Probably the most elegant way.

You can simply use the alignment option present in Stack

child: Stack(
  alignment: Alignment.center
)

You can use MediaQuery for parent's dimension or FractionallySizedBox as containers.

You can keep <button type="submit">, but must remove the attribute action="" of <form>.

I have dynamically used to get this . I have a LinearLayout and within this used ScrollView as a child. Then i take again LinearLayout and add what ever View u want to this LinearLayout and then this LinearLayout add to ScrollView and finally add this ScrollView to LinearLayout. Then u can get scroll in ur ScrollView and nothing will left to visible.

LinearLayout(Parent)--ScrollView(child of LinerLayout) -- LinearLayout(child of ScrollView)-- add here textView, Buttons , spinner etc whatever u want . Then add this LinearLyout to ScrollView. Bcoz only one CHILD for ScrollView applicable and last add this ScrollView to LinearLyout.If defined area is exceed from Screen size then u will get a Scroll within ScrollView.

Another way to do it without modifying IFS:

read -r -a myarray <<< "${string//, /$IFS}"

Rather than changing IFS to match our desired delimiter, we can replace all occurrences of our desired delimiter ", " with contents of $IFS via "${string//, /$IFS}".

Maybe this will be slow for very large strings though?

This is based on Dennis Williamson's answer.

Using column name worked for me.

sorted_df = df.sort_values(by=['Column_name'], ascending=True)

This works in Spring 3.0.5. So, I would think it would work in 3.1

<context:component-scan base-package="com.example">  
    <context:exclude-filter type="aspectj" expression="com.example.dontscanme.*" />  
</context:component-scan> 

Sub Results2()

    Dim rCell As Range
    Dim shSource As Worksheet
    Dim shDest As Worksheet
    Dim lCnt As Long

    Set shSource = ThisWorkbook.Sheets("Sheet1")
    Set shDest = ThisWorkbook.Sheets("Sheet2")

    For Each rCell In shSource.Range("A1", shSource.Cells(shSource.Rows.Count, 1).End(xlUp)).Cells
        lCnt = lCnt + 1
        shDest.Range("A4").Offset(0, lCnt * 4).Formula = "=" & rCell.Address(False, False, , True) & "+" & rCell.Offset(0, 1).Address(False, False, , True)
    Next rCell

End Sub

This loops through column A of sheet1 and creates a formula in sheet2 for every cell. To find the last cell in Sheet1, I start at the bottom (shSource.Rows.Count) and .End(xlUp) to get the last cell in the column that's not blank.

To create the elements of the formula, I use the Address property of the cell on Sheet. I'm using three of the arguments to Address. The first two are RowAbsolute and ColumnAbsolute, both set to false. I don't care about the third argument, but I set the fourth argument (External) to True so that it includes the sheet name.

I prefer to go from Source to Destination rather than the other way. But that's just a personal preference. If you want to work from the destination,

Sub Results3()

    Dim i As Long, lCnt As Long
    Dim sh As Worksheet

    lCnt = Application.WorksheetFunction.CountA(ThisWorkbook.Sheets("Sheet1").Columns(1))
    Set sh = ThisWorkbook.Sheets("Sheet2")

    Const sSOURCE As String = "Sheet1!"

    For i = 1 To lCnt
        sh.Range("A1").Offset(0, 4 * (i - 1)).Formula = "=" & sSOURCE & "A" & i & " + " & sSOURCE & "B" & i
    Next i

End Sub

&>out time command >/dev/null

in your case

&>out time sleep 1 >/dev/null

then

cat out

Dmytro did a good job, but here is a more concise version.

class Program
{
    static void Main(string[] args)
    {
        LinkedList linkedList = new LinkedList(1);

        linkedList.Add(2);
        linkedList.Add(3);
        linkedList.Add(4);

        linkedList.AddFirst(0);

        linkedList.Print();            
    }
}

public class Node
{
    public Node(Node next, Object value)
    {
        this.next = next;
        this.value = value;
    }

    public Node next;
    public Object value;
}

public class LinkedList
{
    public Node head;

    public LinkedList(Object initial)
    {
        head = new Node(null, initial);
    }

    public void AddFirst(Object value)
    {
        head = new Node(head, value);            
    }

    public void Add(Object value)
    {
        Node current = head;

        while (current.next != null)
        {
            current = current.next;
        }

        current.next = new Node(null, value);
    }

    public void Print()
    {
        Node current = head;

        while (current != null)
        {
            Console.WriteLine(current.value);
            current = current.next;
        }
    }
}

This error is cause by security clutches between the web application and your java. To resolve it, look into your java setting under control panel. Move the security level to a medium.

Here's how can do it on Windows:

"""

    Display series of numbers in infinite loop
    Listen to key "s" to stop
    Only works on Windows because listening to keys
    is platform dependent

"""

# msvcrt is a windows specific native module
import msvcrt
import time

# asks whether a key has been acquired
def kbfunc():
    #this is boolean for whether the keyboard has bene hit
    x = msvcrt.kbhit()
    if x:
        #getch acquires the character encoded in binary ASCII
        ret = msvcrt.getch()
    else:
        ret = False
    return ret

#begin the counter
number = 1

#infinite loop
while True:

    #acquire the keyboard hit if exists
    x = kbfunc() 

    #if we got a keyboard hit
    if x != False and x.decode() == 's':
        #we got the key!
        #because x is a binary, we need to decode to string
        #use the decode() which is part of the binary object
        #by default, decodes via utf8
        #concatenation auto adds a space in between
        print ("STOPPING, KEY:", x.decode())
        #break loop
        break
    else:
        #prints the number
        print (number)
        #increment, there's no ++ in python
        number += 1
        #wait half a second
        time.sleep(0.5)

dir /s /b /a:d>output.txt will port it to a text file

With a vector iterators do no offer any real advantage. The syntax is uglier, longer to type and harder to read.

Iterating over a vector using iterators is not faster and is not safer (actually if the vector is possibly resized during the iteration using iterators will put you in big troubles).

The idea of having a generic loop that works when you will change later the container type is also mostly nonsense in real cases. Unfortunately the dark side of a strictly typed language without serious typing inference (a bit better now with C++11, however) is that you need to say what is the type of everything at each step. If you change your mind later you will still need to go around and change everything. Moreover different containers have very different trade-offs and changing container type is not something that happens that often.

The only case in which iteration should be kept if possible generic is when writing template code, but that (I hope for you) is not the most frequent case.

The only problem present in your explicit index loop is that size returns an unsigned value (a design bug of C++) and comparison between signed and unsigned is dangerous and surprising, so better avoided. If you use a decent compiler with warnings enabled there should be a diagnostic on that.

Note that the solution is not to use an unsiged as the index, because arithmetic between unsigned values is also apparently illogical (it's modulo arithmetic, and x-1 may be bigger than x). You instead should cast the size to an integer before using it. It may make some sense to use unsigned sizes and indexes (paying a LOT of attention to every expression you write) only if you're working on a 16 bit C++ implementation (16 bit was the reason for having unsigned values in sizes).

As a typical mistake that unsigned size may introduce consider:

void drawPolyline(const std::vector<P2d>& points)
{
    for (int i=0; i<points.size()-1; i++)
        drawLine(points[i], points[i+1]);
}

Here the bug is present because if you pass an empty points vector the value points.size()-1 will be a huge positive number, making you looping into a segfault. A working solution could be

for (int i=1; i<points.size(); i++)
    drawLine(points[i - 1], points[i]);

but I personally prefer to always remove unsinged-ness with int(v.size()).

PS: If you really don't want to think by to yourself to the implications and simply want an expert to tell you then consider that a quite a few world recognized C++ experts agree and expressed opinions on that unsigned values are a bad idea except for bit manipulations.

Discovering the ugliness of using iterators in the case of iterating up to second-last is left as an exercise for the reader.

Simple test, accessing http://localhost:8000/hello?foo=bar#this-is-not-sent-to-server

python -c "import SimpleHTTPServer;SimpleHTTPServer.test()"
Serving HTTP on 0.0.0.0 port 8000 ...
localhost - - [02/Jun/2009 12:48:47] code 404, message File not found
localhost - - [02/Jun/2009 12:48:47] "GET /hello?foo=bar HTTP/1.1" 404 -

The server receives the request without the #appendage - anything after the hash tag is simply an anchor lookup on the client.

You can find the anchor name used within the URL via javascript using, as an example:

<script>alert(window.location.hash);</script>

The parse_url() function in PHP can work if you already have the needed URL string including the fragment (http://codepad.org/BDqjtXix):

<?
echo parse_url("http://foo?bar#fizzbuzz",PHP_URL_FRAGMENT);
?>

Output: fizzbuzz

But I don't think PHP receives the fragment information because it's client-only.

You should clean the project , or restart Eclipse.

Java SE Development Kit 9 is not compatible with the Netbeans IDE 8.2.

My Solution:

1. Delete the current JDK 9
2. Install this previous trust version of JDK: JDK 8
3. Modify the following file: \Program Files\NetBeans 8.2\etc\netbeans.conf to the given folder path of the newly installed JDK 8: netbeans_jdkhome="C:\Program Files\Java\jdk1.8.0_151" (example)

I want to delete my sqlite db from document directory.I delete the sqlite db successfully by below answer

NSString *strFileName = @"sqlite";
NSFileManager *fileManager = [NSFileManager defaultManager];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];

NSArray *contents = [fileManager contentsOfDirectoryAtPath:documentsDirectory error:NULL];
NSEnumerator *enumerator = [contents objectEnumerator];
NSString *filename;
while ((filename = [enumerator nextObject])) {
    NSLog(@"The file name is - %@",[filename pathExtension]);
    if ([[filename pathExtension] isEqualToString:strFileName]) {
       [fileManager removeItemAtPath:[documentsDirectory stringByAppendingPathComponent:filename] error:NULL];
        NSLog(@"The sqlite is deleted successfully");
    }
}

Try to temporarily modify request.js and harcode everywhere rejectUnauthorized = true, but it would be better to get the certificate extended as a long-term solution.

Ternary operators are just shorthand. They compile into the equivalent if-else statement, meaning they will be exactly the same.

This error might also occur if you have require.js (requirejs) implemented and you did not wrap some lib that you are using inside

define(['jquery'], function( jQuery ) { ... lib function ... });

NOTE: you do not have to do this if this lib has AMD support. You can quickly check this by opening this lib and just ctrl+f "amd" :)

sed cannot match \n because the trailing newline is removed before the line is put into the pattern space but can match \r, so you can convert \r\n (dos) to \n (unix) by removing \r

sed -i 's/\r//g' file

Warning: this will change the original file

However, you cannot change from unix EOL to dos or old mac (\r) by this. More readings here:

How can I replace a newline (\n) using sed?

Simply, to enforce JAVA version to Ant in Eclipse:

Use RunAs option on Ant file then select External Tool Configuration in JRE tab define your JDK/JRE version you want to use.

It looks like you are trying to connect using TLSv1.2, which isn't widely implemented on servers. Does your destination support tls1.2?

I removed the .pub file, and it worked.

Input Dimension Clarified:

Not a direct answer, but I just realized the word Input Dimension could be confusing enough, so be wary:

It (the word dimension alone) can refer to:

a) The dimension of Input Data (or stream) such as # N of sensor axes to beam the time series signal, or RGB color channel (3): suggested word=> "InputStream Dimension"

b) The total number /length of Input Features (or Input layer) (28 x 28 = 784 for the MINST color image) or 3000 in the FFT transformed Spectrum Values, or

"Input Layer / Input Feature Dimension"

c) The dimensionality (# of dimension) of the input (typically 3D as expected in Keras LSTM) or (#RowofSamples, #of Senors, #of Values..) 3 is the answer.

"N Dimensionality of Input"

d) The SPECIFIC Input Shape (eg. (30,50,50,3) in this unwrapped input image data, or (30, 250, 3) if unwrapped Keras:

Keras has its input_dim refers to the Dimension of Input Layer / Number of Input Feature

model = Sequential()
model.add(Dense(32, input_dim=784))  #or 3 in the current posted example above
model.add(Activation('relu'))

In Keras LSTM, it refers to the total Time Steps

The term has been very confusing, is correct and we live in a very confusing world!!

I find one of the challenge in Machine Learning is to deal with different languages or dialects and terminologies (like if you have 5-8 highly different versions of English, then you need to very high proficiency to converse with different speakers). Probably this is the same in programming languages too.

After adding the JDK repo, before Installing you might want to run an update first so the repo can be added run apt update

an then continue with your installation sudo apt install adoptopenjdk-8-hotspot

The question mark is the conditional operator. The code means that if f==r then 1 is returned, otherwise, return 0. The code could be rewritten as

int qempty()
{
  if(f==r)
    return 1;
  else
    return 0;
}

which is probably not the cleanest way to do it, but hopefully helps your understanding.

this bellow solution worked for me

$result_encr="##Sƒ";

iconv("cp1252", "utf-8//IGNORE", $result_encr);

I found several posts telling me to run several gpg commands, but they didn't solve the problem because of two things. First, I was missing the debian-keyring package on my system and second I was using an invalid keyserver. Try different keyservers if you're getting timeouts!

