraskuu","Joulukuu" ], // Names of months for drop-down and formatting
  monthNamesShort: [ "Tam", "Hel", "Maa", "Huh", "Tou", "Kes", "Hei", "Elo", "Syy", "Lok", "Mar", "Jou" ], // For formatting
  dayNames: [ "Sunnuntai", "Maanantai", "Tiistai", "Keskiviikko", "Torstai", "Perjantai", "Lauantai" ], // For formatting
  dayNamesShort: [ "Sun", "Maa", "Tii", "Kes", "Tor", "Per", "Lau" ], // For formatting
  dayNamesMin: [ "Su","Ma","Ti","Ke","To","Pe","La" ], // Column headings for days starting at Sunday
  weekHeader: "Vk", // Column header for week of the year
  dateFormat: "mm/dd/yy", // See format options on parseDate
  firstDay: 0, // The first day of the week, Sun = 0, Mon = 1, ...
  isRTL: false, // True if right-to-left language, false if left-to-right
  showMonthAfterYear: false, // True if the year select precedes month, false for month then year
  yearSuffix: "" // Additional text to append to the year in the month headers
  };

Make sure you restart your computer after you install the Build Tools.

This was what was causing the error for me.

StatTransfer is a program that moves data easily between Stata, Excel (or csv), SAS, etc. It is very user friendly (requires no programming skills). See www.stattransfer.com

If you use the program just note that you will have to choose "ASCII/Text - Delimited" to work with .csv files rather than .xls

Create a one xml file in drawable folder

<stroke
    android:width="2dp"
    android:color="#B40404" />

<padding
    android:bottom="5dp"
    android:left="5dp"
    android:right="5dp"
    android:top="5dp" />

<corners android:radius="4dp" />

Now call this xml to your small layout background

android:background="@drawable/yourxml"

I would opt for a more functional approach. Since ES6 we have been given such nice tools to solve our problems, so why not use them. Let's begin with giving the checkboxes a class so we can round them up very nicely. I prefer to use a class instead of input[type="checkbox"] because now the solution is more generic and can be used also when you have more groups of checkboxes in your document.

HTML

    <input type="checkbox" class="checkbox" value=ck1 /> ck1<br />
    <input type="checkbox" class="checkbox" value=ck2 /> ck2<br />

JavaScript

function atLeastOneCheckboxIsChecked(){
    const checkboxes = Array.from(document.querySelectorAll(".checkbox"));
    return checkboxes.reduce((acc, curr) => acc || curr.checked, false);
}

When called, the function will return false if no checkbox has been checked and true if one or both is.

It works as follows, the reducer function has two arguments, the accumulator (acc) and the current value (curr). For every iteration over the array, the reducer will return true if either the accumulator or the current value is true. the return value of the previous iteration is the accumulator of the current iteration, therefore, if it ever is true, it will stay true until the end.

• Pro base64: the encoded representation you handle is a pretty safe string. It contains neither control chars nor quotes. The latter point helps against SQL injection attempts. I wouldn't expect any problem to just add the value to a "hand coded" SQL query string.

• Pro BLOB: the database manager software knows what type of data it has to expect. It can optimize for that. If you'd store base64 in a TEXT field it might try to build some index or other data structure for it, which would be really nice and useful for "real" text data but pointless and a waste of time and space for image data. And it is the smaller, as in number of bytes, representation.

Try,

  string[] files =  new DirectoryInfo(dir).GetFiles().Select(o => o.Name).ToArray();

Above line may throw UnauthorizedAccessException. To handle this check out below link

C# Handle System.UnauthorizedAccessException in LINQ

Add a common class to all the div. For example add foo to all the divs.

$('.foo').each(function () {
   $(this).dialog({
    autoOpen: false,
    show: {
      effect: "blind",
      duration: 1000
    },
    hide: {
      effect: "explode",
      duration: 1000
    }
  });
});

Swift 3/4/5 Solution

Select Row

let indexPath = IndexPath(row: 0, section: 0)
tblView.selectRow(at: indexPath, animated: true, scrollPosition: .bottom)
myTableView.delegate?.tableView!(myTableView, didSelectRowAt: indexPath)

DeSelect Row

let deselectIndexPath = IndexPath(row: 7, section: 0)
tblView.deselectRow(at: deselectIndexPath, animated: true)
tblView.delegate?.tableView!(tblView, didDeselectRowAt: indexPath)

Have created a simple dictionary in JS here:

function JSdict() {
    this.Keys = [];
    this.Values = [];
}

// Check if dictionary extensions aren't implemented yet.
// Returns value of a key
if (!JSdict.prototype.getVal) {
    JSdict.prototype.getVal = function (key) {
        if (key == null) {
            return "Key cannot be null";
        }
        for (var i = 0; i < this.Keys.length; i++) {
            if (this.Keys[i] == key) {
                return this.Values[i];
            }
        }
        return "Key not found!";
    }
}


// Check if dictionary extensions aren't implemented yet.
// Updates value of a key
if (!JSdict.prototype.update) {
    JSdict.prototype.update = function (key, val) {
        if (key == null || val == null) {
            return "Key or Value cannot be null";
        }
        // Verify dict integrity before each operation
        if (keysLength != valsLength) {
            return "Dictionary inconsistent. Keys length don't match values!";
        }
        var keysLength = this.Keys.length;
        var valsLength = this.Values.length;
        var flag = false;
        for (var i = 0; i < keysLength; i++) {
            if (this.Keys[i] == key) {
                this.Values[i] = val;
                flag = true;
                break;
            }
        }
        if (!flag) {
            return "Key does not exist";
        }
    }
}



// Check if dictionary extensions aren't implemented yet.
// Adds a unique key value pair
if (!JSdict.prototype.add) {
    JSdict.prototype.add = function (key, val) {
        // Allow only strings or numbers as keys
        if (typeof (key) == "number" || typeof (key) == "string") {
            if (key == null || val == null) {
                return "Key or Value cannot be null";
            }
            if (keysLength != valsLength) {
                return "Dictionary inconsistent. Keys length don't match values!";
            }
            var keysLength = this.Keys.length;
            var valsLength = this.Values.length;
            for (var i = 0; i < keysLength; i++) {
                if (this.Keys[i] == key) {
                    return "Duplicate keys not allowed!";
                }
            }
            this.Keys.push(key);
            this.Values.push(val);
        }
        else {
            return "Only number or string can be key!";
        }
    }
}

// Check if dictionary extensions aren't implemented yet.
// Removes a key value pair
if (!JSdict.prototype.remove) {
    JSdict.prototype.remove = function (key) {
        if (key == null) {
            return "Key cannot be null";
        }
        if (keysLength != valsLength) {
            return "Dictionary inconsistent. Keys length don't match values!";
        }
        var keysLength = this.Keys.length;
        var valsLength = this.Values.length;
        var flag = false;
        for (var i = 0; i < keysLength; i++) {
            if (this.Keys[i] == key) {
                this.Keys.shift(key);
                this.Values.shift(this.Values[i]);
                flag = true;
                break;
            }
        }
        if (!flag) {
            return "Key does not exist";
        }
    }
}

The above implementation can now be used to simulate a dictionary as:

var dict = new JSdict();

dict.add(1, "one")

dict.add(1, "one more")
"Duplicate keys not allowed!"

dict.getVal(1)
"one"

dict.update(1, "onne")

dict.getVal(1)
"onne"

dict.remove(1)

dict.getVal(1)
"Key not found!"

This is just a basic simulation. It can be further optimized by implementing a better running time algorithm to work in atleast O(nlogn) time complexity or even less. Like merge/quick sort on arrays and then some B-search for lookups. I Didn't give a try or searched about mapping a hash function in JS.

Also, Key and Value for the JSdict obj can be turned into private variables to be sneaky.

Hope this helps!

EDIT >> After implementing the above, I personally used the JS objects as associative arrays that are available out-of-the-box.

However, I would like to make a special mention about two methods that actually proved helpful to make it a convenient hashtable experience.

Viz: dict.hasOwnProperty(key) and delete dict[key]

Read this post as a good resource on this implementation/usage. Dynamically creating keys in JavaScript associative array

THanks!

Linux users can find the locations of all the installed packages like this:

pip list | xargs -exec pip show

I suggest, probably best way is to set style's width in em unit :) So for input size of 20 characters just set style='width:20em' :)

The accepted answer will not work for duplicates in the collection. If you're set on the foreach, you can just add your own indexing variable(s).

int last = Model.Results.Count - 1;
int index = 0;
foreach (Item result in Model.Results)
{
    //Do Things

    if (index == last)
        //Do Things with the last result

    index++;
}

JetBrains has a new application called the Toolbox App which quickly and easily installs any JetBrains software you want, assuming you have the license. It also manages your login once to apply across all JetBrains software, a very useful feature.

To use it, download the tar.gz file here, then extract it and run the included executable jetbrains-toolbox. Then sign in, and press install next to IntelliJ IDEA:

If you want to move the executable to /usr/bin/ feel free, however it works fine out of the box wherever you extract it to.

This will also make the appropriate desktop entries upon install.

In Angular 8 , ViewChild takes 2 parameters:

Try like this:

@ViewChild('nameInput', { static: false }) nameInputRef: ElementRef;

Explanation:

{ static: false }

If you set static false, the child component ALWAYS gets initialized after the view initialization in time for the ngAfterViewInit/ngAfterContentInit callback functions.

{ static: true}

If you set static true, the child component initialization will take place at the view initialization at ngOnInit

By default you can use { static: false }. If you are creating a dynamic view and want to use the template reference variable, then you should use { static: true}

For more info, you can read this article

Working Demo

In the demo, we will scroll to a div using template reference variable.

 @ViewChild("scrollDiv", { static: true }) scrollTo: ElementRef;

With { static: true }, we can use this.scrollTo.nativeElement in ngOnInit, but with { static: false }, this.scrollTo will be undefined in ngOnInit , so we can access in only in ngAfterViewInit

select * from yourtable where created < now() and created > '2011-04-25 04:00:00'

Sometimes, you need to list the variables of an object and not for debugging purposes. The right way to do it is using get_object_vars($object). It returns an array that has all the class variables and their value. You can then loop through them in a foreach loop. If used within the object itself, simply do get_object_vars($this)

You can use assertException extension to assert more than one exception during one test execution.

Insert method into your TestCase and use:

public function testSomething()
{
    $test = function() {
        // some code that has to throw an exception
    };
    $this->assertException( $test, 'InvalidArgumentException', 100, 'expected message' );
}

I also made a trait for lovers of nice code..

Firstly name isn't a valid attribute of an option element. Instead you could use a data parameter, like this:

<option value="foo" data-name="bar">Foo Bar</option>

The main issue you have is that the JS is looking at the name attribute of the select element, not the chosen option. Try this:

$('#band_type_choices').on('change', function() {         
    $('.checkboxlist').hide();
    $('#checkboxlist_' + $('option:selected', this).data("name")).css("display", "block");
});

Note the option:selected selector within the context of the select which raised the change event.

One of the most important steps is to sanitize any user input before it is processed and/or rendered back to the browser. PHP has some "filter" functions that can be used.

The form that XSS attacks usually have is to insert a link to some off-site javascript that contains malicious intent for the user. Read more about it here.

You'll also want to test your site - I can recommend the Firefox add-on XSS Me.

The way using a Swift Extension to UIImageView (source code here):

Creating Computed Property for Associated UIActivityIndicatorView

import Foundation
import UIKit
import ObjectiveC

private var activityIndicatorAssociationKey: UInt8 = 0

extension UIImageView {
    //Associated Object as Computed Property
    var activityIndicator: UIActivityIndicatorView! {
        get {
            return objc_getAssociatedObject(self, &activityIndicatorAssociationKey) as? UIActivityIndicatorView
        }
        set(newValue) {
            objc_setAssociatedObject(self, &activityIndicatorAssociationKey, newValue, UInt(OBJC_ASSOCIATION_RETAIN))
        }
    }

    private func ensureActivityIndicatorIsAnimating() {
        if (self.activityIndicator == nil) {
            self.activityIndicator = UIActivityIndicatorView(activityIndicatorStyle: UIActivityIndicatorViewStyle.Gray)
            self.activityIndicator.hidesWhenStopped = true
            let size = self.frame.size;
            self.activityIndicator.center = CGPoint(x: size.width/2, y: size.height/2);
            NSOperationQueue.mainQueue().addOperationWithBlock({ () -> Void in
                self.addSubview(self.activityIndicator)
                self.activityIndicator.startAnimating()
            })
        }
    }

Custom Initializer and Setter

    convenience init(URL: NSURL, errorImage: UIImage? = nil) {
        self.init()
        self.setImageFromURL(URL)
    }

    func setImageFromURL(URL: NSURL, errorImage: UIImage? = nil) {
        self.ensureActivityIndicatorIsAnimating()
        let downloadTask = NSURLSession.sharedSession().dataTaskWithURL(URL) {(data, response, error) in
            if (error == nil) {
                NSOperationQueue.mainQueue().addOperationWithBlock({ () -> Void in
                    self.activityIndicator.stopAnimating()
                    self.image = UIImage(data: data)
                })
            }
            else {
                self.image = errorImage
            }
        }
        downloadTask.resume()
    }
}

Try using the Format function:

Private Sub btncalc_Click(ByVal sender As System.Object,
                          ByVal e As System.EventArgs) Handles btncalc.Click
  txtA.Text = Format(Val(txtD.Text) / Val(txtC.Text) * 
                     Val(txtF.Text) / Val(txtE.Text), "0.00")
  txtB.Text = Format(Val(txtA.Text) * 1000 / Val(txtG.Text), "0.00")
End Sub

mysql_ping

That's because endOf mutates the original value.

Relevant quote:

Mutates the original moment by setting it to the end of a unit of time.

Here's an example function that gives you the output you want:

function getMonthDateRange(year, month) {
    var moment = require('moment');

    // month in moment is 0 based, so 9 is actually october, subtract 1 to compensate
    // array is 'year', 'month', 'day', etc
    var startDate = moment([year, month - 1]);

    // Clone the value before .endOf()
    var endDate = moment(startDate).endOf('month');

    // just for demonstration:
    console.log(startDate.toDate());
    console.log(endDate.toDate());

    // make sure to call toDate() for plain JavaScript date type
    return { start: startDate, end: endDate };
}

References:

• endOf()
• clone()
• Date from object

A good way to implement containsAny for sets is using the Guava Sets.intersection().

containsAny would return a boolean, so the call looks like:

Sets.intersection(set1, set2).isEmpty()

This returns true iff the sets are disjoint, otherwise false. The time complexity of this is likely slightly better than retainAll because you dont have to do any cloning to avoid modifying your original set.

I faced this problem, and I solved it by closing visual studio, reopening visual studio, cleaning and rebuilding the solution. This worked for me.

We face this error when we are selecting data from more than one tables by joining tables and at least one of the selected columns (it will also happen when use * to select all columns) exist with same name in more than one tables (our selected/joined tables). In that case we must have to specify from which table we are selecting out column.

Following is a an example solution implementation of concept explained above

I think you have ambiguity only in InvoiceID that exists both in InvoiceLineItems and Invoices Other fields seem distinct. So try This

I just replace InvoiceID with Invoices.InvoiceID

   SELECT 
        VendorName, Invoices.InvoiceID, InvoiceSequence, InvoiceLineItemAmount
    FROM Vendors 
    JOIN Invoices ON (Vendors.VendorID = Invoices.VendorID)
    JOIN InvoiceLineItems ON (Invoices.InvoiceID = InvoiceLineItems.InvoiceID)
    WHERE  
        Invoices.InvoiceID IN
            (SELECT InvoiceSequence 
             FROM InvoiceLineItems
             WHERE InvoiceSequence > 1)
    ORDER BY 
        VendorName, Invoices.InvoiceID, InvoiceSequence, InvoiceLineItemAmount

You can use tablename.columnnae for all columns (in selection,where,group by and order by) without using any alias. However you can use an alias as guided by other answers

I just found another answer online in the comments:

For medians in almost any SQL:

SELECT x.val from data x, data y
GROUP BY x.val
HAVING SUM(SIGN(1-SIGN(y.val-x.val))) = (COUNT(*)+1)/2

Make sure your columns are well indexed and the index is used for filtering and sorting. Verify with the explain plans.

select count(*) from table --find the number of rows

Calculate the "median" row number. Maybe use: median_row = floor(count / 2).

Then pick it out of the list:

select val from table order by val asc limit median_row,1

This should return you one row with just the value you want.

Jacob

Get PHP SDK from github and run the following code:

<?php
$attachment = array(
    'message' => 'this is my message',
    'name' => 'This is my demo Facebook application!',
    'caption' => "Caption of the Post",
    'link' => 'http://mylink.com',
    'description' => 'this is a description',
    'picture' => 'http://mysite.com/pic.gif',
    'actions' => array(
        array(
            'name' => 'Get Search',
            'link' => 'http://www.google.com'
        )
    )
);

$result = $facebook->api('/me/feed/', 'post', $attachment);

the above code will Post the message on to your wall... and if you want to post onto your friends or others wall then replace me with the Facebook User Id of that user..for further information look out the API Documentation.

I have found a solution that works fine for nested model and array using native JavaScript functions.

var results = [{},{},...]; //your result data returned from sequelize query
var jsonString = JSON.stringify(results); //convert to string to remove the sequelize specific meta data

var obj = JSON.parse(jsonString); //to make plain json
// do whatever you want to do with obj as plain json

In my case, I forgot to tell the type controller that the response is a JSON object. response.setContentType("application/json");

Just tell git to not assume it is changed never matter what:

git update-index --assume-unchanged src/file/to/ignore

yes, you can remove the files from the git repository. But if your team all use the same IDE or you are by yourself, you probably don't want to do that. For yourself, you want to have an ok starting point to resume working, for your teammates as well.

If you're using C++ ranges - the full ranges-v3 library, not the limited functionality accepted into C++20 - you could do it this way:

auto results = str | ranges::views::tokenize(" ",1);

... and this is lazily-evaluated, i.e. O(1) time and space. You can alternatively set a vector to this range:

auto results = str | ranges::views::tokenize(" ",1) | to<std::vector>();

this will take O(m) space and O(n) time if str has n characters making up m words.

See also the library's own tokenization example, here.

#include <boost/progress.hpp>

using namespace boost;

int main (int argc, const char * argv[])
{
  progress_timer timer;

  // do stuff, preferably in a 100x loop to make it take longer.

  return 0;
}

When progress_timer goes out of scope it will print out the time elapsed since its creation.

UPDATE: Here's a version that works without Boost (tested on macOS/iOS):

#include <chrono>
#include <string>
#include <iostream>
#include <math.h>
#include <unistd.h>

class NLTimerScoped {
private:
    const std::chrono::steady_clock::time_point start;
    const std::string name;

public:
    NLTimerScoped( const std::string & name ) : name( name ), start( std::chrono::steady_clock::now() ) {
    }


    ~NLTimerScoped() {
        const auto end(std::chrono::steady_clock::now());
        const auto duration_ms = std::chrono::duration_cast<std::chrono::milliseconds>( end - start ).count();

        std::cout << name << " duration: " << duration_ms << "ms" << std::endl;
    }

};

int main(int argc, const char * argv[]) {

    {
        NLTimerScoped timer( "sin sum" );

        float a = 0.0f;

        for ( int i=0; i < 1000000; i++ ) {
            a += sin( (float) i / 100 );
        }

        std::cout << "sin sum = " << a << std::endl;
    }



    {
        NLTimerScoped timer( "sleep( 4 )" );

        sleep( 4 );
    }



    return 0;
}

For getting the IP Camera video link:

1. Open the IP Camera with given IP and PORT in browser
2. Right click the video and select "copy image address"
3. Use that address to capture video

Do the following two steps. I hope, it will solve the "404 not found" issue in tomcat server during the development of java servlet application.

Step 1: Right click on the server(in the server explorer tab)->Properties->Switch Location from workspace metadata to tomcat server

Step 2: Double Click on the server(in the server explorer tab)->Select Use tomcat installation option inside server location menu

before start make sure of installation:

yum install -y xorg-x11-server-Xorg xorg-x11-xauth xorg-x11-apps

1. start xming or cygwin
2. make connection with X11 forwarding (in putty don't forget to set localhost:0.0 for X display location)
3. edit sshd.cong and restart

     cat /etc/ssh/sshd_config | grep X
                             X11Forwarding yes
                             X11DisplayOffset 10
AddressFamily inet

4. Without the X11 forwarding, you are subjected to the X11 SECURITY and then you must: authorize the remote server to make a connection with the local X Server using a method (for instance, the xhost command) set the display environment variable to redirect the output to the X server of your local computer. In this example: 192.168.2.223 is the IP of the server 192.168.2.2 is the IP of the local computer where the x server is installed. localhost can also be used.

blablaco@blablaco01 ~
$ xhost 192.168.2.223
192.168.2.223 being added to access control list

blablaco@blablaco01 ~
$ ssh -l root 192.168.2.223
[email protected] password:
Last login: Sat May 22 18:59:04 2010 from etcetc
[root@oel5u5 ~]# export DISPLAY=192.168.2.2:0.0
[root@oel5u5 ~]# echo $DISPLAY
192.168.2.2:0.0
[root@oel5u5 ~]# xclock&

Then the xclock application must launch.

Check it on putty or mobaxterm and don't check in remote desktop Manager software. Be careful for user that sudo in.

You can use to_date, e.g.

> Event.last.starts_at
=> Wed, 13 Jan 2021 16:49:36.292979000 CET +01:00
> Event.last.starts_at.to_date
=> Wed, 13 Jan 2021

My answer is WRT python 2.6.2.

import commands

status, output = commands.getstatusoutput("curl -H \"Content-Type:application/json\" -k -u (few other parameters required) -X GET https://example.org -s")

print output

I apologize for not providing the required parameters 'coz it's confidential.

I stumbled across this article looking for a similar answer. I read @vsync example Using javascript's Number.prototype.toLocaleString: and it appeared to work well. The only complaint I had was that if you had more than a single input type="currency" within your page it would only modify the first instance of it.

As he mentions in his comments it was only designed as an example for stackoverflow.

However, the example worked well for me and although I have little experience with JS I figured out how to modify it so that it will work with multiple input type="currency" on the page using the document.querySelectorAll rather than document.querySelector and adding a for loop.

I hope this can be useful for someone else. ( Credit for the bulk of the code is @vsync )

var currencyInput = document.querySelectorAll( 'input[type="currency"]' );

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

    var currency = 'GBP'
    onBlur( {
        target: currencyInput[ i ]
    } )

    currencyInput[ i ].addEventListener( 'focus', onFocus )
    currencyInput[ i ].addEventListener( 'blur', onBlur )

    function localStringToNumber( s ) {
        return Number( String( s ).replace( /[^0-9.-]+/g, "" ) )
    }

    function onFocus( e ) {
        var value = e.target.value;
        e.target.value = value ? localStringToNumber( value ) : ''
    }

    function onBlur( e ) {
        var value = e.target.value

        var options = {
            maximumFractionDigits: 2,
            currency: currency,
            style: "currency",
            currencyDisplay: "symbol"
        }

        e.target.value = ( value || value === 0 ) ?
            localStringToNumber( value ).toLocaleString( undefined, options ) :
            ''
    }
}

    var currencyInput = document.querySelectorAll( 'input[type="currency"]' );

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

        var currency = 'GBP'
        onBlur( {
            target: currencyInput[ i ]
        } )

        currencyInput[ i ].addEventListener( 'focus', onFocus )
        currencyInput[ i ].addEventListener( 'blur', onBlur )

        function localStringToNumber( s ) {
            return Number( String( s ).replace( /[^0-9.-]+/g, "" ) )
        }

        function onFocus( e ) {
            var value = e.target.value;
            e.target.value = value ? localStringToNumber( value ) : ''
        }

        function onBlur( e ) {
            var value = e.target.value

            var options = {
                maximumFractionDigits: 2,
                currency: currency,
                style: "currency",
                currencyDisplay: "symbol"
            }

            e.target.value = ( value || value === 0 ) ?
                localStringToNumber( value ).toLocaleString( undefined, options ) :
                ''
        }
    }

.input_date {
    margin:1px 0px 50px 0px;
    font-family: 'Roboto', sans-serif;
    font-size: 18px;
    line-height: 1.5;
    color: #111;
    display: block;
    background: #ddd;
    height: 50px;
    border-radius: 5px;
    border: 2px solid #111111;
    padding: 0 20px 0 20px;
    width: 100px;
}

    <label for="cost_of_sale">Cost of Sale</label>
    <input class="input_date" type="currency" name="cost_of_sale" id="cost_of_sale" value="0.00">

    <label for="sales">Sales</label>
    <input class="input_date" type="currency" name="sales" id="sales" value="0.00">

     <label for="gm_pounds">GM Pounds</label>
     <input class="input_date" type="currency" name="gm_pounds" id="gm_pounds" value="0.00">

from Google

An .axd file is a HTTP Handler file. There are two types of .axd files.