Thus, the way I fixed it was:

apt-get install debian-keyring
gpg --keyserver pgp.mit.edu --recv-keys 1F41B907
gpg --armor --export 1F41B907 | apt-key add -

Then running a new "apt-get update" worked flawlessly!

First, I would check what i gets initialized to, to see if the elements returned by getElementsByName are what you think they are. Maybe split the problem by trying it with a hard-coded name like timetemp0, without the concatenation. You can also run the code through a browser debugger (FireBug, Chrome Dev Tools, IE Dev Tools).

Also, for your if-condition, this should suffice:

if (!timetemp[0].value) {
    // The value is empty.
}
else {
    // The value is not empty.
}

The empty string in Javascript is a falsey value, so the logical negation of that will get you into the if-block.

In angular 8:

//for catch:
import { catchError } from 'rxjs/operators';

//for throw:
import { Observable, throwError } from 'rxjs';

//and code should be written like this.

getEmployees(): Observable<IEmployee[]> {
    return this.http.get<IEmployee[]>(this.url).pipe(catchError(this.erroHandler));
  }

  erroHandler(error: HttpErrorResponse) {
    return throwError(error.message || 'server Error');
  }

Warning. I used setAllowsRubberBanding: in my app, and Apple rejected it, stating that non-public API functions are not allowed (cite: 3.3.1)

I followed brain storm's instructions and still wasn't getting different results - any new terminal windows would not recognize the mvn command. I don't know why, but breaking out the declarations in smaller chunks .bash_profile worked. As far as I can tell, I'm essentially doing the same thing he did. Here's what looks different in my .bash_profile:

JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_221.jdk/Contents/Home
export PATH JAVA_HOME
J2=$JAVA_HOME/bin
export PATH J2
M2_HOME=/usr/local/apache-maven/apache-maven-2.2.1
export PATH M2_HOME
M2=$M2_HOME/bin
export PATH M2

There is no definitive reason why unreachable statements must be not be allowed; other languages allow them without problems. For your specific need, this is the usual trick:

if (true) return;

It looks nonsensical, anyone who reads the code will guess that it must have been done deliberately, not a careless mistake of leaving the rest of statements unreachable.

Java has a little bit support for "conditional compilation"

http://java.sun.com/docs/books/jls/third_edition/html/statements.html#14.21

if (false) { x=3; }

does not result in a compile-time error. An optimizing compiler may realize that the statement x=3; will never be executed and may choose to omit the code for that statement from the generated class file, but the statement x=3; is not regarded as "unreachable" in the technical sense specified here.

The rationale for this differing treatment is to allow programmers to define "flag variables" such as:

static final boolean DEBUG = false;

and then write code such as:

if (DEBUG) { x=3; }

The idea is that it should be possible to change the value of DEBUG from false to true or from true to false and then compile the code correctly with no other changes to the program text.

This happens because java does not provide with Servlet-api.jar to import directly, so you need to import it externally like from Tomcat , for this we need to provide the classpath of lib folder from which we will be importing the Servlet and it's related Classes.

For Windows you can apply this method:

1. open command prompt
2. type

 javac -classpath "C:\Program Files\Apache Software Foundation\Tomcat 9.0\lib\*;" YourFileName.java 
     

3. It will take all jar files which needed for importing Servlet, HttpServlet ,etc and compile your java file.

4. You can add multiple classpaths Eg.

javac -classpath "C:\Users\Project1\WEB-INF\lib\*; C:\Program Files\Apache Software Foundation\Tomcat 9.0\lib\*;" YourFileName.java

You declared the constructor blowfish as this:

Blowfish(BlowfishAlgorithm algorithm);

So this line cannot exist (without further initialization later):

Blowfish _blowfish;

since you passed no parameter. It does not understand how to handle a parameter-less declaration of object "BlowFish" - you need to create another constructor for that.

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

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

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

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

Please note that I am using windows 10. some of the following may or may not applicable for other versions of windows or operating systems:

** Note 2: **
"the Graphviz bin file address on your system" can be C:\Program Files (x86)\Graphviz2.38\bin or any other path you installed Graphviz there.

We have problem not only with Graphviz but also with other external EXE files we want to use in Jupyter.
The reason is when jupyter wants to import a package it looks in working directory to find it and when it fails to find the package it returns such errors.
What we can do is tackle this is as follows:
1) check if the Graphviz is installed on your system and if not you can download and install it from:

https://graphviz.gitlab.io/_pages/Download/Download_windows.html
and then install it. When you installing Graphviz, keep in mind where (in which folder) you are installing it. If you see the above error when you use

import graphviz

then you have several options:

2) you can call the .exe file in the ipynb via

import os
os.environ["PATH"] += os.pathsep + r'the Graphviz bin file address on your system'

It is my experience that it is only works for the same ipynb that I am working with and every time that I open the notebook I need to call this lines of code.

3) If you want the Jupyter where to find the exe file, you need to set environmenal path.
In windows 10 you can do this going to:
Control Panel > System and Security > System > Advanced System Settings > Environment Variables > Path > Edit > New
and then add the "the Graphviz bin file address on your system" In windows 8 or lower go to :
Control Panel > System and Security > System > Advanced System Settings > Environment Variables
and then add the ;(semicolon) + "the Graphviz bin file address on your system" to the end of path string
Note: remember to restart your machine.

4) and even this does not work, define a variable going to:
Control Panel > System and Security > System > Advanced System Settings > Environment Variables and then:

Then define a variable as this:

Remember to name the variable Graphviz. At last restart your PC and hope it works.

This code is well-formed. You only have to pay attention that the definition of the template is visible at the point of instantiation. To quote the standard, § 14.7.2.4:

The definition of a non-exported function template, a non-exported member function template, or a non-exported member function or static data member of a class template shall be present in every translation unit in which it is explicitly instantiated.

There's a faster way to do that:

Arrays.hashCode(arr1) == Arrays.hashCode(arr2)

I use SyntaxHighlighter with my Blogger powered blog. The actual site is hosted on my own server rather than Blogger's though (Blogger has an option of ftping posts to your own site), but having your own domain and web hosting only costs a couple of dollars a month.

Select the Toggle Line Number Option from the View -> Toggle Line Number.

You can use react-native-rename package which will take of all the necessary changes of package name under

app/mainapplication.java

AndroidManifest.xml

but make sure to manually change the package name of all files under the java/com folder. because when i created an splash screen activity the old package name is not updated.

https://www.npmjs.com/package/react-native-rename

You don't have to always use ul elements to achieve that, you can use other elements too as seen below. Here there are 2 examples, one using div and one using select.

This examples demonstrates the basic functionality, but can be extended/enriched more. It is tested in linux only (iceweasel and chrome).

<!DOCTYPE html>
<html>
<head>
<meta charset='UTF-8'>
<style>
.drop_container
{
  position:relative;
  float:left;
}
.always_visible
{
  background-color:#FAFAFA;
  color:#333333;
  font-weight:bold;
  cursor:pointer;
  border:2px silver solid;
  margin:0px;
  margin-right:5px;
  font-size:14px;
  font-family:"Times New Roman", Times, serif;
}
.always_visible:hover + .hidden_container
{
  display:block;
  position:absolute;
  color:green;
}
.hidden_container
{
  display:none;
  border:1px gray solid;
  left:0px;
  background-color:#FAFAFA;
  padding:5px;
  z-index:1;
}
.hidden_container:hover
{
  display:block;
  position:absolute;
}
.link
{
  color:blue;
  white-space:nowrap;
  margin:3px;
  display:block;
}
.link:hover
{
  color:white;
  background-color:blue;
}
.line_1
{
  width:800px;
  border:1px tomato solid;
  padding:5px;
}
</style>      
</head>

<body>

<div class="line_1">
<div class="drop_container">
  <select class="always_visible" disabled><option>Select</option></select>
  <div class="hidden_container">
  <a href="http://www.google.gr" class="link">Option_ 1</a>
  <a href="http://www.google.gr" class="link">Option__ 2</a>
  <a href="http://www.google.gr" class="link">Option___ 3</a>
  <a href="http://www.google.gr" class="link">Option____ 4</a>
  </div>
</div>
<div class="drop_container">
  <select class="always_visible" disabled><option>Select</option></select>
  <div class="hidden_container">
  <a href="http://www.google.gr" class="link">____1</a>
  <a href="http://www.google.gr" class="link">___2</a>
  <a href="http://www.google.gr" class="link">__3</a>
  <a href="http://www.google.gr" class="link">_4</a>
  </div>
</div>
<div style="clear:both;"></div>
</div>

<br>

<div class="line_1">
 <div class="drop_container">
  <div class="always_visible">Select___</div>
  <div class="hidden_container">
  <a href="http://www.google.gr" class="link">Option_ 1</a>
  <a href="http://www.google.gr" class="link">Option__ 2</a>
  <a href="http://www.google.gr" class="link">Option___ 3</a>
  <a href="http://www.google.gr" class="link">Option____ 4</a>
  </div>
</div>
 <div class="drop_container">
  <div class="always_visible">Select___</div>
  <div class="hidden_container">
  <a href="http://www.google.gr" class="link">Option_ 1</a>
  <a href="http://www.google.gr" class="link">Option__ 2</a>
  <a href="http://www.google.gr" class="link">Option___ 3</a>
  <a href="http://www.google.gr" class="link">Option____ 4</a>
  </div>
</div>
<div style="clear:both;"></div>
</div>

</body>
</html>

Full Coding Structure

postgresql function

CREATE OR REPLACE FUNCTION admin.usp_itemdisplayid_byitemhead_select(
    item_head_list int[])
    RETURNS TABLE(item_display_id integer) 
    LANGUAGE 'sql'

    COST 100
    VOLATILE 
    ROWS 1000
    
AS $BODY$ 
        SELECT vii.item_display_id from admin.view_item_information as vii
where vii.item_head_id = ANY(item_head_list);
    $BODY$;

Model

public class CampaignCreator
    {
        public int item_display_id { get; set; }
        public List<int> pitem_head_id { get; set; }
    }

.NET CORE function

DynamicParameters _parameter = new DynamicParameters();
                _parameter.Add("@item_head_list",obj.pitem_head_id);
                
                string sql = "select * from admin.usp_itemdisplayid_byitemhead_select(@item_head_list)";
                response.data = await _connection.QueryAsync<CampaignCreator>(sql, _parameter);

Use the force, read the source (excerpt from the Priority and Level class compiled, TRACE level was introduced in version 1.2.12):

public final static int OFF_INT = Integer.MAX_VALUE;
public final static int FATAL_INT = 50000;
public final static int ERROR_INT = 40000;
public final static int WARN_INT  = 30000;
public final static int INFO_INT  = 20000;
public final static int DEBUG_INT = 10000;
public static final int TRACE_INT = 5000; 
public final static int ALL_INT = Integer.MIN_VALUE; 

or the log4j API for the Level class, which makes it quite clear.

When the library decides whether to print a certain statement or not, it computes the effective level of the responsible Logger object (based on configuration) and compares it with the LogEvent's level (depends on which method was used in the code – trace/debug/.../fatal). If LogEvent's level is greater or equal to the Logger's level, the LogEvent is sent to appender(s) – "printed". At the core, it all boils down to an integer comparison and this is where these constants come to action.

You can rewrite how your onToggleLoop method is called from your render() method.

render() {
    var shuffleClassName = this.state.toggleActive ? "player-control-icon active" : "player-control-icon"

return (
  <div className="player-controls">
    <FontAwesome
      className="player-control-icon"
      name='refresh'
      onClick={(event) => this.onToggleLoop(event)}
      spin={this.state.loopActive}
    />       
  </div>
    );
  }

The React documentation shows this pattern in making calls to functions from expressions in attributes.

You can simply 'add' the arrays:

>> $a = array(1, 2, 3);
array (
  0 => 1,
  1 => 2,
  2 => 3,
)
>> $b = array("a" => 1, "b" => 2, "c" => 3)
array (
  'a' => 1,
  'b' => 2,
  'c' => 3,
)
>> $a + $b
array (
  0 => 1,
  1 => 2,
  2 => 3,
  'a' => 1,
  'b' => 2,
  'c' => 3,
)

If you are plotting the same variables in both plots, the simplest way would be to combine the data frames into one, then use facet_wrap.

For your example:

big_df <- rbind(df1,df2)

big_df <- data.frame(big_df,Df = rep(c("df1","df2"),
times=c(nrow(df1),nrow(df2))))

ggplot(big_df,aes(x=x, y=y,colour=group)) 
+ geom_point(position=position_jitter(w=0.04,h=0.02),size=1.8) 
+ facet_wrap(~Df)

Another example using the diamonds data set. This shows that you can even make it work if you have only one variable common between your plots.

diamonds_reshaped <- data.frame(price = diamonds$price,
independent.variable = c(diamonds$carat,diamonds$cut,diamonds$color,diamonds$depth),
Clarity = rep(diamonds$clarity,times=4),
Variable.name = rep(c("Carat","Cut","Color","Depth"),each=nrow(diamonds)))

ggplot(diamonds_reshaped,aes(independent.variable,price,colour=Clarity)) + 
geom_point(size=2) + facet_wrap(~Variable.name,scales="free_x") + 
xlab("")

Only tricky thing with the second example is that the factor variables get coerced to numeric when you combine everything into one data frame. So ideally, you will do this mainly when all your variables of interest are the same type.