1. ScriptResource.axd
2. WebResource.axd

These are files which are generated at runtime whenever you use ScriptManager in your Web app. This is being generated only once when you deploy it on the server.

Simply put the ScriptResource.AXD contains all of the clientside javascript routines for Ajax. Just because you include a scriptmanager that loads a script file it will never appear as a ScriptResource.AXD - instead it will be merely passed as the .js file you send if you reference a external script file. If you embed it in code then it may merely appear as part of the html as a tag and code but depending if you code according to how the ToolKit handles it - may or may not appear as as a ScriptResource.axd. ScriptResource.axd is only introduced with AJAX and you will never see it elsewhere

And ofcourse it is necessary

You can use the Closure-compiler as orangutancloud suggests. It's worth pointing out that you don't actually need to compile/minify the JavaScript, it ought to be possible to simply concatenate the JavaScript text files into a single text file. Just join them in the order they're normally included in the page.

My answer is a bit more complicated, and probably not perfect, but for those looking to output large numbers, I was able to do around 10 million in 3 seconds.

repeatString(){
    # argument 1: The string to print
    # argument 2: The number of times to print
    stringToPrint=$1
    length=$2

    # Find the largest integer value of x in 2^x=(number of times to repeat) using logarithms
    power=`echo "l(${length})/l(2)" | bc -l`
    power=`echo "scale=0; ${power}/1" | bc`

    # Get the difference between the length and 2^x
    diff=`echo "${length} - 2^${power}" | bc`

    # Double the string length to the power of x
    for i in `seq "${power}"`; do 
        stringToPrint="${stringToPrint}${stringToPrint}"
    done

    #Since we know that the string is now at least bigger than half the total, grab however many more we need and add it to the string.
    stringToPrint="${stringToPrint}${stringToPrint:0:${diff}}"
    echo ${stringToPrint}
}

And here's an example of the customizer implemented in Groovy:

https://github.com/UniconLabs/orville/blob/master/web/src/main/groovy/org/apereo/openregistry/config/TomcatSslConfiguration.groovy

The evaluation of condition resulted in an NA. The if conditional must have either a TRUE or FALSE result.

if (NA) {}
## Error in if (NA) { : missing value where TRUE/FALSE needed

This can happen accidentally as the results of calculations:

if(TRUE && sqrt(-1)) {}
## Error in if (TRUE && sqrt(-1)) { : missing value where TRUE/FALSE needed

To test whether an object is missing use is.na(x) rather than x == NA.

See also the related errors:

Error in if/while (condition) { : argument is of length zero

Error in if/while (condition) : argument is not interpretable as logical

if (NULL) {}
## Error in if (NULL) { : argument is of length zero

if ("not logical") {}
## Error: argument is not interpretable as logical

if (c(TRUE, FALSE)) {}
## Warning message:
## the condition has length > 1 and only the first element will be used

How about this ? PHPSocketio ?? It is a socket.io php server side alternative. The event loop is based on pecl event extension. Though haven't tried it myself till now.

Use MM for months. mm is for minutes.

DateTime.Now.ToString("dd/MM/yyyy");

You probably run this code at the begining an hour like (00:00, 05.00, 18.00) and mm gives minutes (00) to your datetime.

From Custom Date and Time Format Strings

"mm" --> The minute, from 00 through 59.

"MM" --> The month, from 01 through 12.

Here is a DEMO. (Which the month part of first line depends on which time do you run this code ;) )

getElementById will return false if the element was not found in the DOM.

var el = document.getElementById("customx");
if (el !== null && el.value === "")
{
  //The element was found and the value is empty.
}

Why not write a piece of code like:

int  max_neg = ~(1 << 31);
int  all_ones = -1;
int max_pos = all_ones & max_neg;

Full Working HTML Code. Cut+Paste into new .HTML file:

Contains Two Examples:

1. Canvas in HTML file.
2. Canvas dynamically created with Javascript.

Tested In:

1. Chrome
2. Internet Explorer
3. *Edge (title name does not show up)
4. Firefox
5. Opera

<!DOCTYPE HTML >
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title> #SAVE_CANVAS_TEST# </title>
    <meta 
        name   ="author" 
        content="John Mark Isaac Madison"
    >
    <!-- EMAIL: J4M4I5M7 -[AT]- Hotmail.com -->
</head>
<body>

<div id="about_the_code">
    Illustrates:
    <ol>
    <li>How to save a canvas from HTML page.     </li>
    <li>How to save a dynamically created canvas.</li>
    </ol>
</div>

<canvas id="DOM_CANVAS" 
        width ="300" 
        height="300"
></canvas>

<div id="controls">
    <button type="button" style="width:300px;"
            onclick="obj.SAVE_CANVAS()">
        SAVE_CANVAS ( Dynamically Made Canvas )
    </button>

    <button type="button" style="width:300px;"
            onclick="obj.SAVE_CANVAS('DOM_CANVAS')">
        SAVE_CANVAS ( Canvas In HTML Code )
    </button>
</div>

<script>
var obj = new MyTestCodeClass();
function MyTestCodeClass(){

    //Publically exposed functions:
    this.SAVE_CANVAS = SAVE_CANVAS;

    //:Private:
    var _canvas;
    var _canvas_id = "ID_OF_DYNAMIC_CANVAS";
    var _name_hash_counter = 0;

    //:Create Canvas:
    (function _constructor(){
        var D   = document;
        var CE  = D.createElement.bind(D);
        _canvas = CE("canvas");
        _canvas.width = 300;
        _canvas.height= 300;
        _canvas.id    = _canvas_id;
    })();

    //:Before saving the canvas, fill it so
    //:we can see it. For demonstration of code.
    function _fillCanvas(input_canvas, r,g,b){
        var ctx = input_canvas.getContext("2d");
        var c   = input_canvas;

        ctx.fillStyle = "rgb("+r+","+g+","+b+")";
        ctx.fillRect(0, 0, c.width, c.height);
    }

    //:Saves canvas. If optional_id supplied,
    //:will save canvas off the DOM. If not,
    //:will save the dynamically created canvas.
    function SAVE_CANVAS(optional_id){

        var c = _getCanvas( optional_id );

        //:Debug Code: Color canvas from DOM
        //:green, internal canvas red.
        if( optional_id ){
            _fillCanvas(c,0,255,0);
        }else{
            _fillCanvas(c,255,0,0);
        }

        _saveCanvas( c );
    }

    //:If optional_id supplied, get canvas
    //:from DOM. Else, get internal dynamically
    //:created canvas.
    function _getCanvas( optional_id ){
        var c = null; //:canvas.
        if( typeof optional_id == "string"){
            var id = optional_id;
            var  d = document;
            var c  = d.getElementById( id );
        }else{
            c = _canvas; 
        }
        return c;
    }

    function _saveCanvas( canvas ){
        if(!window){ alert("[WINDOW_IS_NULL]"); }

        //:We want to give the window a unique
        //:name so that we can save multiple times
        //:without having to close previous
        //:windows.
        _name_hash_counter++              ; 
        var NHC = _name_hash_counter      ;
        var URL = 'about:blank'           ;
        var name= 'UNIQUE_WINDOW_ID' + NHC;
        var w=window.open( URL, name )    ;

        if(!w){ alert("[W_IS_NULL]");}

        //:Create the page contents,
        //:THEN set the tile. Order Matters.
        var DW = ""                        ;
        DW += "<img src='"                 ;
        DW += canvas.toDataURL("image/png");
        DW += "' alt='from canvas'/>"      ;
        w.document.write(DW)               ;
        w.document.title = "NHC"+NHC       ;

    }

}//:end class

</script>

</body>
<!-- In IE: Script cannot be outside of body.  -->
</html>

Shouldn't known_hosts be a flat file, not a directory?

If that's not the problem, then this page on Github might be of some help. Try using SSH with the -v or -vv flag to see verbose error messages. It might give you a better idea of what's failing.

I got the problem like you so I decide to write small tool to help me out. Please check ExcelDiff_Tools. It comes with several key points:

• Support xls, xlsx, xlsm.
• With formula cell. It will compare both formula and value.
• I try to make UI look like standard diff text viewer with : modified, deleted, added, unchanged status. Please take a look with image below for example:

Chr(10) is the Line Feed character and Chr(13) is the Carriage Return character.

You probably won't notice a difference if you use only one or the other, but you might find yourself in a situation where the output doesn't show properly with only one or the other. So it's safer to include both.

Historically, Line Feed would move down a line but not return to column 1:

This  
    is  
        a  
            test.

Similarly Carriage Return would return to column 1 but not move down a line:

This  
is  
a  
test.

Paste this into a text editor and then choose to "show all characters", and you'll see both characters present at the end of each line. Better safe than sorry.

We found out that all the standard ways of getting the total memory of the current process have some issues.

• Runtime.getRuntime().totalMemory(): returns JVM memory only
• ActivityManager.getMemoryInfo(), Process.getFreeMemory() and anything else based on /proc/meminfo - returns memory info about all the processes combined (e.g. android_util_Process.cpp)
• Debug.getNativeHeapAllocatedSize() - uses mallinfo() which return information about memory allocations performed by malloc() and related functions only (see android_os_Debug.cpp)
• Debug.getMemoryInfo() - does the job but it's too slow. It takes about 200ms on Nexus 6 for a single call. The performance overhead makes this function useless for us as we call it regularly and every call is quite noticeable (see android_os_Debug.cpp)
• ActivityManager.getProcessMemoryInfo(int[]) - calls Debug.getMemoryInfo() internally (see ActivityManagerService.java)

Finally, we ended up using the following code:

const long pageSize = 4 * 1024; //`sysconf(_SC_PAGESIZE)`
string stats = File.ReadAllText("/proc/self/statm");
var statsArr = stats.Split(new [] {' ', '\t', '\n'}, 3);

if( statsArr.Length < 2 )
    throw new Exception("Parsing error of /proc/self/statm: " + stats);

return long.Parse(statsArr[1]) * pageSize;

It returns VmRSS metric. You can find more details about it here: one, two and three.

P.S. I noticed that the theme still has a lack of an actual and simple code snippet of how to estimate the private memory usage of the process if the performance isn't a critical requirement:

Debug.MemoryInfo memInfo = new Debug.MemoryInfo();
Debug.getMemoryInfo(memInfo);
long res = memInfo.getTotalPrivateDirty();

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) 
    res += memInfo.getTotalPrivateClean(); 

return res * 1024L;

There are a few efficient ways to implement this. Let's start with required imports:

from pyspark.sql.functions import col, expr, when

You can use Hive IF function inside expr:

new_column_1 = expr(
    """IF(fruit1 IS NULL OR fruit2 IS NULL, 3, IF(fruit1 = fruit2, 1, 0))"""
)

or when + otherwise:

new_column_2 = when(
    col("fruit1").isNull() | col("fruit2").isNull(), 3
).when(col("fruit1") == col("fruit2"), 1).otherwise(0)

Finally you could use following trick:

from pyspark.sql.functions import coalesce, lit

new_column_3 = coalesce((col("fruit1") == col("fruit2")).cast("int"), lit(3))

With example data:

df = sc.parallelize([
    ("orange", "apple"), ("kiwi", None), (None, "banana"), 
    ("mango", "mango"), (None, None)
]).toDF(["fruit1", "fruit2"])

you can use this as follows:

(df
    .withColumn("new_column_1", new_column_1)
    .withColumn("new_column_2", new_column_2)
    .withColumn("new_column_3", new_column_3))

and the result is:

+------+------+------------+------------+------------+
|fruit1|fruit2|new_column_1|new_column_2|new_column_3|
+------+------+------------+------------+------------+
|orange| apple|           0|           0|           0|
|  kiwi|  null|           3|           3|           3|
|  null|banana|           3|           3|           3|
| mango| mango|           1|           1|           1|
|  null|  null|           3|           3|           3|
+------+------+------------+------------+------------+

The collect and collect! methods are aliases to map and map!, so they can be used interchangeably. Here is an easy way to confirm that:

Array.instance_method(:map) == Array.instance_method(:collect)
 => true

ssh -o ConnectTimeout=10  <hostName>

Where 10 is time in seconds. This Timeout applies only to the creation of the connection.