You opened a lot of connections and that's the issue. I think in your code, you did not close the opened connection.

A database bounce could temporarily solve, but will re-appear when you do consecutive execution. Also, it should be verified the number of concurrent connections to the database. If maximum DB processes parameter has been reached this is a common symptom.

Courtesy of this thread: https://community.oracle.com/thread/362226?tstart=-1

The error message explains it pretty well:

ValueError: The truth value of an array with more than one element is ambiguous. 
Use a.any() or a.all()

What should bool(np.array([False, False, True])) return? You can make several plausible arguments:

(1) True, because bool(np.array(x)) should return the same as bool(list(x)), and non-empty lists are truelike;

(2) True, because at least one element is True;

(3) False, because not all elements are True;

and that's not even considering the complexity of the N-d case.

So, since "the truth value of an array with more than one element is ambiguous", you should use .any() or .all(), for example:

>>> v = np.array([1,2,3]) == np.array([1,2,4])
>>> v
array([ True,  True, False], dtype=bool)
>>> v.any()
True
>>> v.all()
False

and you might want to consider np.allclose if you're comparing arrays of floats:

>>> np.allclose(np.array([1,2,3+1e-8]), np.array([1,2,3]))
True

Yes, you can do this. The knack you need is the concept that there are two ways of getting tables out of the table server. One way is ..

FROM TABLE A

The other way is

FROM (SELECT col as name1, col2 as name2 FROM ...) B

Notice that the select clause and the parentheses around it are a table, a virtual table.

So, using your second code example (I am guessing at the columns you are hoping to retrieve here):

SELECT a.attr, b.id, b.trans, b.lang
FROM attribute a
JOIN (
 SELECT at.id AS id, at.translation AS trans, at.language AS lang, a.attribute
 FROM attributeTranslation at
) b ON (a.id = b.attribute AND b.lang = 1)

Notice that your real table attribute is the first table in this join, and that this virtual table I've called b is the second table.

This technique comes in especially handy when the virtual table is a summary table of some kind. e.g.

SELECT a.attr, b.id, b.trans, b.lang, c.langcount
FROM attribute a
JOIN (
 SELECT at.id AS id, at.translation AS trans, at.language AS lang, at.attribute
 FROM attributeTranslation at
) b ON (a.id = b.attribute AND b.lang = 1)
JOIN (
 SELECT count(*) AS langcount,  at.attribute
 FROM attributeTranslation at
 GROUP BY at.attribute
) c ON (a.id = c.attribute)

See how that goes? You've generated a virtual table c containing two columns, joined it to the other two, used one of the columns for the ON clause, and returned the other as a column in your result set.

Here is the code I use in my C++ app.

Positive points :

• Works from console app
• Works from Windows service
• No delay required
• Does not close the current app

Negative points :

• The main console is lost and a new one is created (see FreeConsole)
• The console switching give strange results...

// Inspired from http://stackoverflow.com/a/15281070/1529139
// and http://stackoverflow.com/q/40059902/1529139
bool signalCtrl(DWORD dwProcessId, DWORD dwCtrlEvent)
{
    bool success = false;
    DWORD thisConsoleId = GetCurrentProcessId();
    // Leave current console if it exists
    // (otherwise AttachConsole will return ERROR_ACCESS_DENIED)
    bool consoleDetached = (FreeConsole() != FALSE);

    if (AttachConsole(dwProcessId) != FALSE)
    {
        // Add a fake Ctrl-C handler for avoid instant kill is this console
        // WARNING: do not revert it or current program will be also killed
        SetConsoleCtrlHandler(nullptr, true);
        success = (GenerateConsoleCtrlEvent(dwCtrlEvent, 0) != FALSE);
        FreeConsole();
    }

    if (consoleDetached)
    {
        // Create a new console if previous was deleted by OS
        if (AttachConsole(thisConsoleId) == FALSE)
        {
            int errorCode = GetLastError();
            if (errorCode == 31) // 31=ERROR_GEN_FAILURE
            {
                AllocConsole();
            }
        }
    }
    return success;
}

Usage example :

DWORD dwProcessId = ...;
if (signalCtrl(dwProcessId, CTRL_C_EVENT))
{
    cout << "Signal sent" << endl;
}

To go ahead and get a point out there, instead of repeatedly using these:

[A-Za-z0-9 _]
[A-Za-z0-9]

I have two (hopefully better) replacements for those two:

[\w ]
[^\W_]

The first one matches any word character (alphanumeric and _, as well as Unicode) and the space. The second matches anything that isn't a non-word character or an underscore (alphanumeric only, as well as Unicode).

If you don't want Unicode matching, then stick with the other answers. But these just look easier on the eyes (in my opinion). Taking the "preferred" answer as of this writing and using the shorter regexes gives us:

^[\w ]*[^\W_][\w ]*$

Perhaps more readable, perhaps less. Certainly shorter. Your choice.

EDIT:

Just as a note, I am assuming Perl-style regexes here. Your regex engine may or may not support things like \w and \W.

EDIT 2:

Tested mine with the JS regex tester that someone linked to and some basic examples worked fine. Didn't do anything extensive, just wanted to make sure that \w and \W worked fine in JS.

EDIT 3:

Having tried to test some Unicode with the JS regex tester site, I've discovered the problem: that page uses ISO instead of Unicode. No wonder my Japanese input didn't match. Oh well, that shouldn't be difficult to fix:

<meta http-equiv="Content-Type" content="text/html; charset=utf-8">

Or so. I don't know what should be done as far as JavaScript, but I'm sure it's not hard.

On iOS7, Apple introduced two new properties to UINavigationBar, 'backIndicatorTransitionMaskImage' and 'backIndicatorImage'.

By simply calling once:

[[UINavigationBar appearance] setBackIndicatorImage:[UIImage imageNamed:@"your_image"]];
[[UINavigationBar appearance] setBackIndicatorTransitionMaskImage:[UIImage imageNamed:@"your_image_mask"]];

It will render a custom image instead of the default chevron glyph, inheriting the keyWindow's tint color.

And for removing the title, I'll suggest Kamaros's answer. Remember to call this code on the view controller that's pushing your new view controller. Removing the title text of an iOS UIBarButtonItem

you can use dive to view the image content interactively with TUI

https://github.com/wagoodman/dive

IEnumerable introduces quite a number of extensions to it which helps you to pass your own delegate and invoking the resultant from the IEnumerable back. Most of them are by nature of type Func

The Func takes an argument T and returns TResult.

In case of

Where - Func : So it takes IEnumerable of T and Returns a bool. The where will ultimately returns the IEnumerable of T's for which Func returns true.

So if you have 1,5,3,6,7 as IEnumerable and you write .where(r => r<5) it will return a new IEnumerable of 1,3.

Any - Func basically is similar in signature but returns true only when any of the criteria returns true for the IEnumerable. In our case, it will return true as there are few elements present with r<5.

Exists - Predicate on the other hand will return true only when any one of the predicate returns true. So in our case if you pass .Exists(r => 5) will return true as 5 is an element present in IEnumerable.

in BS3 you can put

  <?php
                  $checked="hola";
                  $exenta = $datosOrdenCompra[0]['exenta'];
                  var_dump($datosOrdenCompra[0]['exenta']);
                  if(isset($datosOrdenCompra[0]['exenta']) and $datosOrdenCompra[0]['exenta'] == 1){

                      $checked="on";

                  }else{
                    $checked="off";
                  }

              ?>
              <input type="checkbox" id="exenta" name="exenta" <?php echo $checked;?> > <span class="label-text"> Exenta</span>

Please Note the usage of isset($datosOrdenCompra[0]['exenta'])

From the docs:

Another common operation is the use of boolean vectors to filter the data. The operators are: | for or, & for and, and ~ for not. These must be grouped by using parentheses.

http://pandas.pydata.org/pandas-docs/version/0.15.2/indexing.html#boolean-indexing

Try:

alldata_balance = alldata[(alldata[IBRD] !=0) | (alldata[IMF] !=0)]

.gitignore will prevent untracked files from being added (without an add -f) to the set of files tracked by git, however git will continue to track any files that are already being tracked.

To stop tracking a file you need to remove it from the index. This can be achieved with this command.

git rm --cached <file>

If you want to remove a whole folder, you need to remove all files in it recursively.

git rm -r --cached <folder>

The removal of the file from the head revision will happen on the next commit.

WARNING: While this will not remove the physical file from your local, it will remove the files from other developers machines on next git pull.

You have to replace string line

QString line = in.readLine();

into while:

QFile file("/home/hamad/lesson11.txt");
if(!file.open(QIODevice::ReadOnly)) {
    QMessageBox::information(0, "error", file.errorString());
}

QTextStream in(&file);

while(!in.atEnd()) {
    QString line = in.readLine();    
    QStringList fields = line.split(",");    
    model->appendRow(fields);    
}

file.close();

My problem was due to a LOW MTU over a VPN connection.

netsh interface ipv4 show inter

Idx  Met   MTU   State        Name
---  ---  -----  -----------  -------------------
  1 4275 4294967295  connected    Loopback Pseudo-Interface 1
 10 4250   **1300**  connected    Wireless Network Connection
 31   25   1400  connected    Remote Access to XYZ Network

Fix: netsh interface ipv4 set interface "Wireless Network Connection" mtu=1400

It may be an issue over a non-VPN connection also...

The gdi32 library is already installed on your computer, few programs will run without it. Your compiler will (if installed properly) normally come with an import library, which is what the linker uses to make a binding between your program and the file in the system. (In the unlikely case that your compiler does not come with import libraries for the system libs, you will need to download the Microsoft Windows Platform SDK.)

To link with gdi32:

This will reliably work with MinGW-gcc for all system libraries (it should work if you use any other compiler too, but I can't talk about things I've not tried). You can also write the library's full name, but writing libgdi32.a has no advantage over gdi32 other than being more type work.
If it does not work for some reason, you may have to provide a different name (for example the library is named gdi32.lib for MSVC).

For libraries in some odd locations or project subfolders, you will need to provide a proper pathname (click on the "..." button for a file select dialog).

First i tried with this sample code:

$(document).ready(function(){ 
     $('#upload-file').click(); 
});

It didn't work for me. Then after, tried with this

$(document).ready(function(){ 
     $('#upload-file')[0].click(); 
});

No change. At last, tried with this

$(document).ready(function(){ 
     $('#upload-file')[0].click(function(){
     }); 
});

Solved my problem. Helpful for anyone.

Inside your makefile:

target:
    if test -d dir; then echo "hello world!"; else mkdir dir; fi

Hide #categories initially

#categories {
    display: none;
}

and then, using JQuery UI, animate the Menu slowly

var duration = 'slow';

$('#cat_icon').click(function () {
    $('#cat_icon').hide(duration, function() {
        $('#categories').show('slide', {direction: 'left'}, duration);});
});
$('.panel_title').click(function () {
    $('#categories').hide('slide', {direction: 'left'}, duration, function() {
        $('#cat_icon').show(duration);});
});

JSFiddle

You can use any time in milliseconds as well

var duration = 2000;

If you want to hide on class='panel_item' too, select both panel_title and panel_item

$('.panel_title,.panel_item').click(function () {
    $('#categories').hide('slide', {direction: 'left'}, duration, function() {
        $('#cat_icon').show(duration);});
});

JSFiddle

And if you want to add a row, you can use a dictionary:

df = pd.DataFrame()
df = df.append({'name': 'Zed', 'age': 9, 'height': 2}, ignore_index=True)

which gives you:

   age  height name
0    9       2  Zed

You can use virtualenv

# Use this to create your temporary python "install"
# (Assuming that is the correct path to the python interpreter you want to use.)
virtualenv -p /usr/bin/python2.7 --distribute temp-python

# Type this command when you want to use your temporary python.
# While you are using your temporary python you will also have access to a temporary pip,
# which will keep all packages installed with it separate from your main python install.
# A shorter version of this command would be ". temp-python/bin/activate"
source temp-python/bin/activate

# When you no longer wish to use you temporary python type
deactivate

Enjoy!

In this code's thread creation, the address of a function pointer is being passed. The original pthread_create(&some_thread, NULL, &print_the_arguments, (void *)&args) != 0

It should read as pthread_create(&some_thread, NULL, print_the_arguments, (void *) &args)

A good way to remember is that all of this function's arguments should be addresses.

some_thread is declared statically, so the address is sent properly using &.

I would create a pthread_attr_t variable, then use pthread_attr_init() on it and pass that variable's address. But, passing a NULL pointer is valid as well.

The & in front of the function label is what is causing the issue here. The label used is already a void* to a function, so only the label is necessary.

To say != 0 with the final argument would seem to cause undetermined behavior. Adding this means that a boolean is being passed instead of a reference.

Akash Agrawal's answer is also part of the solution to this code's problem.

>>> a='2010-01-31'
>>> a.split('-')
['2010', '01', '31']
>>> year,month,date=a.split('-')
>>> year
'2010'
>>> month
'01'
>>> date
'31'

None of the css trick worked for me (in my case the fb-like box was pulled right with "float:right"). However, what worked without any additional tricks is an IFRAME version of the button code. I.e.:

<iframe src="//www.facebook.com/plugins/like.php?href=..." 
        scrolling="no" frameborder="0" 
        style="border:none; overflow:hidden; width:71px; height:21px;" 
        allowTransparency="true">
</iframe>

(Note custom width in style, and no need to include additional javascript.)

here is my solution, it searches for duplicates based on object.prop and when it finds a duplicate object it replaces its value in array1 with array2 value

function mergeSecondArrayIntoFirstArrayByProperty(array1, array2) {
    for (var i = 0; i < array2.length; i++) {
        var found = false;
        for (var j = 0; j < array1.length; j++) {
            if (array2[i].prop === array1[j].prop) { // if item exist in array1
                array1[j] = array2[i]; // replace it in array1 with array2 value
                found = true;
            }
        }
        if (!found) // if item in array2 not found in array1, add it to array1
            array1.push(array2[i]);

    }
    return array1;
}

Just for the sake of completeness, I would suggest using the InnerHTML way as well - even though I would not call it the best way...

document.getElementById("image-holder").innerHTML = "<img src='image.png' alt='The Image' />";

By the way, innerHTML is not that bad

I found that the HTTP interceptor method works pretty nicely, and allows additional flexibility & control. Additionally, you can cache-bust for each production release by using a release hash as the buster variable.

Here is what the dev cachebusting method looks like using Date.

app.factory('cachebustInjector', function(conf) {   
    var cachebustInjector = {
        request: function(config) {    
            // new timestamp will be appended to each new partial .html request to prevent caching in a dev environment               
            var buster = new Date().getTime();

            if (config.url.indexOf('static/angular_templates') > -1) {
                config.url += ['?v=', buster].join('');
            }
            return config;
        }
    };
    return cachebustInjector;
});

app.config(['$httpProvider', function($httpProvider) {
    $httpProvider.interceptors.push('cachebustInjector');
}]);

If you need to store null characters in text fields and don't want to change your data type other than text then you can follow my solution too:

Before insert:

myValue = myValue.replaceAll("\u0000", "SomeVerySpecialText")

After select:

myValue = myValue.replaceAll("SomeVerySpecialText","\u0000")

I've used "null" as my SomeVerySpecialText which I am sure that there will be no any "null" string in my values at all.

Shorter code with ES6

objArray.sort((a, b) => a.DepartmentName.toLowerCase().localeCompare(b.DepartmentName.toLowerCase()))

This is generic code for configuration collection :

public class GenericConfigurationElementCollection<T> :   ConfigurationElementCollection, IEnumerable<T> where T : ConfigurationElement, new()
{
    List<T> _elements = new List<T>();

    protected override ConfigurationElement CreateNewElement()
    {
        T newElement = new T();
        _elements.Add(newElement);
        return newElement;
    }

    protected override object GetElementKey(ConfigurationElement element)
    {
        return _elements.Find(e => e.Equals(element));
    }

    public new IEnumerator<T> GetEnumerator()
    {
        return _elements.GetEnumerator();
    }
}

After you have GenericConfigurationElementCollection, you can simple use it in the config section (this is an example from my Dispatcher):

public class  DispatcherConfigurationSection: ConfigurationSection
{
    [ConfigurationProperty("maxRetry", IsRequired = false, DefaultValue = 5)]
    public int MaxRetry
    {
        get
        {
            return (int)this["maxRetry"];
        }
        set
        {
            this["maxRetry"] = value;
        }
    }

    [ConfigurationProperty("eventsDispatches", IsRequired = true)]
    [ConfigurationCollection(typeof(EventsDispatchConfigurationElement), AddItemName = "add", ClearItemsName = "clear", RemoveItemName = "remove")]
    public GenericConfigurationElementCollection<EventsDispatchConfigurationElement> EventsDispatches
    {
        get { return (GenericConfigurationElementCollection<EventsDispatchConfigurationElement>)this["eventsDispatches"]; }
    }
}

The Config Element is config Here:

public class EventsDispatchConfigurationElement : ConfigurationElement
{
    [ConfigurationProperty("name", IsRequired = true)]
    public string Name
    {
        get
        {
            return (string) this["name"];
        }
        set
        {
            this["name"] = value;
        }
    }
}

The config file would look like this:

<?xml version="1.0" encoding="utf-8" ?>
  <dispatcherConfigurationSection>
    <eventsDispatches>
      <add name="Log" ></add>
      <add name="Notification" ></add>
      <add name="tester" ></add>
    </eventsDispatches>
  </dispatcherConfigurationSection>

Hope it help !

I use ? (0x25B8) for the right arrow, often to show a collapsed list; and I pair it with ? (0x25BE) to show the list opened up. Both are unobtrusive.

Simply use the "utf-8-sig" codec:

fp = open("file.txt")
s = fp.read()
u = s.decode("utf-8-sig")

That gives you a unicode string without the BOM. You can then use

s = u.encode("utf-8")

to get a normal UTF-8 encoded string back in s. If your files are big, then you should avoid reading them all into memory. The BOM is simply three bytes at the beginning of the file, so you can use this code to strip them out of the file:

import os, sys, codecs

BUFSIZE = 4096
BOMLEN = len(codecs.BOM_UTF8)

path = sys.argv[1]
with open(path, "r+b") as fp:
    chunk = fp.read(BUFSIZE)
    if chunk.startswith(codecs.BOM_UTF8):
        i = 0
        chunk = chunk[BOMLEN:]
        while chunk:
            fp.seek(i)
            fp.write(chunk)
            i += len(chunk)
            fp.seek(BOMLEN, os.SEEK_CUR)
            chunk = fp.read(BUFSIZE)
        fp.seek(-BOMLEN, os.SEEK_CUR)
        fp.truncate()

It opens the file, reads a chunk, and writes it out to the file 3 bytes earlier than where it read it. The file is rewritten in-place. As easier solution is to write the shorter file to a new file like newtover's answer. That would be simpler, but use twice the disk space for a short period.

As for guessing the encoding, then you can just loop through the encoding from most to least specific:

def decode(s):
    for encoding in "utf-8-sig", "utf-16":
        try:
            return s.decode(encoding)
        except UnicodeDecodeError:
            continue
    return s.decode("latin-1") # will always work

An UTF-16 encoded file wont decode as UTF-8, so we try with UTF-8 first. If that fails, then we try with UTF-16. Finally, we use Latin-1 — this will always work since all 256 bytes are legal values in Latin-1. You may want to return None instead in this case since it's really a fallback and your code might want to handle this more carefully (if it can).

If you just need this for debugging to see how the XML looks like, then instead of print(xml.etree.ElementTree.tostring(e)) you can use dump like this:

xml.etree.ElementTree.dump(e)

And this works both with Element and ElementTree objects as e, so there should be no need for getroot.

The documentation of dump says:

xml.etree.ElementTree.dump(elem)

Writes an element tree or element structure to sys.stdout. This function should be used for debugging only.

The exact output format is implementation dependent. In this version, it’s written as an ordinary XML file.

elem is an element tree or an individual element.

Changed in version 3.8: The dump() function now preserves the attribute order specified by the user.

For me I usually send back an HttpResponseException and set the status code accordingly depending on the exception thrown and if the exception is fatal or not will determine whether I send back the HttpResponseException immediately.

At the end of the day it's an API sending back responses and not views, so I think it's fine to send back a message with the exception and status code to the consumer. I currently haven't needed to accumulate errors and send them back as most exceptions are usually due to incorrect parameters or calls etc.

An example in my app is that sometimes the client will ask for data, but there isn't any data available so I throw a custom NoDataAvailableException and let it bubble to the Web API app, where then in my custom filter which captures it sending back a relevant message along with the correct status code.

I am not 100% sure on what's the best practice for this, but this is working for me currently so that's what I'm doing.

Update:

Since I answered this question a few blog posts have been written on the topic:

https://weblogs.asp.net/fredriknormen/asp-net-web-api-exception-handling

(this one has some new features in the nightly builds) https://docs.microsoft.com/archive/blogs/youssefm/error-handling-in-asp-net-webapi

Update 2

Update to our error handling process, we have two cases:

1. For general errors like not found, or invalid parameters being passed to an action we return a HttpResponseException to stop processing immediately. Additionally for model errors in our actions we will hand the model state dictionary to the Request.CreateErrorResponse extension and wrap it in a HttpResponseException. Adding the model state dictionary results in a list of the model errors sent in the response body.

2. For errors that occur in higher layers, server errors, we let the exception bubble to the Web API app, here we have a global exception filter which looks at the exception, logs it with ELMAH and tries to make sense of it setting the correct HTTP status code and a relevant friendly error message as the body again in a HttpResponseException. For exceptions that we aren't expecting the client will receive the default 500 internal server error, but a generic message due to security reasons.

Update 3

Recently, after picking up Web API 2, for sending back general errors we now use the IHttpActionResult interface, specifically the built in classes for in the System.Web.Http.Results namespace such as NotFound, BadRequest when they fit, if they don't we extend them, for example a NotFound result with a response message:

public class NotFoundWithMessageResult : IHttpActionResult
{
    private string message;

    public NotFoundWithMessageResult(string message)
    {
        this.message = message;
    }

    public Task<HttpResponseMessage> ExecuteAsync(CancellationToken cancellationToken)
    {
        var response = new HttpResponseMessage(HttpStatusCode.NotFound);
        response.Content = new StringContent(message);
        return Task.FromResult(response);
    }
}

You didn't mention the fancy indexing capabilities of dataframes, e.g.:

>>> df = pd.DataFrame({"class":[1,1,1,2,2], "value":[1,2,3,4,5]})
>>> df[df["class"]==1].sum()
class    3
value    6
dtype: int64
>>> df[df["class"]==1].sum()["value"]
6
>>> df[df["class"]==1].count()["value"]
3

You could replace df["class"]==1by another condition.

If your system is using dpkg and apt (debian, ubuntu, etc), try running the following commands in that order (be careful with the sudo rm commands):

sudo apt-get -f install
sudo dpkg -P phpmyadmin  
sudo rm -vf /etc/apache2/conf.d/phpmyadmin.conf
sudo rm -vfR /usr/share/phpmyadmin
sudo service apache2 restart

This one worked for me, for MySQL: (Application properties)

spring.datasource.url=jdbc:mysql://localhost:3306/db?useSSL=false&useUnicode=true&useJDBCCompliantTimezoneShift=true&
useLegacyDatetimeCode=false&serverTimezone=UTC
spring.datasource.username=root
spring.datasource.password=admin
spring.jpa.hibernate.ddl-auto=create
spring.jpa.show-sql=true

You've got the ternary syntax x if x else '' - is that what you're after?

How about creating two dataframes, each with different data types for their columns, and then appending them together?

d1 = pd.DataFrame(columns=[ 'float_column' ], dtype=float)
d1 = d1.append(pd.DataFrame(columns=[ 'string_column' ], dtype=str))

Results

In[8}:  d1.dtypes
Out[8]: 
float_column     float64
string_column     object
dtype: object

After the dataframe is created, you can populate it with floating point variables in the 1st column, and strings (or any data type you desire) in the 2nd column.

may its so late but the response useful for others so : Sometimes, when you don't specify a server or servlet container at the creation of the project, NetBeans fails to create a context.xml file.

1. In your project under Web Pages, create a folder called META-INF.

Do this by right mouse button clicking on Web pages, and select:

New->Other->Other->File Folder

Name the folder META-INF. Case is important, even on Windows.

1. Create a file called context.xml in the META-INF folder.

Do this by right mouse button clicking on the new META-INF folder, and select:

New->Other->XML->XML Document

Name it context (NetBeans adds the .xml) Select Well-formed Document Press Finish

1. Edit the new document (context.xml), and add the following:

   <?xml version="1.0" encoding="UTF-8"?> 
   <Context antiJARLocking="true" path="/app-name"/> 
   

Replace app-name with the name of your application.

Now your in-place deployment should work. If not, make sure that the file can be read by everyone.

The context.xml file is specific to Tomcat. For more information about that file, see the Tomcat documentation at tomcat.apache.org.

nohup catches the hangup signal (see man 7 signal) while the ampersand doesn't (except the shell is confgured that way or doesn't send SIGHUP at all).

Normally, when running a command using & and exiting the shell afterwards, the shell will terminate the sub-command with the hangup signal (kill -SIGHUP <pid>). This can be prevented using nohup, as it catches the signal and ignores it so that it never reaches the actual application.

In case you're using bash, you can use the command shopt | grep hupon to find out whether your shell sends SIGHUP to its child processes or not. If it is off, processes won't be terminated, as it seems to be the case for you. More information on how bash terminates applications can be found here.

There are cases where nohup does not work, for example when the process you start reconnects the SIGHUP signal, as it is the case here.

Brendan is correct. You can edit the Select command to edit a filtered list of records. For instance "WHERE dept_no = 200".