Another (probably not production-ready or recommended) method I just came up with is to concat the values to a string and count this string distinctively:

SELECT count(DISTINCT concat(id, name, address)) FROM mytable;

If the number of occurences should be taken into account you probably need to use something like collections.Counter:

list_1=["a", "b", "c", "d", "e"]
list_2=["a", "f", "c", "m"] 
from collections import Counter
cnt1 = Counter(list_1)
cnt2 = Counter(list_2)
final = [key for key, counts in cnt2.items() if cnt1.get(key, 0) != counts]

>>> final
['f', 'm']

As promised this can also handle differing number of occurences as "difference":

list_1=["a", "b", "c", "d", "e", 'a']
cnt1 = Counter(list_1)
cnt2 = Counter(list_2)
final = [key for key, counts in cnt2.items() if cnt1.get(key, 0) != counts]

>>> final
['a', 'f', 'm']

select DateAdded, count(DateAdded) as num_records
from your_table
WHERE DateAdded >=dateadd(day,datediff(day,0,GetDate())- 7,0)
group by DateAdded
order by DateAdded

Let me seperate up everything and solve approach each problem in isolation:

Authentication

For authentication, baseauth has the advantage that it is a mature solution on the protocol level. This means a lot of "might crop up later" problems are already solved for you. For example, with BaseAuth, user agents know the password is a password so they don't cache it.

Auth server load

If you dispense a token to the user instead of caching the authentication on your server, you are still doing the same thing: Caching authentication information. The only difference is that you are turning the responsibility for the caching to the user. This seems like unnecessary labor for the user with no gains, so I recommend to handle this transparently on your server as you suggested.

Transmission Security

If can use an SSL connection, that's all there is to it, the connection is secure*. To prevent accidental multiple execution, you can filter multiple urls or ask users to include a random component ("nonce") in the URL.

url = username:[email protected]/api/call/nonce

If that is not possible, and the transmitted information is not secret, I recommend securing the request with a hash, as you suggested in the token approach. Since the hash provides the security, you could instruct your users to provide the hash as the baseauth password. For improved robustness, I recommend using a random string instead of the timestamp as a "nonce" to prevent replay attacks (two legit requests could be made during the same second). Instead of providing seperate "shared secret" and "api key" fields, you can simply use the api key as shared secret, and then use a salt that doesn't change to prevent rainbow table attacks. The username field seems like a good place to put the nonce too, since it is part of the auth. So now you have a clean call like this:

nonce = generate_secure_password(length: 16);
one_time_key = nonce + '-' + sha1(nonce+salt+shared_key);
url = username:[email protected]/api/call

It is true that this is a bit laborious. This is because you aren't using a protocol level solution (like SSL). So it might be a good idea to provide some kind of SDK to users so at least they don't have to go through it themselves. If you need to do it this way, I find the security level appropriate (just-right-kill).

Secure secret storage

It depends who you are trying to thwart. If you are preventing people with access to the user's phone from using your REST service in the user's name, then it would be a good idea to find some kind of keyring API on the target OS and have the SDK (or the implementor) store the key there. If that's not possible, you can at least make it a bit harder to get the secret by encrypting it, and storing the encrypted data and the encryption key in seperate places.

If you are trying to keep other software vendors from getting your API key to prevent the development of alternate clients, only the encrypt-and-store-seperately approach almost works. This is whitebox crypto, and to date, no one has come up with a truly secure solution to problems of this class. The least you can do is still issue a single key for each user so you can ban abused keys.

(*) EDIT: SSL connections should no longer be considered secure without taking additional steps to verify them.

INSERT INTO Table1 SELECT * FROM Table2

require(reshape2)

T <- melt(df, id = c("A"))

T <- dcast(T, A ~ variable, sum)

I am not certain the exact advantages over aggregate.

In the past, with VBA projects, I've used a label control with the background colored and adjust the size based on the progress. Some examples with similar approaches can be found in the following links:

1. http://oreilly.com/pub/h/2607
2. http://www.ehow.com/how_7764247_create-progress-bar-vba.html
3. http://spreadsheetpage.com/index.php/tip/displaying_a_progress_indicator/

Here is one that uses Excel's Autoshapes:

http://www.andypope.info/vba/pmeter.htm

If this is part of a batch script (.bat file) and you have a large list of files, you can use a multi-line ^, and optional /Y flag to suppresses prompting to confirm you want to overwrite an existing destination file.

REM Concatenate several files to one
COPY /Y ^
    this_is_file_1.csv + ^
    this_is_file_2.csv + ^
    this_is_file_3.csv + ^
    this_is_file_4.csv + ^
    this_is_file_5.csv + ^
    this_is_file_6.csv + ^
    this_is_file_7.csv + ^
    this_is_file_8.csv + ^
    this_is_file_9.csv ^
        output_file.csv

This is tidier than performing the command on one line.

I've been working through this entire post and others as well as tutorial videos without being able to solve my problem of not receiving messages, the registration token however worked.

Until then I had only been testing the app on the emulator. After trying it on a physical phone it instantly worked without any prior changes to the project.

Firstly, follow Energya's instruction:

pip install jupyter_contrib_nbextensions
jupyter contrib nbextension install --user
pip install jupyter_nbextensions_configurator
jupyter nbextensions_configurator enable --user

Second is the key: After opening jupiter notebook, click the Nbextension tab. Now Search "colla" from the searching tool provided by Nbextension(not by the web browser), then you will find something called "Collapsible Headings"

This is what you want!

If you want to do this easily from within Android Studio then on the left side, right above your file directory you will see a dropdown with options on how to view your files like:

Project, Android, and Packages, plus a list of Scopes.

If you are on Android it makes it hard to see when you add new folders or assets to your project - BUT if you change the dropdown to PROJECT then the file directory will match the file system on your computer, then go to:

app > src > main > res

From here you can find the conventional Eclipse type files like drawable/drawable-hdpi/drawable-mdpi and so on where you can easily drag and drop files into or import into and instantly see them. As soon as you see your files here they will be available when going to assign image src's and so on.

Good luck Android Warriors in a strange new world!

This worked for me:

$(document).ready(function() {

    // Do something exciting

    var prm = Sys.WebForms.PageRequestManager.getInstance();

    prm.add_endRequest(function() {
        // re-bind your jQuery events here
    });

});

Should be :

HTML :

<form method="post" action="">
    <input id="name" name="name" type="text" size="40"/>
    <input type="radio" name="radio" value="test"/>Test
    <input type="submit" name="submit" value="submit"/>
</form>

PHP Code :

if(isset($_POST['submit']))
{

    echo $radio_value = $_POST["radio"];
}

SELECT a.file_name,
       substr(A.tablespace_name,1,14) tablespace_name,
       trunc(decode(A.autoextensible,'YES',A.MAXSIZE-A.bytes+b.free,'NO',b.free)/1024/1024) free_mb,
       trunc(a.bytes/1024/1024) allocated_mb,
       trunc(A.MAXSIZE/1024/1024) capacity,
       a.autoextensible ae
FROM (
     SELECT file_id, file_name,
            tablespace_name,
            autoextensible,
            bytes,
            decode(autoextensible,'YES',maxbytes,bytes) maxsize
     FROM   dba_data_files
     GROUP BY file_id, file_name,
              tablespace_name,
              autoextensible,
              bytes,
              decode(autoextensible,'YES',maxbytes,bytes)
     ) a,
     (SELECT file_id,
             tablespace_name,
             sum(bytes) free
      FROM   dba_free_space
      GROUP BY file_id,
               tablespace_name
      ) b
WHERE a.file_id=b.file_id(+)
AND A.tablespace_name=b.tablespace_name(+)
ORDER BY A.tablespace_name ASC; 

Programmatic formatting solution:

The JSON.stringify method supported by many modern browsers (including IE8) can output a beautified JSON string:

JSON.stringify(jsObj, null, "\t"); // stringify with tabs inserted at each level
JSON.stringify(jsObj, null, 4);    // stringify with 4 spaces at each level

Demo: http://jsfiddle.net/AndyE/HZPVL/

This method is also included with json2.js, for supporting older browsers.

Manual formatting solution

If you don't need to do it programmatically, Try JSON Lint. Not only will it prettify your JSON, it will validate it at the same time.

there's socket.settimeout()

No need to even pass the class:

public <T> List<T> magicalListGetter() {
    return new ArrayList<T>();
}

Here is example of getting substring from 14 character to end of string. You can modify it to fit your needs

string text = "Retrieves a substring from this instance. The substring starts at a specified character position.";
//get substring where 14 is start index
string substring = text.Substring(14);

Here's a script I used to batch import a bunch of crt files in the current directory into the java keystore. Just save this to the same folder as your certificate, and run it like so:

./import_all_certs.sh

import_all_certs.sh

KEYSTORE="$(/usr/libexec/java_home)/jre/lib/security/cacerts";

function running_as_root()
{
  if [ "$EUID" -ne 0 ]
    then echo "NO"
    exit
  fi

  echo "YES"
}

function import_certs_to_java_keystore
{
  for crt in *.crt; do 
    echo prepping $crt 
    keytool -import -file $crt -storepass changeit -noprompt --alias alias__${crt} -keystore $KEYSTORE
    echo 
  done
}

if [ "$(running_as_root)" == "YES" ]
then
  import_certs_to_java_keystore
else
  echo "This script needs to be run as root!"
fi

As Christian's answer with assign() shows, there is a way to assign in the global environment. A simpler, shorter (but not better ... stick with assign) way is to use the <<- operator, ie

    a <<- "new" 

inside the function.

Much easier way: use template literals.

var variable = 'foo'
var expression = `.*${variable}.*`
var re = new RegExp(expression, 'g')
re.test('fdjklsffoodjkslfd') // true
re.test('fdjklsfdjkslfd') // false

Easiest Solution I've found:

After installing the MySQL package for Mac OS X Snow Leopard (check whether you have a 32bit or 64bit processor). Can always default to the 32bit version to be safe.

Simply click to install the MySQL preferences inside the dmg and when prompted whether to allow access for just you or for the entire system, choose entire system.

This worked great for me.

hashCode() method is not for providing a unique identifier for an object. It rather digests the object's state (i.e. values of member fields) to a single integer. This value is mostly used by some hash based data structures like maps and sets to effectively store and retrieve objects.

If you need an identifier for your objects, I recommend you to add your own method instead of overriding hashCode. For this purpose, you can create a base interface (or an abstract class) like below.

public interface IdentifiedObject<I> {
    I getId();
}

Example usage:

public class User implements IdentifiedObject<Integer> {
    private Integer studentId;

    public User(Integer studentId) {
        this.studentId = studentId;
    }

    @Override
    public Integer getId() {
        return studentId;
    }
}

It is defined as:

typedef unsigned long       DWORD;

However, according to the MSDN:

On 32-bit platforms, long is synonymous with int.

Therefore, DWORD is 32bit on a 32bit operating system. There is a separate define for a 64bit DWORD:

typdef unsigned _int64 DWORD64;

Hope that helps.

For Notepad++ 5.9

1. Press Ctrl+H
2. Select Search mode Extended(\n, \r, \t, \o, \x...)
3. Enter Find what: \r\n
4. Enter Replace with: ,
5. Replace_All should get the required result.

Xamarin.Android port: (C#)

public bool IsMainThread => Build.VERSION.SdkInt >= BuildVersionCodes.M
    ? Looper.MainLooper.IsCurrentThread
    : Looper.MyLooper() == Looper.MainLooper;

Usage:

if (IsMainThread) {
    // you are on UI/Main thread
}

There is no work-around for this aside from ditching the select element.

It's strange that git still does not have such a convenient tool "out of the box". I use it heavily when update some old version branch (which still has a lot of software users) by just some bugfixes from the current version branch. In this case it is often needed to quickly get just some lines of code from the file in trunk, ignoring a lot of other changes (that are not supposed to go into the old version)... And of course interactive three-way merge is needed in this case, git checkout --patch <branch> <file path> is not usable for this selective merge purpose.