A numpy-only solution for any number of classes that doesn't require looping:

import numpy as np

classes = 3
true = np.random.randint(0, classes, 50)
pred = np.random.randint(0, classes, 50)

np.bincount(true * classes + pred).reshape((classes, classes))

On the Server, to Serialize/Deserialize json to custom objects:

public static string Serialize<T>(T obj)
{
    DataContractJsonSerializer serializer = new DataContractJsonSerializer(obj.GetType());
    MemoryStream ms = new MemoryStream();
    serializer.WriteObject(ms, obj);
    string retVal = Encoding.UTF8.GetString(ms.ToArray());
    return retVal;
}

public static T Deserialize<T>(string json)
{
    T obj = Activator.CreateInstance<T>();
    MemoryStream ms = new MemoryStream(Encoding.Unicode.GetBytes(json));
    DataContractJsonSerializer serializer = new DataContractJsonSerializer(obj.GetType());
    obj = (T)serializer.ReadObject(ms);
    ms.Close();
    return obj;
}

Specifically to answer "is there a one line way of doing this?"

if 'key' in my_dict: del my_dict['key']

...well, you asked ;-)

You should consider, though, that this way of deleting an object from a dict is not atomic—it is possible that 'key' may be in my_dict during the if statement, but may be deleted before del is executed, in which case del will fail with a KeyError. Given this, it would be safest to either use dict.pop or something along the lines of

try:
    del my_dict['key']
except KeyError:
    pass

which, of course, is definitely not a one-liner.

Binary releases contain computer readable version of the application, meaning it is compiled. Source releases contain human readable version of the application, meaning it has to be compiled before it can be used.

A scalar always holds a single element. Whatever is in a scalar variable is always a scalar. A reference is a scalar value.

If you want to know if it is a reference, you can use ref. If you want to know the reference type, you can use the reftype routine from Scalar::Util.

If you want to know if it is an object, you can use the blessed routine from Scalar::Util. You should never care what the blessed package is, though. UNIVERSAL has some methods to tell you about an object: if you want to check that it has the method you want to call, use can; if you want to see that it inherits from something, use isa; and if you want to see it the object handles a role, use DOES.

If you want to know if that scalar is actually just acting like a scalar but tied to a class, try tied. If you get an object, continue your checks.

If you want to know if it looks like a number, you can use looks_like_number from Scalar::Util. If it doesn't look like a number and it's not a reference, it's a string. However, all simple values can be strings.

If you need to do something more fancy, you can use a module such as Params::Validate.

No, it is not okay to put a link element in the body tag. See the specification (links to the HTML4.01 specs, but I believe it is true for all versions of HTML):

“This element defines a link. Unlike A, it may only appear in the HEAD section of a document, although it may appear any number of times.”

You can filter out rows that contain a NULL value in a specific column:

SELECT col1, col2, ..., coln
FROM yourtable
WHERE somecolumn IS NOT NULL

If you want to filter out rows that contain a null in any column then try this:

SELECT col1, col2, ..., coln
FROM yourtable
WHERE col1 IS NOT NULL
AND col2 IS NOT NULL
-- ...
AND coln IS NOT NULL

Update: Based on your comments, perhaps you want this?

SELECT * FROM
(
    SELECT col1 AS col FROM yourtable
    UNION
    SELECT col2 AS col FROM yourtable
    UNION
    -- ...
    UNION
    SELECT coln AS col FROM yourtable
) T1
WHERE col IS NOT NULL

And I agre with Martin that if you need to do this then you should probably change your database design.

Won't days * 24 * 60 * 60 * 1000 suffice?

In Addition

When migration you deployed long ago does not let you migrate new one.

What happened is, I work in a larger Rails app with more than a thousand of migration files. And, it takes a month for us to ship a medium-sized feature. I was working on a feature and I had deployed a migration a month ago then in the review process the structure of migration and filename changed, now I try to deploy my new code, the build failed saying

ActiveRecord::StatementInvalid: PG::DuplicateColumn: ERROR:  column "my_new_field" of relation "accounts" already exists

none of the above-mentioned solutions worked for me because the old migration file was missing and the field I intended to create in my new migration file already existed in the DB. The only solution that worked for me is:

1. I scped the file to the server
2. I opened the rails console
3. I required the file in the IRB session
4. then AddNewMyNewFieldToAccounts.new.down

then I could run the deploy build again.

Hope it helps you too.

The answer to the question specifically asked is no. But have you been looking at mocking frameworks? I use MOQ but there's millions of them out there and they allow you to implement/stub (partially or fully) interfaces in-line. Eg.

public void ThisWillWork()
{
    var source = new DummySource[0];
    var mock = new Mock<DummyInterface>();

    mock.SetupProperty(m => m.A, source.Select(s => s.A));
    mock.SetupProperty(m => m.B, source.Select(s => s.C + "_" + s.D));

    DoSomethingWithDummyInterface(mock.Object);
}

We can use map function

print map(str, EmployeeList)

Here is the answer to the question here

Actually we have to get it from the sharable ContentProvider of Camera Application.

EDIT . Copying answer that worked for me

private String getRealPathFromURI(Uri contentUri) {
String[] proj = { MediaStore.Images.Media.DATA };
CursorLoader loader = new CursorLoader(mContext, contentUri, proj, null, null, null);
Cursor cursor = loader.loadInBackground();
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
String result = cursor.getString(column_index);
cursor.close();
return result;

}

Only load jQuery itself in the head, via CDN of course.

Why? In some scenarios you might include a partial template (e.g. ajax login form snippet) with embedded jQuery dependent code; if jQuery is loaded at page bottom, you get a "$ is not defined" error, nice.

There are ways to workaround this of course (such as not embedding any JS and appending to a load-at-bottom js bundle), but why lose the freedom of lazily loaded js, of being able to place jQuery dependent code anywhere you please? Javascript engine doesn't care where the code lives in the DOM so long as dependencies (like jQuery being loaded) are satisfied.

For your common/shared js files, yes, place them before </body>, but for the exceptions, where it really just makes sense application maintenance-wise to stick a jQuery dependent snippet or file reference right there at that point in the html, do so.

There is no performance hit loading jquery in the head; what browser on the planet does not already have jQuery CDN file in cache?

Much ado about nothing, stick jQuery in the head and let your js freedom reign.

Player.cpp require the definition of Ball class. So simply add #include "Ball.h"

Player.cpp:

#include "Player.h"
#include "Ball.h"

void Player::doSomething(Ball& ball) {
    ball.ballPosX += 10;                   // incomplete type error occurs here.
}

While this does not answer the question asked, it answers a related question that many people have had:

x <-c(1,2,3)
y <-c(100,200,300)
x_name <- "cond"
y_name <- "rating"

df <- data.frame(x,y)
names(df) <- c(x_name,y_name)
print(df)

  cond rating
1    1    100
2    2    200
3    3    300

This solved my 720 problem. The idea is to change the driver of the faulty WAN to another network adaptar driver, and then we are able to uninstall the WAN device and then reboot the system.

https://forums.lenovo.com/t5/Windows-8-and-8-1/SOLVED-WAN-Miniport-2-yellow-exclamation-mark-in-Device-Manager/td-p/1051981

For Mac EI caption/Mac Sierra, Chrome extension folders were located at

/Users/$USER/Library/Application\ Support/Google/Chrome/Profile*/Extensions/

It feels like that HEAD is just a tag for the last commit that you checked out.

This can be the tip of a specific branch (such as "master") or some in-between commit of a branch ("detached head")

If you're talking about a web application, you should use the getRealPath from a ServletContext object.

Example:

public class MyServlet extends Servlet {
    public void doGet(HttpServletRequest req, HttpServletResponse resp) 
              throws ServletException, IOException{
         String webAppPath = getServletContext().getRealPath("/");
    }
}

Hope this helps.

So this is both simple but a slightly more complicated topic than it seems.

First off there are usually to conflated questions here

1. How to get element relative mouse coordinates

2. How to get canvas pixel mouse coordinates for the 2D Canvas API or WebGL

so, answers

How to get element relative mouse coordinates

Whether or not the element is a canvas getting element relative mouse coordinates is the same for all elements.

There are 2 simple answers to the question "How to get canvas relative mouse coordinates"

Simple answer #1 use offsetX and offsetY

canvas.addEventListner('mousemove', (e) => {
  const x = e.offsetX;
  const y = e.offsetY;
});

This answer works in Chrome, Firefox, and Safari. Unlike all the other event values offsetX and offsetY take CSS transforms into account.

The biggest problem with offsetX and offsetY is as of 2019/05 they don't exist on touch events and so can't be used with iOS Safari. They do exist on Pointer Events which exist in Chrome and Firefox but not Safari although apparently Safari is working on it.

Another issue is the events must be on the canvas itself. If you put them on some other element or the window you can not later choose the canvas to be your point of reference.

Simple answer #2 use clientX, clientY and canvas.getBoundingClientRect

If you don't care about CSS transforms the next simplest answer is to call canvas. getBoundingClientRect() and subtract the left from clientX and top from clientY as in

canvas.addEventListener('mousemove', (e) => {
  const rect = canvas.getBoundingClientRect();
  const x = e.clientX - rect.left;
  const y = e.clientY - rect.top;
});

This will work as long as there are no CSS transforms. It also works with touch events and so will work with Safari iOS

canvas.addEventListener('touchmove', (e) => {
  const rect = canvas. getBoundingClientRect();
  const x = e.touches[0].clientX - rect.left;
  const y = e.touches[0].clientY - rect.top;
});

How to get canvas pixel mouse coordinates for the 2D Canvas API

For this we need to take the values we got above and convert from the size the canvas is displayed to the number of pixels in the canvas itself

with canvas.getBoundingClientRect and clientX and clientY

canvas.addEventListener('mousemove', (e) => {
  const rect = canvas.getBoundingClientRect();
  const elementRelativeX = e.clientX - rect.left;
  const elementRelativeY = e.clientY - rect.top;
  const canvasRelativeX = elementRelativeX * canvas.width / rect.width;
  const canvasRelativeY = elementRelativeY * canvas.height / rect.height;
});

or with offsetX and offsetY

canvas.addEventListener('mousemove', (e) => {
  const elementRelativeX = e.offsetX;
  const elementRelativeY = e.offsetY;
  const canvasRelativeX = elementRelativeX * canvas.width / canvas.clientWidth;
  const canvasRelativeY = elementRelativeY * canvas.height / canvas.clientHeight;
});

Note: In all cases do not add padding or borders to the canvas. Doing so will massively complicate the code. Instead of you want a border or padding surround the canvas in some other element and add the padding and or border to the outer element.

Working example using event.offsetX, event.offsetY

[...document.querySelectorAll('canvas')].forEach((canvas) => {
  const ctx = canvas.getContext('2d');
  ctx.canvas.width  = ctx.canvas.clientWidth;
  ctx.canvas.height = ctx.canvas.clientHeight;
  let count = 0;

  function draw(e, radius = 1) {
    const pos = {
      x: e.offsetX * canvas.width  / canvas.clientWidth,
      y: e.offsetY * canvas.height / canvas.clientHeight,
    };
    document.querySelector('#debug').textContent = count;
    ctx.beginPath();
    ctx.arc(pos.x, pos.y, radius, 0, Math.PI * 2);
    ctx.fillStyle = hsl((count++ % 100) / 100, 1, 0.5);
    ctx.fill();
  }

  function preventDefault(e) {
    e.preventDefault();
  }

  if (window.PointerEvent) {
    canvas.addEventListener('pointermove', (e) => {
      draw(e, Math.max(Math.max(e.width, e.height) / 2, 1));
    });
    canvas.addEventListener('touchstart', preventDefault, {passive: false});
    canvas.addEventListener('touchmove', preventDefault, {passive: false});
  } else {
    canvas.addEventListener('mousemove', draw);
    canvas.addEventListener('mousedown', preventDefault);
  }
});

function hsl(h, s, l) {
  return `hsl(${h * 360 | 0},${s * 100 | 0}%,${l * 100 | 0}%)`;
}

.scene {
  width: 200px;
  height: 200px;
  perspective: 600px;
}

.cube {
  width: 100%;
  height: 100%;
  position: relative;
  transform-style: preserve-3d;
  animation-duration: 16s;
  animation-name: rotate;
  animation-iteration-count: infinite;
  animation-timing-function: linear;
}

@keyframes rotate {
  from { transform: translateZ(-100px) rotateX(  0deg) rotateY(  0deg); }
  to   { transform: translateZ(-100px) rotateX(360deg) rotateY(720deg); }
}

.cube__face {
  position: absolute;
  width: 200px;
  height: 200px;
  display: block;
}

.cube__face--front  { background: rgba(255, 0, 0, 0.2); transform: rotateY(  0deg) translateZ(100px); }
.cube__face--right  { background: rgba(0, 255, 0, 0.2); transform: rotateY( 90deg) translateZ(100px); }
.cube__face--back   { background: rgba(0, 0, 255, 0.2); transform: rotateY(180deg) translateZ(100px); }
.cube__face--left   { background: rgba(255, 255, 0, 0.2); transform: rotateY(-90deg) translateZ(100px); }
.cube__face--top    { background: rgba(0, 255, 255, 0.2); transform: rotateX( 90deg) translateZ(100px); }
.cube__face--bottom { background: rgba(255, 0, 255, 0.2); transform: rotateX(-90deg) translateZ(100px); }