You can do it easily:

Just add this line to [alias] section in your global .gitconfig or local .git/config file:

[alias]
    mergetool-file = "!sh -c 'git show $1:$2 > $2.theirs; git show $(git merge-base $1 $(git rev-parse HEAD)):$2 > $2.base; /C/BCompare3/BCompare.exe $2.theirs $2 $2.base $2; rm -f $2.theirs; rm -f $2.base;' -"

It implies you use Beyond Compare. Just change to software of your choice if needed. Or you can change it to three-way auto-merge if you don't need the interactive selective merging:

[alias]
    mergetool-file = "!sh -c 'git show $1:$2 > $2.theirs; git show $(git merge-base $1 $(git rev-parse HEAD)):$2 > $2.base; git merge-file $2 $2.base $2.theirs; rm -f $2.theirs; rm -f $2.base;' -"

Then use like this:

git mergetool-file <source branch> <file path>

This will give you the true selective tree-way merge opportunity of just any file in other branch.

• Handles nested objects and arrays
• Handles files
• Type support
• Tested in Chrome

const buildFormData = (formData: FormData, data: FormVal, parentKey?: string) => {
    if (isArray(data)) {
        data.forEach((el) => {
            buildFormData(formData, el, parentKey)
        })

    } else if (typeof data === "object" && !(data instanceof File)) {
        Object.keys(data).forEach((key) => {
            buildFormData(formData, (data as FormDataNest)[key], parentKey ? `${parentKey}.${key}` : key)
        })

    } else {
        if (isNil(data)) {
            return
        }

        let value = typeof data === "boolean" || typeof data === "number" ? data.toString() : data
        formData.append(parentKey as string, value)
    }
}

export const getFormData = (data: Record<string, FormDataNest>) => {
    const formData = new FormData()

    buildFormData(formData, data)

    return formData
}

Examples and Tests

const data = {
    filePhotos: imageArray,
}

yourAjaxCall({
   ...,
   data: getFormData(data)
})

Screenshot from Chrome dev tools - Network - Headers:

const data = {
    nested: {
        a: 1,
        b: ["hello", "world"],
        c: {
            d: 2,
            e: ["hello", "world"],
        }
    }
}

yourAjaxCall({
   ...,
   data: getFormData(data)
})

It's a syntax for array references - you need to use (&array) to clarify to the compiler that you want a reference to an array, rather than the (invalid) array of references int & array[100];.

EDIT: Some clarification.

void foo(int * x);
void foo(int x[100]);
void foo(int x[]);

These three are different ways of declaring the same function. They're all treated as taking an int * parameter, you can pass any size array to them.

void foo(int (&x)[100]);

This only accepts arrays of 100 integers. You can safely use sizeof on x

void foo(int & x[100]); // error

This is parsed as an "array of references" - which isn't legal.

This is the is simplest solution that worked for me.

<div
  contentEditable='true'
  onInput={e => console.log('Text inside div', e.currentTarget.textContent)}
>
Text inside div
</div>

Technically, there's no built-in command to edit an existing symbolic link. It can be easily achieved with a few short commands.

Here's a little bash/zsh function I wrote to update an existing symbolic link:

# -----------------------------------------
# Edit an existing symbolic link
#
# @1 = Name of symbolic link to edit
# @2 = Full destination path to update existing symlink with 
# -----------------------------------------
function edit-symlink () {
    if [ -z "$1" ]; then
        echo "Name of symbolic link you would like to edit:"
        read LINK
    else
        LINK="$1"
    fi
    LINKTMP="$LINK-tmp"
    if [ -z "$2" ]; then
        echo "Full destination path to update existing symlink with:"
        read DEST
    else
        DEST="$2"
    fi
    ln -s $DEST $LINKTMP
    rm $LINK
    mv $LINKTMP $LINK
    printf "Updated $LINK to point to new destination -> $DEST"
}

That's depending if userid is a resource identifier or additional parameter. If it is then it's ok to return 404 if not you might return other code like

400 (bad request) - indicates a bad request
or
412 (Precondition Failed) e.g. conflict by performing conditional update

More info in free InfoQ Explores: REST book.

you can write sudo password for your playbook in the hosts file like this:

[host-group-name]
host-name:port ansible_sudo_pass='*your-sudo-password*'

Generally it means that you are providing an index for which a list element does not exist.

E.g, if your list was [1, 3, 5, 7], and you asked for the element at index 10, you would be well out of bounds and receive an error, as only elements 0 through 3 exist.

You could try to force the browser to open a "Save As..." dialog by doing something like:

header('Content-type: text/csv');
header('Content-disposition: attachment;filename=MyVerySpecial.csv');
echo "cell 1, cell 2";

Which should work across most major browsers.

Just set this to v21/styles.xml file

 <item name="android:windowDrawsSystemBarBackgrounds">true</item>
 <item name="android:statusBarColor">@color/colorPrimaryDark</item>

and be sure

 <item name="android:windowTranslucentStatus">false</item>

For those who are having trouble with fatal error: ESP8266WiFi.h: No such file or directory, you can install the package manually.

1. Download the Arduino ESP8266 core from here https://github.com/esp8266/Arduino
2. Go into library from the downloaded core and grab ESP8266WiFi.
3. Drag that into your local Arduino/library folder. This can be found by going into preferences and looking at your Sketchbook location

You may still need to have the http://arduino.esp8266.com/stable/package_esp8266com_index.json package installed beforehand, however.

Edit: That wasn't the full issue, you need to make sure you have the correct ESP8266 Board selected before compiling.

Hope this helps others.

Similarly I fixed it like this (notice python34):

sudo yum install python34-devel

Shelving is like your changes have been stored in the source control without affecting the existing changes. Means if you check in a file in source control it will modify the existing file but shelving is like storing your changes in source control but without modifying the actual changes.

Delete platforms/android folder and try to rebuild. That helped me a lot.

(Visual Studio Tools for Apache Cordova)

Itertools repeat combined with list extend.

from itertools import repeat
l = []
l.extend(repeat(x, 100))

Give http://www.privateshell.com/ a shot.

I want to refine this a little bit because down-votes indicate to me that people don't understand that these suggestions are like "last hope" approach for someone who got into the state described in the question.

Check your console input history and/or ant scripts you have been using if you have them. Keep in mind that the console history will not be saved if you were promoted for password but if you entered it within for example signing command you can find it.

You mentioned you have a zip with a password in which your certificate file is stored, you could try just brute force opening that with many tools available. People will say "Yea but what if you used strong password, you should bla,bla,bla..." Unfortunately in that case tough-luck. But people are people and they sometimes use simple passwords. For you any tool that can provide dictionary attacks in which you can enter your own words and set them to some passwords you suspect might help you. Also if password is short enough with today CPUs even regular brute force guessing might work since your zip file does not have any limitation on number of guesses so you will not get blocked as if you tried to brute force some account on a website.

In addition to the above posts, i'd like to point out that "man ls" will give you a nice manual about the "ls" ( List " command.

Also, using ls -la myFile will list & show all the facts about that file.

Basic overview of hashing and encryption/decryption techniques are.

Hashing:

If you hash any plain text again you can not get the same plain text from hashed text. Simply, It's a one-way process.

Encryption and Decryption:

If you encrypt any plain text with a key again you can get same plain text by doing decryption on encrypted text with same(symetric)/diffrent(asymentric) key.

UPDATE: To address the points mentioned in the edited question.

1. When to use hashes vs encryptions

Hashing is useful if you want to send someone a file. But you are afraid that someone else might intercept the file and change it. So a way that the recipient can make sure that it is the right file is if you post the hash value publicly. That way the recipient can compute the hash value of the file received and check that it matches the hash value.

Encryption is good if you say have a message to send to someone. You encrypt the message with a key and the recipient decrypts with the same (or maybe even a different) key to get back the original message. credits

2. What makes a hash or encryption algorithm different (from a theoretical/mathematical level) i.e. what makes hashes irreversible (without aid of a rainbow tree)

Basically hashing is an operation that loses information but not encryption. Let's look at the difference in simple mathematical way for our easy understanding, of course both have much more complicated mathematical operation with repetitions involved in it

Encryption/Decryption (Reversible):

---

Addition:

4 + 3 = 7  

This can be reversed by taking the sum and subtracting one of the addends

7 - 3 = 4     

Multiplication:

4 * 5 = 20  

This can be reversed by taking the product and dividing by one of the factors

20 / 4 = 5    

So, here we could assume one of the addends/factors is a decrpytion key and result(7,20) is an excrypted text.

---

Hashing (Not Reversible):

---

Modulo division:

22 % 7 = 1   

This can not be reversed because there is no operation that you can do to the quotient and the dividend to reconstitute the divisor (or vice versa).

Can you find an operation to fill in where the '?' is?

1  ?  7 = 22  
1  ?  22 = 7

So hash functions have the same mathematical quality as modulo division and looses the information.

credits

• @Mock creates a mock implementation for the classes you need.
• @InjectMock creates an instance of the class and injects the mocks that are marked with the annotations @Mock into it.

For example

@Mock
StudentDao studentDao;

@InjectMocks
StudentService service;

@Before
public void setUp() throws Exception {
    MockitoAnnotations.initMocks(this);
}

Here we need the DAO class for the service class. So, we mock it and inject it in the service class instance. Similarly, in Spring framework all the @Autowired beans can be mocked by @Mock in jUnits and injected into your bean through @InjectMocks.

MockitoAnnotations.initMocks(this) method initialises these mocks and injects them for every test method so it needs to be called in the setUp() method.

This link has a good tutorial for Mockito framework

Just to clarify the Training/Validation/Test data sets: The training set is used to perform the initial training of the model, initializing the weights of the neural network.

The validation set is used after the neural network has been trained. It is used for tuning the network's hyperparameters, and comparing how changes to them affect the predictive accuracy of the model. Whereas the training set can be thought of as being used to build the neural network's gate weights, the validation set allows fine tuning of the parameters or architecture of the neural network model. It's useful as it allows repeatable comparison of these different parameters/architectures against the same data and networks weights, to observe how parameter/architecture changes affect the predictive power of the network.

Then the test set is used only to test the predictive accuracy of the trained neural network on previously unseen data, after training and parameter/architecture selection with the training and validation data sets.

You can generate script from Task menu

For detailed reference

How to migrate a SQL Server database to a lower version

Darryl Hein's mention above of TCPDF is likely a great idea. Nicola Asuni's code is pretty handy and powerful. The only killer is if you ever plan on merging PDF files with your generated PDF it doesn't have those features. You would have to create the PDF and then merge it using something like PDFTK by Sid Steward (www.pdflabs.com/tools/pdftk-the-pdf-toolkit/).

You can use jQuery serialize function along with get/post as follows:

$.get('server.php?' + $('#theForm').serialize())

$.post('server.php', $('#theform').serialize())

jQuery Serialize Documentation: http://api.jquery.com/serialize/

Simple AJAX submit using jQuery:

// this is the id of the submit button
$("#submitButtonId").click(function() {

    var url = "path/to/your/script.php"; // the script where you handle the form input.

    $.ajax({
           type: "POST",
           url: url,
           data: $("#idForm").serialize(), // serializes the form's elements.
           success: function(data)
           {
               alert(data); // show response from the php script.
           }
         });

    return false; // avoid to execute the actual submit of the form.
});

<form (keydown)="someMethod($event)">
     <input type="text">
</form>

someMethod(event:any){
   if(event.keyCode == 13){
      alert('Entered Click Event!');
   }else{
   }
}

Suppose your drop down list is:

<asp:DropDownList runat="server" id="ddl">
<asp:ListItem Value="0" text="Select a Value">
....
</asp:DropDownList>

There are two ways:

<asp:RequiredFieldValidator ID="re1" runat="Server" InitialValue="0" />

the 2nd way is to use a compare validator:

<asp:CompareValidator ID="re1" runat="Server" ValueToCompare="0" ControlToCompare="ddl" Operator="Equal" />

I wrote an assembly binding log viewer named Fusion++ and put it on GitHub.

You can get the latest release from here or via chocolatey (choco install fusionplusplus).

I hope you and some of the visitors in here can save some worthy lifetime minutes with it.

You shouldn't use both ngRoute and UI-router. Here's a sample code for UI-router:

repoApp.config(function($stateProvider, $urlRouterProvider) {_x000D_
  _x000D_
  $stateProvider_x000D_
    .state('state1', {_x000D_
      url: "/state1",_x000D_
      templateUrl: "partials/state1.html",_x000D_
      controller: 'YourCtrl'_x000D_
    })_x000D_
    _x000D_
    .state('state2', {_x000D_
      url: "/state2",_x000D_
      templateUrl: "partials/state2.html",_x000D_
      controller: 'YourOtherCtrl'_x000D_
    });_x000D_
    $urlRouterProvider.otherwise("/state1");_x000D_
});_x000D_
//etc.