<div class="scene">
  <div class="cube">
    <canvas class="cube__face cube__face--front"></canvas>
    <canvas class="cube__face cube__face--back"></canvas>
    <canvas class="cube__face cube__face--right"></canvas>
    <canvas class="cube__face cube__face--left"></canvas>
    <canvas class="cube__face cube__face--top"></canvas>
    <canvas class="cube__face cube__face--bottom"></canvas>
  </div>
</div>
<pre id="debug"></pre>

Working example using canvas.getBoundingClientRect and event.clientX and event.clientY

const canvas = document.querySelector('canvas');
const ctx = canvas.getContext('2d');
ctx.canvas.width  = ctx.canvas.clientWidth;
ctx.canvas.height = ctx.canvas.clientHeight;
let count = 0;

function draw(e, radius = 1) {
  const rect = canvas.getBoundingClientRect();
  const pos = {
    x: (e.clientX - rect.left) * canvas.width  / canvas.clientWidth,
    y: (e.clientY - rect.top) * canvas.height / canvas.clientHeight,
  };
  ctx.beginPath();
  ctx.arc(pos.x, pos.y, radius, 0, Math.PI * 2);
  ctx.fillStyle = hsl((count++ % 100) / 100, 1, 0.5);
  ctx.fill();
}

function preventDefault(e) {
  e.preventDefault();
}

if (window.PointerEvent) {
  canvas.addEventListener('pointermove', (e) => {
    draw(e, Math.max(Math.max(e.width, e.height) / 2, 1));
  });
  canvas.addEventListener('touchstart', preventDefault, {passive: false});
  canvas.addEventListener('touchmove', preventDefault, {passive: false});
} else {
  canvas.addEventListener('mousemove', draw);
  canvas.addEventListener('mousedown', preventDefault);
}

function hsl(h, s, l) {
  return `hsl(${h * 360 | 0},${s * 100 | 0}%,${l * 100 | 0}%)`;
}

canvas { background: #FED; }

<canvas width="400" height="100" style="width: 300px; height: 200px"></canvas>
<div>canvas deliberately has differnt CSS size vs drawingbuffer size</div>

I know an answer has already been provided, but dselect didn't work for me. Here is what worked to find the packages to remove:

# search postgr  | grep ^i
i   postgresql                      - object-relational SQL database (supported 
i A postgresql-8.4                  - object-relational SQL database, version 8.
i A postgresql-client-8.4           - front-end programs for PostgreSQL 8.4     
i A postgresql-client-common        - manager for multiple PostgreSQL client ver
i A postgresql-common               - PostgreSQL database-cluster manager       

# aptitude purge postgresql-8.4 postgresql-client-8.4 postgresql-client-common postgresql-common postgresql

rm -r /etc/postgresql/
rm -r /etc/postgresql-common/
rm -r /var/lib/postgresql/

Finally, editing /etc/passwd and /etc/group

All you needed was a plus :)

$("#Restaurant_Name").keyup(function(){
        var Text = $(this).val();
        Text = Text.toLowerCase();
        var regExp = /\s+/g;
        Text = Text.replace(regExp,'-');
        $("#Restaurant_Slug").val(Text);        
});

The equivalent to the accepted answer in jQuery 1.11:

$(window).on("beforeunload", function () {
    return "Please don't leave me!";
});

JSFiddle example

altCognito's answer used the unload event, which happens too late for JavaScript to abort the navigation.

just change the content-type to application/json when you use JSON with POST/PUT, etc...

You can execute your logic sequentially via synchronous executor nsynjs. It will pause on each promise, wait for resolution/rejection, and either assign resolve's result to data property, or throw an exception (for handling that you will need try/catch block). Here is an example:

function synchronousCode() {_x000D_
    function myFetch(url) {_x000D_
        try {_x000D_
            return window.fetch(url).data;_x000D_
        }_x000D_
        catch (e) {_x000D_
            return {status: 'failed:'+e};_x000D_
        };_x000D_
    };_x000D_
    var arr=[_x000D_
        myFetch("https://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"),_x000D_
        myFetch("https://ajax.googleapis.com/ajax/libs/jquery/2.0.0/NONEXISTANT.js"),_x000D_
        myFetch("https://ajax.NONEXISTANT123.com/ajax/libs/jquery/2.0.0/NONEXISTANT.js")_x000D_
    ];_x000D_
    _x000D_
    console.log('array is ready:',arr[0].status,arr[1].status,arr[2].status);_x000D_
};_x000D_
_x000D_
nsynjs.run(synchronousCode,{},function(){_x000D_
    console.log('done');_x000D_
});

<script src="https://rawgit.com/amaksr/nsynjs/master/nsynjs.js"></script>

Here's a pure javascript solution,

<iframe 
width="100%" 
height="443" 
class="yvideo" 
id="p1QgNF6J1h0"
src="http://www.youtube.com/embed/p1QgNF6J1h0?rel=0&controls=0&hd=1&showinfo=0&enablejsapi=1"
frameborder="0" 
allowfullscreen>
</iframe>
<button id="myStopClickButton">Stop</button>


<script>
document.getElementById("myStopClickButton").addEventListener("click",    function(evt){
var video = document.getElementsByClassName("yvideo");
for (var i=0; i<video.length; i++) {
   video.item(i).contentWindow.postMessage('{"event":"command","func":"stopVideo","args":""}', '*');
}

});

I think you want to lowercase the checked value? Try:

var jIsHasKids = $('#chkIsHasKids:checked').val().toLowerCase();

or you want to check it, then get its value as lowercase:

var jIsHasKids = $('#chkIsHasKids').attr("checked", true).val().toLowerCase();

I found this way not sure it works for all the CSS primitives

By setting the header property "Content-Type" to "text/html"

mimeMessage.setHeader("Content-Type", "text/html");

now I can do stuff like

mimeMessage.setHeader("Content-Type", "text/html");

mimeMessage.setText ("`<html><body><h1 style =\"color:blue;\">My first Header<h1></body></html>`")

Regards

Boost Getting Started

If you want to use it from Boost TR1 instead

shared_ptr Example

Here is my solution. It works with positive and negative numbers. Hope this helps

function findDigitAmount(num) {

   var positiveNumber = Math.sign(num) * num;
   var lengthNumber = positiveNumber.toString();

 return lengthNumber.length;
}


(findDigitAmount(-96456431);    // 8
(findDigitAmount(1524):         // 4

var http = require('http');

  var options = {     
      host: 'localhost',
      port: 80,
      path: '/broadcast'
    };

  var requestLoop = setInterval(function(){

      http.get (options, function (resp) {
        resp.on('data', function (d) {
          console.log ('data!', d.toString());
        });
        resp.on('end', function (d) {
           console.log ('Finished !');
        });
      }).on('error', function (e) {
          console.log ('error:', e);
      });
  }, 10000);

var dns = require('dns'), cache = {};
dns._lookup = dns.lookup;
dns.lookup = function(domain, family, done) {
    if (!done) {
        done = family;
        family = null;
    }

    var key = domain+family;
    if (key in cache) {
        var ip = cache[key],
            ipv = ip.indexOf('.') !== -1 ? 4 : 6;

        return process.nextTick(function() {
            done(null, ip, ipv);
        });
    }

    dns._lookup(domain, family, function(err, ip, ipv) {
        if (err) return done(err);
        cache[key] = ip;
        done(null, ip, ipv);
    });
};

// Works fine (100%)

There are some tools and API's available for it. However, I do not think you'll find one for free ;)

There is for instance the OLicense suite: http://www.olicense.de/index.php?lang=en

You can try xml2js. It's a simple XML to JavaScript object converter. It gets your XML converted to a JS object so that you can access its content with ease.

Here are some other options:

1. libxmljs
2. xml-stream
3. xmldoc
4. cheerio – implements a subset of core jQuery for XML (and HTML)

I have used xml2js and it has worked fine for me. The rest you might have to try out for yourself.

Linux Mint 20 Ulyana users need to change "ulyana" to "bionic" in

/etc/apt/sources.list.d/additional-repositories.list

like so:

deb [arch=amd64] https://download.docker.com/linux/ubuntu    bionic    stable

You could learn about Python loops here: http://en.wikibooks.org/wiki/Python_Programming/Loops

You have to know that Python doesn't have { and } for start and end of loop, instead it depends on tab chars you enter in first of line, I mean line indents.

So you can do loop inside loop with double tab (indent)

An example of double loop is like this:

onetoten = range(1,11)
tentotwenty = range(10,21)
for count in onetoten:
    for count2 in tentotwenty
        print(count2)

No, you would have to use a for-loop for that.

for (int i = 0; i < lst1.Count; i++)
{
    //lst1[i]...
    //lst2[i]...
}

You can't do something like

foreach (var objCurrent1 int lst1, var objCurrent2 in lst2)
{
    //...
}

500 internal server error can arise due to several reasons. First reason might be that web.config file is not properly created, means you have missed some tag in the web.config file. Secondly this error can be due to some code problem. To check which component of the web application is causing this error you can check Application setting in web.config file. The detail of solving and tracing 500 internal server error with diagram is given here:

I think you may be able to do this with the metaclass. Since the metaclass can be like a class for the class (if that makes sense). I know you can assign a __call__() method to the metaclass to override calling the class, MyClass(). I wonder if using the property decorator on the metaclass operates similarly. (I haven't tried this before, but now I'm curious...)

[update:]

Wow, it does work:

class MetaClass(type):    
    def getfoo(self):
        return self._foo
    foo = property(getfoo)

    @property
    def bar(self):
        return self._bar

class MyClass(object):
    __metaclass__ = MetaClass
    _foo = 'abc'
    _bar = 'def'

print MyClass.foo
print MyClass.bar

Note: This is in Python 2.7. Python 3+ uses a different technique to declare a metaclass. Use: class MyClass(metaclass=MetaClass):, remove __metaclass__, and the rest is the same.

JavaScript isset() on PHP JS

function isset () {
    // discuss at: http://phpjs.org/functions/isset
    // +   original by: Kevin van     Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: FremyCompany
    // +   improved by: Onno Marsman
    // +   improved by: Rafal Kukawski
    // *     example 1: isset( undefined, true);
    // *     returns 1: false
    // *     example 2: isset( 'Kevin van Zonneveld' );
    // *     returns 2: true
    var a = arguments,
        l = a.length,
        i = 0,
        undef;

    if (l === 0) {
        throw new Error('Empty isset');
    }

    while (i !== l) {
        if (a[i] === undef || a[i] === null) {
            return false;
        }
        i++;
    }
    return true;
}

List<"classname"> getreport = cs.getcompletionreport(); 

var getreported = getreport.Select(c => new { demographic = c.rName);   

where cs.getcompletionreport() reference class file is Business Layer for App
I hope this helps.

Per my other answer below, I think you should be doing:

+ (id)sharedFoo
{
    static dispatch_once_t once;
    static MyFoo *sharedFoo;
    dispatch_once(&once, ^ { sharedFoo = [[self alloc] init]; });
    return sharedFoo;
}

The answer from Alex Martelli helped me. However, here is a modified version that I thought was more useful (at least to me).

Updated: works in both Python 2 and Python 3

try:
    # For Python 3
    import queue
    from urllib.request import urlopen
except:
    # For Python 2 
    import Queue as queue
    from urllib2 import urlopen

import threading

worker_data = ['http://google.com', 'http://yahoo.com', 'http://bing.com']

# Load up a queue with your data. This will handle locking
q = queue.Queue()
for url in worker_data:
    q.put(url)

# Define a worker function
def worker(url_queue):
    queue_full = True
    while queue_full:
        try:
            # Get your data off the queue, and do some work
            url = url_queue.get(False)
            data = urlopen(url).read()
            print(len(data))

        except queue.Empty:
            queue_full = False

# Create as many threads as you want
thread_count = 5
for i in range(thread_count):
    t = threading.Thread(target=worker, args = (q,))
    t.start()

Here's a quick-and-dirty technique I have used:

SELECT * FROM Tags
WHERE '|ruby|rails|scruffy|rubyonrails|'
LIKE '%|' + Name + '|%'

So here's the C# code:

string[] tags = new string[] { "ruby", "rails", "scruffy", "rubyonrails" };
const string cmdText = "select * from tags where '|' + @tags + '|' like '%|' + Name + '|%'";

using (SqlCommand cmd = new SqlCommand(cmdText)) {
   cmd.Parameters.AddWithValue("@tags", string.Join("|", tags);
}

Two caveats:

• The performance is terrible. LIKE "%...%" queries are not indexed.
• Make sure you don't have any |, blank, or null tags or this won't work

There are other ways to accomplish this that some people may consider cleaner, so please keep reading.