You can find a great answer on the difference between these two in this thread: What is the difference between angular-route and angular-ui-router?

You can also consult UI-Router's docs here: https://github.com/angular-ui/ui-router

For version 2.4.3 (current version as of posting date), create a config file and then execute the following:

C:\MongoDB\bin\mongod.exe --config C:\MongoDB\mongod.cfg --service

Tuple classes allow developers to be 'quick and lazy' by not defining a specific class for a specific use.

The property names are Item1, Item2, Item3 ..., which may not be meaningful in some cases or without documentation.

Tuple classes have strongly typed generic parameters. Still users of the Tuple classes may infer from the type of generic parameters.

If you use the "select()" statement, you can do this:

$category = $catrep->createQueryBuilder('cc')
    ->select('DISTINCT cc.contenttype')
    ->Where('cc.contenttype = :type')
    ->setParameter('type', 'blogarticle')
    ->getQuery();

$categories = $category->getResult();

If you specify CSS attributes for your body element it should apply to anything within <body></body> so long as you don't override them later in the stylesheet.

If this is your own server application then i suggest using the following header

Content-disposition: attachment; filename=fname.ext

This will force any browser to download the file and not render it in the browser window.

If you use Excel, then the command would be Find and MID. Here is what it would look like in Powershell.

 $text = "asdfNAME=PC123456<>Diweursejsfdjiwr"

asdfNAME=PC123456<>Diweursejsfdjiwr - Randon line of text, we want PC123456

 $text.IndexOf("E=")

7 - this is the "FIND" command for Powershell

 $text.substring(10,5)

C1234 - this is the "MID" command for Powershell

 $text.substring($text.IndexOf("E=")+2,8)

PC123456 - tada it has found and cut our text

-RavonTUS

If you want to pass global variables into new scripts, you can create a python file that is only meant for holding global variables (e.g. globals.py). When you import this file at the top of the child script, it should have access to all of those variables.

If you are writing to these variables, then that is a different story. That involves concurrency and locking the variables, which I'm not going to get into unless you want.

This has obviously been fixed in newer releases (SE 6 and 7). I experience a 30 second caching time max when running the following code snippet while watching port 53 activity using tcpdump.

/**
 * http://stackoverflow.com/questions/1256556/any-way-to-make-java-honor-the-dns-caching-timeout-ttl
 *
 * Result: Java 6 distributed with Ubuntu 12.04 and Java 7 u15 downloaded from Oracle have
 * an expiry time for dns lookups of approx. 30 seconds.
 */

import java.util.*;
import java.text.*;
import java.security.*;

import java.net.InetAddress;
import java.net.UnknownHostException;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;

public class Test {
    final static String hostname = "www.google.com";
    public static void main(String[] args) {
        // only required for Java SE 5 and lower:
        //Security.setProperty("networkaddress.cache.ttl", "30");

        System.out.println(Security.getProperty("networkaddress.cache.ttl"));
        System.out.println(System.getProperty("networkaddress.cache.ttl"));
        System.out.println(Security.getProperty("networkaddress.cache.negative.ttl"));
        System.out.println(System.getProperty("networkaddress.cache.negative.ttl"));

        while(true) {
            int i = 0;
            try {
                makeRequest();
                InetAddress inetAddress = InetAddress.getLocalHost();
                System.out.println(new Date());
                inetAddress = InetAddress.getByName(hostname);
                displayStuff(hostname, inetAddress);
            } catch (UnknownHostException e) {
                e.printStackTrace();
            }
            try {
                Thread.sleep(5L*1000L);
            } catch(Exception ex) {}
            i++;
        }
    }

    public static void displayStuff(String whichHost, InetAddress inetAddress) {
        System.out.println("Which Host:" + whichHost);
        System.out.println("Canonical Host Name:" + inetAddress.getCanonicalHostName());
        System.out.println("Host Name:" + inetAddress.getHostName());
        System.out.println("Host Address:" + inetAddress.getHostAddress());
    }

    public static void makeRequest() {
        try {
            URL url = new URL("http://"+hostname+"/");
            URLConnection conn = url.openConnection();
            conn.connect();
            InputStream is = conn.getInputStream();
            InputStreamReader ird = new InputStreamReader(is);
            BufferedReader rd = new BufferedReader(ird);
            String res;
            while((res = rd.readLine()) != null) {
                System.out.println(res);
                break;
            }
            rd.close();
        } catch(Exception ex) {
            ex.printStackTrace();
        }
    }
}

Warning: As of Feb 11th 2020, request is fully deprecated.

One another example - you need to install request module for that

var request = require('request');
function get_trustyou(trust_you_id, callback) {
    var options = {
        uri : 'https://api.trustyou.com/hotels/'+trust_you_id+'/seal.json',
        method : 'GET'
    }; 
    var res = '';
    request(options, function (error, response, body) {
        if (!error && response.statusCode == 200) {
            res = body;
        }
        else {
            res = 'Not Found';
        }
        callback(res);
    });
}

get_trustyou("674fa44c-1fbd-4275-aa72-a20f262372cd", function(resp){
    console.log(resp);
});

The following is working fine for me using SQLite:

SELECT * 
    FROM ingresosgastos 
    WHERE fecharegistro BETWEEN "2010-01-01" AND "2013-01-01"

I just want to point out, even syntax of itemgetter looks really neat, but it's kinda slow when perform on large list.

import timeit
from operator import itemgetter
start=timeit.default_timer()
for i in range(1000000):
    itemgetter(0,2,3)(myList)
print ("Itemgetter took ", (timeit.default_timer()-start))

Itemgetter took 1.065209062149279

start=timeit.default_timer()
for i in range(1000000):
    myList[0],myList[2],myList[3]
print ("Multiple slice took ", (timeit.default_timer()-start))

Multiple slice took 0.6225321444745759

Map reduce is a framework that was developed to process massive amounts of data efficiently. For example, if we have 1 million records in a dataset, and it is stored in a relational representation - it is very expensive to derive values and perform any sort of transformations on these.

For Example In SQL, Given the Date of Birth, to find out How many people are of age > 30 for a million records would take a while, and this would only increase in order of magnitute when the complexity of the query increases. Map Reduce provides a cluster based implementation where data is processed in a distributed manner

Here is a wikipedia article explaining what map-reduce is all about

Another good example is Finding Friends via map reduce can be a powerful example to understand the concept, and a well used use-case.

Personally, found this link quite useful to understand the concept

Copying the explanation provided in the blog (In case the link goes stale)

Finding Friends

MapReduce is a framework originally developed at Google that allows for easy large scale distributed computing across a number of domains. Apache Hadoop is an open source implementation.

I'll gloss over the details, but it comes down to defining two functions: a map function and a reduce function. The map function takes a value and outputs key:value pairs. For instance, if we define a map function that takes a string and outputs the length of the word as the key and the word itself as the value then map(steve) would return 5:steve and map(savannah) would return 8:savannah. You may have noticed that the map function is stateless and only requires the input value to compute it's output value. This allows us to run the map function against values in parallel and provides a huge advantage. Before we get to the reduce function, the mapreduce framework groups all of the values together by key, so if the map functions output the following key:value pairs:

3 : the
3 : and
3 : you
4 : then
4 : what
4 : when
5 : steve
5 : where
8 : savannah
8 : research

They get grouped as:

3 : [the, and, you]
4 : [then, what, when]
5 : [steve, where]
8 : [savannah, research]

Each of these lines would then be passed as an argument to the reduce function, which accepts a key and a list of values. In this instance, we might be trying to figure out how many words of certain lengths exist, so our reduce function will just count the number of items in the list and output the key with the size of the list, like:

3 : 3
4 : 3
5 : 2
8 : 2

The reductions can also be done in parallel, again providing a huge advantage. We can then look at these final results and see that there were only two words of length 5 in our corpus, etc...

The most common example of mapreduce is for counting the number of times words occur in a corpus. Suppose you had a copy of the internet (I've been fortunate enough to have worked in such a situation), and you wanted a list of every word on the internet as well as how many times it occurred.

The way you would approach this would be to tokenize the documents you have (break it into words), and pass each word to a mapper. The mapper would then spit the word back out along with a value of 1. The grouping phase will take all the keys (in this case words), and make a list of 1's. The reduce phase then takes a key (the word) and a list (a list of 1's for every time the key appeared on the internet), and sums the list. The reducer then outputs the word, along with it's count. When all is said and done you'll have a list of every word on the internet, along with how many times it appeared.

Easy, right? If you've ever read about mapreduce, the above scenario isn't anything new... it's the "Hello, World" of mapreduce. So here is a real world use case (Facebook may or may not actually do the following, it's just an example):

Facebook has a list of friends (note that friends are a bi-directional thing on Facebook. If I'm your friend, you're mine). They also have lots of disk space and they serve hundreds of millions of requests everyday. They've decided to pre-compute calculations when they can to reduce the processing time of requests. One common processing request is the "You and Joe have 230 friends in common" feature. When you visit someone's profile, you see a list of friends that you have in common. This list doesn't change frequently so it'd be wasteful to recalculate it every time you visited the profile (sure you could use a decent caching strategy, but then I wouldn't be able to continue writing about mapreduce for this problem). We're going to use mapreduce so that we can calculate everyone's common friends once a day and store those results. Later on it's just a quick lookup. We've got lots of disk, it's cheap.

Assume the friends are stored as Person->[List of Friends], our friends list is then:

A -> B C D
B -> A C D E
C -> A B D E
D -> A B C E
E -> B C D

Each line will be an argument to a mapper. For every friend in the list of friends, the mapper will output a key-value pair. The key will be a friend along with the person. The value will be the list of friends. The key will be sorted so that the friends are in order, causing all pairs of friends to go to the same reducer. This is hard to explain with text, so let's just do it and see if you can see the pattern. After all the mappers are done running, you'll have a list like this:

For map(A -> B C D) :

(A B) -> B C D
(A C) -> B C D
(A D) -> B C D

For map(B -> A C D E) : (Note that A comes before B in the key)

(A B) -> A C D E
(B C) -> A C D E
(B D) -> A C D E
(B E) -> A C D E
For map(C -> A B D E) :

(A C) -> A B D E
(B C) -> A B D E
(C D) -> A B D E
(C E) -> A B D E
For map(D -> A B C E) :

(A D) -> A B C E
(B D) -> A B C E
(C D) -> A B C E
(D E) -> A B C E
And finally for map(E -> B C D):

(B E) -> B C D
(C E) -> B C D
(D E) -> B C D
Before we send these key-value pairs to the reducers, we group them by their keys and get:

(A B) -> (A C D E) (B C D)
(A C) -> (A B D E) (B C D)
(A D) -> (A B C E) (B C D)
(B C) -> (A B D E) (A C D E)
(B D) -> (A B C E) (A C D E)
(B E) -> (A C D E) (B C D)
(C D) -> (A B C E) (A B D E)
(C E) -> (A B D E) (B C D)
(D E) -> (A B C E) (B C D)

Each line will be passed as an argument to a reducer. The reduce function will simply intersect the lists of values and output the same key with the result of the intersection. For example, reduce((A B) -> (A C D E) (B C D)) will output (A B) : (C D) and means that friends A and B have C and D as common friends.

The result after reduction is:

(A B) -> (C D)
(A C) -> (B D)
(A D) -> (B C)
(B C) -> (A D E)
(B D) -> (A C E)
(B E) -> (C D)
(C D) -> (A B E)
(C E) -> (B D)
(D E) -> (B C)

Now when D visits B's profile, we can quickly look up (B D) and see that they have three friends in common, (A C E).

I prefer to use an angular filter.

app.filter('num', function() {
    return function(input) {
      return parseInt(input, 10);
    };
});

then you can use this in the dom:

{{'10'|num}}

Here is a fiddle.

Hope this helped!

I had the same problem with property Enabled and I discovered a first chance exception raised because of it is not thread-safe. I found solution about "How to update the GUI from another thread in C#?" here https://stackoverflow.com/a/661706/1529139 And it works !

Actually, em.flush(), do more than just sends the cached SQL commands. It tries to synchronize the persistence context to the underlying database. It can cause a lot of time consumption on your processes if your cache contains collections to be synchronized.

Caution on using it.

Create an Object using one array and loop through the second array to check if the value exists as key.

function intersection(arr1, arr2) {
  var myObj = {};
  var myArr = [];
  for (var i = 0, len = arr1.length; i < len; i += 1) {
    if(myObj[arr1[i]]) {
      myObj[arr1[i]] += 1; 
    } else {
      myObj[arr1[i]] = 1;
    }
  }
  for (var j = 0, len = arr2.length; j < len; j += 1) {
    if(myObj[arr2[j]] && myArr.indexOf(arr2[j]) === -1) {
      myArr.push(arr2[j]);
    }
  }
  return myArr;
}

That part is written to stderr, use 2> to redirect it. For example:

foo > stdout.txt 2> stderr.txt

or if you want in same file:

foo > allout.txt 2>&1

Note: this works in (ba)sh, check your shell for proper syntax

Visit Javascripture ! And go the section readAsText and try the example. You will be able to know how the readAsText function of FileReader works.

    <html>
    <head>
    <script>
      var openFile = function(event) {
        var input = event.target;

        var reader = new FileReader();
        reader.onload = function(){
          var text = reader.result;
          var node = document.getElementById('output');
          node.innerText = text;
          console.log(reader.result.substring(0, 200));
        };
        reader.readAsText(input.files[0]);
      };
    </script>
    </head>
    <body>
    <input type='file' accept='text/plain' onchange='openFile(event)'><br>
    <div id='output'>
    ...
    </div>
    </body>
    </html>

In lines with the answer of NoToast, you would need to have multiple versions of "your_image" in your res/drawable-ldpi,mdpi, hdpi, x-hdpi (for xtra large screens), remove match_parent and keep android: adjustViewBounds="true"

HTML5 does not support .mkv / Matroska files but you can use this code...

<video>
    <source src="video.mkv" type="video/mp4">
</video>

But it depends on the browser as to whether it will play or not. This method is known to work with Chrome.

While AngularJS allows you to get a hand on a click event (and thus a target of it) with the following syntax (note the $event argument to the setMaster function; documentation here: http://docs.angularjs.org/api/ng.directive:ngClick):

function AdminController($scope) {    
  $scope.setMaster = function(obj, $event){
    console.log($event.target);
  }
}

this is not very angular-way of solving this problem. With AngularJS the focus is on the model manipulation. One would mutate a model and let AngularJS figure out rendering.

The AngularJS-way of solving this problem (without using jQuery and without the need to pass the $event argument) would be:

<div ng-controller="AdminController">
    <ul class="list-holder">
        <li ng-repeat="section in sections" ng-class="{active : isSelected(section)}">
            <a ng-click="setMaster(section)">{{section.name}}</a>
        </li>
    </ul>
    <hr>
    {{selected | json}}
</div>

where methods in the controller would look like this:

$scope.setMaster = function(section) {
    $scope.selected = section;
}

$scope.isSelected = function(section) {
    return $scope.selected === section;
}

Here is the complete jsFiddle: http://jsfiddle.net/pkozlowski_opensource/WXJ3p/15/

This is one more option to find the element for above question

$("#tbIntervalos").find('td[id="'+horaInicial+'"]')

3 things to remember:

• set the android:layout_width of the children to "0dp"
• set the android:weightSum of the parent (edit: as Jason Moore noticed, this attribute is optional, because by default it is set to the children's layout_weight sum)
• set the android:layout_weight of each child proportionally (e.g. weightSum="5", three children: layout_weight="1", layout_weight="3", layout_weight="1")

Example:

    <LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:weightSum="5">

    <Button
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:text="1" />

    <Button
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="3"
        android:text="2" />

    <Button
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:text="3" />

    </LinearLayout>

And the result:

npm install google-closure-library --save

require("google-closure-library");
goog.require('goog.crypt.base64');

var result =goog.crypt.base64.encodeByteArray(Uint8Array.of(1,83,27,99,102,66));
console.log(result);

$node index.js would write AVMbY2Y= to the console.

you could always do something like

myString = "false"
val = (myString == "true")

the bit in parens would evaluate to False. This is just another way to do it without having to do an actual function call.

Easy way in kotlin

In your fragment

requireActivity().window.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE or WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN)

In your layout :

android:fitsSystemWindows="true"

ctrl != super on windows and linux machines.

If the F12 version of "Goto Definition" produces results of several files, the "ctrl + shift + click" version might not work well. I found that bug when viewing golang project with GoSublime package.

1) you can float the image to the left:

<img style="float:left" src="http://i.imgur.com/hCrQkJi.png">

2)You can use an HTML table to place elements on one line.

Code below

  <div class="navigation-bar">
    <div id="navigation-container">
      <table>
        <tr>
          <td><img src="http://i.imgur.com/hCrQkJi.png"></td>
          <td><ul>
            <li><a href="#">Home</a></li>
            <li><a href="#">Projects</a></li>
            <li><a href="#">About</a></li>
            <li><a href="#">Services</a></li>
            <li><a href="#">Get in Touch</a></li>
        </ul>
          </td></tr></table>
    </div>

Just check the implementation of source code by command click:

    private void initWindowDecorActionBar() {
    Window window = getWindow();

    // Initializing the window decor can change window feature flags.
    // Make sure that we have the correct set before performing the test below.
    window.getDecorView();

    if (isChild() || !window.hasFeature(Window.FEATURE_ACTION_BAR) || mActionBar != null) {
        return;
    }

    mActionBar = new WindowDecorActionBar(this);
    mActionBar.setDefaultDisplayHomeAsUpEnabled(mEnableDefaultActionBarUp);

    mWindow.setDefaultIcon(mActivityInfo.getIconResource());
    mWindow.setDefaultLogo(mActivityInfo.getLogoResource());
}

requestWindowFeature(Window.FEATURE_ACTION_BAR); Fixed my issue as I saw requestWindowFeature(Window.FEATURE_ACTION_BAR) is failing; code is open source use it !!

A bit late answer, but I suggest you have a look at a not well known project on codeplex called ConferenceXP

ConferenceXP is an open source research platform that provides simple, flexible, and extensible conferencing and collaboration using high-bandwidth networks and the advanced multimedia capabilities of Microsoft Windows. ConferenceXP helps researchers and educators develop innovative applications and solutions that feature broadcast-quality audio and video in support of real-time distributed collaboration and distance learning environments.

Full source (it's huge!) is provided. It implements the RTP protocol.

You need to escape the quotation marks:

String name = "\"john\"";

I faced problem some times so that in this case always avoid FragmentPagerAdapter and use FragmentStatePagerAdapter.

It work for me. I hope it will work for you also.

It's because you have turned on USB debugging in Developer Options. You can create a bug report by holding the power + both volume up and down.

Edit: This is what the forums say:

By pressing Volume up + Volume down + power button, you will feel a vibration after a second or so, that's when the bug reporting initiated.

To disable:

/system/bin/bugmailer.sh must be deleted/renamed.

There should be a folder on your SD card called "bug reports".

Have a look at this thread: http://forum.xda-developers.com/showthread.php?t=2252948

And this one: http://forum.xda-developers.com/showthread.php?t=1405639

Both answers are correct. If you user .TO -method then the semicolumn is OK - but not for the addrecipients-method. There you need to split, e.g. :

                Dim Splitter() As String
                Splitter = Split(AddrMail, ";")
                For Each Dest In Splitter
                    .Recipients.Add (Trim(Dest))
                Next

You can provide a tag inside your activity layout xml file.

Supply the android:tag attribute with a unique string.

Just as you would assign an id in a layout xml.

    android:tag="unique_tag"

link to developer guide

a tip for people who needs the path/url in global.asax file;

If you need to run this in global.asax > Application_Start and you app pool mode is integrated then you will receive the error below:

Request is not available in this context exception in Application_Start.

In that case you need to use this:

System.Web.HttpRuntime.AppDomainAppVirtualPath

Hope will help others..

Why not cp to location 1, then mv to location 2. This takes care of "removing" the original.

And no, it's not the correct syntax. | is used to "pipe" output from one program and turn it into input for the next program. What you want is ;, which seperates multiple commands.

cp file1 file2 ; cp file1 file3 ; rm file1

If you require that the individual commands MUST succeed before the next can be started, then you'd use && instead:

cp file1 file2 && cp file1 file3 && rm file1

That way, if either of the cp commands fails, the rm will not run.

You also can do it with functional programming:

from functools import reduce
reduce(lambda df1, df2: df1.merge(df2, "outer"), mydfs)

As of npm 5.2.0, once you've installed locally via

npm i typescript --save-dev

...you no longer need an entry in the scripts section of package.json -- you can now run the compiler with npx:

npx tsc

Now you don't have to update your package.json file every time you want to compile with different arguments.

As others have mentioned this can be caused when some firewalls and proxies prevent access to pages containing a large amount of ViewState data.

ASP.NET 2.0 introduced the ViewState Chunking mechanism which breaks the ViewState up into manageable chunks, allowing the ViewState to pass through the proxy / firewall without issue.

To enable this feature simply add the following line to your web.config file.

<pages maxPageStateFieldLength="4000">

This should not be used as an alternative to reducing your ViewState size but it can be an effective backstop against the "Invalid length for a Base-64 char array" error resulting from aggressive proxies and the like.

You can just append

track by version.id

to your ng-options.

As mentioned before, [[NSDate date] timeIntervalSince1970] returns an NSTimeInterval, which is a duration in seconds, not milli-seconds.

You can visit https://currentmillis.com/ to see how you can get in the language you desire. Here is the list -

ActionScript    (new Date()).time
C++ std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::system_clock::now().time_since_epoch()).count()
C#.NET  DateTimeOffset.UtcNow.ToUnixTimeMilliseconds()
Clojure (System/currentTimeMillis)
Excel / Google Sheets*  = (NOW() - CELL_WITH_TIMEZONE_OFFSET_IN_HOURS/24 - DATE(1970,1,1)) * 86400000
Go / Golang time.Now().UnixNano() / 1000000
Hive*   unix_timestamp() * 1000
Java / Groovy / Kotlin  System.currentTimeMillis()
Javascript  new Date().getTime()
MySQL*  UNIX_TIMESTAMP() * 1000
Objective-C (long long)([[NSDate date] timeIntervalSince1970] * 1000.0)
OCaml   (1000.0 *. Unix.gettimeofday ())
Oracle PL/SQL*  SELECT (SYSDATE - TO_DATE('01-01-1970 00:00:00', 'DD-MM-YYYY HH24:MI:SS')) * 24 * 60 * 60 * 1000 FROM DUAL
Perl    use Time::HiRes qw(gettimeofday); print gettimeofday;
PHP round(microtime(true) * 1000)
PostgreSQL  extract(epoch FROM now()) * 1000
Python  int(round(time.time() * 1000))
Qt  QDateTime::currentMSecsSinceEpoch()
R*  as.numeric(Sys.time()) * 1000
Ruby    (Time.now.to_f * 1000).floor
Scala   val timestamp: Long = System.currentTimeMillis
SQL Server  DATEDIFF(ms, '1970-01-01 00:00:00', GETUTCDATE())
SQLite* STRFTIME('%s', 'now') * 1000
Swift*  let currentTime = NSDate().timeIntervalSince1970 * 1000
VBScript / ASP  offsetInMillis = 60000 * GetTimeZoneOffset()
WScript.Echo DateDiff("s", "01/01/1970 00:00:00", Now()) * 1000 - offsetInMillis + Timer * 1000 mod 1000

For objective C I did something like below to print it -

long long mills = (long long)([[NSDate date] timeIntervalSince1970] * 1000.0);
 NSLog(@"Current date %lld", mills);

Hopw this helps.

if it is just a temporary switch

you can use exec as mentioned above, but for more of a permanent solution.

you can use chsh -s /bin/bash (to switch to bash) and chsh -s /bin/zsh (to switch to zsh)

Try changing

git checkout -- a

to

git checkout -- `git ls-files -m -- a`

Since version 1.7.0, Git's ls-files honors the skip-worktree flag.