There isn't any need to write this much. Just put your desired field separator with the -F option in the AWK command and the column number you want to print segregated as per your mentioned field separator.

echo "1: " | awk -F: '{print $1}'
1

echo "1#2" | awk -F# '{print $1}'
1

use auto and min or max width like this:

td {
max-width:50px;
width:auto;
min-width:10px;
}

Working on MongoDB 3.4 [Windows]

• Create dir C:/mongodb/data

• Create a file in C:/mongodb/mongodb.config using this configuration:

  storage:
      engine: wiredTiger
      dbPath: "C:/mongodb/data"
      directoryPerDB: true
      journal:
          enabled: true
  systemLog:
      destination: file
      path: "C:/mongodb/data/mongod.log"
      logAppend: true
      timeStampFormat: iso8601-utc
  net:
      bindIp: 127.0.0.1
      port: 27017
      wireObjectCheck : false
  

• To install MongoDb as a service, run this command in powershell with admin power

  mongod --config="C:\mongodb\mongodb.config" --install --service

• Open Services.msc and look for MongoDb, then start it

Based from this thread, you need to bookmark chrome://settings/languages and then Drag and Drop the language to make it default. You have to click on the Display Google Chrome in this Language button and completely restart Chrome.

You can use some code like this, you can adjust a height and width as per your need

    protected void button_Click(object sender, EventArgs e)
    {
        // open a pop up window at the center of the page.
        ScriptManager.RegisterStartupScript(this, typeof(string), "OPEN_WINDOW", "var Mleft = (screen.width/2)-(760/2);var Mtop = (screen.height/2)-(700/2);window.open( 'your_page.aspx', null, 'height=700,width=760,status=yes,toolbar=no,scrollbars=yes,menubar=no,location=no,top=\'+Mtop+\', left=\'+Mleft+\'' );", true);
    }

Cohesion refers to what the class (or module) can do. Low cohesion would mean that the class does a great variety of actions - it is broad, unfocused on what it should do. High cohesion means that the class is focused on what it should be doing, i.e. only methods relating to the intention of the class.

Example of Low Cohesion:

-------------------
| Staff           |
-------------------
| checkEmail()    |
| sendEmail()     |
| emailValidate() |
| PrintLetter()   |
-------------------

Example of High Cohesion:

----------------------------
| Staff                   |
----------------------------
| -salary                 |
| -emailAddr              |
----------------------------
| setSalary(newSalary)    |
| getSalary()             |
| setEmailAddr(newEmail)  |
| getEmailAddr()          |
----------------------------

As for coupling, it refers to how related or dependent two classes/modules are toward each other. For low coupled classes, changing something major in one class should not affect the other. High coupling would make it difficult to change and maintain your code; since classes are closely knit together, making a change could require an entire system revamp.

Good software design has high cohesion and low coupling.

I faced this issue, while connecting DB, the variable to connect to db was not defined.

Cause: php tried to connect to the db with undefined variable for db host (localhost/127.0.0.1/... any other ip or domain) but failed to trace the domain.

Solution: Make sure the db host is properly defined.

Before you start, close VirtualBox! After those manipulations start VB as Administrator!

1. Run CMD as Administrator
2. Use lines below one by one:

• cd "C:\Program Files\Oracle\Virtualbox"
• VBoxManage setextradata “macOS_Catalina” VBoxInternal2/EfiGraphicsResolution 1920x1080

Screen Resolutions: 1280x720, 1920x1080, 2048x1080, 2560x1440, 3840x2160, 1280x800, 1280x1024, 1440x900, 1600x900

Description:

• macOS_Catalina - insert your VB machine name.

• 1920x1080 - put here your Screen Resolution.

Cheers!

You can try this

<a [attr.disabled]="someCondition ? true: null"></a>

Tensorflow 2.0 Compatible Answer: The explanations of dga and stackoverflowuser2010 are very detailed about Logits and the related Functions.

All those functions, when used in Tensorflow 1.x will work fine, but if you migrate your code from 1.x (1.14, 1.15, etc) to 2.x (2.0, 2.1, etc..), using those functions result in error.

Hence, specifying the 2.0 Compatible Calls for all the functions, we discussed above, if we migrate from 1.x to 2.x, for the benefit of the community.

Functions in 1.x:

1. tf.nn.softmax
2. tf.nn.softmax_cross_entropy_with_logits
3. tf.nn.sparse_softmax_cross_entropy_with_logits

Respective Functions when Migrated from 1.x to 2.x:

1. tf.compat.v2.nn.softmax
2. tf.compat.v2.nn.softmax_cross_entropy_with_logits
3. tf.compat.v2.nn.sparse_softmax_cross_entropy_with_logits

For more information about migration from 1.x to 2.x, please refer this Migration Guide.

Display errors could be turned off in the php.ini or your Apache configuration file.

You can turn it on in the script:

error_reporting(E_ALL);
ini_set('display_errors', '1');

You should see the same messages in the PHP error log.

sh files are unix (linux) shell executables files, they are the equivalent (but much more powerful) of bat files on windows.

So you need to run it from a linux console, just typing its name the same you do with bat files on windows.

If you're using TypeScript, make sure that your tsconfig.json has "jsx": "react" within "compilerOptions".

Sorry EMS, but I actually just got another response from the matplotlib mailling list (Thanks goes out to Benjamin Root).

The code I am looking for is adjusting the savefig call to:

fig.savefig('samplefigure', bbox_extra_artists=(lgd,), bbox_inches='tight')
#Note that the bbox_extra_artists must be an iterable

This is apparently similar to calling tight_layout, but instead you allow savefig to consider extra artists in the calculation. This did in fact resize the figure box as desired.

import matplotlib.pyplot as plt
import numpy as np

plt.gcf().clear()
x = np.arange(-2*np.pi, 2*np.pi, 0.1)
fig = plt.figure(1)
ax = fig.add_subplot(111)
ax.plot(x, np.sin(x), label='Sine')
ax.plot(x, np.cos(x), label='Cosine')
ax.plot(x, np.arctan(x), label='Inverse tan')
handles, labels = ax.get_legend_handles_labels()
lgd = ax.legend(handles, labels, loc='upper center', bbox_to_anchor=(0.5,-0.1))
text = ax.text(-0.2,1.05, "Aribitrary text", transform=ax.transAxes)
ax.set_title("Trigonometry")
ax.grid('on')
fig.savefig('samplefigure', bbox_extra_artists=(lgd,text), bbox_inches='tight')

This produces:

[edit] The intent of this question was to completely avoid the use of arbitrary coordinate placements of arbitrary text as was the traditional solution to these problems. Despite this, numerous edits recently have insisted on putting these in, often in ways that led to the code raising an error. I have now fixed the issues and tidied the arbitrary text to show how these are also considered within the bbox_extra_artists algorithm.

Cells(1,1).Select

It will take you to cell A1, thereby canceling your existing selection.

I am using dateformat at Nodejs and angularjs, so good

install

$ npm install dateformat
$ dateformat --help

demo

var dateFormat = require('dateformat');
var now = new Date();

// Basic usage
dateFormat(now, "dddd, mmmm dS, yyyy, h:MM:ss TT");
// Saturday, June 9th, 2007, 5:46:21 PM

// You can use one of several named masks
dateFormat(now, "isoDateTime");
// 2007-06-09T17:46:21

// ...Or add your own
dateFormat.masks.hammerTime = 'HH:MM! "Can\'t touch this!"';
dateFormat(now, "hammerTime");
// 17:46! Can't touch this!

// You can also provide the date as a string
dateFormat("Jun 9 2007", "fullDate");
// Saturday, June 9, 2007
...

C99 is available online. Quoted from www.open-std.org:

The lastest publically available version of the standard is the combined C99 + TC1 + TC2 + TC3, WG14 N1256, dated 2007-09-07. This is a WG14 working paper, but it reflects the consolidated standard at the time of issue.

div.test td, div.test caption, div.test th 

works for me.

The child selector > does not work in IE6.

I've used this successfully inside R script:

library("reshape2",lib.loc="/path/to/R-packages/")

useful if for whatever reason libraries are in more than one place.

You can try to apply new architecture approach anounced at Google I/O 2017.

It also includes new ORM library called Room

It contains three main components: @Entity, @Dao and @Database

User.java

@Entity
public class User {
  @PrimaryKey
  private int uid;

  @ColumnInfo(name = "first_name")
  private String firstName;

  @ColumnInfo(name = "last_name")
  private String lastName;

  // Getters and setters are ignored for brevity,
  // but they're required for Room to work.
}

UserDao.java

@Dao
public interface UserDao {
  @Query("SELECT * FROM user")
  List<User> getAll();

  @Query("SELECT * FROM user WHERE uid IN (:userIds)")
  List<User> loadAllByIds(int[] userIds);

  @Query("SELECT * FROM user WHERE first_name LIKE :first AND "
       + "last_name LIKE :last LIMIT 1")
  User findByName(String first, String last);

  @Insert
  void insertAll(User... users);

  @Delete
  void delete(User user);
}

AppDatabase.java

@Database(entities = {User.class}, version = 1)
public abstract class AppDatabase extends RoomDatabase {
  public abstract UserDao userDao();
}

git config core.autocrlf false

element = findElement(By.xpath("//*[@test-id='test-username']");
element = findElement(By.xpath("//input[@test-id='test-username']");

(*) - any tagname

You need to create an object since printInformation() is non-static. Try:

int main() {

MyClass o;
o.printInformation();

fgetc( stdin );
return(0);

}

But now it is not working and I contacted our hosting team then they told me to use smtp

Newsflash - it was using SMTP before. They've not provided you with the information you need to solve the problem - or you've not relayed it accurately here.

Its possible that they've disabled the local MTA on the webserver, in which case you'll need to connect the SMTP port on a remote machine. There are lots of toolkits which will do the heavy lifting for you. Personally I like phpmailer because it adds other functionality.

Certainly if they've taken away a facility which was there before and your paying for a service then your provider should be giving you better support than that (there are also lots of programs to drop in in place of a full MTA which would do the job).

C.

I tried experimenting with the answers given. My personal finding came out to be:

git rm -r --cached .

And then

git add .

This seemed to make my working directory nice and clean. You can put your fileName in place of the dot.

To demonstrate, consider the following set, which holds different Person objects:

Set<Person> people = new HashSet<Person>();
people.add(new Person("Tharindu", 10));
people.add(new Person("Martin", 20));
people.add(new Person("Fowler", 30));

Person Model Class

public class Person {
    private String name;
    private int age;

    public Person(String name, int age) {
        this.name = name;
        this.age = age;
    }

    //TODO - getters,setters ,overridden toString & compareTo methods

}

1. The for statement has a form designed for iteration through Collections and arrays .This form is sometimes referred to as the enhanced for statement, and can be used to make your loops more compact and easy to read.

for(Person p:people){
  System.out.println(p.getName());
}

2. Java 8 - java.lang.Iterable.forEach(Consumer)

people.forEach(p -> System.out.println(p.getName()));

default void forEach(Consumer<? super T> action)

Performs the given action for each element of the Iterable until all elements have been processed or the action throws an exception. Unless otherwise specified by the implementing class, actions are performed in the order of iteration (if an iteration order is specified). Exceptions thrown by the action are relayed to the caller. Implementation Requirements:

The default implementation behaves as if: 

for (T t : this)
     action.accept(t);

Parameters: action - The action to be performed for each element

Throws: NullPointerException - if the specified action is null

Since: 1.8

Goto to Project=>Build Automatically . Make sure it is ticked

pip install pyyaml

If you don't have pip, run easy_install pip to install pip, which is the go-to package installer - Why use pip over easy_install?. If you prefer to stick with easy_install, then easy_install pyyaml

You can check version of ElasticSearch by the following command. It returns some other information also:

curl -XGET 'localhost:9200'

{
  "name" : "Forgotten One",
  "cluster_name" : "elasticsearch",
  "version" : {
    "number" : "2.3.4",
    "build_hash" : "e455fd0c13dceca8dbbdbb1665d068ae55dabe3f",
    "build_timestamp" : "2016-06-30T11:24:31Z",
    "build_snapshot" : false,
    "lucene_version" : "5.5.0"
  },
  "tagline" : "You Know, for Search"
}

Here you can see the version number: 2.3.4

Typically Kibana is installed in /opt/logstash/bin/kibana . So you can get the kibana version as follows

/opt/kibana/bin/kibana --version

You have a line break <br> in-between the second and third images in your markup. Get rid of that, and it'll show inline.

Most voted solution didn't work on my machine (linux mint 18.04). After a careful look, i found that g++ was missing. Solved with

sudo apt-get install g++

If you are using AWS (Amazon Web Services) Micro version, then it is a memory issue. When I ran

mysql

from the terminal it would say

ERROR 2002 (HY000): Can't connect to local MySQL server through socket /var/run/mysqld/mysqld.sock' (111)

So I tried the following and it would just fail.

service mysqld restart

After much searching, I found out that you have to create a swap file for MySQL to have enough memory. Instructions are listed: http://www.prowebdev.us/2012/05/amazon-ec2-linux-micro-swap-space.html.

Then, I was able to restart mysqld.