Running your test script (with some minor tweaks changing git commit... to git commit -q and git status to git status --short) outputs:

Initialized empty Git repository in /home/user/repo/.git/
After read-tree:
a/a/aa
a/b/ab
b/a/ba
After modifying:
b/a/ba
 D a/a/aa
 D a/b/ab
 M b/a/ba
After checkout:
 M b/a/ba
a/a/aa
a/c/ac
a/b/ab
b/a/ba

Running your test script with the proposed checkout change outputs:

Initialized empty Git repository in /home/user/repo/.git/
After read-tree:
a/a/aa
a/b/ab
b/a/ba
After modifying:
b/a/ba
 D a/a/aa
 D a/b/ab
 M b/a/ba
After checkout:
 M b/a/ba
a/a/aa
a/b/ab
b/a/ba

The WPF RichTextBox has a Document property for setting the content a la MSDN:

// Create a FlowDocument to contain content for the RichTextBox.
        FlowDocument myFlowDoc = new FlowDocument();

        // Add paragraphs to the FlowDocument.
        myFlowDoc.Blocks.Add(new Paragraph(new Run("Paragraph 1")));
        myFlowDoc.Blocks.Add(new Paragraph(new Run("Paragraph 2")));
        myFlowDoc.Blocks.Add(new Paragraph(new Run("Paragraph 3")));
        RichTextBox myRichTextBox = new RichTextBox();

        // Add initial content to the RichTextBox.
        myRichTextBox.Document = myFlowDoc;

You can just use the AppendText method though if that's all you're after.

Hope that helps.

I know this is old, but since Postgresql 9.3 there is an option to use a keyword "LATERAL" to use RELATED subqueries inside of JOINS, so the query from the question would look like:

SELECT 
    name, author_id, count(*), t.total
FROM
    names as n1
    INNER JOIN LATERAL (
        SELECT 
            count(*) as total
        FROM 
            names as n2
        WHERE 
            n2.id = n1.id
            AND n2.author_id = n1.author_id
    ) as t ON 1=1
GROUP BY 
    n1.name, n1.author_id

Easier solution;

#/bin/bash
if (( ${1:-2} >= 2 )); then
    echo "First parameter must be 0 or 1"
fi
# rest of script...

Output

$ ./test 
First parameter must be 0 or 1
$ ./test 0
$ ./test 1
$ ./test 4
First parameter must be 0 or 1
$ ./test 2
First parameter must be 0 or 1

Explanation

• (( )) - Evaluates the expression using integers.
• ${1:-2} - Uses parameter expansion to set a value of 2 if undefined.
• >= 2 - True if the integer is greater than or equal to two 2.

Honestly, I was in the same boat as you. I've got a C++ Library that I wanted to connect to a graphing utility. I ended up using Boost Python and matplotlib. It was the best one that I could find.

As a side note: I was also wary of licensing. matplotlib and the boost libraries can be integrated into proprietary applications.

Here's an example of the code that I used:

#include <boost/python.hpp>
#include <pygtk/pygtk.h>
#include <gtkmm.h>

using namespace boost::python;
using namespace std;

// This is called in the idle loop.
bool update(object *axes, object *canvas) {
    static object random_integers = object(handle<>(PyImport_ImportModule("numpy.random"))).attr("random_integers");
    axes->attr("scatter")(random_integers(0,1000,1000), random_integers(0,1000,1000));
    axes->attr("set_xlim")(0,1000);
    axes->attr("set_ylim")(0,1000);
    canvas->attr("draw")();
    return true;
}

int main() {
    try {
        // Python startup code
        Py_Initialize();
        PyRun_SimpleString("import signal");
        PyRun_SimpleString("signal.signal(signal.SIGINT, signal.SIG_DFL)");

        // Normal Gtk startup code
        Gtk::Main kit(0,0);

        // Get the python Figure and FigureCanvas types.
        object Figure = object(handle<>(PyImport_ImportModule("matplotlib.figure"))).attr("Figure");
        object FigureCanvas = object(handle<>(PyImport_ImportModule("matplotlib.backends.backend_gtkagg"))).attr("FigureCanvasGTKAgg");

        // Instantiate a canvas
        object figure = Figure();
        object canvas = FigureCanvas(figure);
        object axes = figure.attr("add_subplot")(111);
        axes.attr("hold")(false);

        // Create our window.
        Gtk::Window window;
        window.set_title("Engineering Sample");
        window.set_default_size(1000, 600);

        // Grab the Gtk::DrawingArea from the canvas.
        Gtk::DrawingArea *plot = Glib::wrap(GTK_DRAWING_AREA(pygobject_get(canvas.ptr())));

        // Add the plot to the window.
        window.add(*plot);
        window.show_all();

        // On the idle loop, we'll call update(axes, canvas).
        Glib::signal_idle().connect(sigc::bind(&update, &axes, &canvas));

        // And start the Gtk event loop.
        Gtk::Main::run(window);

    } catch( error_already_set ) {
        PyErr_Print();
    }
}

The windows object has a windows field in which it is cloned and stores the date of the open window, close should be called on this field:

window.open("", '_self').window.close();

If you already have a dataframe, this is the fastest way:

In [1]: columns = ["col{}".format(i) for i in range(10)]
In [2]: orig_df = pd.DataFrame(np.ones((10, 10)), columns=columns)
In [3]: %timeit d = pd.DataFrame(np.zeros_like(orig_df), index=orig_df.index, columns=orig_df.columns)
10000 loops, best of 3: 60.2 µs per loop

Compare to:

In [4]: %timeit d = pd.DataFrame(0, index = np.arange(10), columns=columns)
10000 loops, best of 3: 110 µs per loop

In [5]: temp = np.zeros((10, 10))
In [6]: %timeit d = pd.DataFrame(temp, columns=columns)
10000 loops, best of 3: 95.7 µs per loop

:active       Adds a style to an element that is activated
:focus        Adds a style to an element that has keyboard input focus
:hover        Adds a style to an element when you mouse over it
:lang         Adds a style to an element with a specific lang attribute
:link         Adds a style to an unvisited link
:visited      Adds a style to a visited link

Source: CSS Pseudo-classes

Dictionary<int,string> comboSource = new Dictionary<int,string>();
comboSource.Add(1, "Sunday");
comboSource.Add(2, "Monday");

Aftr adding values to Dictionary, use this as combobox datasource:

comboBox1.DataSource = new BindingSource(comboSource, null);
comboBox1.DisplayMember = "Value";
comboBox1.ValueMember = "Key";

format: "YYYY" 

Should be capital instead of "yyyy"

Ems is a typography term, it controls text size, etc. Check here

Yes, div can take as many classes as you need. Use space to separate one from another.

 <div class="active dropdown-toggle custom-class">Example of multiple classses</div>

I'm not sure if this work in your particular situation, but I've found that padding on the inside div will push content around inside of a div if the containing div is a fixed size. You would have to either float or absolutely position your header element, but otherwise, I haven't tried this for variable size divs.

None of the other answers worked for me. After some tinkering I unsinstalled sklearn:

pip uninstall sklearn

Then I removed sklearn folder from here: (adjust the path to your system and python version)

C:\Users\%USERNAME%\AppData\Roaming\Python\Python36\site-packages

And the installed it from wheel from this site: link

The error was there probably because of a version conflict with sklearn installed somewhere else.

Base on an answer I saw in stackoveflow, I created this LESS mixin (use this link to generate the CSS code):

.max-lines(@lines: 3; @line-height: 1.2) {
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: @lines;
  line-height: @line-height;
  max-height: @line-height * @lines;
}

Usage

.example-1 {
    .max-lines();
}

.example-2 {
    .max-lines(3);
}

.example-3 {
    .max-lines(3, 1.5);
}

java.io.IOException: Connection reset by peer

In my case, the problem was with PUT requests (GET and POST were passing successfully).

Communication went through VPN tunnel and ssh connection. And there was a firewall with default restrictions on PUT requests... PUT requests haven't been passing throughout, to the server...

Problem was solved after exception was added to the firewall for my IP address.

Import in Java does not work at all, as it is evaluated at compile time only. (Treat it as shortcuts so you do not have to write fully qualified class names). At runtime there is no import at all, just FQCNs.

At runtime it is necessary that all classes you have referenced can be found by classloaders. (classloader infrastructure is sometimes dark magic and highly dependent on environment.) In case of an applet you will have to rig up your HTML tag properly and also provide necessary JAR archives on your server.

PS: Matching at runtime is done via qualified class names - class found under this name is not necessarily the same or compatible with class you have compiled against.

Do it this way (make necessary changes in code)..

            SqlConnection con = new SqlConnection(GetConnectionString());
            con.Open();
            SqlCommand cmd = new SqlCommand("CheckUser", con);
            cmd.CommandType = CommandType.StoredProcedure;
            SqlParameter p1 = new SqlParameter("username", username.Text);
            SqlParameter p2 = new SqlParameter("password", password.Text);
            cmd.Parameters.Add(p1);
            cmd.Parameters.Add(p2);
            SqlDataReader rd = cmd.ExecuteReader();
            if(rd.HasRows)
            {
                //do the things
            }
            else
            {
                lblinfo.Text = "abc";
            }

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;

namespace DBDemo2
{
    public partial class Form1 : Form
    {
        string connectionString = "Database=company;Uid=sa;Pwd=mypassword";
        System.Data.SqlClient.SqlConnection connection;
        System.Data.SqlClient.SqlCommand command;

        SqlParameter idparam = new SqlParameter("@eid", SqlDbType.Int, 0);
        SqlParameter nameparam = new SqlParameter("@name", SqlDbType.NChar, 20);
        SqlParameter addrparam = new SqlParameter("@addr", SqlDbType.NChar, 10);

        public Form1()
        {
            InitializeComponent();

            connection = new System.Data.SqlClient.SqlConnection(connectionString);
            connection.Open();
            command = new System.Data.SqlClient.SqlCommand(null, connection);
            command.CommandText = "insert into employee(ename, city) values(@name, @addr);select SCOPE_IDENTITY();";

            command.Parameters.Add(nameparam);
            command.Parameters.Add(addrparam);
            command.Prepare();

        }

        private void Form1_Load(object sender, EventArgs e)
        {
        }

        private void buttonSave_Click(object sender, EventArgs e)
        {


            try
            {
                int id = Int32.Parse(textBoxID.Text);
                String name = textBoxName.Text;
                String address = textBoxAddress.Text;

                command.Parameters[0].Value = name;
                command.Parameters[1].Value = address;

                SqlDataReader reader = command.ExecuteReader();
                if (reader.HasRows)
                {
                    reader.Read();
                    int nid = Convert.ToInt32(reader[0]);
                    MessageBox.Show("ID : " + nid);
                }
                /*int af = command.ExecuteNonQuery();
                MessageBox.Show(command.Parameters["ID"].Value.ToString());
                */
            }
            catch (NullReferenceException ne)
            {
                MessageBox.Show("Error is : " + ne.StackTrace);
            }
            catch (Exception ee)
            {
                MessageBox.Show("Error is : " + ee.StackTrace);
            }
        }

        private void buttonSave_Leave(object sender, EventArgs e)
        {

        }

        private void Form1_Leave(object sender, EventArgs e)
        {
            connection.Close();
        }
    }
}

Note: I found this question (varchar(255) v tinyblob v tinytext), which says that VARCHAR(n) requires n+1 bytes of storage for n<=255, n+2 bytes of storage for n>255. Is this the only reason? That seems kind of arbitrary, since you would only be saving two bytes compared to VARCHAR(256), and you could just as easily save another two bytes by declaring it VARCHAR(253).

No. you don't save two bytes by declaring 253. The implementation of the varchar is most likely a length counter and a variable length, nonterminated array. This means that if you store "hello" in a varchar(255) you will occupy 6 bytes: one byte for the length (the number 5) and 5 bytes for the five letters.

In General

Following is the syntax for writelines() method

fileObject.writelines( sequence )

Example

#!/usr/bin/python

# Open a file
fo = open("foo.txt", "rw+")
seq = ["This is 6th line\n", "This is 7th line"]

# Write sequence of lines at the end of the file.
line = fo.writelines( seq )

# Close opend file
fo.close()

Reference

http://www.tutorialspoint.com/python/file_writelines.htm

You need to login to your mysql terminal first using mysql -u username -p password

Then use this:

SELECT @@sql_mode; or SELECT @@GLOBAL.sql_mode;

output will be like this:

STRICT_TRANS_TABLES,STRICT_ALL_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,TRADITIONAL,NO_AUTO_CREATE_USER,NO_ENGINE_SUB

You can also set sql mode by this:

SET GLOBAL sql_mode=TRADITIONAL;