You can directly change text or string to proper using this simple method, after checking for null or empty string values in order to eliminate errors:

public string textToProper(string text)
{
    string ProperText = string.Empty;
    if (!string.IsNullOrEmpty(text))
    {
        ProperText = CultureInfo.CurrentCulture.TextInfo.ToTitleCase(text);
    }
    else
    {
        ProperText = string.Empty;
    }
    return ProperText;
}

autoscroll will be defined and modified in the controller:

<span ng-class= "autoscroll?'class_if_true':'class_if_false'"></span>

Add multiple classes based on condition by:

<span ng-class= "autoscroll?'first second third':'classes_if_false'"></span>

I read comments on answer set as Okay. Most of the user are asking that the button and some links click should be allowed. Here one more line is added to the existing code that will work.

<script type="text/javascript">
  var hook = true;
  window.onbeforeunload = function() {
    if (hook) {

      return "Did you save your stuff?"
    }
  }
  function unhook() {
    hook=false;
  }

Call unhook() onClick for button and links which you want to allow. E.g.

<a href="#" onClick="unhook()">This link will allow navigation</a>

In addition to your CORS issue, the server you are trying to access has HTTP basic authentication enabled. You can include credentials in your cross-domain request by specifying the credentials in the URL you pass to the XHR:

url = 'http://username:[email protected]/testpage'

simpler answer:

ax = plt.axes()
ax.set_facecolor('silver')

TLDR: ??F on MacOS will open "Find in path" dialog.

First of all, this IDEA has a nice "Find Usages" command. It can be found in the context menu, when the cursor is on some field, method, etc.

It's context-aware, and as far as I know, is the best way to find class, method or field usage.

Alternatively, you can use the

Edit > Find > Find in path…

dialog, which allows you to search the whole workspace.

Also in IDEA 13 there is an awesome "Search Everywhere" option, by default called by double Shift. It allows you to search in project, files, classes, settings, and so on.

Also you can search from Project Structure dialog with "Find in Path…". Just call it by right mouse button on concrete directory and the search will be scoped, only inside that directory and it's sub-directory.

Enjoy!

I have followed the following approach

First, add sibling div

$('<div class="loading"></div>').insertBefore("#Iframe");

and then when the iframe completed loading

$("#Iframe").load(function(){
   $(this).siblings(".loading-fetching-content").remove(); 
  });

The request type is multipart/form-data and what you are sending is essentially form fields that go out as bytes with content boundaries separating different form fields.To send an object representation as form field (string), you can send a serialized form from the client that you can then deserialize on the server.

After all no programming environment object is actually ever traveling on the wire. The programming environment on both side are just doing automatic serialization and deserialization that you can also do. That is the cleanest and programming environment quirks free way to do it.

As an example, here is a javascript client posting to a Jersey example service,

submitFile(){

    let data = new FormData();
    let account = {
        "name": "test account",
        "location": "Bangalore"
    }

    data.append('file', this.file);
    data.append("accountKey", "44c85e59-afed-4fb2-884d-b3d85b051c44");
    data.append("device", "test001");
    data.append("account", JSON.stringify(account));
    
    let url = "http://localhost:9090/sensordb/test/file/multipart/upload";

    let config = {
        headers: {
            'Content-Type': 'multipart/form-data'
        }
    }

    axios.post(url, data, config).then(function(data){
        console.log('SUCCESS!!');
        console.log(data.data);
    }).catch(function(){
        console.log('FAILURE!!');
    });
},

Here the client is sending a file, 2 form fields (strings) and an account object that has been stringified for transport. here is how the form fields look on the wire,

On the server, you can just deserialize the form fields the way you see fit. To finish this trivial example,

    @POST
@Path("/file/multipart/upload")
@Consumes({MediaType.MULTIPART_FORM_DATA})
public Response uploadMultiPart(@Context ContainerRequestContext requestContext,
        @FormDataParam("file") InputStream fileInputStream,
        @FormDataParam("file") FormDataContentDisposition cdh,
        @FormDataParam("accountKey") String accountKey,
        @FormDataParam("account") String json)  {
    

    
    System.out.println(cdh.getFileName());
    System.out.println(cdh.getName());
    System.out.println(accountKey);
    
    try {
        Account account = Account.deserialize(json);
        System.out.println(account.getLocation());
        System.out.println(account.getName());
        
    } catch (Exception e) {
        e.printStackTrace();
    }
    
    return Response.ok().build();
    
}

Found this while Googling. The second post makes a point about the different phases of JSF, which might be causing your error message to become lost. Also, try null in place of "newPassword" because you do not have any object with the id newPassword.

If the user successful login into your Node app, I'm thinking that you are using Express, isn't ? Well you can redirect easy by using res.redirect. Like:

app.post('/auth', function(req, res) {
  // Your logic and then redirect
  res.redirect('/user_profile');
});

LPCWSTR is equivalent to wchar_t const *. It's a pointer to a wide character string that won't be modified by the function call.

You can assign to LPCWSTRs by prepending a L to a string literal: LPCWSTR *myStr = L"Hello World";

LPCTSTR and any other T types, take a string type depending on the Unicode settings for your project. If _UNICODE is defined for your project, the use of T types is the same as the wide character forms, otherwise the Ansi forms. The appropriate function will also be called this way: FindWindowEx is defined as FindWindowExA or FindWindowExW depending on this definition.

I resolved this by switching my project properties from Web>>Specific port>>55555 to Auto-assign port

You should try this one:

Console.WriteLine("{0}.{1}.{2}", mon, da, yet);

See http://www.dotnetperls.com/console-writeline for more details.

Why not set ON CASCADE DELETE on Foreign Key patron_info.pid?

In case someone is using swagger:

Change the Scheme to HTTP or HTTPS, depend on needs, prior to hit the execute.

Postman:

Change the URL Path to http:// or https:// in the url address

$string="1,2,3,4,5";
$array=array_map('intval', explode(',', $string));
$array = implode("','",$array);
$query=mysqli_query($conn, "SELECT name FROM users WHERE id IN ('".$array."')");

NB: the syntax is:

SELECT * FROM table WHERE column IN('value1','value2','value3')

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

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

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

%appdata%\Subversion

How about JsonConvert.DeserializeObject(object.ToString());

you can cancel the rebase with

git rebase --abort

and when you run the interactive rebase command again the 'squash; commit must be below the pick commit in the list

Wrap your column in this code.

 ISNULL(Yourcolumn, 0)

Maybe check why you are getting nulls

You should look at Computed Properties

In your code sample, perimeter is a property not backed up by a class variable, instead its value is computed using the get method and stored via the set method - usually referred to as getter and setter.

When you use that property like this:

var cp = myClass.perimeter

you are invoking the code contained in the get code block, and when you use it like this:

myClass.perimeter = 5.0

you are invoking the code contained in the set code block, where newValue is automatically filled with the value provided at the right of the assignment operator.

Computed properties can be readwrite if both a getter and a setter are specified, or readonly if the getter only is specified.

You can support both query parameters and path parameters, e.g., in the case of aggregation of resources -- when the collection of sub-resources makes sense on its own.

/departments/{id}/employees
/employees?dept=id

Query parameters can support hierarchical and non-hierarchical subsetting; path parameters are hierarchical only.

Resources can exhibit multiple hierarchies. Support short paths if you will be querying broad sub-collections that cross hierarchical boundaries.

/inventory?make=toyota&model=corolla
/inventory?year=2014

Use query parameters to combine orthogonal hierarchies.

/inventory/makes/toyota/models/corolla?year=2014
/inventory/years/2014?make=toyota&model=corolla
/inventory?make=toyota&model=corolla&year=2014

Use only path parameters in the case of composition -- when a resource doesn't make sense divorced from its parent, and the global collection of all children is not a useful resource in itself.

/words/{id}/definitions
/definitions?word=id   // not useful

Based on twitter scroll trouble (http://ejohn.org/blog/learning-from-twitter/).

Here is my solution, throttling the js scroll event (usefull for mobile devices)

JS:

$(function() {
    var $document, didScroll, offset;
    offset = $('.menu').position().top;
    $document = $(document);
    didScroll = false;
    $(window).on('scroll touchmove', function() {
      return didScroll = true;
    });
    return setInterval(function() {
      if (didScroll) {
        $('.menu').toggleClass('fixed', $document.scrollTop() > offset);
        return didScroll = false;
      }
    }, 250);
  });

CSS:

.menu {
  background: pink;
  top: 5px;
}

.fixed {
  width: 100%;
  position: fixed;
  top: 0;
}

HTML:

<div class="menu">MENU FIXED ON TOP</div>

http://codepen.io/anon/pen/BgqHw

git log -1 --abbrev-commit

will also do it.

git log --abbrev-commit

will list the log entries with abbreviated SHA-1 checksum.

If anyone is using a Navigation Controller and wants all of their navigation controllers to have the black style, you can write an extension to UINavigationController like this in Swift 3 and it will apply to all navigation controllers (instead of assigning it to one controller at a time).

extension UINavigationController {

    override open func viewDidLoad() {
        super.viewDidLoad()

        self.navigationBar.barStyle = UIBarStyle.black
    }

}

For simplicity and brevity:

$ cat Makefile
check-%:
        @: $(if $(value $*),,$(error $* is undefined))

bar:| check-foo
        echo "foo is $$foo"

With outputs:

$ make bar
Makefile:2: *** foo is undefined. Stop.
$ make bar foo="something"
echo "foo is $$foo"
foo is something

I recommend to use both, prop and attr because I had problems with Chrome and I solved it using both functions.

if ($(':checkbox').is(':checked')){
    $(':checkbox').prop('checked', true).attr('checked', 'checked');
}
else {
    $(':checkbox').prop('checked', false).removeAttr('checked');
}

There are two ways to achieve that:

• Use -rpath linker option:

gcc XXX.c -o xxx.out -L$HOME/.usr/lib -lXX -Wl,-rpath=/home/user/.usr/lib

• Use LD_LIBRARY_PATH environment variable - put this line in your ~/.bashrc file:

  export LD_LIBRARY_PATH=/home/user/.usr/lib

This will work even for a pre-generated binaries, so you can for example download some packages from the debian.org, unpack the binaries and shared libraries into your home directory, and launch them without recompiling.

For a quick test, you can also do (in bash at least):

LD_LIBRARY_PATH=/home/user/.usr/lib ./xxx.out

which has the advantage of not changing your library path for everything else.

if you state a.redLink{color:red;} then to keep this on hover and such add a.redLink:hover{color:red;} This will make sure no other hover states will change the color of your links

You can enable log4j internal logging by defining the 'log4j.debug' variable.

We can create a for loop and pass all the numeric columns into it. The loop will plot the graphs one by one in separate pane as we are including plt.figure() into it.

import pandas as pd
import seaborn as sns
import numpy as np

numeric_features=[x for x in data.columns if data[x].dtype!="object"]
#taking only the numeric columns from the dataframe.

for i in data[numeric_features].columns:
    plt.figure(figsize=(12,5))
    plt.title(i)
    sns.boxplot(data=data[i])

It depends on what you mean with "empty".

When you attempt to get the value of a property on an object which has no property with that name, you will get the value undefined.

That's what happens with sparse arrays: not all indices between 0 and array.length-1 exist.

So you could check if array[index] === undefined.

However, the property index could exist with an undefined value. If you want to filter out this case, you can use the in operator or hasOwnProperty, as described in How do I check if an object has a property in JavaScript?

index in array;
array.hasOwnProperty(index);

If you want consider an existing property with an undefined or null value to not exist, you can use the loose comparison array[index] == undefined or array[index] == null.

If you know the array is not sparse, you could compare index with array.length. But to be safe, you may want to ensure that index really is an array index, see Check if property name is array index

This is similar to some of the other answers, but is compact and avoids the conversion to dictionary if you already have a list.

Given a ComboBox "combobox" on a windows form and a class SomeClass with the string type property Name,

List<SomeClass> list = new List<SomeClass>();

combobox.DisplayMember = "Name";
combobox.DataSource = list;

Which means that combobox.SelectedItem is a SomeClass object from list, and each item in combobox will be displayed using its property Name.

You can read the selected item using

SomeClass someClass = (SomeClass)combobox.SelectedItem;

See this article. The feature you are looking for is the onbeforeunload

sample code:

  <script language="JavaScript">
  window.onbeforeunload = confirmExit;
  function confirmExit()
  {
    return "You have attempted to leave this page.  If you have made any changes to the fields without clicking the Save button, your changes will be lost.  Are you sure you want to exit this page?";
  }
</script>

You can do:

<hr style="border: 1px dashed black;" />

Demo: http://jsfiddle.net/JMfC9/

Collections.sort(teamsName.subList(1, teamsName.size()));

The code above will reflect the actual sublist of your original list sorted.

Simply use :

mapA.equals(mapB);

Compares the specified object with this map for equality. Returns true if the given object is also a map and the two maps represent the same mappings

If you know the list of ids try this query:

SELECT * FROM `Buses` WHERE BusId IN (`list of busIds`)

or if you pull them from another table list of busIds could be another subquery:

SELECT * FROM `Buses` WHERE BusId IN (SELECT SomeId from OtherTable WHERE something = somethingElse)

If you need to compare to another table you need a join:

SELECT * FROM `Buses` JOIN OtheTable on Buses.BusesId = OtehrTable.BusesId